/*
 * Solarichi WooCommerce — Single product page, tabs, reviews, related products and mobile sticky bar
 * Auto-split from the original monolithic woocommerce.css in Phase 8.
 * Keep visual changes in the relevant module to avoid loading store CSS everywhere.
 */

/* ─── Single Product Hero ─── */
.md3-single-wrapper {
  position: relative;
}

.md3-single-wrapper::before {
  content: '';
  position: absolute;
  top: -60px;
  left: -120px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.07) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.md3-single-wrapper::after {
  content: '';
  position: absolute;
  bottom: 200px;
  right: -100px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.md3-product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: flex-start;
  margin-top: 24px;
  position: relative;
  z-index: 1;
}

.md3-product-gallery {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.md3-product-gallery .woocommerce-product-gallery {
  border-radius: var(--md3-radius-md);
  overflow: hidden;
  box-shadow: var(--md3-elevation-2);
  position: relative;
}

.md3-product-gallery .woocommerce-product-gallery::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--md3-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  pointer-events: none;
  z-index: 1;
}

.md3-product-gallery .woocommerce-product-gallery:hover {
  box-shadow: var(--md3-elevation-3), var(--md3-glow-primary);
}

.md3-product-gallery .woocommerce-product-gallery__trigger {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--md3-elevation-2);
  transition: all var(--md3-transition);
  text-indent: -9999px;
  overflow: hidden;
}

.md3-product-gallery .woocommerce-product-gallery__trigger::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--md3-on-surface);
  border-radius: 50%;
  top: 10px;
  left: 10px;
}

.md3-product-gallery .woocommerce-product-gallery__trigger::after {
  content: '';
  position: absolute;
  width: 2px;
  height: 8px;
  background: var(--md3-on-surface);
  bottom: 10px;
  right: 10px;
  transform: rotate(-45deg);
}

.md3-product-gallery .woocommerce-product-gallery__trigger:hover {
  background: var(--md3-primary);
  border-color: var(--md3-primary);
  box-shadow: var(--md3-elevation-3), var(--md3-glow-primary);
  transform: scale(1.1);
}

.md3-product-gallery .woocommerce-product-gallery__trigger:hover::before,
.md3-product-gallery .woocommerce-product-gallery__trigger:hover::after {
  border-color: white;
  background: white;
}

.md3-product-gallery .flex-control-thumbs {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  justify-content: center;
}

.md3-product-gallery .flex-control-thumbs li {
  width: 64px !important;
  height: 64px;
  list-style: none;
}

.md3-product-gallery .flex-control-thumbs li img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--md3-radius-xs);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--md3-transition);
}

.md3-product-gallery .flex-control-thumbs li img.flex-active {
  border-color: var(--md3-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--md3-primary) 20%, transparent), var(--md3-glow-primary);
}

.md3-product-gallery .flex-control-thumbs li img:hover {
  border-color: var(--md3-primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--md3-primary) 15%, transparent);
}

.md3-product-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.md3-pi-brand {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--md3-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-primary) 8%, transparent), color-mix(in srgb, var(--md3-secondary) 4%, transparent));
  border-radius: var(--md3-radius-full);
  border: 1px solid color-mix(in srgb, var(--md3-primary) 10%, transparent);
  width: fit-content;
  animation: md3BrandIn 0.5s ease-out;
}

@keyframes md3BrandIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.md3-product-info .product_title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--md3-on-surface);
  margin: 0;
  line-height: 1.3;
  background: linear-gradient(135deg, var(--md3-on-surface) 60%, var(--md3-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.md3-pi-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.md3-pi-cats a {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--md3-on-surface-variant);
  text-decoration: none;
  padding: 3px 12px;
  border-radius: var(--md3-radius-xs);
  background: color-mix(in srgb, var(--md3-primary) 8%, transparent);
  transition: background var(--md3-transition);
}

.md3-pi-cats a:hover {
  background: color-mix(in srgb, var(--md3-primary) 15%, transparent);
  color: var(--md3-primary);
}

.md3-pi-rating-stock {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.md3-pi-rating {
  display: flex;
  align-items: center;
  gap: 8px;
}

.md3-pi-rating-text {
  font-size: 0.8125rem;
  color: var(--md3-on-surface-variant);
}

.md3-pi-stock {
  font-size: 0.8125rem;
  font-weight: 600;
}

.md3-pi-excerpt {
  font-size: 0.875rem;
  color: var(--md3-on-surface-variant);
  line-height: 1.8;
}

.md3-pi-excerpt p {
  margin: 0 0 8px;
}

/* ─── Quick Specs Section ─── */
.md3-qs-section {
  margin-top: 24px;
}

.md3-qs-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--md3-on-surface);
  margin-bottom: 14px;
  position: relative;
  padding-right: 14px;
}

.md3-qs-title::before {
  content: '';
  position: absolute;
  right: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--md3-primary);
  border-radius: 2px;
}

.md3-qs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
}

.md3-qs-card {
  padding: 16px 12px;
  background: linear-gradient(135deg, var(--md3-surface), color-mix(in srgb, var(--md3-primary) 3%, var(--md3-surface)));
  border-radius: var(--md3-radius-sm);
  box-shadow: var(--md3-elevation-1);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all var(--md3-transition-spring);
  border: 1px solid color-mix(in srgb, var(--md3-primary) 12%, transparent);
  position: relative;
  overflow: hidden;
  animation: md3QsCardIn 0.5s ease-out both;
}

.md3-qs-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--md3-gradient-primary);
  opacity: 0;
  transition: opacity var(--md3-transition);
}

.md3-qs-card:nth-child(4n)::before {
  background: var(--md3-gradient-warm);
}

.md3-qs-card:nth-child(3n)::before {
  background: var(--md3-gradient-cool);
}

.md3-qs-card:nth-child(5n)::before {
  background: var(--md3-gradient-sunset);
}

.md3-qs-card:hover {
  box-shadow: var(--md3-elevation-3), var(--md3-glow-primary);
  transform: translateY(-4px);
}

