/* ============================================================
   Single Product (PDP) — single-product.php
   ============================================================ */

/* Trust card "Fabricación certificada" en sidebar PDP — N° de resolución
   visible para due-diligence B2B, icono shield-check verde corporativo. */
.mk-pdp-trust {
  display: flex;
  align-items: flex-start;
  gap: var(--mk-sp-3);
  background: var(--mk-green-100);
  border-left: 3px solid var(--mk-green-700);
}

.mk-pdp-trust__icon {
  color: var(--mk-green-700);
  flex-shrink: 0;
  margin-top: 2px;
}

.mk-pdp-trust__body { min-width: 0; }

.mk-pdp-trust h3 {
  font-size: var(--mk-text-sm);
  margin: 0 0 4px;
  color: var(--mk-green-800);
  font-family: var(--mk-font-display);
}

.mk-pdp-trust p {
  font-size: var(--mk-text-xs);
  line-height: 1.5;
  color: var(--mk-ink-700);
  margin: 0;
}

.mk-pdp-trust strong {
  color: var(--mk-ink-900);
  font-variant-numeric: tabular-nums;
}

.mk-product { padding: var(--mk-sp-6) 0 var(--mk-sp-8); }

/* ---------- Above-the-fold ---------- */

.mk-product-above {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--mk-sp-6);
  margin-top: var(--mk-sp-5);
}

@media (min-width: 1024px) {
  .mk-product-above {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: var(--mk-sp-7);
  }
}

/* Galería */
.mk-product-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--mk-sp-3);
}

.mk-gallery-main {
  position: relative;
  aspect-ratio: 1;
  background: #fff;
  border: 1px solid var(--mk-bg-soft);
  border-radius: var(--mk-radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--mk-sp-4);
}

.mk-gallery-main img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.mk-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--mk-sp-2);
}

.mk-gallery-thumb {
  background: #fff;
  border: 2px solid var(--mk-bg-soft);
  border-radius: var(--mk-radius);
  padding: 4px;
  cursor: pointer;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--mk-trans);
}

.mk-gallery-thumb:hover { border-color: var(--mk-gold-300); }
.mk-gallery-thumb.is-active { border-color: var(--mk-gold-500); }
.mk-gallery-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

/* Decisión derecha */
.mk-product-decision {
  display: flex;
  flex-direction: column;
  gap: var(--mk-sp-4);
}

.mk-product-title {
  font-size: clamp(22px, 3vw, 32px);
  margin: 0;
  line-height: 1.2;
}

.mk-product-short {
  margin: 0;
  color: var(--mk-ink-700);
  font-size: var(--mk-text-md);
  line-height: 1.5;
}

.mk-product-meta {
  display: flex;
  align-items: baseline;
  gap: var(--mk-sp-2);
  font-size: var(--mk-text-sm);
}

.mk-product-meta__label {
  color: var(--mk-ink-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--mk-text-xs);
}

.mk-product-meta__sku {
  font-variant-numeric: tabular-nums;
  color: var(--mk-ink-900);
  font-size: var(--mk-text-md);
  font-weight: 700;
}

/* ---------- Selector de variaciones (zona crítica) ---------- */

.mk-variation-block {
  border: 2px solid var(--mk-gold-500);
  border-radius: var(--mk-radius);
  padding: var(--mk-sp-4);
  background: var(--mk-gold-100);
  position: relative;
}

.mk-variation-block::before {
  content: "Selector de presentación";
  position: absolute;
  top: -10px;
  left: var(--mk-sp-3);
  background: var(--mk-gold-500);
  color: var(--mk-ink-900);
  padding: 2px 10px;
  font-family: var(--mk-font-display);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 3px;
}

.mk-variation-title {
  font-size: var(--mk-text-md);
  margin: 0 0 var(--mk-sp-3);
  color: var(--mk-ink-900);
}

.mk-variation-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mk-variation-row {
  display: grid;
  grid-template-columns: 32px minmax(80px, 1.2fr) 100px 70px minmax(80px, 1fr) auto;
  gap: var(--mk-sp-3);
  align-items: center;
  padding: var(--mk-sp-2) var(--mk-sp-3);
  background: #fff;
  border: 1px solid var(--mk-bg-soft);
  border-radius: var(--mk-radius);
  cursor: pointer;
  transition: all var(--mk-trans);
  font-size: var(--mk-text-sm);
}

