/* A printed atlas. Warm paper and ink, Libre Caslon Text (SIL OFL, static/fonts/) for names,
   numbers and prose; a quiet sans for the small UI text. The data colours (query ink, match red,
   rank colours, chart washes) stand out against it. */

@font-face {
  font-family: "Libre Caslon Text";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libre-caslon-text-latin-400-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Libre Caslon Text";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libre-caslon-text-latin-ext-400-normal.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Libre Caslon Text";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libre-caslon-text-latin-400-italic.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Libre Caslon Text";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/libre-caslon-text-latin-ext-400-italic.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Libre Caslon Text";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(fonts/libre-caslon-text-latin-700-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Libre Caslon Text";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(fonts/libre-caslon-text-latin-ext-700-normal.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --bg: #fbf8f1;        /* inputs and buttons: a lighter sheet on the paper */
  --panel: #f3eee2;     /* the paper */
  --border: #ddd4c2;    /* hairline rules */
  --rule: #b9ad96;      /* the heavier rules that set sections apart */
  --text: #2a251e;      /* warm ink */
  --muted: #7a6f5f;
  --query: #2a2420;     /* query: ink, like its star on the map */
  --match: #b5482f;     /* the compared match in charts and tables: one red, like a map's overprint
                           (rank colours only set matches against each other) */
  --hover: #ebe4d4;     /* hovered rows and suggestions; pressed toggles */
  --selected: #ece2e4;  /* the selected match: a whisper of red, on paper */
  --error-bg: #fdf0ec;
  --error: #a33a14;
  --diff-bar: #a99d87;  /* the "what makes up the difference" bars */
  --serif: "Libre Caslon Text", "Iowan Old Style", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-family: var(--sans);
  font-size: 13px;
  /* old-style figures in running text, lining ones in tables and charts. A feature setting rather
     than font-variant-numeric, which every `font:` shorthand below would reset */
  font-feature-settings: "onum";
  color: var(--text);
}

* { box-sizing: border-box; }
::selection { background: #e4d8bd; }

html, body { height: 100%; margin: 0; }

body {
  background: var(--bg);
  display: grid;
  --panel-width: 400px;
  grid-template-columns: 1fr var(--panel-width);
  overflow: hidden;
}

#map { height: 100dvh; }

#panel {
  height: 100dvh;
  overflow-y: auto;
  scrollbar-gutter: stable; /* a scrollbar appearing doesn't change the width the charts are drawn at */
  border-left: 1px solid var(--rule);
  background: var(--panel);
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* search and buttons: squared off, on the lighter sheet */
.search-row { display: flex; gap: 6px; }
.search { position: relative; flex: 1; }

#search {
  width: 100%;
  padding: 8px 10px;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
}
#search:focus { outline: 1px solid var(--rule); outline-offset: 0; border-color: var(--rule); }
#search::placeholder { color: var(--muted); }

button {
  font: inherit;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  cursor: pointer;
}
@media (hover: hover) { button:hover { background: var(--hover); } }
#locate { color: var(--text); }

#suggestions {
  position: absolute;
  z-index: 10;
  top: 100%;
  left: 0;
  right: 0;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  box-shadow: 0 3px 10px rgb(60 45 20 / 0.12);
  max-height: 320px;
  overflow-y: auto;
}
#suggestions li { padding: 6px 9px; cursor: pointer; }
#suggestions li .pop { color: var(--muted); font-size: 12px; margin-left: 4px; }
#suggestions li .matched { color: var(--muted); font-style: italic; margin-left: 4px; }
#suggestions li[aria-selected="true"] { background: var(--hover); }
@media (hover: hover) { #suggestions li:hover { background: var(--hover); } }

/* settings: behind "Adjust" (collapsed), and not before there's a place to adjust */
.adjust {
  display: block;
  align-self: flex-start;
  padding: 0;
  border: 0;
  background: none;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.02em;
}
.adjust::after { content: " ▸"; font-size: 10px; }
.adjust[aria-expanded="true"]::after { content: " ▾"; }
@media (hover: hover) { .adjust:hover { background: none; color: var(--text); } }
.adjust[aria-expanded="false"] + .controls,
#empty:not([hidden]) ~ .adjust,
#empty:not([hidden]) ~ .controls { display: none; }

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 12px;
  margin-top: -4px;
  padding: 8px 0 4px;
  font-size: 12px;
  color: var(--muted);
}
.controls label { display: flex; flex-direction: column; }
.controls output { color: var(--text); font-variant-numeric: tabular-nums; }
.controls input[type="range"] { width: 100%; margin: 2px 0 0; }
.controls input { accent-color: #6d6152; } /* controls stay neutral; colour is for data */
.controls .check { flex-direction: row; align-items: center; gap: 4px; }

