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

           
/* Variant 5: Pulse Ring */
.btn-5 {
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}
.btn-5::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid #25d366;
    animation: pulse-ring 1.5s infinite;
}
@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}