@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--blue:#2563eb;--blue-light:#eff6ff;--blue-dark:#1d4ed8;--green:#16a34a;--green-light:#f0fdf4;--red:#dc2626;--red-light:#fef2f2;--yellow:#d97706;--yellow-light:#fffbeb;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--bg-main:#f8fafc;--bg-card:#fff;--border:#e2e8f0;--border-focus:#2563eb;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-full:9999px;--shadow-sm:0 1px 3px #0000000d;--shadow-md:0 4px 12px #0000000f;--shadow-lg:0 10px 25px -3px #00000014;--transition:all .15s ease-in-out}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;line-height:1.5}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-main)}::-webkit-scrollbar-thumb{border-radius:var(--radius-full);background:#cbd5e1}::-webkit-scrollbar-thumb:hover{background:#94a3b8}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:600;line-height:1.3}a{color:var(--blue);transition:var(--transition);text-decoration:none}a:hover{color:var(--blue-dark)}.app-layout{min-height:100vh;display:flex}.sidebar{background:var(--bg-card);border-right:1px solid var(--border);z-index:40;flex-direction:column;width:250px;height:100vh;transition:transform .2s;display:flex;position:sticky;top:0}.sidebar-header{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:20px 18px;display:flex}.brand-badge{border-radius:var(--radius-md);background:var(--blue);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;font-size:20px;display:flex}.brand-info h2{color:var(--text-primary);font-size:15px;font-weight:700}.brand-info p{color:var(--text-muted);font-size:11px}.sidebar-nav{flex-direction:column;flex:1;gap:4px;padding:14px 12px;display:flex;overflow-y:auto}.nav-section-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);padding:12px 10px 4px;font-size:11px;font-weight:700}.nav-item{border-radius:var(--radius-md);color:var(--text-secondary);transition:var(--transition);cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:10px;width:100%;padding:9px 12px;font-size:13.5px;font-weight:500;display:flex}.nav-item:hover{background:var(--bg-main);color:var(--text-primary)}.nav-item.active{background:var(--blue-light);color:var(--blue);font-weight:600}.sidebar-footer{border-top:1px solid var(--border);background:var(--bg-main);justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.user-snippet{align-items:center;gap:10px;display:flex;overflow:hidden}.user-avatar{border-radius:var(--radius-full);background:var(--blue);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:13px;font-weight:700;display:flex}.user-details{overflow:hidden}.user-name{white-space:nowrap;text-overflow:ellipsis;color:var(--text-primary);font-size:13px;font-weight:600;overflow:hidden}.user-role-badge{background:var(--blue-light);color:var(--blue);border-radius:4px;padding:1px 6px;font-size:10.5px;font-weight:600;display:inline-block}.main-content{flex-direction:column;flex:1;min-width:0;display:flex}.topbar{background:var(--bg-card);border-bottom:1px solid var(--border);z-index:30;justify-content:space-between;align-items:center;height:60px;padding:0 28px;display:flex;position:sticky;top:0}.topbar-title h1{font-size:18px;font-weight:700}.topbar-actions{align-items:center;gap:12px;display:flex}.content-body{flex:1;width:100%;max-width:1360px;margin:0 auto;padding:28px}.glass-card,.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:var(--transition);padding:20px}.glass-card:hover,.card:hover{box-shadow:var(--shadow-md);border-color:#cbd5e1}.btn{border-radius:var(--radius-sm);font-family:var(--font-sans);cursor:pointer;transition:var(--transition);white-space:nowrap;border:1px solid #0000;outline:none;justify-content:center;align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:600;display:inline-flex}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark)}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover{background:var(--bg-main);border-color:#cbd5e1}.btn-success{background:var(--green-light);color:var(--green);border-color:#bbf7d0}.btn-success:hover{background:#bbf7d0}.btn-danger{background:var(--red-light);color:var(--red);border-color:#fecaca}.btn-danger:hover{background:#fee2e2}.btn-sm{padding:5px 10px;font-size:12px}.btn-icon{border-radius:var(--radius-sm);width:32px;height:32px;padding:0}.form-group{flex-direction:column;gap:5px;margin-bottom:16px;display:flex}.form-label{color:var(--text-secondary);font-size:12.5px;font-weight:600}.form-input,.form-select,.form-textarea{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);font-family:var(--font-sans);transition:var(--transition);outline:none;padding:9px 12px;font-size:13.5px}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--blue);box-shadow:0 0 0 2px var(--blue-light)}.form-textarea{resize:vertical;min-height:80px}.badge{border-radius:var(--radius-full);align-items:center;gap:4px;padding:3px 8px;font-size:11.5px;font-weight:600;display:inline-flex}.badge-indigo,.badge-blue{background:var(--blue-light);color:var(--blue)}.badge-emerald,.badge-green{background:var(--green-light);color:var(--green)}.badge-amber,.badge-yellow{background:var(--yellow-light);color:var(--yellow)}.badge-rose,.badge-red{background:var(--red-light);color:var(--red)}.grid-courses{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;display:grid}.grid-stats{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:24px;display:grid}.modal-overlay{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:100;background:#0f172a66;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-dialog{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);width:100%;max-width:540px;max-height:90vh;box-shadow:var(--shadow-lg);overflow-y:auto}.modal-dialog.large{max-width:800px}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-body{padding:20px}.modal-footer{border-top:1px solid var(--border);background:var(--bg-main);justify-content:flex-end;align-items:center;gap:10px;padding:14px 20px;display:flex}table{border-collapse:collapse;width:100%}th{background:var(--bg-main);color:var(--text-secondary);text-align:left;border-bottom:1px solid var(--border);padding:10px 14px;font-size:12.5px;font-weight:600}td{border-bottom:1px solid var(--border);color:var(--text-primary);padding:12px 14px;font-size:13px}tr:hover td{background:var(--bg-main)}@media (width<=900px){.sidebar{position:fixed;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.content-body{padding:16px}.topbar{padding:0 16px}}