:root{--bg: #f6f7f9;--panel: #ffffff;--text: #1c1f24;--muted: #5f6672;--accent: #2f5bd3;--mine: #e7eefc;--border: #dfe3ea;--error: #b42318;--ok: #1a7f37;--warn: #9a6700;font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:var(--text);background:var(--bg)}@media (prefers-color-scheme: dark){:root{--bg: #15171b;--panel: #1d2026;--text: #e6e8eb;--muted: #9aa1ad;--accent: #7ea2ff;--mine: #23304a;--border: #2d323b;--error: #ff8b80;--ok: #5fd07c;--warn: #e0b341}}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}.center{display:grid;place-items:center;min-height:100vh;padding:16px}.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:24px;width:min(380px,100%);display:grid;gap:12px}.card h1{margin:0;font-size:1.4rem}label{display:grid;gap:4px;font-size:.9rem;color:var(--muted)}input{padding:8px 10px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text)}button{padding:8px 12px;border:0;border-radius:6px;background:var(--accent);color:#fff;cursor:pointer}button:disabled{opacity:.5;cursor:default}button.link{background:none;color:var(--accent);padding:4px 0}.note{font-size:.8rem;color:var(--muted);margin:0}.error{color:var(--error);margin:0}.chat{display:grid;grid-template-columns:260px 1fr;height:100vh}aside{border-right:1px solid var(--border);background:var(--panel);padding:12px;display:flex;flex-direction:column;gap:12px;overflow:auto}aside header{display:flex;justify-content:space-between;align-items:center}aside ul{list-style:none;padding:0;margin:0;display:grid;gap:4px}aside li button{width:100%;text-align:left;background:none;color:var(--text);display:flex;justify-content:space-between}aside li button.active{background:var(--mine)}.badge{background:var(--accent);color:#fff;border-radius:999px;padding:0 8px;font-size:.8rem}section{display:flex;flex-direction:column;min-width:0}.status{padding:6px 12px;font-size:.85rem;border-bottom:1px solid var(--border)}.status.ok{color:var(--ok)}.status.warn{color:var(--warn)}.messages{list-style:none;margin:0;padding:12px;flex:1;overflow:auto;display:flex;flex-direction:column;gap:8px}.messages li{max-width:70%;padding:8px 10px;border-radius:8px;background:var(--panel);border:1px solid var(--border);display:grid;gap:2px;overflow-wrap:anywhere;white-space:pre-wrap}.messages li.mine{align-self:flex-end;background:var(--mine)}.messages li.pending{opacity:.6}.messages li.failed{border-color:var(--error)}.sender{font-size:.75rem;color:var(--muted)}.composer{display:flex;gap:8px;padding:12px;border-top:1px solid var(--border)}.composer input{flex:1}@media (max-width: 640px){.chat{grid-template-columns:1fr;grid-template-rows:auto 1fr;height:auto;min-height:100vh}aside{border-right:0;border-bottom:1px solid var(--border);max-height:40vh}}