/* Product detail — framed image + editorial description; related grid. */

.product-detail {
  background: var(--paper-050);
  padding-block: var(--space-section);
}

.product-detail__grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: clamp(2rem, 4vw, 5rem);
  align-items: start;
}

.product-detail__media {
  margin: 0;
  border: var(--border-strong);
  padding: var(--space-2);
  background: var(--paper-000);
  position: sticky;
  top: calc(84px + var(--space-6));
}
.product-detail__media img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.product-detail__title {
  margin-top: var(--space-4);
  font-size: var(--text-h2);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.product-detail__desc {
  margin-top: var(--space-5);
  color: var(--ink-700);
  max-width: var(--measure);
}
.product-detail__desc p { margin: 0 0 var(--space-4); max-width: none; }
.product-detail__desc ul { margin: 0 0 var(--space-4); padding-left: 1.25rem; }
.product-detail__desc li { margin-bottom: var(--space-2); }
.product-detail__desc :last-child { margin-bottom: 0; }

.product-detail__cta {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--border-strong);
}

/* ---- Related products ---- */
.related-section {
  background: var(--paper-000);
  border-top: var(--border-hairline);
  padding-block: var(--space-section);
}
.related-section__head { margin-bottom: var(--space-8); }

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-300);
  border: var(--border-strong);
}

.related-card {
  display: flex;
  flex-direction: column;
  background: var(--paper-000);
  min-width: 0;
}
.related-card__media {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--paper-100);
}
.related-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}
.related-card:hover .related-card__media img { transform: scale(1.05); }

.related-card__row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-top: var(--border-hairline);
  min-height: 62px;
}
.related-card__name {
  flex: 1;
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--ink-900);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card__row .circle-btn { width: 38px; height: 38px; }
.related-card:hover .circle-btn {
  background: var(--green-700);
  border-color: var(--green-700);
  color: #fff;
}

@media (max-width: 1024px) {
  .product-detail__grid { grid-template-columns: 1fr; }
  .product-detail__media { position: static; max-width: 560px; }
  .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
}