/* ==========================================================================
   Product Page — Isracollect Premium E-Commerce
   Elegant gallery, refined pricing, trust-inspiring availability badges,
   polished tabs with smooth transitions, and full responsiveness.
   ========================================================================== */

/* Main Layout (JS SPA uses .product-page__main, PHP SSR uses .product-page__layout)
   ========================================================================== */

.product-page {
  padding-bottom: var(--space-3xl);
}

.product-page__main,
.product-page__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
  padding-top: var(--space-md);
}

@media (min-width: 768px) {
  .product-page__main,
  .product-page__layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    padding-top: var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .product-page__main,
  .product-page__layout {
    grid-template-columns: 55% 1fr;
    gap: var(--space-3xl);
  }
}

/* Image Gallery
   ========================================================================== */

.product-page__gallery {
  position: relative;
}

@media (min-width: 768px) {
  .product-page__gallery {
    position: sticky;
    top: calc(var(--header-height, 64px) + var(--space-lg));
    align-self: start;
  }
}

/* JS SPA gallery component */

.image-gallery__main {
  position: relative;
  border-radius: var(--radius-xl, 0.75rem);
  overflow: hidden;
  background: var(--bg-tertiary);
  cursor: zoom-in;
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0, 0, 0, 0.1));
  transition: box-shadow 0.3s ease;
}

.image-gallery__main:hover {
  box-shadow: var(--shadow-lg, 0 8px 24px rgba(0, 0, 0, 0.12));
}

.image-gallery__main-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  display: block;
  transition:
    opacity 0.3s ease,
    transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.image-gallery__main:hover .image-gallery__main-img {
  transform: scale(1.02);
}

.image-gallery__counter {
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-full, 9999px);
  font-size: var(--font-size-xs, 0.75rem);
  font-weight: var(--font-weight-medium, 500);
  color: #fff;
  letter-spacing: var(--letter-spacing-wide, 0.02em);
  min-width: 44px;
  text-align: center;
}

/* Gallery navigation arrows */

.image-gallery__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg, rgba(255, 255, 255, 0.85));
  backdrop-filter: var(--glass-blur, blur(12px));
  -webkit-backdrop-filter: var(--glass-blur, blur(12px));
  border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.18));
  border-radius: var(--radius-full, 9999px);
  color: var(--text-primary);
  cursor: pointer;
  z-index: 2;
  transition:
    all 0.2s ease;
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0, 0, 0, 0.1));
  opacity: 0;
  padding: 0;
}

.image-gallery__main:hover ~ .image-gallery__nav,
.image-gallery__nav:hover,
.product-page__gallery:hover .image-gallery__nav {
  opacity: 1;
}

.image-gallery__nav:hover {
  background: var(--bg-secondary);
  box-shadow: var(--shadow-lg, 0 8px 24px rgba(0, 0, 0, 0.12));
  transform: translateY(-50%) scale(1.08);
}

.image-gallery__nav:active {
  transform: translateY(-50%) scale(0.96);
}

.image-gallery__nav--prev {
  left: var(--space-md);
}

.image-gallery__nav--next {
  right: var(--space-md);
}

.image-gallery__nav svg {
  width: 20px;
  height: 20px;
}

/* Thumbnails
   ========================================================================== */

/* JS SPA variant */
.image-gallery__thumbs {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
  padding: var(--space-xs) 2px var(--space-sm) 2px;
}

.image-gallery__thumbs::-webkit-scrollbar {
  height: 4px;
}

.image-gallery__thumbs::-webkit-scrollbar-track {
  background: transparent;
}

.image-gallery__thumbs::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: var(--radius-full, 9999px);
}

.image-gallery__thumb {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md, 0.375rem);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  background: var(--bg-tertiary);
  padding: 0;
  box-shadow: var(--shadow-xs, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.image-gallery__thumb:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
  transform: translateY(-2px);
}

.image-gallery__thumb--active {
  border-color: var(--brand-600);
  box-shadow:
    0 0 0 3px var(--accent-blue-glow, rgba(99, 102, 241, 0.15)),
    var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}

.image-gallery__thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.image-gallery__thumb:hover .image-gallery__thumb-img {
  transform: scale(1.08);
}

