/* Colour tokens. Status colours are the first three validated categorical slots
   (blue, orange, aqua), stepped separately for light and dark surfaces. */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f1f0ec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --link: #1c5cab;
  --focus: #2a78d6;
  --accent: #eb6834;
  --st-announced: #2a78d6;
  --st-construction: #eb6834;
  --st-operating: #1baf7a;
  --st-stopped: #898781;
  --sea: #e8edf1;
  --land: #fcfcfb;
  --land-line: #c9c7bf;
  --state-line: #e1e0d9;
  --shadow: 0 1px 2px rgba(11, 11, 11, 0.04), 0 4px 16px rgba(11, 11, 11, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #242422;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --link: #86b6ef;
    --focus: #3987e5;
    --accent: #d95926;
    --st-announced: #3987e5;
    --st-construction: #d95926;
    --st-operating: #199e70;
    --st-stopped: #6f6e69;
    --sea: #111111;
    --land: #232321;
    --land-line: #3d3d3a;
    --state-line: #30302e;
    --shadow: none;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #242422;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.1);
  --link: #86b6ef;
  --focus: #3987e5;
  --accent: #d95926;
  --st-announced: #3987e5;
  --st-construction: #d95926;
  --st-operating: #199e70;
  --st-stopped: #6f6e69;
  --sea: #111111;
  --land: #232321;
  --land-line: #3d3d3a;
  --state-line: #30302e;
  --shadow: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(28px, 4.5vw, 40px); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 17px; font-weight: 650; }
h3 { font-size: 14px; font-weight: 650; margin-top: 18px; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 24px; } }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-row { display: flex; align-items: center; gap: 16px; height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; white-space: nowrap; }
.brand svg { width: 26px; height: 26px; flex: none; }
.brand rect { fill: var(--accent); }
.brand path { fill: #fff; }
.site-header nav { display: flex; gap: 4px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.site-header nav a { color: var(--ink-2); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: 14px; white-space: nowrap; }
.site-header nav a:hover { background: var(--surface-2); color: var(--ink); }
@media (max-width: 720px) { .site-header nav { display: none; } .icon-btn { margin-left: auto; } }

.icon-btn {
  display: grid; place-items: center; width: 36px; height: 36px; flex: none;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--ink-2); cursor: pointer;
}
.icon-btn svg { width: 18px; height: 18px; fill: currentColor; }
.icon-btn:hover { color: var(--ink); }

/* Intro */
.intro { padding: 40px 0 20px; max-width: 760px; }
.lede { font-size: clamp(16px, 2vw, 19px); color: var(--ink-2); margin: 12px 0 8px; }
.meta { color: var(--ink-2); font-size: 13px; margin: 0; }

/* Stat tiles */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 8px 0 20px; }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow); }
.stat-label { font-size: 13px; color: var(--ink-2); }
.stat-value { font-size: clamp(26px, 3.4vw, 34px); font-weight: 650; letter-spacing: -0.02em; margin: 2px 0; }
.stat-value small { font-size: 0.5em; font-weight: 600; color: var(--ink-2); margin-left: 4px; letter-spacing: 0; }
.stat-sub { font-size: 13px; color: var(--ink-2); }

/* Filters */
.filters {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  padding: 14px 16px; margin-bottom: 20px; box-shadow: var(--shadow);
}
.field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--ink-2); min-width: 150px; }
.field.grow { flex: 1 1 220px; }
.field input, .field select {
  font: inherit; font-size: 14px; color: var(--ink); background: var(--page);
  border: 1px solid var(--border); border-radius: 9px; padding: 8px 10px; min-height: 38px; width: 100%;
}
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; min-height: 38px; cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--focus); }
.filter-summary { display: flex; align-items: center; gap: 12px; margin-left: auto; min-height: 38px; font-size: 13px; color: var(--ink-2); }
@media (max-width: 720px) { .field { flex: 1 1 100%; } .filter-summary { margin-left: 0; } }

.link-btn { font: inherit; font-size: 13px; color: var(--link); background: none; border: 0; padding: 4px 0; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.btn {
  font: inherit; font-size: 13px; font-weight: 550; color: var(--ink); background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 9px; padding: 6px 12px; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--axis); }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 18px; margin-bottom: 20px; box-shadow: var(--shadow); min-width: 0; }
@media (min-width: 720px) { .card { padding: 20px 22px; } }
.card-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; margin-bottom: 10px; }
.sub { color: var(--ink-2); font-size: 13px; margin: -2px 0 14px; max-width: 70ch; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-2 > .card { margin-bottom: 20px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; gap: 0; } }

/* Legend */
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12.5px; color: var(--ink-2); }
.key { display: inline-flex; align-items: center; gap: 6px; }
.key i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

/* Map */
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.chips button {
  font: inherit; font-size: 13px; color: var(--ink-2); background: transparent;
  border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; cursor: pointer;
}
.chips button[aria-pressed="true"] { background: var(--ink); color: var(--surface); border-color: var(--ink); }
#map { height: 520px; border-radius: 12px; border: 1px solid var(--border); background: var(--sea); z-index: 0; }
@media (max-width: 720px) { #map { height: 380px; } }
.map-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 12px; }
.size-key { display: flex; align-items: flex-end; gap: 14px; font-size: 12px; color: var(--ink-2); }
.size-key span { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.size-key svg { overflow: visible; }
.size-key circle { fill: none; stroke: var(--ink-2); stroke-width: 1.5; }
.hint { font-size: 13px; color: var(--ink-2); margin: 0; flex: 1 1 280px; }

