/* =============================================
   LIGHTBOX — composant partagé (galerie + timeline)
   ============================================= */

.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 200;
  cursor: pointer;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 201;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-lg);
  pointer-events: none;
}

.lightbox[hidden],
.lightbox-overlay[hidden] {
  display: none;
}

.lightbox-contenu {
  pointer-events: auto;
  max-width: min(90vw, 1000px);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-sm);
}

.lightbox-contenu img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
}

.lightbox-contenu figcaption {
  color: rgba(255,255,255,0.8);
  font-size: var(--fs-sm);
  text-align: center;
}

.lightbox-contenu figcaption[hidden] {
  display: none;
}

/* Bouton fermer */
.lightbox-fermer {
  position: fixed;
  top: var(--sp-lg);
  right: var(--sp-lg);
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.3);
  color: var(--color-blanc);
  font-size: var(--fs-lg);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  transition: background-color var(--transition);
  z-index: 202;
}

.lightbox-fermer:hover {
  background: rgba(255,255,255,0.25);
}

/* Boutons précédent / suivant */
.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.3);
  color: var(--color-blanc);
  font-size: 2rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  transition: background-color var(--transition), opacity var(--transition);
  z-index: 202;
  line-height: 1;
}

.lightbox-nav:hover {
  background: rgba(255,255,255,0.25);
}

.lightbox-nav:disabled {
  opacity: 0.3;
  cursor: default;
}

.lightbox-prev { left: var(--sp-lg); }
.lightbox-next { right: var(--sp-lg); }

@media (max-width: 500px) {
  .lightbox-prev { left: var(--sp-sm); }
  .lightbox-next { right: var(--sp-sm); }
  .lightbox-nav  { width: 40px; height: 40px; font-size: 1.5rem; }
}