:root{--primary: #0066cc;--success: #28a745;--warning: #f57c00;--critical: #d32f2f;--info: #0288d1;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-600: #4b5563;--gray-800: #1f2937;--gray-900: #111827}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;color:var(--gray-900);background:var(--gray-50)}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--gray-900);color:#fff;display:flex;flex-direction:column;position:fixed;height:100vh;overflow-y:auto}.sidebar-header{padding:24px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-header h1{font-size:20px;margin-bottom:4px}.nav-menu{list-style:none;flex:1;padding:16px}.nav-menu li{margin-bottom:8px}.nav-menu a{display:block;padding:12px 16px;color:#fffc;text-decoration:none;border-radius:6px;transition:all .2s}.nav-menu a:hover{background:#ffffff1a;color:#fff}.nav-menu a.active{background:var(--primary);color:#fff}.sidebar-footer{padding:16px;border-top:1px solid rgba(255,255,255,.1)}.user-info{margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}.main-content{flex:1;margin-left:260px;padding:32px;max-width:1400px}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,var(--primary),#0052a3)}.login-card{background:#fff;padding:40px;border-radius:12px;box-shadow:0 10px 40px #0003;width:100%;max-width:420px}.login-header{text-align:center;margin-bottom:32px}.login-header h1{font-size:28px;margin-bottom:8px}.login-footer{margin-top:24px;text-align:center}.page-header{margin-bottom:32px;display:flex;justify-content:space-between;align-items:flex-start}.page-header h1{font-size:32px;margin-bottom:4px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-bottom:32px}.stat-card{background:#fff;padding:24px;border-radius:8px;box-shadow:0 1px 3px #0000001a;display:flex;align-items:center;gap:16px}.stat-card.critical{border-left:4px solid var(--critical)}.stat-card.warning{border-left:4px solid var(--warning)}.stat-icon{font-size:32px}.stat-content h3{font-size:32px;font-weight:700;margin-bottom:4px}.stat-content p{color:var(--gray-600);font-size:14px}.dashboard-section{background:#fff;padding:24px;border-radius:8px;box-shadow:0 1px 3px #0000001a;margin-bottom:24px}.dashboard-section h2{font-size:20px;margin-bottom:16px}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.filters{display:flex;gap:8px}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px;text-align:left;border-bottom:1px solid var(--gray-200)}th{background:var(--gray-50);font-weight:600;font-size:14px;color:var(--gray-600)}tbody tr:hover{background:var(--gray-50)}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:6px;font-weight:500;color:var(--gray-800)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}input,select,textarea{width:100%;padding:10px 14px;border:1px solid var(--gray-300);border-radius:6px;font-size:14px;transition:border-color .2s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}.btn{padding:10px 20px;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;background:var(--gray-200);color:var(--gray-900);text-decoration:none;display:inline-block}.btn:hover{background:var(--gray-300)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:#0052a3}.btn-logout{width:100%;background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2)}.btn-logout:hover{background:#fff3}.btn-sm{padding:6px 12px;font-size:13px}.btn:disabled{opacity:.5;cursor:not-allowed}.badge{display:inline-block;padding:4px 10px;border-radius:12px;font-size:12px;font-weight:600;background:var(--gray-200);color:var(--gray-800)}.badge-success{background:#d4edda;color:var(--success)}.badge-warning{background:#fff3cd;color:var(--warning)}.badge-critical{background:#f8d7da;color:var(--critical)}.badge-info{background:#d1ecf1;color:var(--info)}.badge-muted{background:var(--gray-100);color:var(--gray-600)}.alert{padding:12px 16px;border-radius:6px;margin-bottom:16px}.alert-error{background:#f8d7da;color:var(--critical);border:1px solid #f5c6cb}.link{color:var(--primary);text-decoration:none}.link:hover{text-decoration:underline}.text-muted{color:var(--gray-600)}.text-sm{font-size:13px}.ml-2{margin-left:8px}.mb-3{margin-bottom:24px}.card{background:#fff;padding:24px;border-radius:8px;box-shadow:0 1px 3px #0000001a}.card h3{margin-bottom:8px}.loading-container,.error-container,.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px}.loading-screen{min-height:100vh}.spinner{border:3px solid var(--gray-200);border-top:3px solid var(--primary);border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin-bottom:16px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}