:root {
  /* Modern Color Palette - Silicon Valley inspired */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #8b5cf6;
  --success: #10b981;
  --success-light: #34d399;
  --info: #06b6d4;
  --warning: #f59e0b;
  --danger: #ef4444;
  --secondary: #64748b;
  --dark: #1e293b;
  --light: #f8fafc;
  
  /* Extended Gray Scale */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Semantic Colors */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  
  /* Layout Variables */
  --border-radius-sm: 6px;
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Spacing Scale */
  --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;
  
  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-display: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Transitions */
  --transition-fast: all 0.15s ease;
  --transition: all 0.3s ease;
  --transition-slow: all 0.5s ease;
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: var(--space-4);
}

/* Modern CSS Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html[dir="rtl"] {
  direction: rtl;
  text-align: right;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* 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: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: var(--border-radius);
  z-index: var(--z-tooltip);
  transition: var(--transition);
}

.skip-link:focus {
  top: 6px;
}

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

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity var(--transition);
}

.loading-spinner {
  text-align: center;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--gray-200);
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-4);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--space-4) 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--container-padding);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  color: var(--primary-dark);
  transform: scale(1.05);
}

.logo-icon {
  font-size: var(--text-2xl);
}

.logo-text {
  font-weight: 800;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.mobile-menu-toggle:hover {
  background: var(--gray-100);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--primary);
  background: var(--primary);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.lang-selector {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: var(--transition);
}

.lang-selector:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--gray-100);
  border: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  cursor: pointer;
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: var(--transition);
}

.theme-toggle:hover {
  background: var(--gray-200);
  transform: scale(1.05);
}

.theme-icon {
  font-size: var(--text-lg);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  padding: calc(80px + var(--space-16)) var(--container-padding) var(--space-16);
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--primary-light) 100%);
}

.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

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

.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-content h1 {
  font-family: var(--font-family-display);
  font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
  font-weight: 800;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.hero-title-main {
  display: block;
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title-sub {
  display: block;
  font-size: 0.6em;
  font-weight: 400;
  opacity: 0.9;
  margin-top: var(--space-2);
}

.hero-subtitle {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  opacity: 0.95;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

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

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--success-light);
  line-height: 1;
}

.stat-label {
  display: block;
  font-size: var(--text-sm);
  opacity: 0.8;
  margin-top: var(--space-1);
}

.cta-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.hero-trust {
  margin-top: var(--space-8);
}

.trust-text {
  font-size: var(--text-sm);
  opacity: 0.8;
  margin-bottom: var(--space-4);
}

.trust-badges {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.trust-badge {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-base);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition);
}

.btn:hover::before {
  left: 100%;
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--border-radius-lg);
}

.btn-primary {
  background: linear-gradient(135deg, var(--success) 0%, var(--success-light) 100%);
  color: white;
  box-shadow: var(--shadow);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary);
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.btn:active {
  transform: translateY(0);
}

/* Sections */
.section {
  padding: var(--space-20) var(--container-padding);
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  font-family: var(--font-family-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-tight);
}

.section-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin: 0 auto;
}

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

/* Video Section */
.video-section {
  background: var(--bg-secondary);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.video-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid var(--gray-200);
}

.video-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.video-card:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.video-thumbnail {
  position: relative;
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.play-button {
  font-size: 4rem;
  color: var(--primary);
  transition: var(--transition);
}

.video-card:hover .play-button {
  transform: scale(1.1);
  color: var(--primary-dark);
}

.video-duration {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
}

.video-content {
  padding: var(--space-6);
}

.video-content h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.video-content p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

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

.video-category {
  background: var(--primary);
  color: white;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
}

.video-views {
  font-weight: 500;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  transform: scaleX(0);
  transition: var(--transition);
}

.card:hover::before {
  transform: scaleX(1);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.card-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: var(--space-6);
  transition: var(--transition);
}

.card:hover .card-icon {
  transform: scale(1.1);
  color: var(--primary-dark);
}

.card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  line-height: var(--leading-tight);
}

.card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--leading-relaxed);
}

/* Feature Cards */
.feature-card {
  position: relative;
}

.feature-list {
  list-style: none;
  margin-bottom: var(--space-6);
}

.feature-list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--success);
  font-weight: 700;
  font-size: var(--text-sm);
}

/* Advantage Cards */
.advantage-card {
  text-align: center;
}

.advantage-badge {
  display: inline-block;
  background: var(--success);
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--border-radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-top: var(--space-4);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--primary-light) 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.cta-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--primary-light) 100%);
}

.cta-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  animation: float 15s ease-in-out infinite reverse;
}

.cta-subtitle {
  font-size: var(--text-xl);
  opacity: 0.9;
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-guarantee {
  margin-top: var(--space-8);
  font-size: var(--text-sm);
  opacity: 0.8;
}

.cta-guarantee i {
  margin-right: var(--space-2);
  color: var(--success-light);
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.pricing-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  transition: var(--transition);
}

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

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-5px);
}

.price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--dark);
  margin: 1rem 0;
}

