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

html {
    font-size: 16px;
    line-height: 1.6;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #333;
    background-color: #fff;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: #1f2937;
    text-decoration: none;
}

.logo img {
    display: block;
}

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

.nav-link {
    color: #6b7280;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: #2563eb;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: #374151;
    transition: all 0.2s;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
}

.btn-secondary:hover {
    background: #e5e7eb;
}

.btn-outline {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Page Header */
.page-header {
    background: #f8fafc;
    padding: 3rem 0;
    text-align: center;
    border-bottom: 1px solid #e5e7eb;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.125rem;
    color: #6b7280;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: #f9fafb;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature-card p {
    color: #6b7280;
}

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

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.section-header p {
    font-size: 1.125rem;
    color: #6b7280;
}

.section-footer {
    text-align: center;
    margin-top: 3rem;
}

.featured-courses {
    padding: 4rem 0;
}

.trust-section {
    padding: 4rem 0;
    background: #f9fafb;
}

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

.trust-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #1f2937;
}

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

.trust-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.trust-item p {
    color: #6b7280;
}

/* Course Cards */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.course-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.course-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.course-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.course-content {
    padding: 1.5rem;
}

.course-tag {
    display: inline-block;
    background: #dbeafe;
    color: #1e40af;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.course-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.course-title a {
    color: inherit;
    text-decoration: none;
}

.course-title a:hover {
    color: #2563eb;
}

.course-description {
    color: #6b7280;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: #6b7280;
}

.course-instructor {
    font-weight: 500;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #059669;
}

/* Course Detail Page */
.breadcrumb {
    background: #f8fafc;
    padding: 1rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    align-items: center;
}

.breadcrumb-list li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: #9ca3af;
}

.breadcrumb-list a {
    color: #2563eb;
    text-decoration: none;
}

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

.course-detail {
    padding: 2rem 0;
}

.course-detail-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.course-main-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 1rem;
}

.course-main-content .course-meta {
    margin-bottom: 2rem;
    font-size: 1rem;
}

.course-sidebar {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 1rem;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.course-sidebar .course-image {
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.course-sidebar .course-price {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.course-info-list {
    list-style: none;
    margin-bottom: 2rem;
}

.course-info-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.course-info-list li:last-child {
    border-bottom: none;
}

.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.content-section ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.content-section li {
    margin-bottom: 0.5rem;
}

.curriculum-list {
    list-style: none;
    margin-left: 0;
}

.curriculum-item {
    background: #f9fafb;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    border-left: 4px solid #2563eb;
}

.instructor-bio {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 1rem;
    margin-top: 1rem;
}

.instructor-bio h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.faq-item {
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 1rem;
}

.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 1rem 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    padding-bottom: 1rem;
    color: #6b7280;
    display: none;
}

.faq-answer.active {
    display: block;
}

.faq-toggle {
    font-size: 1.5rem;
    transition: transform 0.2s;
}

.faq-question[aria-expanded="true"] .faq-toggle {
    transform: rotate(45deg);
}

.course-not-found {
    padding: 4rem 0;
    text-align: center;
}

.not-found-content h1 {
    font-size: 2rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.not-found-content p {
    color: #6b7280;
    margin-bottom: 2rem;
}

/* Catalog Filters */
.catalog-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: #f9fafb;
    border-radius: 1rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 600;
    color: #374151;
}

.search-input,
.filter-select {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.search-input:focus,
.filter-select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.catalog-results {
    margin-bottom: 2rem;
}

.results-info {
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: #6b7280;
}

/* Checkout Styles */
.checkout-container {
    padding: 2rem 0;
    background: #f9fafb;
    min-height: calc(100vh - 200px);
}

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

.checkout-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 2rem;
}

.checkout-steps {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.step {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: white;
    border-radius: 2rem;
    border: 2px solid #e5e7eb;
}

.step.active {
    border-color: #2563eb;
    background: #dbeafe;
}

.step.completed {
    border-color: #059669;
    background: #d1fae5;
}

.step-number {
    width: 24px;
    height: 24px;
    background: #e5e7eb;
    color: #6b7280;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.step.active .step-number {
    background: #2563eb;
    color: white;
}

.step.completed .step-number {
    background: #059669;
    color: white;
}

.step-label {
    font-weight: 600;
    color: #374151;
}

.checkout-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.checkout-section {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.checkout-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1.5rem;
}

.checkout-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input.error,
.form-group select.error {
    border-color: #dc2626;
}

.error-message {
    color: #dc2626;
    font-size: 0.875rem;
    display: none;
}

.error-message.show {
    display: block;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.checkbox-group label {
    font-weight: 400;
    line-height: 1.5;
}

.checkbox-group a {
    color: #2563eb;
    text-decoration: none;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

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

.order-summary,
.customer-info,
.trust-badges {
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.order-summary h3,
.customer-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.order-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.order-item:last-child {
    border-bottom: none;
    font-weight: 700;
    font-size: 1.125rem;
}

.order-item img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 0.5rem;
    margin-right: 1rem;
}

.item-info h4 {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.item-info p {
    color: #6b7280;
    font-size: 0.875rem;
}

.item-price {
    font-weight: 700;
    color: #059669;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.trust-badge:last-child {
    border-bottom: none;
}

