:root{color-scheme:dark;font-family:system-ui}body{margin:0;display:grid;min-height:100vh;place-items:center;background:#15171b;color:#e9edf1}main{max-width:420px;padding:36px;border:1px solid #363b45;border-radius:16px;background:#20232a}button{padding:12px 20px;border:0;border-radius:8px;background:#81c5b1;color:#10261e;font:inherit;cursor:pointer}button:disabled{opacity:.5}#code{font:1.5rem monospace;color:#81c5b1}#status{min-height:2em}