/* ── PRODUCT PAGE ─────────────────────────────────────── */
.product-page { padding-top: 80px; min-height: 100vh; background: var(--black); }

.product-breadcrumb {
  background: var(--black-card);
  border-bottom: 1px solid var(--black-border);
  padding: .75rem 0;
  font-family: var(--font-ui);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--text-dim);
}
.product-breadcrumb a { color: var(--text-muted); transition: color var(--tr-fast); }
.product-breadcrumb a:hover { color: var(--red); }
.product-breadcrumb span { margin: 0 .4rem; }

/* Loading skeleton */
.product-loading { padding: 4rem 0; }
.skeleton-product { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.skeleton { background: var(--black-surface); border-radius: var(--r-md); animation: shimmer 1.4s infinite; }
.skeleton--img { aspect-ratio: 1/1; }
.skeleton--title { height: 2.5rem; margin-bottom: 1rem; }
.skeleton--line { height: 1rem; margin-bottom: .75rem; border-radius: 4px; }
.skeleton-info { display: flex; flex-direction: column; gap: .5rem; padding-top: 1rem; }
.w40 { width: 40%; }
.w60 { width: 60%; }
.w80 { width: 80%; }
@keyframes shimmer {
  0%,100% { opacity: .4; }
  50%      { opacity: .8; }
}

/* Product detail layout */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  padding-top: 3rem;
  padding-bottom: 5rem;
  align-items: start;
}

/* Gallery */
.product-detail__gallery { position: sticky; top: 100px; }
.gallery__main {
  aspect-ratio: 1/1;
  overflow: hidden;
  background: var(--black-mid);
  border: 1px solid var(--black-border);
  border-radius: var(--r-md);
}
.gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.gallery__main img:hover { transform: scale(1.04); }
.gallery__thumbs {
  display: flex;
  gap: .5rem;
  margin-top: .75rem;
  flex-wrap: wrap;
}
.gallery__thumb {
  width: 72px;
  height: 72px;
  overflow: hidden;
  border: 2px solid var(--black-border);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color var(--tr-fast);
  background: none;
  padding: 0;
}
.gallery__thumb.is-active { border-color: var(--red); }
.gallery__thumb img { width: 100%; height: 100%; object-fit: cover; }

/* Info */
.product-detail__meta { display: flex; gap: .75rem; align-items: center; margin-bottom: .75rem; }
.product-detail__state {
  font-family: var(--font-ui);
  font-size: .55rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--white);
  padding: .3rem .7rem;
  border-radius: var(--r-sm);
}
.product-detail__state--nuevo    { background: var(--state-nuevo); }
.product-detail__state--revisado { background: var(--state-revisado); }
.product-detail__state--usado    { background: var(--state-usado); }
.product-detail__category {
  font-family: var(--font-ui);
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--black-border);
  padding: .3rem .6rem;
  border-radius: var(--r-sm);
}
.product-detail__brand {
  font-family: var(--font-ui);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: .35rem;
}
.product-detail__name {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: .04em;
  color: var(--white);
  line-height: 1.05;
  margin-bottom: 1rem;
}
.product-detail__price-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.product-detail__price {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--red-bright);
  letter-spacing: .04em;
}
.product-detail__desc {
  font-family: var(--font-body);
  font-size: .95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 2rem;
}
.product-detail__section-title {
  font-family: var(--font-ui);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: .75rem;
}
.product-detail__includes { margin-bottom: 1.5rem; }
.product-detail__includes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}
.product-detail__includes-list li {
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
}
.product-detail__includes-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--red);
  font-size: .8rem;
}
.product-detail__specs { margin-bottom: 2rem; }
.product-detail__specs-grid { display: flex; flex-direction: column; gap: 0; border: 1px solid var(--black-border); border-radius: var(--r-md); overflow: hidden; }
.spec-row {
  display: flex;
  align-items: center;
  padding: .65rem 1rem;
  border-bottom: 1px solid var(--black-border);
  gap: 1rem;
}
.spec-row:last-child { border-bottom: none; }
.spec-key {
  font-family: var(--font-ui);
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
  min-width: 120px;
}
.spec-val {
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--text-muted);
}
.product-detail__actions {
  display: flex;
  gap: .75rem;
  align-items: center;
  flex-wrap: wrap;
}
.product-detail__btns {
  display: flex;
  flex-direction: row;
  gap: .75rem;
  flex: 1;
}
.btn--buy-now {
  background: transparent;
  border: 2px solid var(--red);
  color: var(--red);
  font-family: var(--font-ui);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  padding: .75rem 1.25rem;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background var(--tr-fast), color var(--tr-fast);
  text-align: center;
  flex: 1;
}
.btn--buy-now:hover {
  background: var(--red);
  color: #fff;
}
.product-detail__qty {
  display: flex;
  align-items: center;
  border: 1px solid var(--black-border);
  border-radius: var(--r-sm);
  overflow: hidden;
}
.product-detail__out {
  padding: 2rem;
  border: 1px solid var(--black-border);
  border-radius: var(--r-md);
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-ui);
}

/* Error box */
.product-error { padding: 6rem 0; text-align: center; }
.error-box__title {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Btn outline */
.btn--outline {
  background: transparent;
  border: 1px solid var(--black-border);
  color: var(--text-muted);
}
.btn--outline:hover { border-color: var(--red); color: var(--red); }

/* Stock badges */
.stock-badge {
  font-family: var(--font-ui);
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: .3rem .7rem;
  border-radius: var(--r-sm);
  display: inline-block;
}
.stock-badge--low { background: rgba(255,152,0,.15); color: #FF9800; border: 1px solid rgba(255,152,0,.3); }
.stock-badge--out { background: rgba(204,0,0,.15); color: var(--red-bright); border: 1px solid rgba(204,0,0,.3); }

/* Responsive */
@media (max-width: 768px) {
  .product-detail { grid-template-columns: 1fr; gap: 2rem; }
  .product-detail__gallery { position: static; }
  .skeleton-product { grid-template-columns: 1fr; }
}