it-praxisportal/courses/html_css/15_moderne_ui_komponenten/aufgabe.html

<!DOCTYPE html>
<html lang="de">
<head>
  <link rel="icon" type="image/svg+xml" href="../../../assets/favicon.svg">
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Übung: Moderne UI-Komponenten &amp; Glassmorphism</title>
  <style>
    :root {
      --primary: #6366f1;
      --bg: #0b0f19;
      --text: #f8fafc;
      --text-muted: #94a3b8;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, sans-serif;
      background: radial-gradient(circle at 20% 20%, #4338ca 0%, #0b0f19 70%);
      color: var(--text);
      min-height: 100vh;
      padding: 40px 20px;
    }

    .container {
      max-width: 800px;
      margin: 0 auto;
    }

    /* ==========================================================
 * 🎯 TEILZIEL 1: Glassmorphism Card (.glass-card)
       - background: rgba(255, 255, 255, 0.08)
       - backdrop-filter: blur(16px) saturate(180%)
       - -webkit-backdrop-filter: blur(16px) saturate(180%)
       - border: 1px solid rgba(255, 255, 255, 0.18)
       - border-radius: 16px
       - box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37)
       ========================================================== */
    .glass-card {
      padding: 30px;
      margin-bottom: 28px;

      /* TODO 1: Glassmorphism Eigenschaften hier einfügen */
      /* background: ...; */
      /* backdrop-filter: ...; */
      /* border: ...; */
      /* border-radius: ...; */
      /* box-shadow: ...; */
    }

    /* ==========================================================
 * 🎯 TEILZIEL 2: Natives HTML5 <dialog> & ::backdrop
       - dialog: background: #1e293b, color: white, border: 1px solid rgba(255,255,255,0.2), border-radius: 12px, padding: 24px
       - dialog::backdrop: background: rgba(15, 23, 42, 0.8), backdrop-filter: blur(8px)
       ========================================================== */
    dialog {
      /* TODO 2a: Dialog Styling */
      /* background: ...; */
      /* color: ...; */
      /* border: ...; */
      /* border-radius: ...; */
      /* padding: ...; */
      max-width: 450px;
      margin: auto;
    }

    dialog::backdrop {
      /* TODO 2b: Backdrop Abdunklung & Weichzeichner */
      /* background: ...; */
      /* backdrop-filter: ...; */
    }

    /* ==========================================================
 * 🎯 TEILZIEL 3: Pure CSS Tooltip mit [data-tooltip]
       - [data-tooltip]: position: relative; cursor: help;
       - [data-tooltip]::after:
           content: attr(data-tooltip);
           position: absolute;
           bottom: 130%;
           left: 50%;
           transform: translateX(-50%);
           background: #0f172a;
           color: white;
           padding: 6px 12px;
           border-radius: 6px;
           font-size: 0.8rem;
           white-space: nowrap;
           opacity: 0;
           pointer-events: none;
           transition: opacity 0.2s ease;
       - [data-tooltip]:hover::after: opacity: 1;
       ========================================================== */
    [data-tooltip] {
      position: relative;
      cursor: help;
    }

    [data-tooltip]::after {
      /* TODO 3: Tooltip Pseudo-Element */
      /* content: attr(data-tooltip); */
      /* position: absolute; */
      /* opacity: 0; */
      /* transition: opacity 0.2s ease; */
    }

    [data-tooltip]:hover::after {
      /* TODO 3b: Hover-Sichtbarkeit */
      /* opacity: 1; */
    }

    /* ==========================================================
 * 🎯 TEILZIEL 4: Badge-System (.badge, .badge--success, .badge--purple)
       - .badge: display: inline-flex; align-items: center; padding: 4px 10px; border-radius: 9999px; font-size: 0.75rem; font-weight: 700;
       - .badge--success: background: rgba(16, 185, 129, 0.2); color: #34d399; border: 1px solid #10b981;
       - .badge--purple: background: rgba(139, 92, 246, 0.2); color: #c4b5fd; border: 1px solid #8b5cf6;
       ========================================================== */
    .badge {
      /* TODO 4a: Basis Badge */
      /* display: inline-flex; */
      /* padding: 4px 10px; */
      /* border-radius: 9999px; */
    }

    .badge--success {
      /* TODO 4b: Success Badge */
      /* background: ...; */
      /* color: ...; */
    }

    .badge--purple {
      /* TODO 4c: Purple Badge */
      /* background: ...; */
      /* color: ...; */
    }

    .btn {
      background: var(--primary);
      color: white;
      border: none;
      padding: 10px 18px;
      border-radius: 8px;
      font-weight: 600;
      cursor: pointer;
      margin-top: 16px;
    }
  </style>
</head>
<body>
  <div class="container">
    <header style="margin-bottom: 24px;">
      <span class="badge badge--purple">Modern UI Lab</span>
      <h1 style="font-size: 2rem; margin-top: 8px;">Glassmorphism &amp; Modale Komponenten</h1>
    </header>

    <main>
      <!-- Glassmorphism Card -->
      <div class="glass-card">
        <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px;">
          <h2 style="font-size: 1.3rem;">Glassmorphism Dashboard</h2>
          <span class="badge badge--success">Live Preview</span>
        </div>
        <p style="color: var(--text-muted); font-size: 0.95rem; margin-bottom: 16px;">
          Halbtransparenz und <span data-tooltip="Weichzeichnen von Elementen im Hintergrund" style="text-decoration: underline dotted #818cf8; color: #818cf8;">backdrop-filter</span> erzeugen edle Schärfentiefe.
        </p>
        <button id="open-modal-btn" class="btn">Modalen Dialog öffnen</button>
      </div>

      <!-- Native Dialog Modal -->
      <dialog id="demo-modal">
        <h3 style="font-size: 1.2rem; margin-bottom: 8px;">✨ Natives HTML5 Modal</h3>
        <p style="color: #94a3b8; font-size: 0.9rem; margin-bottom: 20px;">
          Dieser Dialog nutzt das Standard-HTML5 &lt;dialog&gt;-Element mit echtem Tastatur-Fokus und ESC-Schließfunktion.
        </p>
        <button id="close-modal-btn" class="btn" style="background: #e11d48;">Schließen</button>
      </dialog>
    </main>
  </div>

  <script>
    const modal = document.getElementById("demo-modal");
    const openBtn = document.getElementById("open-modal-btn");
    const closeBtn = document.getElementById("close-modal-btn");

    if (openBtn && modal) {
      openBtn.addEventListener("click", () => modal.showModal());
    }
    if (closeBtn && modal) {
      closeBtn.addEventListener("click", () => modal.close());
    }
  </script>
</body>
</html>