/* ===================================
   VARIABLES CSS - LIGHT & DARK MODE
   =================================== */

:root[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-card: #ffffff;
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --border-color: #e2e8f0;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-hover: rgba(0, 0, 0, 0.15);

  /* Couleurs principales (inchangées) */
  --primary: #667eea;
  --secondary: #764ba2;
  --accent: #ff6b35;
  --dark: #1a202c;
  --light: #f7fafc;
}

:root[data-theme="dark"] {
  /* WCAG AA Compliant - Contraste >= 4.5:1 */
  --bg-primary: #1a1d23;
  --bg-secondary: #22272e;
  --bg-card: #2d333b;
  --text-primary: #e6edf3;
  --text-secondary: #adbac7;
  --border-color: #444c56;
  --shadow: rgba(0, 0, 0, 0.4);
  --shadow-hover: rgba(0, 0, 0, 0.5);

  /* Couleurs ajustées pour le dark mode */
  --primary: #7c92ff;
  --secondary: #b794f6;
  --accent: #ff8a5b;
  --dark: #0d1117;
  --light: #444c56;
}

/* ===================================
   STYLES GLOBAUX ADAPTATIFS
   =================================== */

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
}

header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
}

.service-card,
.contact-form {
  background: var(--bg-card);
  box-shadow: 0 5px 15px var(--shadow);
  border: 1px solid var(--border-color);
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.service-card:hover {
  box-shadow: 0 8px 25px var(--shadow-hover);
}

.tech-badge {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group label .required {
  color: var(--accent);
  font-weight: bold;
  margin-left: 2px;
}

/* ===================================
   MENU NAVIGATION ACTIF
   =================================== */

nav a.active {
  color: var(--primary);
  background: rgba(102, 126, 234, 0.15);
  font-weight: 600;
}

nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
}

/* Masquer la flèche sur mobile pour éviter les problèmes d'affichage */
@media (max-width: 768px) {
  nav a.active::after {
    display: none;
  }
}

/* ===================================
   BOUTONS HEADER (Intégrés dans la nav)
   =================================== */

/* ===================================
   BANNIÈRE COOKIES RGPD
   =================================== */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-top: 3px solid var(--primary);
  padding: 1.5rem;
  box-shadow: 0 -5px 20px var(--shadow);
  z-index: 9999;
  animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.cookie-banner.fade-out {
  animation: slideDown 0.3s ease-in forwards;
}

@keyframes slideDown {
  to {
    transform: translateY(100%);
    opacity: 0;
  }
}

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.cookie-text {
  flex: 1;
  min-width: 250px;
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.cookie-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.cookie-btn {
  padding: 0.75rem 2rem;
  border-radius: 25px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  white-space: nowrap;
}

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

.cookie-accept:hover {
  background: var(--secondary);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.cookie-reject {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.cookie-reject:hover {
  background: var(--bg-secondary);
  border-color: var(--text-secondary);
}

/* ===================================
   RESPONSIVE - MOBILE FIRST
   =================================== */

/* iPhone Classique (375px - 414px) */
@media (max-width: 414px) {
  nav {
    padding: 0.75rem 1rem;
  }

  nav a {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
  }

  .header-controls {
    flex-direction: column;
    gap: 0.5rem;
  }

  .header-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
  }

  .cookie-content {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .cookie-buttons {
    flex-direction: column;
  }

  .cookie-btn {
    width: 100%;
    padding: 0.6rem 1.5rem;
  }

  nav a.active::after {
    display: none;
  }

  .hero {
    padding: 4rem 1.5rem 3rem;
  }

  .stats {
    gap: 2rem;
  }

  .services {
    padding: 0 1rem;
  }
}

/* iPhone 16 Pro Max (430px) */
@media (min-width: 415px) and (max-width: 430px) {
  .header-btn {
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
  }
}

/* Tablet / iPad (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  .services {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    padding: 5rem 2rem 3.5rem;
  }

  .stats {
    gap: 2.5rem;
  }
}

/* PC 22 pouces (1920px) */
@media (min-width: 1920px) {
  .hero {
    padding: 8rem 3rem 5rem;
  }

  .section {
    max-width: 1400px;
    padding: 5rem 3rem;
  }

  .services {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }

  h1 {
    font-size: 4rem;
  }

  h2 {
    font-size: 3rem;
  }

  .stats {
    gap: 4rem;
  }

  .stat-num {
    font-size: 3.5rem;
  }
}

/* PC Moniteur 34 pouces Ultra-Wide (3440px) */
@media (min-width: 3440px) {
  .hero {
    padding: 10rem 4rem 6rem;
  }

  .section {
    max-width: 2000px;
    padding: 6rem 4rem;
  }

  .services {
    grid-template-columns: repeat(5, 1fr);
    gap: 3rem;
  }

  h1 {
    font-size: 5rem;
  }

  h2 {
    font-size: 3.5rem;
  }

  .stats {
    gap: 5rem;
  }

  .stat-num {
    font-size: 4.5rem;
  }

  .header-btn {
    font-size: 1rem;
    padding: 0.6rem 1.2rem;
  }

  .tab-menu {
    padding: 1rem 1.5rem;
  }

  .tab-item {
    padding: 0.7rem 1.5rem;
    font-size: 1.1rem;
  }
}

/* ===================================
   ACCESSIBILITÉ WCAG
   =================================== */

/* Focus visible pour navigation au clavier */
*:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

/* Mode haut contraste */
@media (prefers-contrast: high) {
  :root[data-theme="light"] {
    --text-primary: #000000;
    --bg-primary: #ffffff;
  }

  :root[data-theme="dark"] {
    --text-primary: #ffffff;
    --bg-primary: #000000;
  }
}

/* Réduction des animations pour accessibilité */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}