/* metric / US units: a two-option segmented control */
.units { display: flex; justify-self: end; align-self: center; }
.units button { padding: 2px 7px; font-size: 11px; color: var(--muted); border-radius: 0; }
.units button:first-child { border-radius: 2px 0 0 2px; }
.units button:last-child { border-radius: 0 2px 2px 0; margin-left: -1px; }
.units button[aria-pressed="true"] { background: var(--hover); color: var(--text); font-weight: 600; }

.message {
  margin: 0;
  padding: 7px 9px;
  border-radius: 6px;
  background: var(--error-bg);
  color: var(--error);
}
.message.info { background: #eef4fb; color: #1c4f8f; }

.intro h1 { margin: 0; font: 400 28px/1.1 var(--serif); letter-spacing: -0.005em; }
.intro p { margin: 6px 0 0; font: 14px/1.4 var(--serif); color: var(--muted); }

/* first load: the headline, the search box and one line */
.start { line-height: 1.45; }
.start .howto { margin: 0; color: var(--muted); }

/* the query: its name set large, then where it is */
#query-summary { border-top: 1px solid var(--rule); padding-top: 14px; }
#query-summary h2 { margin: 0; font-size: 16px; font-weight: 400; }
#query-summary h2 .star { color: var(--query); font-size: 18px; vertical-align: 6px; margin-right: 2px; }
#query-summary h2 .primary { font: 400 30px/1.1 var(--serif); letter-spacing: -0.01em; }
#query-summary h2 .secondary { display: block; margin-top: 4px; font: 15px/1.3 var(--serif); }
#query-summary .coords { margin-top: 2px; color: var(--muted); font-size: 11px; letter-spacing: 0.02em; }

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 3px 14px;
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
}
.stats b { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }

/* section heads: small spaced capitals, as on a map's key */
#query-summary h3.twins,
#compare h4 {
  margin: 18px 0 0;
  font: 400 11px/1.3 var(--sans);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* the list, or one match's comparison in its place */
#list:not([hidden]) { display: flex; flex-direction: column; gap: 12px; }

/* the twins: a serif rank, the name on two lines, then the comparison */
#results {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
#results:empty { border: 0; }
#results li { border-bottom: 1px solid var(--border); }
#results .row {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 0 8px;
  align-items: baseline;
  width: 100%;
  padding: 9px 6px 10px 2px;
  border: 0;
  border-radius: 0;
  background: none;
  color: inherit;
  text-align: left;
}
#results .row:focus-visible { outline-offset: -2px; }
#results li.hover { background: var(--hover); }
@media (hover: hover) { #results li:hover { background: var(--hover); } }
#results li.selected { background: var(--selected); box-shadow: inset 2px 0 var(--rank-color); }
#results .rank { font: 400 20px/1 var(--serif); color: var(--rank-color, var(--text)); text-align: right; padding-right: 4px; }
#results .label { overflow: hidden; text-overflow: ellipsis; }
#results .label .primary {
  display: block;
  font: 400 15px/1.3 var(--serif);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#results .flags { font-size: 12px; white-space: nowrap; }
#results .meta { grid-column: 2 / -1; font-size: 12px; color: var(--muted); }
#results .label .secondary { font-size: 12px; color: var(--muted); }
#results .label .secondary + .meta::before { content: " · "; }
#results .ruler { margin-top: 3px; font: 13px/1.35 var(--serif); color: var(--text); }
#results .shift { color: var(--text); cursor: help; }
#results .none { padding: 9px 2px; color: var(--muted); font-style: italic; }

/* over the comparison, staying in view: back to the list, and a step to either side by rank */
.detail-nav {
  position: sticky;
  top: -20px; /* the panel's top padding: it sticks at the panel's edge */
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.detail-nav button { height: 30px; }
.detail-nav .back { padding: 0 12px 0 0; border: 0; background: none; color: var(--text); }
@media (hover: hover) { .detail-nav .back:hover { background: none; text-decoration: underline; text-underline-offset: 3px; } }
.stepper { display: flex; align-items: center; gap: 0; color: var(--muted); font-size: 12px; }
.stepper #position { padding: 0 8px; font-feature-settings: "lnum", "tnum"; }
.stepper button { width: 30px; padding: 0 0 2px; color: var(--text); font: 400 18px/1 var(--serif); }
.stepper button:disabled { color: var(--border); background: none; cursor: default; }

