/* Art page (art.html only). Dark cosmic theme tokens come from styles.css. */
.art-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Hero */
.art-hero-inner { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
.art-hero h1 { margin-bottom: .6rem; }
.art-hero-meta { color: var(--muted); font-size: .85rem; letter-spacing: .02em; margin: 1rem 0 0; max-width: 30rem; }
.art-hero-actions { margin: 1.6rem 0 0; display: flex; flex-wrap: wrap; gap: .6rem; }
.art-hero-piece {
  position: relative; display: block; padding: 0; border: 0; cursor: zoom-in; background: #0b0e1b;
  border-radius: 6px; overflow: hidden; transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .08), 0 0 60px rgba(0, 212, 255, .08);
  transition: transform .8s var(--ease);
}
.art-hero-piece:hover { transform: perspective(1200px) rotateY(-2deg) rotateX(0deg); }
.art-hero-piece img { width: 100%; height: auto; }
.art-hero-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 2.2rem 1rem .8rem; background: linear-gradient(transparent, rgba(2, 3, 10, .85)); font-size: .78rem; color: var(--ink-soft); text-align: left; }
.art-hero-cap b { color: #fff; font-weight: 600; margin-right: .4rem; }
@media (max-width: 860px) { .art-hero-inner { grid-template-columns: 1fr; } .art-hero-piece { transform: none; } }

/* Filter bar */
.art-gallery { position: relative; padding: 1rem clamp(1.15rem, 4vw, 2.5rem) 2rem; }
.art-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem; margin-bottom: 1.4rem; }
.art-chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.art-chip, .art-viewtoggle {
  appearance: none; cursor: pointer; font-size: .74rem; letter-spacing: .05em; text-transform: uppercase; font-weight: 600;
  padding: .5rem .85rem; border-radius: var(--radius-pill); border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03); color: var(--ink-soft);
  transition: background .2s, color .2s, border-color .2s;
}
.art-chip small { opacity: .6; margin-left: .3rem; font-weight: 500; }
.art-chip:hover, .art-viewtoggle:hover { border-color: var(--cyan); color: #fff; }
.art-chip[aria-pressed="true"] { background: rgba(0, 212, 255, .18); border-color: var(--cyan); color: #fff; }
.art-viewtoggle { border-style: dashed; }
.art-viewtoggle[hidden] { display: none; }
.art-chip:focus-visible, .art-viewtoggle:focus-visible, .art-tile:focus-visible, .lb-btn:focus-visible, .art-hud-t:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* Corridor (desktop) */
.art-corridor { position: relative; margin: 0 calc(-1 * clamp(1.15rem, 4vw, 2.5rem)); }
.art-corridor[hidden] { display: none; }
.art-stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.art-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.art-hud { position: absolute; left: clamp(1.15rem, 4vw, 2.5rem); bottom: 6.2rem; z-index: 2; display: grid; gap: .15rem; pointer-events: none; max-width: min(44rem, 70vw); }
.art-hud-n { font-size: .68rem; letter-spacing: .16em; color: var(--cyan-hi); font-weight: 650; font-variant-numeric: tabular-nums; }
.art-hud-t { pointer-events: auto; appearance: none; background: none; border: 0; padding: 0; text-align: left; cursor: zoom-in; font-family: var(--font-display); font-size: clamp(1.3rem, 2.4vw, 1.9rem); font-weight: 700; letter-spacing: -0.02em; color: #fff; }
.art-hud-m { font-size: .85rem; color: var(--ink-soft); }
.art-progress { position: absolute; left: clamp(1.15rem, 4vw, 2.5rem); right: clamp(1.15rem, 4vw, 2.5rem); bottom: 5.2rem; height: 2px; background: rgba(255, 255, 255, .08); z-index: 2; border-radius: 2px; overflow: hidden; }
.art-progress i { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--cyan), var(--violet)); transform-origin: 0 50%; transform: scaleX(0); }
.art-hint { position: absolute; right: clamp(1.15rem, 4vw, 2.5rem); bottom: 6.2rem; z-index: 2; margin: 0; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); transition: opacity .6s; }
.art-corridor.is-moving .art-hint { opacity: 0; }
html.art-3d .art-gallery .art-grid { display: none; }

