/**
 * product.css — Página de detalle de producto
 * Mobile-First, extiende main.css
 */

/* ══════════════════════════════════════════════════════════
   PRODUCT PAGE WRAPPER
══════════════════════════════════════════════════════════ */
.product-page {
  padding-top: calc(80px + var(--space-8));
  padding-bottom: var(--space-16);
}

/* ══════════════════════════════════════════════════════════
   PRODUCT LAYOUT (2 columnas en desktop)
══════════════════════════════════════════════════════════ */
.product-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-top: var(--space-6);
}

@media (min-width: 768px) {
  .product-layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .product-layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-16);
  }
}

/* ══════════════════════════════════════════════════════════
   GALERÍA
══════════════════════════════════════════════════════════ */
.product-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Imagen principal */
.gallery-main {
  position: relative;
  aspect-ratio: 3/4;
  background: var(--color-dark-mid);
  border-radius: var(--radius-lg);
  overflow: hidden;
  /* 3D Tilt engine */
  will-change: transform, box-shadow;
  cursor: crosshair;
  transition: box-shadow 0.4s ease, transform 0.08s linear;
  transform: perspective(900px) rotateX(0deg) rotateY(0deg) scale3d(1,1,1);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.gallery-main__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Desactivamos transition cuando el tilt activo maneja el transform */
  transition: transform var(--transition-slow), opacity 150ms ease;
}

/* Hover-scale básico desactivado cuando el tilt está activo */
.gallery-main:not(.tilt-active):hover .gallery-main__img { transform: scale(1.03); }

/* ── FLOATING / LEVITATION ──────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .gallery-main__img {
    animation: productFloat 4.5s ease-in-out infinite;
  }
  /* Pausa la levitación mientras el tilt está activo */
  .gallery-main.tilt-active .gallery-main__img {
    animation-play-state: paused;
  }
}

@keyframes productFloat {
  0%, 100% { transform: translateY(0px) scale(1); }
  50%       { transform: translateY(-12px) scale(1.015); }
}

/* ── GLARE OVERLAY (destello 3D) ────────────────────────── */
.gallery-main::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    circle at var(--glare-x, 50%) var(--glare-y, 50%),
    rgba(255,255,255,0.12) 0%,
    transparent 60%
  );
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 2;
}
.gallery-main.tilt-active::after { opacity: 1; }

/* Badges sobre la imagen */
.gallery-badge {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.gallery-badge--sale { background: var(--color-accent); color: var(--color-black); }
.gallery-badge--sold { background: rgba(0,0,0,0.6); color: var(--color-gray-300); border: 1px solid var(--border-color); }

/* Miniaturas */
.gallery-thumbs {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.gallery-thumb {
  width: 72px;
  height: 96px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition-fast), opacity var(--transition-fast);
  flex-shrink: 0;
  padding: 0;
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumb:hover { border-color: rgba(255,255,255,0.3); }
.gallery-thumb--active { border-color: var(--color-accent); }
.gallery-thumb:not(.gallery-thumb--active) { opacity: 0.65; }

/* ══════════════════════════════════════════════════════════
   INFO DE PRODUCTO
══════════════════════════════════════════════════════════ */
.product-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .product-info {
    position: sticky;
    top: 100px;
  }
}

.product-info__category {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  transition: opacity var(--transition-fast);
}

.product-info__category:hover { opacity: 0.75; }

.product-info__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 600;
  line-height: var(--leading-tight);
  color: var(--color-white);
}

/* Precios */
.product-info__prices {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.price-current {
  font-size: var(--text-3xl);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
}

.price-compare {
  font-size: var(--text-lg);
  color: var(--color-gray-700);
  text-decoration: line-through;
}

.price-save {
  font-size: var(--text-sm);
  color: var(--color-success);
  font-weight: var(--weight-medium);
  background: rgba(45,122,79,0.12);
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
}

/* Descripción corta */
.product-info__short-desc {
  font-size: var(--text-base);
  color: var(--color-gray-300);
  line-height: var(--leading-relaxed);
}

/* Stock indicator */
.product-info__stock {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.stock-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.stock-dot--in  { background: var(--color-success); box-shadow: 0 0 6px var(--color-success); }
.stock-dot--low { background: var(--color-warning);  box-shadow: 0 0 6px var(--color-warning); }
.stock-dot--out { background: var(--color-gray-700); }

.product-info__stock--in  { color: #5acea0; }
.product-info__stock--out { color: var(--color-gray-500); }

/* ── Control de cantidad + CTA ── */
.product-actions {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  flex-wrap: wrap;
}

.qty-control {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--color-dark-mid);
}

.qty-btn {
  width: 40px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-lg);
  color: var(--color-gray-300);
  transition: background var(--transition-fast), color var(--transition-fast);
  user-select: none;
}

.qty-btn:hover { background: rgba(255,255,255,0.08); color: var(--color-white); }
.qty-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.qty-input {
  width: 48px;
  text-align: center;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-white);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  -moz-appearance: textfield;
}

.qty-input::-webkit-inner-spin-button,
.qty-input::-webkit-outer-spin-button { -webkit-appearance: none; }

.add-to-cart-main {
  flex: 1;
  min-width: 180px;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
}

.add-to-cart-main.added {
  background: var(--color-success);
  border-color: var(--color-success);
}

/* ── Descripción collapsible ── */
.product-desc {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-5);
}

.product-desc__toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  list-style: none;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-gray-300);
  padding-bottom: var(--space-4);
  user-select: none;
}

.product-desc__toggle::-webkit-details-marker { display: none; }

.product-desc__toggle::after {
  content: '+';
  font-size: var(--text-xl);
  font-weight: var(--weight-light);
  transition: transform var(--transition-fast);
}

details[open] .product-desc__toggle::after { transform: rotate(45deg); }

.product-desc__body {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
  line-height: var(--leading-relaxed);
  white-space: pre-line;
}

/* SKU */
.product-info__sku {
  font-size: var(--text-xs);
  color: var(--color-gray-700);
}

.product-info__sku span { color: var(--color-gray-500); }

/* ══════════════════════════════════════════════════════════
   SECCIÓN RELACIONADOS
══════════════════════════════════════════════════════════ */
.related {
  background: var(--color-dark);
  border-top: 1px solid var(--border-color);
}