/* =========================================
   PRODUCT DETAIL — PAZEL DNA
========================================= */

.product-detail-page {
  min-height: 100vh;
  padding-top: var(--header-height);
  background: var(--color-bg-body);

  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
}

/* =========================================
   GALLERY
========================================= */

.product-detail__gallery {
  padding: var(--space-8) var(--space-6) var(--space-24) var(--panel-padding-x);

  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.product-detail__media {
  position: relative;

  width: 100%;
  max-width: 480px;
  aspect-ratio: 4 / 5;

  margin: 0 auto;
  padding: 0;
  border: 0;
  background: var(--color-surface-subtle);

  overflow: hidden;
  cursor: zoom-in;
}

.product-detail__media img {
  width: 100%;
  height: auto;
  object-fit: cover;

  display: block;

  transition: transform var(--duration-normal) var(--ease-smooth);
}

.product-detail__media:hover img {
  transform: scale(1.025);
}

/* =========================================
   SUMMARY
========================================= */

.product-detail__summary {
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));

  padding: var(--space-8) var(--panel-padding-x) var(--space-24) var(--space-8);

  display: flex;
  align-items: flex-start;

  background: var(--color-bg-body);
}

.product-detail__summary-inner {
  width: 100%;
  max-width: 460px;
}

/* =========================================
   META
========================================= */

.product-detail__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);

  margin-bottom: var(--space-4);
}

.product-detail__brand,
.product-detail__category {
  color: var(--color-text-muted);

  font-size: var(--text-fluid-2xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-snug);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  text-decoration: none;
}

.product-detail__brand:hover,
.product-detail__category:hover {
  color: var(--color-text-primary);
}

/* =========================================
   TITLE
========================================= */

.product-detail__title {
  margin: 0;

  color: var(--color-text-primary);

  font-size: var(--text-fluid-lg);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.product-detail__variant-name {
  margin-top: var(--space-3);

  color: var(--color-text-muted);

  font-size: var(--text-fluid-xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-snug);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

/* =========================================
   PRICE
========================================= */

.product-detail__price {
  margin-top: var(--space-6);

  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);

  color: var(--color-text-primary);

  font-size: var(--text-fluid-sm);
  line-height: var(--line-height-snug);
  letter-spacing: var(--tracking-wide);
}

.product-detail__price-old {
  color: var(--color-text-muted);
  opacity: var(--opacity-subtle);
  text-decoration: line-through;
}

.product-detail__price-new {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semi-bold);
}

.product-detail__discount {
  padding: var(--space-2);

  background: var(--color-black);
  color: var(--color-white);

  font-size: var(--text-fluid-2xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

/* =========================================
   BLOCK
========================================= */

.product-detail__block {
  margin-top: var(--space-8);
}

.product-detail__label {
  margin-bottom: var(--space-3);

  color: var(--color-text-muted);

  font-size: var(--text-fluid-2xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-snug);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
}

/* =========================================
   VARIANTS
========================================= */

.product-detail__variants {
  display: flex;
  align-items: center;
  gap: var(--space-3);

  overflow-x: auto;
  scrollbar-width: none;
}

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

.product-detail__variant {
  width: 64px;
  height: 80px;

  flex: 0 0 auto;

  border: var(--border-1) solid var(--color-border-soft);
  background: var(--color-surface-subtle);

  overflow: hidden;

  transition:
    border-color var(--duration-normal) var(--ease-smooth),
    opacity var(--duration-normal) var(--ease-smooth);
}

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

.product-detail__variant.is-active {
  border-color: var(--color-text-primary);
}

.product-detail__variant:hover {
  border-color: var(--color-border-strong-black);
}

/* =========================================
   SIZES
========================================= */

.product-detail__sizes {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
}

.product-detail__size {
  min-height: 44px;

  border: var(--border-1) solid var(--color-border-soft-black);
  background: transparent;
  color: var(--color-text-primary);

  font-size: var(--text-fluid-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;

  cursor: pointer;

  transition:
    border-color var(--duration-normal) var(--ease-smooth),
    color var(--duration-normal) var(--ease-smooth),
    opacity var(--duration-normal) var(--ease-smooth);
}

