/* Full-portfolio overlay + single-photo viewer (both are <dialog> elements). */
html:has(dialog[open]) { overflow: hidden; }

.overlay {
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: var(--color-bg);
  color: var(--color-ink);
}
.overlay::backdrop { background: rgba(20, 20, 20, .6); }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  background: transparent;
  color: inherit;
  cursor: pointer;
}
.icon-btn:hover { background: var(--color-ink); color: var(--color-bg); }

/* ---- Full portfolio ---- */
.gallery-overlay__head {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}
.gallery-overlay__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-block: 20px 12px;
}
.gallery-overlay__title { font-size: clamp(32px, 4vw, 44px); }

.gallery-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-block: 8px 16px;
  scrollbar-width: none;
}
.gallery-tab {
  flex: none;
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-ink);
  font: inherit;
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  cursor: pointer;
}
.gallery-tab:hover { border-color: var(--color-ink); }
.gallery-tab[aria-pressed="true"] { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-bg); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
  padding-block: 32px 64px;
}
.gallery-grid__item {
  display: block;
  padding: 0;
  border: 0;
  background: var(--color-bg-alt);
  cursor: zoom-in;
  overflow: hidden;
}
.gallery-grid__item img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.gallery-grid__item:hover img { transform: scale(1.03); }

@media (max-width: 1000px) { .gallery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 760px)  { .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; } }

/* ---- Single-photo viewer ---- */
.lightbox { background: #0E0E0E; color: var(--color-on-dark); }
.lightbox .icon-btn:hover { background: var(--color-on-dark); color: var(--color-ink); }

.lightbox__stage {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-rows: auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  height: 100%;
  padding: 16px var(--gutter) 24px;
}
.lightbox__top {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--color-on-dark-faint);
}
.lightbox__img {
  justify-self: center;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  user-select: none;
  touch-action: pan-y;
}

@media (max-width: 760px) {
  .lightbox__stage { grid-template-columns: 1fr 1fr; grid-template-rows: auto minmax(0, 1fr) auto; }
  .lightbox__img { grid-column: 1 / -1; grid-row: 2; }
  [data-lightbox-prev] { grid-row: 3; justify-self: start; }
  [data-lightbox-next] { grid-row: 3; justify-self: end; }
}