.fwb-button {
  position: fixed;
  z-index: 9999;
  background-color: #25D366;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  width: 56px;
  height: 56px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.3);
  text-decoration: none;
  transition: transform 0.2s ease, background 0.3s;
}

.fwb-button:hover {
  transform: scale(1.1);
  background-color: #1EBE5D;
}

.fwb-icon {
  width: 28px;
  height: 28px;
}