/**
 * Product Detail Page Styles
 * Full product detail, gallery, variants, tabs, reviews, sticky bar
 */

/* ============================================
   Breadcrumb Hero
   ============================================ */
.product-detail-hero {
  padding-block: var(--space-4) var(--space-6);
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border-light);
}

/* ============================================
   Product Gallery
   ============================================ */
.product-gallery {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.product-gallery-thumbs {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: 72px;
  flex-shrink: 0;
  position: sticky;
  top: var(--space-4);
}

.gallery-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  object-fit: cover;
  cursor: pointer;
  border: 2px solid var(--color-border-light);
  transition: border-color var(--transition-fast), opacity var(--transition-fast);
  opacity: 0.75;
}

.gallery-thumb:hover {
  border-color: var(--color-primary);
  opacity: 1;
}

.gallery-thumb.active {
  border-color: var(--color-primary);
  border-width: 2px;
  opacity: 1;
}

.gallery-main-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-gray-50);
  cursor: zoom-in;
}

.gallery-main-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.gallery-main-wrap:hover .gallery-main-img {
  transform: scale(1.04);
}

.gallery-zoom-icon {
  position: absolute;
  bottom: var(--space-3);
  inset-inline-end: var(--space-3);
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-full);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  font-size: var(--text-base);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

/* Mobile gallery: horizontal swipe strip */
.gallery-mobile-strip {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--space-2);
  scrollbar-width: none;
}

.gallery-mobile-strip::-webkit-scrollbar {
  display: none;
}

.gallery-mobile-strip .gallery-strip-img {
  flex: 0 0 100%;
  scroll-snap-align: start;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ============================================
   Product Info Block
   ============================================ */
.product-detail-info {
  padding-inline-start: var(--space-4);
}

@media (min-width: 992px) {
  .product-detail-info {
    position: sticky;
    top: var(--space-6);
  }
}

.product-category-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-gray-100);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  margin-bottom: var(--space-3);
  transition: background var(--transition-fast);
}

.product-category-badge:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.product-detail-title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: 1.3;
  margin-bottom: var(--space-2);
}

@media (min-width: 992px) {
  .product-detail-title {
    font-size: var(--text-3xl);
  }
}

.product-detail-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.product-brand-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--weight-medium);
}

.product-brand-link:hover {
  color: var(--color-primary);
}

.product-sku {
  font-family: monospace;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ============================================
   Star Rating
   ============================================ */
.product-rating {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.star-rating {
  display: flex;
  gap: 2px;
  color: var(--color-warning);
  font-size: var(--text-base);
}

.rating-count {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================
   Pricing
   ============================================ */
.product-pricing-block {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

.product-price-current {
  font-size: 2rem;
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  line-height: 1;
}

.product-price-old {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.product-discount-badge {
  background: var(--color-error);
  color: var(--color-white);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
}

/* ============================================
   Stock Badge
   ============================================ */
.product-stock-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-4);
}

.product-stock-badge.in-stock {
  background: rgba(88, 129, 87, 0.1);
  color: var(--color-success);
}

.product-stock-badge.low-stock {
  background: rgba(233, 196, 106, 0.15);
  color: #92650a;
}

.product-stock-badge.out-of-stock {
  background: rgba(214, 40, 40, 0.1);
  color: var(--color-error);
}

/* ============================================
   Variant Selectors
   ============================================ */
.variant-group {
  margin-bottom: var(--space-4);
}

.variant-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  display: block;
}

.variant-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.variant-btn {
  min-width: 48px;
  padding: var(--space-2) var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1;
  user-select: none;
}

.variant-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.variant-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--weight-semibold);
}

.variant-btn.unavailable {
  opacity: 0.35;
  text-decoration: line-through;
  cursor: not-allowed;
  pointer-events: none;
}

.variant-error {
  display: none;
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: var(--space-1);
}

.variant-group.has-error .variant-options {
  outline: 1.5px solid var(--color-error);
  border-radius: var(--radius-md);
  padding: var(--space-1);
}

