/**
 * NewZhiye - Brazilian Jiu-Jitsu Online Platform
 * Fingerprint: deep-nested / css-grid / overlay-menu / diagonal / fade-scale
 * CSS Methodology: OOCSS with BEM-like naming
 * Units: rem-based with px for borders
 * Spacing: 10px base rhythm
 */

/* ============================================
   CSS RESET & VARIABLES
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Colors - Modern BJJ Theme */
    --color-primary: #E63946;
    --color-primary-dark: #C1121F;
    --color-primary-light: #FF6B6B;
    
    --color-secondary: #1D3557;
    --color-secondary-dark: #0D1B2A;
    --color-secondary-light: #457B9D;
    
    --color-accent: #F4A261;
    --color-success: #2A9D8F;
    --color-warning: #E9C46A;
    --color-error: #E63946;
    
    --color-bg: #0A0A0A;
    --color-bg-elevated: #121212;
    --color-bg-card: #1A1A1A;
    --color-bg-hover: #252525;
    
    --color-text: #FFFFFF;
    --color-text-muted: #A0A0A0;
    --color-text-subtle: #666666;
    
    --color-border: #2A2A2A;
    --color-border-hover: #404040;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    --gradient-hero: linear-gradient(135deg, #1D3557 0%, #0D1B2A 50%, #000 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.8) 100%);
    --gradient-text: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Bebas Neue', 'Impact', sans-serif;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.7;
    
    /* Spacing - 10px base */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-header: 500;
    --z-overlay: 900;
    --z-modal: 1000;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: var(--space-6);
}

/* ============================================
   BASE STYLES
   ============================================ */

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.main-content {
    padding-top: 80px; /* Header height */
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-header);
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    height: 70px;
    background: rgba(10, 10, 10, 0.98);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    gap: var(--space-8);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-text {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    letter-spacing: 2px;
    color: var(--color-text);
}

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

/* Nav Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

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

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

.mobile-menu-toggle.active .hamburger {
    background: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-menu-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--color-bg-card);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-text);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-24) 0 var(--space-16);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-background::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, var(--color-bg) 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(230, 57, 70, 0.15);
    border: 1px solid rgba(230, 57, 70, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: var(--space-6);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
    line-height: var(--line-height-tight);
    letter-spacing: 2px;
    margin-bottom: var(--space-6);
}

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
    max-width: 600px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.hero-trust {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.trust-avatars {
    display: flex;
}

.trust-avatars img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--color-bg);
    margin-left: -12px;
    object-fit: cover;
}

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

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

.hero-trust strong {
    color: var(--color-text);
}

/* ============================================
   SECTION STYLES
   ============================================ */

section {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.section-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-4);
    background: rgba(230, 57, 70, 0.15);
    border: 1px solid rgba(230, 57, 70, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary-light);
    margin-bottom: var(--space-4);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    letter-spacing: 1px;
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

.section-cta {
    text-align: center;
    margin-top: var(--space-12);
}

/* ============================================
   METRICS SECTION
   ============================================ */

.metrics-section {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-12) 0;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}

.metric-card {
    text-align: center;
    padding: var(--space-6);
}

.metric-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: rgba(230, 57, 70, 0.1);
    border-radius: var(--radius-xl);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.metric-value {
    font-family: var(--font-display);
    font-size: var(--font-size-4xl);
    letter-spacing: 1px;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

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

/* ============================================
   FEATURED SECTION
   ============================================ */

.featured-section {
    background: var(--color-bg);
}

.featured-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: var(--space-6);
}

.featured-main {
    grid-row: span 2;
}

/* Video Card */
.video-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

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

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

.featured-main .video-thumbnail {
    aspect-ratio: auto;
    height: 100%;
    min-height: 300px;
}

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

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

.video-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.play-btn {
    width: 64px;
    height: 64px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.play-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.video-duration {
    position: absolute;
    bottom: var(--space-3);
    right: var(--space-3);
    padding: var(--space-1) var(--space-2);
    background: rgba(0, 0, 0, 0.8);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.video-badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.video-info {
    padding: var(--space-5);
}

.video-category {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary-light);
    margin-bottom: var(--space-2);
}

.video-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-3);
    line-height: var(--line-height-tight);
}

.featured-main .video-title {
    font-size: var(--font-size-xl);
}

.video-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.instructor-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

.separator {
    opacity: 0.5;
}

/* ============================================
   CATEGORIES SECTION
   ============================================ */

.categories-section {
    background: var(--color-bg-elevated);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.category-card {
    display: block;
    padding: var(--space-8);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
}

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

.category-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
}

.category-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-2);
}

.category-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.category-count {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(230, 57, 70, 0.15);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-primary-light);
}

/* ============================================
   PRICING SECTION
   ============================================ */

.pricing-section {
    background: var(--color-bg);
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.toggle-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.toggle-label.active {
    color: var(--color-text);
    font-weight: 600;
}

.discount-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-2);
    background: var(--color-success);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text);
    margin-left: var(--space-2);
}

.toggle-switch {
    position: relative;
    width: 50px;
    height: 26px;
}

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

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    position: absolute;
    content: '';
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--color-text);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

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

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    align-items: start;
}

.pricing-card {
    position: relative;
    padding: var(--space-8);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--color-border-hover);
}

.pricing-card.popular {
    border-color: var(--color-primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.pricing-header h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-2);
}

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

.pricing-price {
    text-align: center;
    padding: var(--space-6) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-6);
}

