/* NEPI Atlas — one type system, one spacing rhythm.
 *
 * Type scale (rem): 0.7 caption · 0.8 body-small · 0.9 body · 1.0 h2 · 1.15 h1.
 * Section labels are 0.75 uppercase. All numbers render tabular.
 * Letter chips share the .chip class; text colour flips dark on the pale
 * mid-bands (C/D/E) for contrast — set in app.js alongside the background.
 */

:root {
  --ink: #1d2733;
  --ink-2: #5a6675;
  --ink-3: #98a1ac;
  --line: #e3e7ec;
  --bg: #ffffff;
  --panel: #fafbfc;
  --accent: #0a6e8a;
  --radius: 8px;
  --fs-caption: 0.7rem;
  --fs-small: 0.8rem;
  --fs-body: 0.9rem;
}

* { box-sizing: border-box; margin: 0; }

html { font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif; }

body {
  color: var(--ink);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  height: 100vh;
  font-size: var(--fs-body);
  line-height: 1.5;
}

button, input, output { font: inherit; color: inherit; }

h1, h2, h3 { line-height: 1.25; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---------- header / footer ---------- */

header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.65rem 1.1rem;
  border-bottom: 1px solid var(--line);
}
header h1 { font-size: 1.15rem; font-weight: 700; letter-spacing: 0.01em; }
header .tagline { color: var(--ink-2); font-size: var(--fs-small); flex: 1; }
header nav { display: flex; gap: 0.8rem; align-items: center; font-size: var(--fs-small); }
#search {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.35rem 0.6rem;
  font-size: var(--fs-small);
  width: 9.5rem;
  background: var(--bg);
}

.banner {
  background: #fff7e0;
  color: #7a5200;
  border-bottom: 1px solid #f0e0b0;
  padding: 0.35rem 1.1rem;
  font-size: var(--fs-caption);
  font-weight: 600;
}

footer {
  border-top: 1px solid var(--line);
  padding: 0.5rem 1.1rem;
  font-size: var(--fs-caption);
  color: var(--ink-2);
}

/* ---------- layout ---------- */

main { flex: 1; display: flex; min-height: 0; }
#map { flex: 1; background: #eef1f4; }

aside#panel {
  width: 42%;
  min-width: 34rem;
  overflow-y: auto;
  border-left: 1px solid var(--line);
  background: var(--panel);
  padding: 1rem 1.1rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 1.3rem;
  align-content: start;
}
#intro { grid-column: 1 / -1; }
#national { grid-column: 1; }
#controls { grid-column: 2; }
#card { grid-column: 1 / -1; }
aside section + section { margin-top: 0; }
aside h2 { font-size: 1rem; font-weight: 700; margin-bottom: 0.3rem; }
aside h3 {
  font-size: 0.75rem;
  font-weight: 650;
  color: var(--ink-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1rem 0 0.4rem;
}

/* ---------- shared atoms ---------- */

.chip {
  display: inline-block;
  min-width: 1.8rem;
  padding: 0.16rem 0.35rem;
  border-radius: 5px;
  font-weight: 700;
  font-size: var(--fs-body);
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.bar { display: flex; height: 1.05rem; border-radius: 4px; overflow: hidden; margin: 0.3rem 0; }
.bar div { height: 100%; }

.note, .barnote, .flagnote, #card .sub {
  font-size: var(--fs-caption);
  color: var(--ink-2);
  line-height: 1.45;
}
.flagnote { color: #a05a00; margin-top: 0.4rem; }
.barnote { margin-top: 0.4rem; }

/* ---------- panel tabs + about pane ---------- */

#panel-tabs { display: flex; gap: 0.4rem; margin-bottom: 1.1rem; grid-column: 1 / -1; }
#panel-tabs button {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: var(--radius);
  padding: 0.4rem 0.2rem;
  font-size: var(--fs-small);
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}
#panel-tabs button:hover { border-color: var(--ink-2); }
#panel-tabs button.on {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

#aboutpane { grid-column: 1 / -1; font-size: var(--fs-small); line-height: 1.55; }
#aboutpane h1 { font-size: 1.05rem; margin-bottom: 0.5rem; }
#aboutpane h2 { font-size: var(--fs-body); font-weight: 700; margin: 1rem 0 0.3rem; }
#aboutpane p { margin: 0.45rem 0; }

/* ---------- intro ---------- */

#intro {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem 0.75rem;
  margin-bottom: 1.1rem;
  font-size: var(--fs-small);
  color: var(--ink-2);
}
#intro summary { cursor: pointer; font-weight: 650; color: var(--ink); }
#intro p { margin: 0.45rem 0 0; }