.variant-group.has-error .variant-error {
  display: block;
}

/* ============================================
   Quantity Selector
   ============================================ */
.qty-selector {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.qty-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  min-width: 60px;
}

.qty-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
  font-size: var(--text-base);
  line-height: 1;
}

.qty-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.qty-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.qty-input {
  width: 60px;
  height: 36px;
  text-align: center;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  background: var(--color-surface);
  padding: 0;
}

.qty-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(85, 107, 47, 0.12);
}

/* ============================================
   Action Buttons
   ============================================ */
.product-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.btn-add-cart {
  font-weight: var(--weight-semibold);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
}

.btn-buy-now {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  font-weight: var(--weight-semibold);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
}

.btn-buy-now:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-white);
}

.btn-wishlist {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  padding: var(--space-1) 0;
  cursor: pointer;
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.btn-wishlist:hover {
  color: var(--color-error);
}

.btn-wishlist.active {
  color: var(--color-error);
}

.btn-wishlist.active .bi-heart::before {
  content: "\f415"; /* bi-heart-fill */
}

/* ============================================
   Share Row
   ============================================ */
.product-share-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
}

.share-label {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.btn-share {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-text-secondary);
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.btn-share:hover {
  color: var(--color-primary);
}

/* ============================================
   Product Tabs
   ============================================ */
.product-tabs-section {
  padding-block: var(--space-8);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

.product-tabs .nav-tabs {
  border-bottom: 2px solid var(--color-border-light);
  gap: var(--space-1);
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.product-tabs .nav-tabs::-webkit-scrollbar {
  display: none;
}

.product-tabs .nav-link {
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  padding: var(--space-3) var(--space-4);
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.product-tabs .nav-link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.product-tabs .nav-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: none;
  font-weight: var(--weight-semibold);
}

.tab-content-body {
  padding-top: var(--space-6);
}

.product-description-content {
  color: var(--color-text-primary);
  line-height: 1.8;
  max-width: 800px;
}

.product-description-content p {
  margin-bottom: var(--space-4);
}

/* ============================================
   Specifications Table
   ============================================ */
.specs-group {
  margin-bottom: var(--space-6);
}

.specs-group-title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-light);
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table tr:nth-child(even) td {
  background: var(--color-gray-50);
}

.specs-table td {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  vertical-align: top;
}

.specs-table td:first-child {
  color: var(--color-text-secondary);
  font-weight: var(--weight-medium);
  width: 40%;
  white-space: nowrap;
}

.specs-table td:last-child {
  color: var(--color-text-primary);
}

/* ============================================
   Shipping Tab
   ============================================ */
.shipping-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
}

.shipping-info-icon {
  font-size: var(--text-2xl);
  color: var(--color-primary);
  flex-shrink: 0;
}

.shipping-info-body h6 {
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-1);
}

.shipping-info-body p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ============================================
   Reviews Shell
   ============================================ */
.reviews-section {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-background);
}

.reviews-summary {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.reviews-average-score {
  font-size: 3rem;
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: 1;
}

.reviews-empty {
  text-align: center;
  padding: var(--space-10) var(--space-4);
  color: var(--color-text-muted);
}

.reviews-empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-3);
  color: var(--color-gray-300);
}

/* ============================================
   Rating Summary
   ============================================ */
.rating-summary {
  display: flex;
  align-items: flex-start;
  gap: var(--space-6);
  flex-wrap: wrap;
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.rating-summary-score {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  min-width: 90px;
}

.rating-avg-large {
  font-size: 3rem;
  font-weight: var(--weight-bold);
  line-height: 1;
  color: var(--color-text-primary);
}

.rating-stars-large {
  font-size: 1.1rem;
}

.rating-count-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.rating-distribution {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.rating-bar-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.rating-bar-label {
  width: 2.5rem;
  font-size: var(--text-sm);
  text-align: end;
  flex-shrink: 0;
}

.rating-bar {
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--color-border-light);
}

.rating-bar .progress-bar {
  border-radius: var(--radius-full);
}

.rating-bar-count {
  width: 1.5rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* ============================================
   Review Form Card
   ============================================ */
.review-form-card {
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

