@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--primary: #1A56DB;--primary-light: #3B82F6;--primary-dark: #1E40AF;--secondary: #0EA5E9;--success: #10B981;--success-light: #D1FAE5;--warning: #F59E0B;--warning-light: #FEF3C7;--danger: #EF4444;--danger-light: #FEE2E2;--info: #3B82F6;--info-light: #DBEAFE;--bg: #F8FAFC;--surface: #FFFFFF;--text-primary: #0F172A;--text-secondary: #64748B;--text-tertiary: #94A3B8;--border: #E2E8F0;--border-light: #F1F5F9;--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 6px -1px rgba(0,0,0,.06), 0 2px 4px -2px rgba(0,0,0,.06);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.06);--shadow-xl: 0 20px 25px -5px rgba(0,0,0,.08), 0 8px 10px -6px rgba(0,0,0,.06);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--transition-fast: .1s ease;--transition-base: .2s ease;--transition-slow: .3s ease-in-out;--sidebar-width: 260px}[data-theme=dark]{--bg: #0F172A;--surface: #1E293B;--text-primary: #F1F5F9;--text-secondary: #94A3B8;--text-tertiary: #64748B;--border: #334155;--border-light: #1E293B;--shadow-sm: 0 1px 2px rgba(0,0,0,.2);--shadow-md: 0 4px 6px rgba(0,0,0,.3)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg);color:var(--text-primary);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none;font-family:inherit}input,select,textarea{font-family:inherit}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform var(--transition-slow)}.sidebar-header{padding:24px 20px;border-bottom:1px solid var(--border)}.sidebar-logo{display:flex;align-items:center;gap:12px}.sidebar-logo-icon{width:40px;height:40px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff}.sidebar-logo-text h1{font-size:15px;font-weight:700;color:var(--text-primary)}.sidebar-logo-text p{font-size:11px;color:var(--text-secondary);margin-top:2px}.sidebar-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px}.sidebar-nav a,.sidebar-nav button{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:14px;font-weight:500;transition:all var(--transition-fast);width:100%;text-align:left}.sidebar-nav a:hover,.sidebar-nav button:hover{background:var(--border-light);color:var(--text-primary)}.sidebar-nav a.active{background:var(--primary);color:#fff;box-shadow:0 2px 8px #1a56db4d}.sidebar-nav a.active svg{color:#fff}.sidebar-user{padding:16px 20px;border-top:1px solid var(--border);display:flex;align-items:center;gap:12px}.sidebar-avatar{width:36px;height:36px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:14px}.sidebar-user-info{flex:1;min-width:0}.sidebar-user-info .name{font-size:13px;font-weight:600;color:var(--text-primary)}.sidebar-user-info .role{font-size:11px;color:var(--text-secondary)}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh}.page-header{padding:24px 32px 0}.page-header h2{font-size:24px;font-weight:700;color:var(--text-primary)}.page-header p{font-size:14px;color:var(--text-secondary);margin-top:4px}.page-content{padding:24px 32px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition-base)}.card:hover{box-shadow:var(--shadow-md)}.card-header{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.card-header h3{font-size:16px;font-weight:600}.card-body{padding:24px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 24px;display:flex;align-items:flex-start;gap:16px;box-shadow:var(--shadow-sm);transition:all var(--transition-base)}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.stat-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.stat-icon.blue{background:var(--info-light);color:var(--primary)}.stat-icon.green{background:var(--success-light);color:var(--success)}.stat-icon.amber{background:var(--warning-light);color:var(--warning)}.stat-icon.red{background:var(--danger-light);color:var(--danger)}.stat-info h4{font-size:12px;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.stat-info .value{font-size:28px;font-weight:700;color:var(--text-primary);line-height:1.1}.stat-info .subtext{font-size:12px;color:var(--text-tertiary);margin-top:4px}.students-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.student-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 20px;border-left:4px solid var(--border);transition:all var(--transition-base);cursor:pointer;position:relative}.student-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.student-card.status-online{border-left-color:var(--success)}.student-card.status-recently-seen,.student-card.status-dirty-offline{border-left-color:var(--warning)}.student-card.status-suspicious{border-left-color:#f97316}.student-card.status-critical{border-left-color:var(--danger)}.student-card.status-clean-offline,.student-card.status-exempt{border-left-color:var(--text-tertiary)}.student-card.status-temp-access{border-left-color:var(--secondary)}.student-card.status-no-device{border-left-color:var(--border)}.student-card.alarm-pulse{animation:alarmPulse 2s ease-in-out infinite}@keyframes alarmPulse{0%,to{box-shadow:var(--shadow-sm)}50%{box-shadow:0 0 0 3px #ef444426,var(--shadow-md)}}.student-card-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.student-status-dot{width:10px;height:10px;border-radius:var(--radius-full);flex-shrink:0}.student-status-dot.green{background:var(--success)}.student-status-dot.yellow{background:var(--warning)}.student-status-dot.orange{background:#f97316}.student-status-dot.red{background:var(--danger)}.student-status-dot.gray{background:var(--text-tertiary)}.student-status-dot.blue{background:var(--secondary)}.student-name{font-weight:600;font-size:14px;color:var(--text-primary);flex:1}.student-class{font-size:12px;color:var(--text-tertiary)}.student-card-details{display:flex;flex-wrap:wrap;gap:8px}.student-detail-badge{display:inline-flex;align-items:center;gap:4px;padding:4px 8px;border-radius:var(--radius-sm);font-size:12px;background:var(--border-light);color:var(--text-secondary)}.student-detail-badge svg{width:13px;height:13px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-md);font-size:14px;font-weight:500;transition:all var(--transition-fast);white-space:nowrap}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 3px #1a56db4d}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}.btn-secondary{background:var(--surface);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border-light)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#059669}.btn-sm{padding:6px 14px;font-size:13px}.btn-icon{width:36px;height:36px;padding:0;border-radius:var(--radius-md);display:inline-flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--border);color:var(--text-secondary);transition:all var(--transition-fast)}.btn-icon:hover{background:var(--border-light);color:var(--text-primary)}.form-group{margin-bottom:20px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-input,.form-select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;color:var(--text-primary);background:var(--surface);transition:border-color var(--transition-fast)}.form-input:focus,.form-select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1a56db1a}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 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var(--border);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:var(--surface);z-index:1}.detail-panel-body{padding:24px}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:12px 16px;font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border);background:var(--border-light)}td{padding:12px 16px;font-size:14px;border-bottom:1px solid var(--border);color:var(--text-primary)}tr:hover td{background:var(--border-light)}.top-bar{padding:16px 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:50}.top-bar-left{display:flex;align-items:center;gap:16px}.top-bar-right{display:flex;align-items:center;gap:12px}.notification-btn{position:relative;width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--border);color:var(--text-secondary);transition:all var(--transition-fast)}.notification-btn:hover{background:var(--border-light);color:var(--text-primary)}.notification-badge{position:absolute;top:-4px;right:-4px;min-width:18px;height:18px;border-radius:var(--radius-full);background:var(--danger);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 4px}.connection-status{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:4px 10px;border-radius:var(--radius-full)}.connection-status.connected{background:var(--success-light);color:#065f46}.connection-status.disconnected{background:var(--danger-light);color:#991b1b}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a56db,#0ea5e9);padding:20px}.login-card{background:var(--surface);border-radius:var(--radius-xl);padding:48px 40px;width:100%;max-width:420px;box-shadow:var(--shadow-xl)}.login-logo{text-align:center;margin-bottom:32px}.login-logo-icon{width:64px;height:64px;border-radius:var(--radius-lg);background:linear-gradient(135deg,var(--primary),var(--secondary));display:inline-flex;align-items:center;justify-content:center;font-size:32px;margin-bottom:16px}.login-logo h1{font-size:22px;font-weight:700;color:var(--text-primary)}.login-logo p{font-size:14px;color:var(--text-secondary);margin-top:4px}.login-error{background:var(--danger-light);color:#991b1b;padding:10px 16px;border-radius:var(--radius-md);font-size:13px;margin-bottom:16px}.charts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:24px}@media(max-width:1024px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.students-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}}@media(max-width:640px){.page-header,.page-content,.top-bar{padding-left:16px;padding-right:16px}.stats-grid{grid-template-columns:1fr 1fr}}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:16px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:fadeIn var(--transition-fast)}.modal-content{background-color:var(--surface);border-radius:var(--radius-lg);width:100%;max-width:500px;max-height:90vh;display:flex;flex-direction:column;box-shadow:var(--shadow-xl);overflow:hidden;animation:slideUp var(--transition-fast)}.modal-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.modal-header h3{font-size:16px;font-weight:600;color:var(--text-primary);margin:0}.modal-body{padding:20px;overflow-y:auto;flex:1}.modal-footer{padding:16px 20px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:flex-end;gap:12px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.text-sm{font-size:13px}.text-xs{font-size:12px}.text-muted{color:var(--text-secondary)}.font-semibold{font-weight:600}.w-full{width:100%}