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Add dark theme support #26

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Add dark theme support #26

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20 changes: 19 additions & 1 deletion index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,14 @@
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>TaskForge — open-source task tracker</title>
<script>
(() => {
const saved = window.localStorage.getItem("taskforge.theme");
if (saved === "dark" || saved === "light") {
document.documentElement.dataset.theme = saved;
}
})();
</script>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
Expand All @@ -12,14 +20,24 @@
<h1>TaskForge</h1>
<p class="tagline">A tiny task list that lives in your browser.</p>
</div>
<div class="auth-panel" aria-live="polite">
<div class="header-actions">
<button
id="theme-toggle"
class="theme-toggle"
type="button"
aria-pressed="false"
>
Dark theme
</button>
<div class="auth-panel" aria-live="polite">
<img id="auth-avatar" class="auth-avatar" hidden />
<span id="auth-status" class="auth-status">
Tasks are stored on this device.
</span>
<button id="auth-action" class="auth-action" type="button">
Sign in with GitHub
</button>
</div>
</div>
</header>

Expand Down
35 changes: 35 additions & 0 deletions src/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,11 +15,14 @@ const authStatus = document.getElementById("auth-status");
const authAction = document.getElementById("auth-action");
const authAvatar = document.getElementById("auth-avatar");
const authMessage = document.getElementById("auth-message");
const themeToggle = document.getElementById("theme-toggle");
const THEME_KEY = "taskforge.theme";

let tasks = [];
let user = null;

async function init() {
initTheme();
const localTasks = loadLocal();
let completedSignIn = false;
try {
Expand Down Expand Up @@ -96,6 +99,11 @@ form.addEventListener("submit", async (e) => {
render();
});

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

authAction.addEventListener("click", async () => {
authAction.disabled = true;
try {
Expand Down Expand Up @@ -147,3 +155,30 @@ function mergeTasks(localTasks, remoteTasks) {
}

init();

function initTheme() {
const saved = window.localStorage.getItem(THEME_KEY);
if (saved === "dark" || saved === "light") {
applyTheme(saved, false);
return;
}
applyTheme(preferredTheme(), false);
}

function preferredTheme() {
return window.matchMedia("(prefers-color-scheme: dark)").matches
? "dark"
: "light";
}

function currentTheme() {
return document.documentElement.dataset.theme || preferredTheme();
}

function applyTheme(theme, persist) {
document.documentElement.dataset.theme = theme;
if (persist) window.localStorage.setItem(THEME_KEY, theme);
const dark = theme === "dark";
themeToggle.setAttribute("aria-pressed", String(dark));
themeToggle.textContent = dark ? "Light theme" : "Dark theme";
}
58 changes: 56 additions & 2 deletions styles.css
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Original file line number Diff line number Diff line change
@@ -1,14 +1,48 @@
:root {
color-scheme: light;
--bg: #ffffff;
--fg: #1f2328;
--muted: #6e7781;
--border: #d0d7de;
--accent: #0969da;
--accent-fg: #ffffff;
--done: #8c959f;
--panel-bg: #f6f8fa;
--danger: #cf222e;
--danger-bg: rgba(207, 34, 46, 0.08);
--radius: 6px;
}

@media (prefers-color-scheme: dark) {
:root:not([data-theme="light"]) {
color-scheme: dark;
--bg: #0d1117;
--fg: #e6edf3;
--muted: #8b949e;
--border: #30363d;
--accent: #2f81f7;
--accent-fg: #ffffff;
--done: #6e7681;
--panel-bg: #161b22;
--danger: #ff7b72;
--danger-bg: rgba(248, 81, 73, 0.16);
}
}

:root[data-theme="dark"] {
color-scheme: dark;
--bg: #0d1117;
--fg: #e6edf3;
--muted: #8b949e;
--border: #30363d;
--accent: #2f81f7;
--accent-fg: #ffffff;
--done: #6e7681;
--panel-bg: #161b22;
--danger: #ff7b72;
--danger-bg: rgba(248, 81, 73, 0.16);
}

* {
box-sizing: border-box;
}
Expand Down Expand Up @@ -43,6 +77,13 @@ body {
font-size: 0.95rem;
}

.header-actions {
display: flex;
align-items: center;
justify-content: flex-end;
gap: 0.75rem;
}

.auth-panel {
display: flex;
align-items: center;
Expand All @@ -64,6 +105,7 @@ body {
overflow-wrap: anywhere;
}

.theme-toggle,
.auth-action {
flex: 0 0 auto;
padding: 0.45rem 0.75rem;
Expand All @@ -75,6 +117,12 @@ body {
cursor: pointer;
}

.theme-toggle {
color: var(--fg);
background: var(--panel-bg);
border-color: var(--border);
}

.auth-action:disabled {
cursor: wait;
opacity: 0.7;
Expand Down Expand Up @@ -171,8 +219,8 @@ body {
}

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

.empty-state {
Expand All @@ -198,6 +246,12 @@ body {
flex-direction: column;
}

.header-actions {
align-items: stretch;
flex-direction: column;
width: 100%;
}

.auth-panel {
justify-content: flex-start;
min-width: 0;
Expand Down