:root{--primary: #1B4F8A;--primary-dk: #133a6b;--accent: #D4A843;--bg: #F4F6FA;--card: #ffffff;--text: #1a1a2e;--muted: #6b7280;--border: #e2e8f0;--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--radius: 10px;--shadow: 0 2px 12px rgba(0,0,0,.08)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit;font-size:14px;border:none;border-radius:var(--radius);padding:9px 18px;transition:all .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dk)}.btn-accent{background:var(--accent);color:#fff}.btn-ghost{background:transparent;border:1.5px solid var(--border);color:var(--text)}.btn-ghost:hover{background:var(--border)}.btn-danger{background:var(--danger);color:#fff}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-bottom:20px}.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:600}.badge-green{background:#dcfce7;color:#166534}.badge-red{background:#fee2e2;color:#991b1b}.badge-yellow{background:#fef9c3;color:#854d0e}.badge-blue{background:#dbeafe;color:#1e40af}.badge-gray{background:#f1f5f9;color:#475569}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border)}th{background:var(--bg);font-weight:600;font-size:13px;color:var(--muted)}tr:hover td{background:#f8fafc}input,select,textarea{width:100%;padding:9px 12px;border:1.5px solid var(--border);border-radius:var(--radius);font-family:inherit;font-size:14px;background:#fff;color:var(--text);transition:border .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}label{display:block;font-size:13px;font-weight:600;margin-bottom:5px;color:var(--muted)}.form-group{margin-bottom:16px}.flex{display:flex}.flex-center{display:flex;align-items:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}@media (max-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.stat-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 24px;border-left:4px solid var(--primary)}.stat-card .stat-value{font-size:32px;font-weight:700;color:var(--primary)}.stat-card .stat-label{font-size:13px;color:var(--muted);margin-top:4px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:#fff;border-radius:var(--radius);padding:28px;width:520px;max-width:95vw;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0003}.modal h2{margin-bottom:20px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h1{font-size:22px;font-weight:700}.empty-state{text-align:center;padding:48px;color:var(--muted)}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:32px;text-align:center;cursor:pointer;transition:all .2s}.drop-zone:hover,.drop-zone.active{border-color:var(--primary);background:#f0f5ff}.drop-zone svg{margin-bottom:8px}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin:40px auto}@keyframes spin{to{transform:rotate(360deg)}}.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px;font-size:14px}.alert-error{background:#fee2e2;color:#991b1b}.alert-success{background:#dcfce7;color:#166534}.alert-info{background:#dbeafe;color:#1e40af}.sidebar{width:240px;height:100vh;background:var(--primary);color:#fff;flex-shrink:0;display:flex;flex-direction:column;overflow:hidden}.sidebar-nav{flex:1;overflow-y:auto;min-height:0}.sidebar-footer{flex-shrink:0;padding:14px 20px;border-top:1px solid rgba(255,255,255,.15)}.sidebar-logo{padding:24px 20px 16px;border-bottom:1px solid rgba(255,255,255,.15)}.sidebar-logo h2{font-size:18px;font-weight:800;letter-spacing:.3px}.sidebar-logo span{font-size:11px;opacity:.7;display:block}.nav-section{padding:16px 0 8px}.nav-section-label{font-size:10px;text-transform:uppercase;letter-spacing:1px;opacity:.55;padding:0 20px;margin-bottom:4px}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 20px;font-size:14px;cursor:pointer;opacity:.8;transition:all .15s}.nav-item:hover,.nav-item.active{opacity:1;background:#ffffff1f}.nav-item.active{border-left:3px solid var(--accent)}.main-content{flex:1;padding:28px 32px;overflow-y:auto;min-height:0}.layout{display:flex;height:100vh;overflow:hidden}.top-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 32px;background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}