:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --accent-wash: rgba(42, 120, 214, 0.10);
  --error-bg: #fdf0ef;
  --error-ink: #9b2c2c;
  --radius: 8px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-1: #3987e5;
    --series-2: #d95926;
    --accent-wash: rgba(57, 135, 229, 0.16);
    --error-bg: #2e1a19;
    --error-ink: #f2a7a7;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-1: #3987e5;
  --series-2: #d95926;
  --accent-wash: rgba(57, 135, 229, 0.16);
  --error-bg: #2e1a19;
  --error-ink: #f2a7a7;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 var(--font);
}
a { color: var(--series-1); }
h1, h2, h3 { margin: 0; line-height: 1.25; }
h1 { font-size: 1.6rem; font-weight: 650; }
h2 { font-size: 1.3rem; font-weight: 650; }
h3 { font-size: 1rem; font-weight: 600; }

.site-header, .site-footer { max-width: 1440px; margin: 0 auto; padding: 20px 24px; }
.site-header .lede { margin: 6px 0 0; color: var(--ink-2); max-width: 80ch; }
.site-header .cite { margin: 8px 0 0; color: var(--ink-2); font-size: 0.85rem; max-width: 80ch; }
.site-footer { color: var(--ink-2); font-size: 0.85rem; }

.layout {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

/* Controls */
.controls {
  position: sticky;
  top: 12px;
  max-height: calc(100vh - 24px);
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 16px 16px;
}
/* min-width: 0 stops wide date inputs from stretching the fieldset past the panel */
fieldset { border: 0; border-bottom: 1px solid var(--grid); margin: 0; padding: 12px 0 14px; min-width: 0; }
legend { font-weight: 600; padding: 0; margin-bottom: 4px; float: left; width: 100%; }
legend + * { clear: both; }
label, .label { display: block; color: var(--ink-2); font-size: 0.85rem; margin: 8px 0 3px; }
input, select, button { font: inherit; color: inherit; }
input[type="text"], input:not([type]), input[type="date"], input[type="month"], input[type="number"], select {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--axis);
  border-radius: 6px;
  background: var(--page);
  min-height: 34px;
}
input:focus-visible, select:focus-visible, button:focus-visible, .seg input:focus-visible + span,
.choices input:focus-visible + span {
  outline: 2px solid var(--series-1);
  outline-offset: 1px;
}
.row2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 8px; }
.row2 > div { min-width: 0; }
.row2.dates { grid-template-columns: minmax(0, 1fr); gap: 0; }
.hint { color: var(--ink-2); font-size: 0.82rem; margin: 8px 0 0; }

.seg { display: flex; flex-wrap: wrap; gap: 0; margin: 6px 0 2px; }
.seg label { margin: 0; flex: 1 1 auto; font-size: 0.82rem; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span {
  display: block;
  text-align: center;
  padding: 6px 8px;
  border: 1px solid var(--axis);
  margin-left: -1px;
  cursor: pointer;
  color: var(--ink-2);
  background: var(--page);
  white-space: nowrap;
}
.seg label:first-child span { border-radius: 6px 0 0 6px; margin-left: 0; }
.seg label:last-child span { border-radius: 0 6px 6px 0; }
.seg input:checked + span { background: var(--accent-wash); color: var(--ink); border-color: var(--series-1); position: relative; font-weight: 600; }
.seg.small span { padding: 3px 8px; }
#penalty-box input[type="number"] { margin-top: 6px; }

.choices label { display: flex; gap: 8px; align-items: flex-start; margin: 6px 0; cursor: pointer; }
.choices input { margin-top: 4px; accent-color: var(--series-1); }
.choices span { font-size: 0.8rem; color: var(--ink-2); }
.choices b { display: block; color: var(--ink); font-size: 0.88rem; font-weight: 600; }

.add-row { display: flex; gap: 6px; }
.chips { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.chips li {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--page); border: 1px solid var(--axis); border-radius: 999px;
  padding: 2px 4px 2px 10px; font-size: 0.8rem;
}
.chips button { border: 0; background: none; cursor: pointer; color: var(--ink-2); padding: 0 4px; font-size: 1rem; line-height: 1; min-width: 24px; min-height: 24px; }
.chips .empty { border: 0; background: none; padding: 0; color: var(--muted); }

.btn {
  border: 1px solid var(--axis);
  background: var(--page);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.85rem;
  white-space: nowrap;
}
.btn:hover { border-color: var(--ink-2); }
.btn.primary { background: var(--series-1); border-color: var(--series-1); color: #fff; font-weight: 600; width: 100%; padding: 9px; font-size: 0.95rem; }
.btn.primary:disabled { opacity: 0.55; cursor: progress; }
.btn-row { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.btn-row .btn { flex: 1 1 auto; }
.actions { padding-top: 14px; }

/* Results */
main { min-width: 0; padding-bottom: 24px; }
.status {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px 14px; margin-bottom: 16px; color: var(--ink-2);
}
.status.idle .spinner { display: none; }
.spinner {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid var(--grid); border-top-color: var(--series-1);
  animation: spin 0.9s linear infinite; flex: none;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 3s; } }
.error { background: var(--error-bg); color: var(--error-ink); border-radius: var(--radius); padding: 10px 14px; margin-bottom: 16px; }

