/* ==========================================
   PRODUCT DETAIL PAGE
   ========================================== */

.product-detail {
  padding: var(--spacing-xl) 0;
}

.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

/* ==========================================
   PRODUCT IMAGES
   ========================================== */

.product-images {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.main-image {
  aspect-ratio: 1;
  background-color: var(--color-bone-light);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--color-border-light);
}

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

.image-thumbnails {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: var(--spacing-sm);
}

.thumbnail {
  aspect-ratio: 1;
  border: 2px solid var(--color-border-light);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  cursor: pointer;
  background: none;
  padding: 0;
  transition: border-color var(--transition-base);
}

.thumbnail:hover {
  border-color: var(--color-primary-light);
}

.thumbnail.active {
  border-color: var(--color-accent);
}

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

/* ==========================================
   PRODUCT INFO
   ========================================== */

.product-info-detail h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.product-price-detail {
  margin-bottom: var(--spacing-lg);
}

.product-price-detail .price {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.product-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

/* ==========================================
   STOCK STATUS
   ========================================== */

.stock-status {
  margin-bottom: var(--spacing-lg);
}

.in-stock {
  color: var(--color-success);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
}

.in-stock::before {
  content: '✓ ';
  font-weight: var(--font-weight-bold);
}

.out-of-stock {
  color: var(--color-error);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
}

/* ==========================================
   PRODUCT ACTIONS
   ========================================== */

.product-actions {
  margin-bottom: var(--spacing-xl);
}

.quantity-selector {
  margin-bottom: var(--spacing-md);
}

.quantity-selector label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.quantity-input {
  display: inline-flex;
  align-items: center;
  border: 2px solid var(--color-border-medium);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  background-color: var(--color-white);
}

.qty-btn {
  background-color: var(--color-bone-light);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-xl);
  cursor: pointer;
  transition: background-color var(--transition-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qty-btn:hover {
  background-color: var(--color-bone-dark);
}

.qty-btn:active {
  background-color: var(--color-primary-light);
  color: var(--color-bone);
}

.quantity-input input {
  border: none;
  width: 60px;
  text-align: center;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-text-primary);
  background-color: var(--color-white);
}

.quantity-input input:focus {
  outline: none;
}

.quantity-input input::-webkit-outer-spin-button,
.quantity-input input::-webkit-inner-spin-button {
  appearance: none;
  margin: 0;
}

.quantity-input input {
  appearance: textfield;
}

.add-to-cart-btn {
  width: 100%;
}

.add-to-cart-btn:disabled {
  background-color: var(--color-border-medium);
  cursor: not-allowed;
  color: var(--color-text-muted);
}

.add-to-cart-btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* ==========================================
   PRODUCT DETAILS
   ========================================== */

.product-details {
  background-color: var(--color-bone-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border-light);
}

.product-details h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.product-details ul {
  list-style: none;
}

.product-details li {
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border-light);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

.product-details li:last-child {
  border-bottom: none;
}

.product-details strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 968px) {
  .product-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .product-images {
    position: static;
  }
  
  .product-info-detail h1 {
    font-size: var(--font-size-2xl);
  }
  
  .product-price-detail .price {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  .image-thumbnails {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .product-info-detail h1 {
    font-size: var(--font-size-xl);
  }
  
  .product-price-detail .price {
    font-size: var(--font-size-xl);
  }
  
  .product-description {
    font-size: var(--font-size-base);
  }
}