.hero-gradient {
            background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        }
        .section-padding {
            padding: 4rem 0;
        }
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
        }
        .modal.active {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .modal-content {
            background: white;
            padding: 2rem;
            border-radius: 1rem;
            max-width: 500px;
            width: 90%;
            max-height: 90vh;
            overflow-y: auto;
        }
        .nav-link {
            transition: color 0.3s ease;
        }
        .nav-link:hover {
            color: #3b82f6;
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.active {
            display: block;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 2rem 0;
            }
        }