/* =========================================================
   LATA SCIENTIFIC — product image viewer
   Same tokens as the rest of the site: --brand for the scrim, --radius
   family for corners, --ease-out for motion, --f-mono for the counter.
   The viewer is an overlay only — it adds no box to any page, so nothing
   above it can shift and no existing rule is touched.
   ========================================================= */

/* The affordance on the page: a soft zoom cursor and a barely-there lift.
   No layout property is animated, so nothing reflows on hover. */
[data-zoomable] { cursor: zoom-in; }
@media (hover: none) { [data-zoomable] { cursor: default; } }

.lbox {
  position: fixed; inset: 0; z-index: 300;
  display: grid; grid-template-rows: auto 1fr auto;
  opacity: 0; visibility: hidden; pointer-events: none;
  /* visibility flips instantly on open so the close button is focusable on
     the first frame, and is delayed on close so the fade-out is still seen.
     Transitioning it symmetrically would leave the dialog unfocusable for
     half the duration, which breaks focus management for keyboard users. */
  transition: opacity .28s var(--ease-out), visibility 0s linear .28s;
  touch-action: none; user-select: none; -webkit-user-select: none;
}
.lbox::before {
  content: ""; position: absolute; inset: 0;
  background: rgba(10,14,23,0.88);
  backdrop-filter: blur(9px) saturate(120%);
  -webkit-backdrop-filter: blur(9px) saturate(120%);
}
.lbox.is-open { opacity: 1; visibility: visible; pointer-events: auto; transition: opacity .28s var(--ease-out), visibility 0s; }

/* ---------- chrome ---------- */
.lbox__bar {
  position: relative; z-index: 2;
  display: flex; align-items: center; gap: 10px;
  padding: 14px clamp(12px, 3vw, 22px);
  color: var(--on-brand);
}
.lbox__title {
  flex: 1 1 auto; min-width: 0;
  font-family: var(--f-display); font-weight: 600; font-size: 1rem; color: #fff;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.lbox__count { font-family: var(--f-mono); font-size: 12.5px; color: var(--on-brand-dim); flex: none; }
.lbox__btn {
  display: grid; place-content: center; flex: none;
  width: 42px; height: 42px; border-radius: var(--radius-sm);
  color: var(--on-brand); background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14); cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), opacity .2s var(--ease);
}
.lbox__btn:hover { background: rgba(255,255,255,0.17); color: #fff; border-color: rgba(255,255,255,0.3); }
.lbox__btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.lbox__btn[disabled] { opacity: .32; cursor: default; }
.lbox__btn[disabled]:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.14); }

/* ---------- stage ---------- */
.lbox__stage {
  position: relative; z-index: 1;
  display: grid; place-items: center;
  overflow: hidden; min-height: 0;
  padding: 0 clamp(8px, 2vw, 20px);
}
.lbox__img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #fff;
  box-shadow: var(--shadow-lg);
  transform-origin: 0 0;
  transition: transform .26s var(--ease-out), opacity .2s var(--ease);
  will-change: transform;
}
.lbox__img.is-panning { transition: none; cursor: grabbing; }
.lbox__img.is-zoomed { cursor: grab; }
.lbox.is-swapping .lbox__img { opacity: 0; }

/* Prev / next sit over the stage on desktop, under the thumbs on phones. */
.lbox__nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 46px; height: 46px;
}
.lbox__nav--prev { left: clamp(6px, 2vw, 18px); }
.lbox__nav--next { right: clamp(6px, 2vw, 18px); }
.lbox__nav[hidden] { display: none; }

/* ---------- footer: thumbnails + zoom ---------- */
.lbox__foot {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: center; gap: 14px;
  flex-wrap: wrap;
  padding: 12px clamp(12px, 3vw, 22px) clamp(14px, 3vw, 22px);
}
.lbox__thumbs { display: flex; gap: 8px; overflow-x: auto; max-width: 100%; padding: 2px; scrollbar-width: none; }
.lbox__thumbs::-webkit-scrollbar { display: none; }
.lbox__thumbs[hidden] { display: none; }
.lbox__thumb {
  width: 58px; height: 58px; flex: none; padding: 0;
  border-radius: 9px; overflow: hidden; cursor: pointer;
  background: rgba(255,255,255,0.9);
  border: 2px solid transparent; opacity: .55;
  transition: opacity .2s var(--ease), border-color .2s var(--ease);
}
.lbox__thumb img { width: 100%; height: 100%; object-fit: contain; display: block; }
.lbox__thumb:hover { opacity: .85; }
.lbox__thumb.is-current { opacity: 1; border-color: var(--accent); }
.lbox__thumb:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.lbox__zoom { display: flex; align-items: center; gap: 8px; }
.lbox__pct { font-family: var(--f-mono); font-size: 12px; color: var(--on-brand-dim); min-width: 46px; text-align: center; }

.lbox__hint {
  position: absolute; left: 50%; bottom: 6px; transform: translateX(-50%);
  font-size: 12px; color: var(--on-brand-dim); white-space: nowrap; pointer-events: none;
}
@media (max-width: 760px) { .lbox__hint { display: none; } }

@media (max-width: 620px) {
  .lbox__bar { padding: 10px 12px; }
  .lbox__btn { width: 44px; height: 44px; }
  .lbox__nav { width: 44px; height: 44px; }
  .lbox__thumb { width: 52px; height: 52px; }
  .lbox__foot { gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .lbox, .lbox__img, .lbox__btn, .lbox__thumb { transition: none; }
}