/* =========================================================================
   produkt.css — Apple-design product detail page (Orgon Kissen)
   Reuses the design tokens from styles.css (:root vars). Adds the
   apple-design type scale, rem spacing, glass materials, gallery & buy-bar.
   Interactive motion lives in produkt.js via springs — CSS never animates
   transform on anything the user touches.
   ========================================================================= */

/* ---- rem spacing scale (one series; scales with Dynamic Type §15) ---- */
:root {
  --s-1: 0.25rem;  --s-2: 0.5rem;  --s-3: 0.75rem; --s-4: 1rem;
  --s-6: 1.5rem;   --s-8: 2rem;    --s-12: 3rem;   --s-16: 4rem;  --s-24: 6rem;
}

/* ---- Type scale — size-specific tracking & leading (§15) ---- */
.t-label {
  font-family: var(--font-sans);
  font-size: 0.8125rem; line-height: 1.4; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--color-sienna); font-weight: 500;
}
.t-display {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(2rem, 5vw, 3rem); line-height: 1.08; letter-spacing: -0.02em;
  text-wrap: balance;
}
.t-heading {
  font-family: var(--font-serif); font-weight: 400;
  font-size: 1.5rem; line-height: 1.15; letter-spacing: -0.01em;
}
.t-sub {
  font-family: var(--font-serif); font-weight: 400;
  font-size: 1.25rem; line-height: 1.3; letter-spacing: -0.005em;
}
.t-body { font-size: 1rem; line-height: 1.6; letter-spacing: 0; color: var(--color-charcoal); }
.t-price { font-family: var(--font-sans); font-size: 1.25rem; line-height: 1.2; letter-spacing: 0; font-variant-numeric: tabular-nums; }

/* ---- Placeholder marker (no invented content) ---- */
.ph {
  color: var(--color-sienna);
  background: rgba(31, 78, 121, 0.08);
  padding: 0.05em 0.4em; border-radius: 3px; font-weight: 500;
  font-size: 0.95em;
}

/* =========================================================================
   Layout
   ========================================================================= */
.pdp { padding-block: var(--s-8) var(--s-16); }
.pdp__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--s-12);
  align-items: start;
}
.pdp__crumbs { margin-bottom: var(--s-6); }
.pdp__crumbs a { color: var(--color-smoke); font-size: 0.8125rem; letter-spacing: 0.02em; }
.pdp__crumbs a:hover { color: var(--color-sienna); }

/* ---- Info column ---- */
.pdp__info { position: sticky; top: 5.5rem; display: flex; flex-direction: column; gap: var(--s-6); }
.pdp__head { display: flex; flex-direction: column; gap: var(--s-2); }
.pdp__title { margin: 0; }
.pdp__pricing { display: flex; align-items: baseline; gap: var(--s-3); }
.pdp__benefit { max-width: 34ch; }

.field { display: flex; flex-direction: column; gap: var(--s-3); }
.field__label { display: flex; justify-content: space-between; align-items: baseline; }
.field__label .chosen { color: var(--color-ink); font-size: 0.875rem; }

/* Variant pills — press feedback comes from a spring in produkt.js */
.variants { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.variant {
  --press: 1;
  transform: scale(var(--press));
  padding: 0.6rem 1rem; border-radius: 999px;
  border: 1px solid var(--color-ash-strong); background: var(--color-white);
  color: var(--color-ink); font: inherit; font-size: 0.9375rem;
  cursor: pointer; touch-action: manipulation; will-change: transform;
}
.variant[aria-pressed="true"] { background: var(--color-ink); color: var(--color-white); border-color: var(--color-ink); }
.variant:focus-visible { outline: 2px solid var(--color-sienna); outline-offset: 2px; }

/* Quantity */
.qty { display: inline-flex; align-items: center; gap: 0.25rem; border: 1px solid var(--color-ash-strong); border-radius: 999px; padding: 0.25rem; align-self: flex-start; }
.qty button { --press: 1; transform: scale(var(--press)); width: 2rem; height: 2rem; display: grid; place-items: center; border: 0; background: transparent; border-radius: 999px; font-size: 1.1rem; color: var(--color-ink); cursor: pointer; touch-action: manipulation; will-change: transform; }
.qty span { min-width: 1.75rem; text-align: center; font-variant-numeric: tabular-nums; }

