.product-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: var(--space-xl);
  align-items: start;
}

.product-detail__gallery {
  min-width: 0;
}

.product-detail__placeholder {
  display: grid;
  place-items: center;
  min-height: 16rem;
  padding: var(--space-xl);
  background: var(--color-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.product-gallery {
  display: grid;
  gap: var(--space-md);
}

.product-gallery:focus {
  outline: none;
}

.product-gallery:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
  border-radius: var(--radius-md);
}

.product-gallery__stage {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: var(--blueprint-size) var(--blueprint-size);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  touch-action: pan-y pinch-zoom;
}

.product-gallery__figure {
  position: relative;
  margin: 0;
  min-width: 0;
}

.product-gallery__zoom {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
  -webkit-tap-highlight-color: transparent;
}

.product-gallery__main {
  display: block;
  width: 100%;
  max-height: min(32rem, 70vh);
  margin-inline: auto;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.product-gallery__counter {
  position: absolute;
  right: var(--space-sm);
  bottom: var(--space-sm);
  margin: 0;
  padding: 0.35rem 0.65rem;
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-on-dark);
  background: rgb(26 35 50 / 82%);
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.product-gallery__nav {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  color: var(--color-primary);
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  transition:
    transform var(--transition-spring),
    background-color var(--transition-base),
    color var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.product-gallery__nav:hover,
.product-gallery__nav:focus-visible {
  color: var(--color-text-on-dark);
  background: var(--color-primary);
  transform: translateY(-1px);
}

.product-gallery__nav:active {
  transform: translateY(0) scale(0.96);
}

.product-gallery__nav-icon {
  display: block;
}

.product-gallery__thumbs {
  display: flex;
  gap: var(--space-sm);
  padding-block: var(--space-xs);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.product-gallery__thumb {
  flex: 0 0 4.75rem;
  width: 4.75rem;
  height: 4.75rem;
  padding: 0;
  overflow: hidden;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  scroll-snap-align: center;
  cursor: pointer;
  transition:
    border-color var(--transition-base),
    transform var(--transition-spring);
  -webkit-tap-highlight-color: transparent;
}

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

.product-gallery__thumb:hover,
.product-gallery__thumb:focus-visible {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.product-gallery__thumb--active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.product-lightbox {
  width: min(100vw, 72rem);
  max-width: 100vw;
  height: 100%;
  max-height: 100dvh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  color: var(--color-text-on-dark);
  background: rgb(15 21 32 / 96%);
  border: 0;
}

.product-lightbox::backdrop {
  background: rgb(15 21 32 / 72%);
  backdrop-filter: blur(4px);
}

.product-lightbox__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  padding-top: calc(var(--space-md) + env(safe-area-inset-top, 0px));
}

.product-lightbox__counter {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted-on-dark);
}

.product-lightbox__close {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  color: var(--color-text-on-dark);
  background: transparent;
  border: 2px solid rgb(244 245 247 / 35%);
  border-radius: var(--radius-sm);
  -webkit-tap-highlight-color: transparent;
}

.product-lightbox__close:hover,
.product-lightbox__close:focus-visible {
  background: rgb(244 245 247 / 10%);
  border-color: var(--color-text-on-dark);
}

.product-lightbox__stage {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-sm);
  min-height: 0;
  height: calc(100% - 4.5rem);
  padding-inline: var(--space-md);
  padding-bottom: calc(var(--space-lg) + env(safe-area-inset-bottom, 0px));
}

.product-lightbox__image {
  display: block;
  width: 100%;
  max-height: calc(100dvh - 8rem);
  margin-inline: auto;
  object-fit: contain;
}

.product-lightbox__nav {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  color: var(--color-text-on-dark);
  background: rgb(244 245 247 / 8%);
  border: 2px solid rgb(244 245 247 / 25%);
  border-radius: var(--radius-sm);
  -webkit-tap-highlight-color: transparent;
}

.product-lightbox__nav:hover,
.product-lightbox__nav:focus-visible {
  background: rgb(244 245 247 / 16%);
  border-color: var(--color-text-on-dark);
}

.product-detail__info {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  border-top: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.product-detail__sku {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.product-detail__stock {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}

@media (max-width: 900px) {
  .product-detail {
    grid-template-columns: 1fr;
  }

  .product-gallery__stage {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .product-gallery__nav {
    position: absolute;
    top: 50%;
    z-index: 1;
    transform: translateY(-50%);
  }

  .product-gallery__nav--prev {
    left: var(--space-sm);
  }

  .product-gallery__nav--next {
    right: var(--space-sm);
  }

  .product-gallery__nav:hover,
  .product-gallery__nav:focus-visible {
    transform: translateY(calc(-50% - 1px));
  }

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

  .product-gallery__main {
    max-height: min(24rem, 58vh);
  }

  .product-gallery__thumb {
    flex-basis: 4.25rem;
    width: 4.25rem;
    height: 4.25rem;
  }
}

@media (max-width: 480px) {
  .product-gallery__stage {
    padding: var(--space-sm);
  }

  .product-gallery__nav {
    width: 2.25rem;
    height: 2.25rem;
    background: rgb(255 255 255 / 92%);
  }

  .product-lightbox__stage {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
    place-items: center;
  }

  .product-lightbox__nav {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .product-gallery__nav,
  .product-gallery__thumb {
    transition: none;
  }
}