*{margin:0;padding:0;box-sizing:border-box}:root{--sidebar-width: 260px;--color-bg: #f5f7fa;--color-sidebar: #1e293b;--color-sidebar-text: #cbd5e1;--color-sidebar-active: #334155;--color-primary: #3b82f6;--color-primary-hover: #2563eb;--color-danger: #ef4444;--color-success: #22c55e;--color-warning: #f59e0b;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-secondary: #64748b;--color-card: #ffffff;--radius: 8px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6}.app-layout{display:flex;height:100vh;overflow:hidden}.main-content{flex:1;overflow-y:auto;padding:24px 32px}.sidebar{width:var(--sidebar-width);background:var(--color-sidebar);color:var(--color-sidebar-text);display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{padding:20px 16px;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-header h1{font-size:18px;font-weight:700;color:#fff}.sidebar-nav{padding:12px 8px;flex:1;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius);cursor:pointer;transition:background .15s;font-size:14px;border:none;background:none;color:var(--color-sidebar-text);width:100%;text-align:left}.nav-item:hover{background:#ffffff14}.nav-item.active{background:var(--color-sidebar-active);color:#fff}.nav-item .nav-icon{font-size:18px;width:24px;text-align:center}.sidebar-sessions{border-top:1px solid rgba(255,255,255,.08);padding:12px 8px;overflow-y:auto;max-height:40vh}.sidebar-sessions h3{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:#64748b;padding:0 12px 8px}.session-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;cursor:pointer;border-radius:6px;font-size:13px;transition:background .15s}.session-item:hover{background:#ffffff0f}.session-item.active{background:#3b82f626;color:#93c5fd}.session-item-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.session-item-del{opacity:0;background:none;border:none;color:var(--color-danger);cursor:pointer;font-size:14px;padding:2px 6px;border-radius:4px}.session-item:hover .session-item-del{opacity:1}.btn-new-session{width:100%;padding:8px;margin-top:8px;background:var(--color-primary);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:13px;transition:background .15s}.btn-new-session:hover{background:var(--color-primary-hover)}.chat-page{display:flex;flex-direction:column;height:100%}.chat-header{padding-bottom:16px;border-bottom:1px solid var(--color-border);margin-bottom:16px}.chat-header h2{font-size:22px;font-weight:700}.chat-subtitle{font-size:13px;color:var(--color-text-secondary);margin-top:4px}.messages-container{flex:1;overflow-y:auto;padding-right:8px}.message{margin-bottom:16px;padding:12px 16px;border-radius:var(--radius)}.message.user{background:var(--color-card);border:1px solid var(--color-border)}.message.assistant{background:transparent}.message-role{font-size:12px;font-weight:600;color:var(--color-text-secondary);margin-bottom:6px;text-transform:uppercase}.thinking-block{margin:8px 0}.thinking-block summary{cursor:pointer;color:var(--color-text-secondary);font-size:13px;font-weight:500}.thinking-block pre{background:#f1f5f9;padding:10px 14px;border-radius:6px;font-size:13px;color:#475569;white-space:pre-wrap;margin-top:6px;overflow-x:auto}.tool-call{margin:6px 0;padding:8px 12px;background:#fff7ed;border-left:3px solid #f97316;border-radius:0 6px 6px 0;font-size:13px}.tool-result{margin:6px 0}.tool-result summary{cursor:pointer;font-size:13px;color:#059669}.tool-result pre{background:#ecfdf5;padding:8px 12px;border-radius:6px;font-size:12px;white-space:pre-wrap;margin-top:4px;overflow-x:auto;max-height:200px}.msg-content{font-size:14px;line-height:1.7}.msg-content p{margin:4px 0}.msg-content code{background:#f1f5f9;padding:2px 6px;border-radius:4px;font-size:13px}.msg-content pre{background:#1e293b;color:#e2e8f0;padding:14px 18px;border-radius:8px;overflow-x:auto;font-size:13px}.chat-input-area{padding-top:16px;border-top:1px solid var(--color-border);display:flex;gap:10px;align-items:flex-end}.chat-input-area textarea{flex:1;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;resize:none;min-height:44px;max-height:120px;font-family:inherit;outline:none;transition:border-color .15s}.chat-input-area textarea:focus{border-color:var(--color-primary)}.btn-send{padding:10px 20px;background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius);cursor:pointer;font-size:14px;font-weight:600;transition:background .15s}.btn-send:hover:not(:disabled){background:var(--color-primary-hover)}.btn-send:disabled{opacity:.5;cursor:not-allowed}.btn-stop{padding:10px 20px;background:var(--color-danger);color:#fff;border:none;border-radius:var(--radius);cursor:pointer;font-size:14px;font-weight:600}.streaming-indicator{display:flex;align-items:center;gap:8px;padding:6px 0;color:var(--color-primary);font-size:13px}.page-header{margin-bottom:24px}.page-header h2{font-size:22px;font-weight:700}.card{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius);padding:20px;margin-bottom:16px}.card h3{font-size:16px;margin-bottom:12px}.tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid var(--color-border);padding-bottom:0}.tab{padding:8px 16px;cursor:pointer;border:none;background:none;font-size:14px;color:var(--color-text-secondary);border-bottom:2px solid transparent;transition:all .15s}.tab:hover{color:var(--color-text)}.tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary);font-weight:600}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:4px;color:var(--color-text-secondary)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;font-family:inherit;outline:none}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--color-primary)}.btn{padding:8px 16px;border:1px solid var(--color-border);border-radius:var(--radius);cursor:pointer;font-size:14px;background:var(--color-card);color:var(--color-text);transition:all .15s}.btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover{background:var(--color-primary-hover)}.btn-danger{color:var(--color-danger);border-color:var(--color-danger)}.btn-danger:hover{background:var(--color-danger);color:#fff}.btn-sm{padding:4px 10px;font-size:12px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.tag{display:inline-block;padding:2px 8px;background:#f1f5f9;border-radius:12px;font-size:12px;color:var(--color-text-secondary);margin-right:4px}.empty-state{text-align:center;padding:48px 20px;color:var(--color-text-secondary)}.empty-state .empty-icon{font-size:48px;margin-bottom:12px}.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:12px;font-size:14px}.alert-info{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}.alert-success{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}.alert-error{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}.alert-warning{background:#fffbeb;border:1px solid #fde68a;color:#92400e}.metrics-row{display:flex;gap:24px;margin-bottom:20px}.metric{flex:1;background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius);padding:16px}.metric-value{font-size:28px;font-weight:700;color:var(--color-primary)}.metric-label{font-size:12px;color:var(--color-text-secondary);margin-top:4px}hr.divider{border:none;border-top:1px solid var(--color-border);margin:16px 0}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}