#whatsapp {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

#whatsapp a {
    display: block;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    background-color: #25d366;
    padding: 5px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#whatsapp a:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
}

#whatsapp img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

@media (max-width: 480px) {
    #whatsapp {
        bottom: 50px;
        right: 15px;
    }

    #whatsapp a {
        width: 55px;
        height: 55px;
    }
}