#cib-call-button {
    position: fixed;
    bottom: 20px;
    z-index: 9999;
    background-color: #28a745;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    text-decoration: none;
    transition: opacity 0.3s ease;
}
#cib-call-button.left {
    left: 20px;
}
#cib-call-button.right {
    right: 20px;
}
#cib-call-button:hover {
    opacity: 0.9;
}