/* ============================================================
   QUIZ HEADER — Mobile-first, priorités visuelles claires
   Row 1: hamburger · titre · timer (ancre) · pause · terminer
   Row 2: mode switcher · sauvegarde · actions secondaires
   ============================================================ */

.quiz-header {
  position: relative;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  flex-shrink: 0;
  z-index: var(--z-tooltip, 130);
  padding-top: env(safe-area-inset-top, 0);
  overflow: visible;
}

.quiz-header__row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.65rem;
  min-width: 0;
}

.quiz-header__row--primary {
  padding-bottom: 0.35rem;
  position: relative;
  z-index: 2; /* passe au-dessus de row--secondary pour que le tooltip logo ne soit pas recouvert */
}

.quiz-header__row--secondary {
  padding-top: 0.35rem;
  padding-bottom: 0.5rem;
  border-top: 1px solid var(--color-border-light);
  justify-content: space-between;
}

/* --- Logo cliquable : tooltip nom examen (desktop + mobile) --- */
.quiz-header__logo-btn {
  position: relative;
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
  min-width: 0;
  font-family: inherit;
}

.quiz-header__brand-title {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Mobile portrait : cache le libellé texte, garde le logo (place au timer/pause) */
@media (max-width: 480px) {
  .quiz-header__brand-title {
    display: none;
  }
}

@media (min-width: 640px) {
  .quiz-header__brand-title {
    font-size: 1.05rem; /* ratio 1.17 vs mobile 0.9rem = hiérarchie claire */
  }
}

/* Feedback tactile universel sur le logo (desktop + mobile) : le logo
   est cliquable partout (tooltip desktop, sidebar mobile), il doit
   ressentir la pression sur tous les viewports. */
.quiz-header__logo {
  transition: transform 120ms var(--ease-out);
}

.quiz-header__logo-btn:active .quiz-header__logo {
  transform: scale(0.94);
}

/* Mobile (aligné sur le breakpoint sidebar 767px) :
   le logo remplace le hamburger (fusion).
   - Hamburger caché (sélecteur ID pour battre les !important éventuels)
   - Logo tap → toggleSidebar (JS)
   - Tooltip logo désactivé (nom examen déplacé dans le footer) */
@media (max-width: 767px) {
  #hamburgerBtn,
  .quiz-header__hamburger {
    display: none !important;
  }
  .quiz-header__logo-btn::after {
    display: none !important;
  }
}

/* ============================================================
   QUIZ FOOTER — nom de l'examen (déplacé depuis header sur mobile)
   Affiché sous "Question X sur N", centré, discret.
   ============================================================ */
.quiz-footer__meta {
  gap: 0.1rem;
  line-height: 1.15;
  min-width: 0;
}

.quiz-footer__set-name {
  display: none;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-text-secondary, #64748b);
  max-width: 55vw;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
}

.quiz-footer__set-name:empty {
  display: none !important;
}

/* Visible uniquement là où le nom disparaît du header (mobile).
   Aligné sur le breakpoint sidebar (767px). */
@media (max-width: 767px) {
  .quiz-footer__set-name {
    display: block;
  }
}

/* ============================================================
   QUIZ NAV BUTTONS — Précédent / Suivant
   Mobile : icônes chevron seules (gagne de la place pour la marque examen).
   Desktop : icône + libellé texte.
   ============================================================ */
.quiz-nav-btn__icon {
  flex-shrink: 0;
  transition: transform 150ms var(--ease-out);
}

/* Feedback pression (tactile + click) : bouton entier scale down.
   Sonner principle : buttons doivent feel responsive to press. */
#prevBtn:active:not(:disabled),
#nextBtn:active:not(:disabled) {
  transform: scale(0.97);
  transition: transform 100ms var(--ease-out);
}

/* Hover chevron glide : uniquement sur pointers fins (desktop souris).
   Sur touch, hover se déclenche au tap et le chevron glisse pendant
   que l'utilisateur navigue → faux positif. */
@media (hover: hover) and (pointer: fine) {
  .quiz-nav-btn--prev:hover:not(:disabled) .quiz-nav-btn__icon {
    transform: translateX(-2px);
  }
  .quiz-nav-btn--next:hover:not(:disabled) .quiz-nav-btn__icon {
    transform: translateX(2px);
  }
}

