/* Cusco-stats — app styles.
   Colour roles are CSS custom properties; light and dark values swap in one place.
   Series colours: reference categorical palette (validated, 6 slots, both modes); light slots 3-5
   re-stepped (aqua, lavender, magenta) to reach 3:1 on the chart surface and stay apart under protan/deutan.
   Map ramp: reference sequential blue. Brand accent: terracotta (UI chrome only). */

:root {
  color-scheme: light;
  --surface-0: #f6f4f0;      /* page */
  --surface-1: #fcfcfb;      /* cards, chart surface */
  --surface-2: #efede8;      /* controls, hover wash */
  --hairline: #dedcd6;
  --control-border: #8a8882;  /* 3.4:1 on surface-1: borders of inputs and buttons */
  --grid: #e9e7e2;
  --text-primary: #1d1c1a;
  --text-secondary: #52514e;
  --text-muted: #6f6d68;
  --accent: #a8471f;         /* terracotta, 5.6:1 on surface-1 */
  --accent-soft: #f4e3d9;
  --focus: #2a78d6;
  --ref-line: #1d1c1a;       /* Cusco (department) line */
  --band: rgba(29, 28, 26, 0.12);
  --series-1: #2a78d6; --series-2: #eb6834; --series-3: #41a083;
  --series-4: #a97ec0; --series-5: #b8338a; --series-6: #008300;
  --seq-1: #b7d3f6; --seq-2: #86b6ef; --seq-3: #5598e7; --seq-4: #2a78d6; --seq-5: #1c5cab; --seq-6: #104281;
  --nodata: #d6d4ce;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.04);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface-0: #121211; --surface-1: #1a1a19; --surface-2: #262624;
    --hairline: #383835; --control-border: #74736d; --grid: #2c2c2a;
    --text-primary: #f0efec; --text-secondary: #c3c2b7; --text-muted: #9c9b93;
    --accent: #e58a5f; --accent-soft: #3a2a22; --focus: #3987e5;
    --ref-line: #f0efec; --band: rgba(240, 239, 236, 0.14);
    --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70;
    --series-4: #c98500; --series-5: #d55181; --series-6: #008300;
    /* darker means more in both modes, as maps usually show intensity; evenly spaced steps */
    --seq-1: #cde2fb; --seq-2: #9ec5f4; --seq-3: #6da7ec; --seq-4: #3987e5; --seq-5: #256abf; --seq-6: #184f95;
    --nodata: #3a3a37;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-0: #121211; --surface-1: #1a1a19; --surface-2: #262624;
  --hairline: #383835; --control-border: #74736d; --grid: #2c2c2a;
  --text-primary: #f0efec; --text-secondary: #c3c2b7; --text-muted: #9c9b93;
  --accent: #e58a5f; --accent-soft: #3a2a22; --focus: #3987e5;
  --ref-line: #f0efec; --band: rgba(240, 239, 236, 0.14);
  --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70;
  --series-4: #c98500; --series-5: #d55181; --series-6: #008300;
  --seq-1: #cde2fb; --seq-2: #9ec5f4; --seq-3: #6da7ec; --seq-4: #3987e5; --seq-5: #256abf; --seq-6: #184f95;
  --nodata: #3a3a37;
  --shadow: none;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--surface-0);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }

.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 16px; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--surface-1); padding: 8px 12px; border-radius: 6px; z-index: 10; }
.skip-link:focus { left: 8px; }

