/* Product page layout */
.product-page {
  padding: var(--space-5) 0 var(--space-10);
}
.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: flex-start;
}

/* Gallery */
.product-gallery { position: sticky; top: calc(var(--nav-height) + var(--space-3)); }
.product-main-img {
  background: var(--clr-gray-50);
  aspect-ratio: 4/5;
  overflow: hidden;
  margin-bottom: var(--space-2);
  cursor: zoom-in;
}
.product-main-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 350ms ease, opacity 0.3s ease;
}
.product-thumbnails {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
}
.product-thumb {
  background: var(--clr-gray-50);
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--ease);
}
.product-thumb.active { border-color: var(--clr-black); }
.product-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: opacity var(--ease);
}
.product-thumb:hover img { opacity: 0.8; }

/* Product info */
.product-info { padding-top: var(--space-2); }
.product-tags {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.product-tag {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--clr-gray-500);
}
.product-tag + .product-tag::before {
  content: '·';
  margin-right: var(--space-2);
}
.product-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.05;
  margin-bottom: var(--space-3);
}
.product-price {
  font-size: var(--text-xl);
  font-weight: 400;
  margin-bottom: var(--space-5);
}

.product-price-sale { color: #cc0000; font-weight: 600; margin-right: 8px; }
.product-price-orig { color: var(--clr-gray-500); font-size: var(--text-base); text-decoration: line-through; }

/* Color selector */
.option-group { margin-bottom: var(--space-4); }
.option-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.color-swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.color-swatch {
  width: 28px; height: 28px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  transition: transform var(--ease);
}
.color-swatch:hover { transform: scale(1.1); }
.color-swatch.active {
  border-color: var(--clr-black);
  outline: 2px solid var(--clr-white);
  outline-offset: -4px;
}

/* Size selector */
.size-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}
.size-guide-link {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  text-decoration: underline;
  text-underline-offset: 2px;
  color: var(--clr-gray-500);
  cursor: pointer;
}
.size-guide-link:hover { color: var(--clr-black); }
.size-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.size-btn {
  min-width: 52px;
  height: 42px;
  padding: 0 10px;
  border: 1px solid var(--clr-gray-200);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: var(--tracking-normal);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
  background: var(--clr-white);
}
.size-btn:hover:not(.unavailable) {
  border-color: var(--clr-black);
}
.size-btn.active {
  background: var(--clr-black);
  color: var(--clr-white);
  border-color: var(--clr-black);
}
.size-btn.unavailable {
  color: #cccccc;
  border-color: #ebebeb;
  cursor: not-allowed;
  position: relative;
  pointer-events: none;
}
.size-btn.unavailable::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: #cccccc;
  transform: rotate(-45deg);
}

/* Quantity */
.qty-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  align-items: center;
}
.qty-stepper {
  display: flex;
  align-items: center;
  border: 1px solid var(--clr-gray-200);
  height: 44px;
  width: fit-content;
}
.qty-btn {
  width: 40px; height: 100%;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: none;
  border: none;
  color: var(--clr-black);
  transition: background var(--ease);
}
.qty-btn:hover { background: var(--clr-gray-50); }
.qty-val {
  width: 44px;
  text-align: center;
  font-size: var(--text-base);
  border: none;
  outline: none;
  border-left: 1px solid var(--clr-gray-200);
  border-right: 1px solid var(--clr-gray-200);
  padding: 0;
  height: 100%;
  -moz-appearance: textfield;
}
.qty-val::-webkit-inner-spin-button,
.qty-val::-webkit-outer-spin-button { display: none; }

/* Action buttons */
.btn-add-cart {
  width: 100%;
  height: 50px;
  border: 1.5px solid var(--clr-black);
  background: var(--clr-white);
  color: var(--clr-black);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
  transition: background var(--ease), color var(--ease);
}
.btn-add-cart:hover {
  background: var(--clr-black);
  color: var(--clr-white);
}
.btn-add-cart.btn-disabled,
.btn-add-cart:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  background: var(--clr-gray-100);
  border-color: var(--clr-gray-300);
  color: var(--clr-gray-500);
}
.btn-add-cart.btn-disabled:hover,
.btn-add-cart:disabled:hover {
  background: var(--clr-gray-100);
  color: var(--clr-gray-500);
}
.btn-buy-now {
  width: 100%;
  height: 50px;
  background: var(--clr-black);
  color: var(--clr-white);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: var(--space-5);
  transition: background var(--ease);
}
.btn-buy-now:hover { background: var(--clr-gray-800); }

