:root{
  --bg:#f3f5f2; --card:#fff; --ink:#1b2420; --muted:#5d6b64; --line:#dde3de;
  --brand:#0f5132; --brand-2:#1e7a4d; --brand-soft:#e3f1e8;
  --warn:#9a5b00; --warn-soft:#fff3d6; --bad:#a32121; --bad-soft:#fde8e8; --ok:#14683b;
  --radius:12px;
}
@media (prefers-color-scheme: dark){
  :root{--bg:#121714;--card:#1b231e;--ink:#e8eee9;--muted:#9fb0a6;--line:#2e3a33;--brand:#4fb883;--brand-2:#6fd0a0;--brand-soft:#1d3a2b;--warn:#f0b44c;--warn-soft:#3b2f12;--bad:#ff8a8a;--bad-soft:#3d1c1c;--ok:#6fd0a0}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
button,input,select,textarea{font:inherit;color:inherit}
.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--brand);color:#fff}
.topbar h1{font-size:16px;margin:0;flex:1;line-height:1.2}
.topbar small{display:block;font-weight:400;opacity:.85;font-size:12px}
.topbar button{background:rgba(255,255,255,.16);border:0;color:#fff;padding:7px 11px;border-radius:8px;cursor:pointer}
.wrap{max-width:1100px;margin:0 auto;padding:16px}
.narrow{max-width:560px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px}
.card h2,.card h3{margin:0 0 8px;font-size:17px}
.muted{color:var(--muted)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.grow{flex:1}
.nav{display:flex;gap:6px;overflow-x:auto;padding:10px 16px 0;max-width:1100px;margin:0 auto}
.nav button{border:1px solid var(--line);background:var(--card);padding:8px 14px;border-radius:999px;cursor:pointer;white-space:nowrap}
.nav button.on{background:var(--brand);border-color:var(--brand);color:#fff}
.btn{border:1px solid var(--line);background:var(--card);padding:10px 16px;border-radius:10px;cursor:pointer;min-height:44px}
a.btn{color:inherit;display:inline-flex;align-items:center}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.btn.danger{color:var(--bad);border-color:var(--bad)}
.btn.sm{min-height:34px;padding:5px 11px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed}
input[type=text],input[type=password],input[type=number],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);min-height:44px}
label.f{display:block;margin-bottom:12px;font-size:14px;color:var(--muted)}
label.f>input,label.f>select,label.f>textarea{margin-top:4px;color:var(--ink)}
.err{background:var(--bad-soft);color:var(--bad);padding:9px 12px;border-radius:10px;margin:8px 0;font-size:14px}
.okmsg{background:var(--brand-soft);color:var(--ok);padding:9px 12px;border-radius:10px;margin:8px 0;font-size:14px}
.chip{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12.5px;background:var(--line);color:var(--ink);white-space:nowrap}
.chip.done{background:var(--brand-soft);color:var(--ok)}
.chip.todo{background:var(--warn-soft);color:var(--warn)}
.chip.bad{background:var(--bad-soft);color:var(--bad)}
.teamgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}
.team{display:block;text-align:left;width:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px;cursor:pointer}
.team:active{background:var(--brand-soft)}
.team b{font-size:20px;letter-spacing:.3px}
.team .sub{font-size:13px;color:var(--muted);margin:2px 0 8px;min-height:18px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.team .chips{display:flex;gap:6px;flex-wrap:wrap}
.tabs{display:flex;gap:0;margin:0 0 12px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--card)}
.tabs button{flex:1;border:0;background:transparent;padding:12px 8px;cursor:pointer;font-weight:600}
.tabs button.on{background:var(--brand);color:#fff}
.tabs button .s{display:block;font-weight:400;font-size:12px;opacity:.85}
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:6px}
.seg button{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:8px 4px;min-height:52px;cursor:pointer;font-size:13.5px;line-height:1.2}
.seg button b{display:block;font-size:15px}
.seg button.on{background:var(--brand);border-color:var(--brand);color:#fff}
.seg button.on.zero{background:#6b7770;border-color:#6b7770}
.blk{padding:10px 0;border-top:1px solid var(--line)}
.blk:first-of-type{border-top:0}
.blk .t{font-weight:600;margin-bottom:6px}
.stepper{display:inline-flex;align-items:center;gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.stepper button{width:48px;height:48px;border:0;background:var(--card);font-size:22px;cursor:pointer}
.stepper span{min-width:48px;text-align:center;font-size:20px;font-weight:700}
.timeinp{display:flex;align-items:center;gap:6px}
.timeinp input{width:84px;text-align:center;font-size:20px;font-weight:700}
.sticky{position:sticky;bottom:0;margin:0 -16px -16px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);box-shadow:0 -6px 16px rgba(0,0,0,.06)}
.score{display:flex;align-items:baseline;gap:8px}
.score b{font-size:30px;color:var(--brand)}
.breakdown{font-size:13px;color:var(--muted)}
