.df-whatsapp-button {
    position: fixed;
    right: calc(26px + env(safe-area-inset-right, 0px));
    bottom: calc(26px + env(safe-area-inset-bottom, 0px));
    z-index: 1035;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    width: 64px;
    height: 64px;
    padding: 15px;
    border: 1.5px solid #008e70;
    border-radius: 50%;
    background: #fff;
    color: #008e70;
    box-shadow: 0 5px 20px #0754431f;
    text-decoration: none;
    transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease;
}

.df-whatsapp-button svg {
    display: block;
    flex: none;
    width: 32px;
    height: 32px;
}

.df-whatsapp-button:hover {
    background: #edf7f1;
    color: #00765b;
    box-shadow: 0 8px 24px #07544329;
    text-decoration: none;
    transform: translateY(-3px);
}

.df-whatsapp-button:focus-visible {
    outline: 3px solid #77d8b6;
    outline-offset: 4px;
}

@media (max-width: 639.98px) {
    .df-whatsapp-button {
        right: calc(18px + env(safe-area-inset-right, 0px));
        bottom: calc(18px + env(safe-area-inset-bottom, 0px));
        width: 54px;
        height: 54px;
        padding: 11px;
    }

    .df-whatsapp-button svg { width: 29px; height: 29px; }
}

@media (prefers-reduced-motion: reduce) {
    .df-whatsapp-button { transition: none; }
    .df-whatsapp-button:hover { transform: none; }
}

@media print {
    .df-whatsapp-button { display: none !important; }
}