:root{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color-scheme:dark}
body{max-width:900px;margin:24px auto;padding:0 16px;background:#111;color:#eee}
.card{background:#1b1b1b;border:1px solid #333;border-radius:14px;padding:16px;margin:14px 0}
label{display:block;margin-top:10px;color:#bbb}
input,textarea,button{box-sizing:border-box;width:100%;margin-top:6px;padding:11px;border-radius:9px;border:1px solid #444;background:#0f0f0f;color:#eee}
textarea{min-height:260px;font:14px ui-monospace,Consolas,monospace;white-space:pre}
button{cursor:pointer;background:#292929}.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.good{color:#8ee28e}.bad{color:#ff8c8c}.muted{color:#999;font-size:.9rem} code{word-break:break-all}

[hidden]{display:none!important} .links{overflow-wrap:anywhere} button:disabled{opacity:.5}

#pairCode{display:block;font-size:2.7rem;font-weight:700;letter-spacing:.18em;text-align:center} #code{text-align:center;font-size:1.6rem;letter-spacing:.2em} .secondary{background:transparent} body{max-width:680px} button{min-height:48px}