/* ==========================================================================
   SETTINGS - Variables and configuration
   ========================================================================== */

:root {
    --color-primary: #e53e3e;
    --color-primary-dark: #c53030;
    --color-primary-light: #fc8181;
    --color-secondary: #2d3748;
    --color-secondary-dark: #1a202c;
    --color-accent: #ed8936;
    --color-dark-bg: #0f1419;
    --color-dark-surface: #1a1f2e;
    --color-dark-text: #ffffff;
    --color-dark-text-muted: #a0aec0;

    --color-light-bg: #ffffff;
    --color-light-surface: #f7fafc;
    --color-light-text: #1a202c;
    --color-light-text-muted: #718096;
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 64px;
    --space-2xl: 96px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    --font-size-4xl: 64px;

    --line-height: 1.6;
    --letter-spacing: -0.02em;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.25);
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    --container-max: 1280px;
    --header-height: 72px;
}

/* ==========================================================================
   GENERIC - Resets and normalizations (No Reset selected)
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-light-text);
    background-color: var(--color-dark-bg);
}

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

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

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

ul,
ol {
    list-style: none;
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    font-weight: 600;
    letter-spacing: var(--letter-spacing);
}

p {
    margin: 0;
}

/* ==========================================================================
   ELEMENTS - Base element styles
   ========================================================================== */

h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

/* ==========================================================================
   OBJECTS - Layout patterns (SMACSS Layout prefix: l-)
   ========================================================================== */
.root {
    min-height: 100vh;
}

.wrapper {
    width: 100%;
}

.container {
    width: 100%;
}

.l-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 20, 25, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-wrapper {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.header-container {
    height: var(--header-height);
}

.l-main {
    min-height: calc(100vh - var(--header-height));
}

.main-wrapper {
    width: 100%;
}

.l-section {
    padding: var(--space-xl) 0;
}

.l-section.dark {
    background: var(--color-dark-bg);
    color: var(--color-dark-text);
}

.l-section.light {
    background: var(--color-light-bg);
    color: var(--color-light-text);
}

.section-wrapper {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-container {
    width: 100%;
}

.l-footer {
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer-wrapper {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ==========================================================================
   COMPONENTS - UI Components (SMACSS Modules)
   ========================================================================== */
.nav {
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-dark-text);
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-dark-text-muted);
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--color-dark-text);
}

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

.nav-auth {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-xs);
}

.nav-toggle-bar {
    width: 24px;
    height: 2px;
    background: var(--color-dark-text);
    transition: transform var(--transition-fast);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 12px 24px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--color-secondary-dark);
}

.btn-ghost {
    background: transparent;
    color: var(--color-dark-text);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-large {
    padding: 16px 32px;
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

.btn-social {
    background: var(--color-dark-surface);
    color: var(--color-dark-text);
    border: 1px solid rgba(255, 255, 255, 0.1);
    flex: 1;
}

.btn-social svg {
    width: 20px;
    height: 20px;
}

.btn-social:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hero {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xl);
    min-height: 70vh;
    padding: var(--space-xl) 0;
}

.hero-content {
    flex: 1 1 500px;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(229, 62, 62, 0.15);
    color: var(--color-primary-light);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--border-radius-full);
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-dark-text-muted);
    margin-bottom: var(--space-lg);
    max-width: 540px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.hero-trust {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.hero-trust-avatars {
    display: flex;
    align-items: center;
}

.hero-trust-avatars img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--color-dark-bg);
    margin-left: -10px;
    object-fit: cover;
}

.hero-trust-avatars img:first-child {
    margin-left: 0;
}

.hero-trust-more {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-left: -10px;
}

.hero-trust-text {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.hero-media {
    flex: 1 1 400px;
}

.hero-video-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
}

.hero-video-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.hero-video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    transition: background var(--transition-fast);
}

.hero-video-card:hover .hero-video-overlay {
    background: rgba(0, 0, 0, 0.5);
}

.hero-play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.hero-play-btn svg {
    width: 32px;
    height: 32px;
    color: white;
    margin-left: 4px;
}

.hero-video-card:hover .hero-play-btn {
    transform: scale(1.1);
}

.hero-video-text {
    margin-top: var(--space-sm);
    color: white;
    font-size: var(--font-size-sm);
}

