/*
   ==========================================================================
   COMPONENTE: Vista previa de fotos del catálogo
   ==========================================================================
   Botón "Vista previa" al pie de cada tarjeta de /catalogo (siempre
   presente, tenga 1 o varias fotos entre `products.image_url` +
   `product_images`, ver CLAUDE.md — el badge de cantidad solo aparece con
   más de una) y el modal flotante que abre al clickearlo. Mismo patrón de overlay que
   welcome-modal.css (fijo, backdrop-filter blur, .is-visible en
   transición), pero un único markup al pie del body reutilizado por todas
   las tarjetas — el script de catalogo.php lo puebla con las fotos de la
   tarjeta clickeada. z-index por encima del cart-panel (325) para que abrir
   la vista previa con el carrito abierto no quede tapado, y por debajo del
   welcome-modal (400).
   ========================================================================== */

.catalog-item-preview-btn {
  position: absolute;
  left: 0.5rem;
  bottom: 0.5rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.32rem 0.6rem;
  border: none;
  border-radius: 999px;
  background-color: rgba(27, 42, 24, 0.72);
  color: var(--color-text-light);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(2px);
  transition: background-color 0.18s ease, transform 0.18s ease;
}
.catalog-item-preview-btn:hover { background-color: rgba(27, 42, 24, 0.9); transform: translateY(-2px); }
.catalog-item-preview-btn svg { width: 0.95rem; height: 0.95rem; flex: none; }

.catalog-item-preview-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.05rem;
  height: 1.05rem;
  padding: 0 0.3rem;
  border-radius: 999px;
  background-color: rgba(255, 255, 255, 0.25);
  font-size: 0.65rem;
}

.preview-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 350;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background-color: rgba(27, 42, 24, 0.55);
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.preview-modal-overlay[hidden] { display: none; }
.preview-modal-overlay.is-visible { opacity: 1; }

.preview-modal-card {
  position: relative;
  width: 100%;
  max-width: 640px;
  max-height: calc(100vh - 2.5rem);
  overflow-y: auto;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1.1rem;
  transform: translateY(10px);
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.preview-modal-overlay.is-visible .preview-modal-card { transform: translateY(0); opacity: 1; }

.preview-modal-close {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  z-index: 2;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: none;
  background-color: rgba(255, 253, 247, 0.92);
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.preview-modal-close:hover { color: var(--color-accent); }
.preview-modal-close svg { width: 1rem; height: 1rem; }

.preview-modal-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-bg-main);
  margin-bottom: 0.85rem;
}
.preview-modal-image { width: 100%; height: 100%; object-fit: contain; }

.preview-modal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  border: none;
  background-color: rgba(255, 253, 247, 0.88);
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.preview-modal-nav:hover { background-color: #fff; }
.preview-modal-nav svg { width: 1.1rem; height: 1.1rem; }
.preview-modal-nav[hidden] { display: none; }
.preview-modal-prev { left: 0.6rem; }
.preview-modal-next { right: 0.6rem; }

.preview-modal-thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
}
.preview-modal-thumbs[hidden] { display: none; }
.preview-modal-thumb {
  flex: none;
  width: 2.6rem;
  height: 2.6rem;
  padding: 0;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.15s ease, border-color 0.15s ease;
}
.preview-modal-thumb:hover { opacity: 1; }
.preview-modal-thumb.is-active { border-color: var(--color-primary); opacity: 1; }
.preview-modal-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* --------------------------------------------------------------------------
   Desde tablet
   -------------------------------------------------------------------------- */
@media (min-width: 640px) {
  .preview-modal-card { padding: 1.75rem; }
}

@media (min-width: 980px) {
  .preview-modal-card { max-width: 860px; }
}