/* Header */
.site-header { background: var(--surface-1); border-bottom: 1px solid var(--hairline); }
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand-mark { width: 28px; height: 28px; fill: var(--accent); flex: none; }
.brand-name { margin: 0; font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand-tag { margin: 0; font-size: 12.5px; color: var(--text-secondary); }
.site-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-link { color: var(--text-secondary); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-size: 14px; }
.nav-link.is-active { color: var(--text-primary); background: var(--surface-2); font-weight: 600; }
.lang-switch, .segmented { display: inline-flex; border: 1px solid var(--control-border); border-radius: 8px; overflow: hidden; }
.lang-switch button, .segmented button {
  border: 0; background: transparent; color: var(--text-secondary); padding: 6px 10px; font: inherit; font-size: 13px; cursor: pointer; min-height: 32px;
}
.lang-switch button + button, .segmented button + button { border-left: 1px solid var(--control-border); }
.lang-switch button[aria-pressed="true"], .segmented button[aria-pressed="true"] { background: var(--accent-soft); color: var(--text-primary); font-weight: 600; box-shadow: inset 0 -2px 0 var(--accent); }

/* Story */
.story { background: var(--surface-1); border-bottom: 1px solid var(--hairline); padding: 32px 0 24px; }
.story-head { max-width: 760px; margin-bottom: 8px; }
.story-kicker { margin: 0; font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); }
.story-head h1 { margin: 4px 0 10px; font-size: 32px; letter-spacing: -0.02em; line-height: 1.15; }
.story-intro { margin: 0 0 8px; font-size: 16.5px; color: var(--text-primary); line-height: 1.6; }
.story-note { margin: 0; font-size: 13px; color: var(--text-muted); }
.story-step { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.6fr); gap: 28px; padding: 36px 0; border-top: 1px solid var(--hairline); }
.story-step:first-child { margin-top: 24px; }
#story-steps:empty { min-height: 100vh; }   /* until the script adds the steps: keep the explorer below the fold, so it does not jump */
.story-num { margin: 0; font-size: 13px; font-weight: 700; color: var(--accent); }
.story-title { margin: 2px 0 10px; font-size: 21px; letter-spacing: -0.01em; line-height: 1.25; }
.story-body { margin: 0 0 14px; font-size: 15.5px; line-height: 1.65; }
.story-links { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; }
.btn-explore { font: inherit; font-size: 13.5px; color: var(--accent); background: transparent; border: 0; padding: 4px 0; cursor: pointer; text-align: left; min-height: 28px; text-decoration: none; }
.btn-explore:hover { text-decoration: underline; text-decoration-thickness: 2px; }
.btn-explore.is-primary { display: inline-block; margin-top: 8px; padding: 8px 14px; border: 1px solid var(--accent); border-radius: 8px; font-weight: 600; }
.btn-explore.is-primary:hover { background: var(--accent-soft); text-decoration: none; }
.story-figure { margin: 0; min-width: 0; }
.story-caption { font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.story-chart { min-height: 220px; }
.story-chart .grid line, .story-chart .grid path { stroke: var(--grid); }
.story-chart .axis text { fill: var(--text-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.story-chart .axis path, .story-chart .axis line { stroke: var(--hairline); }
.story-multiples { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px 20px; }
.story-panel-title { margin: 0 0 2px; font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.story-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.story-hint { font-size: 12.5px; color: var(--text-muted); margin: 6px 0 0; }
.bar-label { fill: var(--text-secondary); font-size: 12.5px; }
.bar-value { fill: var(--text-secondary); font-size: 12px; font-variant-numeric: tabular-nums; }
.bar-value.is-strong { fill: var(--text-primary); font-weight: 650; }
.story-end { border-top: 1px solid var(--hairline); padding-top: 24px; max-width: 760px; }
.story-end p { margin: 0; color: var(--text-secondary); }
.explorer-title { margin: 0 0 6px; font-size: 26px; letter-spacing: -0.015em; }
.explorer { padding-top: 8px; }

