/* ==========================================================================
   PJM Build Ledger — Employ America
   Brand tokens follow the Employ America Brand Guidelines 2025, as used on
   50 States of Electricity: Lato Bold headers, Montserrat subheads, Lato body,
   Warm White surface under a Blue masthead.
   Technology colours reuse that site's energy-source hues.
   ========================================================================== */

:root {
  --warm-white: #f9f7f5;
  --white: #ffffff;
  --light-blue: #dfe7e9;
  --deep-blue: #191e3a;
  --blue: #104591;
  --bright-blue: #007bea;

  --bg: var(--warm-white);
  --surface: var(--white);
  --surface-sunk: #f2f0ed;
  --ink: #1c1c1c;
  --ink-strong: var(--deep-blue);
  --ink-muted: #5c6070;
  --ink-faint: #8b8f9c;
  --rule: #e0ddd8;
  --rule-strong: #c9c5bf;
  --link: #0b62b8;
  --accent: #d2660b;
  --headline-accent-legible: #a37d10;
  --shadow: 0 1px 2px rgba(25, 30, 58, .06), 0 8px 24px -12px rgba(25, 30, 58, .14);

  --tech-gas-cc: #ff591f;
  --tech-gas-peak: #633e1d;
  --tech-solar: #f0c630;
  --tech-wind: #42b1fc;
  --tech-storage: #8a2b9c;
  --tech-other: #5c6069;
  /* fuel colours for the treemap, as on 50 States of Electricity */
  --fuel-gas: #ff591f;
  --fuel-solar: #f0c630;
  --fuel-wind: #42b1fc;
  --fuel-hydro: #3064b5;
  --fuel-petroleum: #633e1d;
  --fuel-biomass: #358452;
  --fuel-coal: #b32d32;
  --fuel-nuclear: #9b3aad;
  --fuel-storage: #8a2b9c;
  --fuel-other: #5c6069;
  --cohort-old: #191e3a;
  --cohort-new: #9cc8f2;

  --font-head: "Lato", "Helvetica Neue", Arial, sans-serif;
  --font-sub: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Lato", "Helvetica Neue", Arial, sans-serif;
  --maxw: 1240px;
  --radius: 6px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 16px/1.55 var(--font-body); -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-underline-offset: 2px; }
:focus-visible { outline: 2px solid var(--bright-blue); outline-offset: 2px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: max(24px, env(safe-area-inset-left, 0px)); padding-right: max(24px, env(safe-area-inset-right, 0px)); }

/* ---------- masthead ---------- */
.masthead { background: var(--blue); color: var(--warm-white); }
.masthead__bar { max-width: var(--maxw); margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 16px; }
.logo { display: flex; align-items: center; text-decoration: none; color: inherit; }
.logo__lockup { display: block; height: 40px; width: auto; flex: none; }
.masthead__spacer { flex: 1; }
.masthead__meta { font: 400 12px/1.3 var(--font-body); color: #b9c0d6; text-align: right; letter-spacing: .02em; }
.masthead :focus-visible { outline-color: var(--warm-white); }
.sitenav { display: flex; align-items: center; gap: 4px; margin-left: 28px; }
.sitenav a {
  display: inline-flex; align-items: center; padding: 8px 15px; border-radius: 999px;
  font: 600 13.5px/1.2 var(--font-sub); letter-spacing: .01em;
  color: #e4e8f2; text-decoration: none; white-space: nowrap;
}
.sitenav a:hover { background: rgba(249, 247, 245, .13); color: var(--warm-white); }
.sitenav a[aria-current="page"] { background: var(--warm-white); color: var(--blue); }

/* ---------- fuel treemap ---------- */
.field { display: grid; gap: 4px; flex: none; }
.field__label { font: 600 11px var(--font-sub); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-muted); }
.tm-legend { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--ink-muted); }
.tm-legend li { display: inline-flex; align-items: center; gap: 6px; }
.tm-legend i { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.tm-legend b { color: var(--ink-strong); font-variant-numeric: tabular-nums; }
.tm { position: relative; min-height: 420px; }
.tm svg { display: block; width: 100%; }
.tm .tile-plant { cursor: pointer; }
.tm .tile-plant:hover, .tm .tile-plant.hot { stroke: var(--ink-strong); stroke-width: 1.5; }
.tm text { font-family: var(--font-body); pointer-events: none; font-variant-numeric: tabular-nums; }
.tm .lbl-fuel { font: 700 15px var(--font-sub); }
.tm .lbl-fuel-v { font: 400 12.5px var(--font-body); }
.tm .lbl-plant { font: 400 11px var(--font-body); }
.tm .halo { paint-order: stroke; stroke-width: 3px; stroke-linejoin: round; }