.md3-qs-card:hover::before {
  opacity: 1;
  height: 3px;
}

@keyframes md3QsCardIn {
  from { opacity: 0; transform: translateY(16px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.md3-qs-card:nth-child(1) { animation-delay: 0ms; }
.md3-qs-card:nth-child(2) { animation-delay: 60ms; }
.md3-qs-card:nth-child(3) { animation-delay: 120ms; }
.md3-qs-card:nth-child(4) { animation-delay: 180ms; }
.md3-qs-card:nth-child(5) { animation-delay: 240ms; }
.md3-qs-card:nth-child(6) { animation-delay: 300ms; }
.md3-qs-card:nth-child(7) { animation-delay: 360ms; }
.md3-qs-card:nth-child(8) { animation-delay: 420ms; }

.md3-qs-card:nth-child(4n) {
  border-color: color-mix(in srgb, var(--md3-tertiary) 14%, transparent);
  background: linear-gradient(135deg, var(--md3-surface), color-mix(in srgb, var(--md3-tertiary) 4%, var(--md3-surface)));
}

.md3-qs-card:nth-child(4n) .md3-qs-val {
  color: var(--md3-tertiary);
}

.md3-qs-card:nth-child(3n) {
  border-color: color-mix(in srgb, var(--md3-secondary) 14%, transparent);
  background: linear-gradient(135deg, var(--md3-surface), color-mix(in srgb, var(--md3-secondary) 4%, var(--md3-surface)));
}

.md3-qs-card:nth-child(3n) .md3-qs-val {
  color: var(--md3-secondary);
}

.md3-qs-val {
  font-size: 1rem;
  font-weight: 800;
  color: var(--md3-primary);
  direction: ltr;
  line-height: 1.3;
}

.md3-qs-lbl {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--md3-on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ─── Quick Spec Chips ─── */
.md3-pi-spec-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.md3-pi-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px 6px 16px;
  background: var(--md3-surface);
  border-radius: 999px;
  box-shadow: var(--md3-elevation-1);
  border: 1px solid color-mix(in srgb, var(--md3-primary) 14%, transparent);
  transition: box-shadow var(--md3-transition), transform var(--md3-transition), border-color var(--md3-transition);
  font-size: 0.8125rem;
  direction: ltr;
}

.md3-pi-chip:hover {
  box-shadow: var(--md3-elevation-2);
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--md3-primary) 25%, transparent);
}

.md3-pi-chip-lbl {
  font-weight: 500;
  color: var(--md3-on-surface-variant);
  font-size: 0.75rem;
  direction: rtl;
}

.md3-pi-chip-val {
  font-weight: 700;
  color: var(--md3-primary);
  font-size: 0.8125rem;
}

/* ─── Single Product Actions ─── */
.md3-pi-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
  background: var(--md3-surface);
  border-radius: var(--md3-radius-md);
  padding: 20px;
  box-shadow: var(--md3-elevation-1);
  border: 1px solid var(--md3-outline-variant);
}

.md3-pi-actions-main {
  display: flex;
  align-items: center;
  gap: 16px;
}

.md3-pi-price-wrap {
  flex-shrink: 0;
}

.md3-pi-price-wrap .price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--md3-primary);
  margin: 0;
  white-space: nowrap;
  position: relative;
  display: inline-block;
}

.md3-pi-price-wrap .price .woocommerce-Price-amount {
  background: linear-gradient(135deg, var(--md3-primary), var(--md3-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.md3-pi-price-wrap .price .woocommerce-Price-currencySymbol {
  -webkit-text-fill-color: var(--md3-secondary);
  font-size: 0.85rem;
}

.md3-pi-price-wrap .price del {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--md3-on-surface-variant);
}

.md3-pi-price-wrap .price del .woocommerce-Price-amount {
  background: none;
  -webkit-text-fill-color: var(--md3-on-surface-variant);
}

.md3-pi-price-wrap .price ins {
  text-decoration: none;
}

.md3-pi-cart-wrap {
  flex: 1;
}

.md3-pi-cart-wrap .cart {
  display: flex;
  gap: 10px;
  align-items: stretch;
  margin: 0;
}

.md3-pi-cart-wrap .quantity {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--md3-outline-variant);
  border-radius: var(--md3-radius-xs);
  overflow: hidden;
  flex-shrink: 0;
}

.md3-pi-cart-wrap .quantity .qty {
  width: 48px;
  height: 44px;
  border: none;
  text-align: center;
  font-family: var(--md3-font);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--md3-on-surface);
  background: none;
  -moz-appearance: textfield;
}

.md3-pi-cart-wrap .quantity .qty::-webkit-outer-spin-button,
.md3-pi-cart-wrap .quantity .qty::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.md3-pi-cart-wrap .single_add_to_cart_button {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  border-radius: var(--md3-radius-sm);
  background: var(--md3-gradient-primary);
  color: var(--md3-on-primary);
  cursor: pointer;
  font-family: var(--md3-font);
  transition: box-shadow var(--md3-transition), transform var(--md3-transition), background var(--md3-transition);
  box-shadow: var(--md3-elevation-1), var(--md3-glow-primary);
  height: 44px;
  position: relative;
  overflow: hidden;
}

.md3-pi-cart-wrap .single_add_to_cart_button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--md3-shimmer);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  pointer-events: none;
}

.md3-pi-cart-wrap .single_add_to_cart_button:hover::before {
  transform: translateX(100%);
}

.md3-pi-cart-wrap .single_add_to_cart_button:hover {
  box-shadow: var(--md3-elevation-3), var(--md3-glow-primary);
  transform: translateY(-2px) scale(1.02);
}

.md3-pi-cart-wrap .single_add_to_cart_button:active {
  transform: translateY(0) scale(0.98);
}

.md3-pi-cart-wrap .single_add_to_cart_button.loading {
  opacity: 0.85;
  pointer-events: none;
}

.md3-pi-cart-wrap .single_add_to_cart_button.loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--md3-on-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: md3Spin 0.6s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

@keyframes md3Spin {
  to { transform: rotate(360deg); }
}

.md3-pi-cart-wrap .added_to_cart.wc-forward {
  display: none;
}

/* Secondary action buttons */
.md3-pi-actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.md3-pi-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  font-family: var(--md3-font);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--md3-radius-sm);
  cursor: pointer;
  transition: all var(--md3-transition-spring);
  text-decoration: none;
  border: 1px solid var(--md3-outline);
  background: transparent;
  color: var(--md3-on-surface-variant);
  position: relative;
  overflow: hidden;
}

.md3-pi-action-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--md3-gradient-primary);
  opacity: 0;
  transition: opacity var(--md3-transition);
  border-radius: inherit;
}

