:root{--bg: #0f172a;--bg-2: #1e293b;--panel: #ffffff;--panel-2: #f8fafc;--border: #e2e8f0;--text: #0f172a;--text-dim: #64748b;--primary: #2563eb;--primary-dark: #1d4ed8;--success: #16a34a;--warn: #d97706;--danger: #dc2626;--radius: 10px;--shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--panel-2);color:var(--text);-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:248px;background:var(--bg);color:#cbd5e1;display:flex;flex-direction:column;padding:16px 12px;position:sticky;top:0;height:100vh;overflow-y:auto}.sidebar .brand{font-weight:700;font-size:18px;color:#fff;padding:8px 12px 16px}.sidebar .brand small{display:block;font-weight:400;font-size:12px;color:#64748b}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:#cbd5e1;font-size:14px;cursor:pointer;margin-bottom:2px}.nav-link:hover{background:var(--bg-2);color:#fff}.nav-link.active{background:var(--primary);color:#fff}.nav-link.locked{opacity:.4;cursor:not-allowed}.nav-link .icon{width:18px;text-align:center}.nav-group-children{margin-left:10px;border-left:1px solid var(--bg-2);padding-left:4px}.nav-link.nav-child{font-size:13px;padding-left:12px}.main{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{height:56px;background:var(--panel);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 20px;position:sticky;top:0;z-index:5}.topbar .user{display:flex;align-items:center;gap:12px;font-size:14px}.content{padding:24px;flex:1}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card+.card{margin-top:16px}.page-title{font-size:22px;font-weight:700;margin:0 0 4px}.page-sub{color:var(--text-dim);margin:0 0 20px;font-size:14px}.grid{display:grid;gap:16px}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 900px){.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}.stat{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.stat .label{color:var(--text-dim);font-size:13px}.stat .value{font-size:26px;font-weight:700;margin-top:6px}.btn{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:#fff;border:none;padding:9px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer}.btn:hover{background:var(--primary-dark)}.btn.secondary{background:var(--panel-2);color:var(--text);border:1px solid var(--border)}.btn.danger{background:var(--danger)}.btn:disabled{opacity:.5;cursor:not-allowed}input,select,textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;color:var(--text)}label{display:block;font-size:13px;font-weight:500;margin-bottom:6px}.field{margin-bottom:14px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}th{color:var(--text-dim);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}tbody tr:hover{background:var(--panel-2)}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}.badge.gray{background:#f1f5f9;color:#475569}.badge.blue{background:#dbeafe;color:#1d4ed8}.badge.green{background:#dcfce7;color:#15803d}.badge.amber{background:#fef3c7;color:#b45309}.badge.red{background:#fee2e2;color:#b91c1c}.row{display:flex;gap:12px;align-items:center}.spacer{flex:1}.muted{color:var(--text-dim)}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f172a,#1e3a8a)}.auth-card{width:380px;background:#fff;border-radius:14px;padding:32px;box-shadow:0 20px 40px #0000004d}.auth-card h1{margin:0 0 4px;font-size:22px}.auth-card p.sub{color:var(--text-dim);margin:0 0 24px;font-size:14px}.divider{text-align:center;color:var(--text-dim);font-size:12px;margin:16px 0}.error-banner{background:#fee2e2;color:#b91c1c;padding:10px 14px;border-radius:8px;font-size:14px;margin-bottom:14px}.offline-banner{background:var(--warn);color:#fff;text-align:center;font-size:13px;padding:6px}.checkbox-grid{display:grid;grid-template-columns:repeat(5,auto);gap:8px 16px;align-items:center}.spinner{display:inline-block;width:18px;height:18px;border:2px solid #cbd5e1;border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-full{min-height:100vh;display:flex;align-items:center;justify-content:center}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:50;overflow-y:auto}.modal{width:100%;max-width:720px;background:var(--panel);max-height:calc(100vh - 80px);overflow-y:auto}