/* =============================================================================
   CASONA SAN JOSÉ — Botón flotante de WhatsApp
   Pastilla fija abajo a la derecha, sobre el contenido y bajo el lightbox de
   galería (z-index 80) y el header (9999). Verde del Cajón, no el verde de
   WhatsApp: el botón es de la casa, no del canal.
   ============================================================================= */

.csn-wa-float {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 79;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 18px 12px 14px;
  border-radius: var(--radius-full);
  background: var(--color-verde-cajon);
  color: var(--color-blanco);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.02em;
  line-height: 1;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(8px);
  animation: csn-wa-float-in var(--duration-normal) var(--ease-out) 1.2s forwards;
  transition: background-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.csn-wa-float:hover,
.csn-wa-float:focus-visible {
  background: var(--color-cta-hover);
  color: var(--color-blanco);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
  text-decoration: none;
}

.csn-wa-float:focus-visible {
  outline: 2px solid var(--color-blanco);
  outline-offset: 2px;
}

.csn-wa-float__icon {
  flex: 0 0 auto;
}

.csn-wa-float__label {
  white-space: nowrap;
}

@keyframes csn-wa-float-in {
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .csn-wa-float {
    right: var(--space-3);
    bottom: var(--space-3);
    padding: 12px 16px 12px 12px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .csn-wa-float {
    animation: none;
    opacity: 1;
    transform: none;
    transition: none;
  }
  .csn-wa-float:hover { transform: none; }
}

@media print {
  .csn-wa-float { display: none; }
}