/*
 * responsive.css - Responsive Design
 * Frontend Developer: Nguyễn Đức Thắng
 */

/* Tablet */
@media (max-width: 1024px) {
    .container {
        padding: 0 1rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-image {
        order: -1;
    }

    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }

    .paths-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }

    .nav-menu {
        gap: 1rem;
    }

    .search-box input {
        width: 150px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .search-box {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .category-card {
        padding: 1.5rem 1rem;
    }

    .category-icon {
        font-size: 2rem;
    }

    .courses-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .paths-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group select {
        width: 100%;
    }

    .path-meta {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .meta-item {
        flex-direction: row;
        justify-content: flex-start;
        gap: 0.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .cta-title {
        font-size: 1.5rem;
    }

    .cta-description {
        font-size: 1rem;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 0.9375rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }

    .page-title {
        font-size: 2rem;
    }

    .path-title {
        font-size: 1.125rem;
    }
}

/* Mobile Menu Styles */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-menu ul li a {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .cta-section,
    .filter-section {
        display: none;
    }

    .container {
        max-width: 100%;
    }
}