.wa-icon {
    width: 30px;
    height: 30px;
    fill: white;
}            

/* Variant 12: Split Colors */
.btn-12 {
    width: 60px;
    height: 60px;
    background: linear-gradient(90deg, #25d366 50%, #128c7e 50%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}
.btn-12:hover {
    background: linear-gradient(90deg, #128c7e 50%, #25d366 50%);
    transform: rotate(180deg);
}