* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --secondary-color: #10B981;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --border-color: #E5E7EB;
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --error-color: #EF4444;
    --warning-color: #F59E0B;
    --success-color: #10B981;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background: var(--bg-white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 1.5rem;
    font-weight: 700;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.cart-link {
    position: relative;
}

.cart-badge {
    position: absolute;
    top: -8px;
    right: -12px;
    background: var(--error-color);
    color: white;
    border-radius: 10px;
    padding: 2px 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.main-content {
    min-height: calc(100vh - 400px);
}

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 4rem 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.highlight {
    color: var(--warning-color);
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.stat svg {
    color: var(--warning-color);
}

.stat div {
    display: flex;
    flex-direction: column;
}

.stat strong {
    font-size: 1.5rem;
}

.stat span {
    font-size: 0.9rem;
    opacity: 0.9;
}

.hero-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--bg-light);
}

.btn-outline {
    background: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.features {
    padding: 5rem 0;
    background: var(--bg-white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
}

.featured-courses {
    padding: 5rem 0;
    background: var(--bg-light);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.course-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.discount-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--error-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.course-content {
    padding: 1.5rem;
}

.course-category {
    display: inline-block;
    background: var(--primary-light);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    text-transform: capitalize;
}

.course-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.course-title a {
    color: var(--text-dark);
    text-decoration: none;
}

.course-title a:hover {
    color: var(--primary-color);
}

.course-instructor {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.course-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.course-rating,
.course-students,
.course-details {
    display: flex;
    align-items: center;
    gap: 4px;
}

.reviews-count {
    color: var(--text-light);
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.course-price {
    display: flex;
    flex-direction: column;
}

.original-price {
    text-decoration: line-through;
    color: var(--text-light);
    font-size: 0.9rem;
}

.current-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.testimonials {
    padding: 5rem 0;
    background: var(--bg-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
}

.testimonial-rating {
    display: flex;
    gap: 4px;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--text-dark);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author strong {
    display: block;
    margin-bottom: 4px;
}

.testimonial-author span {
    color: var(--text-light);
    font-size: 0.9rem;
}

.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.catalog {
    padding: 3rem 0;
}

.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
}

.catalog-sidebar {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 12px;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.filter-section {
    margin-bottom: 2rem;
}

.filter-section h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.category-list {
    list-style: none;
}

.category-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-dark);
    transition: all 0.3s;
    margin-bottom: 0.5rem;
}

.category-link:hover,
.category-link.active {
    background: var(--primary-color);
    color: white;
}

.category-link .count {
    background: var(--bg-light);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.85rem;
}

.category-link.active .count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
}

.checkbox-label input {
    cursor: pointer;
}

.catalog-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
}

.search-box {
    flex: 1;
    position: relative;
    max-width: 400px;
}

.search-box svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.search-box input {
    width: 100%;
    padding: 12px 12px 12px 44px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.results-info {
    color: var(--text-light);
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-light);
}

.no-results svg {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.product-page {
    padding: 2rem 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.product-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 3rem;
}

.product-main {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
}

.product-image {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.product-image img {
    width: 100%;
    height: auto;
}

.product-info h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.product-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.product-meta {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.rating-large {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rating-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stars {
    display: flex;
    gap: 2px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
}

.instructor-info {
    margin-bottom: 3rem;
}

.instructor-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.instructor-card {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.instructor-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.what-you-learn {
    margin-bottom: 3rem;
}

.what-you-learn h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.learning-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.learning-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    background: var(--bg-light);
    border-radius: 8px;
}

.curriculum {
    margin-bottom: 3rem;
}

.curriculum h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.curriculum-stats {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.curriculum-list {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.curriculum-item {
    border-bottom: 1px solid var(--border-color);
}

.curriculum-item:last-child {
    border-bottom: none;
}

.curriculum-header {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-light);
}

.reviews-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.review-card {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.review-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary-light);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.review-rating {
    display: flex;
    align-items: center;
    gap: 8px;
}

.review-date {
    color: var(--text-light);
    font-size: 0.9rem;
}

.review-text {
    color: var(--text-dark);
    line-height: 1.6;
}

.product-sidebar .sticky {
    position: sticky;
    top: 100px;
}

.purchase-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.price-section {
    margin-bottom: 1.5rem;
}

.discount-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.discount-percentage {
    background: var(--error-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
}

.time-left {
    color: var(--text-light);
    font-size: 0.9rem;
}

.prices {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.original-price-large {
    text-decoration: line-through;
    color: var(--text-light);
    font-size: 1.2rem;
}

.current-price-large {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.course-includes {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.course-includes h4 {
    margin-bottom: 1rem;
}

.course-includes ul {
    list-style: none;
}

.course-includes li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    color: var(--text-dark);
}

.related-courses {
    margin-top: 4rem;
}

.related-courses h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.cart-page {
    padding: 3rem 0;
}

.empty-cart {
    text-align: center;
    padding: 5rem 2rem;
    background: var(--bg-white);
    border-radius: 12px;
}

.empty-cart svg {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.empty-cart h2 {
    margin-bottom: 1rem;
}

.empty-cart p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.cart-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
}

.cart-items {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
}

.cart-items h2 {
    margin-bottom: 1.5rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 150px 1fr auto;
    gap: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.item-image {
    width: 150px;
    height: 100px;
    border-radius: 8px;
    overflow: hidden;
}

.item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.item-details h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.item-details h3 a {
    color: var(--text-dark);
    text-decoration: none;
}

.item-instructor {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.item-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.item-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-end;
}

.item-quantity {
    display: flex;
    align-items: center;
    gap: 8px;
}

.item-quantity select {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
}

.btn-remove {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--error-color);
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-remove:hover {
    text-decoration: underline;
}

.cart-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.cart-summary,
.checkout-form {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
}

.cart-summary h3,
.checkout-form h3 {
    margin-bottom: 1.5rem;
}

.summary-line {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
}

.summary-total {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-top: 2px solid var(--border-color);
    margin-top: 1rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.payment-info {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-light);
    text-align: center;
}

.thank-you-page {
    padding: 3rem 0;
}

.success-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 12px;
}

.success-icon {
    text-align: center;
    margin-bottom: 2rem;
}

.success-content h1 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.success-message {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.order-details {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 3rem;
}

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.order-number {
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
}

.order-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.info-section h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.info-section p {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.order-items {
    margin-top: 2rem;
}

.order-items h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.order-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-white);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.item-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.item-info img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
}

.item-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.item-info p {
    font-size: 0.9rem;
    color: var(--text-light);
}

.item-price {
    text-align: right;
}

.order-total {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

.total-line {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
}

.grand-total {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border-color);
}

.next-steps {
    margin-bottom: 3rem;
}

.next-steps h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.step-icon {
    margin-bottom: 1rem;
}

.step h3 {
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.step p {
    color: var(--text-dark);
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.support-info {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.support-info h3 {
    margin-bottom: 1rem;
}

.support-info p {
    color: var(--text-dark);
}

.site-footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
}

.footer-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--warning-color);
    font-weight: 600;
}

.footer-links {
    list-style: none;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: block;
    padding: 0.5rem 0;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: white;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .catalog-layout {
        grid-template-columns: 1fr;
    }
    
    .catalog-sidebar {
        position: static;
    }
    
    .product-layout {
        grid-template-columns: 1fr;
    }
    
    .cart-layout {
        grid-template-columns: 1fr;
    }
    
    .cart-item {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .catalog-toolbar {
        flex-direction: column;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}