/* WM Arte — Explore the Collection
   Google Arts & Culture–inspired browsing: irregular wall, drag/inertia pan,
   colour/theme/place filters, immersive detail view. Uses tokens from site.css. */

.explore-body { background: var(--cream); }

.explore-main { max-width: 1400px; margin: 0 auto; }

.explore-intro {
  padding: clamp(3rem, 7vw, 5rem) clamp(1.25rem, 5vw, 3.5rem) clamp(1.5rem, 3vw, 2rem);
  max-width: 800px;
}
.explore-intro h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
.explore-intro .lede { font-size: 1.1rem; max-width: 60ch; }

/* filter bar */
.filter-bar {
  position: sticky;
  top: 65px;
  z-index: 40;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.75rem;
  padding: 1rem clamp(1.25rem, 5vw, 3.5rem);
  background: rgba(250, 246, 238, 0.92);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.filter-group { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.filter-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-right: 0.15rem;
}
.filter-pill {
  font-family: var(--sans);
  font-size: 0.82rem;
  padding: 0.35em 0.85em;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.filter-pill:hover { border-color: var(--coral); color: var(--coral); }
.filter-pill.active { background: var(--navy); border-color: var(--navy); color: #fff; }
.filter-pill .swatch {
  display: inline-block;
  width: 9px; height: 9px;
  border-radius: 50%;
  margin-right: 0.4em;
  vertical-align: middle;
  border: 1px solid rgba(0,0,0,0.15);
}
.surprise-btn { margin-left: auto; font-size: 0.85rem; padding: 0.55em 1.3em; }

.wall-count {
  padding: 0.9rem clamp(1.25rem, 5vw, 3.5rem) 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* the wall */
.wall-viewport {
  position: relative;
  width: 100%;
  height: min(78vh, 780px);
  min-height: 420px;
  margin-top: 0.75rem;
  overflow: hidden;
  cursor: grab;
  background: var(--paper);
  touch-action: none;
  user-select: none;
}
.wall-viewport.grabbing { cursor: grabbing; }
.wall-canvas {
  position: absolute;
  top: 0;
  left: 0;
  will-change: transform;
}
.wall-hint {
  position: absolute;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--script);
  font-size: 1.1rem;
  color: var(--ink-soft);
  background: rgba(250, 246, 238, 0.85);
  padding: 0.3em 1em;
  border-radius: 999px;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 5;
}
.wall-hint.hidden { opacity: 0; }

.wall-tile {
  position: absolute;
  top: 0; left: 0;
  border-radius: 3px;
  overflow: hidden;
  box-shadow: 0 14px 28px -16px rgba(28, 42, 82, 0.35);
  cursor: pointer;
  transition: transform 0.45s cubic-bezier(.2,.8,.2,1), opacity 0.35s ease, box-shadow 0.25s ease;
  opacity: 0;
}
.wall-tile.placed { opacity: 1; }
.wall-tile:hover { box-shadow: 0 22px 40px -18px rgba(28, 42, 82, 0.48); z-index: 3; }
.wall-tile img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 12%;
  display: block;
  pointer-events: none;
}
.wall-tile-label {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 0.6rem 0.7rem 0.5rem;
  background: linear-gradient(0deg, rgba(20,17,12,0.82) 0%, rgba(20,17,12,0) 100%);
  color: #fff;
  font-size: 0.72rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.wall-tile:hover .wall-tile-label { opacity: 1; }
.wall-tile-label strong { display: block; font-family: var(--serif); font-size: 0.85rem; font-weight: 500; }

/* detail overlay */
.detail-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--cream);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s;
}
.detail-overlay.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.detail-close {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 210;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--cream);
  color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.detail-close:hover { border-color: var(--coral); color: var(--coral); }
.detail-close svg { width: 18px; height: 18px; }

.detail-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 6rem) clamp(1.25rem, 5vw, 3.5rem) clamp(2.5rem, 5vw, 3.5rem);
  align-items: start;
}
.detail-image-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: var(--paper);
  cursor: zoom-in;
}
.detail-image-wrap.zoomed { cursor: zoom-out; }
.detail-image { width: 100%; display: block; transition: transform 0.35s ease; transform-origin: var(--zx, 50%) var(--zy, 50%); }
.detail-image-wrap.zoomed .detail-image { transform: scale(2.2); }

.detail-series { font-family: var(--script); color: var(--coral); font-size: 1.2rem; margin: 0 0 0.2rem; }
.detail-meta h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); margin-bottom: 1rem; }
.detail-facts { display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1rem; margin: 0 0 1.5rem; font-size: 0.92rem; }
.detail-facts dt { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-soft); align-self: baseline; padding-top: 0.15em; }
.detail-facts dd { margin: 0; color: var(--ink); }
.detail-story { max-width: 48ch; margin-bottom: 1.5rem; }

.detail-related { border-top: 1px solid var(--line); padding: clamp(2rem, 4vw, 3rem) 0 clamp(3rem, 6vw, 4rem); max-width: 1280px; margin: 0 auto; }
.detail-related-label { padding: 0 clamp(1.25rem, 5vw, 3.5rem); font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin: 0 0 1.25rem; }
.detail-related-scroll { display: flex; gap: 1.25rem; overflow-x: auto; padding: 0 clamp(1.25rem, 5vw, 3.5rem) 0.5rem; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; }
.related-card { flex: 0 0 160px; scroll-snap-align: start; cursor: pointer; text-decoration: none; color: var(--ink); }
.related-card img { width: 100%; aspect-ratio: 3/4; object-fit: cover; object-position: 50% 12%; border-radius: 4px; box-shadow: 0 14px 26px -16px rgba(28,42,82,0.3); margin-bottom: 0.5rem; transition: transform 0.2s ease; }
.related-card:hover img { transform: translateY(-4px); }
.related-card span { display: block; font-size: 0.82rem; }
.related-card .rc-series { color: var(--ink-soft); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.03em; }

@media (max-width: 780px) {
  .detail-inner { grid-template-columns: 1fr; padding-top: 4rem; }

  .filter-bar {
    top: 0;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }
  .filter-bar::-webkit-scrollbar { display: none; }
  .filter-group { flex-wrap: nowrap; flex: 0 0 auto; gap: 0.65rem; }
  .filter-label { flex: 0 0 auto; }
  .filter-pill {
    flex: 0 0 auto;
    padding: 0.7em 1.1em;
    font-size: 0.88rem;
    min-height: 44px;
    -webkit-tap-highlight-color: transparent;
  }
  .filter-pill .swatch { width: 11px; height: 11px; }
  .surprise-btn { margin-left: 0.25rem; flex: 0 0 auto; width: auto; order: 0; min-height: 44px; }

  .wall-viewport { height: 62vh; min-height: 380px; }
}