/* PHP SSR thumbnail variant */

.product-page__main-image {
  position: relative;
  border-radius: var(--radius-xl, 0.75rem);
  overflow: hidden;
  background: var(--bg-tertiary);
  margin: 0;
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0, 0, 0, 0.1));
}

.product-page__image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  display: block;
}

.product-page__image--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  aspect-ratio: 1 / 1;
}

.product-page__image--placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.3;
}

.product-page__thumbnails {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
  padding: var(--space-xs) 2px var(--space-sm) 2px;
}

.product-page__thumbnails::-webkit-scrollbar {
  height: 4px;
}

.product-page__thumbnails::-webkit-scrollbar-track {
  background: transparent;
}

.product-page__thumbnails::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: var(--radius-full, 9999px);
}

.product-page__thumb {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md, 0.375rem);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  background: var(--bg-tertiary);
  padding: 0;
  box-shadow: var(--shadow-xs, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.product-page__thumb:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
  transform: translateY(-2px);
}

.product-page__thumb--active {
  border-color: var(--brand-600);
  box-shadow:
    0 0 0 3px var(--accent-blue-glow, rgba(99, 102, 241, 0.15)),
    var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}

.product-page__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.product-page__thumb:hover img {
  transform: scale(1.08);
}

/* Zoom Modal
   ========================================================================== */

.image-gallery__zoom-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal, 900);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.image-gallery__zoom-modal--open {
  opacity: 1;
}

.image-gallery__zoom-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.image-gallery__zoom-container {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--radius-xl, 0.75rem);
}

.image-gallery__zoom-img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  transition: transform 0.2s ease;
  transform-origin: center center;
  border-radius: var(--radius-lg, 0.5rem);
}

.image-gallery__zoom-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full, 9999px);
  color: #fff;
  cursor: pointer;
  z-index: 2;
  transition:
    background 0.2s ease,
    transform 0.3s ease;
  font-size: var(--font-size-lg, 1.125rem);
  padding: 0;
}

.image-gallery__zoom-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg) scale(1.05);
}

/* Product Info
   ========================================================================== */

.product-page__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* PHP SSR brand */
.product-page__brand {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--brand-600);
  font-weight: var(--font-weight-medium, 500);
  letter-spacing: var(--letter-spacing-wide, 0.02em);
  text-transform: uppercase;
  margin: 0;
}

.product-page__name {
  font-size: var(--font-size-3xl, 1.875rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-primary);
  line-height: var(--line-height-tight, 1.15);
  letter-spacing: var(--letter-spacing-tight, -0.02em);
  margin: 0;
  text-wrap: balance;
}

/* PHP SSR reference */
.product-page__ref {
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--text-tertiary);
  font-family: var(--font-mono, monospace);
  padding: 2px var(--space-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-xs, 0.125rem);
  display: inline-block;
  width: fit-content;
}

/* Meta row (JS SPA) */

.product-page__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
}

/* JS SPA manufacturer */
.product-page__manufacturer {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--brand-600);
  font-weight: var(--font-weight-medium, 500);
  text-decoration: none;
  transition: color 0.2s ease;
  letter-spacing: var(--letter-spacing-wide, 0.02em);
  text-transform: uppercase;
}

.product-page__manufacturer:hover {
  color: var(--brand-700);
}

/* JS SPA reference */
.product-page__reference {
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--text-tertiary);
  font-family: var(--font-mono, monospace);
  padding: 2px var(--space-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-xs, 0.125rem);
}

/* Rating */

.product-page__rating {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin: 0;
}

.product-page__stars {
  display: flex;
  align-items: center;
  gap: 2px;
}

.product-page__stars svg {
  width: 18px;
  height: 18px;
}

.star--filled {
  color: #f59e0b;
  fill: #f59e0b;
}

.star--empty {
  color: var(--border-medium);
}

.product-page__rating-text {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium, 500);
}

/* Price
   ========================================================================== */

/* JS SPA price block */
.product-page__price-block {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg, 0.5rem);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}

/* PHP SSR pricing block */
.product-page__pricing {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg, 0.5rem);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}