.trust-icon {
    font-size: 1.5rem;
}

.trust-text {
    display: flex;
    flex-direction: column;
}

.trust-text strong {
    color: #1f2937;
    font-weight: 600;
}

.trust-text span {
    color: #6b7280;
    font-size: 0.875rem;
}

/* Payment Methods */
.payment-methods {
    margin-bottom: 2rem;
}

.accepted-cards {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 0.5rem;
}

.card-icons {
    display: flex;
    gap: 0.5rem;
}

/* Success Page */
.success-container {
    padding: 4rem 0;
    text-align: center;
}

.success-content {
    max-width: 800px;
    margin: 0 auto;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.success-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #059669;
    margin-bottom: 1rem;
}

.success-message {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 3rem;
}

.order-details {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 1rem;
    margin-bottom: 3rem;
    text-align: left;
}

.order-details h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
    text-align: center;
}

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

.next-steps h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 2rem;
}

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

.step-item {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.step-item .step-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.step-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.step-item p {
    color: #6b7280;
}

.success-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* About Page */
.about-content {
    padding: 2rem 0;
}

.about-section {
    margin-bottom: 4rem;
}

.about-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1.5rem;
}

.about-section p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #4b5563;
    margin-bottom: 1.5rem;
}

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

.offering-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.offering-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.offering-card p {
    color: #6b7280;
    font-size: 1rem;
}

.commitment-content {
    max-width: 800px;
}

.commitment-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.commitment-content h3:first-child {
    margin-top: 0;
}

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

.reason-item {
    padding: 1.5rem;
    background: #f9fafb;
    border-radius: 0.5rem;
    border-left: 4px solid #2563eb;
}

.reason-item strong {
    color: #1f2937;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Contact Page */
.contact-content {
    padding: 2rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.contact-form-section h2,
.contact-info-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-method {
    margin-bottom: 2rem;
}

.contact-method h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.contact-method p {
    color: #4b5563;
    line-height: 1.6;
}

.contact-method a {
    color: #2563eb;
    text-decoration: none;
}

.contact-method a:hover {
    text-decoration: underline;
}

.contact-note {
    font-size: 0.875rem;
    color: #6b7280;
    font-style: italic;
}

.faq-link {
    background: #f9fafb;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-top: 2rem;
}

.faq-link h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.faq-link a {
    color: #2563eb;
    text-decoration: none;
}

.faq-link a:hover {
    text-decoration: underline;
}

.form-success {
    text-align: center;
    padding: 2rem;
    background: #d1fae5;
    border-radius: 1rem;
    display: none;
}

.form-success.show {
    display: block;
}

.form-success .success-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.form-success h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #059669;
    margin-bottom: 0.5rem;
}

.form-success p {
    color: #047857;
}

/* FAQ Page */
.faq-content {
    padding: 2rem 0;
}

.faq-categories {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.faq-category-btn {
    padding: 0.75rem 1.5rem;
    background: #f3f4f6;
    border: none;
    border-radius: 2rem;
    font-weight: 600;
    color: #6b7280;
    cursor: pointer;
    transition: all 0.2s;
}

.faq-category-btn.active,
.faq-category-btn:hover {
    background: #2563eb;
    color: white;
}

.faq-section {
    display: none;
}

.faq-section.active {
    display: block;
}

.faq-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 2rem;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-footer {
    text-align: center;
    margin-top: 4rem;
    padding: 3rem;
    background: #f9fafb;
    border-radius: 1rem;
}

.faq-footer h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.faq-footer p {
    color: #6b7280;
    margin-bottom: 2rem;
}

/* Legal Pages */
.legal-content {
    padding: 2rem 0;
}

.legal-document {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

.legal-document h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1f2937;
    margin-top: 3rem;
    margin-bottom: 1rem;
}

.legal-document h2:first-child {
    margin-top: 0;
}

.legal-document h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.legal-document p {
    margin-bottom: 1rem;
    color: #4b5563;
}

.legal-document ul {
    margin-bottom: 1rem;
    margin-left: 2rem;
}

.legal-document li {
    margin-bottom: 0.5rem;
    color: #4b5563;
}

.contact-info {
    background: #f9fafb;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
}

.contact-info strong {
    color: #1f2937;
}

.contact-info a {
    color: #2563eb;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

.legal-footer {
    margin-top: 3rem;
    padding: 1.5rem;
    background: #f9fafb;
    border-radius: 0.5rem;
    font-style: italic;
    color: #6b7280;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: #d1d5db;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .course-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .course-sidebar {
        position: static;
    }
    
    .checkout-content {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .catalog-filters {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .checkout-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .success-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .trust-grid {
        grid-template-columns: 1fr;
    }
    
    .offerings-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-categories {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .hero-title {
        font-size: 1.875rem;
    }
    
    .page-header {
        padding: 2rem 0;
    }
    
    .page-header h1 {
        font-size: 1.75rem;
    }
    
    .checkout-container {
        padding: 1rem 0;
    }
    
    .checkout-section {
        padding: 1.5rem;
    }
    
    .order-summary,
    .customer-info,
    .trust-badges {
        padding: 1rem;
    }
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #000;
        color: #fff;
        border: 2px solid #000;
    }
    
    .btn-secondary {
        background: #fff;
        color: #000;
        border: 2px solid #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}