/* Youth sports cost investigation — chart chrome per validated reference palette */
:root {
  --page: #f9f9f7;
  --surface-1: #fcfcfb;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);

  --series-real: #2a78d6;     /* blue 450 — real 2025$ */
  --series-nominal: #86b6ef;  /* blue 250 — nominal */
  --series-real-wash: rgba(42, 120, 214, 0.10);
  --highlight: #2a78d6;       /* combined chart: highlighted sport */
  --cpi-all: #e34948;         /* combined chart: CPI all items */
  --cpi-rec: #eda100;         /* combined chart: recreation services CPI */
  --deemph: #c9c8c0;          /* combined chart: unselected sports */

  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;

  --pe-marker: #52514e;
}
:root[data-theme="dark"] {
  --page: #0d0d0d;
  --surface-1: #1a1a19;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --grid: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);

  --series-real: #3987e5;
  --series-nominal: #1c5cab;
  --series-real-wash: rgba(57, 135, 229, 0.12);
  --highlight: #3987e5;
  --cpi-all: #e66767;
  --cpi-rec: #c98500;
  --deemph: #45453f;

  --pe-marker: #c3c2b7;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #0d0d0d;
    --surface-1: #1a1a19;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --grid: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-real: #3987e5;
    --series-nominal: #1c5cab;
    --series-real-wash: rgba(57, 135, 229, 0.12);
    --highlight: #3987e5;
    --cpi-all: #e66767;
    --cpi-rec: #c98500;
    --deemph: #45453f;
    --pe-marker: #c3c2b7;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--text-primary);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px 80px; }

a { color: inherit; text-decoration-color: var(--baseline); text-underline-offset: 2px; }
a:hover { text-decoration-color: currentColor; }

/* ---------- header ---------- */
header.masthead { padding: 56px 0 8px; }
.kicker {
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-muted); margin: 0 0 10px;
}
h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.12; margin: 0 0 14px; letter-spacing: -0.01em; }
.dek { font-size: clamp(16px, 2.4vw, 19px); color: var(--text-secondary); max-width: 780px; margin: 0 0 6px; }
.byline { font-size: 13px; color: var(--text-muted); margin: 14px 0 0; }

.theme-toggle {
  float: right; margin-top: -4px;
  background: var(--surface-1); color: var(--text-secondary);
  border: 1px solid var(--border); border-radius: 999px;
  font: 13px system-ui, sans-serif; padding: 6px 14px; cursor: pointer;
}
.theme-toggle:hover { color: var(--text-primary); }

/* ---------- headline stat row ---------- */
.stat-row {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px; margin: 34px 0 8px;
}
.stat-tile {
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px 20px 16px;
}
.stat-tile .label { font-size: 13px; color: var(--text-secondary); margin: 0 0 6px; }
.stat-tile .value { font-size: 34px; font-weight: 600; line-height: 1.1; }
.stat-tile .note { font-size: 12.5px; color: var(--text-muted); margin-top: 6px; }

/* ---------- sections ---------- */
section { margin-top: 56px; }
h2 { font-size: clamp(22px, 3.4vw, 28px); margin: 0 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 18px; margin: 0 0 8px; }
.section-intro { color: var(--text-secondary); max-width: 780px; margin: 0 0 22px; }
.section-intro strong { color: var(--text-primary); }

/* ---------- controls row ---------- */
.controls {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  margin: 0 0 18px;
}
.controls .hint { font-size: 13px; color: var(--text-muted); }
.seg {
  display: inline-flex; border: 1px solid var(--border); border-radius: 8px;
  overflow: hidden; background: var(--surface-1);
}
.seg button {
  border: 0; background: transparent; color: var(--text-secondary);
  font: 13.5px system-ui, sans-serif; padding: 7px 14px; cursor: pointer;
}
.seg button[aria-pressed="true"] { background: var(--text-primary); color: var(--page); }
.seg button + button { border-left: 1px solid var(--border); }

/* ---------- small multiples grid ---------- */
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.card {
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px 18px 14px;
  display: flex; flex-direction: column;
}
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 2px; }
.card h3 { font-size: 17px; }
.badge {
  font-size: 11.5px; padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text-secondary);
  white-space: nowrap; display: inline-flex; align-items: center; gap: 5px;
}
.badge .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.badge.solid .dot { background: var(--status-good); }
.badge.thin .dot { background: var(--status-warning); }
.badge.anecdotal .dot { background: var(--status-serious); }

