/* ============================================================
   Gallery block — filter bar, justified photo grid, status.
   ============================================================ */

/* Defaults for themes that don't define these colours (a theme can set them,
   e.g. per dark / light mode). :where() keeps them weaker than any theme value. */
:where(:root) {
  --color-bg: #fafaf9; --color-surface: #fff; --color-elevated: #fff;
  --color-text: #0c0c0c; --color-text-muted: #6b6b6b; --color-text-faint: #a1a1a1;
  --color-border: rgba(0,0,0,.08); --color-hover: rgba(0,0,0,.05); --color-chip: rgba(0,0,0,.045);
  --color-btn-active: #0c0c0c; --color-btn-text-active: #fff;
  --shadow-pop: 0 12px 40px rgba(0,0,0,.12), 0 2px 8px rgba(0,0,0,.06);
  --transition: .2s ease; --radius-img: 4px; --gap: 10px;
  --row-h: clamp(160px, 20vw, 280px); --admin-bar: 0px; --container-pad: 32px; --nav-height: 60px;
}

/* Filter Bar — sticky, frosted, one row of dropdowns. */
.gallery-filters {
  position: sticky;
  top: var(--admin-bar);
  z-index: 400;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-inline: calc(var(--container-pad) * -1);
  padding: 24px var(--container-pad) 14px;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  backdrop-filter: blur(16px) saturate(1.5);
}
.gallery-filters:empty { display: none; }

.filter { position: relative; }
.filter__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px 0 15px;
  border: 0;
  border-radius: 999px;
  background: var(--color-chip);
  font-size: 0.8125rem;
  line-height: 1;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}
.filter__btn:hover { background: var(--color-hover); box-shadow: inset 0 0 0 1px var(--color-border); }
.filter__key { color: var(--color-text-muted); }
.filter__value { color: var(--color-text); font-weight: 550; }
.filter__chevron { color: var(--color-text-muted); transition: transform var(--transition); }
.filter.is-open .filter__chevron { transform: rotate(180deg); }
/* A filter with a value chosen is inverted, like an active pill. */
.filter.is-active .filter__btn { background: var(--color-btn-active); }
.filter.is-active .filter__btn:hover { box-shadow: none; opacity: 0.9; }
.filter.is-active .filter__key,
.filter.is-active .filter__chevron { color: var(--color-btn-text-active); opacity: 0.6; }
.filter.is-active .filter__value { color: var(--color-btn-text-active); }

.filter__menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 10;
  min-width: 232px;
  max-height: min(360px, 60vh);
  overflow-y: auto;
  list-style: none;
  padding: 6px;
  background: var(--color-elevated);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: var(--shadow-pop);
  animation: pp-pop 0.14s ease-out;
  transform-origin: top left;
  /* Long place lists scroll: keep the scrollbar in the menu's colours. */
  scrollbar-width: thin;
  scrollbar-color: var(--color-text-faint) transparent;
}
.filter__menu.is-flipped { left: auto; right: 0; transform-origin: top right; }
@keyframes pp-pop {
  from { opacity: 0; transform: translateY(-4px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}
.filter__option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 8px;
  border-radius: 8px;
  font-size: 0.875rem;
  cursor: pointer;
  outline: none;
}
.filter__option:hover,
.filter__option:focus { background: var(--color-hover); }
.filter__option:focus-visible { box-shadow: inset 0 0 0 1.5px var(--color-text); }
.filter__check { display: flex; width: 16px; flex-shrink: 0; opacity: 0; }
.filter__option[aria-selected="true"] .filter__check { opacity: 1; }
.filter__option[aria-selected="true"] .filter__name { font-weight: 550; }
.filter__name { flex: 1; }
.filter__count {
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-faint);
}
.filter__option[aria-disabled="true"] { opacity: 0.35; cursor: default; }
.filter__option[aria-disabled="true"]:hover { background: none; }
/* Country beside a place when no country is chosen. */
.filter__country {
  margin-left: 8px;
  font-size: 0.75rem;
  color: var(--color-text-faint);
}

.filter-clear {
  height: 36px;
  border: 0;
  background: none;
  padding: 0 8px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.filter-clear:hover { color: var(--color-text); }