.md3-pi-action-btn:hover {
  border-color: var(--md3-primary);
  color: var(--md3-primary);
  background: color-mix(in srgb, var(--md3-primary) 6%, transparent);
  transform: translateY(-1px);
  box-shadow: var(--md3-elevation-1);
}

.md3-pi-action-btn.active {
  border-color: var(--md3-primary);
  color: var(--md3-on-primary);
  background: var(--md3-gradient-primary);
  box-shadow: var(--md3-elevation-1), var(--md3-glow-primary);
}

.md3-pi-action-btn.active svg {
  filter: drop-shadow(0 0 2px rgba(255,255,255,0.5));
}

.md3-pi-action-btn.loading {
  opacity: 0.6;
  pointer-events: none;
  animation: md3Pulse 1s ease-in-out infinite;
}

@keyframes md3Pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.md3-pi-action-btn svg {
  flex-shrink: 0;
  transition: transform var(--md3-transition-spring);
}

.md3-pi-action-btn:hover svg {
  transform: scale(1.15);
}

.md3-pi-action-btn.pop {
  animation: md3Pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes md3Pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.15); }
  70% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

.md3-pi-actions-row .btn-pre-invoice {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--md3-radius-sm);
  font-family: var(--md3-font);
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid var(--md3-outline);
  background: transparent;
  color: var(--md3-on-surface-variant);
  cursor: pointer;
  transition: all var(--md3-transition-spring);
  position: relative;
  overflow: hidden;
}

.md3-pi-actions-row .btn-pre-invoice:hover {
  border-color: var(--md3-secondary);
  color: var(--md3-secondary);
  background: color-mix(in srgb, var(--md3-secondary) 6%, transparent);
  transform: translateY(-1px);
  box-shadow: var(--md3-elevation-1);
}

/* SKU */
.md3-pi-sku {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--md3-outline-variant);
  font-size: 0.8125rem;
}

.md3-pi-sku-label {
  color: var(--md3-on-surface-variant);
  font-weight: 500;
}

.md3-pi-sku-value {
  color: var(--md3-on-surface);
  direction: ltr;
}

/* Variation support */
.md3-pi-cart-wrap .woocommerce-variation-add-to-cart {
  display: flex;
  gap: 10px;
  align-items: stretch;
  margin-top: 4px;
}

.md3-pi-cart-wrap .woocommerce-variation-add-to-cart .quantity {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--md3-outline-variant);
  border-radius: var(--md3-radius-xs);
  overflow: hidden;
  flex-shrink: 0;
}

.md3-pi-cart-wrap .woocommerce-variation-add-to-cart .quantity .qty {
  width: 48px;
  height: 44px;
  border: none;
  text-align: center;
  font-family: var(--md3-font);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--md3-on-surface);
  background: none;
  -moz-appearance: textfield;
}

/* ─── Brand Section ─── */
.md3-brand-section {
  margin-top: 32px;
}

.md3-brand-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--md3-surface), color-mix(in srgb, var(--md3-primary) 4%, var(--md3-surface)));
  border-radius: var(--md3-radius-md);
  box-shadow: var(--md3-elevation-1);
  border: 1px solid color-mix(in srgb, var(--md3-primary) 12%, transparent);
  transition: all var(--md3-transition);
  position: relative;
  overflow: hidden;
}

.md3-brand-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 100%;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--md3-primary) 4%, transparent));
  pointer-events: none;
}

.md3-brand-card:hover {
  box-shadow: var(--md3-elevation-3), var(--md3-glow-primary);
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--md3-primary) 25%, transparent);
}

.md3-brand-logo {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  object-fit: contain;
  flex-shrink: 0;
}

.md3-brand-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.md3-brand-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--md3-on-surface);
}

.md3-brand-desc {
  font-size: 0.8125rem;
  color: var(--md3-on-surface-variant);
  margin: 0;
  line-height: 1.5;
}

.md3-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--md3-radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--md3-primary);
  text-decoration: none;
  background: color-mix(in srgb, var(--md3-primary) 8%, transparent);
  transition: background var(--md3-transition);
  flex-shrink: 0;
}

.md3-brand-link:hover {
  background: color-mix(in srgb, var(--md3-primary) 15%, transparent);
}



/* ─── Tabs ─── */
.md3-single-tabs {
  margin-top: 48px;
  background: var(--md3-surface);
  border-radius: var(--md3-radius-md);
  box-shadow: var(--md3-elevation-1);
  overflow: hidden;
  border: 1px solid var(--md3-outline-variant);
}

.md3-tabs-nav {
  display: flex;
  position: relative;
  border-bottom: 1px solid var(--md3-outline-variant);
  background: var(--md3-surface);
  overflow-x: auto;
  scrollbar-width: none;
}

.md3-tabs-nav::-webkit-scrollbar {
  display: none;
}

.md3-tab {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 16px 24px;
  border: none;
  background: none;
  font-family: var(--md3-font);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md3-on-surface-variant);
  cursor: pointer;
  transition: color var(--md3-transition);
  white-space: nowrap;
  position: relative;
}

.md3-tab:hover {
  color: var(--md3-primary);
  background: color-mix(in srgb, var(--md3-primary) 4%, transparent);
}

.md3-tab.active {
  color: var(--md3-primary);
  background: linear-gradient(180deg, color-mix(in srgb, var(--md3-primary) 8%, transparent) 0%, transparent 100%);
}

.md3-tab.active .md3-tab-count {
  background: var(--md3-primary);
  color: var(--md3-on-primary);
}

.md3-tab-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 50px;
  background: var(--md3-primary-container);
  color: var(--md3-on-primary-container);
  font-size: 0.6875rem;
  font-weight: 700;
}

.md3-tabs-indicator {
  position: absolute;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--md3-primary), var(--md3-tertiary), var(--md3-secondary));
  border-radius: 3px 3px 0 0;
  transition: left 300ms cubic-bezier(0.4,0,0.2,1), width 300ms cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 -1px 8px rgba(13, 148, 136, 0.3);
}

.md3-tabs-content {
  padding: 32px;
}

.md3-tab-panel {
  display: none;
  animation: md3TabFadeIn 300ms ease-out;
}

.md3-tab-panel.active {
  display: block;
}

@keyframes md3TabFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Description Tab ─── */
.md3-description-content {
  line-height: 2;
  color: var(--md3-on-surface-variant);
  font-size: 0.9375rem;
}

