.wa-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: #25D366;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 9999;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
}
.wa-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}
.wa-float::before {
  content: '';
  position: absolute;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  opacity: 0.4;
  animation: wa-pulse 2s ease-out infinite;
}
@keyframes wa-pulse {
  0% { transform: scale(1); opacity: 0.4; }
  100% { transform: scale(1.8); opacity: 0; }
}
@media (max-width: 768px) {
  .wa-float {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
  }
  .wa-float svg {
    width: 24px;
    height: 24px;
  }
}