/* ═══════════════════════════════════════════════════════════════
   Product Detail Page — MC Виан B2B Portal
   ═══════════════════════════════════════════════════════════════ */

/* ── Product Top (two-column) ────────────────────────────── */
.product-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  padding: var(--space-xl) 0;
  align-items: start;
}

/* ── Gallery ─────────────────────────────────────────────── */
.product-gallery__main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  aspect-ratio: 1 / 1;
  cursor: zoom-in;
  user-select: none;
  -webkit-user-select: none;
}

.product-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.25s ease;
  will-change: transform;
  pointer-events: none;
}

.product-gallery__main.is-zoomed {
  cursor: grab;
}

.product-gallery__main.is-zoomed img {
  transition: none;
}

/* Zoom level indicator */
.product-gallery__zoom-level {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: 2;
  backdrop-filter: blur(4px);
}

.product-gallery__thumbs {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  overflow-x: auto;
}

.product-gallery__thumb {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-surface);
  padding: 0;
  flex-shrink: 0;
  transition: var(--transition);
}

.product-gallery__thumb.is-active {
  border-color: var(--color-primary);
}

.product-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Product Info ────────────────────────────────────────── */
.product-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.product-info__article {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.product-info__name {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
}

.product-info__status { margin: var(--space-xs) 0; }

.product-info__prices {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.product-info__price {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
}

.product-info__price--dealer {
  color: var(--color-success);
}

.product-info__price--retail {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  opacity: 0.5;
}

.product-info__discount-badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-success);
  background: rgba(34, 197, 94, 0.1);
  border-radius: var(--radius-sm);
  vertical-align: middle;
  margin-left: var(--space-xs);
}

.product-info__price-locked {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.product-info__price-locked a {
  color: var(--color-primary);
  text-decoration: none;
}

/* ── Quantity Control ────────────────────────────────────── */
.product-info__cart-actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.quantity-control {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.quantity-control__btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  border: none;
  cursor: pointer;
  color: var(--color-text);
  transition: var(--transition);
}

.quantity-control__btn:hover {
  background: var(--color-border);
}

.quantity-control__input {
  width: 56px;
  height: 40px;
  text-align: center;
  border: none;
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  font-size: 0.9375rem;
  font-weight: 600;
  -moz-appearance: textfield;
}

.quantity-control__input::-webkit-inner-spin-button,
.quantity-control__input::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.product-info__quick-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ── Product Tabs ────────────────────────────────────────── */
.product-tabs {
  margin: var(--space-2xl) 0;
}

.product-tabs .tab-pane {
  padding: var(--space-xl) 0;
}

/* ── Specs Table ─────────────────────────────────────────── */
.specs-group-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.specs-group-title:first-child {
  margin-top: 0;
}

.product-tabs .table--striped {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-lg);
}

.product-tabs .table--striped td {
  padding: 10px 14px;
  font-size: 0.9375rem;
  line-height: 1.5;
  border-bottom: 1px solid var(--color-border-light, #f0f0f0);
  vertical-align: top;
}

.product-tabs .table--striped tr:nth-child(even) td {
  background: var(--color-bg);
}

.product-tabs .table--striped tr:hover td {
  background: var(--color-primary-light);
}

.specs-label {
  width: 40%;
  color: var(--color-text-secondary);
  font-weight: 400;
}

.specs-value {
  font-weight: 500;
  color: var(--color-text);
}

.specs-unit {
  font-weight: 400;
  color: var(--color-text-muted, var(--color-text-secondary));
  font-size: 0.875em;
}

/* ── Product Description ─────────────────────────────────── */
.product-description__content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  max-width: 780px;
  letter-spacing: 0.01em;
}

.product-description__content p,
.product-description__content br + br {
  margin-bottom: var(--space-md);
}

.product-description__meta {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light, #f0f0f0);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.product-description__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.product-description__meta-item i {
  font-size: 1.125rem;
  color: var(--color-primary);
}

.product-description__meta-item a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.product-description__meta-item a:hover {
  text-decoration: underline;
}

/* Empty description state */
.product-description--empty {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  color: var(--color-text-secondary);
}

.product-description--empty i {
  font-size: 3rem;
  color: var(--color-border);
  display: block;
  margin-bottom: var(--space-md);
}

.product-description--empty p {
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--space-xs);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Documents List ──────────────────────────────────────── */
.docs-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.docs-list__item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
}

.docs-list__item:hover {
  background: var(--color-primary-light);
}

.docs-list__item i:first-child {
  font-size: 1.25rem;
  color: var(--color-danger);
}

.docs-list__item span {
  flex: 1;
}

.docs-list__item i:last-child {
  color: var(--color-primary);
}

/* ── Related ─────────────────────────────────────────────── */
.related-section .products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.related-section .card-product {
  min-width: 0;
}

/* ── Total Price Display ─────────────────────────────────── */
.product-info__total {
  margin-top: var(--space-xs);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.product-info__total span {
  font-weight: 600;
  color: var(--color-text);
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 991px) {
  .related-section .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .product-top {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .product-info__name { font-size: 1.25rem; }

  .product-info__cart-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .quantity-control { align-self: flex-start; }

  .related-section .products-grid {
    grid-template-columns: 1fr;
  }
}