:root{--bg:#0d1117;--panel:#161b22;--line:#2a313b;--ink:#e7ebf3;--muted:#8b949e;--accent:#1f6feb}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:15px;line-height:1.55}.wrap{max-width:780px;margin:0 auto;padding:0 16px;display:flex;flex-direction:column;height:100dvh}header{padding:14px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:baseline}header h1{font-size:17px;font-weight:600;line-height:1.2}header .brand{display:flex;flex-direction:column}header .right{display:flex;align-items:center;gap:10px}header .who{color:var(--muted);font-size:12px}.logout{background:none;border:1px solid var(--line);color:var(--muted);border-radius:8px;padding:5px 12px;font-size:13px;cursor:pointer}.logout:hover{color:var(--ink);border-color:var(--muted)}.messages{flex:1;overflow-y:auto;padding:20px 0;display:flex;flex-direction:column;gap:16px}.msg-user{align-self:flex-end;background:var(--accent);color:#fff;padding:9px 14px;border-radius:16px 16px 4px 16px;max-width:80%;white-space:pre-wrap}.msg-assistant{align-self:flex-start;max-width:95%}.md p{margin:6px 0}.md p:first-child{margin-top:0}.md p:last-child{margin-bottom:0}.md ol,.md ul{margin:6px 0;padding-left:20px}.md table{border-collapse:collapse;margin:10px 0;font-size:13.5px}.md td,.md th{border:1px solid var(--line);padding:6px 10px;text-align:left}.md th{background:var(--panel);color:var(--muted);font-weight:600}.md code{border:1px solid var(--line);border-radius:4px;padding:1px 5px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:13px}.md code,.md pre{background:var(--panel)}.md pre{border:1px solid var(--line);border-radius:8px;padding:10px 12px;overflow-x:auto}.thinking{display:flex;align-items:center;gap:5px}.thinking .dot{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:pulse 1.2s ease-in-out infinite}.thinking .dot:nth-child(2){animation-delay:.2s}.thinking .dot:nth-child(3){animation-delay:.4s}.thinking-label{color:var(--muted);font-size:12px;margin-left:4px}@keyframes pulse{0%,80%,to{opacity:.25}40%{opacity:1}}.empty-hint{color:var(--muted)}.tool-pill{margin:6px 0;border:1px solid var(--line);border-radius:8px;background:var(--panel);font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:12px}.tool-pill summary{cursor:pointer;padding:6px 10px;color:var(--muted);list-style:none}.tool-pill summary::-webkit-details-marker{display:none}.tool-pill summary:before{content:"▸ "}.tool-pill[open] summary:before{content:"▾ "}.tool-pill pre{padding:8px 12px;overflow-x:auto;color:var(--ink);max-height:320px}.composer,.tool-pill pre{border-top:1px solid var(--line)}.composer{display:flex;gap:8px;padding:12px 0 16px}.composer textarea{flex:1;background:var(--panel);border:1px solid var(--line);border-radius:10px;color:var(--ink);padding:10px 12px;font:inherit;resize:none;min-height:44px}.composer button{background:var(--accent);color:#fff;border:0;border-radius:10px;padding:0 18px;font:inherit;font-weight:600;cursor:pointer}.composer button:disabled{opacity:.5;cursor:default}.composer .stop{background:none;border:1px solid #f85149;color:#f85149;font-weight:600}.login{flex:1;display:flex;flex-direction:column;justify-content:center;gap:20px;max-width:360px;margin:0 auto;width:100%;padding:24px 0}.login-head h1{font-size:26px;margin-bottom:4px}.login form{display:flex;flex-direction:column;gap:12px}.login input{background:var(--panel);border:1px solid var(--line);border-radius:10px;color:var(--ink);padding:11px 12px;font:inherit}.login button{background:var(--accent);color:#fff;border:0;border-radius:10px;padding:11px;font:inherit;font-weight:600;cursor:pointer}.login .err{color:#f85149;font-size:13px}.login .hint{color:var(--muted);font-size:13px}