@import './variables.css';

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    min-height: 44px;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
}

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

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

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

.btn-white:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
}

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

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

.btn-small {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    min-height: 36px;
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) 0;
}

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

.logo-icon {
    color: var(--color-primary);
}

.logo-text {
    font-weight: var(--font-weight-extrabold);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    transition: color var(--transition-fast);
}

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

.login-link {
    margin-right: var(--spacing-md);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    padding: calc(80px + var(--spacing-4xl)) 0 var(--spacing-4xl);
    background: linear-gradient(180deg, var(--color-secondary) 0%, var(--color-white) 100%);
    text-align: center;
}

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

.hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text-light);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

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

/* Section Styles */
section {
    padding: var(--spacing-4xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Why Choose Section */
.why-choose {
    background-color: var(--color-white);
}

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

.feature-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-secondary);
    border-radius: var(--radius-full);
    color: var(--color-primary);
}

.feature-title {
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.feature-description {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Teachers Section */
.teachers {
    background-color: var(--color-white);
    padding: var(--spacing-4xl) 0;
}

.teachers-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.teachers-sort {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sort-label {
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    white-space: nowrap;
}

.sort-dropdown {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: border-color var(--transition-fast);
    min-width: 180px;
}

.sort-dropdown:hover {
    border-color: var(--color-primary);
}

.sort-dropdown:focus {
    outline: none;
    border-color: var(--color-primary);
}

.teachers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-2xl);
    justify-items: center;
}

.teacher-card {
    text-align: center;
    transition: transform var(--transition-base);
    cursor: pointer;
    width: 100%;
    max-width: 180px;
}

.teacher-card:hover {
    transform: translateY(-4px);
}

.teacher-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-full);
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-base);
}

.teacher-card:hover .teacher-avatar {
    box-shadow: var(--shadow-lg);
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.teacher-name {
    font-size: 0.875rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    line-height: 1.3;
}

.teacher-specialty {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.4;
}

/* Courses Section */
.courses {
    background-color: var(--color-secondary);
}

.courses-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

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

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-light);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 48px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

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

.filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.course-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    border: 1px solid transparent;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-border);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.course-icon {
    font-size: 2rem;
}

.course-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-secondary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.course-title {
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.course-description {
    flex: 1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
    line-height: 1.6;
}

.course-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.course-separator {
    color: var(--color-text-light);
}

.course-btn {
    margin-top: auto;
}

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

/* Testimonials Section */
.testimonials {
    background-color: var(--color-white);
}

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

.testimonial-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.quote-icon {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.testimonial-quote p {
    font-style: italic;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 1rem;
}

.author-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.author-title {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Pricing Section */
.pricing {
    background-color: var(--color-secondary);
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.toggle-label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.discount-badge {
    font-size: 0.75rem;
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    margin-left: var(--spacing-xs);
}

.toggle-switch {
    position: relative;
    width: 60px;
    height: 32px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-border);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 4px;
    bottom: 4px;
    background-color: var(--color-white);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--color-primary);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(28px);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pricing-card-featured {
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.pricing-card-featured:hover {
    transform: scale(1.05) translateY(-4px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.pricing-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.pricing-subtitle {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
}

.price-currency {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.price-amount {
    font-size: 3rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
}

.price-period {
    font-size: 1rem;
    color: var(--color-text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.check-icon {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

/* Final CTA Section */
.final-cta {
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-4xl) 0;
}

.cta-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.cta-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background-color: var(--color-white);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.footer-heading {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

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

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-text-light);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-newsletter {
    max-width: 300px;
}

.newsletter-text {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.newsletter-form input {
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background-color: var(--color-secondary);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-lg);
    z-index: 1001;
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.cookie-content p {
    flex: 1;
    margin: 0;
    color: var(--color-text);
    font-size: 0.875rem;
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-md);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card-featured {
        transform: scale(1);
    }
    
    .pricing-card-featured:hover {
        transform: translateY(-4px);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: var(--spacing-md);
    }
    
    .hamburger {
        display: flex;
    }
    
    .teachers-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .teachers-sort {
        justify-content: flex-end;
    }
    
    .teachers-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--spacing-xl);
    }
    
    .teacher-avatar {
        width: 100px;
        height: 100px;
    }
    
    .avatar-placeholder {
        font-size: 1.5rem;
    }
    
    .teacher-name {
        font-size: 0.75rem;
    }
    
    .teacher-specialty {
        font-size: 0.7rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-md) 0;
    }
    
    .hero {
        padding: calc(70px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .hero-stats {
        gap: var(--spacing-xl);
    }
    
    section {
        padding: var(--spacing-3xl) 0;
    }
    
    .features-grid,
    .courses-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .pricing-toggle {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-buttons {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .stat-number {
        font-size: 2rem;
    }
    
    .price-amount {
        font-size: 2.5rem;
    }
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}