/* ============================================
   19. Single Product Page
   ============================================ */

.product-page {
  padding-top: 120px;
  padding-bottom: 80px;
  background: var(--bg);
  color: var(--text);
}

/* Breadcrumb */
.product-breadcrumb {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 40px;
  font-family: 'Inter', sans-serif;
}
.product-breadcrumb a {
  color: var(--text-secondary);
  transition: color .2s;
}
.product-breadcrumb a:hover { color: var(--accent); }
.product-breadcrumb .sep { margin: 0 8px; opacity: .4; }

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  margin-bottom: 80px;
}

/* Gallery */
.product-gallery__main {
  background: var(--surface);
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 24px;
}
.product-gallery__thumbs {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}
.product-gallery__thumb {
  width: 80px;
  height: 80px;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid transparent;
  background: var(--surface);
  cursor: pointer;
  padding: 4px;
  transition: border-color .2s;
}
.product-gallery__thumb.active,
.product-gallery__thumb:hover {
  border-color: var(--accent);
}
.product-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Product Info */
.product-info .eyebrow {
  display: block;
  margin-bottom: 12px;
}
.product-info__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text);
}
.product-info__price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 28px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 24px;
}
.product-info__price del {
  color: var(--text-tertiary);
  font-size: 20px;
  margin-right: 8px;
}
.product-info__excerpt {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.product-info__excerpt p { margin-bottom: 8px; }
.product-info__excerpt a { color: var(--accent); }

/* Add to Cart */
.product-info__cart {
  margin-bottom: 24px;
}
.product-info__cart .cart {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.product-info__cart .quantity {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.product-info__cart .quantity .qty {
  width: 60px;
  height: 48px;
  text-align: center;
  background: var(--surface);
  border: none;
  color: var(--text);
  font-size: 16px;
  font-family: 'Inter', sans-serif;
}
.product-info__cart .quantity .qty:focus { outline: none; }
.product-info__cart .single_add_to_cart_button {
  height: 48px;
  padding: 0 32px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 10px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background .2s;
  flex: 1;
  min-width: 180px;
}
.product-info__cart .single_add_to_cart_button:hover {
  background: var(--accent-hover);
}

/* Meta (SKU / Stock) */
.product-info__meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 32px;
  font-family: 'JetBrains Mono', monospace;
}
.product-stock.in-stock { color: var(--success); }
.product-stock.out-of-stock { color: var(--error); }

/* Specs Table */
.product-specs {
  border-top: 1px solid var(--border);
  padding-top: 32px;
}
.product-specs__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}
.product-specs__table {
  width: 100%;
  border-collapse: collapse;
}
.product-specs__table th,
.product-specs__table td {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  text-align: left;
}
.product-specs__table th {
  color: var(--text-tertiary);
  font-weight: 500;
  width: 40%;
  font-family: 'Inter', sans-serif;
}
.product-specs__table td {
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}

/* Full Description */
.product-description {
  border-top: 1px solid var(--border);
  padding-top: 60px;
  margin-bottom: 60px;
}
.product-description__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text);
}
.product-description__content {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  max-width: 800px;
}
.product-description__content p { margin-bottom: 16px; }
.product-description__content strong { color: var(--text); }
.product-description__content a { color: var(--accent); }

/* Related Products */
.product-related {
  border-top: 1px solid var(--border);
  padding-top: 60px;
}
.product-related__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  margin-bottom: 32px;
  color: var(--text);
}
.product-related__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--surface);
  border-radius: 14px;
  overflow: hidden;
  transition: transform .3s, box-shadow .3s;
  text-decoration: none;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(var(--bg-rgb), .4);
}
.related-card__img {
  aspect-ratio: 1;
  background: var(--surface-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.related-card__img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.related-card__body {
  padding: 16px;
}
.related-card__body h4 {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.3;
}
.related-card__price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  color: var(--accent);
}

/* Responsive */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-related__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .product-page { padding-top: 100px; }
  .product-related__grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .product-info__cart .cart { flex-direction: column; }
  .product-info__cart .single_add_to_cart_button { width: 100%; }
}