.metrics-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
}

.metric-card {
    text-align: center;
    padding: var(--space-md);
    flex: 1 1 200px;
    max-width: 250px;
}

.metric-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--color-light-text-muted);
}

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

.section-title {
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

.page-header {
    text-align: center;
    padding: var(--space-lg) 0;
}

.page-title {
    font-size: clamp(32px, 4vw, 48px);
    margin-bottom: var(--space-sm);
}

.page-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.8;
    max-width: 700px;
    margin: 0 auto;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.video-card {
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.video-card-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.video-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.video-card:hover .video-card-thumb img {
    transform: scale(1.05);
}

.video-card-duration {
    position: absolute;
    bottom: var(--space-xs);
    right: var(--space-xs);
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: var(--font-size-xs);
    border-radius: 4px;
}

.video-card-level {
    position: absolute;
    top: var(--space-xs);
    left: var(--space-xs);
    padding: 4px 8px;
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: 4px;
}

.video-card-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.video-card:hover .video-card-play {
    opacity: 1;
}

.video-card-play svg {
    width: 48px;
    height: 48px;
    color: white;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.video-card-info {
    padding: var(--space-sm);
}

.video-card-category {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.video-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-dark-text);
}

.video-card-instructor {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.video-card--large {
    grid-column: span 2;
}

.section-cta {
    text-align: center;
    margin-top: var(--space-lg);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.category-card {
    display: block;
    padding: var(--space-lg);
    background: var(--color-light-surface);
    border-radius: var(--border-radius-md);
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border: 1px solid transparent;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.category-icon {
    font-size: 48px;
    display: block;
    margin-bottom: var(--space-sm);
}

.category-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-light-text);
}

.category-description {
    font-size: var(--font-size-sm);
    color: var(--color-light-text-muted);
    margin-bottom: var(--space-sm);
}

.category-count {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--border-radius-full);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: var(--space-lg);
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.pricing-card.is-highlighted {
    border-color: var(--color-primary);
    transform: scale(1.02);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--border-radius-full);
}

.pricing-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-dark-text);
}

.pricing-price {
    margin-bottom: var(--space-xs);
}

.pricing-currency {
    font-size: var(--font-size-lg);
    vertical-align: top;
    color: var(--color-dark-text-muted);
}

.pricing-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-dark-text);
}

.pricing-period {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.pricing-annual {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
    margin-bottom: var(--space-md);
}

.pricing-features {
    margin-bottom: var(--space-lg);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
    padding: var(--space-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.pricing-features li svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.pricing-features li.is-included svg {
    color: #48bb78;
}

.pricing-features li.is-excluded svg {
    color: var(--color-dark-text-muted);
    opacity: 0.5;
}

.pricing-features li.is-excluded {
    opacity: 0.6;
}

.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
    justify-items: center;
}

/* Center 3 cards on desktop */
@media (min-width: 1024px) {
    .instructors-grid {
        grid-template-columns: repeat(3, minmax(260px, 380px));
        justify-content: center;
    }
}

.instructor-card {
    background: var(--color-light-surface);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    text-align: center;
}

.instructor-image {
    aspect-ratio: 1;
    overflow: hidden;
}

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

.instructor-info {
    padding: var(--space-md);
}

.instructor-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-light-text);
}

.instructor-specialty {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 4px;
}

.instructor-belt {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-light-text-muted);
    margin-bottom: var(--space-xs);
}

.instructor-achievements {
    font-size: var(--font-size-sm);
    color: var(--color-light-text-muted);
}

.instructor-profile {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.instructor-profile:last-child {
    border-bottom: none;
}

.instructor-profile--reverse {
    flex-direction: row-reverse;
}

.instructor-profile-image {
    flex: 1 1 350px;
    position: relative;
}

.instructor-profile-image img {
    width: 100%;
    border-radius: var(--border-radius-lg);
    aspect-ratio: 4/5;
    object-fit: cover;
}

.instructor-profile-badge {
    position: absolute;
    bottom: var(--space-md);
    left: var(--space-md);
}

.badge-belt {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
}

.instructor-profile-content {
    flex: 1 1 400px;
}

.instructor-profile-specialty {
    display: inline-block;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.instructor-profile-name {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-md);
}

.instructor-profile-bio {
    font-size: var(--font-size-base);
    color: var(--color-light-text-muted);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.instructor-profile-achievements h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-sm);
}