/* ---------- plant map ---------- */
.plantmap { position: relative; z-index: 0; height: 560px; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface-sunk); }
.plantmap--failed { display: flex; align-items: center; justify-content: center; text-align: center; height: auto; min-height: 120px; padding: 24px; color: var(--ink-muted); font-size: 14px; }
.plantmap .leaflet-tile-pane { filter: grayscale(1) contrast(.82) brightness(1.08); opacity: .75; }
.plantmap .leaflet-control-attribution { font: 400 11px/1.4 var(--font-body); }
.plantmap .leaflet-control-zoom a { color: var(--ink-strong); }
.leaflet-popup-content-wrapper { border-radius: var(--radius); }
.leaflet-popup-content { margin: 12px 14px; font: 400 13px/1.45 var(--font-body); color: var(--ink); min-width: 250px; }
.pop { display: grid; gap: 6px; }
.pop__name { font: 700 15px/1.25 var(--font-sub); color: var(--ink-strong); }
.pop__meta { color: var(--ink-muted); }
.pop__row { display: grid; grid-template-columns: 6.5rem 1fr; gap: 8px; }
.pop__row span:first-child { color: var(--ink-muted); }
.pop__flag { color: var(--accent); font-weight: 700; }
.pop__spark { display: block; width: 100%; height: auto; }
.pop__spark text { font: 400 9.5px var(--font-body); fill: var(--ink-muted); }
.pop button { justify-self: start; font: 600 12px var(--font-sub); color: var(--link); background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }

/* ---------- title block ---------- */
.hero { padding-top: 40px; padding-bottom: 4px; }
.hero__display {
  font: 700 clamp(40px, 8vw, 96px)/0.9 var(--font-head);
  letter-spacing: -.028em; text-transform: uppercase; color: var(--ink-strong); margin: 0 0 16px;
  text-wrap: balance;
}
.hero__display em { font-style: normal; color: var(--headline-accent-legible); }
.hero__lede { font-size: 18px; line-height: 1.55; color: var(--ink-muted); max-width: 66ch; margin: 0; }
.hero__lede b { color: var(--ink-strong); font-weight: 700; font-variant-numeric: tabular-nums; }
.hero__rule { border: 0; border-top: 3px solid var(--ink-strong); margin: 28px 0 28px; }

main .wrap { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; }
main .wrap.hero { display: block; }

/* ---------- headline tiles ---------- */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr)); gap: 12px; }
.tile { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px 18px; display: grid; gap: 6px; align-content: start; }
.tile__k { font: 600 11.5px/1.3 var(--font-sub); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-muted); }
.tile__n { font: 700 32px/1.05 var(--font-head); color: var(--ink-strong); font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.tile__n small { font: 600 14px var(--font-sub); color: var(--ink-muted); margin-left: 4px; letter-spacing: 0; }

/* ---------- cards ---------- */
.card { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px 22px 20px; display: grid; gap: 14px; min-width: 0; align-content: start; }
.card__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: start; gap: 12px 24px; }
.card__intro { display: grid; gap: 4px; min-width: 0; flex: 1 1 22rem; }
.card__title { font: 700 20px/1.25 var(--font-sub); color: var(--ink-strong); margin: 0; text-wrap: balance; }
.card__sub { margin: 4px 0 0; font-size: 14.5px; color: var(--ink-muted); max-width: 78ch; }
.card__note { margin: 0; font-size: 13.5px; color: var(--ink-muted); max-width: 90ch; }
.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 460px), 1fr)); gap: 24px; }

.toggle { display: inline-flex; border: 1px solid var(--rule-strong); border-radius: var(--radius); overflow: hidden; flex: none; }
.toggle button { font: 600 13px var(--font-sub); padding: 7px 14px; background: var(--surface); color: var(--ink-muted); border: 0; cursor: pointer; }
.toggle button + button { border-left: 1px solid var(--rule-strong); }
.toggle button[aria-pressed="true"] { background: var(--blue); color: var(--warm-white); }

