:root{--bg: #12121a;--panel: #1a1a24;--panel-2: #22222e;--border: #2e2e3d;--text: #e6e6ef;--muted: #9a9aae;--accent: #6c8cff;--accent-soft: #2a3557;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);height:100vh;overflow:hidden}#root{height:100vh}button{font:inherit;cursor:pointer;border-radius:8px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:8px 14px}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#0d0d14;font-weight:600}input,select,textarea{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:9px 11px}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}.login-wrap{height:100vh;display:grid;place-items:center}.login-card{width:360px;padding:28px;background:var(--panel);border:1px solid var(--border);border-radius:14px;display:flex;flex-direction:column;gap:12px}.login-card h1{margin:0 0 6px;font-size:20px}.login-card p.hint{margin:0 0 8px;color:var(--muted);font-size:13px}.shell{display:grid;grid-template-columns:280px 1fr;height:100vh}.sidebar{background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.sidebar-head{padding:14px;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:10px}.sidebar-list{flex:1;overflow-y:auto;padding:8px}.sidebar-foot{padding:12px 14px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.sidebar-foot span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv{display:flex;align-items:center;gap:6px;padding:9px 10px;border-radius:8px;cursor:pointer;color:var(--text);font-size:14px}.conv:hover{background:var(--panel-2)}.conv.active{background:var(--accent-soft)}.conv-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-del{border:none;background:none;color:var(--muted);padding:2px 6px;border-radius:6px;opacity:0;font-size:15px;line-height:1}.conv:hover .conv-del{opacity:1}.conv-del:hover{color:#ff8080;background:none}.main{display:flex;flex-direction:column;min-height:0;min-width:0}.main-head{padding:12px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;background:var(--panel)}.main-head .title{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.spacer{flex:1}.messages{flex:1;overflow-y:auto;padding:22px 18px}.messages-inner{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:18px}.msg{display:flex;flex-direction:column;gap:5px}.msg-role{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.msg-body{white-space:pre-wrap;word-wrap:break-word;line-height:1.6;padding:12px 14px;border-radius:10px;background:var(--panel);border:1px solid var(--border)}.msg.user .msg-body{background:var(--accent-soft);border-color:#3a4573}.msg-meta{font-size:11px;color:var(--muted)}.composer{border-top:1px solid var(--border);padding:14px 18px;background:var(--panel)}.composer-inner{max-width:820px;margin:0 auto;display:flex;gap:10px;align-items:flex-end}.composer textarea{flex:1;resize:none;min-height:46px;max-height:200px;line-height:1.5}.empty{color:var(--muted);text-align:center;margin-top:15vh;font-size:14px;line-height:1.7}.error{margin:10px 18px;padding:10px 12px;border-radius:8px;background:#3a1f24;border:1px solid #63303a;color:#ffc9cf;font-size:13px}.cursor:after{content:"▍";opacity:.6}