:root { color-scheme: light dark; font-family: system-ui, sans-serif; }
body { margin: 0; padding: 0 16px; }
main { max-width: 32rem; margin: 2rem auto; }
form { display: flex; gap: .5rem; margin: .75rem 0; }
input { flex: 1; padding: .6rem; font-size: 1rem; }
button { padding: .6rem 1rem; font-size: 1rem; cursor: pointer; }
#log { list-style: none; padding: 0; min-height: 8rem; max-height: 50vh; overflow-y: auto; }
#log li { padding: .25rem 0; }
#log .me { opacity: .7; }