.md3-description-content p {
  margin-bottom: 16px;
}

.md3-description-content h2,
.md3-description-content h3,
.md3-description-content h4 {
  color: var(--md3-on-surface);
  margin-top: 32px;
  margin-bottom: 12px;
  font-weight: 700;
}

.md3-description-content h2 { font-size: 1.25rem; }
.md3-description-content h3 { font-size: 1.1rem; }
.md3-description-content h4 { font-size: 1rem; }

.md3-description-content ul,
.md3-description-content ol {
  padding-right: 24px;
  margin-bottom: 16px;
}

.md3-description-content li {
  margin-bottom: 8px;
}

.md3-description-content img {
  border-radius: var(--md3-radius-xs);
  max-width: 100%;
  height: auto;
  margin: 16px 0;
}

.md3-description-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.875rem;
}

.md3-description-content table th,
.md3-description-content table td {
  padding: 10px 14px;
  border: 1px solid var(--md3-outline-variant);
  text-align: right;
}

.md3-description-content table th {
  background: var(--md3-surface-variant);
  font-weight: 600;
}

.md3-description-content blockquote {
  border-right: 4px solid var(--md3-primary);
  margin: 16px 0;
  padding: 12px 20px;
  background: color-mix(in srgb, var(--md3-primary) 6%, transparent);
  border-radius: 0 var(--md3-radius-xs) var(--md3-radius-xs) 0;
  color: var(--md3-on-surface);
}

.md3-tab-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--md3-on-surface-variant);
}

/* ─── Categorized Specs ─── */
.md3-specs-groups {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.md3-spec-group {
  background: var(--md3-surface);
  border-radius: var(--md3-radius-sm);
  overflow: hidden;
  border: 1px solid var(--md3-outline-variant);
  border-top: 3px solid var(--md3-primary);
  transition: box-shadow var(--md3-transition), transform var(--md3-transition);
  animation: md3SpecGroupIn 0.4s ease-out both;
}

.md3-spec-group:nth-child(1) { animation-delay: 0ms; }
.md3-spec-group:nth-child(2) { animation-delay: 80ms; }
.md3-spec-group:nth-child(3) { animation-delay: 160ms; }
.md3-spec-group:nth-child(4) { animation-delay: 240ms; }

@keyframes md3SpecGroupIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.md3-spec-group:hover {
  box-shadow: var(--md3-elevation-2);
  transform: translateY(-2px);
}

.md3-spec-group:nth-child(even) {
  border-top-color: var(--md3-tertiary);
}

.md3-spec-group:nth-child(3n) {
  border-top-color: var(--md3-secondary);
}

.md3-spec-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-primary) 6%, var(--md3-surface)), color-mix(in srgb, var(--md3-primary) 2%, var(--md3-surface)));
  border-bottom: 1px solid var(--md3-outline-variant);
}

.md3-spec-group:nth-child(even) .md3-spec-group-header {
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-tertiary) 6%, var(--md3-surface)), color-mix(in srgb, var(--md3-tertiary) 2%, var(--md3-surface)));
}

.md3-spec-group:nth-child(3n) .md3-spec-group-header {
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-secondary) 6%, var(--md3-surface)), color-mix(in srgb, var(--md3-secondary) 2%, var(--md3-surface)));
}

.md3-spec-group-header h3 {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--md3-on-surface);
}

.md3-spec-group-items {
  padding: 4px 0;
}

.md3-spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(0,0,0,0.04);
  gap: 12px;
}

.md3-spec-row:last-child {
  border-bottom: none;
}

.md3-spec-row-label {
  font-size: 0.8125rem;
  color: var(--md3-on-surface-variant);
  font-weight: 500;
  flex-shrink: 0;
}

.md3-spec-row-val {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md3-on-surface);
  text-align: left;
  direction: ltr;
}

/* ─── Downloads Tab ─── */
.md3-downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.md3-dl-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--md3-surface);
  border-radius: var(--md3-radius-sm);
  border: 1px solid var(--md3-outline-variant);
  transition: all var(--md3-transition-spring);
  animation: md3DlCardIn 0.4s ease-out both;
}

.md3-dl-card:nth-child(1) { animation-delay: 0ms; }
.md3-dl-card:nth-child(2) { animation-delay: 80ms; }
.md3-dl-card:nth-child(3) { animation-delay: 160ms; }

@keyframes md3DlCardIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.md3-dl-card:hover {
  box-shadow: var(--md3-elevation-2), var(--md3-glow-primary);
  border-color: color-mix(in srgb, var(--md3-primary) 30%, var(--md3-outline-variant));
  transform: translateY(-2px);
}

.md3-dl-card--datasheet {
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-primary) 4%, var(--md3-surface)), color-mix(in srgb, var(--md3-secondary) 3%, var(--md3-surface)));
  border-color: color-mix(in srgb, var(--md3-primary) 20%, var(--md3-outline-variant));
  position: relative;
}

.md3-dl-card--datasheet::after {
  content: 'دیتاشیت رسمی';
  position: absolute;
  top: -8px;
  right: 16px;
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--md3-primary);
  background: var(--md3-surface);
  padding: 1px 10px;
  border-radius: 20px;
  border: 1px solid color-mix(in srgb, var(--md3-primary) 20%, transparent);
  letter-spacing: 0.3px;
}

.md3-dl-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.md3-dl-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.md3-dl-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md3-on-surface);
}

.md3-dl-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--md3-on-surface-variant);
}

.md3-dl-ext {
  font-weight: 600;
  text-transform: uppercase;
}

.md3-dl-sep {
  color: var(--md3-outline);
}

.md3-dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--md3-radius-sm);
  text-decoration: none;
  background: var(--md3-primary);
  color: var(--md3-on-primary);
  flex-shrink: 0;
  transition: box-shadow var(--md3-transition), transform var(--md3-transition);
  box-shadow: var(--md3-elevation-1);
}

.md3-dl-btn:hover {
  box-shadow: var(--md3-elevation-2);
  transform: translateY(-2px);
  color: var(--md3-on-primary);
}

/* ─── Reviews Tab ─── */
#panel-reviews #reviews {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

#panel-reviews #comments {
  width: 100%;
}

#panel-reviews .woocommerce-Reviews-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--md3-on-surface);
  margin-bottom: 16px;
}

