:root{--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #0f172a;--text-secondary: #475569;--text-tertiary: #94a3b8;--border: #e2e8f0;--accent: #3b82f6;--accent-hover: #2563eb;--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);--shadow-md: 0 4px 12px rgba(15, 23, 42, .08);--sidebar-width: 260px;--status-height: 48px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.5;color:var(--text-primary);background:var(--bg-secondary)}button{font:inherit;cursor:pointer;border:none;background:none}input,textarea{font:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-track{background:transparent}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--bg-secondary)}.login-card{width:100%;max-width:360px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-md);text-align:center}.login-card h1{margin:0 0 8px;font-size:28px}.login-card p{margin:0 0 24px;color:var(--text-secondary)}.login-card form{display:flex;flex-direction:column;gap:12px}.login-card input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-secondary)}.login-card button{padding:12px;background:var(--accent);color:#fff;border-radius:var(--radius-md);font-weight:500}.login-card button:disabled{opacity:.6;cursor:not-allowed}.login-error{color:var(--error);font-size:13px}.main-layout{display:flex;height:100vh;background:var(--bg-secondary)}.main-content{flex:1;display:flex;flex-direction:column;min-width:0}.sidebar{width:var(--sidebar-width);flex-shrink:0;display:flex;flex-direction:column;background:var(--bg-primary);border-right:1px solid var(--border)}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}.logo{font-size:20px;font-weight:700;color:var(--accent)}.icon-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);background:var(--bg-tertiary);font-size:18px;color:var(--text-primary)}.session-list{flex:1;overflow-y:auto;padding:8px}.session-empty{padding:24px;text-align:center;color:var(--text-tertiary)}.session-item{width:100%;text-align:left;padding:10px 12px;border-radius:var(--radius-md);margin-bottom:4px;color:var(--text-primary)}.session-item:hover{background:var(--bg-secondary)}.session-item.active{background:#eff6ff;color:var(--accent)}.session-name{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-meta{display:flex;align-items:center;gap:8px;margin-top:4px;font-size:12px;color:var(--text-secondary)}.session-running{color:var(--accent);font-weight:500}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border)}.text-btn{color:var(--text-secondary);font-size:13px}.text-btn:hover{color:var(--text-primary)}.chat-area{flex:1;display:flex;flex-direction:column;min-height:0;background:var(--bg-primary)}.message-list{flex:1;overflow-y:auto;padding:24px}.chat-empty{height:100%;display:flex;align-items:center;justify-content:center;color:var(--text-tertiary)}.message{width:fit-content;max-width:70%;margin-bottom:16px}.message.agent{margin-right:auto}.message.user{margin-left:auto}.message-role{font-size:12px;font-weight:500;color:var(--text-secondary);margin-bottom:4px}.message-text{padding:12px 16px;border-radius:var(--radius-lg);background:var(--bg-secondary);white-space:pre-wrap;word-break:break-word}.message.user .message-text{background:var(--accent);color:#fff}.message-thinking{margin-bottom:8px}.message-thinking details{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);padding:8px 12px;font-size:13px}.message-thinking summary{cursor:pointer;color:var(--text-secondary)}.message-thinking pre{margin:8px 0 0;white-space:pre-wrap;color:var(--text-secondary)}.message-tools{display:flex;flex-direction:column;gap:8px;margin-bottom:8px}.tool-call{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);padding:10px 12px;font-size:13px}.tool-name{font-weight:500;margin-bottom:6px}.tool-args,.tool-result{margin:0;padding:8px;background:var(--bg-secondary);border-radius:var(--radius-sm);white-space:pre-wrap;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.tool-result.error{background:#fef2f2;color:var(--error)}.composer{display:flex;align-items:flex-end;gap:12px;padding:16px 24px;border-top:1px solid var(--border);background:var(--bg-primary)}.composer textarea{flex:1;resize:none;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-secondary);min-height:48px;max-height:160px}.composer button{padding:12px 20px;background:var(--accent);color:#fff;border-radius:var(--radius-md);font-weight:500}.composer button:disabled{opacity:.5;cursor:not-allowed}.composer .abort-btn{background:var(--error)}.status-bar{height:var(--status-height);display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:var(--bg-primary);border-top:1px solid var(--border);font-size:13px}.status-model{color:var(--text-secondary)}.status-idle{color:var(--text-tertiary)}.status-running{color:var(--accent);font-weight:500}@media(max-width:768px){.sidebar{display:none}}