.gallery-hero {
  padding-block: calc(var(--nav-height) + var(--space-7)) var(--space-6);
}

.gallery-hero h1 { max-width: 18ch; }

.gallery-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.gallery-filter__btn {
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.gallery-filter__btn:hover { border-color: var(--accent-primary); color: var(--accent-primary); }

.gallery-filter__btn.is-active {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
}

/* Masonry grid: row size = 8px; each item spans rows based on aspect ratio */
.masonry {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  grid-auto-rows: 8px;
  gap: var(--space-3);
}

.masonry__tile {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  cursor: pointer;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  transition: transform var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}

.masonry__tile:hover { transform: translateY(-2px); border-color: var(--accent-primary); }
.masonry__tile:focus-visible { outline-offset: 2px; }

.masonry__tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.masonry__tile-caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: var(--space-3);
  background: linear-gradient(to top, rgba(10, 25, 41, 0.85), transparent);
  color: #F4F1E8;
  font-size: 0.82rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}

.masonry__tile:hover .masonry__tile-caption,
.masonry__tile:focus-visible .masonry__tile-caption { opacity: 1; transform: translateY(0); }

.masonry__tile-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-secondary);
  margin-bottom: 2px;
}

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 25, 41, 0.94);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
}

.lightbox.is-open { display: flex; }

.lightbox__image {
  max-width: 100%;
  max-height: calc(100vh - 140px);
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.lightbox__caption {
  position: absolute;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: #F4F1E8;
  font-size: 0.95rem;
  max-width: 700px;
  padding: 0 var(--space-4);
}

.lightbox__caption .date {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-secondary);
  margin-bottom: 4px;
}

.lightbox__close,
.lightbox__nav {
  position: absolute;
  background: rgba(244, 241, 232, 0.12);
  color: #F4F1E8;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-fast) var(--ease);
}

.lightbox__close:hover, .lightbox__nav:hover { background: rgba(244, 241, 232, 0.22); }

.lightbox__close { top: var(--space-5); right: var(--space-5); }
.lightbox__nav--prev { left: var(--space-5); top: 50%; transform: translateY(-50%); }
.lightbox__nav--next { right: var(--space-5); top: 50%; transform: translateY(-50%); }

.lightbox__close svg, .lightbox__nav svg { width: 22px; height: 22px; }

.lightbox__counter {
  position: absolute;
  top: var(--space-5);
  left: var(--space-5);
  color: #F4F1E8;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

@media (max-width: 700px) {
  .lightbox__nav { width: 40px; height: 40px; }
  .lightbox__nav--prev { left: var(--space-3); }
  .lightbox__nav--next { right: var(--space-3); }
}

@media (prefers-reduced-motion: reduce) {
  .masonry__tile, .masonry__tile-caption { transition: none; }
}