/* MUSAI — product page (PP-1 ref: 50:50, desktop stacked images, mobile swipe, spec tabs) */

.pdp { padding-top: clamp(1.25rem, 3vw, 2.5rem); padding-bottom: var(--space-section); }

.pdp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 4rem); align-items: start; }
@media (max-width: 900px) { .pdp-grid { grid-template-columns: 1fr; gap: 1.75rem; } }

/* ---- gallery: desktop = stacked (PP-1), mobile = swipe carousel ---- */
.gallery { position: relative; }
.pdp-media { display: flex; flex-direction: column; gap: clamp(0.5rem, 1.4vw, 0.9rem); }
.pdp-media figure { position: relative; background: var(--paper-2); border: 1px solid var(--hair-soft); border-radius: var(--radius); }
.pdp-media img { width: 100%; height: auto; display: block; object-fit: contain; aspect-ratio: 16 / 11; }
.pdp-media figcaption { position: absolute; left: 1rem; bottom: 0.85rem; }
.g-arrow, .g-count { display: none; }

@media (max-width: 900px) {
  .pdp-media { flex-direction: row; overflow-x: auto; scroll-snap-type: x mandatory; gap: 0; scrollbar-width: none; -ms-overflow-style: none; }
  .pdp-media::-webkit-scrollbar { display: none; }
  .pdp-media figure { flex: 0 0 100%; scroll-snap-align: center; }
  .g-arrow { display: flex; align-items: center; justify-content: center; position: absolute; top: 42%; transform: translateY(-50%);
             z-index: 2; width: 36px; height: 36px; background: none; border: 0; color: var(--ink); cursor: pointer; padding: 0; }
  .g-arrow svg { width: 26px; height: 26px; display: block; }
  .g-prev { left: 0.25rem; } .g-next { right: 0.25rem; }
  .g-count { display: block; margin-top: 0.6rem; font-family: var(--mono); font-weight: 500; font-size: 0.7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mid); text-align: center; }
}

/* ---- info column (sticky on desktop) ---- */
.pdp-info { position: sticky; top: 1.5rem; align-self: start; }
@media (max-width: 900px) { .pdp-info { position: static; } }
.pdp-title { font-family: var(--sans); font-weight: 400; text-transform: none; letter-spacing: 0; font-size: clamp(1.9rem, 1.2rem + 2.4vw, 2.8rem); line-height: 1.05; }
.pdp-sub { font-family: var(--mono); font-weight: 500; font-size: 0.76rem; letter-spacing: .14em; color: var(--ink-2); text-transform: uppercase; margin-top: 0.85rem; }
.pdp-desc { color: var(--ink-2); margin-top: 1.4rem; max-width: 48ch; line-height: 1.7; }
.pdp-desc p + p { margin-top: 0.9rem; }
.pdp-cta { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-top: 1.9rem; margin-bottom: 3rem; }

/* ---- spec tabs (CSS-only) ---- */
.spec-tabs { position: relative; }
.spec-tabs .tabstate { position: absolute; opacity: 0; pointer-events: none; }
.tabrow { display: flex; gap: 1.6rem; border-bottom: 1px solid var(--hair); }
.spectab { font-family: var(--sans); font-weight: 400; font-size: 1rem; color: var(--mid); cursor: pointer;
           padding-bottom: 0.7rem; margin-bottom: -1px; border-bottom: 1px solid transparent; transition: color .2s, border-color .2s; }
.spectab:hover { color: var(--ink); }
.specpane { display: none; }
#sp-spec:checked ~ .tabrow .spectab[for="sp-spec"],
#sp-det:checked  ~ .tabrow .spectab[for="sp-det"]  { color: var(--ink); border-color: var(--ink); }
#sp-spec:checked ~ .pane-spec { display: block; }
#sp-det:checked  ~ .pane-det  { display: block; }
.spec-row { display: grid; grid-template-columns: 0.9fr 1fr; gap: 1rem; padding: 0.8rem 0; border-bottom: 1px solid var(--hair-soft); }
.spec-row dt { font-family: var(--mono); font-weight: 400; font-size: 0.66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mid); padding-top: 2px; }
.spec-row dd { font-size: 0.9rem; color: var(--ink); }
.spec-note { color: var(--ink-2); font-size: 0.84rem; line-height: 1.6; margin-top: 1.6rem; max-width: 46ch; }

/* ---- prev / next ---- */
.pdp-nav { display: flex; justify-content: space-between; border-top: 1px solid var(--hair); margin-top: var(--space-section); padding-top: 1.5rem; font-family: var(--mono); font-weight: 500; font-size: 0.72rem; letter-spacing: .12em; text-transform: uppercase; }
.pdp-nav a { color: var(--ink-2); } .pdp-nav a:hover { color: var(--ink); }
.pdp-nav .disabled { color: var(--hair); pointer-events: none; }