#panel-reviews .commentlist {
  list-style: none;
  padding: 0;
  margin: 0;
}

#panel-reviews .commentlist li {
  padding: 16px 0;
  border-bottom: 1px solid var(--md3-outline-variant);
}

#panel-reviews .commentlist li:last-child {
  border-bottom: none;
}

#panel-reviews .commentlist .star-rating {
  font-size: 0.8125rem;
  color: var(--md3-secondary);
  float: left;
}

#panel-reviews .commentlist .meta {
  font-size: 0.8125rem;
  color: var(--md3-on-surface-variant);
  margin-bottom: 8px;
}

#panel-reviews .commentlist .description {
  font-size: 0.875rem;
  color: var(--md3-on-surface);
  line-height: 1.8;
}

#panel-reviews .commentlist .description p {
  margin: 0;
}

/* Review form */
#panel-reviews .comment-respond {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--md3-outline-variant);
}

#panel-reviews .comment-reply-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--md3-on-surface);
  margin-bottom: 16px;
  display: block;
}

#panel-reviews .comment-form {
  display: grid;
  gap: 14px;
}

#panel-reviews .comment-form label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--md3-on-surface-variant);
  margin-bottom: 4px;
}

#panel-reviews .comment-form input[type="text"],
#panel-reviews .comment-form input[type="email"],
#panel-reviews .comment-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--md3-outline-variant);
  border-radius: var(--md3-radius-xs);
  font-family: var(--md3-font);
  font-size: 0.875rem;
  color: var(--md3-on-surface);
  background: var(--md3-surface);
  transition: border-color var(--md3-transition), box-shadow var(--md3-transition);
  box-sizing: border-box;
}

#panel-reviews .comment-form input:focus,
#panel-reviews .comment-form textarea:focus {
  outline: none;
  border-color: var(--md3-primary);
  box-shadow: 0 0 0 3px rgba(13,148,136,0.1);
}

#panel-reviews .comment-form .comment-form-rating {
  display: flex;
  align-items: center;
  gap: 10px;
}

#panel-reviews .comment-form .stars {
  margin: 0;
}

#panel-reviews .comment-form .submit {
  padding: 10px 28px;
  border: none;
  border-radius: var(--md3-radius-sm);
  background: var(--md3-primary);
  color: var(--md3-on-primary);
  font-family: var(--md3-font);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: box-shadow var(--md3-transition), transform var(--md3-transition);
  box-shadow: var(--md3-elevation-1);
}

#panel-reviews .comment-form .submit:hover {
  box-shadow: 0 5px 20px rgba(13,148,136,0.35);
  transform: translateY(-2px);
}

/* ─── Variable Product Add-to-Cart ─── */
.md3-pi-actions .variations_form {
  flex-direction: column;
  width: 100%;
}

.md3-pi-actions .variations {
  border: none;
  margin-bottom: 12px;
}

.md3-pi-actions .variations tr {
  display: flex;
  flex-direction: column;
  margin-bottom: 12px;
}

.md3-pi-actions .variations td {
  display: block;
  padding: 0;
  border: none;
}

.md3-pi-actions .variations td.label {
  margin-bottom: 6px;
}

.md3-pi-actions .variations td.label label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--md3-on-surface-variant);
}

.md3-pi-actions .variations select {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1.5px solid var(--md3-outline-variant);
  border-radius: var(--md3-radius-xs);
  font-family: var(--md3-font);
  font-size: 0.9rem;
  color: var(--md3-on-surface);
  background: var(--md3-surface);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2342474e' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 12px center;
  padding-left: 36px;
  cursor: pointer;
  transition: border-color var(--md3-transition), box-shadow var(--md3-transition);
}

.md3-pi-actions .variations select:focus {
  outline: none;
  border-color: var(--md3-primary);
  box-shadow: 0 0 0 3px rgba(13,148,136,0.1);
}

.md3-pi-actions .variations .reset_variations {
  font-size: 0.8125rem;
  color: var(--md3-primary);
  text-decoration: none;
  margin-top: 8px;
  display: inline-block;
}

.md3-pi-cart-wrap .single_variation_wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.md3-pi-cart-wrap .woocommerce-variation.single_variation {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.md3-pi-cart-wrap .woocommerce-variation-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--md3-primary);
}

.md3-pi-cart-wrap .woocommerce-variation-availability {
  margin: 0;
}

/* ─── Trust Section ─── */
.md3-trust-section {
  margin-top: 48px;
}

.md3-trust-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--md3-on-surface);
  margin-bottom: 20px;
  text-align: center;
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
}

.md3-trust-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--md3-tertiary);
  border-radius: 2px;
}

.md3-trust-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.md3-trust-card {
  padding: 28px 20px;
  background: var(--md3-surface);
  border-radius: var(--md3-radius-md);
  box-shadow: var(--md3-elevation-1);
  text-align: center;
  transition: all var(--md3-transition);
  border: 1px solid var(--md3-outline-variant);
  position: relative;
  overflow: hidden;
}

.md3-trust-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--md3-gradient-primary);
  opacity: 0;
  transition: opacity var(--md3-transition);
}

.md3-trust-card:nth-child(even)::before {
  background: var(--md3-gradient-warm);
}

.md3-trust-card:nth-child(3n)::before {
  background: var(--md3-gradient-cool);
}

.md3-trust-card:hover {
  box-shadow: var(--md3-elevation-3);
  transform: translateY(-4px);
}

.md3-trust-card:hover::before {
  opacity: 1;
}

.md3-trust-icon-wrap {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-primary) 12%, transparent), color-mix(in srgb, var(--md3-primary) 4%, transparent));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--md3-transition);
  color: var(--md3-primary);
}

.md3-trust-card:nth-child(even) .md3-trust-icon-wrap {
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-tertiary) 12%, transparent), color-mix(in srgb, var(--md3-tertiary) 4%, transparent));
  color: var(--md3-tertiary);
}

.md3-trust-card:nth-child(3n) .md3-trust-icon-wrap {
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-secondary) 12%, transparent), color-mix(in srgb, var(--md3-secondary) 4%, transparent));
  color: var(--md3-secondary);
}

.md3-trust-card:hover .md3-trust-icon-wrap {
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.2);
}

.md3-trust-card:nth-child(even):hover .md3-trust-icon-wrap {
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.2);
}

