:root {
            --bg-color: #000000ed;
            --card-bg: #000000a1;
            --text-color: #ffffff;
            --primary-color: #3498db;
            --accent-lock: #e74c3c;
            --accent-cloud: #2ecc71;
            --accent-mail: #f39c12;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
        }

        header {
            text-align: center;
            margin-bottom: 30px;
        }

        header h1 {
            margin: 0;
            font-size: 2.5rem;
            color: #b0d3f6;
        }

        header p {
            color: #b7c3c4;
            margin-top: 5px;
        }

        .container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            max-width: 900px;
            width: 90%;
        }

        .card {
            background-color: var(--card-bg);
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            padding: 25px;
            text-align: center;
            transition: transform 0.2s, box-shadow 0.2s;
            text-decoration: none;
            color: inherit;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
        }

        .icon {
            font-size: 3rem;
            margin-bottom: 15px;
        }

        .card h2 {
            margin: 0 0 10px 0;
            font-size: 1.5rem;
        }

        .card p {
            margin: 0;
            color: #ccd8d8;
            font-size: 0.95rem;
            line-height: 1.4;
        }

        /* Farbliche Akzente für die Icons */
        .pwd-icon { color: var(--accent-lock); }
        .cloud-icon { color: var(--accent-cloud); }
        .mail-icon { color: var(--accent-mail); }

        footer {
            margin-top: 5px;
            font-size: 0.85rem;
            color: #bdc3c7;
        }