:root{--bg:#0f1115;--panel:#161922;--panel-2:#1c2030;--border:#262b3a;--text:#e6e8ee;--muted:#8a92a6;--accent:#6aa3ff;--accent-2:#3d6fcc;--user-bubble:#2a3247;--assistant-bubble:#1b1f2c;--danger:#ff6b6b}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,Roboto,Helvetica Neue,sans-serif;font-size:14px;line-height:1.5;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer}button,input,textarea{font-family:inherit;font-size:inherit}input,textarea{color:inherit;background:transparent;border:none;outline:none}.container{max-width:1100px;margin:0 auto;padding:24px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border);background:var(--panel)}.topbar h1{font-size:16px;margin:0;letter-spacing:.5px}.nav{display:flex;gap:16px}.nav a{color:var(--muted)}.nav a.active{color:var(--text)}.chat{display:grid;grid-template-columns:260px 1fr;height:calc(100vh - 57px)}.sidebar{border-right:1px solid var(--border);background:var(--panel);overflow-y:auto;display:flex;flex-direction:column}.sidebar-header{padding:12px;display:flex;gap:8px}.sidebar button.new{flex:1 1;padding:8px 12px;background:var(--accent-2);color:#fff;border:none;border-radius:6px;font-weight:500}.sidebar button.new:hover{background:var(--accent)}.session-list{padding:0 8px 16px}.session-item{display:block;padding:8px 12px;border-radius:6px;color:var(--muted);cursor:pointer;font-size:13px;margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.session-item.active,.session-item:hover{background:var(--panel-2);color:var(--text)}.chat-main{display:flex;flex-direction:column;background:var(--bg)}.messages{flex:1 1;overflow-y:auto;padding:24px}.empty-state{display:flex;align-items:center;justify-content:center;height:100%;color:var(--muted);font-size:13px}.message{display:flex;margin-bottom:12px}.message.user{justify-content:flex-end}.bubble{max-width:75%;padding:10px 14px;border-radius:12px;white-space:pre-wrap;word-wrap:break-word}.message.user .bubble{background:var(--user-bubble);border-bottom-right-radius:4px}.message.assistant .bubble{background:var(--assistant-bubble);border:1px solid var(--border);border-bottom-left-radius:4px}.cursor{display:inline-block;margin-left:2px;color:var(--accent);animation:blink 1s steps(1) infinite;font-weight:600}@keyframes blink{50%{opacity:0}}.composer{border-top:1px solid var(--border);padding:16px 24px;background:var(--panel);display:flex;gap:8px}.composer textarea{flex:1 1;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;resize:none;min-height:44px;max-height:160px}.composer button{background:var(--accent-2);color:#fff;border:none;border-radius:8px;padding:0 18px;font-weight:500}.composer button:hover:not(:disabled){background:var(--accent)}.composer button:disabled{opacity:.5;cursor:not-allowed}.composer button.cancel{background:var(--panel-2);color:var(--text);border:1px solid var(--border)}.dash-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:18px}.card .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.6px;margin-bottom:8px}.card .value{font-size:24px;font-weight:600}table.sessions{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--border);border-radius:10px;overflow:hidden}table.sessions td,table.sessions th{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}table.sessions th{background:var(--panel-2);color:var(--muted);font-weight:500;text-transform:uppercase;font-size:11px;letter-spacing:.5px}table.sessions tr:last-child td{border-bottom:none}table.sessions td.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.refresh-hint{color:var(--muted);font-size:12px;margin-top:8px}