.md3-trust-card:nth-child(3n):hover .md3-trust-icon-wrap {
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.md3-trust-card h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--md3-on-surface);
  margin-bottom: 6px;
  transition: color var(--md3-transition);
}

.md3-trust-card:hover h4 {
  color: var(--md3-primary);
}

.md3-trust-card:nth-child(even):hover h4 {
  color: var(--md3-tertiary);
}

.md3-trust-card:nth-child(3n):hover h4 {
  color: var(--md3-secondary);
}

.md3-trust-card p {
  font-size: 0.75rem;
  color: var(--md3-on-surface-variant);
  line-height: 1.6;
  margin: 0;
}

/* ─── FAQ Section ─── */
.md3-faq-section {
  margin-top: 48px;
}

.md3-faq-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--md3-on-surface);
  margin-bottom: 20px;
  position: relative;
  padding-right: 16px;
}

.md3-faq-title::before {
  content: '';
  position: absolute;
  right: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--md3-secondary);
  border-radius: 2px;
}

.md3-faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.md3-faq-item {
  background: var(--md3-surface);
  border-radius: var(--md3-radius-xs);
  overflow: hidden;
  border: 1px solid var(--md3-outline-variant);
  transition: box-shadow var(--md3-transition);
}

.md3-faq-item:hover {
  box-shadow: var(--md3-elevation-1);
}

.md3-faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 16px 20px;
  border: none;
  background: none;
  font-family: var(--md3-font);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--md3-on-surface);
  cursor: pointer;
  text-align: right;
  transition: color var(--md3-transition), background var(--md3-transition);
}

.md3-faq-question:hover {
  background: linear-gradient(135deg, color-mix(in srgb, var(--md3-secondary) 6%, transparent), color-mix(in srgb, var(--md3-primary) 3%, transparent));
}

.md3-faq-question[aria-expanded="true"] {
  color: var(--md3-secondary);
  border-bottom: 1px solid color-mix(in srgb, var(--md3-secondary) 10%, transparent);
}

.md3-faq-question svg {
  flex-shrink: 0;
  transition: transform 300ms cubic-bezier(0.4,0,0.2,1);
  color: var(--md3-on-surface-variant);
}

.md3-faq-question[aria-expanded="true"] svg {
  transform: rotate(180deg);
  color: var(--md3-secondary);
}

.md3-faq-answer {
  display: none;
  padding: 0 20px 16px;
  font-size: 0.875rem;
  color: var(--md3-on-surface-variant);
  line-height: 1.8;
}

.md3-faq-answer.open {
  display: block;
  animation: md3FaqOpen 300ms ease-out;
}

@keyframes md3FaqOpen {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.md3-faq-answer p {
  margin: 8px 0;
}

/* ─── CTA Section ─── */
.md3-cta-section {
  margin-top: 48px;
  position: relative;
  overflow: hidden;
  border-radius: var(--md3-radius-md);
  background: linear-gradient(135deg, var(--md3-primary), var(--md3-tertiary), var(--md3-secondary));
  background-size: 200% 200%;
  animation: md3CtaGradient 8s ease infinite;
  padding: 48px 40px;
}

@keyframes md3CtaGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.md3-cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: md3CtaOrb 12s ease-in-out infinite alternate;
}

.md3-cta-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: md3CtaOrb 10s ease-in-out infinite alternate-reverse;
}

@keyframes md3CtaOrb {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, -20px) scale(1.1); }
}

.md3-cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 650px;
  margin: 0 auto;
}

.md3-cta-heading {
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
  line-height: 1.4;
}

.md3-cta-desc {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  line-height: 1.7;
}

.md3-cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.md3-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: var(--md3-radius-sm);
  text-decoration: none;
  transition: all var(--md3-transition);
  cursor: pointer;
  font-family: var(--md3-font);
}

.md3-cta-btn-outline {
  border: 2px solid rgba(255,255,255,0.6);
  color: white;
  background: transparent;
}

.md3-cta-btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
  color: white;
  transform: translateY(-2px);
}

.md3-cta-buttons .btn-pre-invoice {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: var(--md3-radius-sm);
  border: none;
  background: var(--md3-on-primary);
  color: var(--md3-primary);
  cursor: pointer;
  font-family: var(--md3-font);
  transition: all var(--md3-transition);
  box-shadow: var(--md3-elevation-2);
}

.md3-cta-buttons .btn-pre-invoice:hover {
  transform: translateY(-2px);
  box-shadow: var(--md3-elevation-3);
}

/* ─── Related Products ─── */
.md3-related-section {
  margin-top: 48px;
  position: relative;
}

.md3-related-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--md3-on-surface);
  margin-bottom: 20px;
  position: relative;
  padding-right: 16px;
  display: inline-block;
}

.md3-related-title::before {
  content: '';
  position: absolute;
  right: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--md3-gradient-primary);
  border-radius: 2px;
  box-shadow: 0 0 6px rgba(13, 148, 136, 0.4);
}

.md3-related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.md3-related-grid .md3-product-card {
  animation: none;
}

/* ─── On-sale badge ─── */
.md3-product-gallery .onsale {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  padding: 4px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--md3-radius-xs);
  background: var(--md3-error);
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  box-shadow: var(--md3-elevation-1);
}

/* ─── Responsive Single Product ─── */
@media (max-width: 1024px) {
  .md3-product-hero {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .md3-product-gallery {
    position: static;
  }

  .md3-product-gallery .flex-control-thumbs li {
    width: 60px !important;
    height: 60px;
  }

  .md3-trust-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .md3-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .md3-specs-groups {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .md3-product-info .product_title {
    font-size: 1.375rem;
    -webkit-text-fill-color: var(--md3-on-surface);
  }

  .md3-pi-actions-main {
    flex-direction: column;
    gap: 12px;
  }

  .md3-pi-price-wrap {
    width: 100%;
    text-align: center;
  }

  .md3-pi-price-wrap .price {
    font-size: 1.375rem;
  }

  .md3-pi-cart-wrap {
    width: 100%;
  }

  .md3-pi-cart-wrap .cart {
    flex-direction: column;
  }

  .md3-pi-cart-wrap .quantity {
    width: 100%;
    justify-content: center;
  }

  .md3-pi-cart-wrap .single_add_to_cart_button {
    width: 100%;
  }

  .md3-pi-actions-row {
    flex-direction: column;
  }

  .md3-pi-action-btn {
    width: 100%;
    justify-content: center;
  }

  .md3-pi-actions-row .btn-pre-invoice {
    width: 100%;
    justify-content: center;
  }

