131 lines
3.7 KiB
HTML
131 lines
3.7 KiB
HTML
<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Musterlösung: Dark Mode & Themes</title>
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<style>
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/* 🎯 TEILZIEL 1: CSS Variablen auf :root (Light Theme) */
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:root {
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--bg-body: #f8fafc;
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--bg-surface: #ffffff;
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--text-main: #0f172a;
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--text-muted: #64748b;
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--border-color: #e2e8f0;
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--primary: #4f46e5;
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}
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/* 🎯 TEILZIEL 2: Dark Theme Override über [data-theme="dark"] */
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[data-theme="dark"] {
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--bg-body: #0f172a;
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--bg-surface: #1e293b;
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--text-main: #f8fafc;
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--text-muted: #94a3b8;
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--border-color: #334155;
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--primary: #6366f1;
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}
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/* 🎯 TEILZIEL 3: Systempräferenz prefers-color-scheme */
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@media (prefers-color-scheme: dark) {
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:root:not([data-theme="light"]) {
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--bg-body: #0f172a;
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--bg-surface: #1e293b;
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--text-main: #f8fafc;
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--text-muted: #94a3b8;
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--border-color: #334155;
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--primary: #6366f1;
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}
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}
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* {
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box-sizing: border-box;
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margin: 0;
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padding: 0;
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}
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/* 🎯 TEILZIEL 4: Variablen in Komponenten anwenden */
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body {
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font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
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line-height: 1.6;
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padding: 30px;
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background-color: var(--bg-body);
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color: var(--text-main);
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transition: background-color 0.3s ease, color 0.3s ease;
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}
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.container {
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max-width: 800px;
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margin: 0 auto;
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}
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.header-bar {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 30px;
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}
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.btn-toggle {
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background: var(--primary);
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color: white;
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border: none;
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padding: 8px 16px;
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border-radius: 6px;
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font-weight: 600;
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cursor: pointer;
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transition: opacity 0.2s ease;
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}
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.btn-toggle:hover {
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opacity: 0.9;
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}
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.theme-card {
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border-radius: 12px;
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padding: 24px;
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margin-bottom: 20px;
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background-color: var(--bg-surface);
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border: 1px solid var(--border-color);
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transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
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box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
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}
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</style>
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</head>
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<body>
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<div class="container">
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<header class="header-bar">
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<div>
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<h1 style="font-size: 1.8rem;">🌓 Theme Studio</h1>
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<p style="color: var(--text-muted); font-size: 0.9rem;">Dynamischer Dark/Light Mode mit CSS Custom Properties.</p>
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</div>
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<button id="theme-toggle" class="btn-toggle">🌙 Modus wechseln</button>
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</header>
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<main>
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<div class="theme-card">
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<h2 style="font-size: 1.3rem; margin-bottom: 8px;">Design Token Architektur</h2>
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<p style="color: var(--text-muted); font-size: 0.95rem; margin-bottom: 16px;">
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Farbwerte werden zentral definiert. Komponenten referenzieren lediglich Variablen-Namen.
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</p>
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<button class="btn-toggle" style="font-size: 0.85rem; padding: 6px 12px;">Aktion ausführen</button>
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</div>
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</main>
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</div>
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<script>
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/* 🎯 TEILZIEL 5: Theme-Toggle Logik mit JavaScript */
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const toggleBtn = document.getElementById("theme-toggle");
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function toggleTheme() {
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const current = document.documentElement.getAttribute("data-theme");
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const nextTheme = current === "dark" ? "light" : "dark";
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document.documentElement.setAttribute("data-theme", nextTheme);
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toggleBtn.textContent = nextTheme === "dark" ? "☀️ Light Mode" : "🌙 Dark Mode";
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}
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if (toggleBtn) {
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toggleBtn.addEventListener("click", toggleTheme);
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}
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</script>
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</body>
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</html>
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