/* ---------- national panel ---------- */

#headline { font-size: var(--fs-small); color: var(--ink-2); }

#national { container-type: inline-size; }
.statrow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-top: 0.7rem;
}
/* Two tiles abreast need ~10rem each for their labels; below that, stack them. */
@container (max-width: 21rem) {
  .statrow { grid-template-columns: 1fr; }
}
.stat {
  flex: 1;
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5rem 0.55rem;
}
.stat span {
  font-size: 1.2rem;
  font-weight: 650;
  display: block;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
/* Tile anatomy, three levels: bold value, grey subscript, quiet label. */
.stat small {
  display: block;
  font-size: 0.75rem;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  margin-top: 0.08rem;
  min-height: 1em;
}
.stat label {
  font-size: var(--fs-caption);
  color: var(--ink-2);
  line-height: 1.3;
  display: block;
  margin-top: 0.4rem;
}
/* The saving is a gain, the morphological penalty a cost that survives the levers;
 * EPC band hues (A green, G red) keep the semantics in the site's grade language. */
.stat-good { border-color: #19b459; }
.stat-bad { border-color: #e9153b; }

/* ---------- controls ---------- */

#controls h3:first-child { margin-top: 0.15rem; }
#controls label { display: block; font-size: var(--fs-small); margin: 0.45rem 0; }
#controls output { float: right; color: var(--ink-2); font-size: var(--fs-small); font-variant-numeric: tabular-nums; }
#controls input[type="range"] { width: 100%; accent-color: var(--accent); }

.presets, .metrics { display: flex; gap: 0.4rem; margin-top: 0.5rem; }
.presets button, .metrics button {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: var(--radius);
  padding: 0.32rem 0.2rem;
  font-size: var(--fs-caption);
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}
.presets button:hover, .metrics button:hover { border-color: var(--ink-2); }
.metrics button.on, .presets button.on {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}
.metrics button.on:hover, .presets button.on:hover { border-color: var(--accent); }
#viewdesc { margin-top: 0.45rem; min-height: 1em; }
.legendnote { margin-top: 0.25rem; }

#legend { display: flex; gap: 2px; margin-top: 0.6rem; }
#legend span {
  flex: 1;
  text-align: center;
  font-size: var(--fs-caption);
  font-weight: 700;
  padding: 0.18rem 0;
  border-radius: 3px;
}

/* ---------- card ---------- */

#card {
  margin-top: 1.1rem;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.8rem 0.9rem;
}
#card h2 { font-size: var(--fs-body); font-weight: 700; }
#card .sub { margin-bottom: 0.55rem; }

.cardtable { width: 100%; border-collapse: collapse; margin: 0.55rem 0; }
.cardtable th, .cardtable td {
  text-align: center;
  padding: 0.22rem 0.15rem;
  font-size: var(--fs-caption);
  font-weight: 500;
  color: var(--ink-2);
}
.cardtable th:first-child, .cardtable td:first-child {
  text-align: left;
  color: var(--ink);
  font-size: var(--fs-small);
}
.cardtable .locked { font-size: 0.62rem; color: var(--ink-3); display: block; margin-top: 0.1rem; }

.cardtable.numbers td, .cardtable.numbers th { border-bottom: 1px solid var(--line); }
.cardtable.numbers td:not(:first-child), .cardtable.numbers th:not(:first-child) {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  font-size: var(--fs-small);
}
.cardtable.numbers tr:last-child td { border-bottom: none; }
.cardtable.numbers tr.total td { font-weight: 650; }

.kv { font-size: var(--fs-small); line-height: 1.55; font-variant-numeric: tabular-nums; }
.kv b { font-weight: 650; }

/* ---------- about page ---------- */

.prose {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2rem 1.2rem 4rem;
  overflow-y: auto;
}
.prose h1 { font-size: 1.35rem; font-weight: 700; margin-bottom: 0.8rem; }
.prose h2 { font-size: 1rem; font-weight: 700; margin: 1.6rem 0 0.5rem; }
.prose p { margin: 0.7rem 0; }

.sourcetable { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: var(--fs-small); }
.sourcetable th, .sourcetable td {
  text-align: left;
  padding: 0.4rem 0.6rem 0.4rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.sourcetable th { font-weight: 650; color: var(--ink-2); }

/* ---------- responsive ---------- */

@media (max-width: 1450px) {
  aside#panel { grid-template-columns: 1fr; width: 24rem; min-width: 0; }
  #national, #controls, #card { grid-column: 1; }
  aside section + section { margin-top: 1.1rem; }
}

@media (max-width: 760px) {
  main { flex-direction: column; }
  #map { min-height: 46vh; }
  aside#panel { width: 100%; border-left: none; border-top: 1px solid var(--line); }
}