.card .cagr { font-size: 13px; color: var(--text-secondary); margin: 0 0 8px; min-height: 1.4em; }
.card .cagr strong { color: var(--text-primary); }
.chart-box { position: relative; height: 220px; }
.chart-box.tall { height: 420px; }
.card .range-note { font-size: 12.5px; color: var(--text-muted); margin: 10px 0 0; }
.card .range-note strong { color: var(--text-secondary); font-weight: 600; }
.card .gap-note { font-size: 12.5px; color: var(--text-muted); margin: 6px 0 0; font-style: italic; }
.card details { margin-top: 8px; }
.card summary { font-size: 12.5px; color: var(--text-muted); cursor: pointer; }
.card table { width: 100%; border-collapse: collapse; font-size: 12.5px; margin-top: 6px; }
.card th, .card td { text-align: right; padding: 3px 6px; border-bottom: 1px solid var(--grid); font-variant-numeric: tabular-nums; }
.card th:first-child, .card td:first-child { text-align: left; }
.card th { color: var(--text-muted); font-weight: 500; }
.src-refs { font-size: 11.5px; color: var(--text-muted); margin-top: 8px; }
.src-refs a { color: var(--text-muted); }

/* legend chips (combined chart) */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 999px;
  color: var(--text-secondary); font: 13px system-ui, sans-serif;
  padding: 5px 12px; cursor: pointer;
}
.chip .key { width: 14px; height: 3px; border-radius: 2px; background: var(--deemph); }
.chip[aria-pressed="true"] { border-color: var(--highlight); color: var(--text-primary); }
.chip[aria-pressed="true"] .key { background: var(--highlight); }
.chip.fixed { cursor: default; }
.chip.fixed.cpi-all .key { background: var(--cpi-all); }
.chip.fixed.cpi-rec .key { background: var(--cpi-rec); }

/* shared chart legend (below cards) */
.legend { display: flex; flex-wrap: wrap; gap: 16px; margin: 4px 0 16px; font-size: 13px; color: var(--text-secondary); }
.legend .item { display: inline-flex; align-items: center; gap: 7px; }
.legend .key { width: 16px; height: 3px; border-radius: 2px; }
.legend .key.real { background: var(--series-real); }
.legend .key.nominal { background: var(--series-nominal); }
.legend .key.pe { width: 3px; height: 14px; background: var(--pe-marker); }

/* ---------- callout ---------- */
.callout {
  background: var(--surface-1); border: 1px solid var(--border);
  border-left: 4px solid var(--cpi-all); border-radius: 10px;
  padding: 22px 24px; margin: 26px 0;
}
.callout h3 { margin-top: 0; }
.callout p { color: var(--text-secondary); font-size: 15px; }
.callout p strong { color: var(--text-primary); }
.callout ul { color: var(--text-secondary); font-size: 15px; padding-left: 20px; }
.callout .fine { font-size: 12.5px; color: var(--text-muted); }

/* ---------- verdict table ---------- */
.verdict-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--surface-1); }
table.verdict { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 720px; }
table.verdict th, table.verdict td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--grid); vertical-align: top; }
table.verdict tr:last-child td { border-bottom: 0; }
table.verdict th { font-size: 12.5px; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; }
table.verdict td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
table.verdict td .sub { display: block; font-size: 12.5px; color: var(--text-muted); }

.verdict-prose { max-width: 800px; color: var(--text-secondary); }
.verdict-prose strong { color: var(--text-primary); }
.verdict-prose h3 { color: var(--text-primary); margin-top: 26px; }

/* ---------- methodology / sources ---------- */
.method { font-size: 14.5px; color: var(--text-secondary); max-width: 800px; }
.method strong { color: var(--text-primary); }
ol.sources { font-size: 13.5px; color: var(--text-secondary); padding-left: 22px; }
ol.sources li { margin-bottom: 9px; }
ol.sources .flag { color: var(--text-muted); font-style: italic; }

.footnote-ref { font-size: 11px; vertical-align: super; color: var(--text-muted); text-decoration: none; }
.footnote-ref:hover { color: var(--text-primary); }

footer { margin-top: 70px; padding-top: 20px; border-top: 1px solid var(--grid); font-size: 13px; color: var(--text-muted); }

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .chart-box { height: 200px; }
  .chart-box.tall { height: 340px; }
  .theme-toggle { float: none; margin: 16px 0 0; }
}

/* fee dataset tier hues (validated aqua/blue pair) */
:root { --tier-rec: #1baf7a; --tier-comp: #2a78d6; }
:root[data-theme="dark"] { --tier-rec: #199e70; --tier-comp: #3987e5; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --tier-rec: #199e70; --tier-comp: #3987e5; }
}
#fees .seg { flex-wrap: wrap; }
#fees .seg button { padding: 6px 11px; }