:root{--primary:#173b64;--accent:#d7a84b;--bg:#f3f6f9;--surface:#fff;--text:#17202a;--muted:#667085;--danger:#b42318;--success:#067647}*{box-sizing:border-box}body{margin:0;font:14px/1.5 system-ui,-apple-system,"Segoe UI","Noto Sans","Noto Sans SC",sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.side{background:#102a46;color:#fff;padding:24px}.brand{font-weight:800;font-size:18px;margin-bottom:28px}.side a{display:block;color:#dbe7f3;padding:10px 12px;border-radius:8px;margin:3px 0}.side a:hover{background:#214b75}.main{padding:24px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.card{background:var(--surface);border:1px solid #e4e7ec;border-radius:12px;padding:18px;box-shadow:0 1px 2px #1018280d}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.metric strong{display:block;font-size:26px}.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:11px;border-bottom:1px solid #eaecf0;text-align:left}th{color:#475467;background:#f9fafb}input,select,button{font:inherit;padding:10px 12px;border:1px solid #d0d5dd;border-radius:8px}button,.btn{background:var(--primary);color:#fff;border:0;cursor:pointer;display:inline-block;padding:10px 14px;border-radius:8px}.alert{padding:12px;border-radius:8px;margin-bottom:14px}.alert-danger{background:#fee4e2;color:var(--danger)}.alert-success{background:#dcfae6;color:var(--success)}.login{max-width:420px;margin:10vh auto}.form-row{margin-bottom:14px}.form-row label{display:block;font-weight:600;margin-bottom:5px}.form-row input{width:100%}.badge{padding:3px 8px;border-radius:999px;background:#eaf1f8;font-size:12px}@media(max-width:800px){.shell{display:block}.side{padding:14px}.side nav{display:flex;overflow:auto}.side a{white-space:nowrap}.main{padding:14px}.grid{grid-template-columns:repeat(2,1fr)}table{display:block;overflow:auto}}@media(max-width:480px){.grid{grid-template-columns:1fr}}