.check{display:flex;gap:10px;align-items:flex-start;margin:10px 0;font-size:15px}
.check input{width:22px;height:22px;margin-top:1px;flex:none}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:14.5px}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
th{font-size:12.5px;color:var(--muted);font-weight:600;background:var(--card);position:sticky;top:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
tr.top1 td{background:#fff6d6}tr.top2 td{background:#eef1f3}tr.top3 td{background:#f8ebe0}
@media (prefers-color-scheme: dark){tr.top1 td{background:#3a3414}tr.top2 td{background:#262d2a}tr.top3 td{background:#33271c}}
.rank{font-weight:800;font-size:17px}
dialog{border:0;border-radius:16px;padding:18px;max-width:min(520px,calc(100vw - 24px));width:100%;background:var(--card);color:var(--ink)}
dialog::backdrop{background:rgba(0,0,0,.45)}
dialog h3{margin:0 0 8px}
.dlgbtns{display:flex;gap:10px;justify-content:flex-end;margin-top:14px}
.login{min-height:100vh;display:grid;place-items:center;padding:16px}
.login .card{width:100%;max-width:380px;padding:22px}
.login h1{font-size:20px;margin:0 0 4px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:14px}
.kv dt{color:var(--muted)}.kv dd{margin:0}
.bar{height:8px;border-radius:999px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:var(--brand-2)}
.pw{font:700 18px ui-monospace,Menlo,Consolas,monospace;background:var(--brand-soft);padding:8px 12px;border-radius:8px;user-select:all}
@media print{.topbar,.nav,.noprint{display:none!important}body{background:#fff;color:#000}.card{border:0}}

/* ---- vị trí + màu, chữ ký, thời gian, QR ---- */
.poshead{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
span.poshead{display:inline-flex}
.pos{display:inline-block;min-width:54px;text-align:center;padding:2px 12px;border-radius:10px;background:var(--ink);color:var(--card);font:800 24px/1.3 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.5px}
.pos.sm{font-size:15px;min-width:0;padding:0 8px;border-radius:6px}
.swatch{display:inline-block;padding:4px 14px;border-radius:999px;font-weight:700;font-size:16px;border:2px solid rgba(0,0,0,.25);min-width:70px;text-align:center}
.blk .t.poshead{margin-bottom:8px}
.tcell{display:flex;flex-direction:column;align-items:center;gap:2px}
.tcell small{color:var(--muted);font-size:12px}
.timeinp{align-items:flex-start}
.timeinp{font-size:26px;font-weight:700}
.timeinp .tcell:not(:first-child){margin-left:2px}
.timeinp button{align-self:center}
.swd{font:700 30px ui-monospace,Menlo,Consolas,monospace;min-width:150px}
.sigbox{position:relative;border:2px dashed var(--muted);border-radius:12px;background:#fff;overflow:hidden}
.sigcv{display:block;width:100%;height:auto;aspect-ratio:8/3;touch-action:none;cursor:crosshair;background:#fff}
.sighint{position:absolute;left:12px;bottom:6px;color:#aab;font-size:13px;pointer-events:none}
.sigimg{display:block;max-width:320px;width:100%;background:#fff;border:1px solid var(--line);border-radius:10px}
.sigshow{margin:10px 0}
.scanvideo{width:100%;max-height:50vh;margin-top:10px;border-radius:12px;background:#000;object-fit:cover}
.ci-sbd{font-size:40px;font-weight:800;letter-spacing:1px;color:var(--brand)}
.ci-ok{min-height:56px;font-size:18px;flex:1}
.qrcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:12px}
.qrcard{background:#fff;color:#000;border:1px solid #bbb;border-radius:10px;padding:10px 12px;break-inside:avoid;page-break-inside:avoid}
.qrhead{font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#444;border-bottom:1px solid #ccc;padding-bottom:4px;margin-bottom:6px}
.qrbody{display:flex;gap:12px;align-items:center}
.qrbody svg{flex:none}
.qrname{font-size:21px;font-weight:800;line-height:1.15}
.qrteam{font-size:15px;font-weight:700;margin-top:4px}.qrsch{font-size:13px;color:#333}.qrmeta{font-size:13px;color:#555;margin-top:2px}
@media print{
  @page{size:A4;margin:10mm}
  .qrcards{grid-template-columns:1fr 1fr;gap:6mm}
  .qrcard{border:1px solid #000;height:62mm;overflow:hidden}
  .wrap{padding:0;max-width:none}
}

dialog.wide{max-width:min(780px,calc(100vw - 16px));max-height:94vh;overflow:auto}
.bigtime{font:800 30px ui-monospace,Menlo,Consolas,monospace;color:var(--brand)}
.timecard{border:2px solid var(--brand)}
.cirow{display:flex;align-items:center;gap:10px;padding:10px 0;border-top:1px solid var(--line);flex-wrap:wrap}
.cirow:first-of-type{border-top:0}
.cirow.focus{background:var(--brand-soft);margin:0 -10px;padding:12px 10px;border-radius:10px}
.ciname{font-size:18px;font-weight:700}
.cirow.focus .ciname{font-size:22px}
dialog.wide .dlgbtns{position:sticky;bottom:-18px;background:var(--card);padding:10px 0 4px;margin-top:10px;border-top:1px solid var(--line)}