:root{--brand:#145da0;--brand-dark:#0c3a66;--brand-light:#e8f1fb;--green:#1f8a4c;--amber:#b8860b;--red:#b3261e;--bg:#f5f7fa;--card:#fff;--border:#e1e5eb;--text:#1c2733;--text-muted:#6b7686;--radius:10px}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app-shell{flex-direction:column;min-height:100vh;display:flex}.page-content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:24px 32px}.page-loading{text-align:center;color:var(--text-muted);padding:60px}.navbar{background:var(--card);border-bottom:1px solid var(--border);z-index:10;justify-content:space-between;align-items:center;padding:12px 32px;display:flex;position:sticky;top:0}.navbar-brand{align-items:center;gap:10px;font-weight:700;display:flex}.brand-mark{background:var(--brand);color:#fff;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;font-size:13px;display:flex}.brand-name{color:var(--brand-dark);font-size:15px}.navbar-links{gap:20px;display:flex}.navbar-links a{color:var(--text);font-size:14px;font-weight:500;text-decoration:none}.navbar-links a:hover{color:var(--brand)}.navbar-user{align-items:center;gap:12px;font-size:14px;display:flex}.user-name{font-weight:600}.role-badge{background:var(--brand-light);color:var(--brand-dark);text-transform:capitalize;border-radius:999px;padding:2px 10px;font-size:12px}.points-badge{color:var(--amber);background:#fff4d6;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600}.btn-link{color:var(--brand);cursor:pointer;background:0 0;border:none;padding:0;font-size:14px}.btn-link:hover{text-decoration:underline}.login-page{background:linear-gradient(135deg, var(--brand-dark), var(--brand));justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--card);border-radius:var(--radius);width:380px;padding:40px;box-shadow:0 20px 60px #00000040}.login-card h1{color:var(--brand-dark);margin:0 0 4px;font-size:20px}.login-card p.subtitle{color:var(--text-muted);margin:0 0 24px;font-size:13px}.demo-accounts{border-top:1px solid var(--border);color:var(--text-muted);margin-top:20px;padding-top:16px;font-size:12px;line-height:1.6}.field{margin-bottom:16px}.field label{color:var(--text);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.field input,.field select,.field textarea{border:1px solid var(--border);border-radius:8px;width:100%;padding:10px 12px;font-family:inherit;font-size:14px}.field textarea{resize:vertical;min-height:70px}.btn{background:var(--brand);color:#fff;cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:10px 18px;font-size:14px;font-weight:600;display:inline-flex}.btn:hover{background:var(--brand-dark)}.btn.secondary{color:var(--brand);border:1px solid var(--brand);background:#fff}.btn.secondary:hover{background:var(--brand-light)}.btn.danger{color:var(--red);border:1px solid var(--red);background:#fff}.btn.danger:hover{background:#fdecea}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.small{padding:6px 12px;font-size:13px}.error-banner{color:var(--red);background:#fdecea;border-radius:8px;margin-bottom:16px;padding:10px 14px;font-size:13px}.success-banner{color:var(--green);background:#e9f7ef;border-radius:8px;margin-bottom:16px;padding:10px 14px;font-size:13px}.page-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.page-header h1{color:var(--brand-dark);margin:0;font-size:22px}.page-header .subtitle{color:var(--text-muted);margin-top:4px;font-size:14px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;padding:20px}.card h3{margin:0 0 8px;font-size:16px}.card-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.stat-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;margin-bottom:24px;display:grid}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px}.stat-card .stat-value{color:var(--brand-dark);font-size:26px;font-weight:700}.stat-card .stat-label{color:var(--text-muted);margin-top:4px;font-size:12px}.tabs{border-bottom:2px