.whatsapp-float {
  position: fixed;
  right: max(22px, env(safe-area-inset-right));
  bottom: max(22px, env(safe-area-inset-bottom));
  z-index: 50;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 56px;
  padding: 12px 18px;
  border-radius: 999px;
  background: #25d366;
  color: #073d20;
  box-shadow: 0 8px 28px #0008;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.whatsapp-float svg { width: 28px; height: 28px; flex: none; }
.whatsapp-float:hover {
  background: #7bef9e;
  color: #073d20;
  transform: translateY(-3px);
  box-shadow: 0 12px 32px #000a;
}
.whatsapp-float:focus-visible { outline: 3px solid #fff; outline-offset: 4px; }
@media (max-width: 540px) {
  .whatsapp-float {
    right: max(16px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
    width: 58px;
    height: 58px;
    padding: 0;
  }
  .whatsapp-float span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .whatsapp-float { transition: none; }
}