/* Gallery Grid — justified rows.
   Each card's flex-grow and flex-basis scale with its aspect ratio (--r, set
   in gallery-filter.js), so every photo in a row gets the same height with no
   cropping, and photos read left-to-right, newest first. Loading more only
   appends rows; earlier photos never move. */
.gallery-section { padding-bottom: 48px; }
.gallery-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--gap);
  padding-top: 6px;
  transition: opacity 0.25s ease;
}
/* Keeps the last, partly-filled row at natural height instead of stretching it. */
.gallery-grid::after { content: ''; flex-grow: 999999; }
.gallery-grid[aria-busy="true"] { opacity: 0.45; }
/* First load: soft shimmer instead of an empty page. */
.gallery-grid[aria-busy="true"]:empty {
  opacity: 1;
  min-height: 60vh;
  border-radius: var(--radius-img);
  background: linear-gradient(100deg, var(--color-chip) 30%, var(--color-hover) 50%, var(--color-chip) 70%) 0 0 / 300% 100%;
  animation: pp-shimmer 1.4s linear infinite;
}
.gallery-grid[aria-busy="true"]:empty::after { display: none; }
@keyframes pp-shimmer { to { background-position: -150% 0; } }

/* Photo Card */
.photo-card {
  position: relative;
  flex: var(--r, 1.5) 1 calc(var(--r, 1.5) * var(--row-h));
  aspect-ratio: var(--r, 1.5);
  min-width: 0;
  padding: 0;
  border: 0;
  overflow: hidden;
  border-radius: var(--radius-img);
  background: var(--color-chip);
  cursor: zoom-in;
}
.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.photo-card img.is-loaded { opacity: 1; }
.photo-card__caption {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 40px 14px 12px;
  text-align: left;
  color: #fff;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.62), transparent);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}
.photo-card__title { font-size: 0.8125rem; font-weight: 550; line-height: 1.3; }
.photo-card__meta  { font-size: 0.75rem; opacity: 0.75; }
@media (hover: hover) {
  .photo-card:hover img { transform: scale(1.03); }
  .photo-card:hover .photo-card__caption { opacity: 1; transform: none; }
}
.photo-card:focus-visible { outline-offset: 3px; }
.photo-card:focus-visible .photo-card__caption { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .photo-card img, .photo-card__caption { transition: none; }
  .photo-card:hover img { transform: none; }
}

/* Status & Load More */
.gallery-status {
  text-align: center;
  padding: 32px 24px 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}
.gallery-status:empty { padding: 0; }
.gallery-load-more { display: flex; justify-content: center; padding-block: 32px 48px; min-height: 1px; }
.gallery-load-more.is-loading::after {
  content: '';
  width: 20px; height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-text-muted);
  border-radius: 50%;
  animation: pp-spin 0.8s linear infinite;
}
@keyframes pp-spin { to { transform: rotate(360deg); } }
.btn-load-more {
  padding: 10px 24px;
  border: 0;
  border-radius: 999px;
  background: var(--color-chip);
  font-size: 0.875rem;
  transition: background var(--transition);
}
.btn-load-more:hover { background: var(--color-hover); }

@media (max-width: 760px) {
  .gallery-filters { top: calc(var(--admin-bar) + var(--nav-height)); padding-top: 14px; }
}
@media (max-width: 600px) {
  .admin-bar .gallery-filters { top: 0; }
  .filter__btn { padding: 0 10px 0 13px; }
  /* Compact pills: "Place ▾" until chosen, then just the value. */
  .filter:not(.is-active) .filter__value,
  .filter.is-active .filter__key { display: none; }
  .filter:not(.is-active) .filter__key { color: var(--color-text); }
}

/* Photo Set block: the same rows, without filters (a set inside a post or page). */
.pp-photo-set .gallery-grid { padding-top: 0; }
/* A line break between rows (gallery-rows.js); cancels the extra row gap it would add. */
.gallery-grid > .pp-row-break { flex-basis: 100%; height: 0; margin-top: calc(var(--gap) * -1); }
.pp-photo-set .photo-card { display: block; text-decoration: none; }
.pp-photo-set__empty { padding: 24px; border: 1px dashed var(--color-border); border-radius: var(--radius-img); color: var(--color-text-muted); text-align: center; }