@media (max-width: 767px) {
  /* visually-hidden : accessible aux SR mais invisible visuellement.
     !important pour battre l'ordre de cascade Tailwind éventuel. */
  #prevBtn .quiz-nav-btn__label,
  #nextBtn .quiz-nav-btn__label {
    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;
  }
  /* Boutons compacts : carrés autour de l'icône */
  #prevBtn,
  #nextBtn {
    flex: 0 0 auto !important;
    padding: 0.75rem 1rem !important;
    min-width: 52px;
  }
  .quiz-nav-btn__icon {
    width: 22px;
    height: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .quiz-nav-btn__icon {
    transition: none;
  }
}

.quiz-header__logo-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 3px;
  border-radius: var(--radius-md);
}

/* Tooltip nom examen (tap mobile + hover desktop). */
.quiz-header__logo-btn::after {
  content: attr(data-full-title);
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: var(--z-tooltip, 130);
  background: var(--color-neutral-900, #0f172a);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-md);
  white-space: normal;
  max-width: min(80vw, 320px);
  width: max-content;
  line-height: 1.3;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 150ms var(--ease-out), transform 150ms var(--ease-out);
}

.quiz-header__logo-btn--show-tooltip::after,
.quiz-header__logo-btn:hover::after {
  opacity: 1;
  transform: translateY(0);
}

.quiz-header__logo-btn[data-full-title=""]::after,
.quiz-header__logo-btn:not([data-full-title])::after {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .quiz-header__logo-btn::after {
    transition: none;
  }
}

/* --- Icon buttons (nav, pause, fullscreen, IA) --- */
.quiz-header__icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    background-color 150ms var(--ease-out),
    color 150ms var(--ease-out),
    border-color 150ms var(--ease-out);
  box-shadow: none;
  flex-shrink: 0;
}

.quiz-header__icon-btn:hover {
  background-color: var(--color-neutral-100);
  color: var(--color-primary-600);
}

.quiz-header__icon-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.quiz-header__icon-btn:active {
  background-color: var(--color-neutral-200);
}

/* --- Timer : ancre visuelle principale --- */
.quiz-timer {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-full);
  background: color-mix(in oklch, var(--color-primary-50) 88%, white);
  border: 1px solid color-mix(in oklch, var(--color-primary-200) 60%, var(--color-border));
  color: var(--color-primary-700);
  flex-shrink: 0;
  min-height: 40px;
  margin-left: auto;
}

.quiz-timer__ring {
  width: 20px;
  height: 20px;
  color: var(--color-primary-600);
  flex-shrink: 0;
}

.quiz-timer__ring circle {
  transition: stroke-dasharray var(--duration-fast) linear;
}

.quiz-timer__text {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary-700);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* Timer en alerte (< 5min restant) — hook JS optionnel */
.quiz-timer[data-alert="true"] {
  background: color-mix(in oklch, var(--color-warning-50) 92%, white);
  border-color: color-mix(in oklch, var(--color-warning-300) 55%, var(--color-border));
  color: var(--color-warning-700);
}

.quiz-timer[data-alert="true"] .quiz-timer__text,
.quiz-timer[data-alert="true"] .quiz-timer__ring {
  color: var(--color-warning-700);
}

/* --- Bouton Terminer (destructif visible) --- */
.quiz-header__end-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.65rem;
  min-height: 40px;
  background: var(--color-surface);
  color: var(--color-error-700);
  border: 1px solid color-mix(in oklch, var(--color-error-300) 55%, var(--color-border));
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 150ms var(--ease-out), border-color 150ms var(--ease-out);
  box-shadow: none;
  flex-shrink: 0;
}

@media (min-width: 640px) {
  .quiz-header__end-btn {
    padding: 0 0.85rem;
    font-size: 0.85rem;
  }
}

/* Très petit viewport (~360px) : compresser encore */
@media (max-width: 380px) {
  .quiz-header__end-btn {
    padding: 0 0.5rem;
    font-size: 0.72rem;
    min-height: 36px;
  }
}

.quiz-header__end-btn:hover {
  background-color: var(--color-error-50);
  border-color: var(--color-error-500);
}

.quiz-header__end-btn:focus-visible {
  outline: 2px solid var(--color-error-500);
  outline-offset: 2px;
}

/* --- Mode switcher (row 2) --- */
.quiz-mode-switcher {
  display: inline-flex;
  align-items: stretch;
  padding: 3px;
  gap: 2px;
  background: var(--color-neutral-100);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.quiz-mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  background: transparent;
  border: none;
  border-radius: calc(var(--radius-lg) - 3px);
  color: var(--color-text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 32px;
  transition: background-color 150ms var(--ease-out), color 150ms var(--ease-out);
  box-shadow: none;
  white-space: nowrap;
}

