a.wfb-button,
a.wfb-button:link,
a.wfb-button:visited {
    position: fixed !important;
    bottom: 25px !important;
    width: 60px !important;
    height: 60px !important;
    min-width: 60px !important;
    min-height: 60px !important;
    max-width: 60px !important;
    max-height: 60px !important;
    background-color: #25D366 !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25) !important;
    z-index: 999999 !important;
    transition: all 0.3s ease !important;
    text-decoration: none !important;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    overflow: hidden !important;
}

a.wfb-button:hover,
a.wfb-button:focus,
a.wfb-button:active {
    background-color: #20bd5a !important;
    transform: scale(1.1) !important;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3) !important;
}

a.wfb-button.wfb-right {
    right: 25px !important;
    left: auto !important;
}

a.wfb-button.wfb-left {
    left: 25px !important;
    right: auto !important;
}

a.wfb-button svg {
    width: 35px !important;
    height: 35px !important;
    min-width: 35px !important;
    min-height: 35px !important;
    max-width: 35px !important;
    max-height: 35px !important;
    color: #ffffff !important;
    fill: #ffffff !important;
    flex-shrink: 0 !important;
}

/* Pulse animation */
a.wfb-button::before {
    content: '' !important;
    position: absolute !important;
    width: 60px !important;
    height: 60px !important;
    border-radius: 50% !important;
    background-color: #25D366 !important;
    animation: wfb-pulse 2s infinite !important;
    z-index: -1 !important;
}

@keyframes wfb-pulse {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    70% {
        transform: scale(1.3);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    a.wfb-button,
    a.wfb-button:link,
    a.wfb-button:visited {
        width: 55px !important;
        height: 55px !important;
        min-width: 55px !important;
        min-height: 55px !important;
        max-width: 55px !important;
        max-height: 55px !important;
        bottom: 20px !important;
    }
    
    a.wfb-button.wfb-right {
        right: 20px !important;
    }
    
    a.wfb-button.wfb-left {
        left: 20px !important;
    }
    
    a.wfb-button svg {
        width: 30px !important;
        height: 30px !important;
        min-width: 30px !important;
        min-height: 30px !important;
        max-width: 30px !important;
        max-height: 30px !important;
    }
    
    a.wfb-button::before {
        width: 55px !important;
        height: 55px !important;
    }
}