.whatsapp-float {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 100;
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  border: 3px solid #fff;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .24);
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 14px 30px rgba(0, 0, 0, .3);
}

.whatsapp-float:focus-visible {
  outline: 3px solid #171217;
  outline-offset: 4px;
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
}

@media (max-width: 520px) {
  .whatsapp-float {
    right: max(15px, env(safe-area-inset-right));
    bottom: max(15px, env(safe-area-inset-bottom));
    width: 54px;
    height: 54px;
  }

  .whatsapp-float svg {
    width: 29px;
    height: 29px;
  }
}