.product-page__price {
  font-size: var(--font-size-4xl, 2.25rem);
  font-weight: var(--font-weight-extrabold, 800);
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-tight, -0.02em);
  line-height: 1;
}

.product-page__price-original,
.product-page__price--original {
  font-size: var(--font-size-xl, 1.25rem);
  color: var(--text-tertiary);
  text-decoration: line-through;
  text-decoration-thickness: 2px;
  font-weight: var(--font-weight-normal, 400);
}

.product-page__price-promo,
.product-page__price--promo {
  font-size: var(--font-size-4xl, 2.25rem);
  font-weight: var(--font-weight-extrabold, 800);
  color: var(--accent-green);
  letter-spacing: var(--letter-spacing-tight, -0.02em);
  line-height: 1;
}

.product-page__discount-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs, 0.75rem);
  font-weight: var(--font-weight-bold, 700);
  color: #fff;
  background: linear-gradient(135deg, var(--accent-green, #059669) 0%, #047857 100%);
  border-radius: var(--radius-full, 9999px);
  letter-spacing: var(--letter-spacing-wide, 0.02em);
  text-transform: uppercase;
  box-shadow: var(--shadow-glow-green, 0 0 16px rgba(5, 150, 105, 0.25));
  line-height: 1;
}

/* PHP SSR savings line */
.product-page__savings {
  display: block;
  width: 100%;
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--accent-green);
  font-weight: var(--font-weight-semibold, 600);
  margin-top: var(--space-xs);
}

/* PHP SSR badge */
.product-page__badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs, 0.75rem);
  font-weight: var(--font-weight-bold, 700);
  color: #fff;
  background: var(--brand-600);
  border-radius: var(--radius-full, 9999px);
  letter-spacing: var(--letter-spacing-wider, 0.05em);
  text-transform: uppercase;
  line-height: 1;
  width: fit-content;
}

/* Availability
   ========================================================================== */

.product-page__availability {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-semibold, 600);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full, 9999px);
  width: fit-content;
  letter-spacing: var(--letter-spacing-wide, 0.02em);
}

.product-page__availability i,
.product-page__availability svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.product-page__availability--in {
  color: var(--accent-green);
  background: var(--accent-green-light, rgba(5, 150, 105, 0.08));
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.product-page__availability--out {
  color: var(--accent-red);
  background: var(--accent-red-light, rgba(220, 38, 38, 0.08));
  border: 1px solid rgba(220, 38, 38, 0.2);
}

/* PHP SSR stock variant */

.product-page__stock {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-semibold, 600);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full, 9999px);
  width: fit-content;
  letter-spacing: var(--letter-spacing-wide, 0.02em);
}

.product-page__stock svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.product-page__stock--in {
  color: var(--accent-green);
  background: var(--accent-green-light, rgba(5, 150, 105, 0.08));
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.product-page__stock--out {
  color: var(--accent-red);
  background: var(--accent-red-light, rgba(220, 38, 38, 0.08));
  border: 1px solid rgba(220, 38, 38, 0.2);
}

/* Stock urgency */

.product-page__stock-urgency {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  margin-top: var(--space-sm, 0.5rem);
  padding: var(--space-xs, 0.25rem) var(--space-md, 1rem);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-bold, 700);
  color: #c2410c;
  background: rgba(234, 88, 12, 0.08);
  border: 1px solid rgba(234, 88, 12, 0.25);
  border-radius: var(--radius-full, 9999px);
  animation: stock-pulse 2s ease-in-out infinite;
}

.product-page__stock-urgency svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: #ea580c;
}

@keyframes stock-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Combination Selector
   ========================================================================== */

.product-page__combinations {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.product-page__combo-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.product-page__combo-label {
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-wide, 0.02em);
  text-transform: uppercase;
}

.product-page__combo-options {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.product-page__combo-btn {
  padding: var(--space-sm) var(--space-lg);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-full, 9999px);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-medium, 500);
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    color 0.2s ease,
    background 0.2s ease,
    transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.2s ease;
  min-width: 48px;
  text-align: center;
}

.product-page__combo-btn:hover {
  border-color: var(--brand-400);
  color: var(--text-primary);
  background: var(--brand-50);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}

