/* Mobile Styles */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        text-align: center;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        background: #0056b3;
        position: absolute;
        top: 60px;
        left: 0;
    }

    .nav-links li {
        margin: 10px 0;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links.active {
        display: flex;
    }

    .hero {
        height: 300px;
        padding: 20px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .course-grid {
        padding: 20px;
        grid-template-columns: 1fr;
    }
}