.whatsapp-bubble {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: #25D366;
    box-shadow: 0 6px 14px rgba(37, 211, 102, 0.24);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    cursor: pointer;
    transition: transform 160ms ease;
}

.whatsapp-bubble:hover {
    transform: translateY(-4px);
}

.whatsapp-bubble img {
    width: 42px;
    height: 42px;
}

.whatsapp-bubble .wb-badge {
    position: absolute;
    right: -6px;
    top: -6px;
    background: #fff;
    color: #25D366;
    font-size: 11px;
    border-radius: 999px;
    padding: 2px 6px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

/* small-screen adjustments */
@media (max-width: 520px) {
    .whatsapp-bubble {
        right: 14px;
        bottom: 14px;
        width: 56px;
        height: 56px;
    }

    .whatsapp-bubble img {
        width: 32px;
        height: 32px;
    }
}