/* at the comparison's foot: the neighbouring twins, by name */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 22px;
  border-top: 1px solid var(--rule);
}
.pager button {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 8px 0 9px;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--text);
  text-align: left;
}
@media (hover: hover) { .pager button:hover { background: none; } .pager button:hover .name { text-decoration: underline; text-underline-offset: 3px; } }
.pager button[hidden] { display: none; }
.pager .next-twin { grid-column: 2; align-items: flex-end; text-align: right; }
.pager .direction { font: 400 11px/1.3 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.pager .name { font: 400 15px/1.3 var(--serif); }
.pager .rank { margin-right: 2px; color: var(--rank-color, var(--text)); }

#compare { padding-top: 16px; }
#compare h3:focus { outline: none; } /* focused for screen readers on opening, not as a control */
/* the rank hangs in its own column, as in the list, so "2" and "64 mi" don't run together */
#compare h3 { display: grid; grid-template-columns: auto 1fr; column-gap: 10px; align-items: baseline; margin: 0 0 6px; font-size: 15px; font-weight: 400; }
#compare h3 .rank { grid-row: span 2; font: 400 22px/1 var(--serif); color: var(--match); }
#compare h3 .primary { font: 400 22px/1.2 var(--serif); }
#compare h3 .secondary { grid-column: 2; margin-top: 3px; font: 14px/1.3 var(--serif); }
#compare .note { font-size: 12px; color: var(--muted); margin: 2px 0; }
#compare .verdict { margin: 12px 0 10px; font: 400 15px/1.5 var(--serif); }
.nowrap { white-space: nowrap; }
.tip { cursor: help; text-decoration: underline dotted; text-underline-offset: 2px; }
#compare figure { margin: 0; }

.key { display: flex; gap: 14px; font-size: 12px; font-weight: 500; margin: 2px 0; }
.key .query { --c: var(--query); }
.key .match { --c: var(--match); }
.key span { color: var(--c); }
.key span::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 1px;
  margin-right: 5px;
  vertical-align: -1px;
  background: var(--c);
}
table.summary th.query { color: var(--query); }
table.summary th.match { color: var(--match); }

table.summary { border-collapse: collapse; width: 100%; font: 400 13px/1.3 var(--serif); font-feature-settings: "lnum"; }
table.summary th, table.summary td { padding: 4px 4px; border-bottom: 1px solid var(--border); text-align: right; }
table.summary th:first-child, table.summary td:first-child { text-align: left; color: var(--muted); font-weight: normal; font-family: var(--sans); font-size: 12px; }
table.summary thead th { font-weight: 400; font-style: italic; border-bottom-color: var(--rule); }

/* charts (Observable Plot): serif figures, warm ink for axes and grid, tooltips on paper */
#compare svg {
  overflow: visible;
  font-family: var(--serif);
  font-size: 10.5px;
  font-feature-settings: "lnum", "tnum";
  color: var(--muted);
  --plot-background: var(--bg);
}
/* tooltips stay in the sans: Plot spaces their lines for it, and the serif's taller lines collide */
#compare svg [aria-label="tip"] { font-family: var(--sans); }

/* data credits and byline, at the foot of the panel (pushed down when the panel is short) */
.credits { margin-top: auto; padding-top: 12px; font-size: 11px; line-height: 1.6; color: var(--muted); }
.credits a { color: inherit; text-decoration-color: var(--border); text-underline-offset: 2px; }

/* ------------------------------------------------------------------------ the map's furniture
   in ink and the serif: the query star, the merged pins' tooltip, the heatmap legend and
   MapLibre's own controls */

.marker-query {
  font-size: 26px;
  line-height: 1;
  color: #2a2420;
  text-shadow: 0 0 1px #f7f1e3, 0 0 2px #f7f1e3, 0 0 3px #f7f1e3, 0 0 4px #f7f1e3;
  cursor: default;
}

/* hover tooltip on a merged match pin: the ranks inside */
.merged-tip .maplibregl-popup-content {
  padding: 3px 8px 2px;
  font: 600 13px/1.3 var(--serif);
  color: #2a2420;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 2px;
  box-shadow: none;
}
.merged-tip .maplibregl-popup-tip { border-top-color: var(--rule); border-bottom-color: var(--rule); }