.instructor-profile-achievements ul {
    margin-bottom: var(--space-lg);
}

.instructor-profile-achievements li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
    color: var(--color-light-text-muted);
}

.instructor-profile-achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.instructor-profile-stats {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.instructor-profile-stats .stat {
    text-align: center;
}

.instructor-profile-stats .stat-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.instructor-profile-stats .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-light-text-muted);
}

.instructors-grid--compact {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.instructor-card-mini {
    text-align: center;
    padding: var(--space-md);
}

.instructor-card-mini img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto var(--space-sm);
    object-fit: cover;
}

.instructor-card-mini h3 {
    font-size: var(--font-size-base);
    margin-bottom: 4px;
    color: var(--color-dark-text);
}

.instructor-card-mini span {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

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

.feature-card {
    padding: var(--space-lg);
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(229, 62, 62, 0.15);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--space-sm);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.feature-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xs);
    color: var(--color-dark-text);
}

.feature-description {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
    line-height: 1.6;
}

.guarantee-box {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--color-light-surface);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--color-primary);
}

.guarantee-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(229, 62, 62, 0.1);
    border-radius: 50%;
}

.guarantee-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.guarantee-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
    color: var(--color-light-text);
}

.guarantee-text {
    font-size: var(--font-size-base);
    color: var(--color-light-text-muted);
    margin-bottom: var(--space-sm);
}

.guarantee-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.guarantee-features li {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-light-text);
}

.payment-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.payment-method {
    width: 80px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-sm);
    padding: var(--space-xs);
}

.payment-method img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.payment-icon {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-dark-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.security-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
}

.security-badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.security-badge svg {
    width: 20px;
    height: 20px;
}

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

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.light .faq-item {
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: left;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

.faq-question svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.faq-question[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding-bottom: var(--space-md);
}

.faq-answer p {
    font-size: var(--font-size-sm);
    line-height: 1.7;
    opacity: 0.8;
}

.faq-item.is-open .faq-answer {
    display: block;
}

.cta-box {
    text-align: center;
    padding: var(--space-xl);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    border-radius: var(--border-radius-lg);
}

.cta-box--light {
    background: var(--color-light-surface);
}

.cta-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-sm);
    color: white;
}

.cta-box--light .cta-title {
    color: var(--color-light-text);
}

.cta-text {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    color: white;
}

.cta-box--light .cta-text {
    color: var(--color-light-text-muted);
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

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

.cta-box .btn-ghost {
    border-color: white;
    color: white;
}

.auth-section {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
}

.auth-layout {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.auth-content {
    flex: 1 1 400px;
    padding: var(--space-lg);
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.auth-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
    color: var(--color-dark-text);
}

.auth-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-dark-text-muted);
    font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.auth-social {
    display: flex;
    gap: var(--space-sm);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.auth-link {
    color: var(--color-primary);
    font-weight: 500;
}

.auth-banner {
    flex: 1 1 350px;
    display: flex;
    align-items: center;
}

.auth-banner-content {
    padding: var(--space-lg);
}

.auth-banner-icon {
    font-size: 48px;
    display: block;
    margin-bottom: var(--space-md);
}

.auth-banner-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
    color: var(--color-dark-text);
}

.auth-banner-text {
    font-size: var(--font-size-base);
    color: var(--color-dark-text-muted);
    margin-bottom: var(--space-lg);
}

.auth-banner-features {
    margin-bottom: var(--space-lg);
}

.auth-banner-features li {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.auth-banner-features svg {
    width: 18px;
    height: 18px;
    color: #48bb78;
}

.auth-banner-trust {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.auth-banner-avatars {
    display: flex;
}

.auth-banner-avatars img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--color-dark-bg);
    margin-left: -8px;
}

.auth-banner-avatars img:first-child {
    margin-left: 0;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-row-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-dark-text);
}

.light .form-label {
    color: var(--color-light-text);
}

.is-required {
    color: var(--color-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base);
    color: var(--color-dark-text);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.light .form-input,
.light .form-select,
.light .form-textarea {
    color: var(--color-light-text);
    background: white;
    border-color: rgba(0, 0, 0, 0.1);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-dark-text-muted);
}

