:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-card: #1e293b;--bg-sidebar: #0b1120;--bg-input: #0f172a;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--accent: #3b82f6;--accent-hover: #2563eb;--accent-light: rgba(59, 130, 246, .15);--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--info: #3b82f6;--border: #1e3a5f;--border-light: #334155;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .3);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--font-xs: 11px;--font-sm: 13px;--font-base: 14px;--font-lg: 16px;--font-xl: 20px;--font-2xl: 24px;--font-3xl: 30px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:14px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-thumb:hover{background:var(--border-light)}.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-light)}.card-title{font-size:var(--font-lg);font-weight:600;color:var(--text-primary)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border:none;border-radius:var(--radius-sm);font-size:var(--font-sm);font-weight:500;cursor:pointer;transition:all .2s;line-height:1}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--accent);background:var(--accent-light)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:#ffffff0d;color:var(--text-primary)}.btn-danger{background:#ef444426;color:var(--danger);border:1px solid rgba(239,68,68,.3)}.btn-danger:hover{background:#ef444440}.btn-sm{padding:6px 12px;font-size:var(--font-xs)}.btn-lg{padding:12px 24px;font-size:var(--font-lg)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.form-label{display:block;font-size:var(--font-sm);font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-input{width:100%;padding:10px 14px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:var(--font-base);font-family:inherit;transition:border-color .2s;outline:none}.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.form-input::placeholder{color:var(--text-muted)}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:var(--font-xs);font-weight:600}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;transition:border-color .2s,transform .2s}.stat-card:hover{border-color:var(--border-light);transform:translateY(-2px)}.stat-label{font-size:var(--font-sm);color:var(--text-secondary);margin-bottom:8px}.stat-value{font-size:var(--font-2xl);font-weight:700;color:var(--text-primary)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px}.page-title{font-size:var(--font-2xl);font-weight:700;color:var(--text-primary)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;text-align:center;color:var(--text-muted)}.empty-state svg{margin-bottom:12px;opacity:.4}.empty-state p{font-size:var(--font-base)}.spinner{display:flex;align-items:center;justify-content:center;height:100vh}.spinner:after{content:"";width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}.table-wrapper{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--border)}table{width:100%;border-collapse:collapse;font-size:var(--font-sm)}th{text-align:left;padding:12px 16px;background:var(--bg-secondary);color:var(--text-secondary);font-weight:600;white-space:nowrap;border-bottom:1px solid var(--border)}td{padding:12px 16px;border-bottom:1px solid var(--border);color:var(--text-primary)}tr:last-child td{border-bottom:none}tr:hover td{background:#ffffff05}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-4{gap:16px}.mb-4{margin-bottom:16px}.mt-4{margin-top:16px}.p-4{padding:16px}@media(max-width:768px){.stats-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.page-header{flex-direction:column;align-items:flex-start}}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #0f0f13;--bg-card: #1a1a23;--bg-hover: #22222e;--bg-sidebar: #12121a;--border: #2a2a3a;--text: #e8e8f0;--text-secondary: #9090a8;--text-muted: #606078;--primary: #6366f1;--primary-hover: #818cf8;--primary-dim: rgba(99, 102, 241, .1);--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--info: #3b82f6;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(0,0,0,.3);--sidebar-w: 240px;--header-h: 56px}html,body,#root{height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-hover)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-layout{display:flex;height:100vh}.sidebar{width:var(--sidebar-w);background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;flex-shrink:0}.sidebar-logo{padding:20px 16px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.sidebar-logo svg{flex-shrink:0}.sidebar-logo span{font-size:18px;font-weight:700;background:linear-gradient(135deg,#6366f1,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-nav{padding:8px;flex:1}.nav-section{margin-bottom:4px}.nav-section-title{padding:8px 12px 