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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    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: 0.5rem;
    text-decoration: none;
    color: #2563eb;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo img {
    display: block;
}

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

.nav-link {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link:focus {
    color: #2563eb;
    border-bottom-color: #2563eb;
}

.nav-link.active {
    color: #2563eb;
    border-bottom-color: #2563eb;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background: #1d4ed8;
    transform: translateY(-1px);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background: #2563eb;
    color: white;
}

.btn-outline {
    background: transparent;
    color: #4b5563;
    border: 2px solid #d1d5db;
}

.btn-outline:hover,
.btn-outline:focus {
    background: #f3f4f6;
    border-color: #9ca3af;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 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;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-text p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

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

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

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1f2937;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

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

/* Featured Courses */
.featured-courses {
    padding: 4rem 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.section-header p {
    font-size: 1.25rem;
    color: #6b7280;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.course-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

.course-content {
    padding: 1.5rem;
}

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

.course-category {
    background: #dbeafe;
    color: #1e40af;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.course-difficulty {
    font-size: 0.875rem;
    color: #6b7280;
}

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

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

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

.course-duration,
.course-price {
    font-size: 0.875rem;
    color: #6b7280;
}

.course-price {
    font-weight: 700;
    color: #059669;
    font-size: 1.125rem;
}

.course-actions {
    display: flex;
    gap: 0.5rem;
}

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

/* CTA Section */
.cta {
    background: #1f2937;
    color: white;
    padding: 4rem 0;
    text-align: center;
}

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

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

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Courses Catalog */
.courses-catalog {
    padding: 2rem 0 4rem;
}

.catalog-controls {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.search-box {
    position: relative;
    margin-bottom: 1rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 1rem;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.search-input:focus {
    outline: none;
    border-color: #2563eb;
}

.search-btn {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
}

.filter-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

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

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

.filter-select {
    padding: 0.75rem;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.filter-select:focus {
    outline: none;
    border-color: #2563eb;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: #6b7280;
}

/* Course Detail */
.breadcrumb {
    background: #f9fafb;
    padding: 1rem 0;
}

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

.breadcrumb-list li::after {
    content: ">";
    margin-left: 0.5rem;
    color: #6b7280;
}

.breadcrumb-list li:last-child::after {
    display: none;
}

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

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

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

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

.course-info h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.course-sidebar {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    height: fit-content;
    position: sticky;
    top: 6rem;
}

.course-price-info {
    text-align: center;
    margin-bottom: 2rem;
}

.current-price {
    font-size: 2rem;
    font-weight: 800;
    color: #059669;
    margin-bottom: 1rem;
}

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

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

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

.course-sections {
    display: grid;
    gap: 3rem;
}

.course-section {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.course-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.course-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.course-section ul {
    list-style-position: inside;
    color: #4b5563;
}

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

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

.curriculum-item {
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

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

.instructor-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #6b7280;
}

.instructor-details h3 {
    margin-bottom: 0.5rem;
}

.faq-item {
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
}

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

.faq-answer {
    padding: 0 1rem 1rem;
    color: #6b7280;
    display: none;
}

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

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

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

.not-found-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #ef4444;
}

.not-found-content p {
    font-size: 1.25rem;
    color: #6b7280;
    margin-bottom: 2rem;
}

.not-found-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Checkout */
.checkout {
    padding: 2rem 0 4rem;
    background: #f9fafb;
}

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

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

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

.step {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    background: white;
    color: #6b7280;
}

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

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

.step-number {
    font-weight: 700;
}

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

.billing-form,
.payment-form {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.billing-form h2,
.payment-form h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: #1f2937;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #ef4444;
}

.error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

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

.order-summary,
.billing-summary,
.trust-badges {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.order-summary h3,
.billing-summary h4,
.trust-badges h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

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

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

.trust-icons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #059669;
    font-weight: 600;
}

.payment-methods {
    margin-bottom: 2rem;
}

.payment-methods h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

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

.security-icon {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: #059669;
    font-weight: 600;
    font-size: 0.875rem;
}

.checkbox-group {
    margin: 2rem 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.875rem;
    line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #d1d5db;
    border-radius: 0.25rem;
    position: relative;
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: #2563eb;
    border-color: #2563eb;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: "✓";
    position: absolute;
    color: white;
    font-size: 12px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.demo-notice {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
}

.demo-notice p {
    color: #92400e;
    font-weight: 600;
    margin: 0;
}

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

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

.success-icon {
    font-size: 4rem;
    margin-bottom: 2rem;
}

.success-content h1 {
    font-size: 3rem;
    color: #059669;
    margin-bottom: 1rem;
}

.success-message {
    font-size: 1.25rem;
    color: #6b7280;
    margin-bottom: 3rem;
}

.order-details {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 3rem;
    text-align: left;
}

.order-details h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: #1f2937;
    text-align: center;
}

.next-steps {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 3rem;
    text-align: left;
}

