/* ============================================================
   Product Detail Page
   Rebuilt from svcshop01/product.html
   ============================================================ */

.single-product {
  overflow: visible;
}

.single-product .product-detail-page {
  background: var(--color-bg);
  padding-bottom: var(--space-12);
}

.single-product .product-top-section,
.single-product .product-content-section {
  background: transparent;
}

.single-product .product-top-section {
  padding: 0 0 var(--space-8);
}

.single-product .product-content-section {
  padding: 0 0 var(--space-12);
}

.single-product .product-detail-page,
.single-product #content,
.single-product .site-main,
.single-product .product-top-section,
.single-product .product-content-section,
.single-product .product-layout,
.single-product .product-main,
.single-product .product-sticky {
  overflow: visible;
}

.single-product .product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 48px;
  align-items: start;
}

.single-product .product-main {
  display: grid;
  gap: var(--space-8);
}

.single-product .product-main,
.single-product .product-sticky {
  min-width: 0;
  align-self: start;
}

.single-product .product-sticky {
  position: sticky;
  top: calc(var(--header-height, 68px) + 24px);
  z-index: 5;
}

.single-product .product-purchase-box,
.single-product .product-summary-card {
  position: relative;
  top: auto;
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.single-product .product-hero {
  background: transparent;
}

.single-product .product-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--space-4);
}

.single-product .product-title {
  margin: 0 0 var(--space-3);
  font-size: clamp(2rem, 2.8vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.single-product .product-subtitle {
  max-width: 760px;
  margin: 0 0 var(--space-5);
  font-size: 1.05rem;
  color: var(--color-text-secondary);
}

.single-product .product-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 var(--space-6);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.single-product .product-meta-bar .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.single-product .product-meta-bar .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  color: var(--color-accent);
  font-weight: 700;
}

.single-product .product-intro {
  display: grid;
  gap: 1rem;
  max-width: 860px;
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.9;
}

.single-product .product-intro p {
  margin: 0;
}

.single-product .product-content-stack {
  display: grid;
  gap: var(--space-10);
}

.single-product .product-section {
  margin: 0;
}

.single-product .product-section-title {
  display: inline-block;
  margin: 0 0 var(--space-5);
  padding-bottom: 14px;
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--color-primary);
  border-bottom: 3px solid var(--color-accent);
}

.single-product .delivery-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.single-product .delivery-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.single-product .delivery-item .icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

.single-product .delivery-item .text strong {
  display: block;
  margin-bottom: 2px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
}

.single-product .delivery-item .text span {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.single-product .audience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.single-product .audience-tag {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border: 1px solid rgba(26, 53, 88, 0.15);
  border-radius: var(--radius-md);
  background: rgba(26, 53, 88, 0.06);
  box-shadow: var(--shadow-sm);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.single-product .service-flow {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.single-product .flow-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.single-product .flow-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.single-product .flow-content strong {
  display: block;
  margin-bottom: 2px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
}

.single-product .flow-content span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.single-product .faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.single-product .faq-item {
  margin-bottom: var(--space-3);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: box-shadow var(--transition-fast);
}

.single-product .faq-item:hover {
  box-shadow: var(--shadow-sm);
}

.single-product .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  user-select: none;
  background: var(--color-surface);
  transition: background var(--transition-fast);
}

.single-product .faq-question:hover {
  background: rgba(26, 53, 88, 0.03);
}

.single-product .faq-question h4 {
  flex: 1;
  padding-right: var(--space-4);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

.single-product .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 700;
  transition: transform var(--transition-base), background var(--transition-fast), color var(--transition-fast);
}

.single-product .faq-item.is-open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
}

.single-product .faq-answer {
  display: none;
  padding: 0 var(--space-6) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

.single-product .faq-item.is-open .faq-answer {
  display: block;
}

.single-product .related-services {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.single-product .related-card {
  display: block;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.single-product .related-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.single-product .related-card .r-title {
  margin-bottom: 4px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
}

.single-product .related-card .r-price {
  font-size: var(--font-size-base);
  font-weight: 800;
  color: var(--color-accent);
}

.single-product .related-card p {
  margin-top: 6px;
  font-size: 11px;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.single-product .product-price-display {
  display: grid;
  gap: 8px;
  margin-bottom: var(--space-5);
}

.single-product .price-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.single-product .price-main {
  font-size: 2.5rem;
  line-height: 1;
  font-weight: 800;
  color: var(--color-accent);
}

.single-product .price-unit {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.single-product .price-origin {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.single-product .price-saving {
  color: var(--color-success);
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.single-product .summary-note {
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(20, 73, 124, 0.06);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.single-product .service-buy-form .form-group {
  margin-bottom: var(--space-4);
}

.single-product .form-label {
  display: block;
  margin-bottom: 10px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
}

.single-product .qty-selector {
  display: grid;
  grid-template-columns: 46px 1fr 46px;
  align-items: center;
  gap: 10px;
}

.single-product .qty-btn {
  width: 46px;
  height: 46px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1.2rem;
  font-weight: 700;
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.single-product .qty-btn:hover {
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.single-product .qty-input {
  width: 100%;
  height: 46px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
}

.single-product .product-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: var(--space-5);
}

.single-product .product-guarantee {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.single-product .guarantee-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.single-product .guarantee-item .icon {
  color: var(--color-success);
  font-size: 1rem;
  font-weight: 700;
}

.single-product .package-points {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.single-product .package-points-title {
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.single-product .package-points ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.single-product .package-points li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 1.6;
}

.single-product .package-points li::before {
  content: "\2713";
  flex-shrink: 0;
  color: var(--color-success);
  font-weight: 700;
}

.single-product .contact-quick {
  margin-top: var(--space-6);
  padding: 16px;
  border-radius: 12px;
  background: var(--color-bg);
  text-align: center;
}

.single-product .contact-quick-label {
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.single-product .contact-quick-phone {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
}

.single-product .contact-quick-time {
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .single-product .product-layout {
    grid-template-columns: 1fr;
  }

  .single-product .product-sticky {
    position: static;
    top: auto;
  }

  .single-product .delivery-list,
  .single-product .related-services {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .single-product .product-top-section {
    padding-bottom: var(--space-6);
  }

  .single-product .product-title {
    font-size: clamp(1.8rem, 9vw, 2.35rem);
  }

  .single-product .product-meta-bar {
    gap: 10px;
  }

  .single-product .product-meta-bar .meta-item {
    width: 100%;
    justify-content: flex-start;
  }

  .single-product .delivery-list,
  .single-product .related-services,
  .single-product .product-guarantee {
    grid-template-columns: 1fr;
  }

  .single-product .faq-question {
    padding: var(--space-4) var(--space-5);
  }

  .single-product .faq-answer {
    padding: 0 var(--space-5) var(--space-4);
  }
}