:root{color-scheme:light dark;--bg: #f8fafc;--panel: #ffffff;--line: #e2e8f0;--text: #0f172a;--muted: #64748b;--brand: #16a34a;--danger: #dc2626;--me: #dcfce7}@media(prefers-color-scheme:dark){:root{--bg: #0f172a;--panel: #1e293b;--line: #334155;--text: #f1f5f9;--muted: #94a3b8;--me: #14532d}}*{box-sizing:border-box}body{margin:0;font:14px/1.4 system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}.center{display:grid;place-items:center;height:100dvh}.login{display:grid;place-items:center;height:100dvh;padding:16px}.login-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px;width:min(360px,100%);display:grid;gap:12px}.login-card h1{margin:0 0 8px;font-size:22px;color:var(--brand)}label{display:grid;gap:4px;font-size:13px;color:var(--muted)}input,textarea{font:inherit;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text)}button{font:inherit;padding:10px 14px;border:0;border-radius:8px;background:var(--brand);color:#fff;cursor:pointer}button:disabled{opacity:.6;cursor:default}.error{color:var(--danger);margin:0}.shell{display:grid;grid-template-rows:44px 1fr;grid-template-columns:340px 1fr;height:100dvh}.top{grid-column:1 / -1;display:flex;align-items:center;gap:12px;padding:0 12px;border-bottom:1px solid var(--line);background:var(--panel)}.top .spacer{flex:1}.status{font-size:12px;color:var(--muted)}.status.online{color:var(--brand)}.link{background:none;color:var(--brand);padding:4px 8px}.list{border-right:1px solid var(--line);background:var(--panel);overflow:auto}.filters{display:flex;flex-wrap:wrap;gap:6px;padding:8px;border-bottom:1px solid var(--line)}.chip{background:var(--bg);color:var(--text);padding:4px 10px;border-radius:999px;font-size:12px}.chip.on{background:var(--brand);color:#fff}.list ul{list-style:none;margin:0;padding:0}.row{display:flex;gap:10px;padding:10px 12px;cursor:pointer;border-bottom:1px solid var(--line)}.row.on{background:var(--bg)}.dot{width:10px;height:10px;border-radius:50%;margin-top:6px;flex:none}.row-main{flex:1;min-width:0}.row-top,.row-bottom{display:flex;justify-content:space-between;gap:8px}.row time,.preview{color:var(--muted);font-size:12px}.preview{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.badge{background:var(--brand);color:#fff;border-radius:999px;font-size:11px;padding:1px 7px}.empty{padding:24px;color:var(--muted);text-align:center}.chat{display:grid;grid-template-rows:44px 1fr auto;min-height:0}.chat-head{display:flex;align-items:center;gap:10px;padding:0 12px;border-bottom:1px solid var(--line);background:var(--panel)}.chat-head .back{display:none;font-size:22px}.muted{color:var(--muted)}.messages{overflow:auto;padding:12px;display:flex;flex-direction:column;gap:6px}.bubble{max-width:min(70%,640px);padding:8px 10px;border-radius:10px;background:var(--panel);border:1px solid var(--line);white-space:pre-wrap;word-break:break-word}.bubble.out{align-self:flex-end;background:var(--me)}.bubble.failed{border-color:var(--danger)}.bubble .meta{display:block;text-align:right;font-size:11px;color:var(--muted);margin-top:2px}.bubble .read{color:#2563eb}.bubble .reason{color:var(--danger);font-size:12px}.composer{display:flex;flex-wrap:wrap;gap:8px;padding:10px;border-top:1px solid var(--line);background:var(--panel)}.composer textarea{flex:1;resize:none;max-height:160px}.composer-error{flex:0 0 100%;color:var(--danger);font-size:12px;margin:0}@media(max-width:720px){.shell{grid-template-columns:1fr}.shell .chat{display:none}.shell.has-selection .chat{display:grid}.shell.has-selection .list{display:none}.chat-head .back{display:inline}}