/* Intro and controls */
.intro { padding: 24px 0 8px; max-width: 760px; }
.intro h1 { margin: 0 0 6px; font-size: 26px; letter-spacing: -0.015em; }
.intro p { margin: 0; color: var(--text-secondary); }
.controls { display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: flex-end; padding: 16px 0 8px; }
.control { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.control-grow { flex: 1 1 240px; }
.control label, .control-label { font-size: 12.5px; color: var(--text-secondary); font-weight: 600; }
select, input[type="text"] {
  font: inherit; font-size: 14px; color: var(--text-primary); background: var(--surface-1);
  border: 1px solid var(--control-border); border-radius: 8px; padding: 7px 10px; min-height: 36px; max-width: 100%;
}
#sel-indicator { min-width: min(360px, 100%); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 4px 0 4px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; background: var(--surface-1); border: 1px solid var(--hairline);
  border-radius: 999px; padding: 4px 6px 4px 10px; font-size: 13.5px;
}
.chip-key { width: 14px; height: 3px; border-radius: 2px; flex: none; }
.chip.is-missing { color: var(--text-muted); }
.chip.is-missing .chip-key { background: transparent !important; outline: 1px dashed var(--text-muted); }
.chip button { border: 0; background: transparent; color: var(--text-muted); cursor: pointer; font-size: 16px; line-height: 1; padding: 2px 6px; border-radius: 999px; min-width: 24px; min-height: 24px; }
.chip button:hover { background: var(--surface-2); color: var(--text-primary); }
.chip.is-ref { padding-right: 10px; font-weight: 600; }
.status { min-height: 1.4em; margin: 2px 0 8px; font-size: 13px; color: var(--text-muted); }

/* Cards */
.grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 16px; padding-bottom: 32px; align-items: start; }
.card { background: var(--surface-1); border: 1px solid var(--hairline); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); min-width: 0; }
.card-notes { grid-column: 1 / -1; }
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.card-title { margin: 0; font-size: 16px; font-weight: 650; letter-spacing: -0.005em; }
.card-subtitle { margin: 2px 0 0; font-size: 13px; color: var(--text-secondary); }
.card-tools { display: flex; gap: 6px; }
.btn-ghost { font: inherit; font-size: 13px; color: var(--text-secondary); background: transparent; border: 1px solid var(--control-border); border-radius: 8px; padding: 5px 10px; cursor: pointer; min-height: 32px; }
.btn-ghost:hover { background: var(--surface-2); color: var(--text-primary); }
.tag { display: inline-block; font-size: 11.5px; font-weight: 600; color: var(--accent); background: var(--accent-soft); border-radius: 4px; padding: 1px 6px; margin-left: 6px; vertical-align: 1px; }

/* Chart */
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 12px 0 4px; font-size: 13px; color: var(--text-secondary); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-key { width: 18px; height: 2px; border-radius: 2px; }
.legend-key.is-ref { height: 3px; }
.legend-key.is-band { height: 10px; border-radius: 2px; }
.chart { position: relative; width: 100%; }
.chart svg, .map svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .axis text, .map-legend text { fill: var(--text-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.chart .axis path, .chart .axis line { stroke: var(--hairline); }
.chart .grid line { stroke: var(--grid); }
.chart .axis-title { fill: var(--text-secondary); font-size: 12px; }
.chart .crosshair { stroke: var(--text-muted); stroke-width: 1; }
.chart .direct-label { font-size: 12px; fill: var(--text-secondary); }
.chart .overlay { fill: transparent; cursor: crosshair; }
.chart .overlay:focus { outline: none; }
.chart:has(.overlay:focus-visible) .frame { stroke: var(--focus); stroke-width: 2; }
.chart .overlay { touch-action: pan-y; }
.empty { padding: 48px 8px; text-align: center; color: var(--text-muted); font-size: 14px; }

