*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #2563EB;--primary-dark: #1D4ED8;--primary-light: #EFF6FF;--sidebar-bg: #1E293B;--sidebar-text: #CBD5E1;--sidebar-active: #2563EB;--bg: #F1F5F9;--surface: #FFFFFF;--border: #E2E8F0;--text-primary: #0F172A;--text-secondary: #64748B;--success: #16A34A;--success-bg: #DCFCE7;--danger: #DC2626;--danger-bg: #FEE2E2;--warning: #D97706;--warning-bg: #FEF3C7;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);--shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);--shadow-lg: 0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text-primary);line-height:1.5;font-size:14px}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}a{text-decoration:none;color:inherit}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;border:none;transition:all .15s ease;white-space:nowrap}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-danger{background:var(--danger-bg);color:var(--danger)}.btn-danger:hover{background:#fecaca}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg)}.btn-sm{padding:5px 10px;font-size:13px}.btn:disabled{opacity:.6;cursor:not-allowed}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:13px;font-weight:500;color:var(--text-primary)}.form-input{padding:9px 12px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:14px;color:var(--text-primary);background:var(--surface);transition:border-color .15s;outline:none;width:100%}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.form-input.error{border-color:var(--danger)}.form-error{font-size:12px;color:var(--danger)}.table-wrapper{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px 16px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);background:var(--bg);border-bottom:1px solid var(--border)}td{padding:13px 16px;border-bottom:1px solid var(--border);color:var(--text-primary);font-size:14px}tr:last-child td{border-bottom:none}tr:hover td{background:#f8fafc}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}.badge-present{background:var(--success-bg);color:var(--success)}.badge-absent{background:var(--danger-bg);color:var(--danger)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-title{font-size:22px;font-weight:700;color:var(--text-primary)}.page-subtitle{font-size:13px;color:var(--text-secondary);margin-top:2px}.alert{padding:12px 16px;border-radius:var(--radius);font-size:14px;margin-bottom:16px}.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid #fca5a5}.alert-success{background:var(--success-bg);color:var(--success);border:1px solid #86efac}.app-layout{display:flex;min-height:100vh}.sidebar{width:240px;min-height:100vh;background:var(--sidebar-bg);display:flex;flex-direction:column;position:fixed;top:0;left:0;z-index:100}.sidebar-logo{padding:24px 20px;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-logo h1{font-size:17px;font-weight:700;color:#fff;letter-spacing:-.3px}.sidebar-logo span{font-size:11px;color:var(--sidebar-text);opacity:.7}.sidebar-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px}.nav-section-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:#475569;padding:8px 8px 4px;margin-top:8px}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:6px;color:var(--sidebar-text);font-size:14px;font-weight:500;transition:all .15s;text-decoration:none}.nav-link:hover{background:#ffffff12;color:#fff}.nav-link.active{background:var(--primary);color:#fff}.nav-link .nav-icon{font-size:16px;width:20px;text-align:center}.sidebar-footer{padding:16px 20px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#475569}.main-content{flex:1;margin-left:240px;display:flex;flex-direction:column;min-height:100vh}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 32px;height:60px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50;box-shadow:var(--shadow)}.topbar-title{font-size:15px;font-weight:600;color:var(--text-primary)}.topbar-right{display:flex;align-items:center;gap:12px}.admin-badge{display:flex;align-items:center;gap:8px;background:var(--primary-light);padding:6px 12px;border-radius:999px;font-size:13px;font-weight:500;color:var(--primary)}.page-content{padding:32px;flex:1}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:28px}.stat-card{background:var(--surface);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow);display:flex;align-items:center;gap:16px;transition:box-shadow .15s}.stat-card:hover{box-shadow:var(--shadow-md)}.stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}.stat-info h3{font-size:26px;font-weight:700;color:var(--text-primary);line-height:1}.stat-info p{font-size:13px;color:var(--text-secondary);margin-top:4px}.modal-overlay{position:fixed;inset:0;background:#0f172a80;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal{background:var(--surface);border-radius:12px;box-shadow:var(--shadow-lg);width:100%;max-width:480px;max-height:90vh;overflow-y:auto}.modal-header{padding:20px 24px 0;display:flex;align-items:center;justify-content:space-between}.modal-header h2{font-size:17px;font-weight:700;color:var(--text-primary)}.modal-close{background:none;border:none;font-size:20px;color:var(--text-secondary);cursor:pointer;padding:4px;line-height:1;border-radius:4px}.modal-close:hover{background:var(--bg)}.modal-body{padding:20px 24px}.modal-footer{padding:0 24px 20px;display:flex;gap:10px;justify-content:flex-end}.form-grid{display:flex;flex-direction:column;gap:16px}.section-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.section-card-header{padding:16px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.section-card-title{font-size:15px;font-weight:600;color:var(--text-primary)}.filters-bar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:20px;background:var(--surface);padding:16px 20px;border-radius:var(--radius);box-shadow:var(--shadow)}.filters-bar label{font-size:13px;font-weight:500;color:var(--text-secondary)}.filter-input{padding:8px 12px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:13px;outline:none;transition:border-color .15s;background:var(--bg);min-width:150px}.filter-input:focus{border-color:var(--primary)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;gap:12px;color:var(--text-secondary)}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;gap:12px;color:var(--text-secondary);text-align:center}.empty-icon{font-size:48px;opacity:.4}.empty-state h3{font-size:16px;font-weight:600;color:var(--text-primary)}.empty-state p{font-size:14px;max-width:280px}