:root{--bg-primary: #0f1117;--bg-secondary: #1a1d27;--bg-tertiary: #242836;--bg-card: #1e2230;--bg-hover: #2a2e3d;--text-primary: #e8eaed;--text-secondary: #9aa0b0;--text-muted: #6b7280;--accent: #6c5ce7;--accent-light: #a29bfe;--accent-soft: rgba(108, 92, 231, .15);--success: #00b894;--warning: #fdcb6e;--danger: #e17055;--info: #74b9ff;--border: #2d3148;--border-hover: #3d4260;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0,0,0,.3);--shadow-md: 0 4px 12px rgba(0,0,0,.4);--shadow-lg: 0 8px 30px rgba(0,0,0,.5);--font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--sidebar-width: 260px;--topbar-height: 0px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform .3s ease}.sidebar-header{padding:20px;border-bottom:1px solid var(--border)}.sidebar-logo{display:flex;align-items:center;gap:10px}.sidebar-logo-icon{width:36px;height:36px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--accent),var(--accent-light));display:flex;align-items:center;justify-content:center;font-size:18px}.sidebar-logo h1{font-size:16px;font-weight:700;color:var(--text-primary)}.sidebar-logo span{font-size:11px;color:var(--text-muted);display:block}.sidebar-nav{flex:1;padding:12px;display:flex;flex-direction:column;gap:4px}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:var(--radius-md);color:var(--text-secondary);text-decoration:none;font-size:14px;font-weight:500;transition:all .2s ease;cursor:pointer;border:none;background:none;width:100%;text-align:left}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--accent-soft);color:var(--accent-light)}.nav-item-icon{font-size:18px;width:24px;text-align:center}.sidebar-footer{padding:16px;border-top:1px solid var(--border)}.user-info{display:flex;align-items:center;gap:10px}.user-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--info));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}.user-details{flex:1}.user-name{font-size:13px;font-weight:600;color:var(--text-primary)}.user-role{font-size:11px;color:var(--text-muted)}.btn-logout{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;font-size:16px;transition:color .2s}.btn-logout:hover{color:var(--danger)}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh;display:flex;flex-direction:column}.page-container{flex:1;padding:24px;max-width:1400px;width:100%;margin:0 auto}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;transition:border-color .2s}.card:hover{border-color:var(--border-hover)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.card-title{font-size:16px;font-weight:600}.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:var(--radius-md);font-size:14px;font-weight:500;font-family:var(--font-family);cursor:pointer;border:1px solid transparent;transition:all .2s ease}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-light);box-shadow:0 4px 15px #6c5ce766}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--border-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.85}.btn-sm{padding:5px 12px;font-size:12px}.input,.textarea,.select{width:100%;padding:10px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;font-family:var(--font-family);outline:none;transition:border-color .2s}.input:focus,.textarea:focus,.select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.input::placeholder,.textarea::placeholder{color:var(--text-muted)}.textarea{resize:vertical;min-height:80px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.data-table-container{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--border)}.data-table{width:100%;border-collapse:collapse;font-size:13px}.data-table th{background:var(--bg-tertiary);padding:10px 14px;text-align:left;font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border);white-space:nowrap}.data-table td{padding:8px 14px;border-bottom:1px solid var(--border);color:var(--text-primary)}.data-table tr:hover td{background:var(--bg-hover)}.data-table tr:last-child td{border-bottom:none}.chat-container{flex:1;display:flex;flex-direction:column;height:calc(100vh - 48px)}.chat-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.chat-message{max-width:85%;animation:fadeInUp .3s ease}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-message.user{align-self:flex-end}.chat-message.assistant{align-self:flex-start}.message-bubble{padding:12px 16px;border-radius:var(--radius-lg);font-size:14px;line-height:1.5}.user .message-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.assistant .message-bubble{background:var(--bg-card);border:1px solid var(--border);border-bottom-left-radius:4px}.chat-input-area{padding:16px 20px;background:var(--bg-secondary);border-top:1px solid