/* ========================================
   NAVIGATION MOBILE - FICHIER ISOLÉ
   Ne touche AUCUN style existant
   ======================================== */

/* --- Éléments cachés par défaut (desktop) --- */
.mobile-nav-toggle {
  display: none;
}

.mobile-nav-backdrop {
  display: none;
}

/* --- Bouton Hamburger --- */
.mobile-nav-toggle {
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--bg-1, white);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  cursor: pointer;
  position: relative;
  z-index: 10001;
  flex-direction: column;
  justify-content: space-around;
}

.mobile-nav-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--txt, #0b1020);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}
.mobile-nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.mobile-nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* --- Backdrop --- */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 9998;
}

.mobile-nav-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

/* --- Panneau Mobile --- */
.mobile-nav-panel {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background: var(--bg-1, white);
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 9999;
  display: flex;
  flex-direction: column;
}

.mobile-nav-panel.active {
  transform: translateX(0);
}

/* --- En-tête du panneau --- */
.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 16px;
  border-bottom: 2px solid var(--border, #e2e8f0);
  background: linear-gradient(180deg, var(--bg-1, white), var(--bg-2, #eef2ff));
}

.mobile-nav-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--txt, #0b1020);
  letter-spacing: 0.3px;
}

.mobile-nav-close {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border, #e2e8f0);
  background: var(--bg-1, white);
  color: var(--txt, #0b1020);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: all 0.2s ease;
}

.mobile-nav-close:hover {
  background: var(--primary, #6d5ef6);
  color: white;
  border-color: var(--primary, #6d5ef6);
}

/* --- Liste des entrées --- */
.mobile-nav-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

/* Groupe accordéon */
.mobile-nav-group {
  margin: 8px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  overflow: hidden;
}

.mobile-nav-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-2, #eef2ff);
  cursor: pointer;
  color: var(--txt, #0b1020);
  font-size: 15px;
  font-weight: 600;
  border: none;
  width: 100%;
  text-align: left;
  transition: background 0.2s ease;
}

.mobile-nav-group-header:hover {
  background: var(--muted, #d8dff5);
}

.mobile-nav-group-header .icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.mobile-nav-group-header .chevron {
  font-size: 12px;
  transition: transform 0.3s ease;
}

.mobile-nav-group.open .chevron {
  transform: rotate(180deg);
}

/* Sous-menu */
.mobile-nav-submenu {
  display: none;
  background: var(--bg-1, white);
  border-top: 1px solid var(--border, #e2e8f0);
}

.mobile-nav-group.open .mobile-nav-submenu {
  display: block;
}

.mobile-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px 12px 48px;
  cursor: pointer;
  color: var(--txt, #0b1020);
  font-size: 14px;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  transition: background 0.2s ease;
}

.mobile-nav-item:hover,
.mobile-nav-item:focus {
  background: var(--bg-2, #eef2ff);
  outline: none;
}

.mobile-nav-item:focus-visible {
  outline: 2px solid var(--primary, #6d5ef6);
  outline-offset: -2px;
}

.mobile-nav-sep {
  height: 1px;
  background: var(--border, #e2e8f0);
  margin: 8px 16px;
}

/* Sous-titre dans le menu mobile */
.mobile-nav-subtitle {
  padding: 12px 16px 8px 48px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Item spécial pour le thème */
.mobile-nav-theme {
  font-weight: 500;
}

.mobile-nav-theme strong {
  color: var(--accent);
  font-weight: 700;
  margin-left: 4px;
}

/* --- Responsive (≤ 768px) --- */
@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: flex;
  }
  
  /* Masquer le menu desktop */
  .menubar {
    display: none !important;
  }
  
  /* Masquer les boutons Thème et Ajouter mobilisation sur mobile */
  .header .cta {
    display: none !important;
  }
  
  /* Fixer le header en haut de l'écran */
  .header {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 1000 !important;
    margin: 0 !important;
    padding: 12px 14px !important;
  }
  
  /* Empêcher le recouvrement du contenu par le header fixe */
  .page {
    padding-top: 72px !important; /* ~ hauteur header + marge de sécurité */
  }
  
  /* Assurer que le body peut scroller mais pas le header */
  html, body {
    overflow-x: hidden;
  }
}

/* --- Scroll lock --- */
body.mobile-menu-open {
  overflow: hidden;
}