.quiz-mode-btn:hover {
  color: var(--color-primary-600);
}

.quiz-mode-btn--active {
  background: var(--color-surface);
  color: var(--color-primary-700);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.quiz-mode-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.quiz-mode-btn svg {
  flex-shrink: 0;
  opacity: 0.85;
}

.quiz-mode-btn--active svg {
  opacity: 1;
}

/* --- Actions secondaires (row 2 right) --- */
.quiz-header__actions {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Save status : forme discrète, jamais coupée */
.save-status {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0 0.4rem;
  white-space: nowrap;
}

/* Cache le libellé long sur mobile, garde la puce */
@media (max-width: 480px) {
  .save-status {
    font-size: 0;
    padding: 0 0.15rem;
  }
  .save-status::before {
    content: "●";
    font-size: 0.9rem;
    color: var(--color-success-500);
  }
  .save-status--saving::before { color: var(--color-warning-500); }
  .save-status--error::before { color: var(--color-error-500); }
}

/* ============================================================
   BREAKPOINTS
   ============================================================ */

/* Tablette+ : aligner sur une seule row */
@media (min-width: 640px) {
  .quiz-header__row--primary {
    padding: 0.6rem 1rem 0.4rem;
  }

  .quiz-header__row--secondary {
    padding: 0.4rem 1rem 0.6rem;
  }

  .quiz-timer {
    padding: 0.35rem 0.7rem;
  }

  .quiz-timer__text {
    font-size: 0.95rem;
  }

  .quiz-mode-btn {
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
  }
}

/* Desktop : tout sur une seule ligne */
@media (min-width: 960px) {
  .quiz-header__row--primary {
    gap: 0.75rem;
    padding: 0.6rem 1.25rem;
  }

  .quiz-header__row--secondary {
    border-top: none;
    padding-top: 0;
    padding-bottom: 0.6rem;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
    margin-top: -0.6rem;
    justify-content: flex-start;
    gap: 1rem;
  }

  /* Sur desktop, ramener le mode switcher juste après le titre */
  .quiz-mode-switcher {
    order: -1;
  }

  .quiz-header__actions {
    margin-left: auto;
    gap: 0.5rem;
  }
}

/* ============================================================
   FLAG BUTTON — marquer une question à revoir
   ============================================================ */
.quiz-flag-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.7rem;
  min-height: 36px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    background-color 150ms var(--ease-out),
    border-color 150ms var(--ease-out),
    color 150ms var(--ease-out);
  box-shadow: none;
  flex-shrink: 0;
}

.quiz-flag-btn:hover {
  background: color-mix(in oklch, var(--color-warning-50) 40%, white);
  border-color: color-mix(in oklch, var(--color-warning-300) 55%, var(--color-border));
  color: var(--color-warning-700);
}

.quiz-flag-btn:focus-visible {
  outline: 2px solid var(--color-warning-500);
  outline-offset: 2px;
}

.quiz-flag-btn__icon {
  flex-shrink: 0;
  opacity: 0.65;
  transition: opacity 150ms var(--ease-out);
}

.quiz-flag-btn:hover .quiz-flag-btn__icon,
.quiz-flag-btn--active .quiz-flag-btn__icon {
  opacity: 1;
  fill: currentColor;
}

.quiz-flag-btn--active {
  background: color-mix(in oklch, var(--color-warning-50) 88%, white);
  border-color: color-mix(in oklch, var(--color-warning-300) 60%, var(--color-border));
  color: var(--color-warning-800);
}

.quiz-flag-btn--active:hover {
  background: color-mix(in oklch, var(--color-warning-100) 60%, white);
}

/* Mobile : cache le label texte, garde l'icône visible */
@media (max-width: 480px) {
  .quiz-flag-btn {
    padding: 0.4rem 0.5rem;
  }
  .quiz-flag-btn__text {
    display: none;
  }
}

/* Motion réduite : coupe toute animation transform/transition non
   essentielle à la compréhension. Conserve les transitions couleur
   (a11y : les changements d'état restent perceptibles). */
@media (prefers-reduced-motion: reduce) {
  .quiz-timer__ring circle,
  .quiz-flag-btn,
  .quiz-flag-btn__icon,
  .quiz-header__logo,
  .quiz-nav-btn__icon,
  #prevBtn,
  #nextBtn,
  .quiz-header__logo-btn::after {
    transition: none !important;
  }
  #prevBtn:active:not(:disabled),
  #nextBtn:active:not(:disabled),
  .quiz-header__logo-btn:active .quiz-header__logo {
    transform: none;
  }
}