.floating-whatsapp {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1080;
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: #25d366;
    color: #fff;
    box-shadow: 0 5px 16px rgba(0, 0, 0, 0.24);
    text-decoration: none;
    transition: background-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.floating-whatsapp .bi {
    font-size: 30px;
    line-height: 1;
}

.floating-whatsapp:hover {
    background: #1da851;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
}

.floating-whatsapp:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 3px;
}

@media (max-width: 575px) {
    .floating-whatsapp {
        right: 16px;
        bottom: 18px;
        width: 54px;
        height: 54px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .floating-whatsapp {
        transition: none;
    }
}