/* Masonry grid (mobile / reduced motion / no WebGL / grid view) */
.art-grid { columns: 4 240px; column-gap: 1rem; }
.art-grid--room { columns: 3 260px; }
html.art-3d .art-grid--room { display: none; }
.art-tile {
  --rx: 0deg; --ry: 0deg;
  display: block; width: 100%; break-inside: avoid; margin: 0 0 1rem; padding: 0; border: 0; cursor: zoom-in; text-align: left;
  position: relative; border-radius: 10px; overflow: hidden; background: var(--c, #0b0e1b); color: inherit;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .07), 0 14px 34px rgba(0, 0, 0, .35);
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform .35s var(--ease), box-shadow .3s;
}
.art-tile img { width: 100%; height: auto; opacity: 0; transition: opacity .6s; }
.art-tile img.is-loaded { opacity: 1; }
.art-tile:hover { box-shadow: 0 0 0 1px rgba(0, 212, 255, .5), 0 18px 44px rgba(0, 0, 0, .45); }
.art-tile-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 2rem .8rem .7rem; background: linear-gradient(transparent, rgba(2, 3, 10, .88)); font-size: .82rem; font-weight: 600; color: #fff; opacity: 0; transform: translateY(6px); transition: opacity .3s, transform .3s; }
.art-tile-cap small { display: block; font-weight: 400; color: var(--ink-soft); font-size: .72rem; }
.art-tile:hover .art-tile-cap, .art-tile:focus-visible .art-tile-cap { opacity: 1; transform: none; }
@media (hover: none) { .art-tile-cap { opacity: 1; transform: none; padding: 1.6rem .6rem .5rem; font-size: .76rem; } .art-tile-cap small { display: none; } }
.js .art-tile.rv { opacity: 0; translate: 0 24px; transition: opacity .7s var(--ease), translate .7s var(--ease), transform .35s var(--ease), box-shadow .3s; }
.js .art-tile.rv.in { opacity: 1; translate: 0 0; }
.art-tile .art-badge { position: absolute; top: .5rem; left: .5rem; font-size: .6rem; letter-spacing: .12em; text-transform: uppercase; padding: .2rem .45rem; border-radius: 4px; background: rgba(2, 3, 10, .7); color: var(--cyan-hi); }
@media (max-width: 767px) { .art-grid, .art-grid--room { columns: 2 150px; column-gap: .7rem; } .art-tile { margin-bottom: .7rem; } }

/* 3D room */
.art-room { padding-bottom: 2rem; }
.art-room-line { color: var(--ink-soft); max-width: 40rem; }
.art-room-hint { display: none; color: var(--muted); }
html.art-3d .art-room-hint { display: inline; }
.art-room-stage { position: relative; height: min(78vh, 760px); margin-top: 1rem; cursor: grab; }
.art-room-stage:active { cursor: grabbing; }
.art-room-stage[hidden] { display: none; }
.art-room-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* Ending */
.art-end { text-align: center; padding-top: 3rem; }
.art-end-line { font-size: clamp(1.4rem, 3vw, 2.1rem); margin: 0 auto .6rem; max-width: 34rem; }
.art-end-note { color: var(--muted); font-size: .78rem; margin: 0 0 1.6rem; }

/* Lightbox */
html.lb-open { overflow: hidden; }
.art-lightbox { position: fixed; inset: 0; z-index: 300; display: grid; place-items: center; padding: 4.5rem clamp(1rem, 6vw, 6rem) 2rem; }
.art-lightbox[hidden] { display: none; }
.lb-backdrop { position: absolute; inset: 0; background: rgba(3, 4, 10, .94); }
.lb-fig { position: relative; margin: 0; display: grid; grid-template-rows: minmax(0, 1fr) auto; gap: 1rem; max-height: 100%; width: 100%; height: 100%; justify-items: center; animation: lb-in .35s var(--ease); }
.lb-media { position: relative; min-height: 0; display: grid; place-items: center; width: 100%; }
.lb-media img { max-width: 100%; max-height: calc(100vh - 15rem); max-height: calc(100svh - 15rem); width: auto; height: auto; object-fit: contain; border-radius: 4px; background: var(--lb-c, #0b0e1b) center / contain no-repeat; box-shadow: 0 30px 90px rgba(0, 0, 0, .6); }
.lb-cap { text-align: center; max-width: 40rem; }
.lb-n { font-size: .66rem; letter-spacing: .16em; color: var(--cyan-hi); font-weight: 650; }
.lb-cap h3 { font-family: var(--font-display); font-size: clamp(1.2rem, 2.4vw, 1.6rem); margin: .2rem 0 .2rem; letter-spacing: -0.02em; }
.lb-meta { margin: 0; color: var(--ink-soft); font-size: .88rem; }
.lb-desc { margin: .5rem 0 0; color: var(--muted); font-size: .85rem; }
.lb-btn { position: absolute; z-index: 2; width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line-2); background: rgba(10, 12, 24, .8); color: #fff; font-size: 1.3rem; cursor: pointer; display: grid; place-items: center; transition: background .2s, border-color .2s; }
.lb-btn:hover { background: rgba(0, 212, 255, .2); border-color: var(--cyan); }
.lb-prev { left: clamp(.5rem, 2vw, 1.5rem); top: 50%; translate: 0 -50%; }
.lb-next { right: clamp(.5rem, 2vw, 1.5rem); top: 50%; translate: 0 -50%; }
.lb-close { right: clamp(.5rem, 2vw, 1.5rem); top: 1rem; }
@media (max-width: 600px) { .lb-prev, .lb-next { top: auto; bottom: 1rem; translate: none; } .art-lightbox { padding-bottom: 5rem; } }
@keyframes lb-in { from { opacity: 0; transform: scale(.97); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .art-hero-piece, .art-hero-piece:hover { transform: none; }
  .art-tile { transform: none !important; transition: none; }
  .js .art-tile.rv { opacity: 1; translate: none; }
  .lb-fig { animation: none; }
}

/* keep the filter chips reachable while walking the corridor */
html.art-3d .art-bar { position: sticky; top: calc(var(--nav-h) + .4rem); z-index: 6; margin-bottom: 0; pointer-events: none; }
html.art-3d .art-bar > * { pointer-events: auto; }
html.art-3d .art-chip, html.art-3d .art-viewtoggle { background: rgba(10, 12, 24, .82); }
html.art-3d .art-corridor { margin-top: calc(-1 * (var(--nav-h) + 3.2rem)); }
html.lb-open .float-nav, html.lb-open .cursor-ring { visibility: hidden; }