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

html {
    font-size: 16px;
    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;
}

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

a {
    text-decoration: none;
    color: inherit;
}

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

ul {
    list-style: none;
}

/* 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;
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: #2563eb;
}

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

.nav-link {
    font-weight: 500;
    color: #64748b;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #2563eb;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
}

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

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

.btn-secondary {
    background: #f8fafc;
    color: #475569;
    border-color: #e2e8f0;
}

.btn-secondary:hover {
    background: #e2e8f0;
    color: #334155;
}

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

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 4rem 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.125rem;
    color: #64748b;
    margin-bottom: 2rem;
}

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

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

/* Features Section */
.features {
    padding: 5rem 0;
    background: #fff;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

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

.feature-card {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Featured Courses */
.featured-courses {
    padding: 5rem 0;
    background: #f8fafc;
}

.featured-courses h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

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

.course-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

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

.course-image img {
    width: 100%;
    height: 100%;
    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: #1d4ed8;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.course-difficulty {
    color: #64748b;
    font-size: 0.875rem;
}

.course-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.course-description {
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.course-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: #64748b;
}

.course-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #059669;
    margin-bottom: 1rem;
}

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

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

/* Trust Indicators */
.trust-indicators {
    padding: 5rem 0;
    background: #fff;
}

.trust-indicators h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

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

.trust-item {
    text-align: center;
    padding: 2rem;
}

.trust-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.trust-item p {
    color: #64748b;
    line-height: 1.6;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* Courses Catalog */
.courses-catalog {
    padding: 3rem 0;
}

.catalog-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

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

.filter-group label {
    font-weight: 500;
    color: #374151;
    font-size: 0.875rem;
}

.filter-group input,
.filter-group select {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.875rem;
    background: #fff;
}

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

.results-header {
    margin-bottom: 2rem;
    color: #64748b;
    font-weight: 500;
}

/* Course Detail */
.course-detail {
    padding: 3rem 0;
}

.course-header {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 3rem;
    margin-bottom: 3rem;
}

.course-info h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.course-instructor {
    color: #64748b;
    margin-bottom: 1rem;
}

.course-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #64748b;
    font-size: 0.875rem;
}

.course-sidebar {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    height: fit-content;
    position: sticky;
    top: 100px;
}

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

.current-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: #059669;
    margin-bottom: 1rem;
}

.price-note {
    color: #64748b;
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.enroll-btn {
    width: 100%;
    margin-bottom: 1rem;
}

.course-includes {
    border-top: 1px solid #e2e8f0;
    padding-top: 2rem;
}

.course-includes h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

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

.course-includes li {
    padding: 0.5rem 0;
    color: #64748b;
    position: relative;
    padding-left: 1.5rem;
}

.course-includes li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #059669;
    font-weight: bold;
}

.course-tabs {
    margin-bottom: 3rem;
}

.tab-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid #e2e8f0;
}

.tab-button {
    padding: 1rem 1.5rem;
    font-weight: 500;
    color: #64748b;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab-button.active {
    color: #2563eb;
    border-bottom-color: #2563eb;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.learning-objectives {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    margin-bottom: 2rem;
}

.learning-objectives h3 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.learning-objectives ul {
    list-style: none;
}

.learning-objectives li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.learning-objectives li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

.curriculum-item {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.curriculum-header {
    padding: 1rem 1.5rem;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    font-weight: 600;
    color: #1e293b;
}

.curriculum-content {
    padding: 1rem 1.5rem;
    color: #64748b;
}

.instructor-bio {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.instructor-bio h3 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.faq-item {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1rem 1.5rem;
    background: #f8fafc;
    border: none;
    text-align: left;
    font-weight: 500;
    color: #1e293b;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:hover {
    background: #e2e8f0;
}

.faq-answer {
    padding: 1rem 1.5rem;
    color: #64748b;
    display: none;
}

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

.faq-icon {
    font-size: 1.25rem;
    font-weight: bold;
    color: #2563eb;
}

/* Checkout */
.checkout-section {
    padding: 3rem 0;
    background: #f8fafc;
}

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

.checkout-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 2rem;
}

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

.step {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #64748b;
}

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

.step.completed {
    color: #059669;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #e2e8f0;
    color: #64748b;
    font-weight: 600;
    font-size: 0.875rem;
}

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

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

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

.checkout-form {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.checkout-form h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

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

.error-message {
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

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

.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: 3px;
    position: relative;
    flex-shrink: 0;
    margin-top: 2px;
}

.checkbox-label input:checked + .checkmark {
    background: #2563eb;
    border-color: #2563eb;
}

.checkbox-label input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: -1px;
    left: 2px;
    color: white;
    font-size: 12px;
    font-weight: bold;
}

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

.order-summary {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.order-summary h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.course-summary-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.course-summary-image {
    width: 80px;
    height: 60px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
}

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

.course-summary-details h4 {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.course-summary-price {
    font-weight: 600;
    color: #059669;
}

.billing-info {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e2e8f0;
}

.billing-info h4 {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.billing-details {
    font-size: 0.875rem;
    color: #64748b;
    line-height: 1.6;
}

.summary-total {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e2e8f0;
}

.total-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.total-row.total {
    font-weight: 700;
    font-size: 1.125rem;
    color: #1e293b;
    border-top: 1px solid #e2e8f0;
    padding-top: 0.5rem;
    margin-top: 0.5rem;
}

