:root{--bg:#fff;--panel:#f5f6f8;--text:#1d1f23;--muted:#6b7079;--line:#e3e5e9;--accent:#2f6fde;--accent-text:#fff;--mine:#e7f0ff;--mention:#fff6d6;--danger:#c43c3c;--ok:#2e9b57;--warn:#d39b21;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#17181b;--panel:#1f2125;--text:#e6e7ea;--muted:#9a9ea6;--line:#2e3136;--accent:#5b8ff0;--mine:#1f2c45;--mention:#3a3320;--danger:#ef6b6b}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg)}button{font:inherit;cursor:pointer;background:var(--accent);color:var(--accent-text);border:0;border-radius:8px;padding:8px 14px}button:disabled{opacity:.5;cursor:default}button.link{color:var(--accent);background:0 0;padding:4px 6px}input,textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:8px;width:100%;padding:8px 10px}textarea{resize:none}label{color:var(--muted);gap:4px;font-size:14px;display:grid}.error{color:var(--danger);margin:0;font-size:14px}.loading,.placeholder{color:var(--muted);text-align:center;margin-top:30vh}.auth{gap:14px;max-width:360px;margin:12vh auto;padding:24px;display:grid}.auth h1{margin:0 0 4px;font-size:22px}.layout{grid-template-columns:280px 1fr;height:100%;display:grid}.sidebar{background:var(--panel);border-right:1px solid var(--line);flex-direction:column;min-height:0;display:flex}.sidebar header{align-items:center;gap:8px;padding:14px 12px;display:flex}.sidebar header strong{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.status{background:var(--warn);border-radius:50%;width:8px;height:8px}.status.live{background:var(--ok)}.status.offline{background:var(--danger)}.sidebar .new{margin:0 12px 8px}.chats{margin:0;padding:0;list-style:none;overflow-y:auto}.chats li button{text-align:left;width:100%;color:var(--text);background:0 0;border-radius:0;gap:2px;padding:10px 12px;display:grid}.chats li.active button{background:var(--line)}.chats li.removed{opacity:.6}.chats .name{text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.chats .preview{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.chats .empty{color:var(--muted);padding:16px 12px;font-size:14px}.conversation{flex-direction:column;min-height:0;display:flex}.conversation>header{border-bottom:1px solid var(--line);align-items:center;gap:8px;padding:12px 16px;display:flex}.conversation>header strong{flex:1}.back{color:var(--accent);background:0 0;padding:0 6px;font-size:22px;display:none}.messages{flex:1;align-content:start;gap:10px;margin:0;padding:12px 16px;list-style:none;display:grid;overflow-y:auto}.messages li{background:var(--panel);border-radius:12px;max-width:70%;padding:8px 12px}.messages li.mine{background:var(--mine);justify-self:end}.messages li.mentions-me{background:var(--mention)}.messages .meta{color:var(--muted);gap:8px;font-size:12px;display:flex}.messages p{white-space:pre-wrap;overflow-wrap:anywhere;margin:4px 0 0}.messages p.deleted{color:var(--muted);font-style:italic}.messages blockquote{border-left:3px solid var(--line);color:var(--muted);text-overflow:ellipsis;white-space:nowrap;margin:4px 0 0;padding-left:8px;font-size:13px;overflow:hidden}.messages .reply{padding:0;font-size:12px}.typing,.readonly{color:var(--muted);margin:0;padding:4px 16px;font-size:13px}.composer{border-top:1px solid var(--line);gap:6px;padding:10px 16px;display:grid}.composer .row{align-items:end;gap:8px;display:flex}.composer .replying{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.members{border-bottom:1px solid var(--line);gap:8px;padding:8px 16px;display:grid}.members ul{gap:4px;margin:0;padding:0;list-style:none;display:grid}.members li{align-items:center;gap:8px;display:flex}.members li>span{flex:1}.members small{color:var(--muted)}.members .danger{color:var(--danger)}.members .note{color:var(--muted);margin:0;font-size:14px}.members .toggle{align-items:center;gap:4px;font-size:13px;display:flex}.members .toggle input{width:auto}.members form{gap:8px;display:flex}.members form button,.composer button{white-space:nowrap}.dialog{background:#0006;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.dialog form{background:var(--bg);border-radius:12px;gap:12px;width:min(420px,100%);padding:20px;display:grid}.dialog h2{margin:0;font-size:18px}.dialog .row{justify-content:flex-end;gap:8px;display:flex}@media (width<=720px){.layout{grid-template-columns:1fr}.layout .conversation,.layout.open .sidebar{display:none}.layout.open .conversation{height:100%;display:flex}.back{display:inline}.messages li{max-width:88%}}