.whatsapp-fab {
  position: fixed;
  z-index: 999;
  right: max(20px, env(safe-area-inset-right, 0px));
  bottom: max(20px, env(safe-area-inset-bottom, 0px));
  display: grid;
  width: 60px;
  height: 60px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .72);
  border-radius: 50%;
  background: #08cb00;
  box-shadow: 0 8px 24px rgba(7, 17, 31, .28);
  color: #07111f;
  text-decoration: none;
  transition: background-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.whatsapp-fab svg {
  display: block;
  width: 30px;
  height: 30px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.whatsapp-fab:hover {
  transform: scale(1.04);
  background: #06b300;
  box-shadow: 0 10px 28px rgba(7, 17, 31, .34);
}

.whatsapp-fab:focus-visible {
  outline: 3px solid #b9ff71;
  outline-offset: 4px;
}

@media (max-width: 600px) {
  .whatsapp-fab {
    width: 56px;
    height: 56px;
    right: max(16px, env(safe-area-inset-right, 0px));
    bottom: max(16px, env(safe-area-inset-bottom, 0px));
  }

  .whatsapp-fab svg {
    width: 28px;
    height: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-fab {
    transition: none;
  }

  .whatsapp-fab:hover {
    transform: none;
  }
}

@media (forced-colors: active) {
  .whatsapp-fab {
    border: 2px solid ButtonText;
    background: ButtonFace;
    color: ButtonText;
    forced-color-adjust: none;
  }
}