:root{--bg: #0f1115;--panel: #171a21;--panel-2: #1e222b;--line: #2a2f3a;--text: #e7e9ee;--muted: #8b93a5;--accent: #5b8cff;--ok: #3ecf8e;--bad: #ff6b6b;--radius: 12px;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}button,input,select{font:inherit}.app{max-width:760px;margin:0 auto;padding:24px 16px 64px}header.top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}header.top h1{font-size:20px;margin:0;letter-spacing:-.3px}header.top .who{color:var(--muted);font-size:13px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:12px}.card.click{cursor:pointer;transition:border-color .15s,background .15s}.card.click:hover{border-color:var(--accent);background:var(--panel-2)}h2{font-size:16px;margin:24px 0 10px}h3{font-size:14px;margin:0 0 8px;color:var(--muted);font-weight:600}label{display:block;margin-bottom:10px}label span{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}input,select{width:100%;padding:9px 11px;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;color:var(--text);outline:none}input:focus,select:focus{border-color:var(--accent)}button{padding:9px 14px;background:var(--accent);color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:500}button:disabled{opacity:.5;cursor:default}button.ghost{background:transparent;border:1px solid var(--line);color:var(--text)}button.link{background:none;color:var(--accent);padding:0;font-weight:400}button.danger{background:transparent;border:1px solid var(--line);color:var(--bad)}.row{display:flex;gap:8px;align-items:center}.row.between{justify-content:space-between}.row.wrap{flex-wrap:wrap}.grow{flex:1}.muted{color:var(--muted);font-size:13px}.mono{font-variant-numeric:tabular-nums}.pos{color:var(--ok)}.neg{color:var(--bad)}.tabs{display:flex;gap:4px;margin:20px 0 12px;border-bottom:1px solid var(--line)}.tabs button{background:none;color:var(--muted);border-radius:0;border-bottom:2px solid transparent;padding:8px 12px}.tabs button.on{color:var(--text);border-bottom-color:var(--accent)}.error{background:#2a1a1d;border:1px solid #5a2a30;color:#ffb4b4;padding:10px 12px;border-radius:8px;margin-bottom:12px;font-size:14px}.error .trace{display:block;margin-top:4px;color:var(--muted);font-size:11px}.empty{color:var(--muted);text-align:center;padding:28px 0}.list>*+*{margin-top:8px}.chip{display:inline-block;padding:2px 8px;background:var(--panel-2);border:1px solid var(--line);border-radius:999px;font-size:12px;color:var(--muted)}.participants{display:grid;gap:6px;margin-top:4px}.participant{display:flex;align-items:center;gap:8px;padding:7px 10px;background:var(--panel-2);border:1px solid var(--line);border-radius:8px}.participant input[type=checkbox]{width:auto}.participant input[type=text]{width:90px;text-align:right}.center{min-height:60vh;display:grid;place-items:center}.auth{width:100%;max-width:340px}.divider{display:flex;align-items:center;gap:10px;margin:16px 0 12px;color:var(--muted);font-size:12px}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--line)}.demo-bar{background:#1d2436;border:1px solid #2f3e5c;color:#a9c0f0;padding:9px 12px;border-radius:8px;font-size:13px;margin-bottom:16px}