/* ============================================================================
   Guía de deslizamiento — componente compartido (ENCARGO-LIBRO-UX.md, regla 3)
   Aparece cuando un carrusel o rail horizontal entra en pantalla, invita a
   deslizar y se retira al primer gesto o a los 4 s. No estorba: es solo texto,
   aria-hidden, sin foco y sin capturar toques (pointer-events: none).
   El nodo se coloca con JS (assets/js/guia-deslizar.js) sobre el borde derecho
   del carrusel. Con movimiento reducido queda estático y tenue.
   ========================================================================== */

.guia-deslizar {
  position: fixed;
  z-index: 65;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .34rem .62rem;
  border-radius: 999px;
  background: rgba(8, 11, 14, .84);
  color: #fff;
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1;
  box-shadow: 0 10px 28px rgba(0, 0, 0, .3);
  border: 1px solid rgba(255, 255, 255, .16);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .28s ease, transform .28s ease;
}

.guia-deslizar.is-visible {
  opacity: 1;
  transform: none;
}

.guia-deslizar__flecha {
  display: inline-block;
  font-size: 1rem;
  line-height: 1;
  animation: guiaDeslizarNudge 1.5s ease-in-out infinite;
}

.guia-deslizar__txt {
  white-space: nowrap;
}

@keyframes guiaDeslizarNudge {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

@media (prefers-reduced-motion: reduce) {
  .guia-deslizar {
    transition: none;
    transform: none;
    opacity: .88;
  }

  .guia-deslizar__flecha {
    animation: none;
  }
}