.whatsapp-float {
  box-sizing: border-box;
  position: fixed;
  z-index: 90;
  right: max(22px, env(safe-area-inset-right));
  bottom: max(var(--whatsapp-bottom, 22px), env(safe-area-inset-bottom));
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  padding: 13px;
  background: #167c45;
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 4px 18px #0003;
  transition: background .2s, transform .2s;
}
.whatsapp-float img {
  display: block;
  width: 100%;
  height: 100%;
  filter: brightness(0) invert(1);
}
.whatsapp-float:focus-visible {
  outline: 3px solid #3d4049;
  outline-offset: 4px;
}
.whatsapp-float__label {
  position: absolute;
  right: calc(100% + 10px);
  padding: 8px 12px;
  color: #fff;
  background: #3d4049;
  font: 500 14px/1.3 Arial, sans-serif;
  white-space: nowrap;
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
}
.whatsapp-float:focus-visible .whatsapp-float__label { opacity: 1; }
body.menu-open .whatsapp-float,
body:has(dialog[open]) .whatsapp-float { visibility: hidden; pointer-events: none; }
@media (hover: hover) and (pointer: fine) {
  .whatsapp-float:hover { background: #116336; transform: translateY(-2px); }
  .whatsapp-float:hover .whatsapp-float__label { opacity: 1; }
}
@media (max-width: 560px) {
  .whatsapp-float {
    right: max(14px, env(safe-area-inset-right));
    bottom: max(var(--whatsapp-bottom, 16px), env(safe-area-inset-bottom));
    width: 54px;
    height: 54px;
    padding: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .whatsapp-float { transition: none; }
}