:root{
  --bg:#f4f6f9;--card:#fff;--text:#1d2433;--muted:#6b7385;--line:#e3e7ee;
  --primary:#0b63c5;--primary-2:#e8f1fc;--ok:#127a3e;--ok-bg:#e6f5ec;--warn:#9a6200;--warn-bg:#fff4dc;
  --bad:#b42318;--bad-bg:#fdecea;--radius:10px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:20px;margin:0 0 14px}h2{font-size:16px;margin:0 0 10px}h3{font-size:15px;margin:0 0 8px}
.muted{color:var(--muted)}.small{font-size:12px}.num{text-align:right}.nowrap{white-space:nowrap}.bold{font-weight:600}
.red{color:var(--bad)}.green{color:var(--ok)}

/* Header + menu */
.top{background:#0d2a4f;color:#fff;display:flex;align-items:center;gap:16px;padding:0 16px;min-height:50px}
.top .brand{font-weight:700;font-size:16px;color:#fff;white-space:nowrap}
.top .groups{display:flex;gap:2px;overflow-x:auto;flex:1}
.top .groups a{color:#cfdcf0;padding:15px 12px;white-space:nowrap;border-bottom:3px solid transparent}
.top .groups a.on,.top .groups a:hover{color:#fff;text-decoration:none;border-bottom-color:#5fa8ff}
.top .me{display:flex;gap:10px;align-items:center;white-space:nowrap;color:#cfdcf0;font-size:13px}
.top .me a,.top .me button{color:#cfdcf0;background:none;border:0;cursor:pointer;font:inherit;padding:0}
.sub{background:#fff;border-bottom:1px solid var(--line);display:flex;gap:4px;padding:0 16px;overflow-x:auto}
.sub a{padding:10px 12px;color:var(--muted);white-space:nowrap;border-bottom:2px solid transparent}
.sub a.on{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.sub a:hover{text-decoration:none;color:var(--text)}
main{padding:18px 16px 40px;max-width:1500px;margin:0 auto}

/* Card / form */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:16px}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.row>.f{display:flex;flex-direction:column;gap:4px;min-width:150px;flex:1}
.row>.f.w2{flex:2}.row>.f.auto{flex:0 0 auto;min-width:0}
label.lb{font-size:12px;color:var(--muted);font-weight:600}
input,select,textarea{font:inherit;color:inherit;padding:7px 9px;border:1px solid #cdd3dd;border-radius:7px;background:#fff;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid #9cc5f5;border-color:var(--primary)}
input[type=checkbox],input[type=radio]{width:auto}
input[readonly]{background:#f3f5f8}
textarea{resize:vertical}
.check{display:inline-flex;gap:6px;align-items:center;cursor:pointer}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:7px;border:1px solid var(--primary);background:var(--primary);color:#fff;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.btn:hover{text-decoration:none;filter:brightness(1.07)}
.btn.ghost{background:#fff;color:var(--primary)}
.btn.danger{background:var(--bad);border-color:var(--bad)}
.btn.ok{background:var(--ok);border-color:var(--ok)}
.btn.sm{padding:4px 9px;font-size:12px}
.link{background:none;border:0;color:var(--primary);cursor:pointer;padding:0;font:inherit}
.btn-x{background:none;border:0;color:var(--bad);cursor:pointer;font-size:16px}
.toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;margin-bottom:12px}
.toolbar .left,.toolbar .right{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.filters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:12px}
.filters input,.filters select{width:auto;min-width:140px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px;overflow-x:auto}
.tabs a{padding:5px 12px;border-radius:20px;background:#fff;border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.tabs a.on{background:var(--primary);border-color:var(--primary);color:#fff}

/* Alerts / badges */
.alert{padding:10px 14px;border-radius:8px;margin-bottom:12px;border:1px solid}
.alert.ok{background:var(--ok-bg);border-color:#b4e0c4;color:var(--ok)}
.alert.err{background:var(--bad-bg);border-color:#f3c1bb;color:var(--bad)}
.alert.warn{background:var(--warn-bg);border-color:#f0d9a3;color:var(--warn)}
.alert ul{margin:4px 0 0;padding-left:18px}
.badge{display:inline-block;padding:1px 8px;border-radius:12px;font-size:12px;font-weight:600;background:#eef0f4;color:var(--muted);white-space:nowrap}
.badge.ok{background:var(--ok-bg);color:var(--ok)}.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.bad{background:var(--bad-bg);color:var(--bad)}.badge.info{background:var(--primary-2);color:var(--primary)}