.legend {
  position: absolute;
  left: 10px;
  bottom: 28px;
  z-index: 5;
  background: rgb(251 248 241 / 0.94);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 6px 10px 4px;
  font-family: var(--serif);
  font-size: 11px;
  color: #5a4a3c;
  width: 240px;
}
.legend .title {
  margin-bottom: 5px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #2a2420;
}
.legend .bar { height: 7px; box-shadow: inset 0 0 0 0.5px rgb(42 36 32 / 0.35); }
.legend .ticks { position: relative; height: 14px; font-variant-numeric: oldstyle-nums; }
.legend .ticks span { position: absolute; transform: translateX(-50%); white-space: nowrap; top: 2px; }
.legend .ticks span:first-child { transform: none; }
.legend .ticks span:last-child { transform: translateX(-100%); }
.legend .excluded { display: flex; align-items: center; gap: 6px; margin-top: 4px; font-style: italic; }
.legend .excluded .swatch { width: 14px; height: 7px; flex: none; }

/* Until the visitor's first query: how to start, over the map below its middle, letting clicks
   through. */
.map-hint {
  position: absolute;
  top: 62%; /* its middle */
  transform: translateY(-50%);
  left: 0;
  right: var(--panel-width);
  width: max-content;
  max-width: calc(100% - var(--panel-width) - 32px);
  margin: 0 auto;
  z-index: 4;
  pointer-events: none;
  background: rgb(251 248 241 / 0.94);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 5px 14px 6px;
  font: 400 19px/1.25 var(--serif);
  color: var(--text);
  transition: opacity 1s;
}
.map-hint.fading { opacity: 0; }
.map-hint:not(.linked) .more { display: none; }
/* over results: aside, above the legend (its bottom, plus its 69px height, plus the gap at its left) */
.map-hint.linked { top: auto; bottom: calc(28px + 69px + 10px); transform: none; left: 10px; right: auto; margin: 0; font-size: 16px; }
.map-hint .coarse { display: none; }
@media (pointer: coarse) { .map-hint .fine { display: none; } .map-hint .coarse { display: inline; } }

/* MapLibre's controls, quietened to match: paper buttons and a serif attribution. The selectors
   match maplibre-gl.css's own, so that these, coming later, win. */
.maplibregl-ctrl-group { background: var(--bg); border-radius: 2px; }
.maplibregl-ctrl-group:not(:empty) { box-shadow: 0 0 0 1px var(--border); }
.maplibregl-ctrl-group button + button { border-top-color: var(--border); }
.maplibregl-ctrl-attrib.maplibregl-compact {
  background: rgb(251 248 241 / 0.9);
  border-radius: 2px;
  box-shadow: 0 0 0 1px var(--border);
}
.maplibregl-ctrl.maplibregl-ctrl-attrib { font: italic 11px/1.5 var(--serif); color: var(--muted); }
.maplibregl-ctrl-attrib a { color: inherit; }

/* Beside the panel, a map under 600px wide has no room for the legend and the attribution along
   its bottom, so the legend moves to its top right. */
@media (max-width: 1000px) {
  .legend { left: auto; right: calc(var(--panel-width) + 6px); top: 6px; bottom: auto; }
  .map-hint.linked { bottom: 48px; }
}

/* Narrow screens, where the panel would take more than half the width: the map on top, the panel
   below it as its own scrolling sheet. */
@media (max-width: 800px) {
  body { grid-template-columns: 1fr; grid-template-rows: 45dvh 1fr; height: 100dvh; }
  #map { height: auto; }
  #panel {
    height: auto;
    min-height: 0;
    border-left: 0;
    border-top: 1px solid var(--rule);
    padding: 14px 16px 24px;
  }
  .intro h1 { font-size: 24px; }
  #search { font-size: 16px; } /* below 16px, iOS zooms the page in on focus */
  button { padding: 8px 12px; }
  .units button { padding: 6px 9px; font-size: 12px; }
  #query-summary h2 .primary { font-size: 26px; }
  #results .row { padding: 10px 6px 11px 2px; }
  .detail-nav { top: -14px; }
  .stepper button { width: 36px; }
  /* top right of the map: the legend is placed against the page, and the panel fills its bottom */
  .legend { width: 196px; left: auto; right: 6px; top: 6px; bottom: auto; padding: 4px 8px 2px; font-size: 10px; }
  .legend .title { font-size: 9px; letter-spacing: 0.1em; white-space: nowrap; }
  /* low on the short map, just above the attribution */
  .map-hint { top: auto; bottom: calc(55dvh + 60px); transform: none; right: 0; max-width: calc(100% - 32px); padding: 4px 12px 5px; font-size: 16px; }
  .map-hint.linked { bottom: calc(55dvh + 52px); left: 10px; font-size: 14px; }
}