.light .form-input::placeholder,
.light .form-textarea::placeholder {
    color: var(--color-light-text-muted);
}

.form-input-wrapper {
    position: relative;
}

.form-input-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    padding: 4px;
    color: var(--color-dark-text-muted);
}

.form-input-toggle svg {
    width: 20px;
    height: 20px;
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.form-checkbox input {
    display: none;
}

.form-checkbox-mark {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    flex-shrink: 0;
    position: relative;
    margin-top: 2px;
}

.form-checkbox input:checked+.form-checkbox-mark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.form-checkbox input:checked+.form-checkbox-mark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
}

.form-checkbox a {
    color: var(--color-primary);
}

.form-link {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

.password-strength {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: var(--space-xs);
}

.password-strength-bar {
    height: 100%;
    width: 0;
    background: var(--color-primary);
    border-radius: 2px;
    transition: width var(--transition-fast);
}

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
}

.alert svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.alert.is-success {
    background: rgba(72, 187, 120, 0.1);
    color: #48bb78;
    border: 1px solid rgba(72, 187, 120, 0.2);
}

.alert.is-error {
    background: rgba(229, 62, 62, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(229, 62, 62, 0.2);
}

.alert ul {
    margin: 0;
    padding-left: var(--space-sm);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-xl);
}

.contact-form-wrapper {
    padding: var(--space-lg);
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-lg);
    color: var(--color-light-text);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-info-card {
    padding: var(--space-lg);
    background: var(--color-light-surface);
    border-radius: var(--border-radius-md);
}

.contact-info-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
    color: var(--color-light-text);
}

.contact-info-item {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.contact-info-item:last-child {
    margin-bottom: 0;
}

.contact-info-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(229, 62, 62, 0.1);
    border-radius: var(--border-radius-sm);
    flex-shrink: 0;
}

.contact-info-icon svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.contact-info-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-light-text-muted);
    margin-bottom: 2px;
}

.contact-info-content a,
.contact-info-content p {
    font-size: var(--font-size-sm);
    color: var(--color-light-text);
}

.contact-social {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.contact-social-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm);
    background: white;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-light-text);
    transition: background var(--transition-fast);
}

.contact-social-link:hover {
    background: var(--color-light-surface);
}

.contact-social-link svg {
    width: 20px;
    height: 20px;
}

.contact-info-card--cta {
    background: var(--color-primary);
    color: white;
}

.contact-info-card--cta h3 {
    color: white;
}

.contact-info-card--cta p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-bottom: var(--space-md);
}

.library-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.filter-btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-light-text-muted);
    background: var(--color-light-surface);
    border: 1px solid transparent;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--color-light-text);
}

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

.library-section {
    margin-bottom: var(--space-xl);
}

.library-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.library-section-title {
    font-size: var(--font-size-xl);
    color: var(--color-light-text);
}

.library-section-count {
    font-size: var(--font-size-sm);
    color: var(--color-light-text-muted);
}

.library-section-cta {
    text-align: center;
    margin-top: var(--space-md);
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.pricing-toggle-label {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.pricing-toggle-label.is-active {
    color: var(--color-dark-text);
    font-weight: 500;
}

.pricing-toggle-switch {
    width: 48px;
    height: 24px;
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-full);
    position: relative;
    padding: 0;
}

.pricing-toggle-slider {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
}

.pricing-toggle-switch.is-annual .pricing-toggle-slider {
    transform: translateX(24px);
}

.pricing-toggle-badge {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    background: rgba(72, 187, 120, 0.15);
    color: #48bb78;
    border-radius: var(--border-radius-full);
}

.comparison-table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-sm);
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.comparison-table th:first-child,
.comparison-table td:first-child {
    text-align: left;
}

.comparison-table th {
    font-weight: 600;
    color: var(--color-dark-text);
}

.comparison-table th.is-highlighted {
    background: rgba(229, 62, 62, 0.1);
}

.comparison-table td.is-highlighted {
    background: rgba(229, 62, 62, 0.05);
}

.comparison-table .icon-check {
    width: 20px;
    height: 20px;
    stroke: #48bb78;
    fill: none;
    stroke-width: 2;
}

.comparison-table .icon-x {
    width: 20px;
    height: 20px;
    stroke: var(--color-dark-text-muted);
    fill: none;
    stroke-width: 2;
    opacity: 0.5;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
    margin-bottom: var(--space-md);
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast);
}

