/* ============================================================
   GestiESN — États UI cohérents + Accessibilité
   À charger après app.css
   ============================================================ */

/* ── Focus visible (accessibilité clavier) ─────────────────── */
*:focus {
  outline: none;
}
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
button:focus-visible,
a:focus-visible {
  box-shadow: 0 0 0 3px var(--accent-bg);
}
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

/* Skip to content pour lecteurs d'écran */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}
.skip-link:focus {
  top: 0;
}

/* Screen reader only (texte invisible mais lu) */
.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;
}

/* ── État : Chargement ─────────────────────────────────────── */
.ui-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--text2);
}
.ui-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: ui-spin 0.8s linear infinite;
  margin-bottom: 16px;
}
.ui-loading-text {
  font-size: 13px;
  color: var(--text3);
}
@keyframes ui-spin {
  to { transform: rotate(360deg); }
}

/* ── État : Vide ───────────────────────────────────────────── */
.ui-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
}
.ui-empty-icon {
  font-size: 48px;
  opacity: 0.5;
  margin-bottom: 12px;
}
.ui-empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.ui-empty-desc {
  font-size: 13px;
  color: var(--text3);
  max-width: 420px;
  line-height: 1.5;
}

/* ── État : Erreur ─────────────────────────────────────────── */
.ui-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  background: var(--red-bg);
  border: 1px solid var(--red);
  border-radius: var(--radius);
}
.ui-error-icon {
  font-size: 40px;
  color: var(--red);
  margin-bottom: 10px;
}
.ui-error-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--red-text);
  margin-bottom: 6px;
}
.ui-error-desc {
  font-size: 13px;
  color: var(--red-text);
  max-width: 420px;
  line-height: 1.5;
  opacity: 0.85;
}

/* ── Skeleton (squelette de chargement) ────────────────────── */
.ui-skeleton {
  padding: 20px;
}
.ui-skeleton-line {
  height: 14px;
  background: linear-gradient(90deg, var(--surface2) 0%, var(--border) 50%, var(--surface2) 100%);
  background-size: 200% 100%;
  border-radius: 4px;
  margin-bottom: 12px;
  animation: ui-skeleton-shimmer 1.4s ease-in-out infinite;
}
.ui-skeleton-table {
  width: 100%;
  border-collapse: collapse;
}
.ui-skeleton-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
}
.ui-skeleton-table .ui-skeleton-line {
  margin-bottom: 0;
  height: 10px;
}
@keyframes ui-skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Respecter prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .ui-spinner,
  .ui-skeleton-line {
    animation: none !important;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Responsive mobile (< 768px) ───────────────────────────── */
@media (max-width: 768px) {
  /* Sidebar devient un drawer mobile */
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    width: 260px !important;
    z-index: 1000;
    box-shadow: 4px 0 12px rgba(0,0,0,0.15);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
  }
  .sidebar.open + .sidebar-backdrop,
  body.sidebar-open .sidebar-backdrop {
    display: block;
  }
  /* Contenu principal plein écran */
  .main-content, .app-main {
    margin-left: 0 !important;
    padding: 16px !important;
  }
  /* Bouton hamburger visible */
  .mobile-menu-btn {
    display: flex !important;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 500;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    box-shadow: var(--shadow);
    cursor: pointer;
  }
  /* Tables scrollables horizontalement */
  .table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  table {
    font-size: 12px;
  }
  /* Cards pleine largeur */
  .card {
    padding: 14px !important;
    margin-bottom: 12px !important;
  }
  /* KPIs en colonne simple */
  .kpi-grid,
  .kpis {
    grid-template-columns: 1fr !important;
  }
  /* Form rows en colonne simple */
  .form-row {
    grid-template-columns: 1fr !important;
  }
  /* Modals plein écran */
  .modal {
    width: 95vw !important;
    max-width: 95vw !important;
    max-height: 90vh !important;
    margin: 5vh auto !important;
  }
  /* Boutons plus gros (touch targets 44px min) */
  .btn {
    min-height: 44px;
    padding: 10px 16px;
  }
  .btn-sm {
    min-height: 36px;
  }
  /* Page title plus petit */
  .page-title {
    font-size: 18px !important;
  }
}
/* Masquer hamburger sur desktop */
.mobile-menu-btn {
  display: none;
}

/* ── Tablette (768-1024px) ─────────────────────────────────── */
@media (min-width: 768px) and (max-width: 1024px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .sidebar {
    width: 200px !important;
  }
}

/* ── Contraste haute (mode sombre améliorations) ──────────── */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px !important;
  }
  .card,
  .form-input,
  .form-select {
    border-width: 2px !important;
  }
}

/* ── Badges amélio accessibles (aria) ──────────────────────── */
.badge[role="status"] {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.badge[role="status"]::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ── Topbar desktop (header dans .main) ────────────────────── */
.app-topbar {
  display: flex;
  align-items: center;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 12px;
  backdrop-filter: blur(8px);
}
#topbarNotifBtn:hover,
#topbarUserBtn:hover {
  background: var(--surface2);
}
#topbarUserBtn {
  transition: all 0.15s ease;
}
.topbar-menu-item:hover {
  background: var(--surface2) !important;
}
.topbar-menu-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

/* Bouton logout dans le user-pill sidebar */
#sidebarLogoutBtn:hover {
  background: var(--red-bg);
  color: var(--red);
}

/* Topbar cachée sur mobile (on utilise mobile-topbar) */
@media (max-width: 768px) {
  .app-topbar {
    display: none;
  }
}