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

.features-list {
  list-style: none;
  margin: 2rem 0;
  text-align: left;
}

.features-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--gray-200);
}

.features-list li:before {
  content: "✓";
  color: var(--success);
  font-weight: bold;
  margin-right: 0.5rem;
}

/* FAQ */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  padding: 1.5rem;
  background: var(--gray-100);
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 1.5rem;
  border-top: 1px solid var(--gray-200);
  display: none;
}

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

/* Contact Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(78, 115, 223, 0.1);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: white;
  padding: var(--space-16) 0 var(--space-8);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

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

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.footer-section {
  display: flex;
  flex-direction: column;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: white;
  margin-bottom: var(--space-4);
}

.footer-logo .logo-icon {
  font-size: var(--text-2xl);
}

.footer-description {
  color: var(--gray-400);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

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

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gray-800);
  color: var(--gray-400);
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: var(--gray-400);
  text-decoration: none;
  transition: var(--transition);
  font-size: var(--text-sm);
}

.footer-links a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gray-400);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
}

.footer-contact i {
  color: var(--primary);
  width: 16px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-800);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copyright {
  color: var(--gray-400);
  font-size: var(--text-sm);
}

.footer-certifications {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.cert-badge {
  background: var(--gray-800);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--border-radius);
  font-size: var(--text-xs);
  color: var(--gray-300);
}

/* Dark Mode */
body.dark-mode {
  background: var(--gray-600);
  color: var(--gray-200);
}

body.dark-mode .navbar,
body.dark-mode .card,
body.dark-mode .pricing-card,
body.dark-mode .faq-item,
body.dark-mode .video-card {
  background: var(--gray-500);
  color: var(--gray-200);
}

body.dark-mode .section-header h2 {
  color: var(--gray-200);
}

body.dark-mode .section-header p {
  color: var(--gray-300);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  background: var(--primary);
  color: white;
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
  border: 2px solid white;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

html[dir="rtl"] .back-to-top {
  right: auto;
  left: var(--space-8);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .footer-content {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-6);
  }
  
  .footer-brand {
    grid-column: 1 / -1;
    margin-bottom: var(--space-6);
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-4);
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    gap: var(--space-4);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .hero {
    padding: calc(80px + var(--space-12)) var(--container-padding) var(--space-12);
  }
  
  .hero-stats {
    gap: var(--space-6);
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .video-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .section {
    padding: var(--space-16) var(--container-padding);
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: var(--text-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-lg);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .btn-large {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
  }
  
  .trust-badges {
    flex-direction: column;
    align-items: center;
  }
}

/* Tableau de comparaison des prix */
.comparison-table {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  border-collapse: collapse;
  background: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.comparison-table th {
  background: var(--primary);
  color: white;
  font-weight: 600;
  text-align: center;
}

.comparison-table .feature-column {
  width: 40%;
  font-weight: 600;
  background: var(--gray-50);
}

.comparison-table .plan-column {
  width: 20%;
  text-align: center;
}

.comparison-table .plan-column.featured {
  background: var(--primary-light);
}

.comparison-table .plan-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.comparison-table .plan-name {
  font-weight: 600;
  font-size: var(--text-lg);
}

.comparison-table .plan-price {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary);
}

.comparison-table .plan-badge {
  background: var(--success);
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.comparison-table .fas.fa-check {
  color: var(--success);
}

.comparison-table .fas.fa-times {
  color: var(--error);
}

/* Responsive pour le tableau de comparaison */
@media (max-width: 768px) {
  .comparison-table {
    font-size: var(--text-sm);
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--space-2);
  }
  
  .comparison-table .feature-column {
    width: 50%;
  }
  
  .comparison-table .plan-column {
    width: 25%;
  }
}

/* Styles pour les onglets FAQ */
.category-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  padding: 0;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}

.tab-button {
  background: var(--gray-100);
  border: 2px solid transparent;
  border-radius: var(--border-radius-lg);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.tab-button:hover {
  background: var(--gray-200);
  color: var(--text-primary);
}

.tab-button.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.tab-button:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Responsive pour les onglets FAQ */
@media (max-width: 768px) {
  .category-tabs {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }
  
  .tab-button {
    text-align: center;
    padding: var(--space-4) var(--space-6);
  }
}

/* Styles pour le formulaire de contact */
.contact-form-container {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.contact-form {
  width: 100%;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-6);
}

.form-group label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: var(--text-base);
  transition: border-color 0.3s ease;
  background: white;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.checkbox-group {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-3);
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin: 0;
  margin-top: 2px;
}

.checkbox-group label {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.5;
}

.error-message {
  color: var(--error);
  font-size: var(--text-sm);
  margin-top: var(--space-1);
  display: none;
}

.form-group.error .error-message {
  display: block;
}

.form-group.error input,
.form-group.error textarea,
.form-group.error select {
  border-color: var(--error);
}

/* Responsive pour le formulaire de contact */
@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .contact-form-container {
    padding: var(--space-6);
  }
  
  .checkbox-group {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
}