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

.social-link svg {
    width: 18px;
    height: 18px;
}

.footer-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-dark-text);
}

.footer-menu li {
    margin-bottom: var(--space-xs);
}

.footer-menu a {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
    transition: color var(--transition-fast);
}

.footer-menu a:hover {
    color: var(--color-dark-text);
}

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.footer-contact-list svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-contact-list a {
    color: var(--color-dark-text-muted);
    transition: color var(--transition-fast);
}

.footer-contact-list a:hover {
    color: var(--color-dark-text);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal p {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.footer-legal-links {
    display: flex;
    gap: var(--space-md);
}

.footer-legal-links a,
.footer-legal-links button {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
    transition: color var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.footer-legal-links a:hover,
.footer-legal-links button:hover {
    color: var(--color-dark-text);
}

.sticky-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: var(--color-dark-surface);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-sm) var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.sticky-bar.is-visible {
    transform: translateY(0);
}

.sticky-bar-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sticky-bar-text {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text);
}

.sticky-bar-close {
    position: absolute;
    right: var(--space-md);
    font-size: 24px;
    color: var(--color-dark-text-muted);
    padding: var(--space-xs);
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10000;
    background: var(--color-dark-surface);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-md);
}

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

.cookie-banner-text h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-xs);
    color: var(--color-dark-text);
}

.cookie-banner-text p {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
}

.cookie-banner-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.cookie-modal {
    position: fixed;
    inset: 0;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.cookie-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
}

.cookie-modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    background: var(--color-dark-surface);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
}

.cookie-modal-close {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    font-size: 24px;
    color: var(--color-dark-text-muted);
    padding: var(--space-xs);
}

.cookie-modal-content h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-dark-text);
}

.cookie-modal-content>p {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text-muted);
    margin-bottom: var(--space-lg);
}

.cookie-options {
    margin-bottom: var(--space-lg);
}

.cookie-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cookie-option:last-child {
    border-bottom: none;
}

.cookie-option-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.cookie-option-label input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.cookie-option-name {
    font-size: var(--font-size-sm);
    color: var(--color-dark-text);
}

.cookie-option-badge {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-full);
    color: var(--color-dark-text-muted);
}

.cookie-modal-actions {
    text-align: right;
}

.page-transition {
    animation: pageSlideIn 0.5s ease;
}

@keyframes pageSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   UTILITIES - Helper classes
   ========================================================================== */

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

.u-mb-0 {
    margin-bottom: 0;
}

.u-hidden {
    display: none !important;
}

/* ==========================================================================
   RESPONSIVE - Media queries
   ========================================================================== */

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
    }

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

    .contact-info {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .comparison-table {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 768px) {
    :root {
        --space-xl: 48px;
        --space-2xl: 64px;
    }

    .nav-menu,
    .nav-auth {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu.is-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-dark-bg);
        padding: var(--space-md);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-auth.is-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: calc(var(--header-height) + 200px);
        left: 0;
        right: 0;
        background: var(--color-dark-bg);
        padding: var(--space-md);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .hero {
        min-height: auto;
        padding: var(--space-lg) 0;
    }

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

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-trust {
        justify-content: center;
    }

    .video-card--large {
        grid-column: span 1;
    }

    .form-row-2 {
        grid-template-columns: 1fr;
    }

    .guarantee-box {
        flex-direction: column;
        text-align: center;
    }

    .guarantee-features {
        justify-content: center;
    }

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

    .footer-brand {
        grid-column: span 1;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-legal-links {
        justify-content: center;
    }

    .instructor-profile,
    .instructor-profile--reverse {
        flex-direction: column;
    }

    .instructor-profile-stats {
        justify-content: center;
    }

    .pricing-grid--large {
        grid-template-columns: 1fr;
    }

    .pricing-card.is-highlighted {
        transform: none;
    }

    .auth-layout {
        flex-direction: column;
    }

    .auth-banner {
        display: none;
    }

    .sticky-bar-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-banner-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .btn-large {
        width: 100%;
    }

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

    .pricing-toggle {
        flex-wrap: wrap;
        gap: var(--space-xs);
    }

    .pricing-toggle-badge {
        order: 3;
        margin-top: var(--space-xs);
    }
}