/* ==========================================================================
   a11y.css — Accessibilité #6.7
   --------------------------------------------------------------------------
   À inclure APRÈS design-system.css.
   Renforce le focus visible, le contraste, le support forced-colors,
   les préférences utilisateur (reduced-motion), et les helpers ARIA.
   ========================================================================== */

/* ----- Focus visible renforcé --------------------------------------------- */
/* On se base sur :focus-visible (navigateurs modernes). Fallback :focus. */
:focus {
  outline: none;
}
:focus-visible {
  outline: 3px solid var(--c-focus, var(--c-primary));
  outline-offset: 2px;
  border-radius: var(--r-sm);
}
button:focus-visible,
a:focus-visible,
.btn:focus-visible,
.tab:focus-visible,
.pill:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
[role="tab"]:focus-visible,
[role="menuitem"]:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--c-focus, var(--c-primary));
  outline-offset: 2px;
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--c-primary) 25%, transparent);
}

/* Élément en cours de navigation clavier : anneau externe sur les cartes cliquables */
.card[tabindex]:focus-visible,
a.card:focus-visible {
  outline-offset: 4px;
}

/* ----- Skip link (déjà stylé dans design-system, on force le z-index) ---- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--c-primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 var(--r-md) 0;
  z-index: 10000;
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus,
.skip-link:focus-visible {
  left: 0;
  outline: 3px solid #fff;
  outline-offset: 2px;
}

/* ----- Screen-reader only ------------------------------------------------- */
.sr-only,
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
/* Rendre visible si focus (ex. "Aller au contenu") */
.sr-only-focusable:focus,
.sr-only-focusable:focus-visible {
  position: static !important;
  width: auto !important;
  height: auto !important;
  margin: 0 !important;
  overflow: visible !important;
  clip: auto !important;
  white-space: normal !important;
}

/* ----- Reduced motion ----------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .toast,
  .modal,
  .drawer {
    animation: none !important;
  }
}

/* ----- Forced colors (Windows High Contrast mode) ------------------------ */
@media (forced-colors: active) {
  .btn,
  .card,
  .input,
  .select,
  .textarea,
  .badge,
  .pill,
  .tab {
    border: 1px solid CanvasText;
    forced-color-adjust: none;
  }
  .btn:hover,
  .btn:focus-visible {
    background: Highlight;
    color: HighlightText;
  }
  .btn.primary {
    background: ButtonText;
    color: ButtonFace;
  }
  :focus-visible {
    outline: 3px solid Highlight;
  }
  .skip-link {
    background: Highlight;
    color: HighlightText;
  }
  /* Icônes SVG stroke doit suivre la couleur du texte */
  svg[stroke="currentColor"] {
    stroke: CanvasText;
  }
}

/* ----- ARIA live regions -------------------------------------------------- */
/* Région invisible mais lue à voix haute (pour messages dynamiques type toast). */
.aria-live {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
[aria-hidden="true"] {
  /* Pas d'animation ni de focus sur éléments décoratifs */
}

/* ----- États ARIA visuels -------------------------------------------------- */
[aria-invalid="true"] {
  border-color: var(--c-danger) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-danger) 20%, transparent);
}
[aria-disabled="true"],
[aria-disabled="true"]:hover {
  opacity: 0.55;
  cursor: not-allowed !important;
  pointer-events: none;
}
[aria-busy="true"] {
  cursor: progress;
  position: relative;
}
[aria-busy="true"]::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,0.35);
  pointer-events: none;
}

/* ----- Typographie : zoom jusqu'à 200% sans casse -------------------------- */
html { text-size-adjust: 100%; -webkit-text-size-adjust: 100%; }
html, body { max-width: 100%; overflow-x: hidden; }

/* ----- Lien visité + sous-lignage clair pour WCAG 1.4.1 ------------------- */
.prose a,
main a:not(.btn):not(.tab):not(.pill):not(.card):not(.nav__item) {
  text-decoration: underline;
  text-underline-offset: 2px;
  color: var(--c-primary);
}
.prose a:hover,
main a:not(.btn):hover {
  text-decoration-thickness: 2px;
}

/* ----- Tables accessibles -------------------------------------------------- */
.table caption {
  caption-side: top;
  text-align: left;
  padding: var(--s-2) 0;
  color: var(--c-text-muted);
  font-size: var(--fs-sm);
  font-weight: 600;
}
.table th[scope="col"],
.table th[scope="row"] {
  background: var(--c-bg-elev-1);
}

/* ----- Formulaires : label + required visible + erreurs -------------------- */
label .required,
.required-marker {
  color: var(--c-danger);
  margin-left: 2px;
  font-weight: 700;
}
.field-error {
  color: var(--c-danger);
  font-size: var(--fs-sm);
  margin-top: 4px;
  display: block;
}
.field-hint {
  color: var(--c-text-muted);
  font-size: var(--fs-sm);
  margin-top: 4px;
  display: block;
}

/* ----- Modal / Drawer : piégeage de focus ---------------------------------- */
.modal,
.drawer {
  /* focus-trap géré en JS, on assure au moins un focusring sur le conteneur */
}
.modal[aria-modal="true"],
.drawer[aria-modal="true"] {
  /* le JS se charge d'appliquer inert au reste */
}

/* ----- Badges : texte lisible même sur fond teinté ------------------------- */
.badge.success { color: #0a4d2a; }
.badge.warning { color: #6b3b00; }
.badge.danger  { color: #7a1221; }
.badge.info    { color: #163a6b; }
[data-theme="dark"] .badge.success { color: #9ae5bf; }
[data-theme="dark"] .badge.warning { color: #ffd38a; }
[data-theme="dark"] .badge.danger  { color: #ff9aa8; }
[data-theme="dark"] .badge.info    { color: #9fc3ff; }

/* ----- Icônes seules : target touch minimum ------------------------------- */
button.icon-only,
.btn.icon-only,
a.icon-only {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ----- Contrastes : alias sémantique pour couleurs ------------------------ */
/* Définis ici pour forcer un minimum WCAG AA même si un tenant choisit une primary claire */
:root {
  --c-focus: var(--c-primary);
}
[data-theme="dark"] {
  --c-focus: var(--c-primary);
}