/* Gallery route and shared photograph viewer.
 *
 * The gallery page is static HTML: every photograph is a real image and link without JavaScript.
 * The viewer is a native modal <dialog> that is present, closed, in the markup of every route.
 * JavaScript only resolves the staged filenames to URLs and manages state; there is no fetch and
 * no content injection. Values come from assets/css/tokens.css. */

/* --- Gallery route ------------------------------------------------------- */

.gallery-page { padding-block: var(--section); }
.gallery-page__intro { max-width: var(--reading); margin-top: var(--space-4); color: var(--color-muted); }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 9rem), 1fr));
  gap: var(--space-3);
  margin: clamp(2rem, 4vw, 3.5rem) 0 0;
  padding: 0;
  list-style: none;
}
.gallery-grid li { margin: 0; }
.gallery-grid__link {
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--color-ink);
  text-decoration: none;
}
.gallery-grid__link img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity var(--duration-hover) var(--easing-emphasis);
}
.gallery-grid__link:is(:hover, :focus-visible) img { opacity: .82; }
.gallery-grid__link:focus-visible { outline: 3px solid var(--color-ink); outline-offset: 2px; }

@media (min-width: 48rem) {
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr)); gap: var(--space-4); }
}

/* --- Shared viewer ------------------------------------------------------- */

html.gallery-viewer-open,
html.gallery-viewer-open body { overflow: hidden; }

.gallery-viewer {
  width: 100%;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: var(--color-ink);
  color: var(--color-paper);
}
.gallery-viewer[open] { display: flex; }
.gallery-viewer::backdrop { background: rgba(16, 16, 16, .96); }

.gallery-viewer__panel {
  display: flex;
  width: 100%;
  min-width: 0;
  height: 100%;
  min-height: 0;
  flex-direction: column;
}

.gallery-viewer__bar {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--gutter);
  border-bottom: 1px solid rgba(254, 254, 254, .18);
}
.gallery-viewer__title {
  margin: 0;
  font-family: var(--font-body);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .13em;
  line-height: var(--leading-body);
  text-transform: uppercase;
}
.gallery-viewer__counter {
  margin-left: auto;
  color: rgba(254, 254, 254, .78);
  font-size: .8125rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}
.gallery-viewer__close {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  gap: .5rem;
  padding: .5rem .9rem;
  border: 1px solid rgba(254, 254, 254, .45);
  background: transparent;
  color: inherit;
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
}
.gallery-viewer__close:hover { background: var(--color-paper); color: var(--color-ink); }
.gallery-viewer__close span { font-size: 1.1rem; line-height: 1; }
.gallery-viewer__close:focus-visible,
.gallery-viewer__nav:focus-visible,
.gallery-viewer__retry:focus-visible { outline: 3px solid var(--color-yellow); outline-offset: -4px; }

.gallery-viewer__stage {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 0;
  padding: var(--space-2) clamp(1rem, 5vw, 4rem);
  touch-action: pan-y;
}
.gallery-viewer__media {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  align-items: center;
  justify-content: center;
}
.gallery-viewer__image {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 180ms var(--easing-emphasis);
}
.gallery-viewer__image.is-loaded { opacity: 1; }

.gallery-viewer__status,
.gallery-viewer__error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(24rem, calc(100% - 2rem));
  margin: 0;
  text-align: center;
}
.gallery-viewer__status { color: rgba(254, 254, 254, .78); font-size: .8125rem; letter-spacing: .04em; }
.gallery-viewer__error {
  padding: var(--space-6);
  border: 1px solid rgba(254, 254, 254, .35);
  background: var(--color-ink);
}
.gallery-viewer__error p { margin-bottom: var(--space-4); }
.gallery-viewer__retry {
  min-height: 48px;
  padding: .65rem 1rem;
  border: 1px solid rgba(254, 254, 254, .45);
  background: transparent;
  color: inherit;
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
}
.gallery-viewer__retry:hover { background: var(--color-paper); color: var(--color-ink); }

.gallery-viewer__nav {
  position: absolute;
  z-index: 2;
  top: 50%;
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  transform: translateY(-50%);
  border: 1px solid rgba(254, 254, 254, .45);
  border-radius: 50%;
  background: rgba(16, 16, 16, .6);
  color: var(--color-paper);
  cursor: pointer;
}
.gallery-viewer__nav:hover { background: var(--color-paper); color: var(--color-ink); }
.gallery-viewer__nav svg { width: 22px; height: 22px; }
.gallery-viewer__nav--prev { left: clamp(.5rem, 2vw, 1.5rem); }
.gallery-viewer__nav--next { right: clamp(.5rem, 2vw, 1.5rem); }

@media (max-width: 40rem) {
  .gallery-viewer__bar { gap: var(--space-2); padding: var(--space-3) var(--space-4); }
  .gallery-viewer__stage { padding: var(--space-2) var(--space-2) 4.75rem; }
  .gallery-viewer__nav { top: auto; bottom: var(--space-3); width: 52px; height: 52px; transform: none; }
  .gallery-viewer__nav--prev { left: var(--space-3); }
  .gallery-viewer__nav--next { right: var(--space-3); }
}

@media (prefers-reduced-motion: reduce) {
  .gallery-grid__link img,
  .gallery-viewer__image { transition: none; }
}

@media (forced-colors: active) {
  .gallery-viewer__close,
  .gallery-viewer__nav,
  .gallery-viewer__retry { border: 2px solid ButtonText; }
}