:root{color:#1a1f2e;background:#f3f5f8;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;background:#f3f5f8}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#e2e8f0;padding:20px}.sidebar-title{font-size:20px;font-weight:700;margin-bottom:18px}.sidebar-nav{display:grid;gap:8px}.sidebar-link{color:#94a3b8;text-decoration:none;padding:10px 12px;border-radius:8px}.sidebar-link:hover{background:#1e293b;color:#e2e8f0}.sidebar-link-active{background:#1d4ed8;color:#eff6ff}.main-shell{display:grid;grid-template-rows:64px 1fr}.topbar{background:#fff;border-bottom:1px solid #e2e8f0;display:flex;align-items:center;justify-content:space-between;padding:0 20px}.content{padding:20px}.page-shell{padding:40px}.table-wrapper{overflow-x:auto;background:#fff;border:1px solid #e2e8f0;border-radius:10px}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px;border-bottom:1px solid #f1f5f9}button{cursor:pointer;border:none;border-radius:8px;background:#1d4ed8;color:#fff;padding:8px 12px}button:disabled{background:#94a3b8;cursor:not-allowed}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.stats-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:14px}.stats-title{color:#64748b;font-size:14px}.stats-value{font-size:24px;font-weight:700;margin-top:8px}.form-grid{display:grid;gap:12px;max-width:420px;margin-bottom:16px}.tab-row{display:flex;gap:8px}.tab-btn{background:#e2e8f0;color:#0f172a}.tab-btn-active{background:#1d4ed8;color:#fff}label{display:grid;gap:6px}input,select,textarea{border:1px solid #cbd5e1;border-radius:8px;padding:8px;font:inherit}.card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:14px;margin-bottom:16px}.modal-backdrop{position:fixed;inset:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;padding:16px}.modal-card{width:min(520px,100%);background:#fff;border-radius:10px;padding:16px;border:1px solid #e2e8f0}.modal-actions{display:flex;gap:10px;margin-top:10px}@media(max-width:900px){.app-shell{grid-template-columns:1fr}.sidebar{padding:12px}}html,body,#root{margin:0;width:100%;min-height:100%}