/* Map */
.map-year { display: flex; align-items: center; gap: 12px; margin: 12px 0 4px; font-size: 13px; color: var(--text-secondary); flex-wrap: wrap; }
.map-year label { font-weight: 600; white-space: nowrap; }
.map-year output { font-variant-numeric: tabular-nums; color: var(--text-primary); }
.map-year input[type="range"] { flex: 1 1 160px; accent-color: var(--accent); min-height: 24px; }
.map .district { stroke: var(--surface-1); stroke-width: 0.6; cursor: pointer; }
.map .district:hover { filter: brightness(1.08); stroke: var(--text-primary); stroke-width: 1.2; }
.map .district.is-selected { stroke-width: 2.4; }
.map > .empty { aspect-ratio: 25 / 28; display: flex; align-items: center; justify-content: center; padding: 8px; margin: 0; }   /* the map's own shape, while it loads */
.map .province { fill: none; stroke: var(--text-primary); stroke-width: 1.1; stroke-opacity: 0.75; pointer-events: none; }
.map-tools { margin-top: 10px; }
.map-table { max-height: 360px; overflow-y: auto; }
.map-legend { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px 12px; font-size: 12.5px; color: var(--text-secondary); }
.map-legend .swatch { display: inline-flex; align-items: center; gap: 6px; }
.map-legend .box { width: 18px; height: 12px; border-radius: 3px; flex: none; }

/* Table */
.table-wrap { overflow-x: auto; margin-top: 12px; border-top: 1px solid var(--hairline); }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
caption { text-align: left; font-size: 12.5px; color: var(--text-secondary); padding: 8px 10px 4px; }
tbody th { font-weight: 400; color: var(--text-primary); }
th, td { padding: 6px 10px; text-align: right; border-bottom: 1px solid var(--grid); font-variant-numeric: tabular-nums; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th { color: var(--text-secondary); font-weight: 600; position: sticky; top: 0; background: var(--surface-1); }

/* Notes */
.notes { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px 28px; margin-top: 8px; font-size: 14px; }
.notes h3 { margin: 0 0 4px; font-size: 12.5px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.04em; }
.notes p { margin: 0 0 8px; }
.notes .muted { color: var(--text-muted); font-size: 13px; }

/* Tooltip */
.tooltip {
  position: fixed; z-index: 20; pointer-events: none; background: var(--surface-1); color: var(--text-primary);
  border: 1px solid var(--hairline); border-radius: 8px; padding: 8px 10px; font-size: 13px; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  max-width: 280px;
}
.tooltip .tt-head { font-weight: 650; margin-bottom: 4px; }
.tooltip .tt-row { display: grid; grid-template-columns: 14px auto 1fr; gap: 6px; align-items: baseline; }
.tooltip .tt-key { width: 12px; height: 2px; border-radius: 2px; align-self: center; }
.tooltip .tt-val { font-weight: 650; font-variant-numeric: tabular-nums; }
.tooltip .tt-name { color: var(--text-secondary); }
.tooltip .tt-note { color: var(--text-muted); font-size: 12px; margin-top: 4px; }

.site-footer { border-top: 1px solid var(--hairline); background: var(--surface-1); color: var(--text-secondary); font-size: 13px; padding: 16px 0 24px; }
.site-footer p { margin: 4px 0; }

