diff --git a/.gitignore b/.gitignore
index 7f57002d22..85711510b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,6 +29,10 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 .pnpm-debug.log*
+.codex-next-dev-*.log
+
+# local browser automation artifacts
+.claude-playwright/
 
 # env files (can opt-in for committing if needed)
 .env*
diff --git a/messages/en.json b/messages/en.json
index a3dd25ff20..62c72e6c9f 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -15,7 +15,8 @@
     "createAccount": "Create account"
   },
   "Sidebar": {
-    "title": "CRM Template for WhatsApp",
+    "title": "Decizyon CRM",
+    "operationalCommand": "Operational command",
     "dashboard": "Dashboard",
     "inbox": "Inbox",
     "notifications": "Notifications",
diff --git a/messages/ko.json b/messages/ko.json
index 7c54fc939e..b34a89bb99 100644
--- a/messages/ko.json
+++ b/messages/ko.json
@@ -15,7 +15,8 @@
     "createAccount": "계정 만들기"
   },
   "Sidebar": {
-    "title": "WhatsApp용 CRM 템플릿",
+    "title": "Decizyon CRM",
+    "operationalCommand": "운영 커맨드",
     "dashboard": "대시보드",
     "inbox": "인박스",
     "notifications": "알림",
diff --git a/public/brand/decizyon-icon.png b/public/brand/decizyon-icon.png
new file mode 100644
index 0000000000..3ebda7c660
Binary files /dev/null and b/public/brand/decizyon-icon.png differ
diff --git a/public/brand/decizyon-tech-logo.png b/public/brand/decizyon-tech-logo.png
new file mode 100644
index 0000000000..07e6644fcc
Binary files /dev/null and b/public/brand/decizyon-tech-logo.png differ
diff --git a/src/app/(auth)/forgot-password/page.tsx b/src/app/(auth)/forgot-password/page.tsx
index d2a1784fb7..82bb6b317c 100644
--- a/src/app/(auth)/forgot-password/page.tsx
+++ b/src/app/(auth)/forgot-password/page.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { useState } from "react";
+import Image from "next/image";
 import Link from "next/link";
 import { createClient } from "@/lib/supabase/client";
 import { Button } from "@/components/ui/button";
@@ -13,7 +14,7 @@ import {
   CardHeader,
   CardTitle,
 } from "@/components/ui/card";
-import { MessageSquare, CheckCircle, ArrowLeft } from "lucide-react";
+import { CheckCircle, ArrowLeft } from "lucide-react";
 
 export default function ForgotPasswordPage() {
   const [email, setEmail] = useState("");
@@ -77,10 +78,16 @@ export default function ForgotPasswordPage() {
     <div className="flex min-h-screen items-center justify-center bg-background px-4">
       <Card className="w-full max-w-md border-border bg-card">
         <CardHeader className="items-center text-center">
-          <div className="mb-2 flex h-12 w-12 items-center justify-center rounded-xl bg-primary/10">
-            <MessageSquare className="h-6 w-6 text-primary" />
+          <div className="mb-2 flex h-12 w-12 items-center justify-center rounded-lg border border-border bg-card shadow-sm">
+            <Image
+              src="/brand/decizyon-icon.png"
+              alt="Decizyon"
+              width={34}
+              height={34}
+              priority
+            />
           </div>
-          <CardTitle className="text-xl text-foreground">Reset password</CardTitle>
+          <CardTitle className="font-heading text-xl text-foreground">Reset password</CardTitle>
           <CardDescription className="text-muted-foreground">
             Enter your email and we&apos;ll send you a reset link
           </CardDescription>
diff --git a/src/app/(auth)/login/page.tsx b/src/app/(auth)/login/page.tsx
index abef3c2d39..cfe4bf12e9 100644
--- a/src/app/(auth)/login/page.tsx
+++ b/src/app/(auth)/login/page.tsx
@@ -2,6 +2,7 @@
 
 import { Suspense, useState } from "react";
 import { useSearchParams } from "next/navigation";
+import Image from "next/image";
 import Link from "next/link";
 import { useTranslations } from "next-intl";
 import { createClient } from "@/lib/supabase/client";
@@ -15,7 +16,7 @@ import {
   CardHeader,
   CardTitle,
 } from "@/components/ui/card";
-import { MessageSquare, UsersRound } from "lucide-react";
+import { UsersRound } from "lucide-react";
 
