/* Product Details page-specific styles */

/* ------ PRODUCT DETAILS GRID ------ */
.product-details-grid {
  display: grid;
  grid-template-areas:
    "visual"
    "specs-support"
    "reviews-faq"
    "related";
  grid-row-gap: var(--space-8);
  margin-top: var(--space-8);
}
.product-visual-details {
  grid-area: visual;
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
  flex-wrap: wrap;
}
.product-gallery {
  flex: 1 1 340px;
  max-width: 400px;
  min-width: 250px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.gallery-main {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: #fff;
  overflow: hidden;
  margin: 0;
}
.gallery-thumbnails {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-start;
}
.thumbnail-btn {
  background: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0;
  cursor: pointer;
  transition: border var(--transition-fast);
  width: 64px;
  height: 64px;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}
.thumbnail-btn:focus-visible, .thumbnail-btn.active {
  border: 2px solid var(--color-primary);
  outline: none;
}
.thumbnail-btn img {
  width: 100%; height: 100%; object-fit: cover;
}
.product-summary {
  flex: 2 1 340px;
  min-width: 240px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.product-features {
  margin: 0 0 var(--space-3) 0;
  padding-left: var(--space-4);
  color: var(--gray-700);
  font-size: var(--font-size-md);
  line-height: 1.7;
  list-style: disc inside;
}
.product-price {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-right: var(--space-2);
}
.product-old-price {
  color: var(--gray-400);
  text-decoration: line-through;
  font-size: var(--font-size-md);
  margin-right: var(--space-2);
}
.product-availability {
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-xs);
}
.product-availability.available {
  color: var(--color-success);
  background: #e7f9ef;
  padding: 2px 8px;
  margin-left: var(--space-1);
}
.purchase-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.purchase-actions input[type="number"] {
  width: 54px;
  height: 40px;
  font-size: var(--font-size-md);
  padding: 4px;
  text-align: center;
  border-radius: var(--radius-sm);
}
.add-to-wishlist {
  min-width: 140px;
  font-size: var(--font-size-sm);
  padding: 8px 14px;
  border-width: 2px;
}
.info-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.info-tag {
  background: var(--gray-100);
  color: var(--gray-600);
  border-radius: var(--radius-xs);
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* ------ TECHNICAL SPECS & SUPPORT ------ */
.specs-support-row {
  display: flex;
  gap: var(--space-6);
  margin-top: var(--space-7);
}
.product-specs, .product-support {
  flex: 1 1 320px;
  min-width: 240px;
}
.specs-list {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--gray-700);
}
.specs-list dt {
  color: var(--gray-900);
  font-weight: 600;
  margin-bottom: 1px;
}
.specs-list dd {
  margin: 0;
}
.support-list {
  padding-left: var(--space-2);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--gray-700);
  list-style: disc inside;
  gap: var(--space-2);
  display: flex;
  flex-direction: column;
}

/* ------ REVIEWS & FAQ ------ */
.product-reviews-faq {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.product-reviews, .product-faq {
  flex: 1 1 340px;
  min-width: 240px;
}
.review-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-3);
}
.review-item blockquote {
  font-style: italic;
  color: var(--gray-800);
  margin: 0 0 var(--space-2) 0;
}
.review-item figcaption {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  display: flex;
  align-items: center;
  gap: 6px;
}
.review-stars {
  color: var(--color-primary);
  font-size: 1em;
  letter-spacing: 0.04em;
}
.star-rating {
  color: var(--color-primary);
  font-size: 1.1em;
  vertical-align: text-bottom;
  letter-spacing: 1px;
}
.see-more-reviews {
  width: 100%;
  margin-top: var(--space-2);
  text-align: center;
  font-size: var(--font-size-sm);
  padding-top: 6px;
  padding-bottom: 6px;
}
.faq-list dt {
  font-weight: 600;
  color: var(--gray-900);
  margin-top: var(--space-4);
  margin-bottom: 3px;
}
.faq-list dd {
  color: var(--gray-700);
  margin-left: var(--space-2);
  margin-bottom: var(--space-2);
  line-height: 1.7;
}
.faq-list dt:first-child {
  margin-top: 0;
}

/* ------ RELATED PRODUCTS ------ */
.related-products {
  margin-top: var(--space-8);
}
.related-list {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
  padding: var(--space-2) 0 0 0;
  justify-content: space-between;
}
.related-item {
  flex: 1 1 180px;
  max-width: 240px;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-xs);
  padding: var(--space-3) var(--space-2);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}
.related-item a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: inherit;
}
.related-item:hover, .related-item:focus-within {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px) scale(1.03);
}
.related-item img {
  border-radius: var(--radius-md);
  max-height: 90px;
  object-fit: contain;
  background: #fff;
}
.related-title {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--gray-900);
  margin: 0;
}
.related-price {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 700;
}

/* Responsive Layouts */
@media (max-width: 1000px) {
  .product-visual-details {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-5);
  }
  .specs-support-row,
  .product-reviews-faq {
    flex-direction: column;
    gap: var(--space-5);
  }
}

@media (max-width: 700px) {
  .product-details-grid {
    margin-top: var(--space-6);
    grid-row-gap: var(--space-5);
  }
  .product-visual-details {
    gap: var(--space-4);
  }
  .related-list {
    gap: var(--space-3);
  }
}

@media (max-width: 500px) {
  .product-gallery {
    max-width: 100%;
  }
  .gallery-thumbnails {
    gap: var(--space-1);
  }
  .thumbnail-btn {
    width: 46px;
    height: 46px;
  }
  .product-summary {
    gap: var(--space-3);
  }
  .specs-support-row, .product-reviews-faq {
    gap: var(--space-3);
  }
  .related-item {
    max-width: 100%;
  }
}