var(--border)}.chat-input-wrapper{display:flex;gap:10px;align-items:center;max-width:900px;margin:0 auto}.chat-input{flex:1;padding:12px 18px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-xl);color:var(--text-primary);font-size:14px;font-family:var(--font-family);outline:none;transition:border-color .2s}.chat-input:focus{border-color:var(--accent)}.chat-send-btn{width:42px;height:42px;border-radius:50%;background:var(--accent);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;transition:all .2s;flex-shrink:0}.chat-send-btn:hover{background:var(--accent-light);box-shadow:0 4px 15px #6c5ce766}.chat-send-btn:disabled{opacity:.4;cursor:not-allowed}.pipeline-steps{display:flex;flex-direction:column;gap:6px;margin:8px 0}.pipeline-step{display:flex;align-items:center;gap:8px;font-size:12px;padding:6px 10px;border-radius:var(--radius-sm);background:var(--bg-tertiary)}.step-icon{width:18px;height:18px;display:flex;align-items:center;justify-content:center;font-size:12px}.step-icon.running{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.step-icon.done{color:var(--success)}.step-icon.error{color:var(--danger)}.step-label{color:var(--text-secondary);font-weight:500}.step-detail{color:var(--text-muted);margin-left:auto;font-size:11px;max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sql-viewer{background:#1a1b26;border:1px solid var(--border);border-radius:var(--radius-md);padding:14px;font-family:JetBrains Mono,Fira Code,monospace;font-size:13px;color:#a9b1d6;overflow-x:auto;white-space:pre-wrap;word-break:break-all;margin:8px 0;position:relative}.sql-viewer-toggle{font-size:12px;color:var(--accent-light);background:none;border:none;cursor:pointer;padding:4px 0;display:flex;align-items:center;gap:4px}.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.kpi-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;text-align:center;transition:all .3s ease}.kpi-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-md)}.kpi-value{font-size:32px;font-weight:700;color:var(--accent-light);margin-bottom:4px}.kpi-label{font-size:13px;color:var(--text-muted)}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0f1117,#1a1d27,#242836)}.login-card{width:380px;padding:36px;background:#1e2230d9;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}.login-header{text-align:center;margin-bottom:28px}.login-header h1{font-size:24px;font-weight:700;margin-bottom:4px;background:linear-gradient(135deg,var(--accent-light),var(--info));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.login-header p{color:var(--text-muted);font-size:13px}.login-error{background:#e170551f;border:1px solid rgba(225,112,85,.3);color:var(--danger);padding:8px 12px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:14px}.tabs{display:flex;gap:2px;background:var(--bg-tertiary);border-radius:var(--radius-md);padding:3px;margin-bottom:20px}.tab{flex:1;padding:8px 16px;border:none;background:none;color:var(--text-secondary);font-size:13px;font-weight:500;font-family:var(--font-family);cursor:pointer;border-radius:var(--radius-sm);transition:all .2s}.tab.active{background:var(--accent);color:#fff}.tab:hover:not(.active){color:var(--text-primary)}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600}.badge-success{background:#00b89426;color:var(--success)}.badge-danger{background:#e1705526;color:var(--danger)}.badge-info{background:#74b9ff26;color:var(--info)}.badge-warning{background:#fdcb6e26;color:var(--warning)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:24px;width:90%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}.modal-title{font-size:18px;font-weight:600;margin-bottom:16px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}.chart-container{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;margin:8px 0}.insight-section{margin:8px 0}.insight-item{display:flex;align-items:flex-start;gap:8px;padding:8px 12px;background:var(--bg-tertiary);border-radius:var(--radius-sm);margin-bottom:6px;font-size:13px}.insight-icon{flex-shrink:0;margin-top:2px}.db-selector{padding:8px 16px;display:flex;align-items:center;gap:10px;background:var(--bg-secondary);border-bottom:1px solid var(--border)}.db-selector label{font-size:13px;color:var(--text-muted);white-space:nowrap}.db-selector select{flex:1;max-width:300px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;color:var(--text-muted);text-align:center}.empty-state-icon{font-size:48px;margin-bottom:16px;opacity:.5}.empty-state h3{font-size:18px;color:var(--text-secondary);margin-bottom:8px}.empty-state p{font-size:14px;max-width:400px}@media(max-width:768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.page-container{padding:16px}}