.waf-whatsapp-button {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #25D366;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  text-decoration: none;
  z-index: 9999;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.waf-whatsapp-button:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 12px 28px rgba(0,0,0,0.25);
}
.waf-whatsapp-button:active { transform: scale(0.98); }
.waf-whatsapp-button .waf-icon {
  width: 28px;
  height: 28px;
  fill: white;
}
@media (max-width: 480px) {
  .waf-whatsapp-button { right: 14px; bottom: 14px; width: 52px; height: 52px; }
  .waf-whatsapp-button .waf-icon { width: 26px; height: 26px; }
}