.product-page__combo-btn--active {
  border-color: var(--brand-600);
  background: var(--brand-50);
  color: var(--brand-700);
  font-weight: var(--font-weight-semibold, 600);
  box-shadow: 0 0 0 3px var(--accent-blue-glow, rgba(99, 102, 241, 0.15));
}

/* Actions
   ========================================================================== */

.product-page__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding-top: var(--space-md);
}

/* PHP SSR quantity */

.product-page__quantity {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md, 0.375rem);
  overflow: hidden;
  background: var(--bg-secondary);
  box-shadow: var(--shadow-xs, 0 1px 2px rgba(0, 0, 0, 0.05));
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.product-page__quantity:focus-within {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--accent-blue-glow, rgba(99, 102, 241, 0.15));
}

.product-page__qty-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--font-size-lg, 1.125rem);
  font-weight: var(--font-weight-semibold, 600);
  transition:
    background 0.15s ease,
    color 0.15s ease;
}

.product-page__qty-btn:hover {
  background: var(--bg-tertiary);
  color: var(--brand-600);
}

.product-page__qty-btn:active {
  background: var(--brand-50);
}

.product-page__qty-input {
  width: 52px;
  height: 42px;
  text-align: center;
  border: none;
  border-left: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-primary);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-bold, 700);
  -moz-appearance: textfield;
}

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

/* Add to cart (both PHP + JS) */

.product-page__add-to-cart,
.product-page__add-cart {
  flex: 1;
  min-width: 220px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base, 1rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-on-brand, #fff);
  background: linear-gradient(135deg, var(--brand-600) 0%, var(--brand-700) 100%);
  border: none;
  border-radius: var(--radius-lg, 0.5rem);
  cursor: pointer;
  transition:
    transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.3s ease;
  box-shadow:
    var(--shadow-md, 0 4px 12px rgba(0, 0, 0, 0.1)),
    var(--shadow-glow-brand, 0 0 20px rgba(99, 102, 241, 0.2));
  text-align: center;
  letter-spacing: var(--letter-spacing-wide, 0.02em);
  text-transform: uppercase;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
}

.product-page__add-to-cart::before,
.product-page__add-cart::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.product-page__add-to-cart:hover:not(:disabled),
.product-page__add-cart:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow:
    var(--shadow-lg, 0 8px 24px rgba(0, 0, 0, 0.12)),
    0 0 32px rgba(99, 102, 241, 0.35);
}

.product-page__add-to-cart:hover::before,
.product-page__add-cart:hover::before {
  opacity: 1;
}

.product-page__add-to-cart:active:not(:disabled),
.product-page__add-cart:active:not(:disabled) {
  transform: translateY(0);
  box-shadow:
    var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1)),
    var(--shadow-glow-brand, 0 0 20px rgba(99, 102, 241, 0.2));
}

.product-page__add-to-cart:disabled,
.product-page__add-cart:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.product-page__add-to-cart svg,
.product-page__add-cart svg {
  width: 20px;
  height: 20px;
}

/* Secondary actions */

.product-page__secondary-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.product-page__wish-btn--active,
.product-page__wishlist-btn.active {
  color: var(--accent-red) !important;
  border-color: var(--accent-red) !important;
  background: var(--accent-red-glow, rgba(220, 38, 38, 0.1));
}

/* Product Tabs
   ========================================================================== */

.product-tabs {
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.product-tabs__nav {
  display: flex;
  border-bottom: 2px solid var(--border-subtle);
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  position: relative;
}

.product-tabs__nav::-webkit-scrollbar {
  display: none;
}

.product-tabs__tab {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-tertiary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  white-space: nowrap;
  transition:
    color 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease;
  letter-spacing: var(--letter-spacing-wide, 0.02em);
  text-transform: uppercase;
  position: relative;
}

.product-tabs__tab:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md, 0.375rem) var(--radius-md, 0.375rem) 0 0;
}

.product-tabs__tab--active {
  color: var(--brand-600);
  border-bottom-color: var(--brand-600);
}

.product-tabs__panels {
  padding: var(--space-xl) 0;
}

.product-tabs__panel {
  animation: productTabFadeIn 0.3s ease both;
}

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

/* Keep old keyframe name for JS compatibility */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Description (both PHP + JS)
   ========================================================================== */

