:root {
  --bg: #f4f2ee; --panel: #ffffff; --ink: #1f2328; --muted: #6a6f76; --line: #dedad3;
  --accent: #8a5a2b; --accent-ink: #ffffff; --good: #2f7d4f; --warn: #b4541c;
  --g-canh: #e9c79a; --g-khung: #a8c3a0; --g-chan: #9fb7d6; --g-nep: #d6a3b3; --g-other: #cfcfcf;
  --sheet: #f7efe2; --trim: #e3d6c2; --remnant: #c9e3cf;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.45 "Segoe UI", system-ui, sans-serif; background: var(--bg); color: var(--ink); }
h1 { margin: 0; font-size: 20px; letter-spacing: .3px; }
h2 { margin: 0 0 10px; font-size: 14px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); }
h3 { margin: 18px 0 8px; font-size: 15px; }
.sub { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; background: var(--panel); border-bottom: 1px solid var(--line); }
.top-actions { display: flex; gap: 8px; }
button { font: inherit; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); padding: 6px 12px; border-radius: 6px; cursor: pointer; }
button.ghost { background: transparent; color: var(--accent); }
button.icon { background: transparent; border: none; color: var(--muted); padding: 2px 6px; }
button.icon:hover { color: var(--warn); }
.layout { display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 16px; padding: 16px 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px; margin-bottom: 16px; }
.lot { width: 100%; border-collapse: collapse; }
.lot th { font-weight: 600; font-size: 12px; color: var(--muted); text-align: left; padding: 4px 2px; }
.lot td { padding: 3px 2px; }
.lot input { width: 100%; font: inherit; padding: 4px 5px; border: 1px solid var(--line); border-radius: 4px; }
.lot td.tech { font-size: 11px; color: var(--muted); padding-top: 0; }
.row-actions { display: flex; gap: 8px; margin-top: 10px; }
.row-actions button { white-space: nowrap; }
.row-actions select { flex: 1; min-width: 0; font: inherit; font-size: 12px; }
.field { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; gap: 8px; }
.field input { width: 90px; font: inherit; padding: 4px 6px; border: 1px solid var(--line); border-radius: 4px; text-align: right; }
.check { display: flex; gap: 8px; align-items: center; font-size: 13px; }
.main { min-width: 0; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 14px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.kpi .v { font-size: 22px; font-weight: 650; }
.kpi .l { color: var(--muted); font-size: 12px; }
.kpi .v.good { color: var(--good); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; flex-wrap: wrap; }
.tabs button { background: transparent; color: var(--muted); border: none; border-bottom: 2px solid transparent; border-radius: 0; padding: 8px 12px; }
.tabs button.active { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.tab { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th, table.data td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
table.data th { font-size: 12px; color: var(--muted); font-weight: 600; background: #faf8f5; }
table.data td.n, table.data th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.data tr.grp td { background: #faf6ef; font-weight: 600; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.pos { color: var(--warn); } .neg { color: var(--good); }
.error { background: #fde8e1; border: 1px solid var(--warn); color: var(--warn); padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
.matblock { margin-bottom: 26px; }
.matblock .head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.layouts { display: grid; grid-template-columns: repeat(auto-fill, minmax(560px, 1fr)); gap: 14px; margin-top: 8px; }
.layoutcard { border: 1px solid var(--line); border-radius: 8px; padding: 8px; }
.layoutcard .cap { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.layoutcard .cap b { color: var(--ink); }
svg.sheet { width: 100%; height: auto; display: block; }
svg text { font-family: "Segoe UI", system-ui, sans-serif; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin: 4px 0 12px; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -2px; border: 1px solid #0002; }
.notes li { margin-bottom: 6px; }
@media (max-width: 1100px) { .layout { grid-template-columns: 1fr; padding: 12px; } .layouts { grid-template-columns: 1fr; } }
@media print {
  .side, .top-actions, .tabs { display: none; }
  .layout { grid-template-columns: 1fr; padding: 0; }
  .tab[hidden] { display: block !important; }
  .tab { border: none; page-break-before: always; }
  .layoutcard { break-inside: avoid; }
}