:root{
  --ink:#24211B;
  --ink-soft:#5B564A;
  --canopy:#1F4B3F;
  --canopy-dark:#163A31;
  --canopy-tint:#E7EFEA;
  --marigold:#E2963A;
  --marigold-dark:#B9762A;
  --brick:#B8452F;
  --brick-tint:#F7E5E0;
  --paper:#FBF7EC;
  --paper-2:#F6F0E1;
  --bg:#F0EADA;
  --line:#E0D6BC;
  --radius:14px;
  --shadow: 0 1px 2px rgba(36,33,27,.06), 0 6px 20px -8px rgba(36,33,27,.18);
}
*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  background:var(--bg);
  background-image: radial-gradient(circle at 1px 1px, rgba(36,33,27,.05) 1px, transparent 0);
  background-size: 22px 22px;
  color:var(--ink);
  font-family:'Noto Sans Lao','Noto Sans Lao Looped',sans-serif;
  -webkit-font-smoothing:antialiased;
}
.mono{font-family:'JetBrains Mono',monospace;}
button{font-family:inherit;cursor:pointer;}
input,select{font-family:inherit;}

/* ---------- Lock screen ---------- */
#lock{
  position:fixed;inset:0;background:var(--canopy);
  display:flex;align-items:center;justify-content:center;flex-direction:column;
  z-index:999;color:#fff;
}
#lock h1{font-size:20px;font-weight:700;margin:0 0 4px;}
#lock p{color:#C9DBD3;margin:0 0 22px;font-size:13px;}
.pin-dots{display:flex;gap:12px;margin-bottom:22px;}
.pin-dot{width:14px;height:14px;border-radius:50%;border:2px solid #C9DBD3;transition:.15s;}
.pin-dot.filled{background:var(--marigold);border-color:var(--marigold);}
.pin-pad{display:grid;grid-template-columns:repeat(3,64px);gap:12px;}
.pin-pad button{
  width:64px;height:64px;border-radius:50%;border:1px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.08);color:#fff;font-size:20px;font-weight:600;
}
.pin-pad button:active{background:rgba(255,255,255,.22);}
.pin-pad button.wide{grid-column:span 1;font-size:13px;background:transparent;border:none;}
#lockErr{color:#F3B3A4;font-size:12.5px;height:16px;margin-top:14px;}

/* ---------- App shell ---------- */
#app{display:none;min-height:100vh;flex-direction:column;}
header{
  background:var(--canopy);color:#fff;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  position:sticky;top:0;z-index:50;
}
header .brand{display:flex;align-items:center;gap:10px;}
header .brand .mark{
  width:34px;height:34px;border-radius:9px;background:var(--marigold);
  display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--canopy-dark);font-size:16px;
}
header h1{font-size:16px;margin:0;font-weight:700;letter-spacing:.2px;}
header .sub{font-size:11px;color:#B9D2C7;margin-top:1px;}
nav{display:flex;gap:4px;background:rgba(255,255,255,.1);padding:4px;border-radius:10px;}
nav a{
  background:transparent;border:none;color:#DCEBE3;padding:8px 14px;border-radius:7px;
  font-size:13.5px;font-weight:600;text-decoration:none;display:inline-block;
}
nav a.active{background:var(--marigold);color:var(--canopy-dark);}
main{flex:1;padding:18px 20px 40px;max-width:1360px;margin:0 auto;width:100%;}

/* ---------- POS view ---------- */
.pos-grid{display:grid;grid-template-columns:1fr 360px;gap:18px;align-items:start;}
.cat-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px;}
.chip{
  padding:7px 14px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);font-size:13px;font-weight:600;color:var(--ink-soft);
}
.chip.active{background:var(--canopy);color:#fff;border-color:var(--canopy);}
.search-row{display:flex;gap:8px;margin-bottom:14px;}
.search-row input{
  flex:1;padding:11px 14px;border-radius:10px;border:1px solid var(--line);
  background:var(--paper);font-size:14px;
}
.search-row input:focus{outline:2px solid var(--marigold);outline-offset:1px;}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;}
.pcard{
  background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:12px;text-align:left;
  display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.pcard .catdot{width:8px;height:8px;border-radius:50%;position:absolute;top:12px;right:12px;}
.pcard .name{font-size:13.5px;font-weight:700;line-height:1.3;padding-right:14px;}
.pcard .price{font-size:15px;font-weight:700;color:var(--canopy-dark);}
.pcard .unit{font-size:11px;color:var(--ink-soft);}
.pcard .stock{font-size:11px;color:var(--ink-soft);margin-top:2px;}
.pcard.low .stock{color:var(--brick);font-weight:700;}
.pcard:hover{border-color:var(--marigold);}
.empty-note{color:var(--ink-soft);font-size:13px;padding:30px 0;text-align:center;}