/* Methods & data page */
.brand-link { color: inherit; text-decoration: none; }
.brand-link .brand-name, .brand-link .brand-tag { display: block; }
.brand-link:hover .brand-name { color: var(--accent); }
.methods { padding-top: 32px; padding-bottom: 48px; }
.methods:focus { outline: none; }
.methods-head { max-width: 760px; margin-bottom: 24px; }
.methods-head h1 { margin: 4px 0 10px; font-size: 32px; letter-spacing: -0.02em; line-height: 1.15; }
.methods-lede { margin: 0; font-size: 17px; line-height: 1.6; color: var(--text-secondary); }
.methods-lede:empty { min-height: 3.2em; }   /* its two lines, until the script fills it */
.methods-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 40px; align-items: start; }
.methods-toc { position: sticky; top: 16px; font-size: 13.5px; }
.methods-toc-title { margin: 0 0 8px; font-size: 12px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; }
.methods-toc ol { margin: 0; padding: 0 0 0 18px; color: var(--text-muted); }
.methods-toc li { margin: 0 0 6px; }
.methods-toc a { color: var(--text-secondary); text-decoration: none; }
.methods-toc a:hover { color: var(--accent); text-decoration: underline; }
.methods-body { max-width: 780px; min-width: 0; min-height: 100vh; }   /* the footer starts below the fold until the text is in */
.methods-section { padding: 8px 0 28px; border-bottom: 1px solid var(--hairline); margin-bottom: 20px; scroll-margin-top: 16px; }
.methods-section:last-child { border-bottom: 0; }
.methods-section h2 { font-size: 22px; letter-spacing: -0.01em; margin: 8px 0 12px; }
.methods-section p, .methods-section li { font-size: 15.5px; line-height: 1.65; }
.methods-section p { margin: 0 0 12px; }
.methods-section ul, .methods-section ol { margin: 0 0 12px; padding-left: 22px; }
.methods-section li { margin-bottom: 6px; }
.methods-section a { color: var(--accent); }
.methods-section code { font-size: 0.9em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.methods-note { background: var(--accent-soft); border-left: 3px solid var(--accent); padding: 10px 14px; border-radius: 0 8px 8px 0; }
.methods-cite { margin: 0 0 12px; }
.methods-cite blockquote { margin: 0; padding: 12px 16px; background: var(--surface-1); border: 1px solid var(--hairline); border-radius: 8px; font-size: 14.5px; line-height: 1.6; }
.methods-table th, .methods-table td { white-space: normal; text-align: left; vertical-align: top; font-size: 14px; }
.methods-table tbody th { font-weight: 600; }
.catalogue-cat { font-size: 16px; margin: 24px 0 10px; color: var(--text-primary); }
.catalogue { display: grid; gap: 12px; }
.cat-item { background: var(--surface-1); border: 1px solid var(--hairline); border-radius: var(--radius); padding: 14px 16px; scroll-margin-top: 16px; }
.cat-item:target, .cat-item.is-target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.cat-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; justify-content: space-between; }
.cat-head h4 { margin: 0; font-size: 15.5px; }
.cat-open { font-size: 13px; color: var(--accent); white-space: nowrap; }
.methods-section .cat-desc { margin: 6px 0 10px; font-size: 14.5px; color: var(--text-secondary); }
.cat-facts { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 6px 14px; margin: 0; font-size: 13.5px; }
.cat-facts dt { color: var(--text-muted); }
.cat-facts dd { margin: 0; }
.cat-facts ul { list-style: none; padding: 0; margin: 0; }
.methods-section .cat-facts li { font-size: 13.5px; line-height: 1.5; margin: 0 0 2px; }
.cat-m { font-weight: 600; }
.cat-map { color: var(--text-muted); }
.cat-codes { color: var(--text-muted); }
@media (max-width: 900px) {
  .methods-layout { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .methods-toc { position: static; background: var(--surface-1); border: 1px solid var(--hairline); border-radius: var(--radius); padding: 12px 14px; }
  .methods-head h1 { font-size: 26px; }
  .methods-lede:empty { min-height: 6.4em; }
  .methods-toc ol:empty { min-height: 19em; }   /* ten entries, above the text on narrow screens */
  .cat-facts { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .cat-facts dd { margin-bottom: 6px; }
}

@media (max-width: 900px) {
  .grid { grid-template-columns: minmax(0, 1fr); }
  .story-step { grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 28px 0; }
  .story-split { grid-template-columns: minmax(0, 1fr); }
  .story-head h1 { font-size: 26px; }
  .explorer-title { font-size: 22px; }
  .header-inner { gap: 12px; }
  .intro h1 { font-size: 22px; }
  #sel-indicator { min-width: 0; width: 100%; }
  .control { flex: 1 1 100%; }
  .control#ctl-units { flex: 0 0 auto; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media (forced-colors: active) { .chip-key, .legend-key, .tt-key { forced-color-adjust: none; } }