@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders+Display:wght@700&family=Courier+Prime:ital@0;1&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  background-color: #f4ecd8;
  color: #1c1828;
  font-family: 'Courier Prime', Courier, monospace;
  margin: 0;
  padding: 0;
}

/* ── Page layout ── */

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 2.5rem 6rem;
}

.page-home {
  display: block;
  font-size: 0.8rem;
  color: #5a3a18;
  text-decoration: none;
  margin-bottom: 2rem;
}

.page-home:hover {
  color: #0f2040;
  text-decoration: underline;
}

h1 {
  font-family: 'Big Shoulders Display', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: #0f2040;
  margin: 0 0 1rem;
  line-height: 1.1;
}

.explainer {
  font-size: 0.88rem;
  line-height: 1.6;
  color: #3a2a10;
  max-width: 680px;
  margin-bottom: 2.5rem;
}

/* ── Tab bar ── */

.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 2px solid rgba(0, 0, 0, 0.15);
  margin-bottom: 2rem;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  padding: 0.5rem 1.2rem;
  font-family: 'Courier Prime', Courier, monospace;
  font-size: 0.85rem;
  font-weight: 700;
  color: #5a3a18;
  cursor: pointer;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tab-btn:hover {
  color: #0f2040;
}

.tab-btn[aria-selected="true"] {
  color: #0f2040;
  border-bottom-color: #0f2040;
}

/* ── Era filter ── */

.era-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.era-label {
  font-size: 0.78rem;
  color: #5a3a18;
  margin-right: 0.25rem;
}

.era-btn {
  background: none;
  border: 1px solid rgba(0, 0, 0, 0.2);
  padding: 0.25rem 0.7rem;
  font-family: 'Courier Prime', Courier, monospace;
  font-size: 0.78rem;
  color: #3a2a10;
  cursor: pointer;
}

.era-btn:hover {
  background: #ede4cc;
}

.era-btn.active {
  background: #0f2040;
  color: #f4ecd8;
  border-color: #0f2040;
}

/* ── Download button ── */

.download-btn {
  display: inline-block;
  background: none;
  border: 1px solid rgba(0, 0, 0, 0.2);
  padding: 0.3rem 0.8rem;
  font-family: 'Courier Prime', Courier, monospace;
  font-size: 0.75rem;
  color: #5a3a18;
  cursor: pointer;
  text-decoration: none;
  margin-left: auto;
}

.download-btn:hover {
  background: #ede4cc;
  color: #0f2040;
}

.era-bar .download-btn {
  margin-left: auto;
}

/* ── Table ── */

.table-wrap {
  overflow-x: auto;
  margin-bottom: 2rem;
  border: 1px solid rgba(0, 0, 0, 0.12);
}

.data-table {
  border-collapse: separate;
  border-spacing: 0;
  width: max-content;
  min-width: 100%;
  font-size: 0.78rem;
  line-height: 1.45;
}

.data-table th,
.data-table td {
  padding: 0.4rem 0.65rem;
  text-align: left;
  vertical-align: top;
  white-space: pre-line;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  border-right: 1px solid rgba(0, 0, 0, 0.06);
  min-width: 80px;
  max-width: 220px;
}

/* Narrow columns that don't need much space */
.data-table td:nth-child(1) { max-width: 140px; }  /* Use District */
.data-table td:nth-child(2) { max-width: 120px; }  /* Density District */

/* Wider columns with long regulatory text */
.data-table td:nth-child(3),                         /* Volume */
.data-table td:nth-child(6),                         /* MLA/unit */
.data-table td:nth-child(12) {                       /* Parking */
  max-width: 260px;
}

.data-table th {
  background: #ede4cc;
  font-weight: 700;
  color: #0f2040;
  position: sticky;
  z-index: 1;
  white-space: nowrap;
}

/* Category row (first header row) */
.data-table .cat-row th {
  top: 0;
  border-bottom: none;
  padding-top: 0.25rem;
  padding-bottom: 0.1rem;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #5a3a18;
  font-weight: 400;
}

.data-table .cat-row .cat-group {
  background: #e8dfca;
}

.data-table .cat-row .cat-start {
  border-left: 1px solid rgba(0, 0, 0, 0.12);
}

.data-table .cat-row .cat-end {
  border-right: 1px solid rgba(0, 0, 0, 0.12);
}

/* Column header row (second header row) */
.data-table thead tr:nth-child(2) th {
  top: 1.35rem;
}

/* Sticky first two columns */
.data-table th:nth-child(1),
.data-table td:nth-child(1) {
  position: sticky;
  left: 0;
  z-index: 2;
  background: #f4ecd8;
  min-width: 60px;
}

.data-table th:nth-child(2),
.data-table td:nth-child(2) {
  position: sticky;
  left: 60px;
  z-index: 2;
  background: #f4ecd8;
  min-width: 120px;
  border-right: 2px solid rgba(0, 0, 0, 0.15);
}

/* Corner cells: sticky both ways */
.data-table th:nth-child(1),
.data-table th:nth-child(2) {
  z-index: 4;
  background: #ede4cc;
}

/* Header sticky column 2 */
.data-table th:nth-child(2) {
  left: 60px;
  border-right: 2px solid rgba(0, 0, 0, 0.15);
}

.data-table td:nth-child(1) {
  font-weight: 700;
  color: #3a2a10;
}

.data-table tbody tr:hover td {
  background-color: #ede4cc;
}

/* Override sticky column background on hover */
.data-table tbody tr:hover td:nth-child(1),
.data-table tbody tr:hover td:nth-child(2) {
  background-color: #e5dcc4;
}

/* ── Tab panels ── */

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ── Source cards ── */

.source-list {
  display: grid;
  gap: 1rem;
}

.source-card {
  border: 1px solid rgba(0, 0, 0, 0.12);
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.25);
}

.source-year {
  font-family: 'Big Shoulders Display', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: #0f2040;
  margin: 0 0 0.25rem;
}

.source-desc {
  font-size: 0.78rem;
  color: #3a2a10;
  margin: 0 0 0.6rem;
  line-height: 1.5;
}

.source-link {
  font-size: 0.75rem;
  color: #1a4a7a;
  text-decoration: none;
}

.source-link:hover {
  color: #0f2040;
  text-decoration: underline;
}

.source-unavailable {
  font-size: 0.75rem;
  font-style: italic;
  color: #8a7a60;
}

/* ── Mobile ── */

@media (max-width: 600px) {
  main {
    padding: 2rem 1rem 4rem;
  }

  h1 {
    font-size: 1.6rem;
    margin-bottom: 0.75rem;
  }

  .explainer {
    font-size: 0.82rem;
  }

  .era-bar {
    gap: 0.35rem;
  }

  .tab-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.78rem;
  }

  .data-table th:nth-child(2),
  .data-table td:nth-child(2) {
    left: 50px;
    min-width: 100px;
  }

  .data-table th:nth-child(1),
  .data-table td:nth-child(1) {
    min-width: 50px;
  }
}