.whatsapp-contact {
  position: fixed;
  right: max(24px, env(safe-area-inset-right));
  bottom: max(24px, env(safe-area-inset-bottom));
  z-index: 1200;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 20px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  background: #151713;
  color: #fff;
  box-shadow: 0 12px 32px rgba(0,0,0,.24);
  font: 600 13px/1 Arial,Helvetica,sans-serif;
  letter-spacing: .02em;
  text-decoration: none;
  transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease;
}
.whatsapp-contact:hover,
.whatsapp-contact:focus-visible {
  background: #1f7a4f;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 16px 38px rgba(0,0,0,.3);
}
.whatsapp-contact:focus-visible { outline: 3px solid #b99a63; outline-offset: 3px; }
.whatsapp-contact svg {
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  fill: currentColor;
}

@media (max-width: 900px) {
  .whatsapp-contact {
    right: max(16px, env(safe-area-inset-right));
    bottom: max(76px, calc(env(safe-area-inset-bottom) + 66px));
    width: 52px;
    height: 52px;
    min-height: 52px;
    padding: 0;
  }
  .whatsapp-contact span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
}