.pricing-price .currency {
    font-size: var(--font-size-xl);
    font-weight: 600;
    vertical-align: top;
}

.pricing-price .amount {
    font-family: var(--font-display);
    font-size: var(--font-size-5xl);
    letter-spacing: 1px;
}

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

.pricing-features {
    margin-bottom: var(--space-8);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.pricing-features li svg {
    flex-shrink: 0;
    color: var(--color-success);
    margin-top: 2px;
}

.pricing-features li strong {
    color: var(--color-text);
}

/* ============================================
   INSTRUCTORS SECTION
   ============================================ */

.instructors-section {
    background: var(--color-bg-elevated);
}

.instructors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.instructor-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

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

.instructor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.instructor-card:hover .instructor-image img {
    transform: scale(1.05);
}

.instructor-belt {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 6px;
}

.belt-black {
    background: linear-gradient(90deg, #1a1a1a 0%, #1a1a1a 80%, #E63946 80%, #E63946 100%);
}

.instructor-info {
    padding: var(--space-5);
}

.instructor-info h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-1);
}

.instructor-title {
    font-size: var(--font-size-sm);
    color: var(--color-primary-light);
    margin-bottom: var(--space-2);
}

.instructor-achievements {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.instructor-stats {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features-section {
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-8);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: rgba(230, 57, 70, 0.1);
    border-radius: var(--radius-xl);
    color: var(--color-primary);
    margin-bottom: var(--space-5);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials-section {
    background: var(--color-bg-elevated);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.testimonial-card {
    padding: var(--space-8);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.testimonial-rating {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
}

.testimonial-text {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.testimonial-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author strong {
    display: block;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-1);
}

.testimonial-author span {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq-section {
    background: var(--color-bg);
}

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

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-5) var(--space-6);
    background: var(--color-bg-card);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-bg-hover);
}

.faq-question svg {
    flex-shrink: 0;
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 var(--space-6) var(--space-5);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-muted);
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
    background: var(--gradient-hero);
    padding: var(--space-20) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at top left, rgba(230, 57, 70, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(230, 57, 70, 0.15) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    letter-spacing: 1px;
    margin-bottom: var(--space-4);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.cta-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-subtle);
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand .logo {
    margin-bottom: var(--space-4);
}

.footer-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
    max-width: 300px;
    margin-bottom: var(--space-6);
}

.social-links {
    display: flex;
    gap: var(--space-3);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

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

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-5);
}

.footer-links li {
    margin-bottom: var(--space-3);
}

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

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

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer-contact a {
    color: var(--color-text-muted);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

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

.footer-legal-links {
    display: flex;
    gap: var(--space-6);
}

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

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

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

.form-control {
    width: 100%;
    padding: var(--space-4);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.15);
}

.form-control::placeholder {
    color: var(--color-text-subtle);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Alerts */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-5);
}

.alert-success {
    background: rgba(42, 157, 143, 0.15);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background: rgba(230, 57, 70, 0.15);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .featured-main {
        grid-row: auto;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .pricing-card.popular {
        transform: none;
    }
    
    .instructors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: var(--space-4);
    }

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

    .mobile-menu-toggle {
        display: flex;
    }

    /* Mobile Menu - Header stays on top */
    body.menu-open .site-header {
        z-index: 10000;
    }

    /* Mobile Menu Overlay */
    .nav-menu.active {
        display: flex !important;
        flex-direction: column;
        align-items: stretch;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        height: calc(100vh - 80px - 70px);
        background: #0A0A0A;
        padding: 16px 20px;
        gap: 4px;
        overflow-y: auto;
        z-index: 9998;
        border-top: 1px solid #2A2A2A;
    }

    .nav-menu.active li {
        list-style: none;
        border-bottom: 1px solid #1A1A1A;
        text-align: left;
    }

    .nav-menu.active li:last-child {
        border-bottom: none;
    }

    .nav-menu.active .nav-link {
        display: block;
        padding: 14px 16px;
        font-size: 17px;
        color: #FFFFFF;
        text-decoration: none;
        text-align: left;
        transition: background 0.2s ease;
    }

    .nav-menu.active .nav-link:hover,
    .nav-menu.active .nav-link:focus {
        background: #1A1A1A;
        color: #E63946;
    }

    .nav-menu.active .nav-link.active {
        color: #E63946;
        background: rgba(230, 57, 70, 0.1);
    }

    /* Mobile Menu Buttons - Fixed at bottom */
    .nav-actions.active {
        display: flex !important;
        flex-direction: row;
        justify-content: space-between;
        position: fixed;
        top: calc(100vh - 70px) !important;
        bottom: 0;
        left: 0;
        right: 0;
        height: 70px;
        padding: 12px 20px;
        background: #121212;
        border-top: 1px solid #2A2A2A;
        z-index: 9998;
        gap: 12px;
        align-items: center;
    }

    .nav-actions.active .btn {
        flex: 1;
        text-align: center;
        padding: 12px 16px;
        font-size: 15px;
    }
    
    .hero-section {
        min-height: auto;
        padding: var(--space-20) 0 var(--space-12);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4);
    }
    
    .metric-card {
        padding: var(--space-4);
    }
    
    .metric-icon {
        width: 60px;
        height: 60px;
    }
    
    .metric-value {
        font-size: var(--font-size-2xl);
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .instructors-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    section {
        padding: var(--space-12) 0;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-trust {
        flex-direction: column;
        align-items: flex-start;
    }
}