.product-tabs__description,
.product-page__description-content {
  color: var(--text-secondary);
  font-size: var(--font-size-base, 1rem);
  line-height: var(--line-height-relaxed, 1.65);
  max-width: 80ch;
}

.product-tabs__description p,
.product-page__description-content p {
  margin-bottom: var(--space-lg);
}

.product-tabs__description p:last-child,
.product-page__description-content p:last-child {
  margin-bottom: 0;
}

.product-tabs__description img,
.product-page__description-content img {
  max-width: 100%;
  border-radius: var(--radius-lg, 0.5rem);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0, 0, 0, 0.1));
  margin: var(--space-md) 0;
}

.product-tabs__description a,
.product-page__description-content a {
  color: var(--text-link, var(--brand-600));
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s ease;
}

.product-tabs__description a:hover,
.product-page__description-content a:hover {
  color: var(--brand-700);
}

.product-tabs__description ul,
.product-tabs__description ol,
.product-page__description-content ul,
.product-page__description-content ol {
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.product-tabs__description li,
.product-page__description-content li {
  margin-bottom: var(--space-xs);
}

/* PHP SSR section titles & description/features sections */

.product-page__section-title {
  font-size: var(--font-size-xl, 1.25rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-tight, -0.02em);
  margin: 0 0 var(--space-lg) 0;
  position: relative;
  display: inline-block;
  padding-bottom: var(--space-sm);
}

.product-page__section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-600), var(--brand-400));
  border-radius: var(--radius-full, 9999px);
}

.product-page__description {
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--border-subtle);
}

.product-page__features {
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--border-subtle);
}

.product-page__reviews {
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--border-subtle);
}

/* Features Table (both PHP + JS)
   ========================================================================== */

.product-tabs__features-table,
.product-page__features-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-lg, 0.5rem);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.product-tabs__features-table tr,
.product-page__features-table tr {
  transition: background 0.15s ease;
}

.product-tabs__features-table tr:not(:last-child),
.product-page__features-table tr:not(:last-child) {
  border-bottom: 1px solid var(--border-subtle);
}

.product-tabs__features-table tr:last-child td:first-child,
.product-page__features-table tr:last-child td:first-child,
.product-page__features-table tr:last-child th {
  border-bottom-left-radius: var(--radius-lg, 0.5rem);
}

.product-tabs__features-table tr:last-child td:last-child,
.product-page__features-table tr:last-child td:last-child {
  border-bottom-right-radius: var(--radius-lg, 0.5rem);
}

.product-tabs__feature-label,
.product-page__features-table th {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-secondary);
  width: 40%;
  vertical-align: top;
  border-right: 1px solid var(--border-subtle);
  text-align: left;
}

.product-tabs__feature-value,
.product-page__features-table td {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium, 500);
}

.product-tabs__features-table tr:nth-child(odd),
.product-page__features-table tr:nth-child(odd) {
  background: var(--bg-secondary);
}

.product-tabs__features-table tr:nth-child(even),
.product-page__features-table tr:nth-child(even) {
  background: var(--bg-tertiary);
}

.product-tabs__features-table tr:hover,
.product-page__features-table tr:hover {
  background: var(--brand-50);
}

/* Reviews
   ========================================================================== */

.product-tabs__review-summary {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-xl);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl, 0.75rem);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}

.product-tabs__review-avg {
  font-size: var(--font-size-5xl, 3rem);
  font-weight: var(--font-weight-extrabold, 800);
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: var(--letter-spacing-tight, -0.02em);
}

.product-tabs__review-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.review-card {
  padding: var(--space-lg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl, 0.75rem);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-xs, 0 1px 2px rgba(0, 0, 0, 0.05));
  transition:
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.review-card:hover {
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
  border-color: var(--border-medium);
}

.review-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
}

.review-card__author {
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-primary);
}

.review-card__date {
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--text-tertiary);
  margin-left: auto;
  font-weight: var(--font-weight-medium, 500);
}

.review-card__title {
  font-size: var(--font-size-base, 1rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-primary);
  margin: 0 0 var(--space-sm) 0;
}

