/* ================================
   Variables CSS pour les thèmes
   ================================ */
:root {
  /* Couleurs thème clair */
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #6c757d;
  --text-tertiary: #adb5bd;
  
  /* Couleurs d'accent */
  --accent-primary: #667eea;
  --accent-secondary: #4facfe;
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #4facfe 100%);
  --gradient-secondary: linear-gradient(135deg, #4facfe 0%, #667eea 100%);
  
  /* Glassmorphisme */
  --glass-bg: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-shadow: rgba(0, 0, 0, 0.1);
  
  /* Espacements */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
}

/* Thème sombre */
[data-theme="dark"] {
  --bg-primary: #0f0f1e;
  --bg-secondary: #1a1a2e;
  --text-primary: #ffffff;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  
  --glass-bg: rgba(26, 26, 46, 0.4);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: rgba(0, 0, 0, 0.3);
}

/* ================================
   Reset et base
   ================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ================================
   Typography
   ================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--accent-secondary);
}

/* ================================
   Container
   ================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ================================
   Navigation
   ================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  border-radius: 0 !important;
  border-top-left-radius: 0 !important;
  border-top-right-radius: 0 !important;
}

/* Surcharger le border-radius de .glass pour la navbar */
.navbar.glass {
  border-radius: 0 !important;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand .logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.nav-brand .logo-img {
  height: 45px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

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

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-menu a {
  color: var(--text-primary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
  background: var(--glass-bg);
  color: var(--accent-primary);
}

/* Menu mobile */
@media (max-width: 968px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-secondary);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    padding: var(--spacing-md) 0;
    gap: 0;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--glass-border);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 1000;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }

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

  .nav-menu li {
    width: 100%;
    border-bottom: 1px solid var(--glass-border);
    transition: background var(--transition-fast);
  }

  .nav-menu li:first-child {
    border-top: 1px solid var(--glass-border);
  }

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

  .nav-menu li:hover {
    background: rgba(102, 126, 234, 0.05);
  }

  .nav-menu a {
    display: block;
    padding: 1.25rem var(--spacing-md);
    width: 100%;
    text-align: left;
    border-radius: 0;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
  }

  .nav-menu a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent-primary);
    transform: scaleY(0);
    transition: transform var(--transition-fast);
  }

  .nav-menu a:hover,
  .nav-menu a.active {
    background: var(--glass-bg);
    padding-left: calc(var(--spacing-md) + 8px);
    color: var(--accent-primary);
  }

  .nav-menu a.active::before,
  .nav-menu a:hover::before {
    transform: scaleY(1);
  }
}

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

.theme-toggle {
  position: relative;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.theme-toggle:hover {
  transform: scale(1.1);
}

/* Amélioration du background en mode sombre */
[data-theme="dark"] .theme-toggle {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.theme-icon {
  position: absolute;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

[data-theme="light"] .theme-icon.sun {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="light"] .theme-icon.moon {
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-icon.sun {
  opacity: 0;
  transform: rotate(-180deg);
}

[data-theme="dark"] .theme-icon.moon {
  opacity: 1;
  transform: rotate(0deg);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0.75rem;
  z-index: 1001;
  transition: all var(--transition-fast);
  width: 48px;
  height: 48px;
  justify-content: center;
  align-items: center;
}

.menu-toggle:hover {
  background: var(--glass-border);
  transform: scale(1.05);
  box-shadow: 0 4px 12px var(--glass-shadow);
}

.menu-toggle.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.menu-toggle span {
  width: 22px;
  height: 2.5px;
  background: var(--text-primary);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
  display: block;
}

.menu-toggle.active span {
  background: white;
}

/* Animation du burger en X */
.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

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

/* ================================
   Modal de navigation mobile
   ================================ */
.nav-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: var(--spacing-md);
}

.nav-modal.open {
  opacity: 1;
  visibility: visible;
}

.nav-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: backdrop-filter 0.3s ease;
}

.nav-modal.open .nav-modal-backdrop {
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

.nav-modal-content {
  position: relative;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-lg);
  padding: 0;
  z-index: 2001;
}

.nav-modal.open .nav-modal-content {
  transform: scale(1) translateY(0);
}

.nav-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--glass-border);
}

.nav-modal-header h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nav-modal-close {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  line-height: 1;
}

.nav-modal-close:hover {
  background: var(--glass-border);
  transform: rotate(90deg);
  color: var(--accent-primary);
}

