diff --git a/.vscode/settings.json b/.vscode/settings.json
index 8ef924f..0eee02d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
   "css.customData": [],
-  "css.lint.unknownAtRules": "ignore"
+  "css.lint.unknownAtRules": "ignore",
+  "typescript.tsdk": "node_modules/typescript/lib"
 }
diff --git a/README.md b/README.md
index 678e5b3..080812e 100644
--- a/README.md
+++ b/README.md
@@ -1,71 +1,114 @@
 # KeepCheck
 
-An offline-first PWA for logging and rating food and drink spots. Built with Next.js, Dexie.js, and Tailwind CSS. Your data stays on your device—no cloud, no accounts, fully private.
+A Progressive Web App for logging and rating food and drink spots. Built offline-first with local IndexedDB storage and optional real-time cloud sync via Firebase. Works on desktop and mobile, with or without an internet connection.
 
+## Features
 
-## Project Structure
-
-    keepcheck/
-        app/            - Main UI, search/sort logic, components
-        public/         - Static assets (logo, icons)
-        manifest.ts     - PWA configuration
-        sw.js           - Service worker for offline mode
-        package.json    - Dependencies and scripts
-
-
-## Requirements
-
-- Node.js (v18 or later recommended)
-- A modern web browser (Chrome, Edge, Safari, etc.)
-- npm, yarn, pnpm, or bun
-
-
-## Setup Guide for New Cloners
-
-### Step 1 - Clone or Download
-
-    git clone https://github.com/yourusername/keepcheck.git
-    cd keepcheck
-
-
-### Step 2 - Install Dependencies
-
-Run this in your terminal:
-
-    npm install
-
-
-### Step 3 - Start Development
-
-    npm run dev
-
-Open http://localhost:3000 in your browser.
+- **Offline-First Storage** — All data is written instantly to IndexedDB (via Dexie.js) so the app works without a network. A service worker caches the app shell for full offline reliability.
+- **Cloud Sync** — Sign in with Google to sync spots and images across devices in real-time through Firestore. Offline edits queue automatically and sync when connectivity returns.
+- **Interactive Maps** — View logged spots on a Leaflet/OpenStreetMap view. Pick a location by tapping the map or use device GPS to auto-detect coordinates.
+- **Image Support** — Attach photos to spots. Images are compressed locally for thumbnails and cached in IndexedDB at full resolution.
+- **Search, Filter, and Sort** — Text search with debounce, category filters (Cafe, Restaurant), sort by date or rating, and toggle between list and grid views.
+- **Toast Notifications** — All user actions (logging, deleting, signing in/out, syncing, errors) surface as brief toast notifications instead of alerts or silent failures.
+- **PWA Installable** — Can be installed to the home screen on mobile or as a desktop app through the browser.
 
+## Tech Stack
 
-## Running KeepCheck
+| Technology | Role |
+| --- | --- |
+| Next.js 16 (App Router) | Framework and routing |
+| Dexie.js | IndexedDB wrapper for local storage |
+| Firebase Auth + Firestore | Authentication and cloud database |
+| NextAuth.js v5 | OAuth session management |
+| Tailwind CSS v4 | Styling and theming |
+| GSAP | Animations |
+| Leaflet.js | Map rendering |
+| Serwist | Service worker and PWA support |
 
-Just open the app in your browser. Since it is a PWA, you can "Install" it via your browser menu to use it as a standalone app on your desktop or phone home screen.
+## Project Structure
 
+```
+app/
+  api/              Server routes (auth callback, token exchange)
+  login/            Sign-in page
+  map/              Full-page map view
+  offline/          Offline fallback page
+  db.ts             IndexedDB schema
+  globals.css       Theme tokens and animations
+  layout.tsx        Root layout (providers)
+  page.tsx          Main application page
+
+components/
+  AuthGuard.tsx           Auth-protected wrapper
+  LocationPickerMap.tsx   Map pin selector
+  LocationPickerModal.tsx Modal for picking a location
+  SpotDetailModal.tsx     Full-res photo viewer
+  SpotsMap.tsx            Map with spot markers
+
+lib/
+  auth.tsx          Auth context (NextAuth + Firebase bridge)
+  firebase.ts       Firebase client setup
+  firestore.ts      Firestore read/write helpers
+  offlineSync.ts    Offline queue and reconnection sync
+  toast.tsx         Global toast notification provider
+
+utils/
+  image.ts          Image compression and resizing
+```
+
+## Setup
+
+### Prerequisites
+
+- Node.js 18 or later
+- npm (or yarn / pnpm / bun)
+
+### 1. Clone and install
+
+```bash
+git clone https://github.com/yourusername/keepcheck.git
+cd keepcheck
+npm install
+```
+
+### 2. Configure environment
+
+Create a `.env.local` file in the project root:
+
+```env
+# NextAuth
+AUTH_SECRET=
+AUTH_GOOGLE_ID=
+AUTH_GOOGLE_SECRET=
+
+# Firebase (client)
+NEXT_PUBLIC_FIREBASE_API_KEY=
+NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN=
+NEXT_PUBLIC_FIREBASE_PROJECT_ID=
+NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET=
+NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID=
+NEXT_PUBLIC_FIREBASE_APP_ID=
+
+# Firebase Admin (server-side token exchange)
+FIREBASE_CLIENT_EMAIL=
+FIREBASE_PRIVATE_KEY=
+```
+
+### 3. Run
+
+```bash
+npm run dev
+```
+
+Open [http://localhost:3000](http://localhost:3000).
 
 ## How It Works
 
-    1. Your data is managed by Dexie.js (IndexedDB wrapper) stored locally in your browser.
-    2. Next.js App Router handles the UI state reactively using useLiveQuery.
-    3. Tailwind CSS handles the theme toggling via class-based dark mode.
-    4. Service Worker (sw.js) caches the app shell for offline reliability.
-
-
-## Tech Stack
-
-    Next.js         - React framework for the App Router
-    Dexie.js        - Local IndexedDB storage for offline-first data
-    Tailwind CSS    - Utility-first styling
-    Lucide React    - Clean, consistent iconography
-    Vercel          - Deployment platform
-
+1. When you log a spot, the data is written to IndexedDB immediately. If you are signed in and online, it also writes to Firestore in the background.
+2. If you are offline, spots are flagged as pending. When the app detects connectivity, it runs a sync sweep to push pending records to Firestore.
+3. Firestore snapshot listeners keep your local database in sync with cloud changes from other devices.
+4. Images are stored as blobs in IndexedDB and as compressed base64 strings in Firestore.
 
-## Roadmap & Future Scope
+## License
 
-- Direct JSON restoration (Import functionality)
-- Advanced categorization (Food Truck, Bakery, Bar, etc.)
-- Data visualization (Charts for your ratings over time)
+MIT
diff --git a/app/api/auth/[...nextauth]/route.ts b/app/api/auth/[...nextauth]/route.ts
new file mode 100644
index 0000000..eeb4cb5
--- /dev/null
+++ b/app/api/auth/[...nextauth]/route.ts
@@ -0,0 +1,5 @@
+export const runtime = "nodejs";
+
+import { handlers } from "@/auth";
+
+export const { GET, POST } = handlers;
diff --git a/app/api/firebase-token/route.ts b/app/api/firebase-token/route.ts
new file mode 100644
index 0000000..7e613f0
--- /dev/null
+++ b/app/api/firebase-token/route.ts
@@ -0,0 +1,81 @@
+export const runtime = "nodejs";
+
+import { NextResponse } from "next/server";
+import { auth } from "@/auth";
+import { getAdminAuth } from "@/lib/firebaseAdmin";
+
+/**
+ * POST /api/firebase-token
+ *
+ * UID-Continuity Bridge: Converts a NextAuth session → Firebase custom token.
+ *
+ * Flow:
+ *   1. Verify the caller has a valid NextAuth session.
+ *   2. Extract email from the session.
+ *   3. Look up the EXISTING Firebase user by email (getUserByEmail).
+ *      - If found → use that uid.  This is CRITICAL: existing Firestore data
+ *        (spots, images, etc.) is scoped to the uid that Firebase originally
+ *        generated for this Google account.  If we created a new uid instead,
+ *        all existing data would be orphaned and invisible to the user.
+ *      - If NOT found → this is a genuinely new user who has never signed in.
+ *        Create a new Firebase user (createUser) and use the resulting uid.
+ *   4. Mint a custom token for that uid and return it.
+ *
+ * The client calls signInWithCustomToken(auth, customToken) to establish
+ * the Firebase session, which populates Firestore security-rules' request.auth.
+ */
+export async function POST() {
+  // 1. Verify NextAuth session
+  const session = await auth();
+  if (!session?.user?.email) {
+    return NextResponse.json(
+      { error: "Not authenticated" },
+      { status: 401 }
+    );
+  }
+
+  const { email, name, image } = session.user;
+  const adminAuth = getAdminAuth();
+
+  try {
+    let uid: string;
+
+    // 2. Look up existing Firebase user by email FIRST.
+    //
+    // WHY THIS MATTERS:
+    // Firebase Auth originally assigned a uid when this user first signed in
+    // via signInWithPopup/signInWithRedirect. All their Firestore documents
+    // (users/{uid}/spots/...) and Storage paths are keyed to that uid.
+    // If we skip this lookup and always call createUser(), the new user record
+    // gets a DIFFERENT uid, and every existing spot/image becomes unreachable.
+    try {
+      const existingUser = await adminAuth.getUserByEmail(email);
+      uid = existingUser.uid;
+    } catch (lookupError: unknown) {
+      // auth/user-not-found means this is a genuinely new user.
+      const code = (lookupError as { code?: string })?.code;
+      if (code === "auth/user-not-found") {
+        const newUser = await adminAuth.createUser({
+          email,
+          displayName: name ?? undefined,
+          photoURL: image ?? undefined,
+        });
+        uid = newUser.uid;
+      } else {
+        // Unexpected error — re-throw.
+        throw lookupError;
+      }
+    }
+
+    // 3. Mint custom token
+    const customToken = await adminAuth.createCustomToken(uid);
+
+    return NextResponse.json({ customToken });
+  } catch (error) {
+    console.error("[firebase-token] Error minting custom token:", error);
+    return NextResponse.json(
+      { error: "Failed to create Firebase token" },
+      { status: 500 }
+    );
+  }
+}
diff --git a/app/db.ts b/app/db.ts
index ff8deb6..a402e59 100644
--- a/app/db.ts
+++ b/app/db.ts
@@ -13,6 +13,14 @@ export interface FoodSpotLog {
   createdAt: number; // epoch ms
   /** Base64 JPEG data-URL thumbnail for fast list rendering. */
   thumbnail?: string;
+  /** Firestore document ID (for cloud sync). */
+  firebaseId?: string;
+  /** Firebase Auth UID that owns this entry. */
+  userId?: string;
+  /** True when the entry has been saved locally but not yet synced to Firestore. */
+  pendingSync?: boolean;
+  latitude?: number;
+  longitude?: number;
 }
 
 /** Full-resolution image associated with a spot (one image per spot). */
@@ -23,6 +31,8 @@ export interface SpotImage {
   /** Compressed JPEG binary — stored but NOT indexed. */
   blob: Blob;
   createdAt: number; // epoch ms
+  /** Firestore document ID for the image. */
+  firebaseId?: string;
 }
 
 class KeepCheckDB extends Dexie {
@@ -54,11 +64,6 @@ class KeepCheckDB extends Dexie {
       );
 
     // v3 — adds `images` store + optional `thumbnail` field on spots.
-    // The spots index string is unchanged because `thumbnail` is NOT
-    // indexed (Dexie only requires indexed fields in the schema string).
-    // The images store indexes `spotId` for cascade-delete lookups and
-    // `createdAt` for chronological queries; `blob` is stored but never
-    // indexed to save space.
     this.version(3)
       .stores({
         spots: "++id, name, category, rating, createdAt",
@@ -69,14 +74,73 @@ class KeepCheckDB extends Dexie {
           .table<FoodSpotLog>("spots")
           .toCollection()
           .modify((spot) => {
-            // Backfill — existing rows simply get `undefined` so the
-            // TypeScript `?` optional field is satisfied. This is a
-            // no-op for the data but documents the migration intent.
             if (spot.thumbnail === undefined) {
               spot.thumbnail = undefined;
             }
           })
       );
+
+    // v4 — adds `firebaseId` and `userId` fields for cloud sync.
+    // These are indexed so we can look up spots by their Firestore ID
+    // and filter by user.
+    this.version(4)
+      .stores({
+        spots: "++id, name, category, rating, createdAt, firebaseId, userId",
+        images: "++id, spotId, createdAt, firebaseId",
+      })
+      .upgrade((tx) =>
+        tx
+          .table<FoodSpotLog>("spots")
+          .toCollection()
+          .modify((spot) => {
+            if (spot.firebaseId === undefined) {
+              spot.firebaseId = undefined;
+            }
+            if (spot.userId === undefined) {
+              spot.userId = undefined;
+            }
+          })
+      );
+
+    // v5 — adds `pendingSync` index for offline-first sync tracking.
+    // When a spot is saved locally but hasn't been synced to Firestore
+    // yet, pendingSync = true. The sync manager uses this index to
+    // efficiently sweep all unsynced entries.
+    this.version(5)
+      .stores({
+        spots: "++id, name, category, rating, createdAt, firebaseId, userId, pendingSync",
+        images: "++id, spotId, createdAt, firebaseId",
+      })
+      .upgrade((tx) =>
+        tx
+          .table<FoodSpotLog>("spots")
+          .toCollection()
+          .modify((spot) => {
+            if (spot.pendingSync === undefined) {
+              spot.pendingSync = false;
+            }
+          })
+      );
+
+    // v6 — adds `latitude` and `longitude` fields to spots for the map view.
+    this.version(6)
+      .stores({
+        spots: "++id, name, category, rating, createdAt, firebaseId, userId, pendingSync",
+        images: "++id, spotId, createdAt, firebaseId",
+      })
+      .upgrade((tx) =>
+        tx
+          .table<FoodSpotLog>("spots")
+          .toCollection()
+          .modify((spot) => {
+            if (spot.latitude === undefined) {
+              spot.latitude = undefined;
+            }
+            if (spot.longitude === undefined) {
+              spot.longitude = undefined;
+            }
+          })
+      );
   }
 }
 
diff --git a/app/globals.css b/app/globals.css
index 1bd5261..3335455 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -2,48 +2,348 @@
 
 @custom-variant dark (&:where(.dark, .dark *));
 
+/* ================================================================== */
+/*  NEUMORPHISM DESIGN SYSTEM                                          */
+/* ================================================================== */
+
 :root {
-  --bg: #EFE7D8;
-  --surface: #FBF6EC;
-  --text-primary: #2C2018;
-  --text-secondary: #6B5D4F;
-  --accent: #A6572B;
-  --category-cafe: #8B6F9E;
-  --category-restaurant: #3E6E77;
+  /* Fonts family variables */
+  --font-fraunces: "Fraunces", Georgia, serif;
+  --font-work-sans: "Work Sans", system-ui, -apple-system, sans-serif;
+  --font-space-mono: "Space Mono", Consolas, Monaco, monospace;
+
+  /* Base palette — cream / caramel / sage */
+  --bg: #F8F1E7;
+  --surface: #FCF8F3;
+  --text-primary: #4E342E;
+  --text-secondary: #7D6558;
+  --accent: #D4A373;
+  --accent-glow: #F4C542;
+  --category-cafe: #A3B18A;
+  --category-restaurant: #4E342E;
+  --gold: #F4C542;
+
+  /* Neumorphic shadow pairs (light) */
+  --neu-light: #ffffff;
+  --neu-dark: #e2d6c7;
+  --neu-shadow-raised: 6px 6px 14px var(--neu-dark), -6px -6px 14px var(--neu-light);
+  --neu-shadow-inset: inset 4px 4px 10px var(--neu-dark), inset -4px -4px 10px var(--neu-light);
+  --neu-shadow-button: 4px 4px 10px var(--neu-dark), -4px -4px 10px var(--neu-light);
+  --neu-shadow-button-active: inset 3px 3px 8px var(--neu-dark), inset -3px -3px 8px var(--neu-light);
+  --neu-shadow-subtle: 3px 3px 8px var(--neu-dark), -3px -3px 8px var(--neu-light);
 }
 
 .dark {
-  --bg: #1E1712;
-  --surface: #2A2119;
-  --text-primary: #F0E6D6;
+  --bg: #1C1410;
+  --surface: #261D17;
+  --text-primary: #F8F1E7;
   --text-secondary: #B8A890;
-  --accent: #D68A4C;
-  --category-cafe: #7C5A3E;
-  --category-restaurant: #3E5A5E;
+  --accent: #D4A373;
+  --accent-glow: #F4C542;
+  --category-cafe: #A3B18A;
+  --category-restaurant: #A4897A;
+  --gold: #F4C542;
+
+  /* Neumorphic shadow pairs (dark) */
+  --neu-light: #261e18;
+  --neu-dark: #120e0b;
+  --neu-shadow-raised: 6px 6px 14px var(--neu-dark), -6px -6px 14px var(--neu-light);
+  --neu-shadow-inset: inset 4px 4px 10px var(--neu-dark), inset -4px -4px 10px var(--neu-light);
+  --neu-shadow-button: 4px 4px 10px var(--neu-dark), -4px -4px 10px var(--neu-light);
+  --neu-shadow-button-active: inset 3px 3px 8px var(--neu-dark), inset -3px -3px 8px var(--neu-light);
+  --neu-shadow-subtle: 3px 3px 8px var(--neu-dark), -3px -3px 8px var(--neu-light);
 }
 
+/* Tailwind theme bindings */
 @theme inline {
   --color-background: var(--bg);
   --color-foreground: var(--text-primary);
+  --color-bg: var(--bg);
   --color-surface: var(--surface);
   --color-text-primary: var(--text-primary);
   --color-text-secondary: var(--text-secondary);
   --color-accent: var(--accent);
+  --color-accent-glow: var(--accent-glow);
   --color-category-cafe: var(--category-cafe);
   --color-category-restaurant: var(--category-restaurant);
-  
+  --color-neu-light: var(--neu-light);
+  --color-neu-dark: var(--neu-dark);
+  --color-gold: var(--gold);
+
+  --shadow-neu-raised: var(--neu-shadow-raised);
+  --shadow-neu-inset: var(--neu-shadow-inset);
+  --shadow-neu-button: var(--neu-shadow-button);
+  --shadow-neu-button-active: var(--neu-shadow-button-active);
+  --shadow-neu-subtle: var(--neu-shadow-subtle);
+
   --font-serif: var(--font-fraunces);
   --font-sans: var(--font-work-sans);
   --font-mono: var(--font-space-mono);
 }
 
+/* ================================================================== */
+/*  BASE                                                               */
+/* ================================================================== */
+
 body {
   background: var(--bg);
+  background-image: 
+    radial-gradient(at 0% 0%, rgba(212, 163, 115, 0.12) 0px, transparent 50%),
+    radial-gradient(at 100% 0%, rgba(163, 177, 138, 0.15) 0px, transparent 50%),
+    radial-gradient(at 50% 100%, rgba(244, 197, 66, 0.08) 0px, transparent 50%);
+  background-attachment: fixed;
   color: var(--text-primary);
-  font-family: var(--font-work-sans), sans-serif;
+  font-family: var(--font-work-sans), system-ui, sans-serif;
+}
+
+/* ================================================================== */
+/*  NEUMORPHIC UTILITY CLASSES                                         */
+/* ================================================================== */
+
+.neu-raised {
+  background: var(--surface);
+  box-shadow: var(--neu-shadow-raised);
+  border: 1px solid rgba(125, 101, 88, 0.12);
+  border-radius: 20px;
+}
+
+.neu-inset {
+  background: var(--bg);
+  box-shadow: var(--neu-shadow-inset);
+  border-radius: 16px;
+}
+
+.neu-button {
+  background: var(--surface);
+  box-shadow: var(--neu-shadow-button);
+  border: 1px solid rgba(125, 101, 88, 0.1);
+  border-radius: 14px;
+  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.neu-button:hover {
+  box-shadow: var(--neu-shadow-raised);
+  transform: translateY(-1px);
+}
+
+.neu-button:active,
+.neu-button.active {
+  box-shadow: var(--neu-shadow-button-active);
+  transform: translateY(0);
+}
+
+.neu-input {
+  background: var(--surface);
+  box-shadow: var(--neu-shadow-inset);
+  border: 1px solid rgba(125, 101, 88, 0.15);
+  border-radius: 14px;
+  padding: 14px 16px;
+  color: var(--text-primary);
+  font-size: 0.9rem;
+  outline: none;
+  transition: box-shadow 0.3s ease, transform 0.2s ease, border-color 0.2s ease;
+}
+
+.neu-input:focus {
+  border-color: var(--accent);
+  box-shadow: inset 5px 5px 12px var(--neu-dark), inset -5px -5px 12px var(--neu-light), 0 0 0 2px var(--accent);
+}
+
+.neu-input::placeholder {
+  color: var(--text-secondary);
+  opacity: 0.5;
+}
+
+.neu-card {
+  background: var(--surface);
+  box-shadow: var(--neu-shadow-raised);
+  border: 1px solid rgba(125, 101, 88, 0.12);
+  border-radius: 24px;
+  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.neu-card:hover {
+  box-shadow: 8px 8px 18px var(--neu-dark), -8px -8px 18px var(--neu-light);
+  transform: translateY(-3px);
+}
+
+.neu-card:active {
+  box-shadow: var(--neu-shadow-button-active);
+  transform: translateY(0);
+}
+
+/* ================================================================== */
+/*  GOOEY ANIMATIONS                                                   */
+/* ================================================================== */
+
+/* Blob floating animations for background */
+@keyframes blob-float-1 {
+  0%, 100% { transform: translate(0, 0) scale(1); }
+  25% { transform: translate(60px, -40px) scale(1.15); }
+  50% { transform: translate(20px, 50px) scale(0.9); }
+  75% { transform: translate(-30px, 20px) scale(1.08); }
+}
+
+@keyframes blob-float-2 {
+  0%, 100% { transform: translate(0, 0) scale(1); }
+  25% { transform: translate(-50px, 30px) scale(1.1); }
+  50% { transform: translate(-20px, -60px) scale(0.95); }
+  75% { transform: translate(40px, -20px) scale(1.12); }
+}
+
+@keyframes blob-float-3 {
+  0%, 100% { transform: translate(0, 0) scale(1); }
+  33% { transform: translate(30px, 40px) scale(1.2); }
+  66% { transform: translate(-40px, -30px) scale(0.85); }
+}
+
+.animate-blob-1 {
+  animation: blob-float-1 14s ease-in-out infinite;
+}
+
+.animate-blob-2 {
+  animation: blob-float-2 18s ease-in-out infinite;
+  animation-delay: -4s;
+}
+
+.animate-blob-3 {
+  animation: blob-float-3 12s ease-in-out infinite;
+  animation-delay: -7s;
+}
+
+/* Page entrance */
+@keyframes page-enter {
+  0% {
+    opacity: 0;
+    transform: translateY(16px) scale(0.97);
+    filter: blur(4px);
+  }
+  100% {
+    opacity: 1;
+    transform: translateY(0) scale(1);
+    filter: blur(0);
+  }
+}
+
+.animate-page-enter {
+  animation: page-enter 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
 }
 