/* Primary CTA — the single high-contrast element on the page (§16) */
.cta {
  --press: 1;
  transform: scale(var(--press));
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  width: 100%; height: 3.25rem; padding: 0 1.5rem;
  border: 0; border-radius: 0.5rem;
  background: var(--color-ink); color: var(--color-white);
  font-family: var(--font-sans); font-size: 1rem; font-weight: 500; letter-spacing: 0.01em;
  cursor: pointer; touch-action: manipulation; will-change: transform;
}
.cta:focus-visible { outline: 2px solid var(--color-sienna); outline-offset: 3px; }

.pdp__assur { display: flex; flex-wrap: wrap; gap: var(--s-4); font-size: 0.8125rem; color: var(--color-smoke); }
.pdp__assur span { display: inline-flex; align-items: center; gap: 0.4rem; }

/* ---- Prose sections (Vielseitige Anwendung, Wirkung) ---- */
.pdp__prose { display: flex; flex-direction: column; gap: var(--s-3); padding-top: var(--s-6); border-top: 1px solid var(--color-ash); }
.pdp__prose .t-label { color: var(--color-sienna); }
.pdp__prose-title { margin: 0.1rem 0 var(--s-2); }
.pdp__prose p { margin: 0; }
.pdp__prose-note {
  margin: var(--s-2) 0 0; padding-top: var(--s-3); border-top: 1px solid var(--color-ash);
  font-size: 0.75rem; line-height: 1.5; color: var(--color-smoke);
}
.use-list { list-style: none; margin: var(--s-2) 0 0; padding: 0; display: flex; flex-direction: column; gap: var(--s-3); }
.use-list li { display: flex; align-items: flex-start; gap: 0.6rem; }
.use-list li svg { flex: none; margin-top: 0.18em; }
.use-list__t { display: block; font-family: var(--font-sans); font-weight: 600; color: var(--color-ink); font-size: 0.9375rem; }
.use-list__d { display: block; font-size: 0.9375rem; margin-top: 0.1rem; }

/* ---- Details (opaque cards, flat — never glass on glass §12) ---- */
.pdp__details { margin-top: var(--s-4); display: flex; flex-direction: column; }
.disc { border-top: 1px solid var(--color-ash); }
.disc:last-child { border-bottom: 1px solid var(--color-ash); }
.disc__q { --press: 1; transform: scale(var(--press)); transform-origin: left center; width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 0; background: none; border: 0; text-align: left; font-family: var(--font-serif); font-size: 1.125rem; color: var(--color-ink); cursor: pointer; }
.disc__plus { color: var(--color-sienna); flex: none; }
.disc__a { overflow: hidden; height: 0; }
.disc__a-inner { padding-bottom: 1rem; }

/* =========================================================================
   Gallery — opaque surface; drag/flick & spring settle in produkt.js
   ========================================================================= */
.gallery { display: flex; flex-direction: column; gap: var(--s-3); }
.gallery__viewport {
  position: relative; overflow: hidden;
  border-radius: 0.75rem; border: 1px solid var(--color-ash);
  background: var(--surface-fog);
  touch-action: pan-y;              /* let vertical page scroll through; we own horizontal */
}
.gallery__track { display: flex; will-change: transform; }
.gallery__frame { flex: 0 0 100%; aspect-ratio: 1 / 1; position: relative; }
.gallery__frame svg, .gallery__frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery__caption {
  position: absolute; left: 0.75rem; bottom: 0.75rem;
  font-size: 0.75rem; letter-spacing: 0.04em;
  background: rgba(246, 249, 252, 0.7); backdrop-filter: blur(6px);
  color: var(--color-sienna); padding: 0.3rem 0.6rem; border-radius: 999px;
}
.gallery__dots { display: flex; gap: 0.5rem; justify-content: center; }
.gallery__dot { --press: 1; transform: scale(var(--press)); width: 0.5rem; height: 0.5rem; border-radius: 999px; border: 0; padding: 0; background: var(--color-ash-strong); cursor: pointer; will-change: transform; }
.gallery__dot[aria-current="true"] { background: var(--color-sienna); }
.gallery__thumbs { display: flex; gap: 0.5rem; }
.gallery__thumb { --press: 1; transform: scale(var(--press)); width: 4rem; height: 4rem; border-radius: 0.5rem; overflow: hidden; border: 1px solid var(--color-ash); background: var(--surface-fog); cursor: pointer; padding: 0; will-change: transform; }
.gallery__thumb[aria-current="true"] { border-color: var(--color-ink); }
.gallery__thumb svg { width: 100%; height: 100%; }

