.whatsapp-float {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 56px;
    height: 56px;
    background: #25D366; /* WhatsApp green */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    box-shadow: 0 8px 24px rgba(0,0,0,.25);
    transition: transform .25s ease, box-shadow .25s ease;
}

.whatsapp-float svg {
    width: 28px;
    height: 28px;
    fill: #ffffff;
    display: block;
}

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 12px 32px rgba(0,0,0,.35);
}

@media (max-width: 768px) {
    .whatsapp-float {
        right: 16px;
        bottom: 16px;
        width: 52px;
        height: 52px;
    }
}