 // `useSearchParams` opts the component out of static prerendering
 // unless it sits under a Suspense boundary. We split the form into
@@ -78,14 +79,20 @@ function LoginPageInner() {
     <div className="flex min-h-screen items-center justify-center bg-background px-4">
       <Card className="w-full max-w-md border-border bg-card">
         <CardHeader className="items-center text-center">
-          <div className="mb-2 flex h-12 w-12 items-center justify-center rounded-xl bg-primary/10">
+          <div className="mb-2 flex h-12 w-12 items-center justify-center rounded-lg border border-border bg-card shadow-sm">
             {inviteToken ? (
               <UsersRound className="h-6 w-6 text-primary" />
             ) : (
-              <MessageSquare className="h-6 w-6 text-primary" />
+              <Image
+                src="/brand/decizyon-icon.png"
+                alt="Decizyon"
+                width={34}
+                height={34}
+                priority
+              />
             )}
           </div>
-          <CardTitle className="text-xl text-foreground">
+          <CardTitle className="font-heading text-xl text-foreground">
             {inviteToken ? t('titleAccept') : t('titleWelcome')}
           </CardTitle>
           <CardDescription className="text-muted-foreground">
diff --git a/src/app/(auth)/signup/page.tsx b/src/app/(auth)/signup/page.tsx
index 56985cdb2f..42092d2056 100644
--- a/src/app/(auth)/signup/page.tsx
+++ b/src/app/(auth)/signup/page.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { Suspense, useState } from "react";
+import Image from "next/image";
 import Link from "next/link";
 import { useSearchParams } from "next/navigation";
 import { createClient } from "@/lib/supabase/client";
@@ -14,7 +15,7 @@ import {
   CardHeader,
   CardTitle,
 } from "@/components/ui/card";
-import { MessageSquare, CheckCircle, UsersRound } from "lucide-react";
+import { CheckCircle, UsersRound } from "lucide-react";
 
 // `useSearchParams` opts the component out of static prerendering
 // unless wrapped in Suspense — same pattern as /login.
@@ -131,14 +132,20 @@ function SignupPageInner() {
     <div className="flex min-h-screen items-center justify-center bg-background px-4">
       <Card className="w-full max-w-md border-border bg-card">
         <CardHeader className="items-center text-center">
-          <div className="mb-2 flex h-12 w-12 items-center justify-center rounded-xl bg-primary/10">
+          <div className="mb-2 flex h-12 w-12 items-center justify-center rounded-lg border border-border bg-card shadow-sm">
             {inviteToken ? (
               <UsersRound className="h-6 w-6 text-primary" />
             ) : (
-              <MessageSquare className="h-6 w-6 text-primary" />
+              <Image
+                src="/brand/decizyon-icon.png"
+                alt="Decizyon"
+                width={34}
+                height={34}
+                priority
+              />
             )}
           </div>
-          <CardTitle className="text-xl text-foreground">
+          <CardTitle className="font-heading text-xl text-foreground">
             {inviteToken ? "Create account & join" : "Create account"}
           </CardTitle>
           <CardDescription className="text-muted-foreground">
diff --git a/src/app/globals.css b/src/app/globals.css
index ee8f58dac7..f9e2a007cf 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -88,10 +88,10 @@
 
 :root,
 html[data-mode="dark"] {
-  --background: oklch(0.13 0.01 260);
-  --foreground: oklch(0.985 0 0);
-  --card: oklch(0.18 0.01 260);
-  --card-2: oklch(0.205 0.01 260);
+  --background: #061b22;
+  --foreground: #f7fafa;
+  --card: #082a32;
+  --card-2: #0c3640;
   --card-foreground: oklch(0.985 0 0);
   --popover: oklch(0.18 0.01 260);
   --popover-foreground: oklch(0.985 0 0);
@@ -117,10 +117,10 @@ html[data-mode="dark"] {
 }
 
 html[data-mode="light"] {
-  --background: oklch(0.99 0.002 260);
-  --foreground: oklch(0.21 0.01 260);
-  --card: oklch(1 0 0);
-  --card-2: oklch(0.985 0.002 260);
+  --background: #f7fafa;
+  --foreground: #08202e;
+  --card: #ffffff;
+  --card-2: #eef5f5;
   --card-foreground: oklch(0.21 0.01 260);
   --popover: oklch(1 0 0);
   --popover-foreground: oklch(0.21 0.01 260);
@@ -148,6 +148,19 @@ html[data-mode="light"] {
 /* ---- ACCENT: primary color ---- */
 