/* Leaflet theming */
.leaflet-container { font: inherit; background: var(--sea); }
.leaflet-popup-content-wrapper, .leaflet-popup-tip { background: var(--surface); color: var(--ink); box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18); }
.leaflet-popup-content-wrapper { border-radius: 12px; border: 1px solid var(--border); }
.leaflet-popup-content { margin: 14px 16px; font-size: 13px; line-height: 1.45; max-height: 360px; overflow-y: auto; }
.leaflet-container a.leaflet-popup-close-button { color: var(--ink-2); }
.leaflet-tooltip { background: var(--surface); color: var(--ink); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15); font-size: 12.5px; padding: 6px 9px; }
.leaflet-tooltip-top::before { border-top-color: var(--surface); }
.leaflet-bar a { background: var(--surface); color: var(--ink); border-bottom-color: var(--border); }
.leaflet-bar a:hover { background: var(--surface-2); }
.leaflet-control-attribution { background: color-mix(in srgb, var(--surface) 85%, transparent) !important; color: var(--ink-2); }
.leaflet-control-attribution a { color: var(--link); }

/* Project details (popup and table) */
.detail h3 { margin: 0 0 6px; font-size: 15px; }
.detail dl { display: grid; grid-template-columns: max-content 1fr; gap: 3px 14px; margin: 8px 0; }
.detail dt { color: var(--ink-2); }
.detail dd { margin: 0; }
.detail p { margin: 8px 0; }
.detail .sources { margin: 6px 0 0; padding-left: 18px; }
.detail .sources li { margin: 2px 0; }
.detail .src-meta { color: var(--ink-2); }
.detail .checked { color: var(--ink-2); font-size: 12px; margin-top: 8px; }
.detail .actions { display: flex; gap: 14px; margin-top: 8px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
@media (max-width: 720px) { .detail-grid { grid-template-columns: 1fr; } }

.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; white-space: nowrap; }
.badge i { width: 9px; height: 9px; border-radius: 50%; flex: none; }

/* Stacked bars */
.bars { display: flex; flex-direction: column; gap: 10px; }
.bar-row { display: grid; grid-template-columns: 116px 1fr 64px; align-items: center; gap: 10px; font-size: 13px; }
.bar-label { color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { position: relative; height: 16px; border-left: 1px solid var(--axis); }
.bar { display: flex; gap: 2px; height: 100%; min-width: 3px; }
.seg { height: 100%; min-width: 2px; cursor: default; }
.seg:last-child { border-radius: 0 4px 4px 0; }
.seg:hover, .seg:focus-visible { filter: brightness(1.12); }
.bar-value { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); white-space: nowrap; }
.empty { color: var(--ink-2); font-size: 13px; padding: 12px 0; }

/* Table */
.downloads { display: flex; gap: 8px; }
.table-scroll { overflow-x: auto; margin: 0 -4px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; font-weight: 600; color: var(--ink-2); font-size: 12.5px; border-bottom: 1px solid var(--axis); padding: 0; white-space: nowrap; }
th button { font: inherit; color: inherit; background: none; border: 0; padding: 8px 10px; cursor: pointer; width: 100%; text-align: inherit; }
th button:hover { color: var(--ink); }
th[aria-sort] button { color: var(--ink); }
th .arrow { display: inline-block; width: 10px; margin-left: 4px; }
th.num, td.num { text-align: right; }
td { padding: 10px; border-bottom: 1px solid var(--grid); vertical-align: top; }
tbody tr.row { cursor: pointer; }
tbody tr.row:hover td, tbody tr.row.open td { background: var(--surface-2); }
tbody tr.row.open td { border-bottom-color: transparent; }
tr.detail-row td { background: var(--surface-2); padding: 4px 14px 16px; }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.cell-name { font-weight: 600; }
.cell-sub { color: var(--ink-2); font-size: 12.5px; }
.toggle { color: var(--ink-2); display: inline-block; width: 12px; transition: transform 0.15s; }
tr.open .toggle { transform: rotate(90deg); }
@media (max-width: 720px) { .hide-sm { display: none; } }

/* Changelog */
.changes { list-style: none; margin: 0; padding: 0; }
.changes li { display: grid; grid-template-columns: 88px 1fr; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--grid); font-size: 13.5px; }
.changes li:last-child { border-bottom: 0; }
.changes time { color: var(--ink-2); font-variant-numeric: tabular-nums; font-size: 12.5px; padding-top: 1px; }
.change-type { font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-2); margin-right: 6px; }

/* About */
.prose p, .prose li { color: var(--ink-2); font-size: 14px; }
.prose p { margin: 8px 0; }
.prose ul { padding-left: 18px; margin: 8px 0; }
.prose li { margin: 6px 0; }
.prose strong { color: var(--ink); }

/* Tooltip for charts */
.tip {
  position: fixed; z-index: 2000; pointer-events: none; max-width: 260px;
  background: var(--surface); color: var(--ink); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15); font-size: 12.5px; padding: 6px 9px;
}
.tip strong { display: block; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 20px 0 32px; color: var(--ink-2); font-size: 12.5px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 6px 20px; }

@media (forced-colors: active) {
  .seg, .key i, .badge i { forced-color-adjust: none; border: 1px solid CanvasText; }
}