  .md3-tabs-nav {
    gap: 0;
  }

  .md3-tab {
    padding: 12px 16px;
    font-size: 0.8125rem;
  }

  .md3-tabs-content {
    padding: 20px;
  }

  .md3-qs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .md3-trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .md3-related-grid {
    grid-template-columns: 1fr;
  }

  .md3-cta-section {
    padding: 32px 24px;
  }

  .md3-cta-heading {
    font-size: 1.25rem;
  }

  .md3-specs-groups {
    grid-template-columns: 1fr;
  }

  .md3-downloads-grid {
    grid-template-columns: 1fr;
  }

  .md3-product-gallery .flex-control-thumbs li {
    width: 52px !important;
    height: 52px;
  }

  .md3-cta-buttons {
    flex-direction: column;
  }

  .md3-cta-btn {
    width: 100%;
    justify-content: center;
  }

  .md3-cta-buttons .btn-pre-invoice {
    width: 100%;
    justify-content: center;
  }

  .md3-single-wrapper {
    padding-bottom: 80px;
  }
}

@media (max-width: 480px) {
  .md3-trust-grid {
    grid-template-columns: 1fr;
  }

  .md3-brand-card {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .md3-dl-card {
    flex-direction: column;
    text-align: center;
  }

  .md3-dl-btn {
    width: 100%;
    justify-content: center;
  }

  .md3-brand-link {
    width: 100%;
    justify-content: center;
  }
}

/* ─── Responsive Cart ─── */
@media (max-width: 1024px) {
  .md3-cart-wrap {
    flex-direction: column;
  }

  .md3-cart-sidebar {
    width: 100%;
    position: static;
  }

  .md3-cart-item-subtotal {
    display: none;
  }
}

@media (max-width: 768px) {
  .md3-cart-items-header {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }

  .md3-cart-item {
    padding: 16px;
  }

  .md3-cart-item-main {
    flex-wrap: wrap;
    gap: 12px;
  }

  .md3-cart-item-thumb {
    width: 70px;
    height: 70px;
  }

  .md3-cart-item-title {
    font-size: 0.875rem;
  }

  .md3-cart-item-subtotal {
    display: none;
  }

  .md3-cart-item-details {
    width: calc(100% - 82px);
  }

  .md3-cart-item-qty {
    margin-top: 8px;
  }

  .md3-cart-remove {
    position: absolute;
    top: 12px;
    left: 12px;
    width: 32px;
    height: 32px;
    background: rgba(220, 54, 46, 0.1);
  }

  .md3-cart-item {
    position: relative;
  }

  .md3-cart-actions-row {
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px;
  }

  .md3-cart-coupon {
    min-width: 0;
  }

  .md3-cart-coupon .coupon {
    flex-wrap: wrap;
  }

  .md3-coupon-input {
    flex: 1;
    min-width: 0;
  }

  .md3-cart-empty-icon {
    width: 90px;
    height: 90px;
  }

  .md3-cart-empty-title {
    font-size: 1.25rem;
  }

  .md3-cart-empty-wrap {
    padding: 60px 16px;
  }

  .md3-cart-totals-header {
    padding: 16px 18px 12px;
  }

  .md3-cart-totals-table th,
  .md3-cart-totals-table td {
    padding: 10px 18px;
  }

  .md3-cart-checkout-btn {
    padding: 12px 18px 16px;
  }

  .md3-cart-return {
    padding: 12px 18px 16px;
  }
}

@media (max-width: 480px) {
  .md3-cart-item-main {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .md3-cart-item-details {
    width: 100%;
  }

  .md3-cart-item-qty {
    width: 100%;
    justify-content: center;
  }

  .md3-cart-actions-row .md3-btn-md3 {
    width: 100%;
    justify-content: center;
  }

  .md3-cart-coupon .coupon {
    flex-direction: column;
  }

  .md3-cart-coupon .coupon .md3-btn-md3 {
    width: 100%;
    justify-content: center;
  }

  .md3-cart-totals-table th,
  .md3-cart-totals-table td {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }

  .md3-cart-checkout-btn {
    padding: 10px 14px 14px;
  }

  .md3-cart-return {
    padding: 10px 14px 14px;
  }

  .md3-cart-totals-header {
    padding: 14px 14px 10px;
    font-size: 0.875rem;
  }
}

/* ─── Floating Mobile Add-to-Cart Bar ─── */
.md3-floating-cart-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--md3-outline-variant);
  padding: 12px 16px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
}

.md3-floating-cart-bar.visible {
  transform: translateY(0);
}

.md3-floating-cart-bar__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 1200px;
  margin: 0 auto;
}

.md3-floating-cart-bar__price {
  flex-shrink: 0;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--md3-primary);
}

.md3-floating-cart-bar__price .woocommerce-Price-amount {
  background: linear-gradient(135deg, var(--md3-primary), var(--md3-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.md3-floating-cart-bar__price del {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--md3-on-surface-variant);
}

.md3-floating-cart-bar__price del .woocommerce-Price-amount {
  background: none;
  -webkit-text-fill-color: var(--md3-on-surface-variant);
}

.md3-floating-cart-bar__title {
  flex: 1;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--md3-on-surface);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-width: 0;
}

.md3-floating-cart-bar__btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 700;
  border: none;
  border-radius: var(--md3-radius-sm);
  background: var(--md3-gradient-primary);
  color: var(--md3-on-primary);
  cursor: pointer;
  font-family: var(--md3-font);
  transition: all var(--md3-transition-spring);
  box-shadow: var(--md3-elevation-1), var(--md3-glow-primary);
  white-space: nowrap;
  min-height: 44px;
}

.md3-floating-cart-bar__btn:hover {
  box-shadow: var(--md3-elevation-2), var(--md3-glow-primary);
  transform: translateY(-1px);
}

.md3-floating-cart-bar__btn:active {
  transform: translateY(0);
}

.md3-floating-cart-bar__btn.loading {
  opacity: 0.85;
  pointer-events: none;
}

.md3-floating-cart-bar__btn .md3-btn-spinner {
  display: none;
}

.md3-floating-cart-bar__btn.loading .md3-btn-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--md3-on-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: md3Spin 0.6s linear infinite;
}

