.product-page {
  padding: var(--space-lg) var(--space-md) var(--space-4xl);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: var(--transition);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb span[data-breadcrumb-current] {
  color: var(--color-text);
  font-weight: 500;
}

/* ===== Product detail ===== */
.product-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.product-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  min-width: 0;
}

.product-main-image {
  position: relative;
  flex: 1;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-primary-bg);
}

.product-image {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(0,0,0,0.2);
}

.product-image svg {
  width: 88px;
  height: 88px;
}

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

.product-gallery-arrow {
  position: absolute;
  top: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-md);
  color: var(--color-primary-text);
  transform: translateY(-50%);
  transition: var(--transition);
  z-index: 2;
}

.product-gallery-arrow:hover {
  background: var(--color-white);
}

.product-gallery-arrow:focus-visible {
  outline: 2px solid var(--color-primary-text);
  outline-offset: 2px;
}

.product-gallery-arrow--previous {
  left: var(--space-md);
}

.product-gallery-arrow--next {
  right: var(--space-md);
}

.product-gallery-arrow svg {
  width: 20px;
  height: 20px;
}

.product-thumbnails {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding-bottom: var(--space-xs);
}

.product-thumbnail {
  width: 72px;
  height: 72px;
  flex: 0 0 72px;
  padding: 0;
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  background: var(--color-primary-bg);
  opacity: 0.65;
  transition: var(--transition);
}

.product-thumbnail:hover,
.product-thumbnail.is-active {
  opacity: 1;
}

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

.product-thumbnail:focus-visible {
  outline: 2px solid var(--color-primary-text);
  outline-offset: 2px;
}

.product-thumbnail img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.product-image-wishlist {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  background: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 2;
  color: var(--color-primary-text);
}

.product-image-wishlist svg {
  width: 18px;
  height: 18px;
}

.product-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.product-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.product-category-badge {
  background: var(--color-primary-surface);
  color: var(--color-primary-text);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: var(--text-xs);
}

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

.product-info h1 {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.5px;
  margin-bottom: var(--space-lg);
  line-height: 1.15;
}

.product-variants {
  margin-bottom: var(--space-lg);
}

.product-variants-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.product-variants h3,
.product-quantity h3 {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text);
}

.product-size-guide {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary-text);
  text-decoration: underline;
}

.variant-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.variant-chip {
  min-width: 48px;
  height: 44px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: var(--transition);
}

.variant-chip:hover:not(:disabled) {
  border-color: var(--color-primary-text);
}

.variant-chip.is-selected {
  border: 2px solid var(--color-primary-text);
  background: var(--color-primary-bg);
  color: var(--color-primary-text);
}

.variant-chip:disabled {
  border-color: var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-border);
  cursor: not-allowed;
  text-decoration: line-through;
}

.product-price-block {
  background: var(--color-primary-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.product-price {
  font-family: var(--font-heading);
  font-size: var(--text-6xl);
  font-weight: 700;
  color: var(--color-primary-text);
  letter-spacing: -1px;
}

.product-installment {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

.product-stock {
  font-size: var(--text-base);
  color: var(--color-success-text);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}

.product-quantity {
  margin-bottom: var(--space-lg);
}

.quantity-input {
  display: inline-flex;
  align-items: center;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.quantity-input button {
  width: 44px;
  height: 44px;
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.quantity-input button:last-child {
  color: var(--color-text);
}

.quantity-input input {
  width: 52px;
  height: 44px;
  text-align: center;
  border: none;
  border-left: 1.5px solid var(--color-border);
  border-right: 1.5px solid var(--color-border);
  font-weight: 600;
  font-size: var(--text-lg);
}

.product-actions {
  display: flex;
  gap: 12px;
  margin-bottom: var(--space-lg);
}

.product-add-btn {
  flex: 1;
  padding: 18px 32px;
  font-size: var(--text-lg);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 8px;
  background: var(--color-primary);
}

.product-add-btn:hover:not(:disabled) {
  background: var(--color-primary-dark);
}

.product-add-btn svg {
  width: 20px;
  height: 20px;
}

.product-wishlist-btn {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-text);
}

.product-wishlist-btn svg {
  width: 22px;
  height: 22px;
}

.product-shipping {
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
}

.product-shipping-title {
  display: block;
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.product-shipping-row {
  display: flex;
  gap: 10px;
}

.product-shipping-row input {
  flex: 1;
  min-width: 0;
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: var(--text-base);
  color: var(--color-text);
}

.product-shipping-row button {
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--text-base);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.product-shipping-row button:hover {
  border-color: var(--color-primary-text);
  color: var(--color-primary-text);
}

.product-shipping-result:not(:empty) {
  margin-top: var(--space-sm);
}

.product-shipping-option {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border-light);
}

.product-shipping-option strong {
  color: var(--color-text);
}

.product-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.product-benefits span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.product-benefits svg {
  flex-shrink: 0;
  color: var(--color-primary-text);
}

/* ===== Description tabs ===== */
.product-tabs {
  border-top: 1px solid var(--color-border-light);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
}

.product-tabs-nav {
  display: flex;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border-light);
  overflow-x: auto;
}

.product-tabs-nav button {
  min-height: 40px;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: var(--transition);
}

.product-tabs-nav button.is-active {
  color: var(--color-text);
  border-bottom-color: var(--color-primary-text);
}

.product-tab-panel p {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 640px;
}

.product-specifications {
  max-width: 640px;
  margin: 0;
}

.product-specification {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) minmax(0, 2fr);
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.product-specification:first-child {
  padding-top: 0;
}

.product-specification dt {
  color: var(--color-text);
  font-weight: 600;
}

.product-specification dd {
  margin: 0;
  color: var(--color-text-secondary);
}

/* ===== Related products ===== */
.related-products {
  margin-top: var(--space-4xl);
}

/* Grid de produtos (mesma classe usada em home.css/shop.css) */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .product-page {
    padding-top: var(--space-xl);
  }
  .product-detail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3xl);
  }
  .product-price {
    font-size: 44px;
  }
}