/* ============================================
   BYA — Institut de beauté
   GALERIE — filtres, grille et visionneuse
   ============================================ */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.filter-btn {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  transition: 0.3s;
}

.filter-btn.is-on,
.filter-btn:hover {
  background: var(--espresso);
  color: var(--ivory);
  border-color: var(--espresso);
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.gallery-grid a {
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/5;
}

.gallery-grid a:nth-child(3n) {
  aspect-ratio: 1/1;
}

.gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: 0.8s var(--ease);
}

.gallery-grid a:hover img {
  transform: scale(1.07);
}

.gallery-grid a figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 26px 14px 12px;
  background: linear-gradient(180deg, transparent, rgba(36, 23, 16, 0.75));
  color: var(--ivory);
  font-family: var(--font-serif);
  font-size: 1rem;
  opacity: 0;
  transform: translateY(6px);
  transition: 0.4s var(--ease);
}

.gallery-grid a:hover figcaption {
  opacity: 1;
  transform: none;
}

.gallery-grid a[data-cat].is-hidden {
  display: none;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 140;
  background: rgba(36, 23, 16, 0.92);
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transition: 0.4s;
  padding: 24px;
}

.lightbox.is-on {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-height: 82vh;
  max-width: min(1000px, 92vw);
  box-shadow: var(--shadow);
}

.lightbox button {
  position: absolute;
  color: var(--ivory);
  font-size: 1.6rem;
  width: 48px;
  height: 48px;
}

.lightbox .lb-close { top: 18px; right: 18px; }
.lightbox .lb-prev { left: 12px; top: 50%; }
.lightbox .lb-next { right: 12px; top: 50%; }

@media (min-width: 720px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 719px) {
  .gallery-grid {
    gap: 10px;
  }

  .lightbox img {
    max-height: 70vh;
    max-width: 94vw;
  }

  .lightbox .lb-prev,
  .lightbox .lb-next {
    top: auto;
    bottom: 18px;
  }

  .lightbox .lb-prev { left: 18px; }
  .lightbox .lb-next { right: 18px; }
}