@media (max-width: 768px) {
  .md3-floating-cart-bar {
    display: block;
  }
}

/* ─── Entrance Animations ─── */
.md3-product-hero > * {
  animation: md3FadeSlideUp 0.5s ease-out both;
}

.md3-product-hero .md3-product-gallery {
  animation-delay: 0ms;
}

.md3-product-hero .md3-product-info {
  animation-delay: 150ms;
}

.md3-qs-section {
  animation: md3FadeSlideUp 0.5s ease-out 0.2s both;
}

.md3-brand-section {
  animation: md3FadeSlideUp 0.5s ease-out 0.3s both;
}

.md3-single-tabs {
  animation: md3FadeSlideUp 0.5s ease-out 0.35s both;
}

.md3-trust-section {
  animation: md3FadeSlideUp 0.5s ease-out 0.4s both;
}

.md3-faq-section {
  animation: md3FadeSlideUp 0.5s ease-out 0.45s both;
}

.md3-cta-section {
  animation: md3FadeSlideUp 0.5s ease-out 0.5s both;
}

.md3-related-section {
  animation: md3FadeSlideUp 0.5s ease-out 0.55s both;
}

/* ─── Checkout ─── Responsive ─── */
@media (max-width: 900px) {
  .md3-checkout-page .wc-block-components-sidebar-layout {
    grid-template-columns: 1fr;
  }

  .md3-checkout-page .wc-block-checkout__sidebar {
    width: 100%;
  }

  .md3-checkout-page .wc-block-components-address-form {
    grid-template-columns: 1fr;
  }

  .md3-checkout-page .wc-block-components-address-form .wc-block-components-address-form__first_name,
  .md3-checkout-page .wc-block-components-address-form .wc-block-components-address-form__last_name {
    grid-column: 1 / -1;
  }

  .md3-checkout-page .wc-block-components-checkout-step__content {
    padding: var(--space-2) var(--space-3);
  }

  .md3-checkout-page .wc-block-components-checkout-step__heading-container {
    padding: var(--space-2) var(--space-3);
  }
}

@media (max-width: 1024px) {
  .md3-checkout-page .wc-block-components-order-summary-item {
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
  }

  .md3-checkout-page .wc-block-components-order-summary-item__image {
    width: 48px;
    height: 48px;
  }

  .md3-checkout-page .wc-block-components-order-summary-item__total-price {
    max-width: 40%;
    font-size: var(--font-size-xs);
  }

  .md3-checkout-page .wc-block-components-order-summary-item__total-price .price {
    font-size: var(--font-size-xs);
  }

  .md3-checkout-page .wc-block-components-totals-wrapper {
    padding: var(--space-2) var(--space-3);
  }
}

@media (max-width: 600px) {
  .md3-checkout-page .wc-block-components-text-input input {
    height: 50px;
    padding: 22px 14px 6px;
    font-size: var(--font-size-sm);
  }

  .md3-checkout-page .wc-block-components-text-input textarea {
    padding: 26px 14px 10px;
    min-height: 80px;
  }

  .md3-checkout-page .wc-blocks-components-select__select {
    height: 50px;
    padding: 20px 38px 6px 12px;
    font-size: var(--font-size-sm);
  }

  .md3-checkout-page .wc-block-components-text-input label {
    right: 16px;
    font-size: var(--font-size-sm);
  }

  .md3-checkout-page .wc-block-components-checkout-step__title {
    font-size: var(--font-size-base);
  }

  .md3-checkout-page .wc-block-components-checkout-place-order-button {
    font-size: var(--font-size-sm);
    padding: 14px 24px;
    min-height: 48px;
  }

  .md3-checkout-page .wc-block-components-order-summary-item {
    gap: 8px;
    padding: var(--space-1) var(--space-2);
  }

  .md3-checkout-page .wc-block-components-order-summary-item__image {
    width: 40px;
    height: 40px;
  }

  .md3-checkout-page .wc-block-components-order-summary-item__quantity {
    width: 20px;
    height: 20px;
    font-size: 9px;
    top: -6px;
    left: -6px;
  }

  .md3-checkout-page .wc-block-components-order-summary-item__total-price {
    max-width: 35%;
    font-size: 0.6875rem;
  }

  .md3-checkout-page .wc-block-components-order-summary-item__total-price .price {
    font-size: 0.6875rem;
  }

  .md3-checkout-page .wc-block-components-totals-item {
    font-size: var(--font-size-xs);
  }

  .md3-checkout-page .wc-block-components-totals-wrapper {
    padding: var(--space-1) var(--space-2);
  }

  .md3-checkout-page .wc-block-components-totals-footer-item .wc-block-components-totals-item__value {
    font-size: var(--font-size-base);
  }

  .md3-checkout-page .wc-block-checkout__actions {
    padding: var(--space-2) var(--space-3);
  }

  .md3-checkout-page .wc-block-components-checkout-order-summary__title-price {
    font-size: var(--font-size-sm);
  }

  .md3-checkout-page .wc-block-components-order-summary-item {
    padding: var(--space-2) var(--space-3);
  }

  .md3-checkout-page .wc-block-components-order-summary-item__image {
    width: 48px;
    height: 48px;
  }

  .md3-checkout-page .wc-block-components-order-summary-item__quantity {
    width: 20px;
    height: 20px;
    font-size: 10px;
    top: -6px;
    left: -6px;
  }

  .md3-checkout-page .wc-block-components-totals-wrapper {
    padding: var(--space-1) var(--space-3);
  }

  .md3-checkout-page__title {
    font-size: var(--font-size-2xl);
  }
}

@media (prefers-reduced-motion: reduce) {
  .md3-product-hero > *,
  .md3-qs-section,
  .md3-brand-section,
  .md3-single-tabs,
  .md3-trust-section,
  .md3-faq-section,
  .md3-cta-section,
  .md3-related-section {
    animation: none;
  }
  
  .md3-qs-card,
  .md3-spec-group,
  .md3-dl-card {
    animation: none;
  }

  .md3-checkout-page .wc-block-components-checkout-step,
  .md3-checkout-page .wc-block-components-text-input input,
  .md3-checkout-page .wc-block-components-text-input textarea,
  .md3-checkout-page .wc-block-components-checkbox__mark,
  .md3-checkout-page .wc-block-components-checkbox__mark path {
    transition: none;
  }
}