body { background: #f4f7f6; }
        .navbar { background: linear-gradient(90deg, #6a11cb 0%, #2575fc 100%); }
        .btn-primary { background-color: #6a11cb; border: none; }
        .card { border-radius: 15px; border: none; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
        th { background-color: #2575fc !important; color: white; }