:root {
  --bg: #f4f5f7; --panel: #ffffff; --ink: #1c2330; --muted: #5d6676; --line: #e1e4ea;
  --accent: #0f6fde; --accent-ink: #ffffff; --sec: #eef3fb; --hover: #f2f6fd; --hi: #d9f6fb;
  --viewer-bg: #e9edf2; --ok: #1e8a4c; --warn: #b26a00;
  --font: "Leelawadee UI", "Sarabun", "Noto Sans Thai", Tahoma, system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12161c; --panel: #1a1f27; --ink: #e6e9ef; --muted: #98a2b3; --line: #2b323d;
    --accent: #4c9bff; --accent-ink: #0b1220; --sec: #1f2a3a; --hover: #222b38; --hi: #0e3a44;
    --viewer-bg: #1d2228; --ok: #5ccf8b; --warn: #f0b04a;
  }
}
:root[data-theme="dark"] {
  --bg: #12161c; --panel: #1a1f27; --ink: #e6e9ef; --muted: #98a2b3; --line: #2b323d;
  --accent: #4c9bff; --accent-ink: #0b1220; --sec: #1f2a3a; --hover: #222b38; --hi: #0e3a44;
  --viewer-bg: #1d2228; --ok: #5ccf8b; --warn: #f0b04a;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--ink); font: 14px/1.45 var(--font); display: flex; flex-direction: column; }
button, input, select { font: inherit; color: inherit; }

.top { display: flex; align-items: center; gap: 16px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand small { display: block; color: var(--muted); font-size: 12px; }
.logo { background: var(--accent); color: var(--accent-ink); font-weight: 700; border-radius: 8px; padding: 6px 8px; font-size: 13px; letter-spacing: .5px; }
.actions { display: flex; gap: 8px; }
.btn { border: 1px solid var(--line); background: var(--panel); padding: 7px 14px; border-radius: 8px; cursor: pointer; }
.btn:hover:not(:disabled) { background: var(--hover); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.status { color: var(--muted); margin-left: auto; font-size: 13px; }

.layout { flex: 1; display: grid; grid-template-columns: minmax(420px, 56%) 1fr; min-height: 0; }
.panel { display: flex; flex-direction: column; min-height: 0; background: var(--panel); border-right: 1px solid var(--line); }
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tabs { display: flex; gap: 2px; }
.tabs button { border: 0; background: none; padding: 8px 12px; border-bottom: 2px solid transparent; cursor: pointer; color: var(--muted); }
.tabs button.on { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.filter { color: var(--muted); padding-bottom: 6px; }
.filter select, .sub select, .sub input { border: 1px solid var(--line); background: var(--panel); border-radius: 6px; padding: 4px 8px; max-width: 260px; }
.tab { display: none; flex: 1; min-height: 0; flex-direction: column; padding: 12px; gap: 10px; overflow: auto; }
.tab.on { display: flex; }
.sub { display: flex; gap: 8px; align-items: center; color: var(--muted); flex-wrap: wrap; }
.hint { color: var(--muted); font-size: 12.5px; margin: 0; }
h3 { margin: 10px 0 2px; font-size: 14px; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 8px; }
.kpi { border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; }
.kpi span { color: var(--muted); font-size: 12px; display: block; }
.kpi b { font-size: 20px; font-variant-numeric: tabular-nums; }
.kpi small { color: var(--muted); margin-left: 4px; }

.tablewrap { overflow: auto; border: 1px solid var(--line); border-radius: 8px; min-height: 0; }
table.grid { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.grid th, .grid td { padding: 5px 8px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.grid th { position: sticky; top: 0; background: var(--panel); font-weight: 600; font-size: 12.5px; color: var(--muted); z-index: 1; }
.grid td.n, .grid th.n { text-align: right; }
.grid tr.sec td { background: var(--sec); font-weight: 600; }
.grid tr.row { cursor: pointer; }
.grid tr.row:hover td { background: var(--hover); }
.grid tr.sel td { background: var(--hi); }
.grid tr.total td { font-weight: 700; border-top: 2px solid var(--line); }
.grid input.price { width: 84px; text-align: right; border: 1px solid var(--line); border-radius: 5px; padding: 2px 5px; background: var(--panel); }
.rules td { text-align: center; } .rules td:first-child { text-align: left; }
.waste { display: flex; gap: 14px; flex-wrap: wrap; }
.waste label { display: flex; gap: 6px; align-items: center; }
.waste input { width: 64px; border: 1px solid var(--line); border-radius: 6px; padding: 3px 6px; background: var(--panel); text-align: right; }

.viewport { position: relative; min-height: 0; }
.viewer { position: absolute; inset: 0; }
.viewer canvas { display: block; }
.legend { position: absolute; left: 10px; top: 10px; display: flex; flex-direction: column; gap: 3px; background: color-mix(in srgb, var(--panel) 88%, transparent); border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; font-size: 12.5px; }
.legend:empty { display: none; }
.legend label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.legend i { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.legend .clear { margin-top: 4px; border: 1px solid var(--line); background: var(--panel); border-radius: 5px; cursor: pointer; font-size: 12px; padding: 2px 6px; }
.info { position: absolute; right: 10px; top: 10px; width: 290px; max-height: calc(100% - 20px); overflow: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 12.5px; box-shadow: 0 6px 24px rgba(0,0,0,.12); }
.info h4 { margin: 0 0 6px; font-size: 13.5px; }
.info table { width: 100%; border-collapse: collapse; }
.info td { padding: 2px 0; vertical-align: top; } .info td:first-child { color: var(--muted); width: 42%; }
.info .x { float: right; border: 0; background: none; cursor: pointer; font-size: 16px; color: var(--muted); }

.drop { position: absolute; inset: 0; display: grid; place-items: center; background: var(--viewer-bg); text-align: center; }
.drop > div { border: 2px dashed var(--line); border-radius: 16px; padding: 36px 40px; max-width: 420px; display: flex; flex-direction: column; gap: 6px; }
.drop span { color: var(--muted); font-size: 13px; }
.drop.over > div { border-color: var(--accent); }
.drop.hide { display: none; }
.bar { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; margin-top: 10px; }
.bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.err { color: #d33; white-space: pre-wrap; text-align: left; font-size: 12px; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; grid-template-rows: 55vh 45vh; }
  .panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .status { margin-left: 0; width: 100%; }
}