.megawhatsapp-btn {
    position: fixed;
    left: 20px;
    bottom: 20px;
    z-index: 9999;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: #25D366;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
}

.megawhatsapp-btn:hover,
.megawhatsapp-btn:focus {
    transform: scale(1.08);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.megawhatsapp-btn svg {
    width: 32px;
    height: 32px;
    fill: #ffffff;
}

@media (max-width: 767px) {
    .megawhatsapp-btn {
        left: 16px;
        bottom: 16px;
        width: 52px;
        height: 52px;
    }

    .megawhatsapp-btn svg {
        width: 30px;
        height: 30px;
    }
}