/**
 * skeleton.css — Skeleton loaders para grids de enciclopedias
 * Se incluye en las páginas con datasets grandes.
 * El JS sobreescribe el contenido del grid al cargar, eliminando los skeletons.
 */

@keyframes skeleton-pulse {
  0%   { opacity: 1; }
  50%  { opacity: 0.45; }
  100% { opacity: 1; }
}

.skeleton-card {
  background: linear-gradient(180deg, rgba(21,34,56,0.9), rgba(14,24,40,0.9));
  border: 1px solid rgba(70, 92, 122, 0.3);
  border-radius: 14px;
  padding: 14px;
  animation: skeleton-pulse 1.6s ease-in-out infinite;
  overflow: hidden;
}

.skeleton-img {
  width: 100%;
  aspect-ratio: 1;
  background: rgba(255,255,255,0.06);
  border-radius: 10px;
  margin-bottom: 12px;
}

.skeleton-line {
  height: 12px;
  border-radius: 6px;
  background: rgba(255,255,255,0.07);
  margin-bottom: 8px;
}
.skeleton-line.short  { width: 55%; }
.skeleton-line.medium { width: 75%; }
.skeleton-line.long   { width: 90%; }

/* Variante para grids de items (imagen cuadrada pequeña) */
.skeleton-item {
  display: flex;
  gap: 12px;
  align-items: center;
  background: rgba(21,34,56,0.85);
  border: 1px solid rgba(70,92,122,0.25);
  border-radius: 12px;
  padding: 12px 14px;
  animation: skeleton-pulse 1.6s ease-in-out infinite;
}
.skeleton-item-img {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 8px;
  background: rgba(255,255,255,0.07);
}
.skeleton-item-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 7px;
}