.next-steps h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #1f2937;
    text-align: center;
}

.steps-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.step-number {
    width: 2rem;
    height: 2rem;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

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

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

.support-info {
    background: #f3f4f6;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
}

.support-info h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.support-info p {
    color: #6b7280;
}

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

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

/* About Page */
.about-content {
    padding: 2rem 0 4rem;
}

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

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

.about-section p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: #4b5563;
    margin-bottom: 1.5rem;
}

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

.offering-item,
.reason-item {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.offering-item h3,
.reason-item h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.reason-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.approach-list,
.commitment-list {
    list-style: none;
    margin-top: 1rem;
}

.approach-list li,
.commitment-list li {
    padding: 0.5rem 0;
    color: #4b5563;
    border-left: 4px solid #2563eb;
    padding-left: 1rem;
    margin-bottom: 0.5rem;
}

.cta-section {
    background: #f9fafb;
    padding: 3rem;
    border-radius: 1rem;
    text-align: center;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.cta-section p {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 2rem;
}

/* Contact Page */
.contact-content {
    padding: 2rem 0 4rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.contact-form-section,
.contact-info-section {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.contact-form-section h2,
.contact-info-section h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: #1f2937;
}

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

.contact-success {
    background: #d1fae5;
    border: 1px solid #059669;
    padding: 2rem;
    border-radius: 0.5rem;
    text-align: center;
}

.contact-success h3 {
    color: #059669;
    margin-bottom: 1rem;
}

.contact-success p {
    color: #047857;
    margin: 0;
}

.contact-method {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.contact-method:last-child {
    border-bottom: none;
}

.contact-method h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.contact-method p {
    color: #4b5563;
    margin-bottom: 0.25rem;
}

.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;
}

.support-hours {
    background: #f9fafb;
    padding: 1.5rem;
    border-radius: 0.5rem;
}

.support-hours h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.hours-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hours-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
}

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

.time {
    color: #6b7280;
}

.contact-faq-section {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

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

.faq-item {
    background: #f9fafb;
    padding: 1.5rem;
    border-radius: 0.5rem;
}

.faq-item h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.faq-item p {
    font-size: 0.875rem;
    color: #6b7280;
    margin: 0;
}

/* FAQ Page */
.faq-content {
    padding: 2rem 0 4rem;
}

.faq-search {
    margin-bottom: 2rem;
}

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

.faq-category-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid #d1d5db;
    background: white;
    color: #6b7280;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

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

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

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

.faq-contact h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.faq-contact p {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 2rem;
}

.contact-options {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Legal Pages */
.legal-content {
    padding: 2rem 0 4rem;
}

.legal-document {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.legal-document h2 {
    font-size: 1.75rem;
    margin: 2rem 0 1rem;
    color: #1f2937;
}

.legal-document h3 {
    font-size: 1.25rem;
    margin: 1.5rem 0 1rem;
    color: #374151;
}

.legal-document p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: #4b5563;
}

.legal-document ul {
    margin-bottom: 1rem;
    padding-left: 2rem;
    color: #4b5563;
}

.legal-document li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.contact-details {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 0.5rem;
    margin: 2rem 0;
}

.contact-details p {
    margin-bottom: 0.5rem;
}

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

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

.policy-footer {
    background: #f3f4f6;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-top: 2rem;
    text-align: center;
}

.policy-footer p {
    color: #6b7280;
    font-size: 0.875rem;
    margin: 0;
}

.important-notice {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    padding: 2rem;
    border-radius: 0.5rem;
    margin: 2rem 0;
}

.important-notice h3 {
    color: #92400e;
    margin-bottom: 1rem;
}

.important-notice p {
    color: #92400e;
    margin: 0;
}

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

.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;
    color: white;
}

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

.contact-info p {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.contact-info a {
    color: #93c5fd;
    text-decoration: none;
}

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

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

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

.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #93c5fd;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: #9ca3af;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav {
        display: none;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

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

    .course-header,
    .checkout-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .checkout-steps {
        flex-direction: column;
        align-items: center;
    }

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

    .hero-actions,
    .not-found-actions,
    .success-actions,
    .contact-options {
        flex-direction: column;
    }

    .filter-controls {
        grid-template-columns: 1fr;
    }

    .results-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .faq-categories {
        justify-content: center;
    }

    .steps-list {
        gap: 1rem;
    }

    .step-item {
        flex-direction: column;
        text-align: center;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 1.75rem;
    }

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

    .course-card {
        margin-bottom: 1rem;
    }

    .course-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .checkout-steps {
        gap: 1rem;
    }

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

    .legal-document {
        padding: 1.5rem;
    }

    .contact-details {
        padding: 1rem;
    }
}

/* Focus States for Accessibility */
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .checkout-sidebar,
    .course-sidebar {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.4;
    }

    .container {
        max-width: none;
        padding: 0;
    }

    .page-header {
        background: none;
        color: black;
        padding: 1rem 0;
    }
}