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Add persistent dark theme toggle #14

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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ A simple, community-maintained open-source task tracker. Add tasks, check them o
- Single-page, zero-build static web app
- Tasks persist in `localStorage` — no account, no server, no tracking
- Keyboard-friendly (more shortcuts coming, see #5)
- Light & dark themes (dark coming, see #1)
- Light and dark themes
- MIT licensed

## Quick start
Expand Down
31 changes: 29 additions & 2 deletions index.html
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Expand Up @@ -4,12 +4,39 @@
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>TaskForge — open-source task tracker</title>
<script>
(() => {
let storedTheme = null;
try {
storedTheme = window.localStorage.getItem("taskforge.theme");
} catch {
storedTheme = null;
}
const prefersDark = window.matchMedia("(prefers-color-scheme: dark)").matches;
const theme = storedTheme || (prefersDark ? "dark" : "light");
document.documentElement.dataset.theme = theme;
})();
</script>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<header class="app-header">
<h1>TaskForge</h1>
<p class="tagline">A tiny task list that lives in your browser.</p>
<div class="header-content">
<div>
<h1>TaskForge</h1>
<p class="tagline">A tiny task list that lives in your browser.</p>
</div>
<button
id="theme-toggle"
class="theme-toggle"
type="button"
aria-label="Switch to dark theme"
aria-pressed="false"
>
<span class="theme-toggle-icon" aria-hidden="true"></span>
<span class="theme-toggle-text">Theme</span>
</button>
</div>
</header>

<main class="app-main">
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20 changes: 20 additions & 0 deletions src/app.js
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Expand Up @@ -5,9 +5,24 @@ const form = document.getElementById("task-form");
const input = document.getElementById("task-input");
const list = document.getElementById("task-list");
const emptyState = document.getElementById("empty-state");
const themeToggle = document.getElementById("theme-toggle");

let tasks = load();

function currentTheme() {
return document.documentElement.dataset.theme === "dark" ? "dark" : "light";
}

function setTheme(theme, persist = false) {
document.documentElement.dataset.theme = theme;
if (persist) {
window.localStorage.setItem("taskforge.theme", theme);
}
const nextTheme = theme === "dark" ? "light" : "dark";
themeToggle.setAttribute("aria-label", `Switch to ${nextTheme} theme`);
themeToggle.setAttribute("aria-pressed", String(theme === "dark"));
}

function render() {
list.innerHTML = "";
if (tasks.length === 0) {
Expand Down Expand Up @@ -60,4 +75,9 @@ form.addEventListener("submit", (e) => {
render();
});

themeToggle.addEventListener("click", () => {
setTheme(currentTheme() === "dark" ? "light" : "dark", true);
});

setTheme(currentTheme());
render();
75 changes: 71 additions & 4 deletions styles.css
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Expand Up @@ -6,7 +6,25 @@
--accent: #0969da;
--accent-fg: #ffffff;
--done: #8c959f;
--panel: #f6f8fa;
--danger: #cf222e;
--danger-bg: rgba(207, 34, 46, 0.08);
--radius: 6px;
color-scheme: light;
}

:root[data-theme="dark"] {
--bg: #0d1117;
--fg: #e6edf3;
--muted: #8b949e;
--border: #30363d;
--accent: #2f81f7;
--accent-fg: #ffffff;
--done: #6e7681;
--panel: #161b22;
--danger: #ff7b72;
--danger-bg: rgba(248, 81, 73, 0.14);
color-scheme: dark;
}

* {
Expand All @@ -24,14 +42,23 @@ body {

.app-header {
padding: 2rem 1.25rem 1rem;
text-align: center;
background: var(--panel);
border-bottom: 1px solid var(--border);
}

.header-content {
max-width: 36rem;
margin: 0 auto;
display: flex;
align-items: center;
justify-content: space-between;
gap: 1rem;
}

.app-header h1 {
margin: 0;
font-size: 1.75rem;
letter-spacing: -0.01em;
letter-spacing: 0;
}

.tagline {
Expand All @@ -40,6 +67,38 @@ body {
font-size: 0.95rem;
}

.theme-toggle {
flex: 0 0 auto;
display: inline-flex;
align-items: center;
gap: 0.4rem;
min-height: 2.25rem;
padding: 0.45rem 0.7rem;
font: inherit;
color: var(--fg);
background: var(--bg);
border: 1px solid var(--border);
border-radius: var(--radius);
cursor: pointer;
}

.theme-toggle:hover {
border-color: var(--accent);
}

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

.theme-toggle-icon {
width: 1rem;
height: 1rem;
border: 2px solid currentColor;
border-radius: 50%;
background: linear-gradient(90deg, currentColor 50%, transparent 50%);
}

.app-main {
max-width: 36rem;
margin: 0 auto;
Expand Down Expand Up @@ -98,6 +157,7 @@ body {
padding: 0.6rem 0.75rem;
border: 1px solid var(--border);
border-radius: var(--radius);
background: var(--panel);
}

.task-item.done .task-title {
Expand All @@ -122,8 +182,8 @@ body {
}

.task-delete:hover {
color: #cf222e;
background: rgba(207, 34, 46, 0.08);
color: var(--danger);
background: var(--danger-bg);
}

.empty-state {
Expand All @@ -142,3 +202,10 @@ body {
.app-footer a {
color: inherit;
}

@media (max-width: 34rem) {
.header-content {
align-items: flex-start;
flex-direction: column;
}
}