.review-card__body {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed, 1.65);
  margin: 0;
}

/* Review Form
   ========================================================================== */

.product-tabs__review-form {
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl, 0.75rem);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}

.product-tabs__review-form h4 {
  font-size: var(--font-size-xl, 1.25rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-primary);
  margin: 0 0 var(--space-lg) 0;
  letter-spacing: var(--letter-spacing-tight, -0.02em);
}

.product-tabs__review-form input[type="text"],
.product-tabs__review-form input[type="email"],
.product-tabs__review-form textarea,
.product-tabs__review-form select {
  width: 100%;
  padding: var(--space-md);
  font-size: var(--font-size-sm, 0.875rem);
  font-family: var(--font-family, inherit);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md, 0.375rem);
  outline: none;
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
  -webkit-appearance: none;
}

.product-tabs__review-form input[type="text"]:focus,
.product-tabs__review-form input[type="email"]:focus,
.product-tabs__review-form textarea:focus,
.product-tabs__review-form select:focus {
  border-color: var(--brand-500);
  background: var(--bg-secondary);
  box-shadow: 0 0 0 4px var(--accent-blue-glow, rgba(99, 102, 241, 0.15));
}

.product-tabs__review-form input[type="text"]::placeholder,
.product-tabs__review-form input[type="email"]::placeholder,
.product-tabs__review-form textarea::placeholder {
  color: var(--text-tertiary);
}

.product-tabs__review-form textarea {
  min-height: 120px;
  resize: vertical;
}

.product-tabs__review-form label {
  display: block;
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

/* Similar Products
   ========================================================================== */

.product-page__similar {
  margin-top: var(--space-3xl);
  padding-top: var(--space-3xl);
  border-top: 1px solid var(--border-subtle);
}

.product-page__similar h2,
.product-page__similar .section-title,
.product-page__similar .section__title {
  font-size: var(--font-size-2xl, 1.5rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-tight, -0.02em);
  margin-bottom: var(--space-xl);
  position: relative;
  display: inline-block;
}

.product-page__similar h2::after,
.product-page__similar .section-title::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-600), var(--brand-400));
  border-radius: var(--radius-full, 9999px);
}

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

/* Mobile */

@media (max-width: 767px) {
  .product-page__main,
  .product-page__layout {
    gap: var(--space-lg);
    padding-top: var(--space-sm);
  }

  .product-page__name {
    font-size: var(--font-size-2xl, 1.5rem);
  }

  .product-page__price,
  .product-page__price--promo,
  .product-page__price-promo {
    font-size: var(--font-size-3xl, 1.875rem);
  }

  .product-page__price-block,
  .product-page__pricing {
    padding: var(--space-md);
  }

  .product-page__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .product-page__add-to-cart,
  .product-page__add-cart {
    width: 100%;
    min-width: unset;
  }

  .product-page__secondary-actions {
    justify-content: center;
  }

  .product-page__main-image {
    border-radius: var(--radius-lg, 0.5rem);
  }

  .image-gallery__main {
    border-radius: var(--radius-lg, 0.5rem);
  }

  .image-gallery__thumb,
  .product-page__thumb {
    width: 56px;
    height: 56px;
  }

  .image-gallery__nav {
    opacity: 1;
    width: 36px;
    height: 36px;
  }

  .product-tabs__tab {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-xs, 0.75rem);
  }

  .product-tabs__review-summary {
    flex-direction: column;
    text-align: center;
    padding: var(--space-lg);
  }

  .product-tabs__review-avg {
    font-size: var(--font-size-4xl, 2.25rem);
  }

  .product-tabs__features-table,
  .product-page__features-table {
    font-size: var(--font-size-xs, 0.75rem);
  }

  .product-tabs__feature-label,
  .product-tabs__feature-value,
  .product-page__features-table th,
  .product-page__features-table td {
    padding: var(--space-sm) var(--space-md);
  }

  .product-tabs__feature-label,
  .product-page__features-table th {
    width: 45%;
  }

  .review-card {
    padding: var(--space-md);
  }

  .product-tabs__review-form {
    padding: var(--space-md);
  }

  .product-page__similar {
    margin-top: var(--space-2xl);
    padding-top: var(--space-2xl);
  }