.security-badges {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 8px;
}

.security-badges h3 {
    font-weight: 600;
    color: #0c4a6e;
    margin-bottom: 1rem;
}

.payment-icons {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    align-items: center;
}

.demo-notice {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: 6px;
    padding: 1rem;
    margin: 1.5rem 0;
}

.demo-notice p {
    color: #92400e;
    font-size: 0.875rem;
    margin: 0;
}

/* Success Page */
.success-section {
    padding: 5rem 0;
    text-align: center;
}

.success-content {
    max-width: 600px;
    margin: 0 auto;
}

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

.success-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #059669;
    margin-bottom: 1rem;
}

.success-message {
    font-size: 1.125rem;
    color: #64748b;
    margin-bottom: 2rem;
}

.order-details {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    margin-bottom: 2rem;
    text-align: left;
}

.next-steps {
    background: #f0f9ff;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #bae6fd;
    margin-bottom: 2rem;
    text-align: left;
}

.next-steps h3 {
    font-weight: 600;
    color: #0c4a6e;
    margin-bottom: 1rem;
}

.next-steps ul {
    list-style: disc;
    padding-left: 1.5rem;
    color: #1e40af;
}

.next-steps li {
    margin-bottom: 0.5rem;
}

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

/* About Page */
.about-content {
    padding: 3rem 0;
}

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

.about-text h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.about-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin: 2rem 0 1rem 0;
}

.about-text p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.about-text ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.about-text li {
    color: #64748b;
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
}

.about-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #059669;
    font-weight: bold;
}

.values-section {
    padding: 5rem 0;
    background: #f8fafc;
}

.values-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

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

.value-card {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.value-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.value-card p {
    color: #64748b;
    line-height: 1.6;
}

.team-section {
    padding: 5rem 0;
}

.team-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

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

.commitment-item {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
}

.commitment-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.commitment-item p {
    color: #64748b;
    line-height: 1.6;
}

.cta-section {
    padding: 5rem 0;
    background: #f8fafc;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.125rem;
    color: #64748b;
    margin-bottom: 2rem;
}

/* Contact Page */
.contact-section {
    padding: 3rem 0;
}

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

.contact-form-wrapper h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 2rem;
}

.contact-form {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.contact-info h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 2rem;
}

.contact-method {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    margin-bottom: 1.5rem;
}

.contact-method h3 {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.contact-method p {
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

.contact-method a {
    color: #2563eb;
    text-decoration: underline;
}

.success-message {
    background: #d1fae5;
    border: 1px solid #10b981;
    border-radius: 8px;
    padding: 1rem;
    color: #065f46;
    margin-top: 1rem;
}

.faq-preview {
    padding: 3rem 0;
    background: #f8fafc;
    text-align: center;
}

.faq-preview h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.faq-preview p {
    color: #64748b;
    margin-bottom: 2rem;
}

/* FAQ Page */
.faq-section {
    padding: 3rem 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: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-weight: 500;
    color: #64748b;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.faq-category {
    display: none;
}

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

.contact-cta {
    padding: 3rem 0;
    background: #f8fafc;
    text-align: center;
}

.contact-cta h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.contact-cta p {
    color: #64748b;
    margin-bottom: 2rem;
}

/* Legal Pages */
.legal-content {
    padding: 3rem 0;
}

.legal-text {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.legal-text h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin: 2rem 0 1rem 0;
}

.legal-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin: 1.5rem 0 0.75rem 0;
}

.legal-text p {
    color: #64748b;
    margin-bottom: 1rem;
}

.legal-text ul {
    list-style: disc;
    padding-left: 2rem;
    margin-bottom: 1rem;
}

.legal-text li {
    color: #64748b;
    margin-bottom: 0.5rem;
}

.legal-text a {
    color: #2563eb;
    text-decoration: underline;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #94a3b8;
    padding: 3rem 0 1rem 0;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    color: #f1f5f9;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

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

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

.footer-section a {
    color: #94a3b8;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #f1f5f9;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 1rem;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        flex-direction: column;
        padding: 1rem 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

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

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

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

    .course-header {
        grid-template-columns: 1fr;
    }

    .course-sidebar {
        position: static;
    }

    .checkout-content {
        grid-template-columns: 1fr;
    }

    .order-summary {
        position: static;
        order: -1;
    }

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

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

    .catalog-filters {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .checkout-steps {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .faq-categories {
        flex-direction: column;
        align-items: center;
    }

    .tab-buttons {
        flex-wrap: wrap;
    }

    .course-stats {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

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

    .features h2,
    .featured-courses h2 {
        font-size: 2rem;
    }

    .course-card {
        margin: 0 -5px;
    }

    .checkout-form,
    .order-summary {
        padding: 1rem;
    }

    .contact-form {
        padding: 1rem;
    }

    .legal-text {
        padding: 0 15px;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .nav-toggle {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

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

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

    .legal-text,
    .about-text {
        max-width: none;
    }

    h1, h2, h3, h4, h5, h6 {
        color: #000;
        page-break-after: avoid;
    }

    p, li {
        orphans: 3;
        widows: 3;
    }

    .course-card,
    .feature-card,
    .value-card {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }
}

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

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .course-card,
    .feature-card,
    .value-card {
        border: 2px solid #000;
    }

    .btn-primary {
        background: #000;
        color: #fff;
        border: 2px solid #000;
    }

    .btn-secondary {
        background: #fff;
        color: #000;
        border: 2px solid #000;
    }
}