.nav-modal-close span {
  display: block;
  line-height: 1;
}

.nav-modal-body {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.nav-modal-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 2px solid var(--glass-border);
  background: var(--glass-bg);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav-modal-link:hover {
  transform: translateX(5px);
  border-color: var(--accent-primary);
  background: rgba(102, 126, 234, 0.1);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.nav-modal-link.active {
  border-color: var(--accent-primary);
  background: rgba(102, 126, 234, 0.15);
  box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.nav-modal-icon {
  font-size: 2rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.nav-modal-link.active .nav-modal-icon {
  background: var(--gradient-primary);
}

.nav-modal-link h3 {
  margin: 0 0 0.25rem 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nav-modal-link p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.nav-modal-link.active h3,
.nav-modal-link.active p {
  color: var(--accent-primary);
}

/* Responsive pour le modal */
@media (max-width: 640px) {
  .nav-modal-content {
    max-width: 100%;
    margin: var(--spacing-md);
  }

  .nav-modal-header h2 {
    font-size: 1.25rem;
  }

  .nav-modal-link {
    padding: var(--spacing-sm);
  }

  .nav-modal-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }
}

/* ================================
   Main Content
   ================================ */
.main-content {
  padding-top: 80px;
  min-height: 100vh;
}

/* ================================
   Hero Section
   ================================ */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-xl) 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-content {
  padding: var(--spacing-lg);
}

.hero-title {
  margin-bottom: var(--spacing-md);
}

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

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.hero-image {
  padding: var(--spacing-lg);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-preview {
  width: 100%;
  max-width: 400px;
  position: relative;
}

.bag-placeholder svg {
  width: 100%;
  height: auto;
  color: var(--text-primary);
  filter: drop-shadow(0 20px 60px rgba(102, 126, 234, 0.3));
}

/* ================================
   Sections
   ================================ */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

/* Features */
.features {
  padding: var(--spacing-xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.feature-card {
  padding: var(--spacing-lg);
  text-align: center;
  transition: transform var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
}

/* CTA Section */
.cta {
  padding: var(--spacing-xl) 0;
}

.cta-content {
  text-align: center;
  padding: var(--spacing-xl);
}

.cta-content h2 {
  margin-bottom: var(--spacing-sm);
}

.cta-content p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

/* ================================
   Buttons
   ================================ */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  font-size: 1rem;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
  color: white;
}

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

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

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

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

.btn-large {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
  width: 100%;
}

.glass-btn {
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
}

/* ================================
   Footer
   ================================ */
.footer {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  border-top: 1px solid var(--glass-border);
  border-radius: 0 !important;
  border-bottom-left-radius: 0 !important;
  border-bottom-right-radius: 0 !important;
}

/* Surcharger le border-radius de .glass pour le footer */
.footer.glass {
  border-radius: 0 !important;
}

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

.footer-section h3,
.footer-section h4 {
  margin-bottom: var(--spacing-sm);
}

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

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

.footer-section a {
  color: var(--text-secondary);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--glass-border);
  color: var(--text-tertiary);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 968px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
  
  .hero-image {
    order: -1;
  }
  
  .menu-toggle {
    display: flex;
  }

  .nav-brand .logo-img {
    height: 40px;
  }

  .nav-brand .logo-text {
    font-size: 1.25rem;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
}

/* ================================
   Sélection de variantes produit
   ================================ */
.product-variants {
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.product-variants h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.variant-options {
  display: grid;
  gap: var(--spacing-sm);
}

.variant-card {
  position: relative;
  display: block;
  padding: var(--spacing-md);
  border: 2px solid var(--glass-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
}

.variant-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.variant-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--glass-shadow);
  border-color: var(--accent-primary);
}

.variant-card.active {
  border-color: var(--accent-primary);
  background: var(--glass-bg);
  box-shadow: 0 4px 16px rgba(102, 126, 234, 0.2);
}

.variant-content {
  position: relative;
}

.variant-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.variant-header h4 {
  font-size: 1.1rem;
  margin: 0;
  color: var(--text-primary);
}

.variant-badge {
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--glass-border);
  color: var(--text-secondary);
}

.variant-badge.premium {
  background: var(--gradient-primary);
  color: white;
}

.variant-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.variant-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin: 0;
}

/* Responsive pour variantes */
@media (max-width: 640px) {
  .product-variants {
    padding: var(--spacing-sm);
  }

  .variant-card {
    padding: var(--spacing-sm);
  }

  .variant-price {
    font-size: 1.25rem;
  }

  .nav-brand .logo-img {
    height: 35px;
  }

  .nav-brand .logo-text {
    font-size: 1.1rem;
  }
}