.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.5);
}

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

.whatsapp-tooltip {
  position: absolute;
  right: 66px;
  background: var(--dark);
  color: var(--warm-white);
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  white-space: nowrap;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

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

@media (max-width: 480px) {
  .whatsapp-float { width: 48px; height: 48px; bottom: 1.2rem; right: 1.2rem; }
  .whatsapp-float svg { width: 22px; height: 22px; }
}