body { font-family: system-ui, sans-serif; max-width: 600px; margin: 0 auto; padding: 1rem; background: #111; color: #eee; }
input, select, button { width: 100%; padding: .8rem; margin: .3rem 0; font-size: 1rem; box-sizing: border-box; }
input[type=checkbox] { width: auto; }
button { background: #c00; color: #fff; border: 0; border-radius: 6px; }
nav { display: flex; gap: .4rem; }
ul { list-style: none; padding: 0; }
li { padding: 1rem; border-bottom: 1px solid #333; cursor: pointer; }
dialog { width: 90%; max-width: 500px; background: #1b1b1b; color: #eee; border: 1px solid #333; }
label { display: block; margin: .5rem 0; }
menu { padding: 0; }