/* Product Detail Page Styles */

.product-hero {
  padding: var(--space-xl) 0;
  background: white;
  border-bottom: 1px solid var(--color-border);
}

.product-hero__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
}

/* Product Image Area */
.product-image-area {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.product-image-main {
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4/3;
}

.product-image-svg {
  max-width: 100%;
  max-height: 100%;
}

.product-image-thumbs {
  display: flex;
  gap: var(--space-sm);
}

.thumb {
  width: 80px;
  height: 60px;
  background: var(--color-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.thumb.active,
.thumb:hover {
  border-color: var(--color-primary);
}

.thumb svg {
  width: 100%;
  height: 100%;
}

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

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

.product-series {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.product-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.product-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
}

.product-status {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.stock-quantity {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.product-key-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
}

.key-spec {
  text-align: center;
}

.key-spec__label {
  display: block;
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-bottom: 4px;
}

.key-spec__value {
  display: block;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.product-description {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.product-actions {
  display: flex;
  gap: var(--space-md);
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.meta-item {
  font-size: 14px;
}

.meta-label {
  color: var(--color-text-tertiary);
}

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

/* Product Details Tabs */
.product-details {
  padding: var(--space-3xl) 0;
  background: var(--color-secondary);
}

.tab-container {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.tab-nav {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-secondary);
}

.tab-nav__item {
  padding: var(--space-md) var(--space-xl);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab-nav__item:hover {
  color: var(--color-primary);
}

.tab-nav__item.active {
  color: var(--color-primary);
  background: white;
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
  padding: var(--space-xl);
}

.tab-content.active {
  display: block;
}

.tab-content h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.tab-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: var(--space-xl) 0 var(--space-md);
}

.tab-content p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.tab-content__grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-2xl);
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: var(--space-sm);
  font-size: 15px;
  color: var(--color-text-secondary);
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

/* FAE Review Section */
.fae-review {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
  border-left: 4px solid var(--color-primary);
}

.fae-review__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.fae-avatar {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.fae-avatar svg {
  width: 100%;
  height: 100%;
}

.fae-info h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 4px;
}

.fae-title {
  font-size: 13px;
  color: var(--color-text-tertiary);
}

.fae-review__content p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  font-style: italic;
}

.fae-review__content p:last-child {
  margin-bottom: 0;
}

/* Selection Guide CTA */
.selection-guide-cta {
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-xl);
}

.selection-guide-cta h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-sm);
}

.selection-guide-cta p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

.selection-guide-cta a {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
}

.selection-guide-cta a:hover {
  text-decoration: underline;
}

/* Tab Sidebar */
.tab-content__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.info-card {
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.info-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.spec-mini-table {
  width: 100%;
  font-size: 14px;
}

.spec-mini-table td {
  padding: var(--space-sm) 0;
  color: var(--color-text-secondary);
}

.spec-mini-table td:last-child {
  text-align: right;
  font-weight: 500;
  color: var(--color-text-primary);
}

.related-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.related-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 14px;
}

.related-list li:last-child {
  border-bottom: none;
}

.related-list a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.related-list a:hover {
  text-decoration: underline;
}

/* Specifications Table */
.spec-table-wrapper {
  overflow-x: auto;
  margin: 0 calc(-1 * var(--space-xl));
  padding: 0 var(--space-xl);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.spec-table th {
  text-align: left;
  padding: var(--space-md);
  font-weight: 600;
  color: var(--color-text-primary);
  background: var(--color-secondary);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.spec-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.spec-table.zebra tbody tr:nth-child(even) {
  background: var(--color-secondary);
}

/* Applications Grid */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.application-card {
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
}

.application-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  background: white;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.application-icon svg {
  width: 32px;
  height: 32px;
}

.application-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-sm);
}

.application-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

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

.document-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
}

.document-icon {
  width: 48px;
  height: 48px;
  background: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.document-icon svg {
  width: 24px;
  height: 24px;
}

.document-info {
  flex: 1;
}

.document-info h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 4px;
}

.document-meta {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin: 0;
}

/* Alternative and Matching Parts */
.alternative-parts {
  padding: var(--space-4xl) 0;
  background: white;
  border-top: 1px solid var(--color-border);
}

.alternative-parts__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.alternative-section h3,
.matching-section h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.alternative-desc,
.matching-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.alternative-list,
.matching-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.alternative-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  font-size: 14px;
}

.alternative-brand {
  font-weight: 600;
  color: var(--color-primary);
  min-width: 80px;
}

.alternative-part {
  font-weight: 500;
  color: var(--color-text-primary);
  flex: 1;
}

.alternative-specs {
  color: var(--color-text-tertiary);
  font-size: 13px;
}

.matching-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-md);
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
}

.matching-type {
  font-size: 12px;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.matching-part {
  font-weight: 600;
  color: var(--color-primary);
}

.matching-part a {
  color: var(--color-primary);
  text-decoration: none;
}

.matching-part a:hover {
  text-decoration: underline;
}

.matching-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* FAQ Section */
.product-faq {
  padding: var(--space-4xl) 0;
  background: var(--color-secondary);
}

.product-faq .section-title {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  max-width: 1100px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
}

.faq-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.faq-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* Related Products */
.related-products {
  padding: var(--space-4xl) 0;
  background: white;
}

.related-products .section-title {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.related-products__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.related-product-card {
  display: block;
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid var(--color-border);
}

.related-product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.related-product__series {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.related-product__name {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: var(--space-xs) 0;
}

.related-product__specs {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

/* CTA Section */
.cta-section {
  padding: var(--space-4xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, #005ba3 100%);
  color: white;
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: white;
}

.cta-content p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  color: white;
}

.cta-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-buttons .btn--accent {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.cta-buttons .btn--secondary {
  background: white;
  color: var(--color-primary);
  border-color: white;
}

.cta-buttons .btn--outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.5);
}

.cta-buttons .btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
}

/* Responsive */
@media (max-width: 1024px) {
  .product-hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .product-key-specs {
    grid-template-columns: repeat(2, 1fr);
  }

  .tab-content__grid {
    grid-template-columns: 1fr;
  }

  .tab-content__sidebar {
    flex-direction: row;
    gap: var(--space-md);
  }

  .info-card {
    flex: 1;
  }

  .applications-grid {
    grid-template-columns: 1fr;
  }

  .related-products__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .alternative-parts__grid {
    grid-template-columns: 1fr;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .product-title {
    font-size: 28px;
  }

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

  .product-key-specs {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    padding: var(--space-md);
  }

  .key-spec__value {
    font-size: 16px;
  }

  .tab-nav {
    flex-wrap: wrap;
  }

  .tab-nav__item {
    padding: var(--space-sm) var(--space-md);
    font-size: 14px;
  }

  .tab-content {
    padding: var(--space-md);
  }

  .tab-content__sidebar {
    flex-direction: column;
  }

  .spec-table-wrapper {
    margin: 0 calc(-1 * var(--space-md));
    padding: 0 var(--space-md);
  }

  .spec-table {
    font-size: 13px;
  }

  .spec-table th,
  .spec-table td {
    padding: var(--space-sm);
  }

  .document-item {
    flex-wrap: wrap;
  }

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

  .fae-review__header {
    flex-direction: column;
    text-align: center;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-buttons .btn {
    width: 100%;
    max-width: 300px;
  }
}