.whatsapp-float {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: var(--z-whatsapp-float);
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--color-turquoise);
  color: var(--color-charcoal);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.whatsapp-float:hover {
  background: var(--color-turquoise-hover);
  transform: translateY(-2px);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
}

/* Slow, subtle pulse ring -- sits behind the button within its own
   stacking context (z-index only needs to beat the button's own content). */
.whatsapp-float::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: var(--color-turquoise);
  animation: whatsappPulse 2.6s var(--ease-in-out) infinite;
}

@keyframes whatsappPulse {
  0% {
    transform: scale(1);
    opacity: 0.5;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

@media (max-width: 560px) {
  .whatsapp-float {
    right: var(--space-4);
    bottom: var(--space-4);
    width: 52px;
    height: 52px;
  }
}

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

  .whatsapp-float::before {
    animation: none;
    display: none;
  }
}