/* Description */
.product-desc-toggle {
  border-top: 1px solid var(--clr-gray-200);
  padding-top: var(--space-3);
}
.product-desc-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.product-desc-text {
  font-size: var(--text-base);
  font-weight: 300;
  color: var(--clr-gray-700);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}
.product-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.product-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--clr-gray-700);
}
.feature-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--clr-black);
  flex-shrink: 0;
}

/* Related products */
.related-section {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--clr-gray-200);
  margin-top: var(--space-8);
}
.related-title {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
}

/* Size guide modal */
.size-guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.size-guide-table th,
.size-guide-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--clr-gray-200);
  letter-spacing: var(--tracking-normal);
}
.size-guide-table th {
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

@media (max-width: 900px) {
  .product-layout { grid-template-columns: 1fr; gap: var(--space-5); }
  .product-gallery { position: static; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .qty-row { grid-template-columns: 1fr; }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   Lightbox
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.lbox {
  position: fixed; inset: 0; z-index: 9999;
  display: none;
}
.lbox--open { display: flex; }
.lbox--open .lbox-bg   { animation: lboxIn 300ms ease forwards; }
.lbox--open .lbox-wrap { animation: lboxIn 300ms ease forwards; }
.lbox--closing .lbox-bg   { animation: lboxOut 300ms ease forwards; }
.lbox--closing .lbox-wrap { animation: lboxOut 300ms ease forwards; }
@keyframes lboxIn  { from { opacity: 0 } to { opacity: 1 } }
@keyframes lboxOut { from { opacity: 1 } to { opacity: 0 } }

.lbox-bg {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.95);
}

.lbox-wrap {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  width: 100%; height: 100%;
  padding: 60px 0 24px;
  box-sizing: border-box;
}

.lbox-close {
  position: absolute; top: 20px; right: 24px;
  background: none; border: none;
  color: #fff; opacity: 0.55;
  font-size: 13px; letter-spacing: 0.14em;
  cursor: pointer; padding: 8px;
  transition: opacity 200ms;
  font-family: inherit;
}
.lbox-close:hover { opacity: 1; }

.lbox-stage {
  display: flex; align-items: center;
  gap: 20px;
  width: 100%; max-width: 860px;
  padding: 0 16px;
  box-sizing: border-box;
  flex: 1; min-height: 0;
}

.lbox-frame {
  flex: 1; min-width: 0;
  aspect-ratio: 4/5;
  max-height: 72vh;
  overflow: hidden;
  margin: 0 auto;
}

.lbox-img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 1;
  transition: opacity 150ms ease;
  display: block;
}
.lbox-img.fading { opacity: 0; }

.lbox-prev, .lbox-next {
  background: none; border: none;
  color: #fff; opacity: 0.4;
  font-size: 24px; line-height: 1;
  cursor: pointer; padding: 16px 6px;
  transition: opacity 200ms;
  flex-shrink: 0;
  user-select: none;
}
.lbox-prev:hover, .lbox-next:hover { opacity: 1; }

.lbox-footer {
  display: flex; flex-direction: column;
  align-items: center; gap: 12px;
  margin-top: 18px; flex-shrink: 0;
  width: 100%; max-width: 860px;
  padding: 0 16px;
  box-sizing: border-box;
}

.lbox-count {
  font-size: 10px; letter-spacing: 0.18em;
  color: rgba(255,255,255,0.35);
  font-family: inherit;
  user-select: none;
}

.lbox-lines { display: flex; gap: 7px; align-items: center; }
.lbox-line {
  width: 28px; height: 1px;
  background: rgba(255,255,255,0.22);
  transition: background 250ms ease, width 250ms ease;
}
.lbox-line.active { background: #fff; width: 36px; }

.lbox-thumbs {
  display: flex; gap: 5px;
  overflow-x: auto;
  scrollbar-width: none;
  max-width: 100%;
  padding-bottom: 2px;
}
.lbox-thumbs::-webkit-scrollbar { display: none; }

.lbox-thumb {
  width: 42px; height: 52px;
  object-fit: cover;
  flex-shrink: 0;
  opacity: 0.35;
  cursor: pointer;
  transition: opacity 250ms ease;
  outline: 1px solid transparent;
  outline-offset: 2px;
}
.lbox-thumb:hover { opacity: 0.65; }
.lbox-thumb.active {
  opacity: 1;
  outline-color: rgba(255,255,255,0.85);
}

@media (max-width: 600px) {
  .lbox-stage { gap: 10px; padding: 0 8px; }
  .lbox-prev, .lbox-next { font-size: 20px; padding: 12px 4px; }
  .lbox-frame { max-height: 62vh; }
  .lbox-thumb { width: 34px; height: 42px; }
  .lbox-close { top: 12px; right: 14px; }
  .lbox-wrap { padding: 50px 0 16px; }
}