/
        header {
            background: rgba(10, 15, 30, 0.8);
            backdrop-filter: blur(10px);
            padding: 18px 30px;
            text-align: center;
            border-bottom: 1px solid rgba(74, 108, 247, 0.3);
            position: relative;
            z-index: 10;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
        }

        header h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin: 0;
            background: linear-gradient(90deg, #4a6c