-/* Hide scrollbar on horizontally-scrollable pill rows */
+/* Card stagger entrance */
+@keyframes card-enter {
+  0% {
+    opacity: 0;
+    transform: translateY(24px) scale(0.95);
+  }
+  100% {
+    opacity: 1;
+    transform: translateY(0) scale(1);
+  }
+}
+
+.animate-card-enter {
+  animation: card-enter 0.4s cubic-bezier(0.4, 0, 0.2, 1) both;
+}
+
+/* Gooey press effect */
+@keyframes gooey-press {
+  0% { transform: scale(1); filter: blur(0); }
+  40% { transform: scale(0.93); filter: blur(1px); }
+  60% { transform: scale(1.03); filter: blur(0.5px); }
+  100% { transform: scale(1); filter: blur(0); }
+}
+
+.animate-gooey-press {
+  animation: gooey-press 0.45s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+/* Pulse glow for accent elements */
+@keyframes pulse-glow {
+  0%, 100% {
+    box-shadow: var(--neu-shadow-raised), 0 0 0 0 rgba(var(--accent), 0);
+  }
+  50% {
+    box-shadow: var(--neu-shadow-raised), 0 0 20px 4px var(--accent-glow);
+  }
+}
+
+/* Soft floating */
+@keyframes float-soft {
+  0%, 100% { transform: translateY(0); }
+  50% { transform: translateY(-6px); }
+}
+
+.animate-float {
+  animation: float-soft 3.5s ease-in-out infinite;
+}
+
+/* Gooey modal entrance */
+@keyframes modal-gooey-in {
+  0% {
+    opacity: 0;
+    transform: scale(0.8);
+    filter: blur(10px);
+  }
+  50% {
+    opacity: 1;
+    transform: scale(1.03);
+    filter: blur(2px);
+  }
+  100% {
+    opacity: 1;
+    transform: scale(1);
+    filter: blur(0);
+  }
+}
+
+.animate-modal-enter {
+  animation: modal-gooey-in 0.4s cubic-bezier(0.4, 0, 0.2, 1) both;
+}
+
+/* Backdrop fade */
+@keyframes backdrop-fade {
+  0% { opacity: 0; backdrop-filter: blur(0); }
+  100% { opacity: 1; backdrop-filter: blur(8px); }
+}
+
+.animate-backdrop {
+  animation: backdrop-fade 0.3s ease-out both;
+}
+
+/* Delete melt */
+@keyframes melt-away {
+  0% {
+    opacity: 1;
+    transform: scale(1) translateY(0);
+    filter: blur(0);
+  }
+  100% {
+    opacity: 0;
+    transform: scale(0.8) translateY(20px);
+    filter: blur(6px);
+  }
+}
+
+.animate-melt {
+  animation: melt-away 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
+}
+
+/* Gooey ripple on tap */
+@keyframes ripple-gooey {
+  0% {
+    transform: scale(0);
+    opacity: 0.5;
+  }
+  100% {
+    transform: scale(2.5);
+    opacity: 0;
+  }
+}
+
+/* ================================================================== */
+/*  SCROLLBAR                                                          */
+/* ================================================================== */
+
 .scrollbar-none {
   -ms-overflow-style: none;
   scrollbar-width: none;
@@ -51,3 +351,403 @@ body {
 .scrollbar-none::-webkit-scrollbar {
   display: none;
 }
+
+/* Custom themed scrollbar */
+::-webkit-scrollbar {
+  width: 6px;
+}
+::-webkit-scrollbar-track {
+  background: var(--bg);
+}
+::-webkit-scrollbar-thumb {
+  background: var(--text-secondary);
+  border-radius: 3px;
+  opacity: 0.3;
+}
+::-webkit-scrollbar-thumb:hover {
+  background: var(--accent);
+}
+
+/* ================================================================== */
+/*  UTILITY OVERRIDES                                                  */
+/* ================================================================== */
+
+/* Smooth all transitions globally */
+*, *::before, *::after {
+  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+/* Selection color */
+::selection {
+  background: var(--accent);
+  color: white;
+}
+
+/* ================================================================== */
+/*  ADDITIONAL NEW STYLES FOR Restructured LAYOUT & GOOEY EFFECTS       */
+/* ================================================================== */
+
+/* 1. Carousel component container & behaviors */
+.carousel-container {
+  display: flex;
+  overflow-x: auto;
+  scroll-behavior: smooth;
+  scroll-snap-type: x mandatory;
+  -webkit-overflow-scrolling: touch;
+}
+
+.carousel-card {
+  scroll-snap-align: start;
+  flex: 0 0 280px;
+  max-width: 280px;
+}
+
+@media (min-width: 640px) {
+  .carousel-card {
+    flex: 0 0 340px;
+    max-width: 340px;
+  }
+}
+
+/* Edge fading gradient mask for carousel */
+.carousel-mask {
+  mask-image: linear-gradient(to right, transparent, white 20px, white calc(100% - 20px), transparent);
+  -webkit-mask-image: linear-gradient(to right, transparent, white 20px, white calc(100% - 20px), transparent);
+}
+
+/* 2. Gooey tab selectors styling */
+.gooey-tab-container {
+  position: relative;
+  display: flex;
+  padding: 6px;
+  background: var(--bg);
+  box-shadow: var(--neu-shadow-inset);
+  border-radius: 20px;
+}
+
+/* High-contrast container for gooey filter */
+.gooey-filter-layer {
+  position: absolute;
+  inset: 0;
+  pointer-events: none;
+  filter: url(#gooey-medium);
+  border-radius: 20px;
+  overflow: hidden;
+}
+
+.gooey-filter-blob {
+  position: absolute;
+  height: calc(100% - 12px);
+  top: 6px;
+  background: var(--accent);
+  border-radius: 16px;
+  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
+}
+
+/* Rating scale selection gooey blobs */
+.rating-bar-container {
+  position: relative;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 4px;
+  background: var(--bg);
+  box-shadow: var(--neu-shadow-inset);
+  border-radius: 24px;
+}
+
+.rating-filter-layer {
+  position: absolute;
+  inset: 0;
+  pointer-events: none;
+  filter: url(#gooey-rating);
+  border-radius: 24px;
+}
+
+.rating-blob {
+  position: absolute;
+  width: 44px;
+  height: 44px;
+  background: var(--gold);
+  border-radius: 50%;
+  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
+}
+
+/* Photo upload dropzone states */
+.upload-dropzone {
+  border: 2px dashed var(--text-secondary);
+  border-radius: 20px;
+  transition: all 0.3s ease;
+  background: var(--bg);
+  box-shadow: var(--neu-shadow-subtle);
+}
+
+.upload-dropzone:hover {
+  border-color: var(--accent);
+  box-shadow: var(--neu-shadow-raised);
+}
+
+.upload-dropzone.active-drop {
+  border-color: var(--accent);
+  background: rgba(var(--accent-glow), 0.05);
+  box-shadow: var(--neu-shadow-inset);
+}
+
+/* Liquid scale up for images */
+@keyframes liquid-pop {
+  0% { transform: scale(0.6) rotate(-5deg); filter: blur(4px); opacity: 0; }
+  60% { transform: scale(1.05) rotate(2deg); filter: blur(0); opacity: 0.9; }
+  100% { transform: scale(1) rotate(0deg); opacity: 1; }
+}
+
+.animate-liquid-pop {
+  animation: liquid-pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
+}
+
+/* Quick tag anims */
+@keyframes tag-appear {
+  0% { transform: translateY(8px); opacity: 0; }
+  100% { transform: translateY(0); opacity: 1; }
+}
+
+.tag-anim {
+  animation: tag-appear 0.3s cubic-bezier(0.4, 0, 0.2, 1) both;
+}
+
+/* Pulse keyframes for active upload */
+@keyframes pulse-border {
+  0%, 100% { border-color: var(--text-secondary); }
+  50% { border-color: var(--accent); }
+}
+
+.animate-pulse-border {
+  animation: pulse-border 2s infinite ease-in-out;
+}
+
+/* Success save animation */
+@keyframes checkmark-pop {
+  0% { transform: scale(0.5); opacity: 0; }
+  50% { transform: scale(1.2); }
+  100% { transform: scale(1); opacity: 1; }
+}
+
+.animate-success-pop {
+  animation: checkmark-pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
+}
+
+/* Bottom sheet slide-up animation for mobile */
+@keyframes sheet-slide-up {
+  0% {
+    transform: translateY(100%);
+  }
+  100% {
+    transform: translateY(0);
+  }
+}
+
+.animate-sheet-enter {
+  animation: sheet-slide-up 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
+}
+
+/* GSAP Initial States to avoid FOUC */
+.gsap-reveal {
+  opacity: 0;
+  will-change: transform, opacity;
+}
+
+/* ================================================================== */
+/*  OFFLINE SYNC UI                                                    */
+/* ================================================================== */
+
+/* Fixed offline banner at the top */
+.offline-banner {
+  background: linear-gradient(135deg, #4E342E, #7D6558);
+  color: #F8F1E7;
+  backdrop-filter: blur(12px);
+  box-shadow: 0 4px 20px rgba(78, 52, 46, 0.35), 0 1px 3px rgba(0, 0, 0, 0.2);
+  animation: offline-slide-in 0.45s cubic-bezier(0.16, 1, 0.3, 1) both;
+  letter-spacing: 0.02em;
+}
+
+@keyframes offline-slide-in {
+  0% { transform: translateY(-100%); opacity: 0; }
+  100% { transform: translateY(0); opacity: 1; }
+}
+
+/* Sync toast (success notification when reconnected) */
+.sync-toast {
+  background: linear-gradient(135deg, #A3B18A, #8F9E75);
+  color: #1C1410;
+  font-weight: 600;
+  box-shadow: 0 8px 32px rgba(163, 177, 138, 0.4), var(--neu-shadow-raised);
+  animation: toast-pop-in 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
+}
+
+@keyframes toast-pop-in {
+  0% { transform: translate(-50%, -20px) scale(0.85); opacity: 0; }
+  100% { transform: translate(-50%, 0) scale(1); opacity: 1; }
+}
+
+/* Pending sync badge on carousel cards */
+.pending-sync-badge {
+  position: absolute;
+  top: 12px;
+  left: 12px;
+  z-index: 10;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 26px;
+  height: 26px;
+  border-radius: 50%;
+  background: linear-gradient(135deg, #D4A373, #F4C542);
+  color: #4E342E;
+  box-shadow: 0 2px 8px rgba(212, 163, 115, 0.4);
+  animation: badge-pulse 2s ease-in-out infinite;
+}
+
+@keyframes badge-pulse {
+  0%, 100% { box-shadow: 0 2px 8px rgba(212, 163, 115, 0.4); transform: scale(1); }
+  50% { box-shadow: 0 2px 16px rgba(244, 197, 66, 0.7); transform: scale(1.08); }
+}
+
+/* Pending sync pill in activity feed list */
+.pending-sync-pill {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  padding: 3px 8px;
+  border-radius: 999px;
+  font-size: 10px;
+  font-weight: 600;
+  letter-spacing: 0.03em;
+  text-transform: uppercase;
+  background: linear-gradient(135deg, #D4A373, #F4C542);
+  color: #4E342E;
+  box-shadow: 0 1px 4px rgba(212, 163, 115, 0.3);
+  white-space: nowrap;
+}
+
+/* ================================================================== */
+/*  UI PERFORMANCE & VIRTUALIZATION OPTIMIZATIONS                       */
+/* ================================================================== */
+
+/* Virtualization performance helper for list feed items */
+.feed-list-item {
+  content-visibility: auto;
+  contain-intrinsic-size: auto 82px;
+}
+
+/* Performance boundary for continuous gooey SVG blobs to avoid main-thread paint invalidations */
+.blob-container {
+  contain: strict;
+  will-change: transform;
+}
+
+.animate-blob-1, .animate-blob-2, .animate-blob-3 {
+  will-change: transform;
+}
+
+/* Disable high-cost effects if user requests reduced motion */
+@media (prefers-reduced-motion: reduce) {
+  .animate-blob-1,
+  .animate-blob-2,
+  .animate-blob-3,
+  .animate-float,
+  .animate-page-enter,
+  .animate-card-enter,
+  .animate-sheet-enter,
+  .animate-modal-enter,
+  .animate-backdrop,
+  .offline-banner,
+  .sync-toast,
+  .pending-sync-badge {
+    animation: none !important;
+    transition: none !important;
+  }
+}
+
+/* ================================================================== */
+/*  LEAFLET MAP INTEGRATION & POPUP THEME                             */
+/* ================================================================== */
+
+/* Container resets and theme bindings */
+.leaflet-container {
+  background: var(--bg) !important;
+  font-family: var(--font-work-sans), sans-serif !important;
+}
+
+/* Custom popups matching Neumorphism colors and styles */
+.leaflet-popup-content-wrapper {
+  background: var(--surface) !important;
+  color: var(--text-primary) !important;
+  border-radius: 1.25rem !important; /* 20px matching rounded-3xl/2xl cards */
+  border: 1px solid rgba(107, 93, 79, 0.15) !important; /* using fallback border */
+  box-shadow: var(--neu-shadow-raised) !important;
+  padding: 0 !important;
+}
+
+.leaflet-popup-tip {
+  background: var(--surface) !important;
+  border: 1px solid rgba(107, 93, 79, 0.15) !important;
+}
+
+.leaflet-popup-content {
+  margin: 12px !important;
+  font-family: var(--font-work-sans), sans-serif !important;
+  font-size: 0.875rem !important;
+  line-height: 1.25 !important;
+}
+
+.leaflet-popup-close-button {
+  color: var(--text-secondary) !important;
+  padding: 8px !important;
+  top: 4px !important;
+  right: 4px !important;
+  font-size: 14px !important;
+}
+
+.leaflet-popup-close-button:hover {
+  background: transparent !important;
+  color: var(--accent) !important;
+}
+
+/* Zoom controls customization */
+.leaflet-bar {
+  border: none !important;
+  box-shadow: var(--neu-shadow-button) !important;
+  border-radius: 12px !important;
+  overflow: hidden;
+  background: var(--surface) !important;
+}
+
+.leaflet-bar a {
+  background-color: var(--surface) !important;
+  color: var(--text-primary) !important;
+  border-bottom: 1px solid rgba(107, 93, 79, 0.15) !important;
+  transition: all 0.2s ease;
+}
+
+.leaflet-bar a:hover {
+  color: var(--accent) !important;
+  background-color: var(--bg) !important;
+}
+
+.leaflet-bar a:first-child {
+  border-top-left-radius: 12px !important;
+  border-top-right-radius: 12px !important;
+}
+
+.leaflet-bar a:last-child {
+  border-bottom-left-radius: 12px !important;
+  border-bottom-right-radius: 12px !important;
+  border-bottom: none !important;
+}
+
+/* Dark mode map tile filter */
+.dark .leaflet-tile-container {
+  filter: invert(100%) hue-rotate(180deg) brightness(95%) contrast(90%);
+}
+
+
+
diff --git a/app/layout.tsx b/app/layout.tsx
index be45053..18b6a64 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -1,25 +1,8 @@
 import type { Metadata } from "next";
-import { Fraunces, Work_Sans, Space_Mono } from "next/font/google";
+import { AuthProvider } from "@/lib/auth";
+import { ToastProvider } from "@/lib/toast";
 import "./globals.css";
 
-const fraunces = Fraunces({
-  variable: "--font-fraunces",
-  subsets: ["latin"],
-  weight: ["600"],
-});
-
-const workSans = Work_Sans({
-  variable: "--font-work-sans",
-  subsets: ["latin"],
-  weight: ["400", "500"],
-});
-
-const spaceMono = Space_Mono({
-  variable: "--font-space-mono",
-  subsets: ["latin"],
-  weight: ["400", "700"],
-});
-
 export const metadata: Metadata = {
   title: "KeepCheck",
   description:
@@ -38,10 +21,15 @@ export default function RootLayout({
   return (
     <html
       lang="en"
-      className={`${fraunces.variable} ${workSans.variable} ${spaceMono.variable} h-full antialiased`}
+      className="h-full antialiased"
       suppressHydrationWarning
     >
       <head>
+        {/* Google Fonts Link */}
+        <link rel="preconnect" href="https://fonts.googleapis.com" />
+        <link rel="preconnect" href="https://fonts.gstatic.com" crossOrigin="anonymous" />
+        <link href="https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,600&family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700&family=Work+Sans:wght@400;500;600;700&display=swap" rel="stylesheet" />
+
         {/* Theme persistence helper to avoid flash of light/dark mode */}
         <script
           dangerouslySetInnerHTML={{
@@ -105,7 +93,11 @@ export default function RootLayout({
           }}
         />
       </head>
-      <body className="min-h-full flex flex-col">{children}</body>
+      <body className="min-h-full flex flex-col" suppressHydrationWarning>
+        <ToastProvider>
+          <AuthProvider>{children}</AuthProvider>
+        </ToastProvider>
+      </body>
     </html>
   );
 }
diff --git a/app/login/page.tsx b/app/login/page.tsx
new file mode 100644
index 0000000..0ddc8b1
--- /dev/null
+++ b/app/login/page.tsx
@@ -0,0 +1,202 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import { useRouter } from "next/navigation";
+import { useAuth, type QuickLoginAccount } from "@/lib/auth";
+import { useToast } from "@/lib/toast";
+
+/* ------------------------------------------------------------------ */
+/*  Google icon SVG                                                    */
+/* ------------------------------------------------------------------ */
+function GoogleIcon({ className = "h-5 w-5" }: { className?: string }) {
+  return (
+    <svg className={className} viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+      <path d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92a5.06 5.06 0 0 1-2.2 3.32v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.1z" fill="#4285F4" />
+      <path d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z" fill="#34A853" />
+      <path d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z" fill="#FBBC05" />
+      <path d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z" fill="#EA4335" />
+    </svg>
+  );
+}
+
+/* ------------------------------------------------------------------ */
+/*  Quick-login account row                                            */
+/* ------------------------------------------------------------------ */
+function QuickLoginRow({
+  account,
+  onClick,
+}: {
+  account: QuickLoginAccount;
+  onClick: () => void;
+}) {
+  return (
+    <button
+      type="button"
+      onClick={onClick}
+      className="neu-raised group flex w-full items-center gap-3 rounded-2xl p-3 transition-all duration-300 hover:scale-[1.02] active:scale-[0.98] active:shadow-neu-inset cursor-pointer"
+    >
+      {account.photoURL ? (
+        <img
+          src={account.photoURL}
+          alt=""
+          className="h-10 w-10 rounded-full object-cover ring-2 ring-accent/30"
+          referrerPolicy="no-referrer"
+        />
+      ) : (
+        <div className="flex h-10 w-10 items-center justify-center rounded-full bg-gold/25 text-[#4E342E] font-bold text-sm">
+          {(account.displayName?.[0] ?? account.email?.[0] ?? "?").toUpperCase()}
+        </div>
+      )}
+      <div className="min-w-0 flex-1 text-left">
+        <p className="truncate text-sm font-semibold text-text-primary">
+          {account.displayName ?? "User"}
+        </p>
+        <p className="truncate text-xs text-text-secondary">
+          {account.email ?? "No email"}
+        </p>
+      </div>
+      <svg
+        className="h-4 w-4 text-text-secondary/50 transition-transform group-hover:translate-x-0.5"
+        fill="none"
+        viewBox="0 0 24 24"
+        stroke="currentColor"
+        strokeWidth={2}
+      >
+        <path strokeLinecap="round" strokeLinejoin="round" d="M9 5l7 7-7 7" />
+      </svg>
+    </button>
+  );
+}
+
+/* ------------------------------------------------------------------ */
+/*  Login page                                                         */
+/* ------------------------------------------------------------------ */
+export default function LoginPage() {
+  const { user, loading, signInWithGoogle, quickLoginAccounts } = useAuth();
+  const { showToast } = useToast();
+  const router = useRouter();
+  const [signingIn, setSigningIn] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  // Redirect if already logged in.
+  useEffect(() => {
+    if (!loading && user) {
+      router.replace("/");
+    }
+  }, [user, loading, router]);
+
+  async function handleSignIn(email?: string) {
+    setSigningIn(true);
+    setError(null);
+    try {
+      await signInWithGoogle(email);
+    } catch {
+      const msg = "Sign-in failed. Please try again.";
+      setError(msg);
+      showToast(msg, "error");
+    } finally {
+      setSigningIn(false);
+    }
+  }
+
+  // Don't render until auth state resolves (prevents flash).
+  if (loading || user) {
+    return (
+      <div className="flex min-h-dvh items-center justify-center bg-bg">
+        <div className="h-10 w-10 animate-spin rounded-full border-4 border-text-secondary/20 border-t-accent" />
+      </div>
+    );
+  }
+
+  return (
+    <div className="relative flex min-h-dvh flex-col items-center justify-center overflow-hidden bg-bg px-5 py-10">
+      {/* ---- SVG Gooey filter (reused by blobs) ---- */}
+      <svg className="absolute h-0 w-0" aria-hidden="true">
+        <defs>
+          <filter id="gooey-login">
+            <feGaussianBlur in="SourceGraphic" stdDeviation="12" result="blur" />
+            <feColorMatrix
+              in="blur"
+              mode="matrix"
+              values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 20 -8"
+              result="gooey"
+            />
+            <feComposite in="SourceGraphic" in2="gooey" operator="atop" />
+          </filter>
+        </defs>
+      </svg>
+
+      {/* ---- Animated background blobs ---- */}
+      <div className="pointer-events-none absolute inset-0 overflow-hidden" style={{ filter: "url(#gooey-login)" }}>
+        <div className="animate-blob-1 absolute -top-24 -left-24 h-72 w-72 rounded-full bg-accent/15" />
+        <div className="animate-blob-2 absolute -bottom-32 -right-20 h-80 w-80 rounded-full bg-category-cafe/20" />
+        <div className="animate-blob-3 absolute top-1/3 right-1/4 h-48 w-48 rounded-full bg-gold/20" />
+      </div>
+
+      {/* ---- Main card ---- */}
+      <div className="relative z-10 w-full max-w-sm animate-page-enter">
+        {/* Logo + title */}
+        <div className="mb-8 text-center">
+          <div className="neu-raised mx-auto mb-5 flex h-20 w-20 items-center justify-center rounded-3xl">
+            <img
+              src="/KeepCheck-Logo.png"
+              alt="KeepCheck"
+              className="h-14 w-14 object-contain"
+            />
+          </div>
+          <h1 className="text-3xl font-serif font-bold tracking-tight text-text-primary">
+            Keep<span className="text-category-cafe">Check</span>
+          </h1>
+          <p className="mt-2 text-sm text-text-secondary">
+            Track &amp; rate every café and restaurant.
+          </p>
+        </div>
+
+        {/* Google sign-in button */}
+        <button
+          type="button"
+          onClick={() => handleSignIn()}
+          disabled={signingIn}
+          className="neu-raised group flex w-full items-center justify-center gap-3 rounded-2xl px-6 py-4 text-sm font-semibold text-text-primary transition-all duration-300 hover:scale-[1.02] active:scale-[0.97] active:shadow-neu-inset disabled:opacity-50 cursor-pointer"
+        >
+          {signingIn ? (
+            <div className="h-5 w-5 animate-spin rounded-full border-2 border-text-secondary/30 border-t-accent" />
+          ) : (
+            <GoogleIcon />
+          )}
+          {signingIn ? "Signing in\u2026" : "Continue with Google"}
+        </button>
+
+        {/* Error message */}
+        {error && (
+          <p className="mt-3 text-center text-xs text-red-500 animate-page-enter">
+            {error}
+          </p>
+        )}
+
+        {/* Quick login history */}
+        {quickLoginAccounts.length > 0 && (
+          <div className="mt-8 animate-page-enter" style={{ animationDelay: "150ms" }}>
+            <p className="mb-3 text-center text-xs font-medium uppercase tracking-wider text-text-secondary">
+              Recent accounts
+            </p>
+            <div className="flex flex-col gap-2.5">
+               {quickLoginAccounts.map((account) => (
+                <QuickLoginRow
+                  key={account.uid}
+                  account={account}
+                  onClick={() => handleSignIn(account.email ?? undefined)}
+                />
+              ))}
+            </div>
+          </div>
+        )}
+
+        {/* Footer */}
+        <p className="mt-10 text-center text-[11px] text-text-secondary/60">
+          Your data is stored securely and syncs across devices.
+        </p>
+      </div>
+    </div>
+  );
+}
diff --git a/app/manifest.ts b/app/manifest.ts
index c7af232..05af500 100644
--- a/app/manifest.ts
+++ b/app/manifest.ts
@@ -8,8 +8,8 @@ export default function manifest(): MetadataRoute.Manifest {
       "Log and rate your experiences at food and beverage businesses.",
     start_url: "/",
     display: "standalone",
-    background_color: "#ffffff",
-    theme_color: "#000000",
+    background_color: "#F8F1E7",
+    theme_color: "#4E342E",
     icons: [
       {
         src: "/KeepCheck-Logo.png",
diff --git a/app/map/page.tsx b/app/map/page.tsx
new file mode 100644
index 0000000..a74b1ea
--- /dev/null
+++ b/app/map/page.tsx
@@ -0,0 +1,102 @@
+"use client";
+
+import { useLiveQuery } from "dexie-react-hooks";
+import { db, type FoodSpotLog } from "../db";
+import Link from "next/link";
+import dynamic from "next/dynamic";
+import { ChevronLeft } from "lucide-react";
+import AuthGuard from "@/components/AuthGuard";
+import { useAuth } from "@/lib/auth";
+
+// Dynamically import the map component with SSR disabled
+const SpotsMap = dynamic(() => import("@/components/SpotsMap"), {
+  ssr: false,
+  loading: () => (
+    <div className="py-20 text-center text-sm font-mono text-text-secondary animate-pulse neu-raised rounded-2xl bg-bg/40 border border-text-secondary/15 h-[450px] flex items-center justify-center">
+      Loading Map Engine…
+    </div>
+  ),
+});
+
+export default function MapPage() {
+  const { user } = useAuth();
+  
+  // Query spots from Dexie. We only fetch if the user is authenticated.
+  const spots = useLiveQuery<FoodSpotLog[]>(
+    () => {
+      if (!user) return [];
+      return db.spots.where("userId").equals(user.uid).toArray();
+    },
+    [user]
+  );
+
+  // Filter spots that have both coordinates
+  const geotaggedSpots = spots
+    ? spots.filter((spot) => spot.latitude !== undefined && spot.longitude !== undefined)
+    : [];
+
+  return (
+    <AuthGuard>
+      {/* ---- Background blobs (GPU-contained) ---- */}
+      <div className="pointer-events-none fixed inset-0 overflow-hidden opacity-40 blob-container" style={{ filter: "url(#gooey-bg)" }}>
+        <div className="animate-blob-1 absolute -top-32 -left-32 h-80 w-80 rounded-full bg-accent/15" />
+        <div className="animate-blob-2 absolute -bottom-40 -right-24 h-96 w-96 rounded-full bg-category-cafe/15" />
+        <div className="animate-blob-3 absolute top-1/2 left-1/3 h-56 w-56 rounded-full bg-gold/15" />
+      </div>
+
+      {/* SVG Gooey filters for background */}
+      <svg className="absolute h-0 w-0" aria-hidden="true">
+        <defs>
+          <filter id="gooey-bg">
+            <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur" />
+            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="gooey" />
+            <feComposite in="SourceGraphic" in2="gooey" operator="atop" />
+          </filter>
+        </defs>
+      </svg>
+
+      <div className="relative mx-auto flex min-h-dvh w-full max-w-screen-lg flex-col px-4 sm:px-6 lg:px-8 py-6 sm:py-10">
+        {/* ---- Header ---- */}
+        <header className="relative z-40 mb-6 sm:mb-8 flex items-center justify-between">
+          <div className="flex items-center gap-4">
+            <Link
+              href="/"
+              aria-label="Back to home"
+              className="neu-button flex h-11 w-11 items-center justify-center rounded-full text-text-secondary cursor-pointer"
+            >
+              <ChevronLeft className="h-5 w-5" />
+            </Link>
+            <div>
+              <h1 className="text-2xl sm:text-3xl font-serif font-bold tracking-tight text-text-primary">
+                Keep<span className="text-category-cafe">Check</span> <span className="text-text-secondary font-sans font-normal text-lg sm:text-xl ml-1 sm:ml-2">/ Map</span>
+              </h1>
+            </div>
+          </div>
+        </header>
+
+        {/* ---- Main Map Content ---- */}
+        <main className="flex-1 flex flex-col justify-center">
+          {spots === undefined ? (
+            <div className="py-20 text-center text-sm font-mono text-text-secondary animate-pulse neu-raised rounded-2xl bg-bg/40 border border-text-secondary/15 h-[450px] flex items-center justify-center">
+              Loading spots data…
+            </div>
+          ) : geotaggedSpots.length === 0 ? (
+            <div className="py-16 text-center neu-raised bg-bg/40 border border-dashed border-text-secondary/25 rounded-3xl max-w-md mx-auto px-6 w-full">
+              <div className="neu-raised bg-bg inline-flex h-20 w-20 items-center justify-center rounded-3xl mx-auto mb-4">
+                <span className="text-3xl">📍</span>
+              </div>
+              <h2 className="text-base font-semibold text-text-primary mb-2">No locations found</h2>
+              <p className="text-sm text-text-secondary font-medium leading-relaxed">
+                None of your logged spots have location coordinates. Submit a new spot and allow location access to see them on the map!
+              </p>
+            </div>
+          ) : (
+            <div className="flex-1 h-full w-full relative">
+              <SpotsMap spots={geotaggedSpots} />
+            </div>
+          )}
+        </main>
+      </div>
+    </AuthGuard>
+  );
+}
diff --git a/app/offline/RetryButton.tsx b/app/offline/RetryButton.tsx
index 15438ef..8f462ae 100644
--- a/app/offline/RetryButton.tsx
+++ b/app/offline/RetryButton.tsx
@@ -5,7 +5,7 @@ export default function RetryButton() {
     <button
       type="button"
       onClick={() => window.location.reload()}
-      className="mt-8 rounded-lg bg-accent px-6 py-3 text-sm font-semibold text-white transition-all hover:opacity-90 active:scale-95 cursor-pointer min-h-[44px]"
+      className="mt-8 rounded-xl bg-gold px-6 py-3 text-sm font-bold text-[#4E342E] transition-all hover:bg-gold/90 active:scale-95 cursor-pointer min-h-[44px] shadow-neu-button"
     >
       Try Again
     </button>
diff --git a/app/offline/page.tsx b/app/offline/page.tsx
index 52c4c71..2152893 100644
--- a/app/offline/page.tsx
+++ b/app/offline/page.tsx
@@ -52,7 +52,7 @@ export default function OfflinePage() {
 
       {/* Branding */}
       <p className="mt-12 text-xs font-serif text-text-secondary/60">
-        Keep<span className="text-accent font-bold">Check</span>
+        Keep<span className="text-category-cafe font-bold">Check</span>
       </p>
     </div>
   );
diff --git a/app/page.tsx b/app/page.tsx
index 8785c23..b9d812b 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -1,11 +1,33 @@
 "use client";
 
-import { useState, useEffect, useMemo, useRef, type FormEvent } from "react";
+import { useState, useEffect, useMemo, useRef, useCallback, memo, type FormEvent } from "react";
 import { useLiveQuery } from "dexie-react-hooks";
 import { db, type FoodSpotLog, type SpotCategory } from "./db";
-import { makeThumbnail, compressToBlob } from "@/utils/image";
+import Link from "next/link";
+import { makeThumbnail, compressToBlob, compressBlobToSafeBase64 } from "@/utils/image";
 import SpotDetailModal from "@/components/SpotDetailModal";
-import { Trash2, Camera } from "lucide-react";
+import AuthGuard from "@/components/AuthGuard";
+import { useAuth } from "@/lib/auth";
+import { useToast } from "@/lib/toast";
+import {
+  generateSpotId,
+  writeSpotToFirestore,
+  deleteSpotFromFirestore,
+  subscribeToSpots,
+  type FirestoreSpotChange,
+  addImageToFirestore,
+  deleteImagesForSpotFromFirestore,
+  subscribeToImages,
+} from "@/lib/firestore";
+import {
+  syncSpotToFirestore,
+  queuePendingDelete,
+  startOnlineListener,
+  getPendingDeletes,
+} from "@/lib/offlineSync";
+import { Trash2, Camera, LogOut, ChevronLeft, ChevronRight, Clock, Plus, X, WifiOff, Cloud, CloudOff, MapPin, Locate, Navigation, LayoutList, LayoutGrid } from "lucide-react";
+import LocationPickerModal from "@/components/LocationPickerModal";
+import { gsap } from "gsap";
 
 /* ------------------------------------------------------------------ */
 /*  Types                                                              */
@@ -13,10 +35,22 @@ import { Trash2, Camera } from "lucide-react";
 type SortMode = "newest" | "highest" | "lowest";
 type CategoryFilter = "All" | SpotCategory;
 
+/* ------------------------------------------------------------------ */
+/*  Debounce hook                                                      */
+/* ------------------------------------------------------------------ */
+function useDebouncedValue<T>(value: T, delayMs: number): T {
+  const [debounced, setDebounced] = useState(value);
+  useEffect(() => {
+    const timer = setTimeout(() => setDebounced(value), delayMs);
+    return () => clearTimeout(timer);
+  }, [value, delayMs]);
+  return debounced;
+}
+
 /* ------------------------------------------------------------------ */
 /*  Theme toggle                                                       */
 /* ------------------------------------------------------------------ */
-function ThemeToggle({
+const ThemeToggle = memo(function ThemeToggle({
   dark,
   onToggle,
 }: {
@@ -28,155 +62,145 @@ function ThemeToggle({
       type="button"
       onClick={onToggle}
       aria-label={dark ? "Switch to light mode" : "Switch to dark mode"}
-      className="flex h-11 w-11 items-center justify-center rounded-full border border-text-secondary/20 bg-surface text-text-secondary shadow-sm transition-all hover:bg-bg active:scale-95 cursor-pointer"
+      className="neu-button flex h-11 w-11 items-center justify-center rounded-full text-text-secondary cursor-pointer"
     >
       {dark ? (
-        /* Sun icon */
-        <svg
-          xmlns="http://www.w3.org/2000/svg"
-          width="20"
-          height="20"
-          viewBox="0 0 24 24"
-          fill="none"
-          stroke="currentColor"
-          strokeWidth="2"
-          strokeLinecap="round"
-          strokeLinejoin="round"
-        >
+        <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
           <circle cx="12" cy="12" r="4" />
-          <path d="M12 2v2" />
-          <path d="M12 20v2" />
-          <path d="m4.93 4.93 1.41 1.41" />
-          <path d="m17.66 17.66 1.41 1.41" />
-          <path d="M2 12h2" />
-          <path d="M20 12h2" />
-          <path d="m6.34 17.66-1.41 1.41" />
-          <path d="m19.07 4.93-1.41 1.41" />
+          <path d="M12 2v2" /><path d="M12 20v2" />
+          <path d="m4.93 4.93 1.41 1.41" /><path d="m17.66 17.66 1.41 1.41" />
+          <path d="M2 12h2" /><path d="M20 12h2" />
+          <path d="m6.34 17.66-1.41 1.41" /><path d="m19.07 4.93-1.41 1.41" />
         </svg>
       ) : (
-        /* Moon icon */
-        <svg
-          xmlns="http://www.w3.org/2000/svg"
-          width="20"
-          height="20"
-          viewBox="0 0 24 24"
-          fill="none"
-          stroke="currentColor"
-          strokeWidth="2"
-          strokeLinecap="round"
-          strokeLinejoin="round"
-        >
+        <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
           <path d="M12 3a6 6 0 0 0 9 9 9 9 0 1 1-9-9Z" />
         </svg>
       )}
     </button>
   );
-}
+});
 