 :root,
+html[data-theme="decizyon"] {
+  --primary: #073b45;
+  --primary-foreground: #ffffff;
+  --primary-hover: #0b4f59;
+  --primary-soft: rgb(7 59 69 / 0.1);
+  --primary-soft-2: rgb(21 159 153 / 0.16);
+  --ring: #159f99;
+  --chart-1: #073b45;
+  --sidebar-primary: #073b45;
+  --sidebar-primary-foreground: #ffffff;
+  --sidebar-ring: #159f99;
+}
+
 html[data-theme="violet"] {
   --primary: oklch(0.526 0.247 293);
   --primary-foreground: oklch(0.985 0 0);
@@ -227,4 +240,4 @@ html[data-theme="rose"] {
   html {
     @apply font-sans;
   }
-}
\ No newline at end of file
+}
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index 4a8c05a344..4342edc644 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -22,16 +22,16 @@ const inter = Inter({
 
 export const metadata: Metadata = {
   title: {
-    default: "wacrm",
-    template: "%s — wacrm",
+    default: "Decizyon CRM",
+    template: "%s | Decizyon CRM",
   },
-  description: "Self-hostable CRM template for WhatsApp.",
+  description: "CRM operacional para WhatsApp com identidade Decizyon.",
   robots: {
     index: false,
     follow: false,
   },
   icons: {
-    icon: [{ url: "/icon" }],
+    icon: [{ url: "/brand/decizyon-icon.png" }],
   },
   formatDetection: {
     email: false,
diff --git a/src/components/layout/header.tsx b/src/components/layout/header.tsx
index 18ac0b161f..99ac06a32c 100644
--- a/src/components/layout/header.tsx
+++ b/src/components/layout/header.tsx
@@ -68,9 +68,14 @@ export function Header({ onOpenSidebar }: HeaderProps) {
         >
           <Menu className="h-5 w-5" />
         </button>
-        <h1 className="truncate text-base font-semibold text-foreground sm:text-lg">
-          {t(titleKey as string)}
-        </h1>
+        <div className="min-w-0">
+          <p className="text-[11px] font-semibold uppercase text-muted-foreground sm:text-[12px]">
+            Decizyon CRM
+          </p>
+          <h1 className="truncate text-lg font-heading font-semibold text-foreground sm:text-xl">
+            {t(titleKey as string)}
+          </h1>
+        </div>
       </div>
 
       <div className="flex items-center gap-1 sm:gap-2">
diff --git a/src/components/layout/sidebar.tsx b/src/components/layout/sidebar.tsx
index 5db7488056..f0ceeec574 100644
--- a/src/components/layout/sidebar.tsx
+++ b/src/components/layout/sidebar.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import Link from "next/link";
+import Image from "next/image";
 import { usePathname } from "next/navigation";
 import { useEffect } from "react";
 import { cn } from "@/lib/utils";
@@ -188,12 +189,23 @@ export function Sidebar({ open = false, onClose }: SidebarProps) {
             close button is hidden since the sidebar is always-visible. */}
         <div className="flex h-14 shrink-0 items-center justify-between gap-2 border-b border-border px-4">
           <Link href="/dashboard" className="flex items-center gap-2">
-            <div className="flex h-8 w-8 items-center justify-center rounded-lg bg-primary text-primary-foreground">
-              <MessageSquare className="h-4 w-4" />
+            <div className="flex h-10 w-10 items-center justify-center rounded-lg border border-primary/15 bg-primary-soft text-primary">
+              <Image
+                src="/brand/decizyon-icon.png"
+                alt=""
+                width={28}
+                height={28}
+                priority
+              />
+            </div>
+            <div className="min-w-0">
+              <p className="truncate font-heading text-sm font-semibold text-foreground">
+                Decizyon CRM
+              </p>
+              <p className="text-xs text-muted-foreground">
+                {t("operationalCommand")}
+              </p>
             </div>
-            <span className="text-sm font-semibold text-foreground">
-              {t("title")}
-            </span>
           </Link>
           <button
             type="button"
diff --git a/src/lib/currency.test.ts b/src/lib/currency.test.ts
index 3071fc705a..5a1891255c 100644
--- a/src/lib/currency.test.ts
+++ b/src/lib/currency.test.ts
@@ -6,11 +6,13 @@ import {
   formatCurrencyShort,
 } from "./currency";
 