/* Fly-to-cart dot (spring-animated in JS) */
.fly-dot {
  position: fixed; z-index: 400; width: 1rem; height: 1rem; border-radius: 999px;
  background: var(--color-sienna); pointer-events: none; will-change: transform, opacity;
  left: 0; top: 0;
}

/* =========================================================================
   Glass Buy-Bar — floating chrome, content scrolls under (§12).
   Hidden below the fold; produkt.js springs it in when the inline CTA leaves.
   ========================================================================= */
.buybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  transform: translateY(100%);        /* driven by a spring in JS */
  will-change: transform;
  background: rgba(246, 249, 252, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid rgba(255, 255, 255, 0.5);   /* bright edge = light on the material */
  box-shadow: 0 -8px 32px -12px rgba(21, 26, 33, 0.28);
}
.buybar::before {                      /* scroll-edge fade, not a hard divider (§12) */
  content: ""; position: absolute; left: 0; right: 0; top: -1.5rem; height: 1.5rem;
  background: linear-gradient(to top, rgba(246, 249, 252, 0.5), transparent);
  pointer-events: none;
}
.buybar__row { display: flex; align-items: center; gap: var(--s-4); padding-block: 0.75rem; }
.buybar__meta { display: flex; flex-direction: column; line-height: 1.2; }
.buybar__name { font-family: var(--font-serif); font-size: 1rem; }
.buybar__price { font-size: 0.875rem; color: var(--color-charcoal); font-variant-numeric: tabular-nums; }
.buybar .cta { width: auto; margin-left: auto; padding-inline: 1.75rem; }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 900px) {
  .pdp__grid { grid-template-columns: 1fr; gap: var(--s-8); }
  .pdp__info { position: static; }
  .buybar__name, .buybar__price { max-width: 40vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}

/* =========================================================================
   Accessibility signals — baked in from the start (§14)
   ========================================================================= */
@media (prefers-reduced-transparency: reduce) {
  .buybar { background: var(--color-cream); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .buybar::before { display: none; }
  .gallery__caption { background: var(--color-cream); backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  .variant, .qty, .cta, .gallery__viewport, .buybar { border: 1px solid var(--color-ink); }
  .t-body, .buybar__price, .pdp__assur { color: var(--color-ink); }
}
@media (prefers-reduced-motion: reduce) {
  /* springs already jump (spring.js §14); ensure nothing else moves */
  .variant, .qty button, .cta, .gallery__track, .gallery__dot, .gallery__thumb, .disc__q { will-change: auto; }
}

/* =========================================================================
   Reviews
   ========================================================================= */
.reviews { margin-top: var(--s-16); border-top: 1px solid var(--color-ash); padding-top: var(--s-8); }
.reviews__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--s-4); flex-wrap: wrap; margin-bottom: var(--s-6); }
.reviews__avg { display: inline-flex; align-items: center; gap: 0.5rem; }
.review-card__stars { display: inline-flex; gap: 2px; }
.reviews__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-4); }
.review-card {
  margin: 0; padding: var(--s-6);
  background: var(--color-white); border: 1px solid var(--color-ash); border-radius: 0.75rem;
  display: flex; flex-direction: column; gap: var(--s-3);
}
.review-card__text { margin: 0; color: var(--color-charcoal); }
@media (max-width: 760px) { .reviews__grid { grid-template-columns: 1fr; } }
@media (prefers-contrast: more) { .review-card { border-color: var(--color-ink); } }