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Add night mode theme with twinkling stars #113

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Add night mode theme with twinkling stars #113

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152 changes: 149 additions & 3 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,50 @@
--paper: #fbfbfa;
--panel: rgba(255, 255, 255, 0.72);
--accent: #111;
--steam: #c9c9c7;
--hover-bg: #fff;
--hover-border: #b8b8b8;
}

@media (prefers-color-scheme: dark) {
:root:not([data-theme="day"]) {
color-scheme: dark;
--ink: #e8e8e4;
--muted: #888880;
--faint: #2c2c30;
--paper: #0c0c14;
--panel: rgba(18, 18, 26, 0.82);
--accent: #e8e8e4;
--steam: rgba(200, 200, 220, 0.55);
--hover-bg: rgba(30, 30, 40, 0.9);
--hover-border: #48484e;
}
}

[data-theme="night"] {
color-scheme: dark;
--ink: #e8e8e4;
--muted: #888880;
--faint: #2c2c30;
--paper: #0c0c14;
--panel: rgba(18, 18, 26, 0.82);
--accent: #e8e8e4;
--steam: rgba(200, 200, 220, 0.55);
--hover-bg: rgba(30, 30, 40, 0.9);
--hover-border: #48484e;
}

[data-theme="day"] {
color-scheme: light;
--ink: #151515;
--muted: #7a7a7a;
--faint: #d9d9d9;
--paper: #fbfbfa;
--panel: rgba(255, 255, 255, 0.72);
--accent: #111;
--steam: #c9c9c7;
--hover-bg: #fff;
--hover-border: #b8b8b8;
}

* {
Expand Down Expand Up @@ -127,7 +171,7 @@
.steam {
position: fixed;
z-index: 0;
color: #c9c9c7;
color: var(--steam);
font-size: 18px;
pointer-events: none;
animation: puff 1400ms ease-out forwards;
Expand Down Expand Up @@ -158,8 +202,8 @@
}

.mute-toggle:hover {
background: #fff;
border-color: #b8b8b8;
background: var(--hover-bg);
border-color: var(--hover-border);
transform: translateY(-1px);
}

Expand All @@ -180,6 +224,54 @@
pointer-events: none;
}

.theme-toggle {
position: fixed;
top: 16px;
right: 62px;
z-index: 10;
display: inline-flex;
width: 38px;
height: 38px;
align-items: center;
justify-content: center;
border: 1px solid var(--faint);
border-radius: 999px;
background: var(--panel);
color: var(--ink);
cursor: pointer;
font-size: 16px;
backdrop-filter: blur(14px);
transition:
border-color 150ms ease,
background 150ms ease,
transform 150ms ease;
}

.theme-toggle:hover {
background: var(--hover-bg);
border-color: var(--hover-border);
transform: translateY(-1px);
}

.theme-toggle:focus-visible {
outline: 2px solid var(--accent);
outline-offset: 3px;
}

.star {
position: fixed;
z-index: 0;
border-radius: 50%;
background: #e8e8e4;
pointer-events: none;
animation: twinkle var(--twinkle-dur, 3s) ease-in-out infinite var(--twinkle-delay, 0s);
}

@keyframes twinkle {
0%, 100% { opacity: var(--star-opacity, 0.65); }
50% { opacity: 0.08; }
}

@keyframes wiggle {
0%,
100% {
Expand Down Expand Up @@ -273,6 +365,16 @@
</div>
</div>

<button
class="theme-toggle"
id="theme-toggle"
type="button"
aria-label="Night mode"
aria-pressed="false"
>
🌙
</button>

<button
class="mute-toggle"
id="mute"
Expand All @@ -298,6 +400,7 @@
const dispatcher = document.querySelector("#dispatcher");
const hero = document.querySelector("#hero");
const muteButton = document.querySelector("#mute");
const themeToggle = document.querySelector("#theme-toggle");
const counter = document.querySelector("#counter");
const choo = new Audio("./public/choo-choo.mp3");
choo.preload = "auto";
Expand All @@ -309,6 +412,43 @@
let lastDirection = "rtl";
let muted = localStorage.getItem("wtc:muted") === "1";

const savedTheme = localStorage.getItem("wtc:night");
let nightMode = savedTheme !== null
? savedTheme === "1"
: window.matchMedia("(prefers-color-scheme: dark)").matches;

function spawnStars() {
document.querySelectorAll(".star").forEach((s) => s.remove());
for (let i = 0; i < 75; i++) {
const star = document.createElement("div");
star.className = "star";
const size = Math.random() * 2 + 1;
star.style.cssText = [
`left:${Math.random() * 100}vw`,
`top:${Math.random() * 100}vh`,
`width:${size}px`,
`height:${size}px`,
`--twinkle-dur:${2 + Math.random() * 4}s`,
`--twinkle-delay:${-(Math.random() * 4)}s`,
`--star-opacity:${0.35 + Math.random() * 0.55}`,
].join(";");
dispatcher.prepend(star);
}
}

function applyTheme() {
document.documentElement.setAttribute("data-theme", nightMode ? "night" : "day");
themeToggle.textContent = nightMode ? "☀️" : "🌙";
themeToggle.setAttribute("aria-label", nightMode ? "Day mode" : "Night mode");
themeToggle.setAttribute("aria-pressed", String(nightMode));
localStorage.setItem("wtc:night", nightMode ? "1" : "0");
if (nightMode) {
spawnStars();
} else {
document.querySelectorAll(".star").forEach((s) => s.remove());
}
}

function pick(items) {
return items[Math.floor(Math.random() * items.length)];
}
Expand Down Expand Up @@ -403,6 +543,11 @@
muted = !muted;
syncMuteButton();
});
themeToggle.addEventListener("click", (event) => {
event.stopPropagation();
nightMode = !nightMode;
applyTheme();
});

window.addEventListener("keydown", (event) => {
if (event.code === "Space" || event.code === "Enter") {
Expand All @@ -416,6 +561,7 @@

syncMuteButton();
updateCounter();
applyTheme();
</script>
</body>
</html>