solid var(--border);gap:4px;margin-bottom:20px;display:flex}.tab-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-2px;padding:10px 16px;font-size:14px;font-weight:600}.tab-btn.active{color:var(--brand);border-bottom-color:var(--brand)}.badge{border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;display:inline-block}.badge.draft{color:#555;background:#eee}.badge.pending{color:var(--amber);background:#fff4d6}.badge.published{color:var(--green);background:#e9f7ef}.badge.archived{color:#999;background:#f0f0f0}.badge.enrolled{background:var(--brand-light);color:var(--brand-dark)}.badge.in_progress{color:var(--amber);background:#fff4d6}.badge.completed{color:var(--green);background:#e9f7ef}.badge.topic{color:#4338ca;background:#eef2ff}.badge.path{color:#047857;background:#ecfdf5}.badge.unassigned{color:#aaa;background:#f5f5f5}.badge.clickable{cursor:pointer}.badge.clickable:hover{filter:brightness(.95)}.matrix-scroll{overflow-x:auto}.matrix-table th,.matrix-table td{white-space:nowrap}.matrix-table td:first-child,.matrix-table th:first-child{white-space:normal;background:#fff;position:sticky;left:0}.progress-bar{background:#eef1f5;border-radius:999px;height:8px;margin:8px 0;overflow:hidden}.progress-bar-fill{background:var(--brand);border-radius:999px;height:100%;transition:width .3s}.progress-bar-fill.complete{background:var(--green)}table.data-table{border-collapse:collapse;background:var(--card);width:100%}table.data-table th,table.data-table td{text-align:left;border-bottom:1px solid var(--border);padding:10px 14px;font-size:14px}table.data-table th{color:var(--text-muted);text-transform:uppercase;font-size:12px;font-weight:600}.quiz-overlay{z-index:50;background:#1c2733;flex-direction:column;display:flex;position:fixed;inset:0}.quiz-header{background:var(--brand);color:#fff;justify-content:space-between;align-items:center;padding:16px 32px;display:flex}.quiz-header .quiz-progress-track{background:#ffffff4d;border-radius:999px;flex:1;height:6px;margin:0 24px;overflow:hidden}.quiz-header .quiz-progress-fill{background:#fff;border-radius:999px;height:100%}.quiz-body{flex:1;justify-content:center;align-items:flex-start;padding:60px 20px;display:flex}.quiz-question-card{border-radius:var(--radius);background:#fff;width:100%;max-width:640px;overflow:hidden}.quiz-question-card .q-header{border-bottom:1px solid var(--border);padding:20px 24px;font-weight:700}.quiz-question-card .q-text{color:var(--text);padding:4px 24px 20px}.quiz-choice{border-top:1px solid var(--border);cursor:pointer;align-items:center;gap:12px;padding:16px 24px;font-size:14px;display:flex}.quiz-choice:hover{background:var(--brand-light)}.quiz-choice input{width:16px;height:16px}.quiz-footer{justify-content:flex-end;gap:12px;padding:16px 24px;display:flex}.quiz-result-card{border-radius:var(--radius);text-align:center;background:#fff;max-width:480px;padding:32px}.quiz-result-card .score{margin:12px 0;font-size:48px;font-weight:800}.quiz-result-card .score.pass{color:var(--green)}.quiz-result-card .score.fail{color:var(--red)}.quiz-close-btn{color:#fff;cursor:pointer;background:0 0;border:1px solid #fff9;border-radius:8px;padding:6px 12px}.locked-item{opacity:.5}.lock-icon{margin-right:6px}.empty-state{text-align:center;color:var(--text-muted);padding:40px}.path-item-row{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 0;display:flex}.path-item-row:last-child{border-bottom:none}.checklist{border:1px solid var(--border);border-radius:8px;max-height:220px;padding:8px;overflow-y:auto}.checklist label{align-items:center;gap:8px;padding:6px 4px;font-size:14px;display:flex}.question-block{border:1px solid var(--border);border-radius:8px;margin-bottom:12px;padding:16px}.choice-row{align-items:center;gap:8px;margin-bottom:8px;display:flex}.choice-row input[type=text]{flex:1}