/* ============================================================
   Product Single Page
   ============================================================ */

.product-page { padding: clamp(3rem, 6vw, 5rem) 0 clamp(4rem, 8vw, 7rem); }

.product-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2.5rem, 5vw, 6rem);
  align-items: start;
}

/* ── Gallery ── */
.product-gallery { position: sticky; top: calc(var(--header-height) + 2rem); }

.product-main-img-wrap {
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--surface-warm);
  margin-bottom: 1rem;
  cursor: zoom-in;
}
.product-main-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 600ms ease;
}
.product-main-img-wrap:hover .product-main-img { transform: scale(1.04); }

.product-thumbs {
  display: flex;
  gap: 0.625rem;
  flex-wrap: wrap;
}
.product-thumb {
  width: 72px;
  height: 96px;
  object-fit: cover;
  object-position: top center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--transition), opacity var(--transition);
  opacity: 0.65;
}
.product-thumb.active,
.product-thumb:hover { border-color: var(--gold); opacity: 1; }

/* Lightbox */
.product-lightbox {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0,0,0,0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}
.product-lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  object-position: top center;
}
.lightbox-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 0.5rem;
}
.lightbox-prev, .lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 1rem 0.875rem;
  transition: background var(--transition);
}
.lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,0.2); }
.lightbox-prev { left: 1.5rem; }
.lightbox-next { right: 1.5rem; }

/* ── Product Details ── */
.product-details { display: flex; flex-direction: column; gap: 1.5rem; }

.product-breadcrumbs { margin-bottom: 0.5rem; }

.product-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.1;
  margin: 0;
}

.product-cats {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.product-cat-tag {
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 0.25rem 0.75rem;
  transition: background var(--transition), color var(--transition);
}
.product-cat-tag:hover { background: var(--gold); color: #0E0E10; }

.product-desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 55ch;
}
.product-desc p { color: var(--text-secondary); margin-bottom: 0.75rem; }

/* ── Specs Table ── */
.product-specs { border-top: 1px solid var(--border); padding-top: 1.5rem; }
.product-specs-title {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.spec-row { display: flex; flex-direction: column; gap: 0.2rem; }
.spec-label {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.spec-value { font-size: 0.9375rem; color: var(--text-primary); }

/* ── Inquiry Form ── */
.product-inquiry {
  background: var(--surface-warm);
  border: 1px solid var(--border);
  padding: 2rem;
  margin-top: 0.5rem;
}
.product-inquiry-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}
.product-inquiry-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: none;
}
.inquiry-form { display: flex; flex-direction: column; gap: 1rem; }
.inquiry-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.inquiry-submit { align-self: flex-start; }
.inquiry-success, .inquiry-error {
  padding: 0.875rem 1rem;
  font-size: 0.875rem;
  display: none;
}
.inquiry-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.inquiry-error   { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.inquiry-success.is-visible, .inquiry-error.is-visible { display: block; }

/* ── Related Products ── */
.related-products { padding: clamp(3rem, 6vw, 5rem) 0; border-top: 1px solid var(--border); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .product-layout { grid-template-columns: 1fr; }
  .product-gallery { position: static; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .inquiry-form-row { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}