/* ============================================
   Componente: WhatsApp flotante
   Fijo en todas las páginas, esquina inferior derecha.
   Pulso sutil en vez del verde brillante genérico.
   ============================================ */

.whatsapp-btn {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  z-index: 150;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-black);
  border: 1px solid var(--color-gold);
  border-radius: 50%;
  color: var(--color-gold);
  transition: background-color var(--duration-fast) var(--ease-elegant),
              transform var(--duration-fast) var(--ease-elegant);
}

.whatsapp-btn:hover {
  background: var(--color-gold);
  color: var(--color-black);
  transform: scale(1.05);
}

.whatsapp-btn__icon {
  width: 26px;
  height: 26px;
  position: relative;
  z-index: 1;
}

/* Pulso sutil, muy espaciado, nada de parpadeo agresivo */
.whatsapp-btn__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--color-gold);
  animation: whatsapp-pulse 2.8s var(--ease-elegant) infinite;
}

@keyframes whatsapp-pulse {
  0%   { transform: scale(1);   opacity: 0.6; }
  100% { transform: scale(1.6); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-btn__ring { animation: none; }
}

@media (max-width: 600px) {
  .whatsapp-btn {
    width: 50px;
    height: 50px;
    bottom: var(--space-sm);
    right: var(--space-sm);
  }
}