/* Photo viewer (assets/js/viewer.js): dark glass, a thin brand-coloured HUD,
   a thumbnail strip along the bottom. Only opacity and transform animate. */

html.tgv-lock{overflow:hidden}

.tgv{
  --tgv-blue:#2d6bff;--tgv-green:#40b060;--tgv-line:rgba(255,255,255,.14);
  position:fixed;inset:0;z-index:9000;display:grid;
  grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto;
  color:#fff;opacity:0;visibility:hidden;contain:layout paint;
  transition:opacity .28s var(--e-out),visibility 0s linear .28s;
}
.tgv.is-open{opacity:1;visibility:visible;transition:opacity .22s var(--e-out),visibility 0s}
.tgv[hidden]{display:none}

.tgv__bg{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(60% 50% at 82% 0%,rgba(45,107,255,.22),transparent 65%),
    radial-gradient(50% 46% at 4% 100%,rgba(64,176,96,.16),transparent 66%),
    rgba(4,7,22,.985);
}
.tgv__bg::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(70% 70% at 50% 45%,#000,transparent);mask-image:radial-gradient(70% 70% at 50% 45%,#000,transparent);
}

/* top bar: counter, caption, tools */
.tgv__hud{
  position:relative;z-index:2;display:flex;align-items:center;gap:1rem;
  padding:clamp(.7rem,1.6vw,1.1rem) clamp(.8rem,2.4vw,1.6rem);
}
.tgv__count{
  display:flex;align-items:baseline;gap:.35rem;flex:none;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.08em;font-size:.92rem;
  padding:.35rem .7rem;border:1px solid var(--tgv-line);border-radius:999px;background:rgba(255,255,255,.05);
}
.tgv__count b{font-weight:600;color:#fff}
.tgv__count i{font-style:normal;color:rgba(255,255,255,.35)}
.tgv__count em{font-style:normal;color:rgba(255,255,255,.6)}
.tgv__cap{
  flex:1;min-width:0;margin:0;font-size:.92rem;line-height:1.35;color:rgba(255,255,255,.82);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.tgv__cap[hidden]{display:block;visibility:hidden}
.tgv__tools{display:flex;gap:.5rem;flex:none;margin-left:auto}
.tgv__btn,.tgv__nav{
  display:grid;place-items:center;padding:0;border:1px solid var(--tgv-line);border-radius:50%;cursor:pointer;
  color:#fff;background:rgba(255,255,255,.07);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:background .2s,border-color .2s,transform .2s var(--e-out),box-shadow .2s;
}
.tgv__btn{width:42px;height:42px}
.tgv__btn svg{width:17px;height:17px}
.tgv__btn:hover,.tgv__nav:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4);box-shadow:0 0 0 4px rgba(45,107,255,.18)}
.tgv__btn:active,.tgv__nav:active{transform:scale(.93)}
.tgv__zoom[aria-pressed="true"]{background:var(--tgv-blue);border-color:var(--tgv-blue)}
.tgv button:focus-visible{outline:2px solid #fff;outline-offset:2px}

/* stage */
.tgv__stage{
  position:relative;z-index:1;min-height:0;display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;gap:clamp(.3rem,1.4vw,1rem);padding:0 clamp(.5rem,1.6vw,1.4rem);
}
.tgv__nav{width:48px;height:48px;z-index:2}
.tgv__nav[hidden]{display:none}
.tgv__nav svg{width:18px;height:18px}
.tgv__view{
  position:relative;min-width:0;height:100%;overflow:hidden;
  touch-action:pan-y;cursor:zoom-in;
}
.tgv__img{
  position:absolute;inset:0;margin:auto;display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;
  border-radius:14px;user-select:none;-webkit-user-drag:none;
  box-shadow:0 0 0 1px rgba(255,255,255,.1),0 30px 80px rgba(0,0,0,.55),0 0 90px rgba(45,107,255,.14);
  will-change:transform,opacity;
  transition:transform .32s var(--e-out),filter .3s;
}
.tgv__img.is-low{filter:saturate(.9) blur(.4px)}
.tgv.is-zoomed .tgv__view{cursor:grab;touch-action:none}
.tgv.is-zoomed .tgv__view:active{cursor:grabbing}
.tgv.is-zoomed .tgv__img{border-radius:0}

/* thumbnail strip */
.tgv__bar{position:relative;z-index:2;min-width:0;padding:.7rem clamp(.6rem,2vw,1.6rem) clamp(.8rem,1.6vw,1.2rem)}
.tgv__bar[hidden]{display:none}
.tgv__thumbs{
  display:flex;gap:.5rem;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;
  padding:.3rem .1rem;margin-inline:auto;width:max-content;max-width:100%;
  overscroll-behavior:contain;-webkit-overflow-scrolling:touch;
}
.tgv__thumbs::-webkit-scrollbar{display:none}
.tgv__t{
  position:relative;flex:none;width:72px;height:52px;padding:0;border:0;border-radius:9px;overflow:hidden;
  cursor:pointer;background:#14183a;opacity:.5;
  transition:opacity .2s,transform .25s var(--e-out);
}
.tgv__t img{display:block;width:100%;height:100%;object-fit:cover}
.tgv__t::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 0 0 2px transparent;transition:box-shadow .2s;
}
.tgv__t:hover{opacity:.9}
.tgv__t.is-on{opacity:1;transform:translateY(-3px)}
.tgv__t.is-on::after{box-shadow:inset 0 0 0 2px var(--tgv-blue),0 0 18px rgba(45,107,255,.55)}

/* progress hairline */
.tgv__line{position:absolute;left:0;right:0;bottom:0;height:2px;z-index:3;background:rgba(255,255,255,.08)}
.tgv__line span{
  display:block;height:100%;transform-origin:0 50%;transform:scaleX(0);
  background:linear-gradient(90deg,var(--tgv-blue),var(--tgv-green));transition:transform .35s var(--e-out);
}

.tgv.is-zoomed .tgv__nav,.tgv.is-zoomed .tgv__bar{opacity:.35}

@media (max-width:760px){
  .tgv__nav{display:none}
  .tgv__stage{grid-template-columns:minmax(0,1fr);padding:0 .4rem}
  .tgv__cap{display:none}
  .tgv__t{width:56px;height:42px;border-radius:8px}
  .tgv__btn{width:38px;height:38px}
}
@media (prefers-reduced-motion:reduce){
  .tgv,.tgv__img,.tgv__t,.tgv__line span{transition:none}
}