/* Modo nocturno */
body.dark-mode {
    background-color: #121212;
    color: #e0e0e0;
}

body.dark-mode textarea {
    background-color: #1e1e1e;
    color: #e0e0e0;
    border: 1px solid #333;
}

body.dark-mode li {
    background: #1e1e1e;
    border-color: #333;
}

body.dark-mode button {
    background-color: #333;
    color: #e0e0e0;
    border: 1px solid #444;
}