:root{--bg: #f7f7f8;--panel: #ffffff;--text: #111827;--muted: #64748b;--line: #e2e8f0;--dark: #111827;--dark-2: #1f2937;--soft: #eef2f7;--danger: #b91c1c;--radius: 16px}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;font-family:IBM Plex Sans,Segoe UI,sans-serif;color:var(--text)}body{background:linear-gradient(180deg,#f7f7f8,#eef0f3)}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-card{width:min(460px,100%);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 26px #0f172a0f;padding:20px}.auth-card h1{margin:0;font-size:24px}.auth-sub{margin:8px 0 16px;color:var(--muted);font-size:14px}.field{display:grid;gap:8px;margin-bottom:12px}.field label{color:var(--muted);font-size:13px}.field input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;outline:none}.field input:focus{border-color:#94a3b8;box-shadow:0 0 0 3px #94a3b833}.auth-actions{display:grid;gap:10px}.btn{border:0;border-radius:10px;padding:10px 14px;cursor:pointer;font-weight:600;transition:background .15s,transform .1s,opacity .15s}.btn:hover:not(:disabled){transform:translateY(-1px)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.primary{background:var(--dark);color:#fff}.btn.primary:hover:not(:disabled){background:var(--dark-2)}.btn.ghost{border:1px solid var(--line);background:#fff;color:var(--text)}.status{margin-top:14px;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#f8fafc;color:var(--muted);font-size:13px;white-space:pre-wrap}.status.error{border-color:#fca5a5;background:#fef2f2;color:var(--danger)}.chat-page{min-height:100vh;padding:16px}.chat-layout{max-width:1360px;margin:0 auto;display:grid;grid-template-columns:300px minmax(0,1fr);gap:12px;min-height:calc(100vh - 32px)}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 26px #0f172a0f}.sidebar{padding:12px;display:flex;flex-direction:column;gap:10px;background:#f8f9fb}.sidebar-top{display:grid;gap:8px}.user-meta{border:1px solid var(--line);border-radius:12px;background:#fff;padding:10px;font-size:13px;color:var(--muted);line-height:1.5}.session-list{flex:1;overflow:auto;display:grid;gap:6px;align-content:flex-start}.session-item{text-align:left;border:1px solid var(--line);border-radius:12px;background:#fff;padding:8px 9px}.session-item.active{background:var(--soft);border-color:#c6d0de}.session-item h4{margin:0;font-size:14px}.session-item p{margin:4px 0 0;color:var(--muted);font-size:12px}.chat-panel{padding:10px 12px 12px;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:8px}.chat-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #ebeff4;padding:4px 4px 10px}.chat-header h2{margin:0}.chat-meta{color:var(--muted);font-size:12px}.chat-feed{overflow:auto;display:flex;flex-direction:column;gap:16px;padding:10px 6px}.message-row{width:100%;max-width:920px;margin:0 auto;display:flex;gap:10px}.assistant-row{justify-content:flex-start}.user-row{justify-content:flex-end}.avatar{width:28px;height:28px;border-radius:999px;background:linear-gradient(160deg,#111827,#334155);color:#fff;font-size:11px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;margin-top:2px}.bubble{max-width:min(78%,760px);border-radius:16px;padding:10px 13px;line-height:1.6;font-size:14px;white-space:pre-wrap;word-break:break-word}.bubble.user{background:#eceff3;color:#111827;border:1px solid #dce2ea;border-top-right-radius:8px}.bubble.assistant{padding:0;background:transparent}.assistant-content{line-height:1.74}.role-chip{display:inline-flex;margin-bottom:6px;padding:2px 8px;border-radius:999px;border:1px solid #d4dbe4;background:#f6f8fb;color:#334155;font-size:11px;font-weight:600}.meta-block{margin-top:8px;border:1px dashed rgba(16,33,46,.24);border-radius:10px;background:#10212e08}.meta-block summary{cursor:pointer;padding:5px 8px;color:var(--muted);font-size:12px}.meta-block pre{margin:0;border-top:1px dashed rgba(16,33,46,.17);padding:6px 8px;max-height:180px;overflow:auto;font-size:12px;font-family:IBM Plex Mono,Consolas,monospace}.chat-input-wrap{display:grid;gap:8px;border:1px solid #d8dee7;border-radius:20px;background:#fff;padding:10px 10px 8px;box-shadow:0 8px 24px #0f172a14}.chat-input{width:100%;min-height:72px;max-height:210px;resize:vertical;border:0;border-radius:14px;padding:8px 10px 2px;outline:none}.input-actions{display:flex;justify-content:space-between;align-items:center;gap:10px}.input-actions .right{display:inline-flex;gap:8px}.small{color:var(--muted);font-size:12px}.send-btn{border-radius:999px;padding:8px 16px}.small-empty{color:var(--muted);font-size:13px;margin:0}@media(max-width:980px){.chat-layout{grid-template-columns:1fr}.message-row{max-width:100%}.bubble{max-width:92%}.input-actions{flex-direction:column;align-items:stretch}.input-actions .right{justify-content:flex-end}}
.auth-card .field:nth-of-type(3){display:none}