/* Receipt / cart panel */
.receipt{
  background:var(--paper);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;position:sticky;top:78px;
  max-height:calc(100vh - 96px);
}
.receipt-head{padding:16px 18px 12px;border-bottom:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;}
.receipt-head h2{margin:0;font-size:14px;font-weight:800;}
.receipt-head span{font-size:11px;color:var(--ink-soft);}
.cart-items{padding:8px 18px;overflow-y:auto;flex:1;min-height:80px;}
.cart-row{display:flex;align-items:center;gap:8px;padding:9px 0;border-bottom:1px solid var(--line);}
.cart-row:last-child{border-bottom:none;}
.cart-row .ci-name{flex:1;font-size:12.5px;font-weight:600;line-height:1.3;}
.cart-row .ci-sub{font-size:10.5px;color:var(--ink-soft);}
.qty-ctl{display:flex;align-items:center;gap:6px;}
.qty-ctl button{width:22px;height:22px;border-radius:6px;border:1px solid var(--line);background:#fff;font-size:13px;line-height:1;}
.qty-ctl input{width:44px;text-align:center;border:1px solid var(--line);border-radius:6px;padding:3px 2px;font-size:12px;}
.ci-total{width:74px;text-align:right;font-size:12.5px;font-weight:700;}
.ci-del{background:none;border:none;color:var(--brick);font-size:15px;padding:0 2px;}
.receipt-foot{padding:14px 18px 18px;border-top:1px dashed var(--line);}
.rf-row{display:flex;justify-content:space-between;font-size:12.5px;color:var(--ink-soft);margin-bottom:4px;}
.rf-total{display:flex;justify-content:space-between;font-size:19px;font-weight:800;margin:8px 0 14px;color:var(--canopy-dark);}
.btn{border:none;border-radius:10px;padding:12px 16px;font-weight:700;font-size:14px;width:100%;}
.btn-primary{background:var(--marigold);color:var(--canopy-dark);}
.btn-primary:disabled{opacity:.45;cursor:not-allowed;}
.btn-ghost{background:transparent;color:var(--ink-soft);border:1px solid var(--line);margin-top:8px;}
.jag{height:10px;background:
  linear-gradient(135deg, var(--bg) 25%, transparent 25%) 0 0,
  linear-gradient(225deg, var(--bg) 25%, transparent 25%) 0 0;
  background-size:12px 20px;background-color:var(--paper);}

/* ---------- Generic table / cards ---------- */
.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:10px;flex-wrap:wrap;}
.toolbar h2{font-size:17px;margin:0;}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin-bottom:16px;}
.stat{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow);}
.stat .label{font-size:11.5px;color:var(--ink-soft);font-weight:600;}
.stat .val{font-size:20px;font-weight:800;margin-top:4px;}
.stat.profit .val{color:var(--canopy-dark);}
.stat.alert .val{color:var(--brick);}

table{width:100%;border-collapse:collapse;background:var(--paper);border:1px solid var(--line);border-radius:12px;overflow:hidden;}
thead th{background:var(--paper-2);text-align:left;font-size:11.5px;color:var(--ink-soft);padding:10px 12px;font-weight:700;border-bottom:1px solid var(--line);}
tbody td{padding:10px 12px;font-size:13px;border-bottom:1px solid var(--line);}
tbody tr:last-child td{border-bottom:none;}
tbody tr.low td{background:var(--brick-tint);}
.pill{font-size:10.5px;padding:2px 8px;border-radius:999px;background:var(--canopy-tint);color:var(--canopy-dark);font-weight:700;}
.pill.low{background:var(--brick-tint);color:var(--brick);}
.icon-btn{border:1px solid var(--line);background:#fff;border-radius:7px;padding:5px 9px;font-size:12px;margin-right:4px;}
.icon-btn.danger{color:var(--brick);border-color:#EBC9BF;}

/* Modal */
.modal-bg{position:fixed;inset:0;background:rgba(36,33,27,.45);display:none;align-items:center;justify-content:center;z-index:200;padding:16px;}
.modal-bg.open{display:flex;}
.modal{background:var(--paper);border-radius:16px;padding:22px;width:100%;max-width:440px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow);}
.modal h3{margin:0 0 14px;font-size:16px;}
.field{margin-bottom:12px;}
.field label{display:block;font-size:12px;font-weight:700;color:var(--ink-soft);margin-bottom:5px;}
.field input,.field select{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:13.5px;background:#fff;}
.field-row{display:flex;gap:10px;}
.field-row .field{flex:1;}
.modal-actions{display:flex;gap:8px;margin-top:16px;}
.modal-actions .btn{width:auto;flex:1;}

.receipt-print{display:none;}
@media print{
  @page{ size: var(--receipt-width, 80mm) auto; margin: 2mm; }
  body *{visibility:hidden;}
  .receipt-print, .receipt-print *{visibility:visible;}
  .receipt-print{display:block;position:fixed;top:0;left:0;width:var(--receipt-width, 80mm);padding:0;font-family:'JetBrains Mono',monospace;font-size:11px;line-height:1.4;}
}

.report-print{display:none;}
@media print{
  @page{ size: A4; margin: 14mm; }
  .report-print, .report-print *{visibility:visible;}
  .report-print{display:block !important;position:fixed;top:0;left:0;width:100%;padding:0;font-family:'Noto Sans Lao',sans-serif;font-size:12px;}
  .report-print table{width:100%;border-collapse:collapse;margin-top:6px;}
  .report-print th,.report-print td{border:1px solid #999;padding:5px 8px;text-align:left;font-size:11px;}
  .report-print .rp-stats{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:10px;}
  .report-print .rp-stats div{font-size:11px;}
}

@media (max-width:880px){
  .pos-grid{grid-template-columns:1fr;}
  .receipt{position:static;max-height:none;}
  header{flex-wrap:wrap;}
  nav{order:3;width:100%;overflow-x:auto;}
}