/* Tables */
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:12px;color:var(--muted);font-weight:600;background:#f8f9fb;white-space:nowrap}
tbody tr:hover{background:#fafbfd}
tfoot td{font-weight:600;background:#f8f9fb}
tr.off td{color:var(--muted)}
.err-cell{color:var(--bad);font-size:12px;border-bottom:1px solid var(--line)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:16px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.stat .v{font-size:20px;font-weight:700}.stat .k{font-size:12px;color:var(--muted)}
dl.info{display:grid;grid-template-columns:max-content 1fr;gap:6px 16px;margin:0}
dl.info dt{color:var(--muted)}dl.info dd{margin:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* Lines editor */
.lines td{vertical-align:top}
.lines .it{min-width:180px}
.lines .qty{width:80px}.lines .cost{width:130px}
.lines .ser{min-width:200px;font-family:ui-monospace,Consolas,monospace;font-size:13px}
.lines .sercell.dim textarea{opacity:.45}
.serial-chips{font-family:ui-monospace,Consolas,monospace;font-size:12px;color:var(--muted);word-break:break-all}
dialog.picker{border:0;border-radius:12px;padding:16px;width:min(460px,94vw);max-height:85vh}
dialog.picker .plist{max-height:50vh;overflow:auto;border:1px solid var(--line);border-radius:8px;padding:6px 10px;margin:8px 0;font-family:ui-monospace,Consolas,monospace}
dialog.picker .plist label{display:flex;gap:8px;padding:3px 0}
.pager{margin-top:12px;display:flex;gap:4px;flex-wrap:wrap}
.pager a,.pager span{padding:4px 10px;border:1px solid var(--line);border-radius:6px;background:#fff}
.pager .on{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Báo cáo */
.charts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:16px}
.charts .wide{grid-column:span 2}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:7px;overflow:hidden}
.seg button{background:#fff;border:0;padding:4px 10px;font:inherit;font-size:12px;color:var(--muted);cursor:pointer}
.seg button.on{background:var(--primary);color:#fff}
.chart-table{display:none;margin-top:10px;max-height:320px;overflow:auto}
.chart-table.show{display:block}
.stat .d{font-size:12px;margin-top:2px}
.pl td.num{white-space:nowrap}
.pl tr.sum td{font-weight:700;border-top:2px solid var(--line)}
.pl tr.child td:first-child{padding-left:26px;color:var(--muted)}
.secnav{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.secnav a{padding:5px 12px;border-radius:20px;background:#fff;border:1px solid var(--line)}

/* Login */
.login{max-width:380px;margin:9vh auto;padding:0 16px}
.login .card{padding:24px}

@media (max-width:720px){
  main{padding:14px 12px 40px}
  .top{flex-wrap:wrap;gap:0;padding:0 12px}
  .top .brand{padding:10px 0;flex:1}
  .top .groups{order:3;flex-basis:100%}
  .top .groups a{padding:10px 10px}
  .row>.f{min-width:100%}
  input,select,textarea{font-size:16px}
  .filters input,.filters select,.filters .btn{width:100%}
  .grid2{grid-template-columns:1fr}
  .charts{grid-template-columns:1fr}
  .charts .wide{grid-column:auto}
  table.cardable thead{display:none}
  table.cardable,table.cardable tbody,table.cardable tr,table.cardable td,table.cardable tfoot{display:block;width:100%}
  table.cardable tr{border:1px solid var(--line);border-radius:10px;margin-bottom:10px;padding:6px 10px;background:#fff}
  table.cardable td{border:0;padding:4px 0;display:flex;gap:10px;justify-content:space-between;text-align:right}
  table.cardable td::before{content:attr(data-label);color:var(--muted);font-size:12px;text-align:left;flex:0 0 40%}
  table.cardable td:first-child{font-weight:600;border-bottom:1px solid var(--line);padding-bottom:6px;margin-bottom:4px;text-align:left}
  table.cardable td:first-child::before{display:none}
  table.cardable td[data-label=""]::before{display:none}
  table.cardable td>input,table.cardable td>textarea,table.cardable td>select{flex:1}
  .lines td{flex-direction:column;text-align:left}
  .lines td::before{flex:none}
  .lines .qty,.lines .cost{width:100%}
}
@media print{.top,.sub,.no-print{display:none!important}main{padding:0}.card{border:0}}