/* Pure CSS star selector */
.star-select {
  display: flex;
  flex-direction: row-reverse;
  justify-content: flex-end;
  gap: 4px;
}

.star-radio {
  position: absolute;
  opacity: 0;
  width: 0;
}

.star-label {
  font-size: 1.8rem;
  color: var(--color-border);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.star-label i {
  pointer-events: none;
}

/* Highlight on hover / checked */
.star-select .star-label:hover,
.star-select .star-label:hover ~ .star-label,
.star-select .star-radio:checked ~ .star-label {
  color: #f59e0b;
}

/* ============================================
   Review Cards
   ============================================ */
.review-card {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.review-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.review-meta {
  flex: 1;
}

.review-body {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* RTL adjustments */
[dir="rtl"] .rating-bar-label {
  text-align: start;
}

[dir="rtl"] .star-select {
  flex-direction: row;
}

/* ============================================
   Related Products Section
   ============================================ */
.related-products-section {
  padding-block: var(--space-8);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

/* ============================================
   Lightbox Modal
   ============================================ */
#productLightboxModal .modal-dialog {
  max-width: 800px;
}

#productLightboxModal .modal-content {
  background: #000;
  border: none;
}

#productLightboxModal .modal-header {
  border: none;
  padding: var(--space-3);
}

.lightbox-img {
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-white);
  font-size: var(--text-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-fast);
  z-index: 10;
}

.lightbox-nav-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.lightbox-prev-btn {
  inset-inline-start: var(--space-3);
}

.lightbox-next-btn {
  inset-inline-end: var(--space-3);
}

/* ============================================
   Mini Cart Offcanvas
   ============================================ */
.mini-cart-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.mini-cart-item-img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.mini-cart-item-info {
  flex: 1;
  min-width: 0;
}

.mini-cart-item-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: var(--space-1);
}

.mini-cart-item-price {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
}

.mini-cart-item-qty {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ============================================
   Sticky Cart Bar
   ============================================ */
.sticky-cart-bar {
  position: fixed;
  bottom: 0;
  inset-inline-start: 0;
  inset-inline-end: 0;
  width: 100%;
  background: var(--color-surface);
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.12);
  z-index: 1040;
  padding: var(--space-3) 0;
  transform: translateY(100%);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.sticky-cart-bar.visible {
  transform: translateY(0);
  opacity: 1;
}

.sticky-cart-bar-inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.sticky-cart-product-thumb {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.sticky-cart-product-info {
  flex: 1;
  min-width: 0;
}

.sticky-cart-product-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-text-primary);
}

.sticky-cart-product-price {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
}

.sticky-add-cart-btn {
  flex-shrink: 0;
  white-space: nowrap;
}

/* ============================================
   Mobile Overrides
   ============================================ */
@media (max-width: 991px) {
  .product-detail-info {
    padding-inline-start: 0;
    padding-top: var(--space-4);
  }

  .product-gallery-thumbs {
    display: none !important;
  }

  .product-gallery {
    flex-direction: column;
  }

  .product-detail-title {
    font-size: var(--text-xl);
  }

  .product-price-current {
    font-size: 1.75rem;
  }

  .product-actions {
    flex-direction: row;
  }

  .btn-add-cart,
  .btn-buy-now {
    flex: 1;
  }
}

@media (max-width: 575px) {
  .product-actions {
    flex-direction: column;
  }

  .product-tabs .nav-link {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
  }

  .sticky-cart-product-name {
    max-width: 140px;
  }
}

/* ============================================
   RTL Overrides
   ============================================ */
[dir="rtl"] .product-detail-info {
  padding-inline-start: 0;
  padding-inline-end: var(--space-4);
}

@media (max-width: 991px) {
  [dir="rtl"] .product-detail-info {
    padding-inline-end: 0;
  }
}

[dir="rtl"] .gallery-thumb:first-child {
  margin-top: 0;
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .gallery-main-img,
  .sticky-cart-bar,
  .variant-btn,
  .gallery-thumb {
    transition: none;
  }
}