.gwc-button {
  position: fixed;
  z-index: 99999;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  box-shadow: 0 8px 22px rgba(18, 140, 64, 0.38);
  text-decoration: none;
  line-height: 0;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.gwc-button svg {
  width: 58%;
  height: 58%;
  display: block;
  pointer-events: none;
}

.gwc-button:hover,
.gwc-button:focus-visible {
  background: #1ebe5a;
  color: #fff;
  transform: scale(1.06);
  box-shadow: 0 10px 26px rgba(18, 140, 64, 0.45);
}

.gwc-button:focus {
  outline: none;
}

.gwc-button:focus-visible {
  outline: 3px solid #128c44;
  outline-offset: 3px;
}

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

  .gwc-button:hover,
  .gwc-button:focus-visible {
    transform: none;
  }
}