body.disconnected::after {
    content: "⚠️ Verbindung getrennt";
    position: fixed;
    bottom: 10px;
    right: 10px;
    background: red;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    z-index: 9999;
}