 /* ------------------------------------------------------------------ */
-/*  Rating pill component                                              */
+/*  Gooey Category Selector Component                                  */
 /* ------------------------------------------------------------------ */
-function RatingPills({
+const CategoryPills = memo(function CategoryPills({
   value,
   onChange,
 }: {
-  value: number;
-  onChange: (n: number) => void;
+  value: SpotCategory;
+  onChange: (c: SpotCategory) => void;
 }) {
   return (
-    <div className="flex flex-wrap gap-2">
-      {Array.from({ length: 10 }, (_, i) => i + 1).map((n) => (
-        <button
-          key={n}
-          type="button"
-          onClick={() => onChange(n)}
-          className={`
-            h-11 w-11 rounded-full text-sm font-bold font-mono
-            transition-all duration-150 cursor-pointer
-            ${n === value
-              ? "bg-accent text-white shadow-md scale-110"
-              : "bg-bg text-text-secondary hover:opacity-80 active:opacity-60"
-            }
-          `}
-        >
-          {n}
-        </button>
-      ))}
+    <div className="relative w-full overflow-hidden p-1.5 bg-bg/50 shadow-neu-inset rounded-2xl flex min-h-[50px] items-center">
+      {/* Gooey filter layer for background */}
+      <div className="absolute inset-0 pointer-events-none rounded-2xl overflow-hidden" style={{ filter: "url(#gooey-medium)" }}>
+        <div
+          className={`absolute h-9 rounded-xl transition-all duration-300 ease-out ${value === "Cafe" ? "bg-category-cafe" : "bg-category-restaurant"
+            }`}
+          style={{
+            width: "calc(50% - 10px)",
+            left: value === "Cafe" ? "6px" : "calc(50% + 4px)",
+            top: "7px",
+          }}
+        />
+      </div>
+
+      {/* Actual buttons (crisp text layer above) */}
+      <button
+        type="button"
+        onClick={() => onChange("Cafe")}
+        className={`relative z-10 w-1/2 rounded-xl py-2 text-sm font-semibold transition-colors duration-300 min-h-[38px] cursor-pointer ${value === "Cafe" ? "text-white font-bold" : "text-text-secondary hover:text-text-primary"
+          }`}
+      >
+        ☕ Cafe
+      </button>
+      <button
+        type="button"
+        onClick={() => onChange("Restaurant")}
+        className={`relative z-10 w-1/2 rounded-xl py-2 text-sm font-semibold transition-colors duration-300 min-h-[38px] cursor-pointer ${value === "Restaurant" ? "text-white font-bold" : "text-text-secondary hover:text-text-primary"
+          }`}
+      >
+        🍽️ Restaurant
+      </button>
     </div>
   );
-}
+});
 
 /* ------------------------------------------------------------------ */
-/*  Category pill selector (form)                                      */
+/*  Gooey Rating Selector Component                                    */
 /* ------------------------------------------------------------------ */
-const CATEGORIES: SpotCategory[] = ["Cafe", "Restaurant"];
-
-function CategoryPills({
+const RatingPills = memo(function RatingPills({
   value,
   onChange,
 }: {
-  value: SpotCategory;
-  onChange: (c: SpotCategory) => void;
+  value: number;
+  onChange: (n: number) => void;
 }) {
   return (
-    <div className="flex gap-2">
-      {CATEGORIES.map((cat) => {
-        const active = cat === value;
-        const colors: Record<SpotCategory, { active: string; idle: string }> = {
-          Cafe: {
-            active: "bg-category-cafe text-white shadow-md",
-            idle: "bg-bg text-text-secondary hover:opacity-85",
-          },
-          Restaurant: {
-            active: "bg-category-restaurant text-white shadow-md",
-            idle: "bg-bg text-text-secondary hover:opacity-85",
-          },
-        };
+    <div className="relative w-full p-1.5 bg-bg/50 shadow-neu-inset rounded-2xl flex justify-between items-center min-h-[52px]">
+      {/* Gooey filter layer */}
+      <div className="absolute inset-0 pointer-events-none overflow-hidden rounded-2xl" style={{ filter: "url(#gooey-rating)" }}>
+        <div
+          className="absolute h-9 w-9 rounded-full bg-gold transition-all duration-300 ease-out"
+          style={{
+            left: `calc(6px + ${(value - 1)} * (100% - 48px) / 9)`,
+            top: "8px",
+          }}
+        />
+      </div>
+
+      {/* Numbers */}
+      {Array.from({ length: 10 }, (_, i) => i + 1).map((n) => {
+        const active = n === value;
         return (
           <button
-            key={cat}
+            key={n}
             type="button"
-            onClick={() => onChange(cat)}
-            className={`rounded-full px-5 py-2.5 text-sm font-semibold transition-all duration-150 cursor-pointer min-h-[44px] ${active ? colors[cat].active : colors[cat].idle
-              }`}
+            onClick={() => onChange(n)}
+            className={`
+              relative z-10 h-9 w-9 rounded-full text-xs sm:text-sm font-bold font-mono
+              transition-colors duration-300 cursor-pointer flex items-center justify-center
+              ${active ? "text-white font-bold scale-105" : "text-text-secondary hover:text-text-primary"}
+            `}
           >
-            {cat === "Cafe" ? "☕ Cafe" : "🍽️ Restaurant"}
+            {n}
           </button>
         );
       })}
     </div>
   );
-}
+});
 
 /* ------------------------------------------------------------------ */
-/*  Category badge (card display - sticker treatment)                  */
+/*  Category badge (card display)                                      */
 /* ------------------------------------------------------------------ */
-function CategoryBadge({ category, seed = 0 }: { category: SpotCategory; seed?: number }) {
-  const styles: Record<SpotCategory, string> = {
-    Cafe: "bg-category-cafe text-white",
-    Restaurant: "bg-category-restaurant text-white",
-  };
-  const label = category === "Cafe" ? "☕ Cafe" : "🍽️ Restaurant";
-  const rotation = seed % 2 === 0 ? "rotate-2" : "-rotate-2";
+const CategoryBadge = memo(function CategoryBadge({ category }: { category: SpotCategory }) {
+  const isCafe = category === "Cafe";
+  const label = isCafe ? "☕ Cafe" : "🍽️ Restaurant";
+  const styles = isCafe
+    ? "bg-[#A3B18A] text-[#1C1410] font-bold shadow-sm"
+    : "bg-[#4E342E] text-[#F8F1E7] font-bold shadow-sm";
 
   return (
     <span
-      className={`inline-flex items-center rounded px-2 py-0.5 text-[10px] font-semibold tracking-wider uppercase font-sans shadow-sm ${styles[category]} ${rotation}`}
+      className={`inline-flex items-center rounded-full px-2.5 py-0.5 text-[10px] tracking-wider uppercase ${styles}`}
     >
       {label}
     </span>
   );
-}
+});
 
 /* ------------------------------------------------------------------ */
-/*  Spot card (feed entry)                                             */
+/*  Spot card (neumorphic)                                             */
 /* ------------------------------------------------------------------ */
-function SpotCard({
+const SpotCard = memo(function SpotCard({
   spot,
   onClick,
 }: {
   spot: FoodSpotLog;
   onClick: () => void;
+  index: number;
 }) {
   const date = new Date(spot.createdAt);
   const formatted = date.toLocaleDateString(undefined, {
@@ -185,15 +209,9 @@ function SpotCard({
     day: "numeric",
   });
 
-  const seed = spot.id ?? 0;
-  const rotation = (seed * 7) % 17 - 8;
-  const categoryColorClass = (spot.category ?? "Restaurant") === "Cafe"
-    ? "border-category-cafe text-category-cafe"
-    : "border-category-restaurant text-category-restaurant";
-
   return (
     <div
-      className="relative border-t-2 border-dashed border-text-secondary/30 border-x border-b border-text-secondary/15 bg-surface rounded-b-xl rounded-t-none shadow-sm transition-shadow hover:shadow-md h-full cursor-pointer flex flex-col"
+      className="neu-card overflow-hidden cursor-pointer flex flex-col h-full"
       onClick={onClick}
       role="button"
       tabIndex={0}
@@ -204,42 +222,44 @@ function SpotCard({
         }
       }}
     >
-      {/* Stamp rating badge */}
-      <div
-        style={{ transform: `rotate(${rotation}deg)` }}
-        className={`absolute -top-3 -right-3 z-10 flex h-11 w-11 items-center justify-center rounded-full border-2 bg-surface font-mono text-base font-bold shadow-md ${categoryColorClass}`}
-      >
-        {spot.rating}
-      </div>
-
       {/* Thumbnail */}
-      {spot.thumbnail && (
-        <div className="relative h-48 w-full overflow-hidden bg-bg rounded-t-none">
+      {spot.thumbnail ? (
+        <div className="relative h-44 w-full overflow-hidden">
           <img
             src={spot.thumbnail}
             alt={`Photo of ${spot.name}`}
             loading="lazy"
-            className="h-full w-full object-cover transition-transform duration-300 group-hover:scale-105"
+            decoding="async"
+            className="h-full w-full object-cover transition-transform duration-500 hover:scale-110"
           />
+          {/* Rating badge overlay */}
+          <div className="absolute top-3 right-3 flex h-10 w-10 items-center justify-center rounded-full bg-bg/90 shadow-neu-subtle font-mono text-sm font-bold text-gold backdrop-blur-sm">
+            {spot.rating}
+          </div>
+        </div>
+      ) : (
+        <div className="h-28 w-full bg-bg/40 flex items-center justify-center shadow-neu-inset relative">
+          <span className="text-3xl opacity-45">{spot.category === "Cafe" ? "☕" : "🍽️"}</span>
+          <div className="absolute top-3 right-3 flex h-9 w-9 items-center justify-center rounded-full bg-bg shadow-neu-subtle font-mono text-xs font-bold text-gold">
+            {spot.rating}
+          </div>
         </div>
       )}
 
       {/* Text content */}
-      <div className="p-4 md:p-5 pr-14 md:pr-14 flex-1 flex flex-col justify-between">
+      <div className="p-4 flex-1 flex flex-col justify-between">
         <div>
-          <div className="flex items-start justify-between gap-3">
-            <div className="min-w-0 flex-1">
-              <h3 className="truncate text-sm md:text-base font-sans font-semibold text-text-primary">
-                {spot.name}
-              </h3>
-              <div className="mt-1.5 flex flex-wrap items-center gap-2">
-                <p className="text-xs text-text-secondary font-mono">{formatted}</p>
-                <CategoryBadge category={spot.category ?? "Restaurant"} seed={seed} />
-              </div>
-            </div>
+          <h3 className="truncate text-sm md:text-base font-sans font-semibold text-text-primary mb-1">
+            {spot.name}
+          </h3>
+
+          <div className="flex flex-wrap items-center gap-2 mb-2">
+            <p className="text-[10px] text-text-secondary font-mono">{formatted}</p>
+            <CategoryBadge category={spot.category ?? "Restaurant"} />
           </div>
+
           {spot.comment && (
-            <p className="mt-2.5 text-sm leading-relaxed text-text-secondary">
+            <p className="text-xs sm:text-sm leading-relaxed text-text-secondary line-clamp-3">
               {spot.comment}
             </p>
           )}
@@ -247,12 +267,12 @@ function SpotCard({
       </div>
     </div>
   );
-}
+});
 
 /* ------------------------------------------------------------------ */
-/*  Pill button (reused for sort + category filter)                    */
+/*  Pill button (neumorphic)                                           */
 /* ------------------------------------------------------------------ */
-function PillButton({
+const PillButton = memo(function PillButton({
   label,
   active,
   onClick,
@@ -265,28 +285,191 @@ function PillButton({
     <button
       type="button"
       onClick={onClick}
-      className={`rounded-lg px-3.5 py-2.5 text-xs md:text-sm font-medium transition-all cursor-pointer whitespace-nowrap min-h-[44px] ${
-        active
-          ? "bg-accent text-white shadow-sm"
-          : "bg-surface text-text-secondary border border-text-secondary/15 hover:opacity-85 active:scale-95"
-      }`}
+      className={`rounded-xl px-4 py-2.5 text-xs md:text-sm font-medium transition-all duration-300 cursor-pointer whitespace-nowrap min-h-[40px] ${active
+          ? "shadow-neu-inset text-accent font-semibold"
+          : "shadow-neu-subtle text-text-secondary hover:text-text-primary active:shadow-neu-inset"
+        }`}
     >
       {label}
     </button>
   );
+});
+
+/* ------------------------------------------------------------------ */
+/*  User avatar/profile button                                         */
+/* ------------------------------------------------------------------ */
+function UserProfile({
+  photoURL,
+  displayName,
+  email,
+  onSignOut,
+}: {
+  photoURL: string | null;
+  displayName: string | null;
+  email: string | null;
+  onSignOut: () => void;
+}) {
+  const [open, setOpen] = useState(false);
+  const containerRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    if (!open) return;
+
+    function handleOutsideClick(event: MouseEvent | TouchEvent) {
+      if (containerRef.current && !containerRef.current.contains(event.target as Node)) {
+        setOpen(false);
+      }
+    }
+
+    document.addEventListener("mousedown", handleOutsideClick);
+    document.addEventListener("touchstart", handleOutsideClick);
+    return () => {
+      document.removeEventListener("mousedown", handleOutsideClick);
+      document.removeEventListener("touchstart", handleOutsideClick);
+    };
+  }, [open]);
+
+  return (
+    <div ref={containerRef} className="relative z-50">
+      <button
+        type="button"
+        onClick={() => setOpen((o: boolean) => !o)}
+        className="neu-button flex h-11 w-11 items-center justify-center rounded-full overflow-hidden cursor-pointer"
+      >
+        {photoURL ? (
+          <img src={photoURL} alt={displayName ?? "User"} className="h-full w-full object-cover" referrerPolicy="no-referrer" />
+        ) : (
+          <span className="text-sm font-bold text-accent">
+            {(displayName?.[0] ?? "U").toUpperCase()}
+          </span>
+        )}
+      </button>
+
+      {/* Dropdown */}
+      {open && (
+        <div className="absolute right-0 top-14 w-60 rounded-2xl p-4 bg-bg/95 backdrop-blur-md border border-text-secondary/10 shadow-neu-raised animate-page-enter z-50">
+          <div className="flex flex-col gap-0.5 px-1 pb-2">
+            <p className="truncate text-sm font-bold text-text-primary">
+              {displayName ?? "User"}
+            </p>
+            {email && (
+              <p className="truncate text-[11px] text-text-secondary/80 font-medium">
+                {email}
+              </p>
+            )}
+          </div>
+          <hr className="border-text-secondary/10 my-1" />
+          <button
+            type="button"
+            onClick={() => {
+              console.log("[KeepCheck UI] Sign-out button clicked!");
+              onSignOut();
+            }}
+            className="flex w-full items-center justify-center gap-2 rounded-xl border border-red-500/20 bg-red-500/10 px-4 py-2.5 text-sm font-semibold text-red-500 transition-all duration-300 hover:bg-red-500 hover:text-white hover:border-transparent active:scale-[0.97] cursor-pointer"
+          >
+            <LogOut className="h-4 w-4" />
+            <span>Sign out</span>
+          </button>
+        </div>
+      )}
+    </div>
+  );
 }
 
+/* ------------------------------------------------------------------ */
+/*  Activity Feed List Item (memoized)                                  */
+/* ------------------------------------------------------------------ */
+const FeedListItem = memo(function FeedListItem({
+  spot,
+  onSelect,
+  onDelete,
+}: {
+  spot: FoodSpotLog;
+  onSelect: () => void;
+  onDelete: () => void;
+}) {
+  return (
+    <div
+      onClick={onSelect}
+      className="feed-list-item neu-button p-4 flex items-center justify-between gap-3 text-sm cursor-pointer hover:bg-bg/85 relative transition-all"
+    >
+      <div className="min-w-0 flex-1 flex items-center gap-3.5">
+        <span className="text-2xl flex-shrink-0">{spot.category === "Cafe" ? "☕" : "🍽️"}</span>
+        <div className="min-w-0">
+          <p className="font-semibold text-text-primary truncate text-base">{spot.name}</p>
+          <div className="flex items-center gap-2.5 mt-1">
+            <span className="text-[10px] text-text-secondary/60 font-mono flex items-center gap-1">
+              <Clock className="h-3 w-3" />
+              {new Date(spot.createdAt).toLocaleDateString(undefined, { month: "short", day: "numeric" })}
+            </span>
+            <span className="text-text-secondary/20">•</span>
+            {spot.comment ? (
+              <p className="text-xs text-text-secondary truncate max-w-[200px] sm:max-w-xs md:max-w-md">
+                {spot.comment}
+              </p>
+            ) : (
+              <span className="text-xs text-text-secondary/40 italic">No notes</span>
+            )}
+          </div>
+        </div>
+      </div>
+
+      <div className="flex items-center gap-3.5 flex-shrink-0">
+        {/* Pending sync indicator in list view */}
+        {spot.pendingSync && (
+          <span className="pending-sync-pill" title="Pending sync">
+            <CloudOff className="h-3 w-3" />
+            <span className="hidden sm:inline">Offline</span>
+          </span>
+        )}
+        <span className="font-bold font-mono text-gold text-xs bg-bg/50 shadow-neu-inset px-2.5 py-1 rounded-full">
+          ★ {spot.rating}
+        </span>
+        <button
+          type="button"
+          onClick={(e) => {
+            e.stopPropagation();
+            onDelete();
+          }}
+          className="text-text-secondary/50 hover:text-red-500 transition-colors p-1"
+          aria-label="Delete log"
+        >
+          <Trash2 className="h-4 w-4" />
+        </button>
+      </div>
+    </div>
+  );
+});
+
 /* ------------------------------------------------------------------ */
 /*  Main page                                                          */
 /* ------------------------------------------------------------------ */
-export default function Home() {
+function HomePage() {
+  const { user, signOut, cachedSession } = useAuth();
+
+  // Effective UID: use real user's UID when available, fall back to cached session
+  const effectiveUid = user?.uid ?? cachedSession?.uid ?? null;
+
   const [name, setName] = useState("");
   const [category, setCategory] = useState<SpotCategory>("Restaurant");
   const [rating, setRating] = useState(7);
   const [comment, setComment] = useState("");
   const [imageFile, setImageFile] = useState<File | null>(null);
+  const [manualCoords, setManualCoords] = useState<{ latitude: number; longitude: number } | null>(null);
+  const [isLocationPickerOpen, setIsLocationPickerOpen] = useState(false);
+  const [gettingGps, setGettingGps] = useState(false);
   const [saving, setSaving] = useState(false);
+  const [success, setSuccess] = useState(false);
+  const [dragActive, setDragActive] = useState(false);
   const fileInputRef = useRef<HTMLInputElement>(null);
+  const [deletingIds, setDeletingIds] = useState<Set<number>>(new Set());
+
+  /* -- Online/offline state -- */
+  const [isOnline, setIsOnline] = useState(true);
+  const { showToast } = useToast();
+
+  /* -- Modal control state -- */
+  const [isFormOpen, setIsFormOpen] = useState(false);
 
   /* -- Detail modal -- */
   const [selectedSpotId, setSelectedSpotId] = useState<number | null>(null);
@@ -294,10 +477,61 @@ export default function Home() {
   /* -- Theme -- */
   const [dark, setDark] = useState(true);
 
+  /* -- Carousel control -- */
+  const carouselRef = useRef<HTMLDivElement>(null);
+  const [scrollPercent, setScrollPercent] = useState(0);
+
+  /* -- GSAP Animation Refs -- */
+  const modalContainerRef = useRef<HTMLDivElement>(null);
+  const modalContentRef = useRef<HTMLDivElement>(null);
+  const modalGooeyBgRef = useRef<HTMLDivElement>(null);
+  const backdropOverlayRef = useRef<HTMLDivElement>(null);
+  const hasAnimatedRef = useRef(false);
+
+  /* -- Search with debouncing -- */
+  const [searchInput, setSearchInput] = useState("");
+  const search = useDebouncedValue(searchInput, 150);
+
+  const [sortMode, setSortMode] = useState<SortMode>("newest");
+  const [catFilter, setCatFilter] = useState<CategoryFilter>("All");
+
+  /* -- Feed View Mode & Pagination state -- */
+  const [feedViewMode, setFeedViewMode] = useState<"list" | "grid">("list");
+  const [currentPage, setCurrentPage] = useState<number>(1);
+  const [pageSize, setPageSize] = useState<number>(5);
+
+  // Reset to page 1 whenever filters change
+  useEffect(() => {
+    setCurrentPage(1);
+  }, [catFilter, sortMode, search, pageSize]);
+
+  useEffect(() => {
+    // Read stored theme preference
+    try {
+      const stored = localStorage.getItem("keepcheck-theme");
+      if (stored) setDark(stored === "dark");
+    } catch { /* ignore */ }
+  }, []);
+
   useEffect(() => {
     document.documentElement.classList.toggle("dark", dark);
+    try {
+      localStorage.setItem("keepcheck-theme", dark ? "dark" : "light");
+    } catch { /* ignore */ }
   }, [dark]);
 
+  /* -- Prevent body scroll when form modal is open -- */
+  useEffect(() => {
+    if (isFormOpen) {
+      document.body.style.overflow = "hidden";
+    } else {
+      document.body.style.overflow = "";
+    }
+    return () => {
+      document.body.style.overflow = "";
+    };
+  }, [isFormOpen]);
+
   /* -- Storage persistence (best-effort) -- */
   useEffect(() => {
     if (navigator.storage?.persist) {
@@ -309,7 +543,7 @@ export default function Home() {
     }
   }, []);
 
-  /* -- Image preview object URL (raw file, NOT compressed) -- */
+  /* -- Image preview object URL -- */
   const [previewUrl, setPreviewUrl] = useState<string | null>(null);
 
   useEffect(() => {
@@ -322,15 +556,133 @@ export default function Home() {
     return () => URL.revokeObjectURL(url);
   }, [imageFile]);
 
-  /* -- Search, Sort & Category filter -- */
-  const [search, setSearch] = useState("");
-  const [sortMode, setSortMode] = useState<SortMode>("newest");
-  const [catFilter, setCatFilter] = useState<CategoryFilter>("All");
+  /* -- Firestore real-time sync (only when online and user is available) -- */
+  const syncSpots = useCallback(async (changes: FirestoreSpotChange[]) => {
+    if (!user) return;
 
-  // Reactive query – re-renders whenever `spots` table changes
-  const spots = useLiveQuery(() =>
-    db.spots.orderBy("createdAt").reverse().toArray()
-  );
+    const pendingDeletes = getPendingDeletes();
+
+    for (const change of changes) {
+      const fSpot = change.spot;
+
+      // 3. DELETE-RESURRECTION RACE CONDITION PATCH
+      // If a user deletes a spot while offline, and the app comes online, the Firestore
+      // snapshot listener might re-download the document before the pending delete
+      // queue processes it. Ignore incoming added/modified snapshots for flagged IDs.
+      const isPendingDelete = pendingDeletes.some(
+        (d) => d.uid === user.uid && d.firebaseId === fSpot.firebaseId
+      );
+      if (isPendingDelete) {
+        console.log(`[KeepCheck] Ignoring incoming snapshot for "${fSpot.name}" (${fSpot.firebaseId}) — pending local delete`);
+        continue;
+      }
+
+      if (change.type === "added" || change.type === "modified") {
+        const existing = await db.spots.where("firebaseId").equals(fSpot.firebaseId).first();
+        let localSpotId: number | undefined;
+
+        if (!existing) {
+          localSpotId = await db.spots.add({
+            name: fSpot.name,
+            category: fSpot.category ?? "Restaurant",
+            rating: fSpot.rating,
+            comment: fSpot.comment,
+            createdAt: fSpot.createdAt,
+            thumbnail: fSpot.thumbnail,
+            firebaseId: fSpot.firebaseId,
+            userId: user.uid,
+            pendingSync: false,
+            latitude: fSpot.latitude,
+            longitude: fSpot.longitude,
+          });
+        } else if (existing.id !== undefined) {
+          localSpotId = existing.id;
+          // Build an update payload with only the fields that actually changed
+          const updates: Partial<FoodSpotLog> = {};
+          if (existing.name !== fSpot.name) updates.name = fSpot.name;
+          if (existing.category !== (fSpot.category ?? "Restaurant")) updates.category = fSpot.category ?? "Restaurant";
+          if (existing.rating !== fSpot.rating) updates.rating = fSpot.rating;
+          if (existing.comment !== fSpot.comment) updates.comment = fSpot.comment;
+          if (existing.createdAt !== fSpot.createdAt) updates.createdAt = fSpot.createdAt;
+          if (existing.thumbnail !== fSpot.thumbnail) updates.thumbnail = fSpot.thumbnail;
+          if (existing.latitude !== fSpot.latitude) updates.latitude = fSpot.latitude;
+          if (existing.longitude !== fSpot.longitude) updates.longitude = fSpot.longitude;
+          if (existing.pendingSync) updates.pendingSync = false;
+
+          if (Object.keys(updates).length > 0) {
+            await db.spots.update(existing.id, updates);
+          }
+        }
+      } else if (change.type === "removed") {
+        const existing = await db.spots.where("firebaseId").equals(fSpot.firebaseId).first();
+        if (existing && existing.id !== undefined) {
+          await db.images.where("spotId").equals(existing.id).delete();
+          await db.spots.delete(existing.id);
+        }
+      }
+    }
+  }, [user]);
+
+  const syncImages = useCallback(async (firestoreImages: { firebaseId: string; spotFirebaseId: string; base64: string; createdAt: number }[]) => {
+    if (!user) return;
+
+    for (const fImg of firestoreImages) {
+      const spot = await db.spots.where("firebaseId").equals(fImg.spotFirebaseId).first();
+      if (!spot || spot.id === undefined) continue;
+
+      const existingImages = await db.images.where("spotId").equals(spot.id).toArray();
+      const alreadyHas = existingImages.some((img) => img.firebaseId === fImg.firebaseId);
+      if (alreadyHas) continue;
+
+      try {
+        const response = await fetch(fImg.base64);
+        const blob = await response.blob();
+        await db.images.add({
+          spotId: spot.id,
+          blob,
+          createdAt: fImg.createdAt,
+          firebaseId: fImg.firebaseId,
+        });
+        console.log(`[KeepCheck] Successfully downloaded and cached image for spot from base64: ${spot.name}`);
+      } catch (err) {
+        console.warn("[KeepCheck] Failed to sync image from Firestore:", err);
+      }
+    }
+  }, [user]);
+
+  // Only subscribe to Firestore when we have a real authenticated user
+  useEffect(() => {
+    if (!user) return;
+    const unsubSpots = subscribeToSpots(user.uid, syncSpots);
+    const unsubImages = subscribeToImages(user.uid, syncImages);
+    return () => {
+      unsubSpots();
+      unsubImages();
+    };
+  }, [user, syncSpots, syncImages]);
+
+  /* -- Offline sync listener -- */
+  useEffect(() => {
+    if (!user) return;
+
+    const cleanup = startOnlineListener(
+      user.uid,
+      (online) => setIsOnline(online),
+      (syncedCount) => {
+        if (syncedCount > 0) {
+          showToast(`✓ Synced ${syncedCount} offline log${syncedCount > 1 ? "s" : ""}`, "success");
+        }
+      },
+    );
+
+    return cleanup;
+  }, [user, showToast]);
+
+  // Reactive query — uses effectiveUid so data loads from Dexie even before Firebase auth resolves
+  const spots = useLiveQuery(() => {
+    if (!effectiveUid) return [];
+    return db.spots.where("userId").equals(effectiveUid).reverse().sortBy("createdAt");
+  }, [effectiveUid]);
 
   /** Derived: filtered + sorted view of spots. */
   const filteredSpots = useMemo(() => {
@@ -338,7 +690,6 @@ export default function Home() {
 
     const query = search.trim().toLowerCase();
 
-    // Filter by search text
     let result = spots;
     if (query) {
       result = result.filter(
@@ -348,35 +699,355 @@ export default function Home() {
       );
     }
 
-    // Filter by category
     if (catFilter !== "All") {
       result = result.filter(
         (s) => (s.category ?? "Restaurant") === catFilter
       );
     }
 
-    // Sort
     if (sortMode === "highest") {
       result = [...result].sort((a, b) => b.rating - a.rating);
     } else if (sortMode === "lowest") {
       result = [...result].sort((a, b) => a.rating - b.rating);
+    } else if (sortMode === "newest") {
+      result = [...result].sort((a, b) => b.createdAt - a.createdAt);
     }
-    // "newest" is the default order from the query (createdAt desc)
 
     return result;
   }, [spots, search, sortMode, catFilter]);
 