.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--ink-muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }

.chart { position: relative; min-height: 340px; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart svg text { fill: var(--ink-muted); font: 400 12px var(--font-body); font-variant-numeric: tabular-nums; }
.chart svg text.total { fill: var(--ink-strong); font-weight: 700; }
.tip { position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--rule-strong); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px 10px; font-size: 12.5px; display: grid; gap: 2px; min-width: 12rem; z-index: 2; }
.tip__h { color: var(--ink-muted); font-weight: 700; margin-bottom: 2px; }
.tip__r { display: flex; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; }
.tip__r i { width: 10px; height: 10px; border-radius: 2px; flex: none; }
.tip__r b { margin-left: auto; padding-left: 12px; font-weight: 700; }
.tip__r--total { border-top: 1px solid var(--rule); margin-top: 3px; padding-top: 3px; }

/* ---------- controls ---------- */
.tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.ctl { font: 400 14px var(--font-body); padding: 7px 10px; border: 1px solid var(--rule-strong); border-radius: var(--radius); background: var(--surface); color: var(--ink); min-width: 0; }
.ctl--grow { flex: 1 1 16rem; }
.chip { font: 600 13px var(--font-sub); border: 1px solid var(--blue); color: var(--blue); background: var(--surface); border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.count { font-size: 13px; color: var(--ink-muted); font-variant-numeric: tabular-nums; margin-left: auto; }

/* ---------- tables ---------- */
.scroll { overflow: auto; max-height: 36rem; border: 1px solid var(--rule); border-radius: var(--radius); }
.scroll--short { max-height: 26rem; }
.t { border-collapse: collapse; width: 100%; font-size: 13.5px; font-variant-numeric: tabular-nums; }
.t th, .t td { padding: 7px 10px; text-align: left; border-bottom: 1px solid var(--rule); white-space: nowrap; }
.t th { position: sticky; top: 0; background: var(--surface-sunk); z-index: 1; font: 600 12px var(--font-sub); color: var(--ink-muted); letter-spacing: .02em; }
.t .num { text-align: right; }
.t td.wrap-cell { white-space: normal; min-width: 11rem; max-width: 18rem; }
.t tbody tr { cursor: pointer; }
.t tbody tr:hover td, .t tbody tr.on td { background: #eef3f8; }
.t--plants td.yr-empty { color: var(--ink-faint); }
.sort { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; text-align: inherit; }
.sort[aria-sort="ascending"]::after { content: " ▲"; font-size: 9px; }
.sort[aria-sort="descending"]::after { content: " ▼"; font-size: 9px; }

.detail { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 10px 24px; font-size: 13.5px; background: var(--surface-sunk); border-radius: var(--radius); padding: 14px 16px; }
.detail > div { display: grid; gap: 2px; min-width: 0; }
.detail .k { font: 600 11px var(--font-sub); letter-spacing: .05em; text-transform: uppercase; color: var(--ink-muted); }
.detail .v { overflow-wrap: anywhere; }

.method { margin: 0; padding-left: 1.25rem; display: grid; gap: 6px; font-size: 14.5px; color: var(--ink-muted); max-width: 92ch; }

.foot { margin-top: 48px; padding-block: 28px 40px; border-top: 1px solid var(--rule); color: var(--ink-muted); font-size: 13px; }
.foot__inner { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
.foot__inner p { margin: 0; max-width: 70ch; }
.logo__lockup--foot { height: 30px; }

.loading { color: var(--ink-faint); }

@media (max-width: 860px) { .plantmap { height: 440px; } }
@media (max-width: 560px) {
  .masthead__bar { padding: 12px 16px; flex-wrap: wrap; row-gap: 10px; }
  .masthead__meta { display: none; }
  .sitenav { margin-left: -8px; flex: 1 1 100%; overflow-x: auto; }
  .sitenav a { padding: 7px 12px; font-size: 13px; }
  .logo__lockup { height: 32px; }
  .wrap { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
  .hero { padding-top: 26px; }
  .hero__lede { font-size: 16px; }
  .card { padding: 16px 14px; }
  .tile__n { font-size: 26px; }
  .count { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}