:root {
  color-scheme: light dark;
  --surface: #fcfcfb;
  --card: #ffffff;
  --text: #0b0b0b;
  --text-2: #52514e;
  --line: #dcdbd6;
  --accent: #1a7a56;
  --accent-bg: #e8f5ef;
  --error: #b3261e;
  --s-takeHome: #2a78d6;
  --s-incomeTax: #eb6834;
  --s-employeeNI: #1baf7a;
  --s-employerNI: #eda100;
  --s-apprenticeshipLevy: #e87ba4;
  --s-umbrellaFee: #c26e12;
  --s-runningCosts: #ab68ba;
  --s-corporationTax: #e34948;
  --s-dividendTax: #6250d6;
  --s-retained: #008300;
}
@media (prefers-color-scheme: dark) {
  :root {
    --surface: #1a1a19;
    --card: #232322;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --line: #3a3a38;
    --accent: #4cc99a;
    --accent-bg: #1c2f27;
    --error: #f2928b;
    --s-takeHome: #3987e5;
    --s-incomeTax: #d95926;
    --s-employeeNI: #199e70;
    --s-employerNI: #c98500;
    --s-apprenticeshipLevy: #d55181;
    --s-umbrellaFee: #bb6802;
    --s-runningCosts: #a462b4;
    --s-corporationTax: #e66767;
    --s-dividendTax: #9085e9;
    --s-retained: #008300;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--surface);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main { max-width: 960px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 1.5rem; margin: 0 0 4px; }
.lede { color: var(--text-2); margin: 0 0 24px; }

.field { margin-bottom: 24px; max-width: 320px; }
.field label { display: block; font-weight: 600; margin-bottom: 4px; }
.field input {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  font-size: 1.25rem;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.field input[aria-invalid="true"] { border-color: var(--error); }
.message { color: var(--error); margin: 6px 0 0; font-size: 0.9rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}
.card.best { border: 2px solid var(--accent); background: var(--accent-bg); padding: 15px; }
.card h2 { font-size: 1rem; margin: 0 0 8px; color: var(--text-2); display: flex; justify-content: space-between; gap: 8px; }
.badge { font-size: 0.75rem; font-weight: 600; color: var(--accent); }
.card .year { font-size: 1.75rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.card .year small { font-size: 0.9rem; font-weight: 400; color: var(--text-2); }
.card dl { margin: 8px 0 0; display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; font-variant-numeric: tabular-nums; }
.card dt { color: var(--text-2); }
.card dd { margin: 0; text-align: right; }

section.panel { margin-top: 32px; }
section.panel h2 { font-size: 1.1rem; margin: 0 0 12px; }

.legend { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.875rem; color: var(--text-2); }
.legend li { display: flex; align-items: center; gap: 6px; }
.swatch { width: 14px; height: 14px; border-radius: 3px; background: var(--c); flex: none; }
.swatch.hatched { background: repeating-linear-gradient(45deg, var(--c) 0 2px, transparent 2px 5px); border: 1px solid var(--c); }
.swatch.faint { opacity: 0.35; }

.bar-row { margin-bottom: 14px; }
.bar-row .bar-title { display: flex; justify-content: space-between; gap: 8px; font-size: 0.9rem; margin-bottom: 2px; }
.bar-row .bar-title span:last-child { color: var(--text-2); }
.bar-row svg { display: block; width: 100%; height: 52px; overflow: visible; }
.seg { stroke: var(--surface); stroke-width: 2; }
.seg.hatched { stroke: var(--s-retained); stroke-width: 1.5; }
.seg.on-top { opacity: 0.3; stroke: none; }
.gross-line { stroke: var(--text-2); stroke-width: 1; stroke-dasharray: 3 3; }
.bar-note { font-size: 12px; fill: var(--text-2); }
.seg-takeHome { fill: var(--s-takeHome); }
.seg-incomeTax { fill: var(--s-incomeTax); }
.seg-employeeNI { fill: var(--s-employeeNI); }
.seg-employerNI { fill: var(--s-employerNI); }
.seg-apprenticeshipLevy { fill: var(--s-apprenticeshipLevy); }
.seg-umbrellaFee { fill: var(--s-umbrellaFee); }
.seg-runningCosts { fill: var(--s-runningCosts); }
.seg-corporationTax { fill: var(--s-corporationTax); }
.seg-dividendTax { fill: var(--s-dividendTax); }
.seg-retained { fill: var(--s-retained); }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { padding: 6px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.route-head { text-align: center; border-bottom: none; }
.unit-row th { font-weight: 400; color: var(--text-2); font-size: 0.8rem; }
.row-head { text-align: left; font-weight: 400; }
.row-head .swatch { display: inline-block; vertical-align: middle; margin-right: 8px; }
tfoot th, tfoot td { font-weight: 700; border-top: 2px solid var(--text-2); border-bottom: none; }
.note { color: var(--text-2); font-size: 0.875rem; margin: 8px 0 0; }