+  /* -- Pagination derived state -- */
+  const totalFilteredCount = filteredSpots?.length ?? 0;
+  const totalPages = Math.max(1, Math.ceil(totalFilteredCount / pageSize));
+
+  // Clamp current page if total pages decreases
+  useEffect(() => {
+    if (currentPage > totalPages) {
+      setCurrentPage(totalPages);
+    }
+  }, [currentPage, totalPages]);
+
+  const paginatedSpots = useMemo(() => {
+    if (!filteredSpots) return undefined;
+    const start = (currentPage - 1) * pageSize;
+    return filteredSpots.slice(start, start + pageSize);
+  }, [filteredSpots, currentPage, pageSize]);
+
+  const startItem = totalFilteredCount === 0 ? 0 : (currentPage - 1) * pageSize + 1;
+  const endItem = Math.min(totalFilteredCount, currentPage * pageSize);
+
+  /* -- Carousel scrolling listener -- */
+  const handleCarouselScroll = useCallback(() => {
+    if (carouselRef.current) {
+      const { scrollLeft, scrollWidth, clientWidth } = carouselRef.current;
+      const totalScrollable = scrollWidth - clientWidth;
+      if (totalScrollable > 0) {
+        setScrollPercent((scrollLeft / totalScrollable) * 100);
+      } else {
+        setScrollPercent(0);
+      }
+    }
+  }, []);
+
+  useEffect(() => {
+    const el = carouselRef.current;
+    if (el) {
+      el.addEventListener("scroll", handleCarouselScroll, { passive: true });
+      handleCarouselScroll();
+    }
+    return () => el?.removeEventListener("scroll", handleCarouselScroll);
+  }, [filteredSpots, handleCarouselScroll]);
+
+  const scrollCarousel = (direction: "left" | "right") => {
+    if (carouselRef.current) {
+      const scrollAmount = carouselRef.current.clientWidth * 0.75;
+      carouselRef.current.scrollBy({
+        left: direction === "left" ? -scrollAmount : scrollAmount,
+        behavior: "smooth",
+      });
+    }
+  };
+
+  /* ------------------------------------------------------------------ */
+  /*  GSAP Animation Implementation                                      */
+  /* ------------------------------------------------------------------ */
+
+  // 1. Page entrance animation timeline (Run once on mount when spots resolve)
+  useEffect(() => {
+    if (!effectiveUid || spots === undefined) return;
+
+    const headerEl = document.querySelector(".gsap-header");
+    const isAlreadyVisible = headerEl && window.getComputedStyle(headerEl).opacity === "1";
+    if (isAlreadyVisible && hasAnimatedRef.current) return;
+
+    hasAnimatedRef.current = true;
+
+    const ctx = gsap.context(() => {
+      const tl = gsap.timeline({ defaults: { ease: "power3.out" } });
+
+      if (document.querySelector(".gsap-header")) {
+        tl.fromTo(
+          ".gsap-header",
+          { y: -40, opacity: 0 },
+          { y: 0, opacity: 1, duration: 0.7 }
+        );
+      }
+      if (document.querySelector(".gsap-spotlight")) {
+        tl.fromTo(
+          ".gsap-spotlight",
+          { y: 35, opacity: 0 },
+          { y: 0, opacity: 1, duration: 0.8 },
+          "-=0.45"
+        );
+      }
+      if (document.querySelector(".gsap-feed-header")) {
+        tl.fromTo(
+          ".gsap-feed-header",
+          { y: 25, opacity: 0 },
+          { y: 0, opacity: 1, duration: 0.8 },
+          "-=0.55"
+        );
+      }
+      if (document.querySelector(".gsap-feed-filters")) {
+        tl.fromTo(
+          ".gsap-feed-filters",
+          { y: 20, opacity: 0 },
+          { y: 0, opacity: 1, duration: 0.8 },
+          "-=0.6"
+        );
+      }
+
+      // Stagger carousel cards
+      if (document.querySelectorAll(".carousel-card").length > 0) {
+        tl.fromTo(
+          ".carousel-card",
+          { scale: 0.92, opacity: 0, y: 15 },
+          { scale: 1, opacity: 1, y: 0, duration: 0.6, stagger: 0.07, ease: "back.out(1.15)" },
+          "-=0.4"
+        );
+      }
+    });
+
+    return () => ctx.revert();
+  }, [effectiveUid, spots]);
+
+  // 2. Modal Form slide in/out animations
+  const openFormModal = () => {
+    setIsFormOpen(true);
+  };
+
+  const closeFormModal = useCallback(() => {
+    if (modalContentRef.current && backdropOverlayRef.current && modalGooeyBgRef.current) {
+      const isMobile = window.innerWidth < 640;
+
+      const tl = gsap.timeline({
+        onComplete: () => {
+          setIsFormOpen(false);
+        }
+      });
+
+      tl.to(backdropOverlayRef.current, {
+        opacity: 0,
+        duration: 0.18,
+        ease: "power2.in"
+      })
+        .to(
+          modalContentRef.current,
+          {
+            opacity: 0,
+            y: isMobile ? 25 : 12,
+            duration: 0.15,
+            ease: "power2.in"
+          },
+          "-=0.15"
+        )
+        .to(
+          modalGooeyBgRef.current,
+          {
+            y: isMobile ? "100%" : 80,
+            scale: isMobile ? 0.85 : 0.75,
+            opacity: 0,
+            duration: 0.22,
+            ease: "power2.in"
+          },
+          "-=0.15"
+        );
+
+      // Fallback timer: guarantee modal is removed from DOM even if animation context is interrupted
+      setTimeout(() => {
+        setIsFormOpen(false);
+      }, 250);
+    } else {
+      setIsFormOpen(false);
+    }
+  }, []);
+
+  // Trigger GSAP entrance when form state flips to open
+  useEffect(() => {
+    if (isFormOpen && modalContentRef.current && backdropOverlayRef.current && modalGooeyBgRef.current) {
+      const isMobile = window.innerWidth < 640;
+
+      // Set initial values
+      gsap.set(backdropOverlayRef.current, { opacity: 0 });
+      gsap.set(modalContentRef.current, {
+        opacity: 0,
+        y: isMobile ? 25 : 15
+      });
+      gsap.set(modalGooeyBgRef.current, {
+        y: isMobile ? "100%" : 100,
+        scale: isMobile ? 0.8 : 0.7,
+        opacity: 0
+      });
+
+      const tl = gsap.timeline({ defaults: { ease: "power3.out" } });
+
+      tl.to(backdropOverlayRef.current, {
+        opacity: 1,
+        duration: 0.3
+      })
+        .to(
+          modalGooeyBgRef.current,
+          {
+            y: 0,
+            scale: 1,
+            opacity: 1,
+            duration: 0.55,
+            ease: isMobile ? "power3.out" : "back.out(1.3)"
+          },
+          "-=0.2"
+        )
+        .to(
+          modalContentRef.current,
+          {
+            opacity: 1,
+            y: 0,
+            duration: 0.35,
+            ease: "power2.out"
+          },
+          "-=0.25"
+        );
+    }
+  }, [isFormOpen]);
+
+  // 3. Elastic animations for FAB hover/clicks
+  const handleFABHover = (enter: boolean) => {
+    gsap.to(".gsap-fab", {
+      scale: enter ? 1.15 : 1,
+      rotation: enter ? 90 : 0,
+      duration: 0.5,
+      ease: "elastic.out(1, 0.4)",
+      overwrite: "auto"
+    });
+  };
+
+  const handleFABPress = (down: boolean) => {
+    gsap.to(".gsap-fab", {
+      scale: down ? 0.92 : 1.15,
+      duration: 0.25,
+      ease: "power2.out",
+      overwrite: "auto"
+    });
+  };
+
+  // Submit button success timeline
+  useEffect(() => {
+    if (success) {
+      gsap.fromTo(
+        ".gsap-success-tick",
+        { scale: 0.4, opacity: 0 },
+        { scale: 1, opacity: 1, duration: 0.5, ease: "elastic.out(1.1, 0.35)" }
+      );
+    }
+  }, [success]);
+
   /* ---------- handlers ---------- */
 
+  interface LocationCoords {
+    latitude?: number;
+    longitude?: number;
+  }
+
+  function getCoords(): Promise<LocationCoords> {
+    return new Promise((resolve) => {
+      console.log("[KeepCheck Geolocation] Attempting to capture current position (timeout: 5000ms)...");
+
+      if (typeof window === "undefined" || !navigator.geolocation) {
+        console.warn("[KeepCheck Geolocation] Geolocation is not supported by this browser or environment.");
+        resolve({});
+        return;
+      }
+
+      let resolved = false;
+      const timeoutId = setTimeout(() => {
+        if (!resolved) {
+          resolved = true;
+          console.warn("[KeepCheck Geolocation] Geolocation capture timed out after 5000ms.");
+          resolve({});
+        }
+      }, 5000);
+
+      navigator.geolocation.getCurrentPosition(
+        (position) => {
+          if (!resolved) {
+            clearTimeout(timeoutId);
+            resolved = true;
+            console.log(
+              `[KeepCheck Geolocation] Successfully captured position: lat=${position.coords.latitude}, lng=${position.coords.longitude} (accuracy: ${position.coords.accuracy}m)`
+            );
+            resolve({
+              latitude: position.coords.latitude,
+              longitude: position.coords.longitude,
+            });
+          }
+        },
+        (error) => {
+          if (!resolved) {
+            clearTimeout(timeoutId);
+            resolved = true;
+
+            let reason = "Unknown error";
+            if (error.code === error.PERMISSION_DENIED) {
+              reason = "Permission denied by user";
+            } else if (error.code === error.POSITION_UNAVAILABLE) {
+              reason = "Position unavailable";
+            } else if (error.code === error.TIMEOUT) {
+              reason = "Timeout";
+            }
+            console.warn(
+              `[KeepCheck Geolocation] Geolocation capture failed: ${reason} (code: ${error.code}, message: ${error.message})`
+            );
+            resolve({});
+          }
+        },
+        {
+          enableHighAccuracy: false,
+          timeout: 5000,
+          maximumAge: 0,
+        }
+      );
+    });
+  }
+
+  const handleCaptureCurrentGPS = async () => {
+    setGettingGps(true);
+    const res = await getCoords();
+    setGettingGps(false);
+    if (res.latitude !== undefined && res.longitude !== undefined) {
+      setManualCoords({ latitude: res.latitude, longitude: res.longitude });
+      showToast("📍 Location set to current GPS position", "info");
+    } else {
+      showToast("Could not detect GPS position. Pin manually on map!", "error");
+    }
+  };
+
   async function handleSubmit(e: FormEvent) {
     e.preventDefault();
     const trimmed = name.trim();
-    if (!trimmed) return;
+    if (!trimmed || !user) return;
 
     setSaving(true);
 
     try {
-      // Compress image in parallel (if present) before opening the txn.
       let thumbnail: string | undefined;
       let compressedBlob: Blob | undefined;
 
@@ -388,359 +1059,917 @@ export default function Home() {
           ]);
         } catch (imgErr) {
           console.error("[KeepCheck] Image processing failed:", imgErr);
-          alert(
-            "Could not process this image format. Try taking a JPEG photo instead.",
-          );
+          showToast("Could not process this image format. Try taking a standard JPEG photo.", "error");
           setSaving(false);
           return;
         }
       }
 
-      // Dual-write transaction — keeps `spots` and `images` in sync.
-      await db.transaction("rw", db.spots, db.images, async () => {
-        const spotId = await db.spots.add({
-          name: trimmed,
-          category,
-          rating,
-          comment: comment.trim(),
-          createdAt: Date.now(),
-          thumbnail,
+      let coords: LocationCoords = {};
+      if (manualCoords?.latitude !== undefined && manualCoords?.longitude !== undefined) {
+        coords = { latitude: manualCoords.latitude, longitude: manualCoords.longitude };
+        console.log(
+          `[KeepCheck] Using manually pinned location: lat=${coords.latitude}, lng=${coords.longitude}`
+        );
+      } else {
+        try {
+          coords = await getCoords();
+        } catch (e) {
+          console.error("[KeepCheck] Geolocation retrieval failed:", e);
+        }
+      }
+
+      const spotData = {
+        name: trimmed,
+        category,
+        rating,
+        comment: comment.trim(),
+        createdAt: Date.now(),
+        thumbnail,
+        latitude: coords.latitude,
+        longitude: coords.longitude,
+      };
+
+      const firebaseId = generateSpotId(user.uid);
+
+      // ---- 1. ALWAYS save locally first (instant, works offline) ----
+      const spotId = await db.transaction("rw", db.spots, db.images, async () => {
+        const localId = await db.spots.add({
+          ...spotData,
+          firebaseId,
+          userId: user.uid,
+          pendingSync: true, // Assume pending until Firestore write succeeds
         });
 
         if (compressedBlob) {
           await db.images.add({
-            spotId,
+            spotId: localId,
             blob: compressedBlob,
             createdAt: Date.now(),
           });
         }
+
+        return localId;
       });
 
-      // Reset form
+      console.log(`[KeepCheck] Spot saved locally (id: ${spotId}, firebase: ${firebaseId})`);
+
+      // ---- 2. Attempt Firestore write directly (works offline via persistentLocalCache) ----
+      try {
+        await writeSpotToFirestore(user.uid, firebaseId, spotData);
+
+        // Upload image as base64 to Firestore (non-blocking, best-effort)
+        if (compressedBlob) {
+          try {
+            const base64 = await compressBlobToSafeBase64(compressedBlob);
+            if (base64) {
+              const imgFirebaseId = await addImageToFirestore(user.uid, {
+                spotFirebaseId: firebaseId,
+                base64,
+                createdAt: Date.now(),
+              });
+              // Mark image as synced locally
+              const localImg = await db.images.where("spotId").equals(spotId).first();
+              if (localImg && localImg.id !== undefined) {
+                await db.images.update(localImg.id, { firebaseId: imgFirebaseId });
+              }
+            } else {
+              console.warn("[KeepCheck] compressBlobToSafeBase64 returned null (too large). Skipping image Firestore upload, keeping only local photo.");
+            }
+          } catch (imgUploadErr) {
+            console.warn("[KeepCheck] Image sync to Firestore failed (will retry on sync sweep):", imgUploadErr);
+          }
+        }
+
+        // Firestore write succeeded (or queued by local cache) — clear pendingSync
+        await db.spots.update(spotId, { pendingSync: false });
+        console.log(`[KeepCheck] Spot synced to Firestore (${firebaseId})`);
+      } catch (firestoreErr) {
+        // Firestore write failed — pendingSync stays true, will retry when online
+        console.warn("[KeepCheck] Firestore write failed — queued for sync when online:", firestoreErr);
+      }
+
+      // ---- 3. Close modal immediately & show sleek toast notification ----
+      closeFormModal();
+      showToast(`🎉 "${trimmed}" logged successfully!`, "success", category === "Cafe" ? "☕" : "🍽️");
+
+      // Reset form fields
       setName("");
       setCategory("Restaurant");
       setRating(7);
       setComment("");
       setImageFile(null);
+      setManualCoords(null);
       if (fileInputRef.current) fileInputRef.current.value = "";
     } catch (err: unknown) {
-      // Handle quota exceeded (phone out of disk space).
       if (
         err instanceof DOMException &&
         err.name === "QuotaExceededError"
       ) {
-        alert(
-          "Your device is out of storage space. Free some space and try again.",
-        );
+        showToast("Your device is out of storage space. Free space and try again.", "error");
       } else {
         console.error("[KeepCheck] Save failed:", err);
-        alert("Something went wrong while saving. Please try again.");
+        showToast("Something went wrong while saving spot. Please try again.", "error");
       }
     } finally {
       setSaving(false);
     }
   }
 
-  async function handleExport() {
-    const allSpots = await db.spots.toArray();
-    const json = JSON.stringify(allSpots, null, 2);
-    const blob = new Blob([json], { type: "application/json" });
-    const url = URL.createObjectURL(blob);
-
-    const a = document.createElement("a");
-    a.href = url;
-    a.download = "keepcheck-spots-backup.json";
-    a.click();
-
-    URL.revokeObjectURL(url);
-  }
-
-  /** Cascade delete: remove associated images THEN the spot record. */
   async function deleteEntry(id: number) {
     try {
+      setDeletingIds((prev: Set<number>) => new Set<number>(prev).add(id));
+      const spot = await db.spots.get(id);
+
+      await new Promise((resolve) => setTimeout(resolve, 400));
+
+      // Delete locally first (always works)
       await db.transaction("rw", db.spots, db.images, async () => {
         await db.images.where("spotId").equals(id).delete();
         await db.spots.delete(id);
       });
+
+      // Attempt Firestore delete (non-blocking)
+      if (spot?.firebaseId && user) {
+        try {
+          await deleteImagesForSpotFromFirestore(user.uid, spot.firebaseId);
+          await deleteSpotFromFirestore(user.uid, spot.firebaseId);
+        } catch (fireErr) {
+          console.warn("[KeepCheck] Firestore delete failed — queued for retry when online:", fireErr);
+          // Queue for retry when back online
+          queuePendingDelete(user.uid, spot.firebaseId);
+        }
+      }
+
+      showToast(`🗑️ Spot deleted`, "delete");
+
+      setDeletingIds((prev: Set<number>) => {
+        const next = new Set<number>(prev);
+        next.delete(id);
+        return next;
+      });
     } catch (error) {
       console.error("Failed to delete entry:", error);
-      alert("Could not delete the entry. Please try again.");
+      showToast("Failed to delete entry", "error");
+      setDeletingIds((prev: Set<number>) => {
+        const next = new Set<number>(prev);
+        next.delete(id);
+        return next;
+      });
     }
   }
 
+  // Memoized profile props for UserProfile to avoid re-creating on every render
+  const profilePhotoURL = user?.photoURL ?? cachedSession?.photoURL ?? null;
+  const profileDisplayName = user?.displayName ?? cachedSession?.displayName ?? null;
+  const profileEmail = user?.email ?? cachedSession?.email ?? null;
+
   /* ---------- render ---------- */
 
   return (
-    <div className="mx-auto flex min-h-dvh w-full max-w-screen-lg flex-col px-4 sm:px-6 lg:px-8 py-6 sm:py-10 lg:py-16">
-      {/* ---- Header ---- */}
-      <header className="relative mb-6 sm:mb-8 text-center">
-        {/* Theme toggle — top-right */}
-        <div className="absolute right-0 top-0">
-          <ThemeToggle dark={dark} onToggle={() => setDark((d) => !d)} />
-        </div>
+    <div className="relative mx-auto flex min-h-dvh w-full max-w-screen-lg flex-col px-4 sm:px-6 lg:px-8 py-6 sm:py-10">
+      {/* ---- SVG Gooey filters ---- */}
+      <svg className="absolute h-0 w-0" aria-hidden="true">
+        <defs>
+          <filter id="gooey-bg">
+            <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur" />
+            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="gooey" />
+            <feComposite in="SourceGraphic" in2="gooey" operator="atop" />
+          </filter>
+          <filter id="gooey-medium">
+            <feGaussianBlur in="SourceGraphic" stdDeviation="6" result="blur" />
+            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -8" result="gooey" />
+            <feComposite in="SourceGraphic" in2="gooey" operator="atop" />
+          </filter>
+          <filter id="gooey-rating">
+            <feGaussianBlur in="SourceGraphic" stdDeviation="4" result="blur" />
+            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 16 -6" result="goo" />
+            <feComposite in="SourceGraphic" in2="goo" operator="atop" />
+          </filter>
+        </defs>
+      </svg>
 
-        <h1 className="text-2xl sm:text-3xl lg:text-4xl font-serif font-bold tracking-tight text-text-primary">
-          Keep<span className="text-accent">Check</span>
-        </h1>
-        <p className="mt-1 text-sm sm:text-base text-text-secondary">
-          Track &amp; rate every café and restaurant.
-        </p>
-      </header>
-
-      {/* ---- Form ---- */}
-      <form
-        onSubmit={handleSubmit}
-        className="mx-auto w-full max-w-lg mb-8 sm:mb-10 rounded-2xl border border-text-secondary/15 bg-surface p-4 sm:p-5 shadow-sm"
-      >
-        {/* Name */}
-        <label
-          htmlFor="spot-name"
-          className="mb-1.5 block text-xs font-medium uppercase tracking-wider text-text-secondary"
-        >
-          Business / Spot Name
-        </label>
-        <input
-          id="spot-name"
-          type="text"
-          required
-          value={name}
-          onChange={(e) => setName(e.target.value)}
-          placeholder="e.g. Starbucks, Samgyupsal…"
-          className="mb-5 w-full rounded-lg border border-text-secondary/20 bg-bg px-3 py-3 text-sm sm:text-base text-text-primary outline-none transition-colors placeholder:text-text-secondary/40 focus:border-accent focus:ring-1 focus:ring-accent"
-        />
+      {/* ---- Background blobs (GPU-contained) ---- */}
+      <div className="pointer-events-none fixed inset-0 overflow-hidden opacity-40 blob-container" style={{ filter: "url(#gooey-bg)" }}>
+        <div className="animate-blob-1 absolute -top-32 -left-32 h-80 w-80 rounded-full bg-accent/10" />
+        <div className="animate-blob-2 absolute -bottom-40 -right-24 h-96 w-96 rounded-full bg-category-cafe/10" />
+        <div className="animate-blob-3 absolute top-1/2 left-1/3 h-56 w-56 rounded-full bg-category-restaurant/10" />
+      </div>
 
-        {/* Category */}
-        <p className="mb-2 text-xs font-medium uppercase tracking-wider text-text-secondary">
-          Category
-        </p>
-        <div className="mb-5">
-          <CategoryPills value={category} onChange={setCategory} />
+      {/* ---- Offline Banner ---- */}
+      {!isOnline && (
+        <div className="offline-banner fixed top-0 left-0 right-0 z-[100] flex items-center justify-center gap-2 px-4 py-2.5 text-xs sm:text-sm font-semibold">
+          <WifiOff className="h-4 w-4 animate-pulse" />
+          <span>You&apos;re offline — logs are saved locally and will sync when reconnected</span>
         </div>
+      )}
 
-        {/* Rating */}
-        <p className="mb-2 text-xs font-medium uppercase tracking-wider text-text-secondary">
-          Rating&ensp;
-          <span className="normal-case tracking-normal text-text-secondary/60">
-            ({rating} / 10)
-          </span>
-        </p>
-        <div className="mb-5">
-          <RatingPills value={rating} onChange={setRating} />
-        </div>
 
-        {/* Comment */}
-        <label
-          htmlFor="spot-comment"
-          className="mb-1.5 block text-xs font-medium uppercase tracking-wider text-text-secondary"
-        >
-          Comment
-        </label>
-        <textarea
-          id="spot-comment"
-          rows={3}
-          value={comment}
-          onChange={(e) => setComment(e.target.value)}
-          placeholder="Notes about the food, drink, vibe, or service…"
-          className="mb-5 w-full resize-none rounded-lg border border-text-secondary/20 bg-bg px-3 py-3 text-sm sm:text-base text-text-primary outline-none transition-colors placeholder:text-text-secondary/40 focus:border-accent focus:ring-1 focus:ring-accent"
-        />
 
-        {/* Photo upload */}
-        <p className="mb-2 text-xs font-medium uppercase tracking-wider text-text-secondary">
-          Photo{" "}
-          <span className="normal-case tracking-normal text-text-secondary/60">
-            (optional)
-          </span>
-        </p>
+      {/* ---- Header ---- */}
+      <header className={`relative z-40 mb-6 sm:mb-8 gsap-header gsap-reveal ${!isOnline ? 'mt-10' : ''}`}>
+        <div className="flex items-center justify-between">
+          <div>
+            <h1 className="text-2xl sm:text-3xl lg:text-4xl font-serif font-bold tracking-tight text-text-primary">
+              Keep<span className="text-category-cafe">Check</span>
+            </h1>
+            <p className="mt-1 text-sm sm:text-base text-text-secondary">
+              Track &amp; rate every café and restaurant.
+            </p>
+          </div>
 
-        <div className="mb-5">
-          {/* Custom file button */}
-          <label
-            htmlFor="spot-photo"
-            className="inline-flex items-center gap-2 rounded-lg border border-text-secondary/20 bg-bg px-4 py-3 text-sm font-medium text-text-secondary transition-all hover:opacity-85 cursor-pointer min-h-[44px]"
-          >
-            <Camera className="h-4 w-4" />
-            {imageFile ? "Change Photo" : "Take or Choose Photo"}
-          </label>
-          <input
-            ref={fileInputRef}
-            id="spot-photo"
-            type="file"
-            accept="image/*"
-            onChange={(e) => setImageFile(e.target.files?.[0] ?? null)}
-            className="sr-only"
-          />
+          <div className="flex items-center gap-2.5">
+            <Link
+              href="/map"
+              aria-label="View Map"
+              className="neu-button flex h-11 w-11 items-center justify-center rounded-full text-text-secondary cursor-pointer"
+            >
+              <MapPin className="h-5 w-5" />
+            </Link>
+            <ThemeToggle dark={dark} onToggle={() => setDark((d: boolean) => !d)} />
 
-          {/* Preview strip — uses raw object URL, NOT makeThumbnail() */}
-          {previewUrl && (
-            <div className="relative mt-3 inline-block">
-              <img
-                src={previewUrl}
-                alt="Selected photo preview"
-                className="h-24 w-24 rounded-lg object-cover border border-text-secondary/20"
-              />
+            {/* Desktop Add Spot button */}
+            {effectiveUid && (
               <button
                 type="button"
-                onClick={() => {
-                  setImageFile(null);
-                  if (fileInputRef.current) fileInputRef.current.value = "";
-                }}
-                className="absolute -right-2 -top-2 flex h-6 w-6 items-center justify-center rounded-full bg-accent text-white text-xs shadow-md hover:opacity-90 transition-colors cursor-pointer"
-                aria-label="Remove photo"
+                onClick={openFormModal}
+                className="hidden md:inline-flex items-center gap-1.5 rounded-xl px-4 py-2.5 text-xs sm:text-sm font-bold bg-gold text-[#4E342E] shadow-neu-button hover:bg-gold/90 active:scale-95 transition-all cursor-pointer"
               >
-                ✕
+                <Plus className="h-4 w-4" />
+                Add Spot
               </button>
-            </div>
-          )}
+            )}
+
+            {effectiveUid && (
+              <UserProfile
+                photoURL={profilePhotoURL}
+                displayName={profileDisplayName}
+                email={profileEmail}
+                onSignOut={signOut}
+              />
+            )}
+          </div>
         </div>
+      </header>
 
-        {/* Submit */}
-        <button
-          type="submit"
-          disabled={saving || !name.trim()}
-          className="w-full rounded-lg bg-accent py-3 text-sm sm:text-base font-semibold text-white transition-opacity hover:opacity-90 active:opacity-80 disabled:opacity-40 cursor-pointer min-h-[44px]"
-        >
-          {saving ? "Saving…" : "Log Spot"}
-        </button>
-      </form>
-
-      {/* ---- Feed ---- */}
-      <section className="flex flex-1 flex-col">
-        {/* Title + Export */}
-        <div className="mb-4 flex items-center justify-between gap-3">
-          <h2 className="text-base sm:text-lg font-serif font-semibold text-text-primary">
-            Your Logs
-            {spots && spots.length > 0 && (
-              <span className="ml-2 text-sm font-mono font-normal text-text-secondary">
-                ({filteredSpots ? filteredSpots.length : spots.length})
+      {/* ---- Spotlight Carousel ---- */}
+      <section className="relative w-full mb-8 sm:mb-12 gsap-spotlight gsap-reveal">
+        <div className="flex items-center justify-between mb-4">
+          <h2 className="text-base sm:text-lg font-serif font-semibold text-text-primary flex items-center gap-2">
+            <span>✨ Spotlight Logs</span>
+            {filteredSpots && filteredSpots.length > 0 && (
+              <span className="text-xs font-mono font-normal text-text-secondary/60">
+                ({filteredSpots.length} items)
               </span>
             )}
           </h2>
 
-          {spots && spots.length > 0 && (
-            <button
-              type="button"
-              onClick={handleExport}
-              className="rounded-lg border border-text-secondary/20 bg-surface px-3.5 py-2.5 text-xs sm:text-sm font-medium text-text-secondary transition-all hover:bg-bg active:scale-95 cursor-pointer min-h-[44px]"
-            >
-              Export Backup
-            </button>
-          )}
+          <div className="flex items-center gap-2">
+            {spots && spots.length > 0 && (
+              <>
+                <button
+                  type="button"
+                  onClick={() => scrollCarousel("left")}
+                  className="neu-button flex h-9 w-9 items-center justify-center rounded-full text-text-secondary cursor-pointer hover:text-accent"
+                  aria-label="Scroll left"
+                >
+                  <ChevronLeft className="h-4 w-4" />
+                </button>
+                <button
+                  type="button"
+                  onClick={() => scrollCarousel("right")}
+                  className="neu-button flex h-9 w-9 items-center justify-center rounded-full text-text-secondary cursor-pointer hover:text-accent"
+                  aria-label="Scroll right"
+                >
+                  <ChevronRight className="h-4 w-4" />
+                </button>
+              </>
+            )}
+          </div>
         </div>
 