.mk-variation-row:hover {
  border-color: var(--mk-gold-300);
  background: #fffdf6;
}

.mk-variation-row.is-selected {
  border-color: var(--mk-green-700);
  background: #fff;
  box-shadow: 0 0 0 1px var(--mk-green-700) inset;
}

.mk-variation-row input[type="radio"] {
  margin: 0;
  accent-color: var(--mk-green-700);
  width: 18px;
  height: 18px;
}

.mk-variation-row__name {
  font-weight: 700;
  color: var(--mk-ink-900);
  font-family: var(--mk-font-display);
}

.mk-variation-row__sku {
  color: var(--mk-ink-500);
  font-size: var(--mk-text-xs);
  font-variant-numeric: tabular-nums;
}

.mk-variation-row__weight {
  color: var(--mk-ink-700);
  font-size: var(--mk-text-xs);
  font-variant-numeric: tabular-nums;
}

.mk-variation-row__price {
  color: var(--mk-green-800);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.mk-variation-row__stock {
  font-size: var(--mk-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: right;
  white-space: nowrap;
}

.mk-variation-row__stock.is-in   { color: var(--mk-green-700); }
.mk-variation-row__stock.is-low  { color: #8a6d10; }
.mk-variation-row__stock.is-back { color: var(--mk-gold-700); }
.mk-variation-row__stock.is-out  { color: #9b3022; }

@media (max-width: 599px) {
  .mk-variation-row {
    grid-template-columns: 24px 1fr auto;
    grid-template-areas:
      "radio name  price"
      "radio sku   stock"
      "radio weight weight";
    gap: 4px var(--mk-sp-2);
  }
  .mk-variation-row input[type="radio"] { grid-area: radio; }
  .mk-variation-row__name   { grid-area: name; }
  .mk-variation-row__sku    { grid-area: sku; }
  .mk-variation-row__weight { grid-area: weight; }
  .mk-variation-row__price  { grid-area: price; text-align: right; }
  .mk-variation-row__stock  { grid-area: stock; text-align: right; }
}

/* ---------- Estado dinámico (precio + stock) debajo del selector ---------- */

.mk-product-state {
  display: flex;
  flex-direction: column;
  gap: var(--mk-sp-2);
  padding: var(--mk-sp-4) 0;
  border-top: 1px solid var(--mk-bg-soft);
  border-bottom: 1px solid var(--mk-bg-soft);
}

.mk-product-price {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--mk-green-800);
  font-family: var(--mk-font-display);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.mk-product-stock-line {
  font-size: var(--mk-text-sm);
  color: var(--mk-ink-700);
  display: flex;
  align-items: center;
  gap: var(--mk-sp-2);
  flex-wrap: wrap;
}

.mk-product-stock-line .mk-muted { font-size: var(--mk-text-sm); }

/* ---------- Carrito ---------- */

.mk-product-cart {
  display: flex;
  flex-direction: column;
  gap: var(--mk-sp-3);
}

.mk-product-cart__form {
  display: flex;
  align-items: stretch;
  gap: var(--mk-sp-3);
}

.mk-product-cart__qty {
  width: 80px;
  padding: var(--mk-sp-3);
  font-size: var(--mk-text-md);
  border: 2px solid var(--mk-bg-soft);
  border-radius: var(--mk-radius);
  background: #fff;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.mk-product-cart__qty:focus {
  outline: none;
  border-color: var(--mk-green-700);
}

.mk-product-cart__cta {
  flex: 1;
  font-size: var(--mk-text-md);
  padding: var(--mk-sp-3) var(--mk-sp-5);
}

.mk-product-cart__alt {
  font-size: var(--mk-text-sm);
  color: var(--mk-ink-500);
  text-decoration: none;
}

.mk-product-cart__alt:hover { color: var(--mk-green-700); }

/* ---------- Below-the-fold ---------- */

.mk-product-below {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--mk-sp-6);
  margin-top: var(--mk-sp-7);
}

@media (min-width: 1024px) {
  .mk-product-below {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr);
    gap: var(--mk-sp-7);
  }
}