.tip {
  position: absolute;
  z-index: 10;
  max-width: 280px;
  padding: 10px 12px;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--text-2);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgb(0 0 0 / 0.25);
  font-size: 0.875rem;
  pointer-events: none;
}
.tip p { margin: 4px 0 0; }
.tip .collector { color: var(--text-2); font-size: 0.8rem; }
[data-slice] { cursor: help; }
.seg:focus-visible, tr[data-slice]:focus-visible { outline: 2px solid var(--text); outline-offset: 1px; }

.card .next { margin: 10px 0 0; padding-top: 8px; border-top: 1px solid var(--line); font-size: 0.9rem; font-variant-numeric: tabular-nums; }

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.mode { border: 0; padding: 0; margin: 0 0 16px; display: flex; flex-wrap: wrap; gap: 8px 20px; }
.mode label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.dayrate { display: flex; flex-wrap: wrap; gap: 0 16px; align-items: flex-start; }
.dayrate .field { flex: 1 1 140px; max-width: 200px; }
.resulting { flex-basis: 100%; margin: 0 0 24px; color: var(--text-2); }
[hidden] { display: none !important; }

.assumptions { margin: 0 0 24px; }
.assumptions summary { cursor: pointer; font-weight: 600; margin-bottom: 8px; }
.assumption-fields { display: flex; flex-wrap: wrap; gap: 0 16px; }
.assumption-fields .field { flex: 1 1 160px; max-width: 220px; margin-bottom: 12px; }
.assumption-fields input { font-size: 1rem; }
.hint { margin: 4px 0 0; font-size: 0.8rem; color: var(--text-2); }
button.link { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); text-decoration: underline; cursor: pointer; }

#draw legend { padding: 0; margin-bottom: 6px; color: var(--text-2); font-size: 0.9rem; }

.inputs { display: flex; flex-wrap: wrap; gap: 0 24px; align-items: flex-start; }
.inputs .field.days { flex: 0 1 200px; }
.inputs .field.weeks { flex: 0 1 260px; }
.dayrate { display: block; }
.dayrate .field { max-width: 320px; }
.resulting { margin: -12px 0 24px; color: var(--text-2); }
.resulting:empty { display: none; }

.field select { width: 100%; padding: 10px 12px; font: inherit; font-size: 1.25rem; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
.inputs .field.year { flex: 0 1 160px; }
.scope { margin: 0 0 12px; color: var(--text-2); font-size: 0.9rem; }

/* Breakdown table: £ and % side by side on a wide screen, stacked on a phone. */
.pair { display: grid; grid-template-columns: 5.5em 6.5em; justify-content: end; column-gap: 4px; }
.pair .amt, .pair .share { text-align: right; font-variant-numeric: tabular-nums; }
.unit { font-weight: 400; color: var(--text-2); font-size: 0.8rem; }
.unit-row td { border-bottom: 1px solid var(--line); padding-top: 0; }
.route-head { text-align: right; padding-right: 6px; }
#table td.num { padding: 6px 10px; }

@media (max-width: 640px) {
  main { padding: 16px 16px 40px; }
  h1 { font-size: 1.3rem; }
  .field { max-width: none; }
  .inputs { gap: 0 16px; }
  .inputs .field, .inputs .field.days, .inputs .field.weeks, .inputs .field.year { flex: 1 1 140px; }
  .dayrate { flex: 1 1 100%; }
  #table th, #table td { padding: 6px 4px; font-size: 0.8rem; white-space: normal; }
  #table { table-layout: fixed; }
  #table th:first-child, #table td:first-child { width: 31%; }
  #table .row-head { font-size: 0.75rem; }
  #table .route-head { text-align: right; }
  #table .swatch { margin-right: 3px; width: 8px; height: 8px; }
  .pair { display: block; text-align: right; }
  .pair .share { display: block; color: var(--text-2); font-size: 0.72rem; }
  .unit-row { display: none; }
  .route-head { padding-right: 4px; }
  #equivalent-table th, #equivalent-table td { white-space: normal; padding: 6px 4px; }
  .card .year { font-size: 1.5rem; }
}

#equivalent-table th { text-align: right; }
.back-fields { display: flex; flex-wrap: wrap; gap: 0 12px; }
.back-fields .field { flex: 1 1 160px; max-width: 220px; }
.back-fields .field.period { flex: 0 1 140px; }
#equivalent-table td.unreachable { text-align: left; color: var(--text-2); white-space: normal; }
#equivalent-table th:first-child { text-align: left; }

footer { max-width: 960px; margin: 0 auto; padding: 0 16px 32px; color: var(--text-2); font-size: 0.875rem; }
footer p { margin: 0; padding-top: 16px; border-top: 1px solid var(--line); }

.card .warning { margin: 10px 0 0; font-size: 0.85rem; color: var(--text-2); }
.prompt { grid-column: 1 / -1; margin: 0; color: var(--text-2); }
.share { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; margin: 0 0 16px; }
.copy-status { color: var(--text-2); font-size: 0.9rem; }
.link-text { flex: 1 1 100%; padding: 8px 10px; font: inherit; font-size: 0.85rem; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 8px; }