Aufgaben-Python/courses/html_css/10_css_grid_und_areas/musterloesung.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>Musterlösung: CSS Grid Matrix &amp; Areas</title>
  <style>
    :root {
      --primary: #3b82f6;
      --bg: #0b0f19;
      --surface: #131b2e;
      --surface-card: #1e293b;
      --text: #f8fafc;
      --text-muted: #94a3b8;
      --border: #1e293b;
      --accent: #10b981;
    }

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

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.5;
      padding: 20px;
    }

    /* 🎯 TEILZIEL 1 & 2: Dashboard 2D-Grid & Template Areas */
    .dashboard-layout {
      min-height: 90vh;
      display: grid;
      grid-template-columns: 240px 1fr;
      grid-template-rows: auto 1fr auto;
      grid-template-areas:
        "header  header"
        "sidebar main"
        "footer  footer";
      gap: 20px;
    }

    .dash-header {
      grid-area: header;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 16px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    }

    .dash-sidebar {
      grid-area: sidebar;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 20px;
    }

    .dash-main {
      grid-area: main;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 24px;
    }

    .dash-footer {
      grid-area: footer;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 14px 20px;
      text-align: center;
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    /* 🎯 TEILZIEL 3: Responsive Metrics-Grid mit auto-fit & minmax */
    .metrics-grid {
      margin-top: 20px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 16px;
    }

    .metric-card {
      background: var(--surface-card);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 18px;
      transition: transform 0.2s ease, border-color 0.2s ease;
    }

    .metric-card:hover {
      transform: translateY(-2px);
      border-color: var(--primary);
    }

    .metric-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .metric-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: #38bdf8;
      margin: 8px 0;
    }

    /* 🎯 TEILZIEL 4: Zellen-Überspannung mit grid-column */
    .metric-card--featured {
      grid-column: span 2;
      background: linear-gradient(135deg, #1e1b4b 0%, #1e293b 100%);
      border-color: #6366f1;
    }

    .nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .nav-list a {
      color: var(--text-muted);
      text-decoration: none;
      padding: 8px 12px;
      border-radius: 6px;
      display: block;
      transition: background 0.2s;
    }

    .nav-list a:hover {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text);
    }
  </style>
</head>
<body>
  <div class="dashboard-layout">
    <!-- Header -->
    <header class="dash-header">
      <h2 style="font-size: 1.2rem; color: #38bdf8;">📊 Analytics Hub</h2>
      <div style="font-size: 0.9rem; color: var(--text-muted);">Nutzer: Admin</div>
    </header>

    <!-- Sidebar -->
    <aside class="dash-sidebar">
      <h3 style="font-size: 0.9rem; margin-bottom: 14px; text-transform: uppercase; color: var(--text-muted);">Menü</h3>
      <ul class="nav-list">
        <li><a href="#">📈 Übersicht</a></li>
        <li><a href="#">👥 Kunden</a></li>
        <li><a href="#">⚙️ Einstellungen</a></li>
      </ul>
    </aside>

    <!-- Main -->
    <main class="dash-main">
      <h2>Übersicht Kennzahlen</h2>
      <p style="color: var(--text-muted); font-size: 0.9rem;">Echtzeit-Metriken deines SaaS-Produkts:</p>

      <div class="metrics-grid">
        <div class="metric-card metric-card--featured">
          <div class="metric-label">⭐ Gesamtumsatz (MRR) - Highlight</div>
          <div class="metric-val" style="color: #4ade80;">€ 48.250</div>
          <p style="font-size: 0.8rem; color: var(--text-muted);">+18.4% im Vergleich zum Vormonat</p>
        </div>

        <div class="metric-card">
          <div class="metric-label">Aktive Abonnenten</div>
          <div class="metric-val">1.420</div>
          <p style="font-size: 0.8rem; color: var(--text-muted);">+42 heute</p>
        </div>

        <div class="metric-card">
          <div class="metric-label">Server Uptime</div>
          <div class="metric-val">99.98%</div>
          <p style="font-size: 0.8rem; color: var(--text-muted);">Status: Optimal</p>
        </div>

        <div class="metric-card">
          <div class="metric-label">Support Tickets</div>
          <div class="metric-val">3</div>
          <p style="font-size: 0.8rem; color: var(--text-muted);">Alle zugewiesen</p>
        </div>
      </div>
    </main>

    <!-- Footer -->
    <footer class="dash-footer">
      &copy; 2026 Analytics Hub. Powered by CSS Grid.
    </footer>
  </div>
</body>
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