-        {/* ---- Control bar: Search + Category + Sort ---- */}
-        {spots && spots.length > 0 && (
-          <div className="mb-4 sm:mb-5 flex flex-col gap-3">
-            {/* Search */}
-            <div className="relative">
-              <svg
-                className="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-text-secondary/50"
-                xmlns="http://www.w3.org/2000/svg"
-                viewBox="0 0 24 24"
-                fill="none"
-                stroke="currentColor"
-                strokeWidth="2"
-                strokeLinecap="round"
-                strokeLinejoin="round"
+        {/* Carousel Window */}
+        <div className="relative group rounded-3xl p-1 bg-transparent">
+          {spots === undefined ? (
+            <div className="py-20 text-center text-sm font-mono text-text-secondary animate-pulse neu-raised">Loading spots…</div>
+          ) : spots.length === 0 ? (
+            <div className="py-16 text-center neu-raised bg-bg/40 border border-dashed border-text-secondary/25">
+              <div className="neu-raised bg-bg inline-flex h-20 w-20 items-center justify-center rounded-3xl mx-auto mb-4">
+                <span className="text-3xl">☕</span>
+              </div>
+              <p className="text-sm text-text-secondary font-medium">
+                No spots logged yet — add your first cafe or restaurant to get started!
+              </p>
+            </div>
+          ) : filteredSpots && filteredSpots.length === 0 ? (
+            <div className="py-16 text-center neu-raised">
+              <p className="text-sm text-text-secondary">No spots match your current filters.</p>
+            </div>
+          ) : (
+            <div className="carousel-mask overflow-hidden rounded-3xl">
+              <div
+                ref={carouselRef}
+                className="carousel-container gap-6 py-6 px-4 scrollbar-none"
               >
-                <circle cx="11" cy="11" r="8" />
-                <path d="m21 21-4.3-4.3" />
-              </svg>
-              <input
-                id="search-logs"
-                type="text"
-                value={search}
-                onChange={(e) => setSearch(e.target.value)}
-                placeholder="Search spots or comments…"
-                className="w-full rounded-lg border border-text-secondary/20 bg-surface py-3 pl-10 pr-3 text-sm sm:text-base text-text-primary outline-none transition-colors placeholder:text-text-secondary/40 focus:border-accent focus:ring-1 focus:ring-accent min-h-[44px]"
-              />
+                {filteredSpots && (filteredSpots as FoodSpotLog[]).map((spot: FoodSpotLog, index: number) => (
+                  <div
+                    key={spot.id}
+                    className={`carousel-card group/item relative shrink-0 transition-transform duration-300 ${deletingIds.has(spot.id!) ? "animate-melt" : ""}`}
+                  >
+                    <SpotCard
+                      spot={spot}
+                      index={index}
+                      onClick={() => spot.id !== undefined && setSelectedSpotId(spot.id)}
+                    />
+                    {/* Pending sync badge */}
+                    {spot.pendingSync && (
+                      <div className="pending-sync-badge" title="Waiting to sync to cloud">
+                        <CloudOff className="h-3 w-3" />
+                      </div>
+                    )}
+                    <button
+                      type="button"
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        spot.id !== undefined && deleteEntry(spot.id);
+                      }}
+                      className="absolute right-4 bottom-4 neu-button inline-flex h-9 w-9 items-center justify-center rounded-full text-text-secondary/70 opacity-0 group-hover/item:opacity-100 transition-opacity duration-300 hover:text-red-500 active:shadow-neu-inset cursor-pointer z-10 bg-bg"
+                      aria-label="Delete entry"
+                    >
+                      <Trash2 className="h-4 w-4" />
+                    </button>
+                  </div>
+                ))}
+              </div>
             </div>
+          )}
+        </div>
 
-            {/* Category filter + Sort buttons — scrollable row on mobile */}
-            <div className="flex items-center gap-1.5 overflow-x-auto pb-1 -mb-1 scrollbar-none">
-              {/* Category filter */}
-              <PillButton
-                label="All"
-                active={catFilter === "All"}
-                onClick={() => setCatFilter("All")}
-              />
-              <PillButton
-                label="☕ Cafe"
-                active={catFilter === "Cafe"}
-                onClick={() => setCatFilter("Cafe")}
-              />
-              <PillButton
-                label="🍽️ Restaurant"
-                active={catFilter === "Restaurant"}
-                onClick={() => setCatFilter("Restaurant")}
-              />
-
-              {/* Divider */}
-              <div className="mx-1 h-5 w-px shrink-0 bg-text-secondary/20" />
-
-              {/* Sort */}
-              <PillButton
-                label="Newest"
-                active={sortMode === "newest"}
-                onClick={() => setSortMode("newest")}
-              />
-              <PillButton
-                label="Highest"
-                active={sortMode === "highest"}
-                onClick={() => setSortMode("highest")}
-              />
-              <PillButton
-                label="Lowest"
-                active={sortMode === "lowest"}
-                onClick={() => setSortMode("lowest")}
+        {/* Scroll Progress line indicator */}
+        {filteredSpots && filteredSpots.length > 1 && (
+          <div className="mt-4 flex items-center justify-center gap-3">
+            <span className="text-[9px] font-mono text-text-secondary/50 uppercase tracking-wider">START</span>
+            <div className="h-1.5 w-32 rounded-full shadow-neu-inset bg-bg/50 relative overflow-hidden">
+              <div
+                className="absolute top-0 bottom-0 bg-accent rounded-full transition-all duration-100"
+                style={{
+                  left: "0",
+                  width: "20px",
+                  transform: `translateX(calc(${scrollPercent} * (128px - 20px) / 100))`,
+                }}
               />
             </div>
+            <span className="text-[9px] font-mono text-text-secondary/50 uppercase tracking-wider">END</span>
           </div>
         )}
+      </section>
 
-        {/* ---- Feed content ---- */}
-        {spots === undefined && (
-          <p className="py-12 text-center text-sm font-mono text-text-secondary animate-pulse">Loading…</p>
-        )}
+      {/* ---- Bottom Section: Activity Feed & Logs ---- */}
+      <section className="w-full mb-16">
 
-        {spots && spots.length === 0 && (
-          <p className="py-12 text-center text-sm text-text-secondary">
-            No spots logged yet — add your first one above!
-          </p>
-        )}
+        {/* Activity feed controls header */}
+        <div className="flex flex-wrap items-center justify-between gap-3 mb-4 gsap-feed-header gsap-reveal">
+          <div className="flex items-center gap-2.5">
+            <h2 className="text-base sm:text-lg font-serif font-semibold text-text-primary">
+              Activity Feed
+            </h2>
+            {totalFilteredCount > 0 && (
+              <span className="text-xs font-mono font-normal text-text-secondary/70 bg-bg/50 px-2.5 py-0.5 rounded-full shadow-neu-inset">
+                {totalFilteredCount} {totalFilteredCount === 1 ? "entry" : "entries"}
+              </span>
+            )}
+          </div>
 
-        {filteredSpots && filteredSpots.length === 0 && spots && spots.length > 0 && (
-          <p className="py-12 text-center text-sm text-text-secondary">
-            No logs match your current filters.
-          </p>
-        )}
+          {/* Controls: View mode switcher & Page size selector */}
+          {totalFilteredCount > 0 && (
+            <div className="flex items-center gap-3">
+              {/* Page Size selector */}
+              <div className="flex items-center gap-1.5 text-xs text-text-secondary">
+                <span className="hidden sm:inline font-medium">Show:</span>
+                <div className="flex items-center gap-1 bg-bg/50 p-1 rounded-xl shadow-neu-inset">
+                  {[5, 10, 20].map((size) => (
+                    <button
+                      key={size}
+                      type="button"
+                      onClick={() => setPageSize(size)}
+                      className={`px-2 py-0.5 rounded-lg text-xs font-mono font-bold transition-all cursor-pointer ${pageSize === size
+                          ? "bg-accent text-[#4E342E] shadow-neu-subtle font-extrabold"
+                          : "text-text-secondary hover:text-text-primary"
+                        }`}
+                    >
+                      {size}
+                    </button>
+                  ))}
+                </div>
+              </div>
 
-        {filteredSpots && filteredSpots.length > 0 && (
-          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-5 sm:gap-6 pb-6 pt-3">
-            {filteredSpots.map((spot) => (
-              <div key={spot.id} className="group relative">
-                <SpotCard
-                  spot={spot}
-                  onClick={() =>
-                    spot.id !== undefined && setSelectedSpotId(spot.id)
-                  }
-                />
+              {/* View Mode Toggle */}
+              <div className="flex items-center gap-1 bg-bg/50 p-1 rounded-xl shadow-neu-inset">
                 <button
                   type="button"
-                  onClick={(e) => {
-                    e.stopPropagation();
-                    spot.id !== undefined && deleteEntry(spot.id);
-                  }}
-                  className="absolute right-3 bottom-3 inline-flex h-9 w-9 items-center justify-center rounded-full bg-surface border border-text-secondary/15 text-text-secondary/70 opacity-60 transition-all hover:opacity-100 hover:bg-red-50 hover:text-red-600 active:scale-95 active:opacity-100 active:bg-red-100 dark:bg-surface dark:text-text-secondary/70 dark:hover:bg-red-950/30 dark:hover:text-red-400 cursor-pointer backdrop-blur-sm shadow-sm z-10"
-                  aria-label="Delete entry"
+                  onClick={() => setFeedViewMode("list")}
+                  className={`p-1.5 rounded-lg transition-all cursor-pointer ${feedViewMode === "list"
+                      ? "bg-accent text-[#4E342E] shadow-neu-subtle font-bold"
+                      : "text-text-secondary hover:text-text-primary"
+                    }`}
+                  title="Compact List View"
+                  aria-label="List view"
+                >
+                  <LayoutList className="h-4 w-4" />
+                </button>
+                <button
+                  type="button"
+                  onClick={() => setFeedViewMode("grid")}
+                  className={`p-1.5 rounded-lg transition-all cursor-pointer ${feedViewMode === "grid"
+                      ? "bg-accent text-[#4E342E] shadow-neu-subtle font-bold"
+                      : "text-text-secondary hover:text-text-primary"
+                    }`}
+                  title="Grid Cards View"
+                  aria-label="Grid view"
                 >
-                  <Trash2 className="h-4 w-4" />
+                  <LayoutGrid className="h-4 w-4" />
                 </button>
               </div>
-            ))}
+            </div>
+          )}
+        </div>
+
+        {spots && spots.length > 0 ? (
+          <div className="space-y-5">
+            {/* Filter controls row */}
+            <div className="neu-raised p-4 sm:p-5 flex flex-col md:flex-row gap-4 items-stretch md:items-center justify-between gsap-feed-filters gsap-reveal">
+              {/* Search */}
+              <div className="relative flex-1">
+                <svg
+                  className="pointer-events-none absolute left-4 top-1/2 h-4 w-4 -translate-y-1/2 text-text-secondary/50"
+                  xmlns="http://www.w3.org/2000/svg"
+                  viewBox="0 0 24 24"
+                  fill="none"
+                  stroke="currentColor"
+                  strokeWidth="2"
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                >
+                  <circle cx="11" cy="11" r="8" />
+                  <path d="m21 21-4.3-4.3" />
+                </svg>
+                <input
+                  id="search-logs"
+                  type="text"
+                  value={searchInput}
+                  onChange={(e) => setSearchInput(e.target.value)}
+                  placeholder="Search spots by name or notes…"
+                  className="neu-input w-full pl-11 pr-4"
+                />
+                {searchInput && (
+                  <button
+                    type="button"
+                    onClick={() => setSearchInput("")}
+                    className="absolute right-3.5 top-1/2 -translate-y-1/2 text-xs text-text-secondary/60 hover:text-accent font-bold p-1 cursor-pointer"
+                  >
+                    ✕
+                  </button>
+                )}
+              </div>
+
+              {/* Filters */}
+              <div className="flex items-center gap-2 overflow-x-auto pb-1 md:pb-0 scrollbar-none">
+                <PillButton label="All" active={catFilter === "All"} onClick={() => setCatFilter("All")} />
+                <PillButton label="☕ Cafe" active={catFilter === "Cafe"} onClick={() => setCatFilter("Cafe")} />
+                <PillButton label="🍽️ Restaurant" active={catFilter === "Restaurant"} onClick={() => setCatFilter("Restaurant")} />
+
+                <div className="mx-1 h-5 w-px shrink-0 bg-text-secondary/20" />
+
+                <PillButton label="Newest" active={sortMode === "newest"} onClick={() => setSortMode("newest")} />
+                <PillButton label="Highest" active={sortMode === "highest"} onClick={() => setSortMode("highest")} />
+                <PillButton label="Lowest" active={sortMode === "lowest"} onClick={() => setSortMode("lowest")} />
+              </div>
+            </div>
+
+            {/* Logs display */}
+            {filteredSpots && filteredSpots.length === 0 ? (
+              <div className="py-16 text-center neu-raised">
+                <p className="text-sm text-text-secondary">No logs match your current query or filters.</p>
+              </div>
+            ) : feedViewMode === "list" ? (
+              /* List/Table View Mode */
+              <div className="neu-raised p-4 space-y-3 pt-2">
+                {paginatedSpots && (paginatedSpots as FoodSpotLog[]).map((spot: FoodSpotLog) => (
+                  <FeedListItem
+                    key={spot.id}
+                    spot={spot}
+                    onSelect={() => spot.id !== undefined && setSelectedSpotId(spot.id)}
+                    onDelete={() => spot.id !== undefined && deleteEntry(spot.id)}
+                  />
+                ))}
+              </div>
+            ) : (
+              /* Grid Cards View Mode */
+              <div className="neu-raised p-4 grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
+                {paginatedSpots && (paginatedSpots as FoodSpotLog[]).map((spot: FoodSpotLog, index: number) => (
+                  <div key={spot.id} className="relative group/item min-h-[220px]">
+                    <SpotCard
+                      spot={spot}
+                      index={index}
+                      onClick={() => spot.id !== undefined && setSelectedSpotId(spot.id)}
+                    />
+                    {spot.pendingSync && (
+                      <div className="pending-sync-badge" title="Waiting to sync to cloud">
+                        <CloudOff className="h-3 w-3" />
+                      </div>
+                    )}
+                    <button
+                      type="button"
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        spot.id !== undefined && deleteEntry(spot.id);
+                      }}
+                      className="absolute right-4 bottom-4 neu-button inline-flex h-8 w-8 items-center justify-center rounded-full text-text-secondary/70 opacity-0 group-hover/item:opacity-100 transition-opacity duration-300 hover:text-red-500 active:shadow-neu-inset cursor-pointer z-10 bg-bg"
+                      aria-label="Delete entry"
+                    >
+                      <Trash2 className="h-3.5 w-3.5" />
+                    </button>
+                  </div>
+                ))}
+              </div>
+            )}
+
+            {/* Pagination Controls Bar */}
+            {totalFilteredCount > 0 && (
+              <div className="neu-raised p-3.5 flex flex-col sm:flex-row items-center justify-between gap-3 text-xs">
+                <div className="text-text-secondary font-mono">
+                  Showing <span className="font-bold text-text-primary">{startItem}–{endItem}</span> of{" "}
+                  <span className="font-bold text-accent">{totalFilteredCount}</span> spots
+                </div>
+
+                <div className="flex items-center gap-1.5">
+                  <button
+                    type="button"
+                    disabled={currentPage === 1}
+                    onClick={() => setCurrentPage((p) => Math.max(1, p - 1))}
+                    className="neu-button px-3 py-1.5 rounded-xl text-xs font-semibold text-text-secondary hover:text-text-primary disabled:opacity-30 disabled:pointer-events-none cursor-pointer flex items-center gap-1"
+                  >
+                    <ChevronLeft className="h-3.5 w-3.5" />
+                    <span>Prev</span>
+                  </button>
+
+                  <div className="flex items-center gap-1">
+                    {Array.from({ length: totalPages }, (_, i) => i + 1).map((pageNum) => (
+                      <button
+                        key={pageNum}
+                        type="button"
+                        onClick={() => setCurrentPage(pageNum)}
+                        className={`h-8 w-8 rounded-xl text-xs font-mono font-bold transition-all cursor-pointer flex items-center justify-center ${currentPage === pageNum
+                            ? "bg-accent text-[#4E342E] shadow-neu-subtle font-extrabold"
+                            : "neu-button text-text-secondary hover:text-text-primary"
+                          }`}
+                      >
+                        {pageNum}
+                      </button>
+                    ))}
+                  </div>
+
+                  <button
+                    type="button"
+                    disabled={currentPage === totalPages}
+                    onClick={() => setCurrentPage((p) => Math.min(totalPages, p + 1))}
+                    className="neu-button px-3 py-1.5 rounded-xl text-xs font-semibold text-text-secondary hover:text-text-primary disabled:opacity-30 disabled:pointer-events-none cursor-pointer flex items-center gap-1"
+                  >
+                    <span>Next</span>
+                    <ChevronRight className="h-3.5 w-3.5" />
+                  </button>
+                </div>
+              </div>
+            )}
+          </div>
+        ) : (
+          <div className="py-12 text-center neu-raised">
+            <p className="text-sm text-text-secondary">Your logs feed will display here once you add a spot.</p>
           </div>
         )}
       </section>
 
+      {/* ---- Form Modal Overlay ---- */}
+      {isFormOpen && (
+        <div
+          ref={modalContainerRef}
+          className="fixed inset-0 z-50 flex items-end sm:items-center justify-center p-0 sm:p-4"
+          role="dialog"
+          aria-modal="true"
+          aria-label="Log new food spot"
+        >
+          {/* Backdrop Overlay */}
+          <div
+            ref={backdropOverlayRef}
+            className="absolute inset-0 bg-black/60 backdrop-blur-sm shadow-[0_0_8px_rgba(0,0,0,0.4)]"
+            onClick={closeFormModal}
+          />
+
+          {/* Localized SVG filter for gooey modal container background */}
+          <svg className="absolute h-0 w-0" aria-hidden="true">
+            <defs>
+              <filter id="gooey-modal">
+                <feGaussianBlur in="SourceGraphic" stdDeviation="15" result="blur" />
+                <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 28 -10" result="gooey" />
+                <feComposite in="SourceGraphic" in2="gooey" operator="atop" />
+              </filter>
+            </defs>
+          </svg>
+
+          {/* Sibling Layer 1: Gooey Background canvas */}
+          <div
+            className="absolute inset-0 pointer-events-none flex items-end sm:items-center justify-center p-0 sm:p-4 overflow-hidden"
+            style={{ filter: "url(#gooey-modal)" }}
+          >
+            {/* The liquid background block */}
+            <div
+              ref={modalGooeyBgRef}
+              className="w-full sm:max-w-md h-[92dvh] sm:h-[630px] rounded-t-[40px] sm:rounded-[40px] bg-bg relative"
+              style={{
+                boxShadow: "0 -3px 0 0 var(--accent)",
+                transformOrigin: "bottom center"
+              }}
+            >
+              {/* Extra floating liquid drops inside gooey layer to trigger organic morphing on open/close */}
+              <div className="absolute -top-6 left-1/4 w-8 h-8 rounded-full bg-accent opacity-20" />
+              <div className="absolute -top-4 right-1/3 w-6 h-6 rounded-full bg-accent opacity-30" />
+            </div>
+          </div>
+
+          {/* Sibling Layer 2: Clean Crisp Form Content */}
+          <div
+            ref={modalContentRef}
+            className="w-full sm:max-w-md rounded-t-3xl sm:rounded-3xl p-5 sm:p-6 overflow-y-auto max-h-[92dvh] sm:max-h-[85dvh] relative flex flex-col z-10 bg-transparent"
+          >
+            {/* Header */}
+            <div className="flex items-center justify-between mb-4 border-b border-text-secondary/10 pb-2.5">
+              <h3 className="text-base sm:text-lg font-serif font-bold text-text-primary">
+                Log a Food Spot
+              </h3>
+              <button
+                type="button"
+                onClick={closeFormModal}
+                className="neu-button flex h-8 w-8 items-center justify-center rounded-full text-text-secondary cursor-pointer hover:text-red-500"
+                aria-label="Close form"
+              >
+                <X className="h-4 w-4" />
+              </button>
+            </div>
+
+            {/* Form */}
+            <form onSubmit={handleSubmit} className="space-y-4">
+              {/* Business Name */}
+              <div>
+                <label
+                  htmlFor="spot-name"
+                  className="mb-1.5 block text-xs font-semibold uppercase tracking-wider text-text-secondary"
+                >
+                  Business / Spot Name
+                </label>
+                <input
+                  id="spot-name"
+                  type="text"
+                  required
+                  value={name}
+                  onChange={(e) => setName(e.target.value)}
+                  placeholder="e.g. Sam's Cafe, Shake Shack…"
+                  className="neu-input w-full"
+                />
+              </div>
+
+              {/* Category selector */}
+              <div>
+                <p className="mb-1.5 text-xs font-semibold uppercase tracking-wider text-text-secondary">
+                  Category
+                </p>
+                <CategoryPills value={category} onChange={setCategory} />
+              </div>
+
+              {/* Rating selector */}
+              <div>
+                <p className="mb-1.5 text-xs font-semibold uppercase tracking-wider text-text-secondary flex justify-between">
+                  <span>Rating</span>
+                  <span className="font-mono text-gold">({rating} / 10)</span>
+                </p>
+                <RatingPills value={rating} onChange={setRating} />
+              </div>
+
+              {/* Comments textarea */}
+              <div>
+                <label
+                  htmlFor="spot-comment"
+                  className="mb-1.5 block text-xs font-semibold uppercase tracking-wider text-text-secondary"
+                >
+                  Comments
+                </label>
+                <textarea
+                  id="spot-comment"
+                  rows={4}
+                  value={comment}
+                  onChange={(e) => setComment(e.target.value)}
+                  placeholder="Notes on experience, cost, or delicious dishes…"
+                  className="neu-input w-full resize-none"
+                />
+              </div>
+
+              {/* Location Picker Section */}
+              <div>
+                <p className="mb-1.5 text-xs font-semibold uppercase tracking-wider text-text-secondary flex justify-between items-center">
+                  <span>Location</span>
+                  <span className="text-[10px] text-text-secondary/50 lowercase font-normal">
+                    {manualCoords ? "custom pin set" : "auto-GPS fallback"}
+                  </span>
+                </p>
+
+                {manualCoords ? (
+                  <div className="neu-card p-3 rounded-2xl flex items-center justify-between gap-3 border border-accent/20 bg-accent/5">
+                    <div className="flex items-center gap-2.5 min-w-0">
+                      <div className="p-2 rounded-xl bg-accent text-white shrink-0 shadow-neu-subtle">
+                        <MapPin className="h-4 w-4" />
+                      </div>
+                      <div className="min-w-0">
+                        <p className="text-xs font-semibold text-text-primary truncate">
+                          Pinned Location
+                        </p>
+                        <p className="text-[11px] font-mono text-text-secondary truncate">
+                          {manualCoords.latitude.toFixed(5)}, {manualCoords.longitude.toFixed(5)}
+                        </p>
+                      </div>
+                    </div>
+                    <div className="flex items-center gap-1 shrink-0">
+                      <button
+                        type="button"
+                        onClick={() => setIsLocationPickerOpen(true)}
+                        className="neu-button px-2.5 py-1.5 rounded-xl text-xs font-semibold text-accent hover:text-accent-glow cursor-pointer"
+                      >
+                        Edit
+                      </button>
+                      <button
+                        type="button"
+                        onClick={() => setManualCoords(null)}
+                        className="neu-button px-2.5 py-1.5 rounded-xl text-xs font-semibold text-text-secondary hover:text-red-500 cursor-pointer"
+                        title="Remove pinned location"
+                      >
+                        Clear
+                      </button>
+                    </div>
+                  </div>
+                ) : (
+                  <div className="space-y-2">
+                    <div className="grid grid-cols-2 gap-2">
+                      <button
+                        type="button"
+                        onClick={() => setIsLocationPickerOpen(true)}
+                        className="neu-button p-2.5 rounded-2xl flex flex-col items-center justify-center text-center gap-1 cursor-pointer hover:border-accent/30 transition-all border border-text-secondary/10"
+                      >
+                        <MapPin className="h-4 w-4 text-accent" />
+                        <span className="text-xs font-semibold text-text-primary">Pin on Map</span>
+                        <span className="text-[10px] text-text-secondary/60">Choose exact point</span>
+                      </button>
+
+                      <button
+                        type="button"
+                        onClick={handleCaptureCurrentGPS}
+                        disabled={gettingGps}
+                        className="neu-button p-2.5 rounded-2xl flex flex-col items-center justify-center text-center gap-1 cursor-pointer hover:border-accent/30 transition-all border border-text-secondary/10 disabled:opacity-50"
+                      >
+                        <Locate className={`h-4 w-4 text-accent ${gettingGps ? "animate-spin" : ""}`} />
+                        <span className="text-xs font-semibold text-text-primary">
+                          {gettingGps ? "Locating…" : "Use Current GPS"}
+                        </span>
+                        <span className="text-[10px] text-text-secondary/60">Detect position</span>
+                      </button>
+                    </div>
+                    <p className="text-[10px] text-text-secondary/50 text-center italic">
+                      If unselected, device GPS will be captured automatically when submitting.
+                    </p>
+                  </div>
+                )}
+              </div>
+
+              {/* Photo Area */}
+              <div>
+                <p className="mb-1.5 text-xs font-semibold uppercase tracking-wider text-text-secondary">
+                  Photo <span className="text-[10px] text-text-secondary/50 lowercase font-normal">(optional)</span>
+                </p>
+                <div
+                  onDragOver={(e) => { e.preventDefault(); setDragActive(true); }}
+                  onDragLeave={() => setDragActive(false)}
+                  onDrop={(e) => {
+                    e.preventDefault();
+                    setDragActive(false);
+                    if (e.dataTransfer.files?.[0]) {
+                      setImageFile(e.dataTransfer.files[0]);
+                    }
+                  }}
+                  onClick={() => fileInputRef.current?.click()}
+                  className={`
+                    upload-dropzone p-4 flex flex-col items-center justify-center cursor-pointer transition-all duration-300 min-h-[100px]
+                    ${dragActive ? "active-drop animate-pulse-border" : ""}
+                    ${imageFile ? "border-accent/40 bg-accent/5" : "border-text-secondary/25"}
+                  `}
+                >
+                  <Camera className={`h-5 w-5 mb-1 ${imageFile ? "text-accent" : "text-text-secondary/60"}`} />
+                  <p className="text-xs font-bold text-text-primary">
+                    {imageFile ? "Change Photo" : "Upload or Drop Image"}
+                  </p>
+                  <p className="text-[10px] text-text-secondary/45 mt-0.5">
+                    Max 1MB JPEG/PNG
+                  </p>
+                  <input
+                    ref={fileInputRef}
+                    id="spot-photo"
+                    type="file"
+                    accept="image/*"
+                    onChange={(e) => setImageFile(e.target.files?.[0] ?? null)}
+                    className="sr-only"
+                  />
+                </div>
+
+                {previewUrl && (
+                  <div className="relative mt-3 inline-block animate-liquid-pop">
+                    <img
+                      src={previewUrl}
+                      alt="Selected photo preview"
+                      className="h-16 w-16 rounded-2xl object-cover shadow-neu-subtle p-1 bg-bg border border-accent/20"
+                    />
+                    <button
+                      type="button"
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        setImageFile(null);
+                        if (fileInputRef.current) fileInputRef.current.value = "";
+                      }}
+                      className="absolute -right-2 -top-2 flex h-5 w-5 items-center justify-center rounded-full bg-accent text-white text-[9px] shadow hover:scale-110 active:scale-90 transition-all cursor-pointer border border-bg"
+                      aria-label="Remove photo"
+                    >
+                      ✕
+                    </button>
+                  </div>
+                )}
+              </div>
+
+              {/* Submit Button */}
+              <button
+                type="submit"
+                disabled={saving || !name.trim() || success}
+                className={`
+                  w-full rounded-2xl py-3 text-sm sm:text-base font-bold
+                  transition-all duration-300 cursor-pointer min-h-[44px] flex items-center justify-center gap-2
+                  ${success
+                    ? "bg-green-600 text-white shadow-neu-inset scale-[0.98]"
+                    : "bg-gold text-[#4E342E] shadow-neu-button hover:bg-gold/90 hover:shadow-neu-raised active:shadow-neu-inset"
+                  }
+                  disabled:opacity-40
+                `}
+              >
+                {saving ? (
+                  <>
+                    <div className="h-4 w-4 animate-spin rounded-full border-2 border-white/20 border-t-white" />
+                    Saving...
+                  </>
+                ) : success ? (
+                  <span className="gsap-success-tick flex items-center gap-1 font-bold">
+                    ✓ Saved!
+                  </span>
+                ) : (
+                  "Log Spot"
+                )}
+              </button>
+            </form>
+          </div>
+        </div>
+      )}
+
+      {/* ---- Location Picker Map Modal ---- */}
+      {isLocationPickerOpen && (
+        <LocationPickerModal
+          initialLat={manualCoords?.latitude}
+          initialLng={manualCoords?.longitude}
+          onConfirm={(coords) => {
+            setManualCoords(coords);
+            showToast("📍 Location pin saved", "info");
+          }}
+          onClose={() => setIsLocationPickerOpen(false)}
+        />
+      )}
+
+      {/* ---- Floating Action Button (FAB) ---- */}
+      {effectiveUid && (
+        <button
+          type="button"
+          onClick={openFormModal}
+          onMouseEnter={() => handleFABHover(true)}
+          onMouseLeave={() => handleFABHover(false)}
+          onMouseDown={() => handleFABPress(true)}
+          onMouseUp={() => handleFABPress(false)}
+          className="gsap-fab fixed bottom-6 right-6 z-40 h-14 w-14 rounded-full bg-gold text-[#4E342E] font-bold flex items-center justify-center shadow-lg cursor-pointer transition-all duration-300 group md:hidden hover:scale-105 active:scale-95"
+          aria-label="Add new spot"
+        >
+          <Plus className="h-6 w-6 text-[#4E342E]" />
+        </button>
+      )}
+
       {/* ---- Detail modal ---- */}
       {selectedSpotId !== null && (
         <SpotDetailModal
@@ -751,3 +1980,14 @@ export default function Home() {
     </div>
   );
 }
+
+/* ------------------------------------------------------------------ */
+/*  Export with AuthGuard wrapper                                       */
+/* ------------------------------------------------------------------ */
+export default function Home() {
+  return (
+    <AuthGuard>
+      <HomePage />
+    </AuthGuard>
+  );
+}
diff --git a/app/sw.ts b/app/sw.ts
index ec2eee5..c5b2303 100644
--- a/app/sw.ts
+++ b/app/sw.ts
@@ -1,10 +1,28 @@
 import { defaultCache } from "@serwist/next/worker";
-import { type PrecacheEntry, Serwist, cacheNames } from "serwist";
+import { type PrecacheEntry, Serwist, cacheNames, StaleWhileRevalidate, CacheFirst, ExpirationPlugin } from "serwist";
 
 declare const self: ServiceWorkerGlobalScope & {
   __SW_MANIFEST: (PrecacheEntry | string)[] | undefined;
 };
 
