/* ==========================================================================
   Product Detail Page Styles
   ========================================================================== */

/* Breadcrumbs */
.breadcrumbs {
  padding: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.breadcrumbs a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumbs a:hover {
  color: var(--color-primary-dark);
}

/* Product Hero Section */
.product-hero {
  display: grid;
  grid-template-columns: minmax(0, 55fr) minmax(0, 45fr);
  gap: 3rem;
  padding-bottom: 4rem;
}

/* Gallery */
.product-gallery {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.main-image {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background-color: var(--color-bg-white);
  aspect-ratio: 1 / 1;
}

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

.thumbnail-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.thumb {
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  aspect-ratio: 1 / 1;
  background-color: var(--color-bg-white);
}

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

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

.thumb:hover {
  opacity: 0.8;
}

/* Product Info */
.product-info {
  display: flex;
  flex-direction: column;
}

.product-info .section-title {
  margin-bottom: 0.5rem;
  font-size: 2.5rem;
  line-height: 1.2;
}

.product-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.stars {
  color: var(--color-accent);
  letter-spacing: 2px;
}

/* Feature Icons Row */
.product-features-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  background-color: var(--color-bg-white);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

/* Options */
.option-title {
  font-size: 1rem;
  margin-bottom: 0.8rem;
  font-weight: 600;
}

.pack-sizes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.pack-option {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
  background-color: var(--color-bg-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  position: relative;
}

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

.pack-option.active {
  border-color: var(--color-primary);
  background-color: rgba(27, 94, 32, 0.03);
}

.pack-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.pack-name {
  font-weight: 600;
  font-size: 1.1rem;
}

.pack-price {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.pack-badge {
  background-color: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
}

/* Actions */
.action-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.quantity-selector {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-bg-white);
  overflow: hidden;
  width: 120px;
}

.qty-btn {
  background: none;
  border: none;
  width: 40px;
  height: 50px;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}

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

#qty-input {
  width: 40px;
  height: 50px;
  border: none;
  text-align: center;
  font-size: 1rem;
  font-weight: 600;
  background: none;
  padding: 0;
  /* Hide arrows */
  -moz-appearance: textfield;
}
#qty-input::-webkit-outer-spin-button,
#qty-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.add-to-cart-btn {
  flex: 1;
  font-size: 1.1rem;
  padding: 0;
  height: 50px;
  transition: all var(--transition-fast);
}

/* Notes */
.product-notes {
  background-color: var(--color-hero-bg);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.product-notes p {
  margin-bottom: 0.5rem;
}
.product-notes p:last-child {
  margin-bottom: 0;
}

/* About This Flavour */
.about-flavour {
  padding-bottom: 4rem;
}

.about-desc {
  max-width: 800px;
  margin: 0 auto 3rem auto;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.about-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.feature-card {
  background-color: var(--color-bg-white);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-card .emoji {
  font-size: 2rem;
  display: block;
  margin-bottom: 1rem;
}

.feature-card h4 {
  font-size: 1rem;
  margin: 0;
}

/* Nutrition Highlights Grid */
.nutrition-highlights-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
}

.nutri-card {
  background-color: var(--color-bg-white);
  padding: 1.5rem 1rem;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.nutri-icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.nutri-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.3rem;
}

.nutri-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Nutrition Table & Ingredients */
.nutrition-info-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.nutrition-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.nutrition-table th, 
.nutrition-table td {
  padding: 1rem;
  text-align: right;
  border-bottom: 1px solid var(--color-border);
}

.nutrition-table th:first-child,
.nutrition-table td:first-child {
  text-align: left;
  font-weight: 600;
}

.nutrition-table th {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.nutrition-table td.indent {
  padding-left: 2rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.ingredients-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ingredients-text {
  line-height: 1.8;
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

.allergens {
  background-color: var(--color-hero-bg);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
}

/* Health Benefits */
.health-benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.benefit-card {
  background-color: var(--color-bg-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.benefit-card .emoji {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.benefit-card h4 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  color: var(--color-text);
}

.benefit-card p {
  color: var(--color-text-light);
  line-height: 1.5;
  margin: 0;
}

/* Perfect For (Scenes) */
.perfect-for-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.scene-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  aspect-ratio: 4/5;
}

.scene-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.scene-card:hover img {
  transform: scale(1.05);
}

.scene-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  padding: 2rem 1.5rem 1.5rem;
  color: #fff;
}

.scene-info h4 {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}

.scene-info p {
  font-size: 0.9rem;
  opacity: 0.9;
  margin: 0;
}

/* Storage Flow */
.storage-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--color-bg-white);
  padding: 2rem;
  border-radius: var(--radius-full);
  width: 200px;
  height: 200px;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.step-icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.flow-step h4 {
  margin: 0 0 0.5rem 0;
  color: var(--color-primary);
}

.flow-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.4;
}

.flow-arrow {
  font-size: 2rem;
  color: var(--color-accent);
}

/* FAQ Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--color-bg-white);
  margin-bottom: 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-item summary {
  padding: 1.5rem;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  list-style: none;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Related Products */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .product-hero,
  .nutrition-info-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .product-info .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .pack-sizes,
  .health-benefits-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .about-features-grid,
  .perfect-for-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nutrition-highlights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nutrition-highlights-grid .nutri-card:last-child {
    grid-column: span 2;
  }

  .storage-flow {
    flex-direction: column;
    gap: 1rem;
  }
  
  .flow-arrow {
    transform: rotate(90deg);
  }
  
  .action-row {
    flex-direction: column;
  }
  
  .quantity-selector {
    width: 100%;
    justify-content: center;
  }
  
  .qty-btn, #qty-input {
    width: 33%;
  }
}

/* 收藏按钮 */
.fav-toggle {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-white);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.fav-toggle:hover { transform: scale(1.05); }
.fav-toggle.active { border-color: var(--color-primary); }