4px;font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.nav-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;text-decoration:none}.nav-item:hover{background:var(--bg-hover);color:var(--text)}.nav-item.active{background:var(--primary-dim);color:var(--primary-hover)}.nav-item svg{width:18px;height:18px;flex-shrink:0}.nav-item .badge{margin-left:auto;background:var(--danger);color:#fff;font-size:10px;font-weight:600;padding:1px 6px;border-radius:10px}.main-area{flex:1;display:flex;flex-direction:column;overflow:hidden}.header{height:var(--header-h);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;flex-shrink:0;background:var(--bg)}.header-left{display:flex;align-items:center;gap:16px}.header-search{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 12px;color:var(--text);font-size:13px;width:280px;outline:none;transition:border-color .15s}.header-search:focus{border-color:var(--primary)}.header-right{display:flex;align-items:center;gap:12px}.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;color:#fff}.content{flex:1;overflow-y:auto;padding:24px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.card-title{font-size:16px;font-weight:600}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;display:flex;flex-direction:column;gap:4px}.stat-label{font-size:12px;color:var(--text-secondary);font-weight:500}.stat-value{font-size:28px;font-weight:700}.stat-change{font-size:12px;color:var(--success)}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px 12px;font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border)}td{padding:10px 12px;border-bottom:1px solid var(--border);font-size:13px}tr:hover td{background:var(--bg-hover)}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:100px;font-size:11px;font-weight:600}.badge-success{background:#22c55e26;color:var(--success)}.badge-warning{background:#f59e0b26;color:var(--warning)}.badge-danger{background:#ef444426;color:var(--danger)}.badge-info{background:#3b82f626;color:var(--info)}.badge-neutral{background:#9090a826;color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;border:none;cursor:pointer;transition:all .15s;text-decoration:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}.btn-sm{padding:4px 10px;font-size:12px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text)}.form-input,.form-select,.form-textarea{width:100%;padding:8px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:13px;outline:none;transition:border-color .15s}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary)}.form-textarea{min-height:80px;resize:vertical;font-family:inherit}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);width:90%;max-width:520px;max-height:85vh;overflow-y:auto;padding:24px}.modal-title{font-size:18px;font-weight:600;margin-bottom:20px}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .6s linear infinite;margin:40px auto}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state svg{width:48px;height:48px;margin-bottom:12px;opacity:.4}.empty-state p{font-size:14px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-title{font-size:22px;font-weight:700}.knowledge-content{line-height:1.7;font-size:14px}.knowledge-content h1{font-size:24px;margin:24px 0 12px}.knowledge-content h2{font-size:20px;margin:20px 0 10px}.knowledge-content h3{font-size:16px;margin:16px 0 8px}.knowledge-content p{margin-bottom:12px}.knowledge-content ul,.knowledge-content ol{padding-left:20px;margin-bottom:12px}.knowledge-content li{margin-bottom:4px}.knowledge-content code{background:var(--bg);padding:2px 6px;border-radius:4px;font-size:13px}.chat-container{display:flex;flex-direction:column;height:100%}.chat-messages{flex:1;overflow-y:auto;padding:16px 0}.chat-message{padding:12px 16px;border-radius:var(--radius);margin-bottom:12px;max-width:85%;font-size:13px;line-height:1.6}.chat-message.user{background:var(--primary-dim);margin-left:auto;border-bottom-right-radius:4px}.chat-message.assistant{background:var(--bg);border:1px solid var(--border);border-bottom-left-radius:4px}.chat-input-area{display:flex;gap:8px;padding-top:16px;border-top:1px solid var(--border)}.chat-input{flex:1;padding:10px 14px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:13px;outline:none}.chat-input:focus{border-color:var(--primary)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:40px;width:100%;max-width:400px}.login-logo{text-align:center;margin-bottom:32px}.login-logo h1{font-size:28px;font-weight:800;background:linear-gradient(135deg,#6366f1,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-logo p{color:var(--text-secondary);font-size:14px;margin-top:4px}@media(max-width:768px){.sidebar{position:fixed;left:-100%;top:0;height:100%;z-index:50;transition:left .2s}.sidebar.open{left:0}.main-area{margin-left:0}.stats-grid{grid-template-columns:1fr 1fr}.form-row{grid-template-columns:1fr}.page-header{flex-direction:column;gap:12px;align-items:flex-start}}