.whatsapp-float {
  position: fixed;
  bottom: calc(var(--vh) * 4);
  right: 2vw;
  background-color: #25d366;
  color: white;
  font-size: 24px;
  width: 5vw;
  height: 5vw;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(37, 16, 16, 0.2);
  transition: transform 0.2s, box-shadow 0.2s;
  z-index: 1000;
  overflow: visible;
}

.whatsapp-float::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #25d366;
  opacity: 0;
  z-index: -1;
  animation: raindropFlash 1.85s ease-out infinite;
}

@keyframes raindropFlash {
  0% {
    transform: scale(1);
    opacity: 0.5;
  }
  40% {
    transform: scale(1.8);
    opacity: 0;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

.whatsapp-float a {
  color: white !important;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: calc(var(--vh) * 5);
    right: 8vw;
    font-size: 24px;
    width: calc(var(--vh) * 8);
    height: calc(var(--vh) * 8);
  }
}