/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary-color: #F59E0B;
    --success-color: #10B981;
    --danger-color: #EF4444;
    --text-dark: #1F2937;
    --text-gray: #6B7280;
    --text-light: #9CA3AF;
    --bg-white: #FFFFFF;
    --bg-gray: #F9FAFB;
    --bg-light: #F3F4F6;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header and Navigation */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mobile-menu-btn {
    display: none;
    background: none;
    color: var(--text-dark);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-gray);
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

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

.cart-btn {
    position: relative;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: background-color 0.3s ease;
}

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

.cart-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--danger-color);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 1.25rem;
    height: 1.25rem;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 0.25rem;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    padding: 4rem 0;
}

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

.hero-text h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

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

.hero-stats {
    display: flex;
    gap: 3rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.hero-image-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-illustration {
    width: 100%;
    max-width: 500px;
    height: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* Sections */
.features,
.courses-section,
.catalog-section,
.product-section,
.cart-section,
.thank-you-section {
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-gray);
}

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

.feature-card {
    text-align: center;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: var(--primary-color);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-gray);
}

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

.course-card {
    background: var(--bg-white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

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

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

.course-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.course-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

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

.course-description {
    color: var(--text-gray);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
    flex: 1;
}

.course-instructor {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-gray);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.course-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.course-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

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

.star {
    color: var(--border-color);
}

.star.filled {
    color: var(--secondary-color);
}

.rating-text {
    color: var(--text-gray);
    margin-left: 0.25rem;
}

.course-students {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-gray);
}

.course-details {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.course-detail-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--text-gray);
}

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

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

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

.price-original {
    font-size: 0.875rem;
    color: var(--text-light);
    text-decoration: line-through;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    padding: 4rem 0;
    text-align: center;
}

.cta-content {
    color: white;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.cta-section .btn-primary:hover {
    background: var(--bg-light);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    padding: 3rem 0;
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.page-description {
    font-size: 1.125rem;
    color: var(--text-gray);
}

/* Catalog Filters */
.catalog-filters {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

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

.filter-label {
    font-weight: 600;
    color: var(--text-dark);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    background: var(--bg-light);
    color: var(--text-gray);
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.filter-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--bg-white);
    color: var(--text-dark);
    font-size: 0.9375rem;
}

/* No Results */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-gray);
}

.no-results svg {
    margin: 0 auto 1rem;
    color: var(--text-light);
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* Product Page */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-gray);
    padding: 1rem 0;
}

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

.product-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 3rem;
}

.product-main {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.product-image-large {
    position: relative;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.product-image-large img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.product-info {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
}

.product-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.product-meta {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

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

.rating-number {
    font-weight: 700;
    color: var(--text-dark);
    margin-left: 0.25rem;
}

.rating-count {
    color: var(--text-gray);
}

.product-students {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-gray);
}

.product-description {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.product-instructor {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.product-instructor h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

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

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

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

.instructor-info p {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.product-features h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-gray);
}

.features-list svg {
    color: var(--success-color);
    flex-shrink: 0;
}

/* Product Reviews */
.product-reviews {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
}

.reviews-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.reviews-summary {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.reviews-average {
    text-align: center;
}

.average-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.average-stars {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 0.5rem;
}

.average-text {
    color: var(--text-gray);
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.review-item {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.review-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.review-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

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

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.author-name {
    font-weight: 600;
    color: var(--text-dark);
}

.review-date {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.review-rating {
    display: flex;
    gap: 2px;
}

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

/* Sidebar */
.product-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 1.5rem;
}

.sidebar-price {
    display: flex;
    flex-direction: column;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-price .price-current {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.sidebar-price .price-original {
    font-size: 1rem;
}

.price-discount {
    display: inline-block;
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.sidebar-details {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.sidebar-details h4 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.details-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.details-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-gray);
    font-size: 0.9375rem;
}

.details-list svg {
    color: var(--primary-color);
    flex-shrink: 0;
}

/* Cart Page */
.empty-cart {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-cart svg {
    margin: 0 auto 1.5rem;
    color: var(--text-light);
}

.empty-cart h2 {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

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

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

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cart-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cart-item {
    background: var(--bg-white);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    display: grid;
    grid-template-columns: 120px 1fr auto auto;
    gap: 1.5rem;
    align-items: center;
}

.cart-item-image {
    border-radius: 0.5rem;
    overflow: hidden;
}

.cart-item-image img {
    width: 120px;
    height: 90px;
    object-fit: cover;
}

.cart-item-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.cart-item-instructor {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.cart-item-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
}

.item-category {
    background: var(--bg-light);
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    color: var(--text-gray);
}

.item-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-gray);
}

.item-rating svg {
    color: var(--secondary-color);
}

.item-duration {
    color: var(--text-gray);
}

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

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

.cart-item-price .price-original {
    font-size: 0.875rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.cart-item-remove {
    background: none;
    color: var(--text-gray);
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.cart-item-remove:hover {
    background: var(--bg-light);
    color: var(--danger-color);
}

.cart-summary {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.summary-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 1.5rem;
}

.summary-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    color: var(--text-gray);
}

.summary-divider {
    height: 1px;
    background: var(--border-color);
    margin: 1.5rem 0;
}

.summary-total {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
}

.text-success {
    color: var(--success-color);
}

.summary-features {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-gray);
    font-size: 0.875rem;
}

.feature-item svg {
    color: var(--success-color);
    flex-shrink: 0;
}

.trust-badges {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
}

.trust-text {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.badges {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    background: var(--bg-white);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

/* Thank You Page */
.thank-you-card {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    color: var(--success-color);
}

.thank-you-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.thank-you-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.order-info {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
}

.order-number,
.order-date {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.order-number:last-child,
.order-date:last-child {
    margin-bottom: 0;
}

.order-info .label {
    color: var(--text-gray);
    font-weight: 500;
}

.order-info .value {
    color: var(--text-dark);
    font-weight: 700;
}

.order-summary {
    margin: 2rem 0;
    text-align: left;
}

.order-summary h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.order-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.order-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 0.5rem;
}

.order-item .item-image {
    width: 80px;
    height: 60px;
    border-radius: 0.25rem;
    overflow: hidden;
}

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

.order-item .item-details {
    flex: 1;
}

.order-item h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.order-item p {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.order-item .item-price {
    font-weight: 700;
    color: var(--primary-color);
}

.order-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 1.25rem;
    font-weight: 700;
}

.total-amount {
    color: var(--primary-color);
}

.next-steps {
    margin: 2rem 0;
}

.next-steps h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.step {
    text-align: center;
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: var(--primary-color);
}

.step h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.step p {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.thank-you-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.support-info {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-top: 2rem;
}

.support-info p {
    margin-bottom: 0.5rem;
}

.contact-details {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 500;
}

.contact-link:hover {
    color: var(--primary-dark);
}

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

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.footer-social a:hover {
    background: var(--primary-color);
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

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

.footer-contact {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

.text-center {
    text-align: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .cart-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .catalog-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cart-item {
        grid-template-columns: 1fr;
    }
    
    .cart-item-image img {
        width: 100%;
        height: 200px;
    }
    
    .thank-you-card {
        padding: 2rem 1.5rem;
    }
    
    .thank-you-title {
        font-size: 1.75rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .thank-you-actions {
        flex-direction: column;
    }
    
    .contact-details {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .page-title {
        font-size: 1.75rem;
    }
}