+// Caching rule for OpenStreetMap tile requests.
+// OSM tiles are fetched from URLs matching "tile.openstreetmap.org".
+// We use a CacheFirst strategy so tiles are read from cache offline.
+// Note: map tiles become available offline only for areas the user has already viewed while online (opportunistic caching) — not a pre-downloaded full region.
+const osmTileCacheRule = {
+  matcher: /tile\.openstreetmap\.org/i,
+  handler: new CacheFirst({
+    cacheName: "openstreetmap-tiles",
+    plugins: [
+      new ExpirationPlugin({
+        maxEntries: 1000,
+        maxAgeSeconds: 30 * 24 * 60 * 60, // 30 days
+        maxAgeFrom: "last-used",
+      }),
+    ],
+  }),
+};
+
 const serwist = new Serwist({
   precacheEntries: self.__SW_MANIFEST,
   // Force immediate activation — don't wait for existing tabs to close.
@@ -13,7 +31,23 @@ const serwist = new Serwist({
   // so users never need a manual refresh to get the new SW.
   clientsClaim: true,
   navigationPreload: true,
-  runtimeCaching: defaultCache,
+  runtimeCaching: [
+    osmTileCacheRule,
+    {
+      matcher: /^https:\/\/lh[0-9]*\.googleusercontent\.com\/.*/i,
+      handler: new StaleWhileRevalidate({
+        cacheName: "google-user-avatars",
+        plugins: [
+          new ExpirationPlugin({
+            maxEntries: 50,
+            maxAgeSeconds: 30 * 24 * 60 * 60, // 30 days
+            maxAgeFrom: "last-used",
+          }),
+        ],
+      }),
+    },
+    ...defaultCache,
+  ],
   // Serve the precached /offline page when a NetworkFirst handler fails
   // for a navigation request (e.g. deep link the user has never visited).
   fallbacks: {
diff --git a/auth.ts b/auth.ts
new file mode 100644
index 0000000..0f03b22
--- /dev/null
+++ b/auth.ts
@@ -0,0 +1,61 @@
+import NextAuth from "next-auth";
+import Google from "next-auth/providers/google";
+
+/**
+ * Auth.js v5 (NextAuth) configuration.
+ *
+ * NextAuth handles ONLY the Google OAuth handshake. It does NOT manage a user
+ * database — we use JWT sessions so NextAuth never needs its own DB tables.
+ * After NextAuth confirms the user's Google identity, the client exchanges the
+ * session for a Firebase custom token via /api/firebase-token, so Firebase Auth
+ * + Firestore remain the sole account/data backend.
+ *
+ * MANUAL SETUP REQUIRED:
+ * 1. Create a Google OAuth Client ID + Secret in Google Cloud Console
+ *    (separate from Firebase's auto-created one).
+ *    Authorized redirect URIs:
+ *      - http://localhost:3000/api/auth/callback/google  (dev)
+ *      - https://<your-vercel-domain>/api/auth/callback/google  (prod)
+ * 2. Set env vars: AUTH_GOOGLE_ID, AUTH_GOOGLE_SECRET, AUTH_SECRET
+ *    (AUTH_SECRET can be generated via `npx auth secret`)
+ */
+export const { handlers, auth, signIn, signOut } = NextAuth({
+  providers: [
+    Google({
+      clientId: process.env.AUTH_GOOGLE_ID,
+      clientSecret: process.env.AUTH_GOOGLE_SECRET,
+    }),
+  ],
+
+  // JWT session strategy — no database adapter needed.
+  session: { strategy: "jwt" },
+
+  // Redirect auth errors to our login page instead of NextAuth's built-in
+  // error page (which was returning a 500).
+  pages: {
+    signIn: "/login",
+    error: "/login",
+  },
+
+  callbacks: {
+    /** Persist user info from the OAuth profile into the JWT. */
+    async jwt({ token, profile }) {
+      if (profile) {
+        token.email = profile.email;
+        token.name = profile.name;
+        token.picture = profile.picture;
+      }
+      return token;
+    },
+
+    /** Expose the user info from the JWT in the session object. */
+    async session({ session, token }) {
+      if (session.user) {
+        session.user.email = token.email as string;
+        session.user.name = token.name as string;
+        session.user.image = token.picture as string;
+      }
+      return session;
+    },
+  },
+});
diff --git a/components/AuthGuard.tsx b/components/AuthGuard.tsx
new file mode 100644
index 0000000..4b98de1
--- /dev/null
+++ b/components/AuthGuard.tsx
@@ -0,0 +1,51 @@
+"use client";
+
+import { useEffect } from "react";
+import { useAuth } from "@/lib/auth";
+
+/**
+ * Client-side auth guard.
+ *
+ * Renders children only when the user is authenticated.
+ * Redirects to /login otherwise.
+ *
+ * Offline behaviour:
+ * - While Firebase Auth is still loading, checks `cachedSession` from
+ *   localStorage. If a cached session exists, renders children immediately
+ *   using the cached UID (Dexie queries work offline with this UID).
+ * - Only redirects to /login when Firebase confirms no user AND there
+ *   is no cached session — prevents offline redirect loops.
+ */
+export default function AuthGuard({ children }: { children: React.ReactNode }) {
+  const { user, loading, cachedSession } = useAuth();
+
+  useEffect(() => {
+    // Only redirect when auth has fully resolved AND there's no cached session
+    if (!loading && !user && !cachedSession) {
+      console.log("[KeepCheck AuthGuard] No user or cached session — redirecting to /login");
+      window.location.href = "/login";
+    }
+  }, [user, loading, cachedSession]);
+
+  // Show loading spinner only when there's no cached session to fall back on
+  if (loading && !cachedSession) {
+    return (
+      <div className="flex min-h-dvh items-center justify-center bg-bg">
+        <div className="neu-raised flex flex-col items-center gap-4 rounded-3xl p-10">
+          <div className="h-12 w-12 animate-spin rounded-full border-4 border-text-secondary/20 border-t-accent" />
+          <p className="text-sm font-medium text-text-secondary animate-pulse">
+            Loading…
+          </p>
+        </div>
+      </div>
+    );
+  }
+
+  // No user AND no cached session → will redirect, render nothing to avoid flash
+  if (!user && !cachedSession) {
+    return null;
+  }
+
+  // Either the real user is present, or we have a cached session to work with offline
+  return <>{children}</>;
+}
diff --git a/components/LocationPickerMap.tsx b/components/LocationPickerMap.tsx
new file mode 100644
index 0000000..163b4df
--- /dev/null
+++ b/components/LocationPickerMap.tsx
@@ -0,0 +1,212 @@
+"use client";
+
+import { useEffect, useRef, useState, useCallback } from "react";
+import L from "leaflet";
+import "leaflet/dist/leaflet.css";
+import { Locate, Navigation } from "lucide-react";
+
+interface LocationPickerMapProps {
+  initialLat?: number;
+  initialLng?: number;
+  onLocationSelected: (coords: { latitude: number; longitude: number }) => void;
+}
+
+const createPickerPinIcon = () => {
+  const htmlContent = `
+    <div style="
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      width: 38px;
+      height: 38px;
+      border-radius: 50%;
+      background-color: var(--accent, #e11d48);
+      border: 3px solid white;
+      box-shadow: 0 6px 14px rgba(0, 0, 0, 0.35);
+      color: white;
+      position: relative;
+    ">
+      <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
+        <path d="M20 10c0 6-8 12-8 12s-8-6-8-10a8 8 0 0 1 16 0Z"/>
+        <circle cx="12" cy="10" r="3"/>
+      </svg>
+      <div style="
+        position: absolute;
+        bottom: -7px;
+        left: 50%;
+        transform: translateX(-50%);
+        width: 0;
+        height: 0;
+        border-left: 6px solid transparent;
+        border-right: 6px solid transparent;
+        border-top: 7px solid var(--accent, #e11d48);
+      "></div>
+    </div>
+  `;
+
+  return L.divIcon({
+    html: htmlContent,
+    className: "location-picker-marker",
+    iconSize: [38, 45],
+    iconAnchor: [19, 45],
+  });
+};
+
+export default function LocationPickerMap({
+  initialLat,
+  initialLng,
+  onLocationSelected,
+}: LocationPickerMapProps) {
+  const mapContainerRef = useRef<HTMLDivElement>(null);
+  const mapRef = useRef<L.Map | null>(null);
+  const markerRef = useRef<L.Marker | null>(null);
+
+  const [currentCoords, setCurrentCoords] = useState<{ latitude: number; longitude: number } | null>(
+    initialLat !== undefined && initialLng !== undefined
+      ? { latitude: initialLat, longitude: initialLng }
+      : null
+  );
+
+  const [locating, setLocating] = useState(false);
+
+  // Update marker position & fire callback
+  const setPin = useCallback(
+    (lat: number, lng: number) => {
+      const roundedLat = Number(lat.toFixed(6));
+      const roundedLng = Number(lng.toFixed(6));
+
+      setCurrentCoords({ latitude: roundedLat, longitude: roundedLng });
+      onLocationSelected({ latitude: roundedLat, longitude: roundedLng });
+
+      if (mapRef.current) {
+        if (!markerRef.current) {
+          const marker = L.marker([lat, lng], {
+            icon: createPickerPinIcon(),
+            draggable: true,
+          }).addTo(mapRef.current);
+
+          marker.on("dragend", () => {
+            const pos = marker.getLatLng();
+            const rLat = Number(pos.lat.toFixed(6));
+            const rLng = Number(pos.lng.toFixed(6));
+            setCurrentCoords({ latitude: rLat, longitude: rLng });
+            onLocationSelected({ latitude: rLat, longitude: rLng });
+          });
+
+          markerRef.current = marker;
+        } else {
+          markerRef.current.setLatLng([lat, lng]);
+        }
+      }
+    },
+    [onLocationSelected]
+  );
+
+  useEffect(() => {
+    if (!mapContainerRef.current || mapRef.current) return;
+
+    // Default starting center (if no initial coords, start at Manila center or 14.5995, 120.9842)
+    const defaultLat = initialLat ?? 14.5995;
+    const defaultLng = initialLng ?? 120.9842;
+    const zoom = initialLat && initialLng ? 16 : 13;
+
+    const map = L.map(mapContainerRef.current, {
+      zoomControl: true,
+    }).setView([defaultLat, defaultLng], zoom);
+
+    mapRef.current = map;
+
+    L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
+      attribution:
+        '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
+    }).addTo(map);
+
+    if (initialLat !== undefined && initialLng !== undefined) {
+      setPin(initialLat, initialLng);
+    } else {
+      // Try auto-locating on map load if no initial location
+      if (navigator.geolocation) {
+        setLocating(true);
+        navigator.geolocation.getCurrentPosition(
+          (pos) => {
+            setLocating(false);
+            const { latitude, longitude } = pos.coords;
+            map.setView([latitude, longitude], 15);
+            setPin(latitude, longitude);
+          },
+          () => {
+            setLocating(false);
+          },
+          { enableHighAccuracy: false, timeout: 4000 }
+        );
+      }
+    }
+
+    // Map click handler to move/set pin
+    map.on("click", (e: L.LeafletMouseEvent) => {
+      setPin(e.latlng.lat, e.latlng.lng);
+    });
+
+    return () => {
+      map.remove();
+      mapRef.current = null;
+      markerRef.current = null;
+    };
+  }, []);
+
+  // Button handler to center map on GPS position
+  const handleLocateUser = () => {
+    if (!navigator.geolocation) return;
+
+    setLocating(true);
+    navigator.geolocation.getCurrentPosition(
+      (pos) => {
+        setLocating(false);
+        const { latitude, longitude } = pos.coords;
+        if (mapRef.current) {
+          mapRef.current.flyTo([latitude, longitude], 16, { duration: 1 });
+        }
+        setPin(latitude, longitude);
+      },
+      (err) => {
+        setLocating(false);
+        alert("Could not access your location. Please tap directly on the map to set a pin.");
+      },
+      { enableHighAccuracy: false, timeout: 5000 }
+    );
+  };
+
+  return (
+    <div className="relative w-full h-full min-h-[350px] sm:min-h-[420px] rounded-2xl overflow-hidden border border-text-secondary/15 shadow-neu-inset">
+      {/* Map Element */}
+      <div ref={mapContainerRef} className="w-full h-full min-h-[350px] sm:min-h-[420px]" />
+
+      {/* Floating GPS Button */}
+      <button
+        type="button"
+        onClick={handleLocateUser}
+        disabled={locating}
+        className="absolute top-3 right-3 z-[400] neu-button bg-bg/90 backdrop-blur-md p-2.5 rounded-xl text-text-primary shadow-neu-subtle hover:text-accent flex items-center gap-2 text-xs font-semibold cursor-pointer active:scale-95 transition-all"
+        title="Locate me"
+      >
+        <Locate className={`h-4 w-4 text-accent ${locating ? "animate-spin" : ""}`} />
+        <span className="hidden sm:inline">{locating ? "Locating…" : "My Location"}</span>
+      </button>
+
+      {/* Pin Status Banner */}
+      <div className="absolute bottom-3 left-3 right-3 z-[400] bg-bg/95 backdrop-blur-md px-3.5 py-2.5 rounded-xl border border-text-secondary/15 shadow-neu-raised flex items-center justify-between text-xs">
+        <div className="flex items-center gap-2 truncate">
+          <Navigation className="h-4 w-4 text-accent shrink-0" />
+          <span className="font-mono text-text-primary font-medium truncate">
+            {currentCoords
+              ? `${currentCoords.latitude.toFixed(5)}, ${currentCoords.longitude.toFixed(5)}`
+              : "Tap map to set pin"}
+          </span>
+        </div>
+        <span className="text-[10px] text-text-secondary font-sans ml-2 shrink-0">
+          {currentCoords ? "✓ Pin placed" : "Click anywhere"}
+        </span>
+      </div>
+    </div>
+  );
+}
diff --git a/components/LocationPickerModal.tsx b/components/LocationPickerModal.tsx
new file mode 100644
index 0000000..f7f5ada
--- /dev/null
+++ b/components/LocationPickerModal.tsx
@@ -0,0 +1,123 @@
+"use client";
+
+import { useState } from "react";
+import dynamic from "next/dynamic";
+import { X, MapPin, Check } from "lucide-react";
+
+const LocationPickerMap = dynamic(() => import("./LocationPickerMap"), {
+  ssr: false,
+  loading: () => (
+    <div className="w-full h-[350px] sm:h-[420px] rounded-2xl neu-raised bg-bg/40 flex flex-col items-center justify-center gap-3 text-text-secondary text-sm font-mono animate-pulse">
+      <MapPin className="h-8 w-8 text-accent/60" />
+      <span>Loading Interactive Map…</span>
+    </div>
+  ),
+});
+
+interface LocationPickerModalProps {
+  initialLat?: number;
+  initialLng?: number;
+  onConfirm: (coords: { latitude: number; longitude: number }) => void;
+  onClose: () => void;
+}
+
+export default function LocationPickerModal({
+  initialLat,
+  initialLng,
+  onConfirm,
+  onClose,
+}: LocationPickerModalProps) {
+  const [selectedCoords, setSelectedCoords] = useState<{
+    latitude: number;
+    longitude: number;
+  } | null>(
+    initialLat !== undefined && initialLng !== undefined
+      ? { latitude: initialLat, longitude: initialLng }
+      : null
+  );
+
+  return (
+    <div
+      className="fixed inset-0 z-[100] flex items-center justify-center p-3 sm:p-6"
+      role="dialog"
+      aria-modal="true"
+      aria-label="Pin spot location on map"
+    >
+      {/* Backdrop */}
+      <div
+        className="absolute inset-0 bg-black/70 backdrop-blur-md transition-opacity"
+        onClick={onClose}
+      />
+
+      {/* Modal Card */}
+      <div className="relative z-10 w-full max-w-2xl bg-bg rounded-3xl p-4 sm:p-6 border border-text-secondary/15 shadow-neu-raised flex flex-col max-h-[92dvh]">
+        {/* Header */}
+        <div className="flex items-center justify-between pb-3 mb-3 border-b border-text-secondary/10">
+          <div className="flex items-center gap-2.5">
+            <div className="p-2 rounded-xl bg-accent/10 text-accent">
+              <MapPin className="h-5 w-5" />
+            </div>
+            <div>
+              <h3 className="text-base sm:text-lg font-serif font-bold text-text-primary">
+                Pin Location on Map
+              </h3>
+              <p className="text-xs text-text-secondary">
+                Tap anywhere on the map or drag the pin to set the exact spot position.
+              </p>
+            </div>
+          </div>
+          <button
+            type="button"
+            onClick={onClose}
+            className="neu-button flex h-9 w-9 items-center justify-center rounded-full text-text-secondary cursor-pointer hover:text-red-500 shrink-0"
+            aria-label="Close location picker"
+          >
+            <X className="h-4 w-4" />
+          </button>
+        </div>
+
+        {/* Map Container */}
+        <div className="flex-1 w-full overflow-hidden my-1">
+          <LocationPickerMap
+            initialLat={initialLat}
+            initialLng={initialLng}
+            onLocationSelected={(coords) => setSelectedCoords(coords)}
+          />
+        </div>
+
+        {/* Footer Actions */}
+        <div className="pt-4 mt-2 border-t border-text-secondary/10 flex items-center justify-between gap-3">
+          <div className="text-xs font-mono text-text-secondary truncate hidden sm:block">
+            {selectedCoords
+              ? `📍 ${selectedCoords.latitude.toFixed(5)}, ${selectedCoords.longitude.toFixed(5)}`
+              : "No pin selected"}
+          </div>
+
+          <div className="flex items-center gap-2.5 w-full sm:w-auto justify-end">
+            <button
+              type="button"
+              onClick={onClose}
+              className="neu-button rounded-xl px-4 py-2.5 text-xs sm:text-sm font-semibold text-text-secondary hover:text-text-primary cursor-pointer flex-1 sm:flex-initial"
+            >
+              Cancel
+            </button>
+            <button
+              type="button"
+              disabled={!selectedCoords}
+              onClick={() => {
+                if (selectedCoords) {
+                  onConfirm(selectedCoords);
+                  onClose();
+                }
+              }}
+              className="neu-button rounded-xl px-5 py-2.5 text-xs sm:text-sm font-bold bg-gold text-[#4E342E] hover:bg-gold/90 disabled:opacity-40 cursor-pointer flex items-center justify-center gap-1.5 flex-1 sm:flex-initial shadow-neu-button"
+            >
+              <Check className="h-4 w-4" />
+              <span>Confirm Location</span>
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/components/SpotDetailModal.tsx b/components/SpotDetailModal.tsx
index ba7d761..bc06399 100644
--- a/components/SpotDetailModal.tsx
+++ b/components/SpotDetailModal.tsx
@@ -5,6 +5,9 @@ import { useLiveQuery } from "dexie-react-hooks";
 import { db } from "@/app/db";
 import { makeThumbnailFromBlob } from "@/utils/image";
 import { X, ImageOff, RefreshCw } from "lucide-react";
+import { useAuth } from "@/lib/auth";
+import { writeSpotToFirestore } from "@/lib/firestore";
+import { useToast } from "@/lib/toast";
 
 /* ------------------------------------------------------------------ */
 /*  Props                                                              */
@@ -19,14 +22,7 @@ interface SpotDetailModalProps {
 /* ------------------------------------------------------------------ */
 
 /**
- * Full-resolution image viewer modal.
- *
- * Queries the `images` store for the Blob associated with `spotId`,
- * converts it to a displayable object URL, and revokes the URL on
- * unmount / image change to prevent memory leaks.
- *
- * Includes an opportunistic "Regenerate thumbnail" button so users can
- * fix old 150px thumbnails created before the resolution bump to 400px.
+ * Full-resolution image viewer modal — neumorphic design.
  */
 export default function SpotDetailModal({
   spotId,
@@ -37,6 +33,8 @@ export default function SpotDetailModal({
     [spotId],
   );
 
+  const { user } = useAuth();
+  const { showToast } = useToast();
   const [objectUrl, setObjectUrl] = useState<string | null>(null);
   const [regenerating, setRegenerating] = useState(false);
   const [regenerated, setRegenerated] = useState(false);
@@ -65,28 +63,58 @@ export default function SpotDetailModal({
     return () => window.removeEventListener("keydown", handleKey);
   }, [onClose]);
 
+  /* ---- Prevent body scroll when modal is open ---- */
+  useEffect(() => {
+    document.body.style.overflow = "hidden";
+    return () => {
+      document.body.style.overflow = "";
+    };
+  }, []);
+
   /* ---- Regenerate thumbnail from full-res Blob ---- */
   const handleRegenerate = useCallback(async () => {
     if (!image?.blob) return;
     setRegenerating(true);
     try {
+      const spot = await db.spots.get(spotId);
+      if (!spot) throw new Error("Spot not found locally");
+
       const newThumb = await makeThumbnailFromBlob(image.blob);
-      await db.spots.update(spotId, { thumbnail: newThumb });
+      await db.spots.update(spotId, { thumbnail: newThumb, pendingSync: true });
+
+      if (user && spot.firebaseId) {
+        try {
+          await writeSpotToFirestore(user.uid, spot.firebaseId, {
+            name: spot.name,
+            category: spot.category,
+            rating: spot.rating,
+            comment: spot.comment,
+            createdAt: spot.createdAt,
+            thumbnail: newThumb,
+            latitude: spot.latitude,
+            longitude: spot.longitude,
+          });
+          await db.spots.update(spotId, { pendingSync: false });
+        } catch (fireErr) {
+          console.warn("[KeepCheck] Firestore thumbnail sync failed, will retry on sweep:", fireErr);
+        }
+      }
+
       setRegenerated(true);
+      showToast("✓ Thumbnail updated successfully!", "success");
     } catch (err) {
       console.error("[KeepCheck] Thumbnail regeneration failed:", err);
-      alert("Could not regenerate thumbnail. Please try again.");
+      showToast("Could not regenerate thumbnail. Please try again.", "error");
     } finally {
       setRegenerating(false);
     }
-  }, [image, spotId]);
+  }, [image, spotId, user, showToast]);
 
   /* ---- Render ---- */
   return (
     <div
-      className="fixed inset-0 z-50 flex items-center justify-center bg-black/80 backdrop-blur-sm p-4"
+      className="fixed inset-0 z-50 flex items-center justify-center bg-black/60 p-4 animate-backdrop"
       onClick={(e) => {
-        // Close when clicking the backdrop (not the image itself).
         if (e.target === e.currentTarget) onClose();
       }}
       role="dialog"
@@ -97,48 +125,61 @@ export default function SpotDetailModal({
       <button
         type="button"
         onClick={onClose}
-        className="absolute right-4 top-4 z-10 flex h-11 w-11 items-center justify-center rounded-full bg-surface/90 text-text-primary backdrop-blur-sm transition-all hover:bg-bg active:scale-95 cursor-pointer border border-text-secondary/15"
+        className="absolute right-4 top-4 z-10 neu-button flex h-11 w-11 items-center justify-center rounded-full text-text-primary cursor-pointer"
         aria-label="Close"
       >
         <X className="h-5 w-5" />
       </button>
 
