/* ============================================================
   IDF Bangladesh — Gallery page
   ============================================================ */

.gallery-filters { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-bottom: var(--sp-6); }
.filter-chip {
  padding: .55em 1.1em;
  border: 1.5px solid var(--forest-14);
  border-radius: var(--r-pill);
  background: var(--white);
  font-weight: 600; font-size: .9rem; color: var(--forest);
  transition: background var(--t-fast) var(--ease-silk), color var(--t-fast) var(--ease-silk), border-color var(--t-fast) var(--ease-silk);
}
.filter-chip:hover { border-color: var(--forest); }
.filter-chip.is-active { background: var(--forest); border-color: var(--forest); color: var(--cream); }

/* CSS-columns masonry — no layout JS, degrades to a single column */
.gallery-masonry { columns: 3 280px; column-gap: var(--sp-4); }
.gallery-item {
  margin: 0 0 var(--sp-4);
  break-inside: avoid;
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--cream-d);
  box-shadow: var(--shadow-sm);
}
.gallery-item img { width: 100%; height: auto; display: block; transition: transform var(--t-slow) var(--ease-silk); }
.gallery-item:hover img { transform: scale(1.04); }
.gallery-item figcaption {
  position: absolute; inset: auto 0 0 0;
  padding: var(--sp-5) var(--sp-4) var(--sp-4);
  background: linear-gradient(180deg, transparent, rgba(19,53,40,.82));
  color: var(--cream);
  font-size: .85rem;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--t-med) var(--ease-silk), transform var(--t-med) var(--ease-silk);
}
.gallery-item:hover figcaption, .gallery-item:focus-within figcaption { opacity: 1; transform: none; }
.gallery-item__cat { display: block; font-size: .7rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--gold-rule); margin-bottom: 2px; }
.gallery-item.is-hidden { display: none; }

.gallery-note { color: var(--muted); margin-bottom: var(--sp-5); }

@media (prefers-reduced-motion: reduce) {
  .gallery-item figcaption { opacity: 1; transform: none; }
}