.results { transition: opacity 0.2s; }
.results.busy, .results.stale { opacity: 0.5; }
.results > h2 { margin-top: 4px; }
.sub { color: var(--ink-2); margin: 2px 0 0; font-size: 0.88rem; }
.note { color: var(--ink-2); font-size: 0.88rem; margin: 10px 0 16px; }

.tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 14px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.tile .t-label { color: var(--ink-2); font-size: 0.82rem; }
.tile .t-value { font-size: 1.6rem; font-weight: 600; margin: 2px 0; }
.tile .t-sub { color: var(--ink-2); font-size: 0.8rem; font-variant-numeric: tabular-nums; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 16px; min-width: 0; }
.card > header { margin-bottom: 8px; }
.with-toggle { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.with-toggle .seg { margin: 0; }
.toggles { display: flex; gap: 8px; flex-wrap: wrap; }
.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.grid2 .card { margin-bottom: 16px; }
.chart { width: 100%; height: 340px; }
.chart.tall { height: 440px; }

.table-wrap { overflow-x: auto; max-height: 420px; overflow-y: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.85rem; }
th, td { padding: 5px 10px; text-align: right; border-bottom: 1px solid var(--grid); white-space: nowrap; font-variant-numeric: tabular-nums; }
th { position: sticky; top: 0; background: var(--surface); color: var(--ink-2); font-weight: 600; }
th:first-child, td:first-child, th.l, td.l { text-align: left; }
tr.intercept td { color: var(--ink-2); font-style: italic; }

.empty-state p { color: var(--ink-2); max-width: 80ch; }
.example-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 12px; }
.example-list li { display: flex; gap: 12px; align-items: flex-start; }
.example-list .btn { flex: none; min-width: 180px; }
.example-list p { margin: 0; font-size: 0.88rem; }
.example-buttons .btn { font-weight: 600; }
@media (max-width: 600px) {
  .example-list li { flex-direction: column; gap: 4px; }
}

.results-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.band-note { color: var(--ink-2); font-size: 0.82rem; margin: 6px 0 0; }
.settings-card summary, .about summary { cursor: pointer; font-weight: 600; }
.settings-card .sub { margin: 8px 0; }
table.kv th { text-align: left; vertical-align: top; position: static; width: 14em; white-space: normal; }
table.kv td { text-align: left; white-space: normal; overflow-wrap: anywhere; font-variant-numeric: normal; }
.print-only, .print-img { display: none; }
.check { display: flex; gap: 8px; align-items: flex-start; color: var(--ink); font-size: 0.85rem; cursor: pointer; }
.check input { margin-top: 3px; accent-color: var(--series-1); }

.about p { color: var(--ink-2); font-size: 0.9rem; max-width: 90ch; }

@media (max-width: 1100px) {
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid2 { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 800px) {
  .layout { grid-template-columns: minmax(0, 1fr); padding: 0 16px; }
  .site-header, .site-footer { padding: 16px; }
  .controls { position: static; max-height: none; }
  .chart { height: 300px; }
  .chart.tall { height: 380px; }
}
@media (max-width: 480px) {
  .tiles { grid-template-columns: minmax(0, 1fr); }
}

/* Printed report: light colors, no controls, charts as images, tables in full */
@media print {
  :root:not([data-print]), :root[data-theme="dark"] {
    color-scheme: light;
    --page: #ffffff;
    --surface: #ffffff;
    --ink: #0b0b0b;
    --ink-2: #52514e;
    --muted: #898781;
    --grid: #e1e0d9;
    --axis: #c3c2b7;
    --border: #d9d8d2;
    --series-1: #2a78d6;
    --series-2: #eb6834;
  }
  @page { margin: 0.6in; }
  body { font-size: 10pt; background: #fff; }
  .site-header, .controls, .status, .error, #empty, .btn, .seg, .toggles { display: none !important; }
  .layout, .site-footer { display: block; max-width: none; padding: 0; }
  main { padding: 0; }
  .print-only { display: block; }
  .report-head p { margin: 0 0 4pt; color: var(--ink-2); font-size: 9pt; }
  .results.busy, .results.stale { opacity: 1; }
  .tiles { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6pt; }
  .tile { padding: 6pt 8pt; break-inside: avoid; }
  .tile .t-value { font-size: 15pt; }
  .card { border: 0; padding: 0; margin: 0 0 14pt; }
  .card:has(.chart) { break-inside: avoid; }
  .grid2 { display: block; }
  details > summary { list-style: none; font-size: 11pt; }
  details > summary::-webkit-details-marker { display: none; }
  .table-wrap { max-height: none; overflow: visible; }
  th { position: static; }
  thead { display: table-header-group; }
  tr { break-inside: avoid; }
  .print-img[src] { display: block; width: 100%; height: auto; }
  .print-img[src] + .chart { display: none; }
  a { color: inherit; text-decoration: none; }
  .site-footer { font-size: 8.5pt; margin-top: 12pt; }
}