.botao-whatsapp {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--sombra-elevada);
    z-index: 400;
    transition: transform 0.15s ease;
}

.botao-whatsapp:hover {
    transform: scale(1.06);
}