+const GROUPED_1234 = /1[,.]234/;
+
 describe("formatCurrency", () => {
   it("formats whole amounts with no minor units", () => {
     // Use a non-breaking-space-tolerant check: Intl may insert NBSP.
     const out = formatCurrency(1234, "USD");
-    expect(out).toContain("1,234");
+    expect(out).toMatch(GROUPED_1234);
     expect(out).not.toContain(".00");
   });
 
@@ -30,13 +32,13 @@ describe("formatCurrency", () => {
     // Intl is lenient here — it uses the code as the symbol.
     const out = formatCurrency(1234, "ZZZ");
     expect(out).toContain("ZZZ");
-    expect(out).toContain("1,234");
+    expect(out).toMatch(GROUPED_1234);
   });
 
   it("never throws on a structurally invalid code (no DB CHECK on deals.currency)", () => {
     for (const bad of ["United States", "US", "USDD", "12", "u$d"]) {
       expect(() => formatCurrency(1234, bad)).not.toThrow();
-      expect(formatCurrency(1234, bad)).toContain("1,234");
+      expect(formatCurrency(1234, bad)).toMatch(GROUPED_1234);
     }
   });
 
diff --git a/src/lib/dashboard/date-utils.test.ts b/src/lib/dashboard/date-utils.test.ts
index 262135f014..5e44d468ba 100644
--- a/src/lib/dashboard/date-utils.test.ts
+++ b/src/lib/dashboard/date-utils.test.ts
@@ -106,17 +106,17 @@ describe("lastNDayKeys", () => {
 
 describe("mondayIndex", () => {
   it("maps Monday → 0 and Sunday → 6", () => {
-    expect(mondayIndex(new Date("2026-05-18"))).toBe(0); // Mon
-    expect(mondayIndex(new Date("2026-05-19"))).toBe(1); // Tue
-    expect(mondayIndex(new Date("2026-05-23"))).toBe(5); // Sat
-    expect(mondayIndex(new Date("2026-05-24"))).toBe(6); // Sun
+    expect(mondayIndex(new Date(2026, 4, 18))).toBe(0); // Mon
+    expect(mondayIndex(new Date(2026, 4, 19))).toBe(1); // Tue
+    expect(mondayIndex(new Date(2026, 4, 23))).toBe(5); // Sat
+    expect(mondayIndex(new Date(2026, 4, 24))).toBe(6); // Sun
   });
 
   it("aligns with DOW_SHORT_MON_FIRST labels", () => {
-    expect(DOW_SHORT_MON_FIRST[mondayIndex(new Date("2026-05-18"))]).toBe(
+    expect(DOW_SHORT_MON_FIRST[mondayIndex(new Date(2026, 4, 18))]).toBe(
       "Mon",
     );
-    expect(DOW_SHORT_MON_FIRST[mondayIndex(new Date("2026-05-24"))]).toBe(
+    expect(DOW_SHORT_MON_FIRST[mondayIndex(new Date(2026, 4, 24))]).toBe(
       "Sun",
     );
   });
diff --git a/src/lib/themes.ts b/src/lib/themes.ts
index 52926939c6..1d3df972a8 100644
--- a/src/lib/themes.ts
+++ b/src/lib/themes.ts
@@ -14,6 +14,7 @@
  */
 
 export const THEME_IDS = [
+  "decizyon",
   "violet",
   "emerald",
   "cobalt",
@@ -23,9 +24,9 @@ export const THEME_IDS = [
 
 export type ThemeId = (typeof THEME_IDS)[number];
 
-export const DEFAULT_THEME: ThemeId = "violet";
+export const DEFAULT_THEME: ThemeId = "decizyon";
 
-export const STORAGE_KEY = "wacrm.theme";
+export const STORAGE_KEY = "decizyon.theme";
 
 /**
  * MODE — the light/dark dimension, orthogonal to the accent theme.
@@ -67,6 +68,12 @@ export interface ThemeMeta {
 }
 
 export const THEMES: ReadonlyArray<ThemeMeta> = [
+  {
+    id: "decizyon",
+    name: "Decizyon",
+    tagline: "Operational CRM identity with deep teal and aqua accents.",
+    swatch: "#073b45",
+  },
   {
     id: "violet",
     name: "Violet",