/* =============================================
   GALERIE — filtres
   ============================================= */

.galerie-section {
  background-color: var(--color-creme);
}

.galerie-filtres {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-2xl);
}

.filtre-btn {
  padding: 0.45em 1.1em;
  border: 2px solid var(--color-bleu);
  border-radius: 99px;
  background: transparent;
  color: var(--color-bleu);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}

.filtre-btn:hover {
  background-color: var(--color-bleu-clair);
}

.filtre-btn.actif {
  background-color: var(--color-bleu);
  color: var(--color-blanc);
}

/* =============================================
   GRILLE PHOTOS
   ============================================= */

.galerie-grille {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}

@media (min-width: 640px) {
  .galerie-grille {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .galerie-grille {
    grid-template-columns: repeat(4, 1fr);
  }
}

.galerie-item {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  background-color: var(--color-gris-clair);
  box-shadow: var(--shadow-sm);
}

/* Animation d'entrée/sortie au filtrage */
.galerie-item {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.galerie-item.masque {
  display: none;
}

.galerie-item-btn {
  display: block;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  cursor: zoom-in;
}

.galerie-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease, filter 0.35s ease;
}

.galerie-item:hover img {
  transform: scale(1.05);
  filter: brightness(0.85);
}

.galerie-item figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.65));
  color: var(--color-blanc);
  font-size: var(--fs-xs);
  padding: var(--sp-lg) var(--sp-sm) var(--sp-sm);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.galerie-item:hover figcaption,
.galerie-item:focus-within figcaption {
  opacity: 1;
  transform: translateY(0);
}

.galerie-vide {
  text-align: center;
  color: var(--color-gris);
  font-size: var(--fs-md);
  padding: var(--sp-3xl) 0;
}

/* =============================================
   LIGHTBOX
   ============================================= */

.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;
}

/* 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);
  z-index: 202;
  line-height: 1;
}

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

.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; }
}