.qcb-button {
    position: fixed;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    z-index: 1000;
    text-decoration: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Tooltip */
.qcb-button::after {
    content: attr(data-label);
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 14px;
    white-space: nowrap;
    display: none;
}

.qcb-button:hover {
    transform: scale(1.1);
    opacity: 0.9;
}

.qcb-button:hover::after {
    display: block;
}