/* Utilidades compartidas sin imponer el diseño particular de cada modulo. */
[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, currentColor 55%, transparent);
  outline-offset: 3px;
}


/* Navegacion comun de regreso a la portada. */
#back-home-btn {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: #2e3147;
  font-size: 1.2rem;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid #e7e8f0;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  transition: transform 0.15s, box-shadow 0.15s;
}
#back-home-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}