.product-detail__size:hover {
  border-color: var(--color-text-primary);
}

.product-detail__size.is-disabled,
.product-detail__size:disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
  text-decoration: line-through;
}

/* =========================================
   STOCK
========================================= */

.product-detail__stock {
  margin-top: var(--space-6);

  color: var(--color-text-muted);

  font-size: var(--text-fluid-2xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-snug);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
}

/* =========================================
   ACTIONS
========================================= */

.product-detail__actions {
  margin-top: var(--space-6);

  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.product-detail__cta,
.product-detail__secondary {
  width: 100%;
  min-height: var(--btn-height-lg);

  border: var(--border-1) solid var(--color-text-primary);

  font-size: var(--text-fluid-xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-snug);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;

  cursor: pointer;

  transition:
    background-color var(--duration-normal) var(--ease-smooth),
    color var(--duration-normal) var(--ease-smooth),
    border-color var(--duration-normal) var(--ease-smooth);
}

.product-detail__cta {
  background: var(--color-black);
  color: var(--color-white);
}

.product-detail__cta:hover {
  background: var(--color-neutral-800);
}

.product-detail__secondary {
  background: transparent;
  color: var(--color-text-primary);
}

.product-detail__secondary:hover {
  background: var(--color-surface-soft);
}

/* =========================================
   DESCRIPTION
========================================= */

.product-detail__description {
  margin-top: var(--space-8);

  max-width: 420px;

  color: var(--color-text-muted);

  font-size: var(--text-fluid-xs);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

/* =========================================
   FULLSCREEN GALLERY MODAL
========================================= */

.product-gallery-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);

  background: var(--color-bg-body);

  opacity: 0;
  visibility: hidden;
  pointer-events: none;

  transition:
    opacity var(--duration-slow) var(--ease-smooth),
    visibility var(--duration-slow) var(--ease-smooth);
}

.product-gallery-modal.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.product-gallery-modal__close {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: var(--z-max);

  width: 40px;
  height: 40px;

  border: 0;
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);

  font-size: var(--text-fluid-lg);
  line-height: 1;

  cursor: pointer;
}

.product-gallery-modal__track {
  width: 100%;
  height: 100%;

  overflow-y: auto;
  scroll-snap-type: y mandatory;
}

.product-gallery-modal__item {
  width: 100%;
  min-height: 100vh;

  display: flex;
  align-items: center;
  justify-content: center;

  scroll-snap-align: start;
  background: var(--color-bg-body);
}

.product-gallery-modal__item img {
  width: 100%;
  height: 100vh;
  object-fit: contain;
  display: block;
}

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

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

  .product-detail__gallery {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
    padding-bottom: var(--space-8);
  }

  .product-detail__summary {
    position: relative;
    top: auto;
    height: auto;

    padding: var(--space-4) var(--space-6) var(--space-24);
  }

  .product-detail__summary-inner {
    max-width: none;
  }
}

@media (max-width: 768px) {
  .product-detail-page {
    padding-top: var(--header-height-mobile);
  }

  .product-detail__gallery {
    padding: var(--space-4) var(--panel-padding-x-mobile) 0;
  }

  .product-detail__media {
    aspect-ratio: 4 / 5;
  }

  .product-detail__media--extra {
    display: none;
  }

  .product-detail__summary {
    padding: var(--space-5) var(--panel-padding-x-mobile) var(--space-20);
  }

  .product-detail__meta {
    margin-bottom: var(--space-3);
  }

  .product-detail__title {
    font-size: var(--text-fluid-md);
  }

  .product-detail__sizes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .product-detail__cta,
  .product-detail__secondary {
    min-height: var(--btn-height-md);
  }

  .product-gallery-modal__close {
    top: var(--space-4);
    right: var(--space-4);
  }
}

@media (max-width: 420px) {
  .product-detail__sizes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-detail__variant {
    width: 56px;
    height: 72px;
  }
}