.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: var(--z-whatsapp);
  cursor: pointer;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

.whatsapp-float a {
  display: block;
  position: relative;
}

.whatsapp-float img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(37,211,102,0.35);
}

.whatsapp-float::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: rgba(37,211,102,0.25);
  animation: whatsappPulse 2s ease-in-out infinite;
  z-index: -1;
}

.whatsapp-float::after {
  content: "";
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  background: rgba(37,211,102,0.12);
  animation: whatsappPulse 2s ease-in-out infinite 0.4s;
  z-index: -2;
}

@keyframes whatsappPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.15);
    opacity: 0.6;
  }
}

.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-dark);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  pointer-events: none;
}

.whatsapp-tooltip::after {
  content: "";
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--primary-dark);
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 480px) {
  .whatsapp-float { bottom: 1.25rem; right: 1.25rem; }
  .whatsapp-float img { width: 50px; height: 50px; }
  .whatsapp-tooltip { display: none; }
}