.mk-product-content { min-width: 0; }

.mk-product-section { margin-bottom: var(--mk-sp-6); }

.mk-product-section h2 {
  font-size: var(--mk-text-xl);
  margin-bottom: var(--mk-sp-3);
  position: relative;
  padding-bottom: var(--mk-sp-2);
}

.mk-product-section h2::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--mk-gold-500);
  margin-top: var(--mk-sp-2);
}

.mk-rich-text p { margin: 0 0 var(--mk-sp-3); line-height: 1.6; }
.mk-rich-text ul, .mk-rich-text ol { margin: 0 0 var(--mk-sp-3) var(--mk-sp-5); }
.mk-rich-text strong { color: var(--mk-ink-900); }

/* Chips de aplicaciones */
.mk-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--mk-sp-2);
}

.mk-chip {
  display: inline-block;
  padding: 4px 12px;
  background: var(--mk-bg-alt);
  color: var(--mk-ink-700);
  font-size: var(--mk-text-sm);
  border-radius: 999px;
  border: 1px solid var(--mk-bg-soft);
}

/* Precauciones */
.mk-product-section--warn {
  background: #fff8e8;
  border-left: 4px solid var(--mk-gold-500);
  padding: var(--mk-sp-4) var(--mk-sp-5);
  border-radius: var(--mk-radius);
}

.mk-product-section--warn h2 { color: var(--mk-gold-700); }
.mk-product-section--warn h2::after { display: none; }

.mk-warn-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mk-warn-list li {
  position: relative;
  padding: 4px 0 4px 24px;
  font-size: var(--mk-text-sm);
  color: var(--mk-ink-900);
}

.mk-warn-list li::before {
  content: "⚠";
  position: absolute;
  left: 0;
  color: var(--mk-gold-700);
}

/* ---------- Sidebar ---------- */

.mk-product-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--mk-sp-4);
}

.mk-pdp-card {
  background: #fff;
  border: 1px solid var(--mk-bg-soft);
  border-radius: var(--mk-radius);
  padding: var(--mk-sp-5);
}

.mk-pdp-card h3 {
  font-size: var(--mk-text-md);
  margin: 0 0 var(--mk-sp-3);
  color: var(--mk-green-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  font-family: var(--mk-font-display);
}

.mk-pdp-docs .mk-btn { margin-bottom: var(--mk-sp-2); }
.mk-pdp-docs .mk-btn:last-child { margin-bottom: 0; }

.mk-pdp-docs__note {
  font-size: var(--mk-text-xs);
  margin: var(--mk-sp-3) 0 0;
}

.mk-pdp-help { background: var(--mk-green-100); border-color: var(--mk-green-300); }

/* Tabla técnica */
.mk-tech-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--mk-text-sm);
}

.mk-tech-table tr { border-bottom: 1px solid var(--mk-bg-soft); }
.mk-tech-table tr:last-child { border-bottom: 0; }

.mk-tech-table th {
  text-align: left;
  padding: var(--mk-sp-2) var(--mk-sp-2) var(--mk-sp-2) 0;
  font-weight: 500;
  color: var(--mk-ink-500);
  width: 50%;
  vertical-align: top;
}

.mk-tech-table td {
  padding: var(--mk-sp-2) 0;
  color: var(--mk-ink-900);
  font-weight: 600;
  vertical-align: top;
}

/* ---------- Productos relacionados ---------- */

.mk-product-related {
  margin-top: var(--mk-sp-8);
  padding-top: var(--mk-sp-7);
  border-top: 1px solid var(--mk-bg-soft);
}

/* Pill stock — replica de listing.css para que sea consistente.
   (listing.css no se carga en single-product). */
.mk-stock-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: var(--mk-text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.mk-stock-pill.is-in   { background: var(--mk-green-100); color: var(--mk-green-800); }
.mk-stock-pill.is-low  { background: #fff5d6;             color: #8a6d10; }
.mk-stock-pill.is-back { background: var(--mk-gold-100);  color: var(--mk-gold-700); }
.mk-stock-pill.is-out  { background: #f4dad6;             color: #9b3022; }

/* A11y helper (replicado del listing) */
.mk-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}