:root {
  --bg: rgb(226, 231, 235);
  --panel: #ffffff;
  --ink: #1b1f23;
  --subtle: #5a6672;
  --h1: rgb(22, 60, 109);
  --h2: rgb(34, 108, 205);
  --line: #c8d2db;
  --error: #b3261e;
  /* data-viz slots: validated all-pairs on this white surface with
     scripts/validate_palette.js. Three is the all-pairs cap, so a fourth
     category folds into Other rather than inventing a hue. */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-other: #898781;
  --chart-surface: #ffffff;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --muted-ink: #898781;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 Geneva, "Liberation Sans", Helvetica, Arial, sans-serif;
}

header {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--h1);
}

header .home { color: #fff; font-weight: 700; text-decoration: none; }
header nav { display: flex; flex-wrap: wrap; gap: 14px; }
header nav a { color: #d8e4f2; text-decoration: none; font-size: 14px; }
header nav a:hover { text-decoration: underline; }
header nav a[aria-current="page"] { color: #fff; font-weight: 600; }

main { max-width: 1100px; margin: 0 auto; padding: 16px; }

h1 { color: var(--h1); font-size: 1.6rem; margin: 0 0 4px; }
h2 { color: var(--h2); font-size: 1.1rem; margin: 24px 0 8px; }

a { color: var(--h2); }

.subtle { color: var(--subtle); font-size: 13px; margin: 2px 0; }
.empty { color: var(--subtle); font-style: italic; }
.error { color: var(--error); white-space: pre-wrap; }

label { display: block; font-size: 13px; color: var(--subtle); margin: 12px 0; }

input[type="search"] {
  display: block;
  width: 100%;
  max-width: 420px;
  margin-top: 4px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font: inherit;
  background: var(--panel);
}

.panels { display: flex; flex-wrap: wrap; gap: 24px; }
.panels > section { flex: 1 1 380px; min-width: 0; }

[data-rows], [data-outgoing], [data-incoming] {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow-x: auto;
}

[aria-busy="true"] { opacity: 0.55; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { position: sticky; top: 0; background: #eef2f6; color: var(--h1); font-size: 13px; }
tr:last-child td { border-bottom: none; }
code { font-size: 12px; word-break: break-all; }

.pagination { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 10px 0; }
.pagination button {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--panel);
  font: inherit;
  cursor: pointer;
}
.pagination button:disabled { opacity: 0.45; cursor: default; }
.pagination .range { color: var(--subtle); font-size: 13px; }

.caveat {
  background: #fff6e0;
  border: 1px solid #e4c777;
  border-radius: 4px;
  padding: 10px 12px;
  font-size: 13px;
}

footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px;
  color: var(--subtle);
  font-size: 12px;
}

@media (max-width: 600px) {
  main { padding: 12px; }
  .panels { gap: 12px; }
}

/* --- map and chart --- */

#map { height: 560px; border: 1px solid var(--line); border-radius: 4px; background: #eef2f6; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 10px 0; padding: 0; list-style: none; }
.legend li { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink); }
.legend .swatch { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--chart-surface); box-shadow: 0 0 0 1px rgba(0,0,0,.18); }

.marker-popup strong { display: block; color: var(--h1); }
.marker-popup .count { font-size: 18px; font-weight: 600; }

.chart { background: var(--chart-surface); border: 1px solid var(--line); border-radius: 4px; padding: 12px 8px 4px; }
.chart svg { display: block; width: 100%; height: auto; }
.chart .grid { stroke: var(--grid); stroke-width: 1; }
.chart .axis { stroke: var(--axis); stroke-width: 1; }
.chart .bar { fill: var(--series-1); }
.chart .hit { fill: transparent; cursor: pointer; }
.chart .hit:hover + .bar, .chart .hit:focus + .bar { fill: #1c5cab; }
.chart text { fill: var(--muted-ink); font-size: 11px; font-family: inherit; }
.chart .value { fill: var(--ink); font-weight: 600; }

.tip {
  position: absolute;
  pointer-events: none;
  background: #1b1f23;
  color: #fff;
  padding: 5px 8px;
  border-radius: 3px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .12s;
  z-index: 500;
}
.tip[data-shown] { opacity: 1; }

details.table-view { margin: 12px 0; }
details.table-view summary { cursor: pointer; font-size: 13px; color: var(--h2); }
details.table-view table { margin-top: 8px; background: var(--chart-surface); border: 1px solid var(--line); border-radius: 4px; }
details.table-view td.num, details.table-view th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* --- copy the entity URI --- */

.uri { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

button.copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  color: var(--subtle);
  cursor: pointer;
  flex: none;
}

button.copy:hover { color: var(--h2); border-color: var(--h2); }
button.copy:focus-visible { outline: 2px solid var(--h2); outline-offset: 1px; }
button.copy[data-state="copied"] { color: #0ca30c; border-color: #0ca30c; }
button.copy[data-state="failed"] { color: var(--error); border-color: var(--error); }

button.copy svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}