:root{--bg-primary: #0a0e17;--bg-secondary: #111827;--bg-card: rgba(17, 24, 39, .8);--bg-glass: rgba(17, 24, 39, .6);--border: rgba(59, 130, 246, .15);--border-focus: rgba(59, 130, 246, .5);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--accent: #3b82f6;--accent-hover: #2563eb;--accent-glow: rgba(59, 130, 246, .15);--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--info: #06b6d4;--sidebar-w: 240px;--radius: 12px;--radius-sm: 8px;--transition: .2s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:3px}.layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);background:var(--bg-secondary);border-right:1px solid var(--border);position:fixed;top:0;left:0;bottom:0;display:flex;flex-direction:column;z-index:50}.sidebar-brand{padding:24px 20px;border-bottom:1px solid var(--border)}.sidebar-brand h1{font-size:18px;font-weight:800;background:linear-gradient(135deg,var(--accent),#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px}.sidebar-brand p{font-size:11px;color:var(--text-muted);margin-top:4px}.sidebar-nav{flex:1;padding:12px;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:var(--radius-sm);color:var(--text-secondary);text-decoration:none;font-size:14px;font-weight:500;transition:var(--transition);margin-bottom:2px}.nav-item:hover{background:var(--accent-glow);color:var(--text-primary)}.nav-item.active{background:var(--accent-glow);color:var(--accent)}.nav-item svg{width:18px;height:18px;flex-shrink:0}.sidebar-footer{padding:16px;border-top:1px solid var(--border)}.logout-btn{width:100%;padding:10px;border-radius:var(--radius-sm);border:1px solid var(--border);background:transparent;color:var(--text-secondary);font-size:13px;cursor:pointer;transition:var(--transition)}.logout-btn:hover{border-color:var(--danger);color:var(--danger)}.main-content{margin-left:var(--sidebar-w);flex:1;padding:28px 32px;min-height:100vh}.page-header{margin-bottom:24px}.page-header h2{font-size:24px;font-weight:700;letter-spacing:-.5px}.page-header p{color:var(--text-muted);font-size:14px;margin-top:4px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.stat-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:20px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:var(--transition)}.stat-card:hover{border-color:var(--border-focus);transform:translateY(-2px)}.stat-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:8px}.stat-value{font-size:28px;font-weight:800;letter-spacing:-1px}.stat-value.blue{color:var(--accent)}.stat-value.green{color:var(--success)}.stat-value.yellow{color:var(--warning)}.stat-value.cyan{color:var(--info)}.stat-sub{font-size:12px;color:var(--text-muted);margin-top:4px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}thead th{text-align:left;padding:12px 16px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);border-bottom:1px solid var(--border);white-space:nowrap}tbody td{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.03);color:var(--text-secondary)}tbody tr:hover{background:var(--accent-glow)}tbody tr:hover td{color:var(--text-primary)}.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.3px}.badge.pending{background:#f59e0b26;color:var(--warning)}.badge.paid{background:#22c55e26;color:var(--success)}.badge.cancelled{background:#ef444426;color:var(--danger)}.badge.active{background:#22c55e26;color:var(--success)}.badge.inactive{background:#64748b26;color:var(--text-muted)}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:12px;font-weight:600;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}input,select,textarea{width:100%;padding:10px 14px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:14px;font-family:inherit;transition:var(--transition);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}textarea{min-height:100px;resize:vertical}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;border:none;cursor:pointer;transition:var(--transition);font-family:inherit}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-danger{background:#ef444426;color:var(--danger);border:1px solid rgba(239,68,68,.2)}.btn-danger:hover{background:#ef444440}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-ghost:hover{border-color:var(--text-secondary);color:var(--text-primary)}.btn-sm{padding:5px 12px;font-size:12px}.toolbar{display:flex;align-items:center;gap:12px;margin-bottom:16px}.toolbar .search-input{max-width:300px}.modal-overlay{position:fixed;inset:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:500px;max-height:90vh;overflow-y:auto;padding:24px}.modal h3{font-size:18px;font-weight:700;margin-bottom:20px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);padding:20px}.login-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;padding:40px;width:100%;max-width:400px}.login-card h1{font-size:24px;font-weight:800;margin-bottom:6px;background:linear-gradient(135deg,var(--accent),#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.login-card p{color:var(--text-muted);font-size:14px;margin-bottom:28px}.login-card .btn-primary{width:100%;justify-content:center;padding:12px;font-size:14px;margin-top:4px}.login-error{background:#ef44441a;border:1px solid rgba(239,68,68,.2);color:var(--danger);padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:16px}.chat-container{display:grid;grid-template-columns:300px 1fr;gap:16px;height:calc(100vh - 130px)}.chat-users{overflow-y:auto;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}.chat-user-item{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.03);cursor:pointer;transition:var(--transition)}.chat-user-item:hover,.chat-user-item.active{background:var(--accent-glow)}.chat-user-name{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.chat-user-last{font-size:12px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-messages{overflow-y:auto;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;gap:8px}.chat-bubble{max-width:75%;padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.5}.chat-bubble.user{align-self:flex-start;background:#64748b26;color:var(--text-primary);border-bottom-left-radius:4px}.chat-bubble.assistant{align-self:flex-end;background:var(--accent-glow);color:var(--text-primary);border-bottom-right-radius:4px}.chat-time{font-size:10px;color:var(--text-muted);margin-top:4px}.chat-empty{display:flex;align-items:center;justify-content:center;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-muted)}.knowledge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:16px}.knowledge-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;transition:var(--transition)}.knowledge-card:hover{border-color:var(--border-focus)}.knowledge-source{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--accent);margin-bottom:4px}.knowledge-section{font-size:15px;font-weight:600;margin-bottom:8px}.knowledge-content{font-size:13px;color:var(--text-muted);line-height:1.6;max-height:100px;overflow:hidden;white-space:pre-wrap}.knowledge-actions{display:flex;gap:8px;margin-top:12px}.loading{display:flex;align-items:center;justify-content:center;padding:60px;color:var(--text-muted)}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin-right:12px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:768px){.sidebar{display:none}.main-content{margin-left:0;padding:16px}.chat-container{grid-template-columns:1fr}.stat-grid{grid-template-columns:repeat(2,1fr)}}