-      {/* Image or placeholder */}
-      {image === undefined ? (
-        /* Still loading from IndexedDB */
-        <div className="text-sm font-mono text-text-secondary">Loading…</div>
-      ) : objectUrl ? (
-        <div className="flex flex-col items-center gap-3">
-          <img
-            src={objectUrl}
-            alt="Full-resolution spot photo"
-            className="max-h-[85dvh] max-w-full rounded-lg object-contain shadow-2xl border border-text-secondary/15"
-          />
-
-          {/* Regenerate thumbnail — fixes old 150px thumbnails */}
-          {!regenerated ? (
-            <button
-              type="button"
-              onClick={handleRegenerate}
-              disabled={regenerating}
-              className="inline-flex items-center gap-2 rounded-full bg-surface/90 px-4 py-2 text-xs font-medium text-text-primary backdrop-blur-sm transition-all hover:bg-bg active:scale-95 disabled:opacity-50 cursor-pointer border border-text-secondary/15"
-            >
-              <RefreshCw
-                className={`h-3.5 w-3.5 ${regenerating ? "animate-spin" : ""}`}
+      {/* Content */}
+      <div className="animate-modal-enter max-w-2xl w-full">
+        {image === undefined ? (
+          /* Still loading from IndexedDB */
+          <div className="neu-raised flex items-center justify-center p-12 rounded-3xl">
+            <div className="flex flex-col items-center gap-3">
+              <div className="h-8 w-8 animate-spin rounded-full border-3 border-text-secondary/20 border-t-accent" />
+              <p className="text-sm font-mono text-text-secondary">Loading…</p>
+            </div>
+          </div>
+        ) : objectUrl ? (
+          <div className="flex flex-col items-center gap-4">
+            <div className="neu-raised overflow-hidden p-2 rounded-3xl">
+              <img
+                src={objectUrl}
+                alt="Full-resolution spot photo"
+                className="max-h-[80dvh] max-w-full rounded-2xl object-contain"
               />
-              {regenerating ? "Regenerating…" : "Regenerate Thumbnail"}
-            </button>
-          ) : (
-            <p className="text-xs font-mono text-accent">✓ Thumbnail updated</p>
-          )}
-        </div>
-      ) : (
-        /* No image stored for this spot */
-        <div className="flex flex-col items-center gap-3 text-text-secondary">
-          <ImageOff className="h-12 w-12" />
-          <p className="text-sm font-mono">No photo attached</p>
-        </div>
-      )}
+            </div>
+
+            {/* Regenerate thumbnail */}
+            {!regenerated ? (
+              <button
+                type="button"
+                onClick={handleRegenerate}
+                disabled={regenerating}
+                className="neu-button inline-flex items-center gap-2 rounded-full px-5 py-2.5 text-xs font-medium text-text-primary disabled:opacity-50 cursor-pointer"
+              >
+                <RefreshCw
+                  className={`h-3.5 w-3.5 ${regenerating ? "animate-spin" : ""}`}
+                />
+                {regenerating ? "Regenerating…" : "Regenerate Thumbnail"}
+              </button>
+            ) : (
+              <p className="text-xs font-mono text-category-cafe font-bold animate-page-enter">
+                ✓ Thumbnail updated
+              </p>
+            )}
+          </div>
+        ) : (
+          /* No image stored for this spot */
+          <div className="neu-raised flex flex-col items-center gap-4 p-12 rounded-3xl">
+            <div className="neu-inset flex h-20 w-20 items-center justify-center rounded-full">
+              <ImageOff className="h-8 w-8 text-text-secondary" />
+            </div>
+            <p className="text-sm font-mono text-text-secondary">No photo attached</p>
+          </div>
+        )}
+      </div>
     </div>
   );
 }
diff --git a/components/SpotsMap.tsx b/components/SpotsMap.tsx
new file mode 100644
index 0000000..1e96226
--- /dev/null
+++ b/components/SpotsMap.tsx
@@ -0,0 +1,139 @@
+"use client";
+
+import { useEffect, useRef } from "react";
+import L from "leaflet";
+import "leaflet/dist/leaflet.css";
+import type { FoodSpotLog } from "@/app/db";
+
+interface SpotsMapProps {
+  spots: FoodSpotLog[];
+}
+
+const createCustomIcon = (spot: FoodSpotLog) => {
+  const categoryColor = spot.category === "Cafe" ? "var(--category-cafe)" : "var(--category-restaurant)";
+
+  const htmlContent = `
+    <div style="
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      width: 32px;
+      height: 32px;
+      border-radius: 50%;
+      background-color: ${categoryColor};
+      border: 2px solid white;
+      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.15), var(--neu-shadow-subtle);
+      color: white;
+      font-family: var(--font-space-mono), monospace;
+      font-weight: bold;
+      font-size: 11px;
+      position: relative;
+    ">
+      ${spot.rating}
+      <div style="
+        position: absolute;
+        bottom: -6px;
+        left: 50%;
+        transform: translateX(-50%);
+        width: 0;
+        height: 0;
+        border-left: 5px solid transparent;
+        border-right: 5px solid transparent;
+        border-top: 6px solid ${categoryColor};
+      "></div>
+    </div>
+  `;
+
+  return L.divIcon({
+    html: htmlContent,
+    className: "custom-leaflet-marker",
+    iconSize: [32, 38],
+    iconAnchor: [16, 38],
+    popupAnchor: [0, -38]
+  });
+};
+
+export default function SpotsMap({ spots }: SpotsMapProps) {
+  const mapContainerRef = useRef<HTMLDivElement>(null);
+  const mapRef = useRef<L.Map | null>(null);
+
+  useEffect(() => {
+    if (!mapContainerRef.current) return;
+
+    // Initialize map
+    const map = L.map(mapContainerRef.current, {
+      zoomControl: true,
+    });
+    mapRef.current = map;
+
+    // Add TileLayer with OpenStreetMap (OSM)
+    L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
+      attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
+    }).addTo(map);
+
+    // Filter spots with coordinates
+    const validSpots = spots.filter(
+      (s) => s.latitude !== undefined && s.longitude !== undefined
+    ) as (FoodSpotLog & { latitude: number; longitude: number })[];
+
+    const markers: L.Marker[] = [];
+
+    validSpots.forEach((spot) => {
+      const popupContent = `
+        <div style="display: flex; flex-direction: column; gap: 8px; width: 140px; font-family: var(--font-work-sans), sans-serif; padding: 2px;">
+          ${spot.thumbnail
+          ? `<div style="width: 100%; height: 80px; overflow: hidden; border-radius: 8px;">
+                   <img src="${spot.thumbnail}" alt="${spot.name}" style="width: 100%; height: 100%; object-fit: cover;" />
+                 </div>`
+          : `<div style="width: 100%; height: 48px; background: rgba(0,0,0,0.05); display: flex; align-items: center; justify-content: center; font-size: 24px; border-radius: 8px;">
+                   ${spot.category === "Cafe" ? "☕" : "🍽️"}
+                 </div>`
+        }
+          <div style="display: flex; flex-direction: column; gap: 2px;">
+            <h3 style="font-family: var(--font-fraunces), Georgia, serif; font-weight: bold; font-size: 14px; margin: 0; color: var(--text-primary); text-overflow: ellipsis; overflow: hidden; white-space: nowrap;">${spot.name}</h3>
+            <div style="display: flex; align-items: center; gap: 6px; margin-top: 4px;">
+              <span style="font-family: var(--font-space-mono), monospace; font-size: 10px; font-weight: bold; color: var(--accent); background: rgba(107, 93, 79, 0.05); padding: 2px 6px; border-radius: 4px;">${spot.rating} / 10</span>
+              <span style="font-size: 9px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px;">${spot.category}</span>
+            </div>
+          </div>
+        </div>
+      `;
+
+      const marker = L.marker([spot.latitude, spot.longitude], {
+        icon: createCustomIcon(spot),
+      })
+        .bindPopup(popupContent, {
+          maxWidth: 200,
+          minWidth: 140,
+        })
+        .addTo(map);
+
+      markers.push(marker);
+    });
+
+    // Fit bounds or center
+    if (validSpots.length > 0) {
+      if (validSpots.length === 1) {
+        map.setView([validSpots[0].latitude, validSpots[0].longitude], 15);
+      } else {
+        const bounds = L.latLngBounds(validSpots.map((s) => [s.latitude, s.longitude]));
+        map.fitBounds(bounds, { padding: [40, 40] });
+      }
+    } else {
+      map.setView([0, 0], 2);
+    }
+
+    return () => {
+      map.remove();
+      mapRef.current = null;
+    };
+  }, [spots]);
+
+  return (
+    <div
+      ref={mapContainerRef}
+      className="w-full h-full rounded-2xl overflow-hidden shadow-neu-inset border border-text-secondary/10"
+      style={{ minHeight: "450px" }}
+    />
+  );
+}
diff --git a/lib/auth.tsx b/lib/auth.tsx
new file mode 100644
index 0000000..dab5695
--- /dev/null
+++ b/lib/auth.tsx
@@ -0,0 +1,326 @@
+"use client";
+
+import {
+  createContext,
+  useContext,
+  useEffect,
+  useState,
+  useCallback,
+  useRef,
+  type ReactNode,
+} from "react";
+import {
+  onAuthStateChanged,
+  signInWithCustomToken,
+  signOut as firebaseSignOut,
+  type User,
+} from "firebase/auth";
+import {
+  signIn as nextAuthSignIn,
+  signOut as nextAuthSignOut,
+  useSession,
+  SessionProvider,
+} from "next-auth/react";
+import { getFirebaseAuth } from "./firebase";
+import { useToast } from "./toast";
+
+/* ------------------------------------------------------------------ */
+/*  Types                                                              */
+/* ------------------------------------------------------------------ */
+
+export interface QuickLoginAccount {
+  uid: string;
+  displayName: string | null;
+  email: string | null;
+  photoURL: string | null;
+  lastLoginAt: number;
+}
+
+/** Lightweight cached session stored in localStorage for instant offline access. */
+export interface CachedSession {
+  uid: string;
+  displayName: string | null;
+  email: string | null;
+  photoURL: string | null;
+}
+
+interface AuthContextValue {
+  user: User | null;
+  loading: boolean;
+  signInWithGoogle: (email?: string) => Promise<void>;
+  signOut: () => Promise<void>;
+  quickLoginAccounts: QuickLoginAccount[];
+  /** Cached session from localStorage — available instantly, even offline. */
+  cachedSession: CachedSession | null;
+}
+
+const QUICK_LOGIN_KEY = "keepcheck-quick-login";
+const SESSION_CACHE_KEY = "keepcheck-session";
+const MAX_QUICK_LOGIN = 5;
+
+/* ------------------------------------------------------------------ */
+/*  Session cache helpers                                              */
+/* ------------------------------------------------------------------ */
+
+function loadCachedSession(): CachedSession | null {
+  try {
+    const raw = localStorage.getItem(SESSION_CACHE_KEY);
+    if (!raw) return null;
+    const parsed = JSON.parse(raw);
+    if (parsed && typeof parsed.uid === "string") return parsed as CachedSession;
+    return null;
+  } catch {
+    return null;
+  }
+}
+
+function saveCachedSession(user: User): void {
+  try {
+    const session: CachedSession = {
+      uid: user.uid,
+      displayName: user.displayName,
+      email: user.email,
+      photoURL: user.photoURL,
+    };
+    localStorage.setItem(SESSION_CACHE_KEY, JSON.stringify(session));
+  } catch {
+    /* storage full — best effort */
+  }
+}
+
+function clearCachedSession(): void {
+  try {
+    localStorage.removeItem(SESSION_CACHE_KEY);
+  } catch {
+    /* ignore */
+  }
+}
+
+/* ------------------------------------------------------------------ */
+/*  Context                                                            */
+/* ------------------------------------------------------------------ */
+
+const AuthContext = createContext<AuthContextValue | null>(null);
+
+/* ------------------------------------------------------------------ */
+/*  Provider (outer shell)                                             */
+/*                                                                     */
+/*  SessionProvider must wrap AuthProviderInner so that useSession()   */
+/*  inside AuthProviderInner is a valid descendant of the provider.    */
+/*  A component cannot render SessionProvider and also call            */
+/*  useSession() in the same function body — React context requires    */
+/*  the consumer to be a child in the tree.                            */
+/* ------------------------------------------------------------------ */
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  return (
+    <SessionProvider>
+      <AuthProviderInner>{children}</AuthProviderInner>
+    </SessionProvider>
+  );
+}
+
+/* ------------------------------------------------------------------ */
+/*  Provider (inner — has access to useSession)                        */
+/* ------------------------------------------------------------------ */
+
+function AuthProviderInner({ children }: { children: ReactNode }) {
+  const { data: nextAuthSession, status: nextAuthStatus } = useSession();
+  const { showToast } = useToast();
+
+  const [user, setUser] = useState<User | null>(null);
+  const [firebaseLoading, setFirebaseLoading] = useState(true);
+  const [bridgeError, setBridgeError] = useState<string | null>(null);
+  const [quickLoginAccounts, setQuickLoginAccounts] = useState<
+    QuickLoginAccount[]
+  >([]);
+  const [cachedSession, setCachedSession] = useState<CachedSession | null>(null);
+
+  // Guard to prevent repeating welcome toast
+  const prevUserRef = useRef<User | null>(null);
+
+  // ---- Ref guard: prevent duplicate token-bridge calls ----
+  // Similar to the old redirectHandled ref — ensures the POST to
+  // /api/firebase-token fires at most once per session lifecycle,
+  // even if the effect re-runs before Firebase auth state has updated.
+  const tokenBridgeInFlight = useRef(false);
+
+  // Load cached session + quick-login history from localStorage on mount.
+  useEffect(() => {
+    try {
+      const stored = localStorage.getItem(QUICK_LOGIN_KEY);
+      if (stored) setQuickLoginAccounts(JSON.parse(stored));
+    } catch {
+      // Ignore parse errors.
+    }
+
+    // Load cached session for instant offline rendering
+    const cached = loadCachedSession();
+    if (cached) {
+      setCachedSession(cached);
+    }
+  }, []);
+
+  const saveToQuickLogin = useCallback((u: User) => {
+    setQuickLoginAccounts((prev: QuickLoginAccount[]) => {
+      const filtered = prev.filter((a: QuickLoginAccount) => a.uid !== u.uid);
+      const entry: QuickLoginAccount = {
+        uid: u.uid,
+        displayName: u.displayName,
+        email: u.email,
+        photoURL: u.photoURL,
+        lastLoginAt: Date.now(),
+      };
+      const updated = [entry, ...filtered].slice(0, MAX_QUICK_LOGIN);
+
+      try {
+        localStorage.setItem(QUICK_LOGIN_KEY, JSON.stringify(updated));
+      } catch {
+        // Storage full — silently skip.
+      }
+
+      return updated;
+    });
+  }, []);
+
+  // Listen to Firebase auth state.
+  useEffect(() => {
+    const unsubscribe = onAuthStateChanged(getFirebaseAuth(), (firebaseUser) => {
+      if (firebaseUser && !prevUserRef.current) {
+        const name = firebaseUser.displayName ?? firebaseUser.email ?? "User";
+        showToast(`👋 Welcome back, ${name}!`, "success");
+      }
+      prevUserRef.current = firebaseUser;
+
+      setUser(firebaseUser);
+      setFirebaseLoading(false);
+
+      if (firebaseUser) {
+        saveToQuickLogin(firebaseUser);
+        // Persist session for offline access
+        saveCachedSession(firebaseUser);
+        setCachedSession({
+          uid: firebaseUser.uid,
+          displayName: firebaseUser.displayName,
+          email: firebaseUser.email,
+          photoURL: firebaseUser.photoURL,
+        });
+      }
+    });
+    return unsubscribe;
+  }, [saveToQuickLogin, showToast]);
+
+  // ---- NextAuth → Firebase token bridge ----
+  //
+  // When NextAuth has an active session (user authenticated via Google OAuth)
+  // but Firebase doesn't have a user yet, exchange the NextAuth session for a
+  // Firebase custom token. The ref guard prevents duplicate requests.
+  useEffect(() => {
+    // Only proceed when:
+    //  - NextAuth has resolved (not "loading")
+    //  - NextAuth has a session with an email
+    //  - Firebase doesn't have a user yet
+    //  - We haven't already started a bridge request
+    if (
+      nextAuthStatus !== "authenticated" ||
+      !nextAuthSession?.user?.email ||
+      user !== null ||
+      tokenBridgeInFlight.current
+    ) {
+      return;
+    }
+
+    tokenBridgeInFlight.current = true;
+    setBridgeError(null);
+
+    (async () => {
+      try {
+        const res = await fetch("/api/firebase-token", { method: "POST" });
+        if (!res.ok) {
+          const body = await res.text();
+          throw new Error(`Token bridge failed (${res.status}): ${body}`);
+        }
+
+        const { customToken } = await res.json();
+        await signInWithCustomToken(getFirebaseAuth(), customToken);
+        // onAuthStateChanged will pick up the new Firebase user and
+        // trigger saveToQuickLogin + saveCachedSession automatically.
+      } catch (err) {
+        console.error("[KeepCheck] Firebase token bridge error:", err);
+        // Reset the guard so the user can retry (e.g. by refreshing).
+        tokenBridgeInFlight.current = false;
+        setBridgeError(err instanceof Error ? err.message : String(err));
+        showToast("Authentication session error. Please try again.", "error");
+      }
+    })();
+  }, [nextAuthStatus, nextAuthSession, user, showToast]);
+
+  // Sign in with Google via NextAuth's OAuth flow.
+  // NextAuth handles the full OAuth redirect → callback → session lifecycle.
+  const signInWithGoogle = useCallback(async (email?: string) => {
+    // Reset the bridge guard so a fresh sign-in triggers the bridge.
+    tokenBridgeInFlight.current = false;
+    setBridgeError(null);
+    await nextAuthSignIn("google", undefined, email ? { login_hint: email } : undefined);
+  }, []);
+
+  // Sign out of BOTH NextAuth and Firebase.
+  // Uses { redirect: false } for NextAuth so we preserve the existing behavior
+  // of clearing local state instantly without a full page reload/navigation.
+  const signOut = useCallback(async () => {
+    console.log("[KeepCheck AuthContext] signOut called");
+    showToast("👋 Signed out successfully", "info");
+
+    try {
+      // 1. Sign out of NextAuth without redirecting — explicitly set { redirect: false }
+      // so it does NOT perform a full page reload redirect, avoiding races against Firebase's signOut.
+      await nextAuthSignOut({ redirect: false });
+      console.log("[KeepCheck AuthContext] NextAuth signOut completed successfully");
+    } catch (error) {
+      console.error("[KeepCheck AuthContext] NextAuth signOut error:", error);
+    }
+
+    try {
+      // 2. Sign out of Firebase
+      await firebaseSignOut(getFirebaseAuth());
+      console.log("[KeepCheck AuthContext] Firebase signOut completed successfully");
+    } catch (error) {
+      console.error("[KeepCheck AuthContext] Firebase signOut error:", error);
+    }
+
+    // 3. Clear cached session and local states only AFTER both operations complete
+    clearCachedSession();
+    setCachedSession(null);
+
+    // Reset bridge guard for next sign-in
+    tokenBridgeInFlight.current = false;
+    setBridgeError(null);
+
+    // Set user to null to trigger AuthGuard redirect
+    console.log("[KeepCheck AuthContext] Setting user to null");
+    setUser(null);
+  }, [showToast]);
+
+  const loading =
+    firebaseLoading ||
+    nextAuthStatus === "loading" ||
+    (nextAuthStatus === "authenticated" && !user && !bridgeError);
+
+  return (
+    <AuthContext.Provider
+      value={{ user, loading, signInWithGoogle, signOut, quickLoginAccounts, cachedSession }}
+    >
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+/* ------------------------------------------------------------------ */
+/*  Hook                                                               */
+/* ------------------------------------------------------------------ */
+
+export function useAuth(): AuthContextValue {
+  const ctx = useContext(AuthContext);
+  if (!ctx) throw new Error("useAuth must be used within <AuthProvider>");
+  return ctx;
+}
diff --git a/lib/firebase.ts b/lib/firebase.ts
new file mode 100644
index 0000000..1481cd5
--- /dev/null
+++ b/lib/firebase.ts
@@ -0,0 +1,86 @@
+import { initializeApp, getApps, getApp, type FirebaseApp } from "firebase/app";
+import {
+  getAuth,
+  indexedDBLocalPersistence,
+  browserLocalPersistence,
+  initializeAuth,
+  browserPopupRedirectResolver,
+  type Auth,
+} from "firebase/auth";
+import {
+  getFirestore,
+  initializeFirestore,
+  persistentLocalCache,
+  persistentMultipleTabManager,
+  type Firestore,
+} from "firebase/firestore";
+
+const firebaseConfig = {
+  apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
+  authDomain: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
+  projectId: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
+  storageBucket: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
+  messagingSenderId: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
+  appId: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
+};
+
+// Ensure only one Firebase app is ever initialised (SSR + hot-reload safe).
+function getApp_(): FirebaseApp {
+  return getApps().length ? getApp() : initializeApp(firebaseConfig);
+}
+
+// ---------------------------------------------------------------------------
+// Lazy singletons — initialised on first access so they never run during SSR.
+// ---------------------------------------------------------------------------
+
+let _auth: Auth | null = null;
+let _firestore: Firestore | null = null;
+
+/**
+ * Returns the Firebase Auth singleton.
+ *
+ * Uses IndexedDB persistence (survives offline / PWA restarts).
+ * Falls back to browser localStorage if IndexedDB is unavailable.
+ */
+export function getFirebaseAuth(): Auth {
+  if (_auth) return _auth;
+
+  const app = getApp_();
+
+  try {
+    _auth = initializeAuth(app, {
+      persistence: [indexedDBLocalPersistence, browserLocalPersistence],
+      popupRedirectResolver: browserPopupRedirectResolver,
+    });
+  } catch {
+    // Already initialised (hot-reload) — use existing instance.
+    _auth = getAuth(app);
+  }
+
+  return _auth;
+}
+
+/**
+ * Returns the Firestore singleton with multi-tab offline persistence.
+ */
+export function getFirebaseFirestore(): Firestore {
+  if (_firestore) return _firestore;
+
+  const app = getApp_();
+
+  try {
+    _firestore = initializeFirestore(app, {
+      localCache: persistentLocalCache({
+        tabManager: persistentMultipleTabManager(),
+      }),
+      ignoreUndefinedProperties: true,
+    });
+  } catch {
+    // Already initialised (hot-reload).
+    _firestore = getFirestore(app);
+  }
+
+  return _firestore;
+}
+
+
diff --git a/lib/firebaseAdmin.ts b/lib/firebaseAdmin.ts
new file mode 100644
index 0000000..1b799c6
--- /dev/null
+++ b/lib/firebaseAdmin.ts
@@ -0,0 +1,61 @@
+/**
+ * Firebase Admin SDK — server-only initialisation.
+ *
+ * ⚠️  SECURITY:
+ *   • FIREBASE_SERVICE_ACCOUNT_JSON must be set as a server-only env var
+ *     in Vercel (NOT prefixed with NEXT_PUBLIC_).
+ *   • Never commit the service account JSON to source control.
+ *   • Never log the full key — at most log the client_email for debugging.
+ *
+ * This module must NEVER be imported from client code. It runs only on the
+ * server (Route Handlers, Server Components, Server Actions).
+ */
+
+import { initializeApp, getApps, cert, type App } from "firebase-admin/app";
+import { getAuth, type Auth } from "firebase-admin/auth";
+
+let _adminApp: App | null = null;
+
+function getAdminApp(): App {
+  if (_adminApp) return _adminApp;
+
+  // Already initialised (hot-reload safety)
+  if (getApps().length > 0) {
+    _adminApp = getApps()[0];
+    return _adminApp;
+  }
+
+  const serviceAccountJSON = process.env.FIREBASE_SERVICE_ACCOUNT_JSON;
+  if (!serviceAccountJSON) {
+    throw new Error(
+      "[firebaseAdmin] FIREBASE_SERVICE_ACCOUNT_JSON env var is missing. " +
+        "Set it in Vercel → Settings → Environment Variables (server-only, NOT NEXT_PUBLIC_)."
+    );
+  }
+
+  let serviceAccount: Record<string, string>;
+  try {
+    serviceAccount = JSON.parse(serviceAccountJSON);
+  } catch {
+    throw new Error(
+      "[firebaseAdmin] FIREBASE_SERVICE_ACCOUNT_JSON is not valid JSON. " +
+        "Paste the entire contents of the downloaded service account key file."
+    );
+  }
+
+  _adminApp = initializeApp({
+    credential: cert(serviceAccount),
+  });
+
+  // Log only the client_email for deploy debugging — never the full key.
+  console.log(
+    `[firebaseAdmin] Admin SDK initialised for ${serviceAccount.client_email ?? "unknown"}`
+  );
+
+  return _adminApp;
+}
+
+/** Returns the Firebase Admin Auth instance (server-only). */
+export function getAdminAuth(): Auth {
+  return getAuth(getAdminApp());
+}
diff --git a/lib/firestore.ts b/lib/firestore.ts
new file mode 100644
index 0000000..699fabe
--- /dev/null
+++ b/lib/firestore.ts
@@ -0,0 +1,155 @@
+import {
+  collection,
+  doc,
+  setDoc,
+  deleteDoc,
+  getDocs,
+  query,
+  orderBy,
+  onSnapshot,
+  addDoc,
+  type Unsubscribe,
+} from "firebase/firestore";
+import { getFirebaseFirestore } from "./firebase";
+import type { FoodSpotLog } from "@/app/db";
+
+/* ------------------------------------------------------------------ */
+/*  Path helpers                                                       */
+/* ------------------------------------------------------------------ */
+
+function spotsCol(uid: string) {
+  return collection(getFirebaseFirestore(), "users", uid, "spots");
+}
+
+/* ------------------------------------------------------------------ */
+/*  Spots                                                              */
+/* ------------------------------------------------------------------ */
+
+/** Pre-generate a Firestore document ID without writing anything. */
+export function generateSpotId(uid: string): string {
+  return doc(spotsCol(uid)).id;
+}
+
+/** Write a spot to Firestore using a pre-generated ID. */
+export async function writeSpotToFirestore(
+  uid: string,
+  firebaseId: string,
+  spot: Omit<FoodSpotLog, "id" | "firebaseId" | "userId">,
+): Promise<void> {
+  const docRef = doc(getFirebaseFirestore(), "users", uid, "spots", firebaseId);
+  
+  // Clean undefined properties to prevent Firestore error
+  const cleanedSpot = Object.fromEntries(
+    Object.entries(spot).filter(([_, v]) => v !== undefined)
+  );
+
+  await setDoc(docRef, {
+    ...cleanedSpot,
+    userId: uid,
+  });
+}
+
+/** Delete a spot from Firestore by its document ID. */
+export async function deleteSpotFromFirestore(
+  uid: string,
+  firebaseId: string,
+): Promise<void> {
+  await deleteDoc(doc(getFirebaseFirestore(), "users", uid, "spots", firebaseId));
+}
+
+/** Fetch all spots for a user (one-shot). */
+export async function fetchSpotsFromFirestore(
+  uid: string,
+): Promise<(FoodSpotLog & { firebaseId: string })[]> {
+  const q = query(spotsCol(uid), orderBy("createdAt", "desc"));
+  const snapshot = await getDocs(q);
+  return snapshot.docs.map((d) => ({
+    ...(d.data() as Omit<FoodSpotLog, "id" | "firebaseId">),
+    firebaseId: d.id,
+  }));
+}
+
+export interface FirestoreSpotChange {
+  type: "added" | "modified" | "removed";
+  spot: FoodSpotLog & { firebaseId: string };
+}
+
+/** Subscribe to real-time spot updates. Returns an unsubscribe function. */
+export function subscribeToSpots(
+  uid: string,
+  callback: (changes: FirestoreSpotChange[]) => void,
+): Unsubscribe {
+  const q = query(spotsCol(uid), orderBy("createdAt", "desc"));
+  return onSnapshot(q, (snapshot) => {
+    const changes = snapshot.docChanges().map((change) => ({
+      type: change.type,
+      spot: {
+        ...(change.doc.data() as Omit<FoodSpotLog, "id" | "firebaseId">),
+        firebaseId: change.doc.id,
+      },
+    }));
+    callback(changes);
+  });
+}
+
+/* ------------------------------------------------------------------ */
+/*  Images                                                             */
+/* ------------------------------------------------------------------ */
+
+function imagesCol(uid: string) {
+  return collection(getFirebaseFirestore(), "users", uid, "images");
+}
+
+/**
+ * Add an image to Firestore.
+ *
+ * NOTE: We store the image as a base64 string (NOT a Blob) because
+ * Firestore doesn't natively support Blob storage. The images are
+ * already compressed JPEGs < 1 MB from the image utility pipeline.
+ */
+export async function addImageToFirestore(
+  uid: string,
+  image: {
+    spotFirebaseId: string;
+    base64: string;
+    createdAt: number;
+  },
+): Promise<string> {
+  const docRef = await addDoc(imagesCol(uid), {
+    spotFirebaseId: image.spotFirebaseId,
+    base64: image.base64,
+    createdAt: image.createdAt,
+    userId: uid,
+  });
+  return docRef.id;
+}
+
+/** Delete all images for a spot from Firestore. */
+export async function deleteImagesForSpotFromFirestore(
+  uid: string,
+  spotFirebaseId: string,
+): Promise<void> {
+  const q = query(imagesCol(uid));
+  const snapshot = await getDocs(q);
+  const deleteOps = snapshot.docs
+    .filter((d) => d.data().spotFirebaseId === spotFirebaseId)
+    .map((d) => deleteDoc(d.ref));
+  await Promise.all(deleteOps);
+}
+
+/** Subscribe to real-time image updates. Returns an unsubscribe function. */
+export function subscribeToImages(
+  uid: string,
+  callback: (images: { firebaseId: string; spotFirebaseId: string; base64: string; createdAt: number }[]) => void,
+): Unsubscribe {
+  const q = query(imagesCol(uid), orderBy("createdAt", "desc"));
+  return onSnapshot(q, (snapshot) => {
+    const images = snapshot.docs.map((d) => ({
+      firebaseId: d.id,
+      spotFirebaseId: d.data().spotFirebaseId as string,
+      base64: d.data().base64 as string,
+      createdAt: d.data().createdAt as number,
+    }));
+    callback(images);
+  });
+}
diff --git a/lib/offlineSync.ts b/lib/offlineSync.ts
new file mode 100644
index 0000000..84e18a8
--- /dev/null
+++ b/lib/offlineSync.ts
@@ -0,0 +1,275 @@
+/**
+ * Offline Sync Manager
+ *
+ * Coordinates syncing of locally-saved spots to Firestore when the device
+ * comes back online. Works in tandem with Dexie (local DB) and Firestore.
+ *
+ * Strategy:
+ *  1. When a spot is saved, it's ALWAYS written to Dexie first (instant).
+ *  2. The Firestore write is attempted in the background (non-blocking).
+ *  3. If the Firestore write fails (offline / network error), the spot's
+ *     `pendingSync` flag stays `true` in Dexie.
+ *  4. When the browser fires the `online` event, we sweep Dexie for any
+ *     `pendingSync === true` rows and retry their Firestore writes.
+ *  5. On success, `pendingSync` is cleared.
+ *
+ * For deletes that fail while offline, we queue them in localStorage
+ * under a `keepcheck-pending-deletes` key and retry on reconnect.
+ */
+
+import { db, type FoodSpotLog } from "@/app/db";
+import {
+  writeSpotToFirestore,
+  deleteSpotFromFirestore,
+  addImageToFirestore,
+  deleteImagesForSpotFromFirestore,
+} from "./firestore";
+import { compressBlobToSafeBase64 } from "@/utils/image";
+
+/* ------------------------------------------------------------------ */
+/*  Pending-delete queue (localStorage-backed)                         */
+/* ------------------------------------------------------------------ */
+
+export interface PendingDelete {
+  uid: string;
+  firebaseId: string;
+}
+
+const PENDING_DELETES_KEY = "keepcheck-pending-deletes";
+
+export function getPendingDeletes(): PendingDelete[] {
+  try {
+    const raw = localStorage.getItem(PENDING_DELETES_KEY);
+    return raw ? JSON.parse(raw) : [];
+  } catch {
+    return [];
+  }
+}
+
+function savePendingDeletes(deletes: PendingDelete[]): void {
+  try {
+    localStorage.setItem(PENDING_DELETES_KEY, JSON.stringify(deletes));
+  } catch {
+    /* storage full — best effort */
+  }
+}
+
+export function queuePendingDelete(uid: string, firebaseId: string): void {
+  const current = getPendingDeletes();
+  // Dedupe
+  if (!current.some((d) => d.uid === uid && d.firebaseId === firebaseId)) {
+    current.push({ uid, firebaseId });
+    savePendingDeletes(current);
+  }
+}
+
+/* ------------------------------------------------------------------ */
+/*  Sync a single spot to Firestore                                    */
+/* ------------------------------------------------------------------ */
+
+/**
+ * Attempt to sync a single pending spot to Firestore.
+ * Returns `true` if successful, `false` if it should be retried later.
+ *
+ * Pre-checks `navigator.onLine` to avoid unnecessary Firestore errors
+ * when clearly offline.
+ */
+export async function syncSpotToFirestore(
+  uid: string,
+  spot: FoodSpotLog,
+): Promise<boolean> {
+  if (!spot.firebaseId) return false;
+
+  // Skip if we're clearly offline — saves error noise and CPU
+  if (typeof navigator !== "undefined" && !navigator.onLine) {
+    return false;
+  }
+
+  try {
+    // If there's a local image for this spot, sync it too
+    if (spot.id !== undefined) {
+      const image = await db.images.where("spotId").equals(spot.id).first();
+      // Sync if it exists and hasn't been uploaded to Firestore yet
+      if (image && (!image.firebaseId || image.firebaseId === "uploaded")) {
+        try {
+          const base64 = await compressBlobToSafeBase64(image.blob);
+          if (base64) {
+            const imgFirebaseId = await addImageToFirestore(uid, {
+              spotFirebaseId: spot.firebaseId,
+              base64,
+              createdAt: image.createdAt,
+            });
+            // Mark image as synced locally
+            await db.images.update(image.id!, { firebaseId: imgFirebaseId });
+          } else {
+            console.warn("[OfflineSync] compressBlobToSafeBase64 returned null (too large). Skipping image Firestore upload, keeping only local photo.");
+          }
+        } catch (imgErr) {
+          console.warn("[OfflineSync] Image sync failed, will retry:", imgErr);
+          // Don't fail the whole spot sync for an image failure
+        }
+      }
+    }
+
+    // Write the spot document
+    await writeSpotToFirestore(uid, spot.firebaseId, {
+      name: spot.name,
+      category: spot.category,
+      rating: spot.rating,
+      comment: spot.comment,
+      createdAt: spot.createdAt,
+      thumbnail: spot.thumbnail,
+      latitude: spot.latitude,
+      longitude: spot.longitude,
+    });
+
+    // Mark spot as synced
+    if (spot.id !== undefined) {
+      await db.spots.update(spot.id, { pendingSync: false });
+    }
+
+    console.log(`[OfflineSync] ✓ Synced spot "${spot.name}" (${spot.firebaseId})`);
+    return true;
+  } catch (err) {
+    console.warn(`[OfflineSync] ✗ Sync failed for "${spot.name}":`, err);
+    return false;
+  }
+}
+
+/* ------------------------------------------------------------------ */
+/*  Sweep: retry ALL pending spots + deletes                           */
+/* ------------------------------------------------------------------ */
+
+let _sweepInProgress = false;
+
+/**
+ * Retry all pending spots and deletes. De-duped so only one sweep
+ * runs at a time. Each item is wrapped in its own try/catch so one
+ * failure doesn't block the rest.
+ */
+export async function sweepPendingSync(uid: string): Promise<number> {
+  if (_sweepInProgress) return 0;
+
+  // Don't even attempt if clearly offline
+  if (typeof navigator !== "undefined" && !navigator.onLine) return 0;
+
+  _sweepInProgress = true;
+
+  let synced = 0;
+
+  try {
+    // 1. Sync pending spots
+    const pendingSpots = await db.spots
+      .where("pendingSync")
+      .equals(1) // Dexie stores booleans as 0/1 in indexes
+      .toArray();
+
+    // Also check for `true` value (non-indexed fallback)
+    const allUserSpots = await db.spots.where("userId").equals(uid).toArray();
+    const pending = allUserSpots.filter((s) => s.pendingSync === true);
+
+    // Merge & dedupe
+    const spotsToSync = new Map<number, FoodSpotLog>();
+    for (const s of [...pendingSpots, ...pending]) {
+      if (s.id !== undefined) spotsToSync.set(s.id, s);
+    }
+
+    for (const spot of spotsToSync.values()) {
+      try {
+        const ok = await syncSpotToFirestore(uid, spot);
+        if (ok) synced++;
+      } catch (spotErr) {
+        // Per-item catch: don't let one failure block the rest
+        console.warn(`[OfflineSync] Per-item sync error for "${spot.name}":`, spotErr);
+      }
+    }
+
+    // 2. Retry pending deletes
+    const deletes = getPendingDeletes();
+    const remaining: PendingDelete[] = [];
+
+    for (const del of deletes) {
+      if (del.uid !== uid) {
+        remaining.push(del);
+        continue;
+      }
+      try {
+        await deleteImagesForSpotFromFirestore(del.uid, del.firebaseId);
+        await deleteSpotFromFirestore(del.uid, del.firebaseId);
+        console.log(`[OfflineSync] ✓ Deleted spot ${del.firebaseId} from Firestore`);
+      } catch {
+        remaining.push(del);
+      }
+    }
+
+    savePendingDeletes(remaining);
+
+    if (synced > 0) {
+      console.log(`[OfflineSync] Sweep complete: ${synced} spot(s) synced.`);
+    }
+  } finally {
+    _sweepInProgress = false;
+  }
+
+  return synced;
+}
+
+/* ------------------------------------------------------------------ */
+/*  Online/offline event wiring                                        */
+/* ------------------------------------------------------------------ */
+
+type OnlineStatusCallback = (online: boolean) => void;
+type SyncCompleteCallback = (syncedCount: number) => void;
+
+let _cleanupFn: (() => void) | null = null;
+
+/**
+ * Start listening for online/offline events.
+ * When the browser comes back online, automatically sweep pending syncs.
+ *
+ * Returns a cleanup function to remove event listeners.
+ */
+export function startOnlineListener(
+  uid: string,
+  onStatusChange?: OnlineStatusCallback,
+  onSyncComplete?: SyncCompleteCallback,
+): () => void {
+  // Clean up previous listener if any
+  if (_cleanupFn) _cleanupFn();
+
+  const handleOnline = async () => {
+    console.log("[OfflineSync] 🌐 Back online — sweeping pending syncs…");
+    onStatusChange?.(true);
+
+    // Small delay to let network stabilize
+    await new Promise((r) => setTimeout(r, 1500));
+
+    const synced = await sweepPendingSync(uid);
+    onSyncComplete?.(synced);
+  };
+
+  const handleOffline = () => {
+    console.log("[OfflineSync] 📡 Gone offline");
+    onStatusChange?.(false);
+  };
+
+  window.addEventListener("online", handleOnline);
+  window.addEventListener("offline", handleOffline);
+
+  // Fire initial status
+  onStatusChange?.(navigator.onLine);
+
+  // If we're online on mount, do a sweep in case there are stale pending items
+  if (navigator.onLine) {
+    sweepPendingSync(uid).then((synced) => {
+      if (synced > 0) onSyncComplete?.(synced);
+    });
+  }
+
+  _cleanupFn = () => {
+    window.removeEventListener("online", handleOnline);
+    window.removeEventListener("offline", handleOffline);
+  };
+
+  return _cleanupFn;
+}
diff --git a/lib/toast.tsx b/lib/toast.tsx
new file mode 100644
index 0000000..2fe4ec0
--- /dev/null
+++ b/lib/toast.tsx
@@ -0,0 +1,101 @@
+"use client";
+
+import {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  type ReactNode,
+} from "react";
+import { Trash2, AlertTriangle, Info, CheckCircle2, X } from "lucide-react";
+
+export type ToastType = "success" | "delete" | "info" | "error";
+
+export interface ToastMessage {
+  id: number;
+  message: string;
+  type: ToastType;
+  icon?: string;
+}
+
+interface ToastContextValue {
+  showToast: (message: string, type?: ToastType, icon?: string) => void;
+}
+
+const ToastContext = createContext<ToastContextValue | null>(null);
+
+export function ToastProvider({ children }: { children: ReactNode }) {
+  const [toasts, setToasts] = useState<ToastMessage[]>([]);
+
+  const showToast = useCallback(
+    (message: string, type: ToastType = "success", icon?: string) => {
+      const id = Date.now() + Math.random();
+      const newToast: ToastMessage = { id, message, type, icon };
+
+      setToasts((prev) => [...prev.slice(-2), newToast]); // Keep max 3 visible
+
+      setTimeout(() => {
+        setToasts((prev) => prev.filter((t) => t.id !== id));
+      }, 3500);
+    },
+    []
+  );
+
+  const removeToast = useCallback((id: number) => {
+    setToasts((prev) => prev.filter((t) => t.id !== id));
+  }, []);
+
+  return (
+    <ToastContext.Provider value={{ showToast }}>
+      {children}
+      {/* Toast Notification Container */}
+      <div className="fixed top-4 left-1/2 -translate-x-1/2 z-[9999] flex flex-col items-center gap-2 max-w-sm sm:max-w-md w-full px-4 pointer-events-none">
+        {toasts.map((toast) => (
+          <div
+            key={toast.id}
+            className={`pointer-events-auto flex items-center gap-3 px-5 py-3 rounded-2xl text-xs sm:text-sm font-semibold shadow-neu-raised backdrop-blur-md animate-page-enter transition-all w-full border ${
+              toast.type === "success"
+                ? "bg-bg/95 border-category-cafe/40 text-text-primary"
+                : toast.type === "delete"
+                ? "bg-bg/95 border-red-500/30 text-red-500"
+                : toast.type === "error"
+                ? "bg-bg/95 border-red-500/40 text-red-500"
+                : "bg-bg/95 border-accent/40 text-text-primary"
+            }`}
+          >
+            {toast.icon ? (
+              <span className="text-base">{toast.icon}</span>
+            ) : toast.type === "delete" ? (
+              <Trash2 className="h-4 w-4 text-red-500 shrink-0" />
+            ) : toast.type === "error" ? (
+              <AlertTriangle className="h-4 w-4 text-red-500 shrink-0" />
+            ) : toast.type === "info" ? (
+              <Info className="h-4 w-4 text-accent shrink-0" />
+            ) : (
+              <CheckCircle2 className="h-4 w-4 text-category-cafe shrink-0" />
+            )}
+            <span className="flex-1 truncate">{toast.message}</span>
+            <button
+              type="button"
+              onClick={() => removeToast(toast.id)}
+              className="text-text-secondary/50 hover:text-text-primary cursor-pointer p-0.5 shrink-0"
+              aria-label="Dismiss notification"
+            >
+              <X className="h-3.5 w-3.5" />
+            </button>
+          </div>
+        ))}
+      </div>
+    </ToastContext.Provider>
+  );
+}
+
+export function useToast(): ToastContextValue {
+  const ctx = useContext(ToastContext);
+  if (!ctx) {
+    return {
+      showToast: (msg) => console.log("[Toast fallback]:", msg),
+    };
+  }
+  return ctx;
+}
diff --git a/next.config.ts b/next.config.ts
index e6f039f..5664ed6 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -17,6 +17,7 @@ const withSerwist = withSerwistInit({
 
