/* Base button */
.fw-whatsapp-btn {
    position: fixed;
    z-index: 9999;
    border-radius: 50%;
}

/* Icon */
.fw-whatsapp-btn img {
    position: relative;
    z-index: 2;
    border-radius: 50%;
    box-shadow: 0 6px 18px rgba(0,0,0,0.25);
}

/* Wave container */
.fw-wave {
    width: auto;
    height: auto;
}

/* Wave animation */
.fw-wave-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: rgba(37, 211, 102, 0.45);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: fw-wave 2s infinite;
    z-index: 1;
}

/* Animation keyframes */
@keyframes fw-wave {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.6;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.8);
        opacity: 0;
    }
}

/* Hover effect */
.fw-whatsapp-btn:hover img {
    transform: scale(1.1);
    transition: 0.3s;
}

/* Mobile optimization */
@media (max-width: 768px) {
    .fw-whatsapp-btn img {
        width: 55px !important;
    }
}