:root{--bg: #12131a;--panel: #191b24;--line: #272a37;--text: #e6e8ef;--muted: #8b90a3;--accent: #6c8cff;--warn: #d9a441;--error: #e56a6a;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}button{font:inherit;padding:8px 12px;border-radius:8px;border:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#0d1020;font-weight:600}button.ghost{background:none;border:none;color:var(--muted)}button.small{padding:2px 6px;font-size:12px}input{font:inherit;width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--line);background:#0e0f16;color:var(--text)}label{display:block;margin:10px 0;color:var(--muted);font-size:13px}label input{margin-top:4px}.muted{color:var(--muted)}.small{font-size:12px}.error{color:var(--error)}.centre{display:grid;place-items:center;min-height:100vh;padding:24px}.card{width:360px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px}.card h1{margin:0 0 4px;font-size:22px}.card button{width:100%;margin-top:8px}.divider{display:flex;align-items:center;gap:10px;margin:18px 0 6px;color:var(--muted);font-size:12px}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--line)}.app{display:grid;grid-template-columns:220px 1fr;height:100vh}aside{background:var(--panel);border-right:1px solid var(--line);padding:14px;display:flex;flex-direction:column;gap:10px}.brand{font-weight:600;display:flex;align-items:center;gap:8px}nav{flex:1;display:flex;flex-direction:column;gap:4px;overflow-y:auto}.channel{text-align:left;background:none;border:none;color:var(--muted)}.channel.active{background:#232636;color:var(--text)}main{display:flex;flex-direction:column;min-width:0}.messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:6px}.message{display:grid;grid-template-columns:48px 90px 1fr;gap:10px;align-items:baseline}.message .seq{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.message .who{color:var(--accent);font-size:12px;overflow:hidden;text-overflow:ellipsis}.message .text{white-space:pre-wrap;word-break:break-word}.composer{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line)}.banner{padding:8px 16px;font-size:13px;display:flex;justify-content:space-between;gap:12px}.banner.warn{background:#3a2f14;color:var(--warn)}.banner.error{background:#3a1c1c;color:var(--error)}.dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}.dot.online{background:#5ec27e}.dot.connecting,.dot.reconnecting{background:var(--warn)}.dot.closed{background:var(--error)}