  .product-page__description,
  .product-page__features,
  .product-page__reviews {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
  }

  .image-gallery__zoom-close {
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
  }
}

/* Tablet */

@media (min-width: 768px) and (max-width: 1023px) {
  .product-page__name {
    font-size: var(--font-size-2xl, 1.5rem);
  }

  .product-page__price,
  .product-page__price--promo,
  .product-page__price-promo {
    font-size: var(--font-size-3xl, 1.875rem);
  }

  .product-page__info {
    gap: var(--space-md);
  }
}

/* Large screens */

@media (min-width: 1280px) {
  .product-page__name {
    font-size: var(--font-size-4xl, 2.25rem);
  }

  .product-page__price,
  .product-page__price--promo,
  .product-page__price-promo {
    font-size: var(--font-size-5xl, 3rem);
  }

  .image-gallery__thumb,
  .product-page__thumb {
    width: 80px;
    height: 80px;
  }
}

/* Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .image-gallery__main-img,
  .image-gallery__nav,
  .image-gallery__thumb,
  .product-page__thumb,
  .product-page__combo-btn,
  .product-page__add-to-cart,
  .product-page__add-cart,
  .review-card,
  .product-tabs__panel {
    transition: none;
  }

  .image-gallery__main:hover .image-gallery__main-img {
    transform: none;
  }

  .product-tabs__panel {
    animation: none;
  }
}

/* ==========================================================================
   Share Buttons
   ========================================================================== */

.product-page__share {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

.product-page__share-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  white-space: nowrap;
}

.product-page__share-buttons {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.product-page__share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}

.product-page__share-btn svg {
  width: 18px;
  height: 18px;
}

.product-page__share-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.product-page__share-btn--whatsapp:hover {
  background: #25D366;
  border-color: #25D366;
  color: #fff;
}

.product-page__share-btn--facebook:hover {
  background: #1877F2;
  border-color: #1877F2;
  color: #fff;
}

.product-page__share-btn--telegram:hover {
  background: #0088CC;
  border-color: #0088CC;
  color: #fff;
}

.product-page__share-btn--copy:hover {
  background: var(--brand-600);
  border-color: var(--brand-600);
  color: #fff;
}

.product-page__share-btn--copy.copied {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: #fff;
}

.product-page__share-btn--native {
  display: none;
}

@supports (selector(:has(*))) {
  /* Show native share button only if JS share API is available — toggled via class */
}

@media (max-width: 767px) {
  .product-page__share-btn--native {
    display: inline-flex;
  }
}

/* ==========================================================================
   Trust Badges
   ========================================================================== */

.product-page__trust {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.product-page__trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  text-align: center;
}

.product-page__trust-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--brand-600);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-page__trust-icon svg {
  width: 20px;
  height: 20px;
}

.product-page__trust-item:hover .product-page__trust-icon {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.product-page__trust-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  line-height: var(--line-height-tight);
}

@media (max-width: 479px) {
  .product-page__trust {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
}

/* ==========================================================================
   Delivery Info Box
   ========================================================================== */

.product-page__delivery {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--accent-green-light);
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.04), rgba(5, 150, 105, 0.01));
  border-radius: var(--radius-lg);
}

.product-page__delivery-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-normal);
}

.product-page__delivery-row svg {
  width: 18px;
  height: 18px;
  color: var(--accent-green);
  flex-shrink: 0;
}

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

/* ==========================================================================
   Product Page Tabs (Description / Features / Reviews)
   ========================================================================== */
.product-page__tabs {
  margin-top: var(--space-2xl);
}

.product-page__tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-subtle, #e5e7eb);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.product-page__tab-btn {
  background: none;
  border: none;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-medium, 500);
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  transition: color 0.2s ease;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}

.product-page__tab-btn:hover {
  color: var(--text-primary);
}

.product-page__tab-btn.active {
  color: var(--brand-700);
  font-weight: var(--font-weight-semibold, 600);
  border-bottom-color: var(--brand-600);
}

.product-page__tab-panel {
  animation: tabFadeIn 0.2s ease;
}

.product-page__tab-panel[hidden] {
  display: none;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}