 const nextConfig: NextConfig = {
   /* config options here */
+  serverExternalPackages: ["firebase-admin", "google-auth-library", "gaxios", "gcp-metadata", "jose", "jwks-rsa"],
 };
 
 export default withSerwist(nextConfig);
diff --git a/package-lock.json b/package-lock.json
index e6a6364..5b0b094 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,16 +11,22 @@
         "@serwist/next": "^9.5.11",
         "dexie": "^4.4.4",
         "dexie-react-hooks": "^4.4.0",
+        "firebase": "^12.16.0",
+        "firebase-admin": "^14.1.0",
+        "gsap": "^3.15.0",
+        "leaflet": "^1.9.4",
         "lucide-react": "^1.24.0",
         "next": "16.2.10",
+        "next-auth": "^5.0.0-beta.31",
         "react": "19.2.4",
         "react-dom": "19.2.4",
         "serwist": "^9.5.11"
       },
       "devDependencies": {
         "@tailwindcss/postcss": "^4",
+        "@types/leaflet": "^1.9.21",
         "@types/node": "^20",
-        "@types/react": "^19",
+        "@types/react": "^19.2.17",
         "@types/react-dom": "^19",
         "eslint": "^9",
         "eslint-config-next": "16.2.10",
@@ -41,6 +47,35 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/@auth/core": {
+      "version": "0.41.2",
+      "resolved": "https://registry.npmjs.org/@auth/core/-/core-0.41.2.tgz",
+      "integrity": "sha512-Hx5MNBxN2fJTbJKGUKAA0wca43D0Akl3TvufY54Gn8lop7F+34vU1zA1pn0vQfIoVuLIrpfc2nkyjwIaPJMW7w==",
+      "license": "ISC",
+      "dependencies": {
+        "@panva/hkdf": "^1.2.1",
+        "jose": "^6.0.6",
+        "oauth4webapi": "^3.3.0",
+        "preact": "10.24.3",
+        "preact-render-to-string": "6.5.11"
+      },
+      "peerDependencies": {
+        "@simplewebauthn/browser": "^9.0.1",
+        "@simplewebauthn/server": "^9.0.2",
+        "nodemailer": "^7.0.7"
+      },
+      "peerDependenciesMeta": {
+        "@simplewebauthn/browser": {
+          "optional": true
+        },
+        "@simplewebauthn/server": {
+          "optional": true
+        },
+        "nodemailer": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.29.7",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.7.tgz",
@@ -97,6 +132,16 @@
         "url": "https://opencollective.com/babel"
       }
     },
+    "node_modules/@babel/core/node_modules/semver": {
+      "version": "6.3.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
+      "integrity": "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      }
+    },
     "node_modules/@babel/generator": {
       "version": "7.29.7",
       "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.29.7.tgz",
@@ -131,6 +176,16 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@babel/helper-compilation-targets/node_modules/semver": {
+      "version": "6.3.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
+      "integrity": "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      }
+    },
     "node_modules/@babel/helper-globals": {
       "version": "7.29.7",
       "resolved": "https://registry.npmjs.org/@babel/helper-globals/-/helper-globals-7.29.7.tgz",
@@ -458,213 +513,982 @@
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
-    "node_modules/@humanfs/core": {
-      "version": "0.19.2",
-      "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.2.tgz",
-      "integrity": "sha512-UhXNm+CFMWcbChXywFwkmhqjs3PRCmcSa/hfBgLIb7oQ5HNb1wS0icWsGtSAUNgefHeI+eBrA8I1fxmbHsGdvA==",
-      "dev": true,
+    "node_modules/@fastify/busboy": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-3.2.0.tgz",
+      "integrity": "sha512-m9FVDXU3GT2ITSe0UaMA5rU3QkfC/UXtCU8y0gSN/GugTqtVldOBWIB5V6V3sbmenVZUIpU6f+mPEO2+m5iTaA==",
+      "license": "MIT"
+    },
+    "node_modules/@firebase/ai": {
+      "version": "2.13.1",
+      "resolved": "https://registry.npmjs.org/@firebase/ai/-/ai-2.13.1.tgz",
+      "integrity": "sha512-RhT/VViTPBSplhQSuEp62HhLvfsV+LowMh8ZUo5MMRDzG7oFtSget4Kmg5oHP50hDVyWQuQj6to9iPFEZk08Tw==",
       "license": "Apache-2.0",
       "dependencies": {
-        "@humanfs/types": "^0.15.0"
+        "@firebase/app-check-interop-types": "0.3.4",
+        "@firebase/component": "0.7.3",
+        "@firebase/logger": "0.5.1",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
       },
       "engines": {
-        "node": ">=18.18.0"
+        "node": ">=20.0.0"
+      },
+      "peerDependencies": {
+        "@firebase/app": "0.x",
+        "@firebase/app-types": "0.x"
       }
     },
-    "node_modules/@humanfs/node": {
-      "version": "0.16.8",
-      "resolved": "https://registry.npmjs.org/@humanfs/node/-/node-0.16.8.tgz",
-      "integrity": "sha512-gE1eQNZ3R++kTzFUpdGlpmy8kDZD/MLyHqDwqjkVQI0JMdI1D51sy1H958PNXYkM2rAac7e5/CnIKZrHtPh3BQ==",
-      "dev": true,
+    "node_modules/@firebase/analytics": {
+      "version": "0.10.22",
+      "resolved": "https://registry.npmjs.org/@firebase/analytics/-/analytics-0.10.22.tgz",
+      "integrity": "sha512-8BSaq/QRGU1+xyi8L2PTLTJU7MH9aMA72RQdIxrbhWFauOZY9OXo8f2YDN/972xA8d588tlnNVEQ2Mo69pT9Ow==",
       "license": "Apache-2.0",
       "dependencies": {
-        "@humanfs/core": "^0.19.2",
-        "@humanfs/types": "^0.15.0",
-        "@humanwhocodes/retry": "^0.4.0"
+        "@firebase/component": "0.7.3",
+        "@firebase/installations": "0.6.22",
+        "@firebase/logger": "0.5.1",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
       },
-      "engines": {
-        "node": ">=18.18.0"
+      "peerDependencies": {
+        "@firebase/app": "0.x"
       }
     },
-    "node_modules/@humanfs/types": {
-      "version": "0.15.0",
-      "resolved": "https://registry.npmjs.org/@humanfs/types/-/types-0.15.0.tgz",
-      "integrity": "sha512-ZZ1w0aoQkwuUuC7Yf+7sdeaNfqQiiLcSRbfI08oAxqLtpXQr9AIVX7Ay7HLDuiLYAaFPu8oBYNq/QIi9URHJ3Q==",
-      "dev": true,
+    "node_modules/@firebase/analytics-compat": {
+      "version": "0.2.28",
+      "resolved": "https://registry.npmjs.org/@firebase/analytics-compat/-/analytics-compat-0.2.28.tgz",
+      "integrity": "sha512-lIAlqUUbBu93FJMlQfslryQtBwwzdzvp23ePC6FNgymXk6Ook5v4Uvc0vdutvoIeqmyA3LfP0ZeRFK8+11kOOQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/analytics": "0.10.22",
+        "@firebase/analytics-types": "0.8.4",
+        "@firebase/component": "0.7.3",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
+      },
+      "peerDependencies": {
+        "@firebase/app-compat": "0.x"
+      }
+    },
+    "node_modules/@firebase/analytics-types": {
+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/@firebase/analytics-types/-/analytics-types-0.8.4.tgz",
+      "integrity": "sha512-zQ+XTgkwH6CY/eUSHJRP7e4LxM30RCxlCmob5sy2axs25GE3Ny0XdgpDscMTHHQIGqWkxPXad4w2Mw9sCgT8zQ==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/@firebase/app": {
+      "version": "0.15.1",
+      "resolved": "https://registry.npmjs.org/@firebase/app/-/app-0.15.1.tgz",
+      "integrity": "sha512-iD9+Z5HcPo0Uop5f72/VYMeXwKucBhW7iFrISkJFvQ+lSZikTNgTz0FgAtaaTkAG0pEZSnCymA2Fu49n0rcufQ==",
       "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/component": "0.7.3",
+        "@firebase/logger": "0.5.1",
+        "@firebase/util": "1.15.1",
+        "idb": "7.1.1",
+        "tslib": "^2.1.0"
+      },
       "engines": {
-        "node": ">=18.18.0"
+        "node": ">=20.0.0"
       }
     },
-    "node_modules/@humanwhocodes/module-importer": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/@humanwhocodes/module-importer/-/module-importer-1.0.1.tgz",
-      "integrity": "sha512-bxveV4V8v5Yb4ncFTT3rPSgZBOpCkjfK0y4oVVVJwIuDVBRMDXrPyXRL988i5ap9m9bnyEEjWfm5WkBmtffLfA==",
-      "dev": true,
+    "node_modules/@firebase/app-check": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/@firebase/app-check/-/app-check-0.12.0.tgz",
+      "integrity": "sha512-wMeT6HLWRAuW7Cp/5UjWBGKgjPNxWNOoNf4PRIv0weljoGMZVeqbUY7wNBWTI2/31cX1NlXx8gQruDLsUShB3Q==",
       "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/component": "0.7.3",
+        "@firebase/logger": "0.5.1",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
+      },
       "engines": {
-        "node": ">=12.22"
+        "node": ">=20.0.0"
       },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/nzakas"
+      "peerDependencies": {
+        "@firebase/app": "0.x"
       }
     },
-    "node_modules/@humanwhocodes/retry": {
-      "version": "0.4.3",
-      "resolved": "https://registry.npmjs.org/@humanwhocodes/retry/-/retry-0.4.3.tgz",
-      "integrity": "sha512-bV0Tgo9K4hfPCek+aMAn81RppFKv2ySDQeMoSZuvTASywNTnVJCArCZE2FWqpvIatKu7VMRLWlR1EazvVhDyhQ==",
-      "dev": true,
+    "node_modules/@firebase/app-check-compat": {
+      "version": "0.4.5",
+      "resolved": "https://registry.npmjs.org/@firebase/app-check-compat/-/app-check-compat-0.4.5.tgz",
+      "integrity": "sha512-JI17mVcZs34zO6ZeSCrw4U2iohqy+n6GIzkbmsA+TbVjmvFLkUKt3bs5M+qRBteQm/0IWzqSHYFzEQLzDTQebg==",
       "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/app-check": "0.12.0",
+        "@firebase/app-check-types": "0.5.4",
+        "@firebase/component": "0.7.3",
+        "@firebase/logger": "0.5.1",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
+      },
       "engines": {
-        "node": ">=18.18"
+        "node": ">=20.0.0"
       },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/nzakas"
+      "peerDependencies": {
+        "@firebase/app-compat": "0.x"
       }
     },
-    "node_modules/@img/colour": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/@img/colour/-/colour-1.1.0.tgz",
-      "integrity": "sha512-Td76q7j57o/tLVdgS746cYARfSyxk8iEfRxewL9h4OMzYhbW4TAcppl0mT4eyqXddh6L/jwoM75mo7ixa/pCeQ==",
-      "license": "MIT",
-      "optional": true,
+    "node_modules/@firebase/app-check-interop-types": {
+      "version": "0.3.4",
+      "resolved": "https://registry.npmjs.org/@firebase/app-check-interop-types/-/app-check-interop-types-0.3.4.tgz",
+      "integrity": "sha512-zz3i6e13B8BfWiLy8MABtTh8aGIACgKbf9UVnyHcWs+yQzJXgQcl8A46b0zfaiJHdQ+niF0ouAfcpuf+3LMPQg==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/@firebase/app-check-types": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/@firebase/app-check-types/-/app-check-types-0.5.4.tgz",
+      "integrity": "sha512-xV7JsIyzVr15aA7f3Pi0rB9gdBuVubs89FGA8VkRYA4g0l78poADgdfrScgf7NndSg9mm7cR7PJyY0+t22KaGw==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/@firebase/app-compat": {
+      "version": "0.5.15",
+      "resolved": "https://registry.npmjs.org/@firebase/app-compat/-/app-compat-0.5.15.tgz",
+      "integrity": "sha512-HaiSM9TwbGIR4b7F6+UncHWlqdH89eeY7VUskaOGOlI2PxHS5Z+6hHsYGvNLy0SHDE6zyXO+3QSA6a4aqQxsqA==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/app": "0.15.1",
+        "@firebase/component": "0.7.3",
+        "@firebase/logger": "0.5.1",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
+      },
       "engines": {
-        "node": ">=18"
+        "node": ">=20.0.0"
       }
     },
-    "node_modules/@img/sharp-darwin-arm64": {
-      "version": "0.34.5",
-      "resolved": "https://registry.npmjs.org/@img/sharp-darwin-arm64/-/sharp-darwin-arm64-0.34.5.tgz",
-      "integrity": "sha512-imtQ3WMJXbMY4fxb/Ndp6HBTNVtWCUI0WdobyheGf5+ad6xX8VIDO8u2xE4qc/fr08CKG/7dDseFtn6M6g/r3w==",
-      "cpu": [
-        "arm64"
-      ],
+    "node_modules/@firebase/app-types": {
+      "version": "0.9.5",
+      "resolved": "https://registry.npmjs.org/@firebase/app-types/-/app-types-0.9.5.tgz",
+      "integrity": "sha512-YevqTjvo7Iujsa9Dwowmd6dSoElhzmD63ZSrq6bzjvQ6POjYgNjOFHLmNIgJs48eNO093NCERibuFnxbfOvU7A==",
       "license": "Apache-2.0",
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
+      "dependencies": {
+        "@firebase/logger": "0.5.1"
+      }
+    },
+    "node_modules/@firebase/auth": {
+      "version": "1.13.3",
+      "resolved": "https://registry.npmjs.org/@firebase/auth/-/auth-1.13.3.tgz",
+      "integrity": "sha512-bqiq4uubDN2YyQkdvSWPQeJyXAv2O76ImF41En9b6UhV5JuBVYDoHYrrrE3NzIuGkpFMKagfhMRP4Vz6t+yQSQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/component": "0.7.3",
+        "@firebase/logger": "0.5.1",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
+      },
       "engines": {
-        "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+        "node": ">=20.0.0"
       },
-      "funding": {
-        "url": "https://opencollective.com/libvips"
+      "peerDependencies": {
+        "@firebase/app": "0.x",
+        "@react-native-async-storage/async-storage": "^2.2.0 || ^3.0.0"
       },
-      "optionalDependencies": {
-        "@img/sharp-libvips-darwin-arm64": "1.2.4"
+      "peerDependenciesMeta": {
+        "@react-native-async-storage/async-storage": {
+          "optional": true
+        }
       }
     },
-    "node_modules/@img/sharp-darwin-x64": {
-      "version": "0.34.5",
-      "resolved": "https://registry.npmjs.org/@img/sharp-darwin-x64/-/sharp-darwin-x64-0.34.5.tgz",
-      "integrity": "sha512-YNEFAF/4KQ/PeW0N+r+aVVsoIY0/qxxikF2SWdp+NRkmMB7y9LBZAVqQ4yhGCm/H3H270OSykqmQMKLBhBJDEw==",
-      "cpu": [
-        "x64"
-      ],
+    "node_modules/@firebase/auth-compat": {
+      "version": "0.6.8",
+      "resolved": "https://registry.npmjs.org/@firebase/auth-compat/-/auth-compat-0.6.8.tgz",
+      "integrity": "sha512-llcBREUC4iSNKZ6rvwud7Oz9Q7aAWU6KuQLa6pdu7Q+QAQsy4JLw6yFgxwtmzabsgznHmmcsX2UjHLLzqUxi3Q==",
       "license": "Apache-2.0",
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
-      "engines": {
-        "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+      "dependencies": {
+        "@firebase/auth": "1.13.3",
+        "@firebase/auth-types": "0.13.1",
+        "@firebase/component": "0.7.3",
+        "@firebase/util": "1.15.1",
+        "tslib": "^2.1.0"
       },
-      "funding": {
-        "url": "https://opencollective.com/libvips"
+      "engines": {
+        "node": ">=20.0.0"
       },
-      "optionalDependencies": {
-        "@img/sharp-libvips-darwin-x64": "1.2.4"
+      "peerDependencies": {
+        "@firebase/app-compat": "0.x"
       }
     },
-    "node_modules/@img/sharp-libvips-darwin-arm64": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/@img/sharp-libvips-darwin-arm64/-/sharp-libvips-darwin-arm64-1.2.4.tgz",
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-      "cpu": [
-        "arm64"
-      ],
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-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
-      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
-      "dev": true,
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.1.tgz",
+      "integrity": "sha512-a6ENMBBGZBsnlSebQ/eKCguSBeGKSf4O7BPnqVPmYGtpBYI7VSqoVqw+QcB7kPRjbqPwhYTpFbVj/RqNz/CT0Q==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
diff --git a/package.json b/package.json
index 414141d..69b4beb 100644
--- a/package.json
+++ b/package.json
@@ -12,20 +12,31 @@
     "@serwist/next": "^9.5.11",
     "dexie": "^4.4.4",
     "dexie-react-hooks": "^4.4.0",
+    "firebase": "^12.16.0",
+    "firebase-admin": "^14.1.0",
+    "gsap": "^3.15.0",
+    "leaflet": "^1.9.4",
     "lucide-react": "^1.24.0",
     "next": "16.2.10",
+    "next-auth": "^5.0.0-beta.31",
     "react": "19.2.4",
     "react-dom": "19.2.4",
     "serwist": "^9.5.11"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
+    "@types/leaflet": "^1.9.21",
     "@types/node": "^20",
-    "@types/react": "^19",
+    "@types/react": "^19.2.17",
     "@types/react-dom": "^19",
     "eslint": "^9",
     "eslint-config-next": "16.2.10",
     "tailwindcss": "^4",
     "typescript": "^5"
+  },
+  "overrides": {
+    "jwks-rsa": {
+      "jose": "4.15.9"
+    }
   }
 }
diff --git a/storage.rules b/storage.rules
new file mode 100644
index 0000000..7545b7c
--- /dev/null
+++ b/storage.rules
@@ -0,0 +1,13 @@
+// NOTE: Firebase Storage is NOT currently enabled for this project.
+// All images sync via Firestore as Base64 strings.
+// This rules file is unused until/unless Storage is enabled in the future.
+
+rules_version = '2';
+service firebase.storage {
+  match /b/{bucket}/o {
+    // Users can only read and write to their own folder paths under users/{uid}
+    match /users/{uid}/{allPaths=**} {
+      allow read, write: if request.auth != null && request.auth.uid == uid;
+    }
+  }
+}
diff --git a/utils/image.ts b/utils/image.ts
index 2bdf271..e49fa0d 100644
--- a/utils/image.ts
+++ b/utils/image.ts
@@ -111,15 +111,15 @@ export async function makeThumbnailFromBlob(
  * compressed) binary, retrieved only when the user opens a detail view.
  *
  * @param file     - Raw image file from `<input type="file">`.
- * @param maxWidth - Maximum width in px (default 1000). Height scales
+ * @param maxWidth - Maximum width in px (default 900). Height scales
  *                   proportionally.
- * @param quality  - JPEG quality 0–1 (default 0.8).
+ * @param quality  - JPEG quality 0–1 (default 0.7).
  * @returns Compressed JPEG `Blob`.
  */
 export async function compressToBlob(
   file: File,
-  maxWidth = 1000,
-  quality = 0.8,
+  maxWidth = 900,
+  quality = 0.7,
 ): Promise<Blob> {
   const canvas = await resizeToCanvas(file, maxWidth);
 
@@ -134,3 +134,50 @@ export async function compressToBlob(
     );
   });
 }
+
+/**
+ * Convert a Blob into a base64 JPEG data-URL, making sure it stays
+ * safely under the target Firestore document size limit (e.g. ~700KB
+ * to leave headroom for other fields under the 1 MiB limit).
+ * If the resulting base64 string exceeds 700KB, it is progressively
+ * re-compressed with lower quality. If it still exceeds the limit
+ * after 3 retries, returns null.
+ *
+ * NOTE: Oversized document writes will fail Firestore's 1 MiB write limit
+ * outright with no clear error, so this check prevents sync failures.
+ */
+export async function compressBlobToSafeBase64(
+  blob: Blob,
+  maxDimension = 900,
+  initialQuality = 0.7,
+): Promise<string | null> {
+  let quality = initialQuality;
+  let canvas: HTMLCanvasElement;
+  try {
+    canvas = await resizeToCanvas(blob, maxDimension);
+  } catch (err) {
+    console.error("[KeepCheck] Failed to decode blob for re-compression:", err);
+    return null;
+  }
+
+  let base64 = canvas.toDataURL("image/jpeg", quality);
+  const targetLimitBytes = 700 * 1024; // 700KB string length
+
+  let retries = 0;
+  while (base64.length > targetLimitBytes && retries < 3) {
+    retries++;
+    quality -= 0.15; // Step down quality (e.g. 0.7 -> 0.55 -> 0.40 -> 0.25)
+    if (quality < 0.1) {
+      break;
+    }
+    console.log(`[KeepCheck] Base64 image size (${Math.round(base64.length / 1024)}KB) exceeds 700KB limit. Re-compressing with quality ${quality.toFixed(2)} (retry ${retries}/3)...`);
+    base64 = canvas.toDataURL("image/jpeg", quality);
+  }
+
+  if (base64.length > targetLimitBytes) {
+    console.warn(`[KeepCheck] Base64 image still too large (${Math.round(base64.length / 1024)}KB) after retries. Skipping sync to Firestore to prevent oversized document failure.`);
+    return null;
+  }
+
+  return base64;
+}