:root{
  --bg:#f4f6f9; --card:#fff; --text:#1d2433; --muted:#6b7385; --line:#e2e6ee; --grid:#eef0f4;
  --primary:#0f6fde; --primary-ink:#fff; --soft:#eef4fd;
  --good:#1a7f45; --good-bg:#e6f4ec; --warn:#9a5b00; --warn-bg:#fff4e0; --bad:#c0352b; --bad-bg:#fbe9e7; --info:#2a5d9f; --info-bg:#eaf1fb;
  --series-1:#2a78d6; --series-2:#eb6834; --series-3:#1baf7a;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:15px}
header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.wrap{max-width:1250px;margin:0 auto;padding:0 16px}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;flex-wrap:wrap}
.brand{font-weight:700;font-size:18px}
.brand small{display:block;font-weight:400;color:var(--muted);font-size:12px}
.who{display:flex;align-items:center;gap:8px;font-size:13px;flex-wrap:wrap}
.sync-info{font-size:12px;color:var(--muted);max-width:330px}
nav{display:flex;gap:4px;overflow-x:auto;padding:5px;margin-bottom:10px;border-radius:5px;background:linear-gradient(135deg,#1f4e8c,#2b6cb8)}
nav button{border:0;background:transparent;padding:8px 16px;border-radius:3px;cursor:pointer;font-size:14px;color:rgba(255,255,255,.85);white-space:nowrap}
nav button:hover{background:rgba(255,255,255,.14);color:#fff}
nav button.active{background:#fff;color:#1f4e8c;font-weight:700}
main{padding:16px 0 60px}
.center{text-align:center;padding:60px 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:16px}
.card h2{margin:0 0 12px;font-size:17px}
.card h3{margin:16px 0 8px;font-size:15px}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.card-head h2{margin:0}
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.grid2{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(420px,1fr))}
.grid2>.card{margin-bottom:0}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}
input,select,textarea{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff;color:var(--text)}
textarea{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;line-height:1.5}
input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);outline-offset:-1px}
.btn{display:inline-block;border:1px solid var(--line);background:#fff;padding:8px 14px;border-radius:8px;cursor:pointer;font:inherit;font-size:14px;color:var(--text);text-decoration:none;white-space:nowrap}
.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}
.btn.danger{color:var(--bad)}
.btn.sm{padding:4px 10px;font-size:13px}
.btn:disabled{opacity:.6;cursor:wait}
.row{display:flex;gap:8px;align-items:end;flex-wrap:wrap}
.row>.grow{flex:1;min-width:160px}
.filters{display:flex;gap:10px;align-items:end;flex-wrap:wrap}
.filters>div{min-width:130px}
.filters .dates{display:flex;gap:6px}
.filters .dates input{width:140px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:7px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
th{font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;white-space:nowrap;background:#fafbfc;position:sticky;top:0}
th.sortable{cursor:pointer}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
tbody tr:hover{background:#f8fafd}
.table-wrap{overflow:auto;max-height:620px}
.muted{color:var(--muted);font-size:13px}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
.msg{font-size:13px;margin-top:6px}
.msg.err{color:var(--bad)} .msg.ok{color:var(--good)} .msg.warn{color:var(--warn,#b26a00)}
.hidden{display:none!important}
.check{display:flex;align-items:center;gap:6px;color:var(--text);font-size:14px;margin:0}
.check input{width:auto}

/* Thẻ số liệu */
.kpis{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));margin-bottom:16px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.kpi .k-label{font-size:13px;color:var(--muted)}
.kpi .k-val{font-size:26px;font-weight:700;margin:4px 0 2px;font-variant-numeric:tabular-nums}
.kpi .k-sub{font-size:12px;color:var(--muted)}
.delta{font-weight:600;font-size:12px;white-space:nowrap}
.delta.up{color:var(--good)} .delta.down{color:var(--bad)} .delta.flat{color:var(--muted)}

/* Nhận xét */
.insights{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.insights li{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border-radius:8px;font-size:14px;line-height:1.5}
.insights li .ic{flex:none;font-size:12px;font-weight:700;padding:2px 8px;border-radius:99px;margin-top:1px;white-space:nowrap}
.insights li.good{background:var(--good-bg)} .insights li.good .ic{background:var(--good);color:#fff}
.insights li.warn{background:var(--warn-bg)} .insights li.warn .ic{background:var(--warn);color:#fff}
.insights li.bad{background:var(--bad-bg)} .insights li.bad .ic{background:var(--bad);color:#fff}
.insights li.info{background:var(--info-bg)} .insights li.info .ic{background:var(--info);color:#fff}
.advice-title{font-size:13px;font-weight:700;color:var(--muted);text-transform:uppercase;margin:14px 0 8px}

/* Trạng thái kế hoạch nhập */
.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap;background:var(--soft);color:var(--primary)}
.badge.bad{background:var(--bad-bg);color:var(--bad)} .badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.slow{background:#f0ecfa;color:#5b47b5} .badge.ok{background:var(--good-bg);color:var(--good)}
.badge.est{background:#f1f2f5;color:var(--muted);font-weight:500}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:#fff;border-radius:99px;padding:5px 12px;font-size:13px;cursor:pointer}
.chip.on{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Biểu đồ */
.chart{position:relative;width:100%}
.chart svg{display:block;width:100%;height:auto;overflow:visible}
.chart .axis text{font-size:11px;fill:var(--muted)}
.chart .gridline{stroke:var(--grid);stroke-width:1}
.chart .baseline{stroke:#c9cfda;stroke-width:1}
.chart .hit{fill:transparent;cursor:crosshair}
.chart .hl{fill:rgba(42,120,214,.07)}
.tip{position:absolute;pointer-events:none;background:#1d2433;color:#fff;font-size:12px;line-height:1.5;padding:7px 10px;border-radius:6px;white-space:nowrap;z-index:3;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.tip b{font-weight:700}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:6px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:5px;vertical-align:-1px}
.legend i.dash{height:0;border-top:2px dashed var(--series-1);border-radius:0;width:14px;vertical-align:3px}
.sharebar{height:8px;border-radius:0 4px 4px 0;background:var(--series-1);min-width:2px}
.sharecell{width:22%;min-width:110px}

/* Đăng nhập */
.login{max-width:400px;margin:60px auto}
.google-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:11px;font-weight:600}
.or-line{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;margin:16px 0}
.or-line::before,.or-line::after{content:"";flex:1;border-top:1px solid var(--line)}
.modal-bg{position:fixed;inset:0;background:rgba(20,26,40,.45);display:flex;align-items:center;justify-content:center;z-index:20;padding:16px}
.modal-bg .card{max-width:440px;width:100%;margin:0}
.syncbar{background:var(--warn-bg);color:var(--warn);font-size:13px;padding:8px 12px;border-radius:8px;margin-bottom:12px}
code{background:#f1f3f7;padding:1px 5px;border-radius:4px;font-size:12px;word-break:break-all}
.cls-input{min-width:120px;padding:5px 7px;font-size:13px}
@media (max-width:640px){
  .grid2{grid-template-columns:1fr}
  .kpi .k-val{font-size:22px}
  .filters>div{min-width:calc(50% - 6px)}
  .filters .dates input{width:100%}
}
td.namecol{min-width:240px}

/* Cài đặt → Đồng bộ dữ liệu: 2 ô Hoá đơn / Đặt hàng */
.sync-parts { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; margin-top: 14px; }
.sync-part { border: 1px solid var(--line, #e3e6ec); border-radius: 10px; padding: 12px 14px; }
.sync-part h3 { margin: 0 0 6px; font-size: 15px; }