/* =====================================================================
   Energy state-page stylesheet
   Editorial minimal, system fonts, no JS dependencies.
   ===================================================================== */

:root {
  --bg:        #fafaf7;
  --paper:    #ffffff;
  --rule:     #e8e4dc;
  --ink:      #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-mute: #767270;
  --accent:   #0d4f5c;
  --accent-h: #0a3e48;
  --warm:     #5a3a2e;
  --gold:     #a07c2c;
  --bad:      #b04030;
  --good:     #2c7a5a;

  --serif: Charter, "Iowan Old Style", "Source Serif Pro", "Source Serif 4",
           Georgia, "Times New Roman", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica,
           "Helvetica Neue", Arial, sans-serif;
  --mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;

  --measure: 38rem;
  --wide:    62rem;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--accent-h); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
h1 { font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.1; }
h2 { font-size: 1.5rem;  line-height: 1.2; margin-top: 3.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.125rem; line-height: 1.3; margin-top: 2rem;   margin-bottom: 0.5rem; }

p { margin: 0 0 1rem; }
small { color: var(--ink-mute); font-size: 0.85rem; }

/* ---------------------- Layout ---------------------- */
.container {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.prose { max-width: var(--measure); }

/* Site nav: minimal */
.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 1rem 0;
  background: var(--bg);
}
.site-header .container {
  display: flex; align-items: baseline; justify-content: space-between;
}
.site-title {
  font-family: var(--serif); font-weight: 600;
  font-size: 1.125rem; letter-spacing: -0.02em;
  color: var(--ink); text-decoration: none;
}
.site-nav a {
  color: var(--ink-soft); text-decoration: none;
  margin-left: 1.5rem; font-size: 0.95rem;
}
.site-nav a:hover { color: var(--accent); }

/* Breadcrumbs */
.crumbs {
  font-size: 0.85rem; color: var(--ink-mute);
  margin: 1.5rem 0 0; padding: 0;
  list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem;
}
.crumbs li::after { content: "›"; margin-left: 0.4rem; color: var(--rule); }
.crumbs li:last-child::after { content: ""; }
.crumbs a { color: var(--ink-mute); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }

/* ---------------------- Hero ---------------------- */
.hero { padding: 2rem 0 1rem; }
.hero .eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.75rem;
}
.hero h1 { margin-bottom: 1.25rem; }
.hero .lede {
  font-family: var(--serif);
  font-size: 1.25rem; line-height: 1.5;
  color: var(--ink-soft);
  max-width: var(--measure);
}
.hero .lede strong { color: var(--ink); font-weight: 600; }

/* ---------------------- Stat grid ---------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
  margin: 2.5rem 0 0;
  background: var(--paper);
}
.stat {
  padding: 1.25rem 1.25rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.stat-label {
  font-family: var(--mono);
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.5rem;
  display: block;
}
.stat-value {
  font-family: var(--serif);
  font-size: 1.75rem; line-height: 1.1;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  display: block;
}
.stat-sub {
  font-size: 0.8rem; color: var(--ink-mute);
  margin-top: 0.25rem;
  display: block;
}
.stat-sub.up   { color: var(--bad); }
.stat-sub.down { color: var(--good); }

/* ---------------------- Tables ---------------------- */
.tbl-wrap { overflow-x: auto; margin: 1.5rem 0 2rem; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}
table.data th, table.data td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--rule);
}
table.data th {
  font-family: var(--mono);
  font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-mute); font-weight: 500;
  border-bottom: 1px solid var(--ink);
  background: var(--bg);
  position: sticky; top: 0;
}
table.data td.num { text-align: right; }
table.data tr:hover td { background: rgba(13, 79, 92, 0.04); }
table.data tr:last-child td { border-bottom: none; }

.fuel-pip {
  display: inline-block;
  width: 0.6rem; height: 0.6rem;
  border-radius: 50%;
  margin-right: 0.4rem;
  vertical-align: middle;
}
.pip-renewable { background: var(--accent); }
.pip-fossil    { background: var(--warm); }
.pip-nuclear   { background: var(--gold); }
.pip-other     { background: #999; }

.badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  font-size: 0.7rem;
  font-family: var(--mono); letter-spacing: 0.05em; text-transform: uppercase;
  border-radius: 999px;
  background: var(--bg); border: 1px solid var(--rule);
  color: var(--ink-soft);
}
.badge.retired { background: #f5e6e3; color: var(--bad); border-color: #e6c8c2; }

/* ---------------------- Charts ---------------------- */
.chart-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: center;
  margin: 1.5rem 0 2.5rem;
}
@media (max-width: 640px) {
  .chart-row { grid-template-columns: 1fr; }
  .chart-row > svg { margin: 0 auto; display: block; }
}

.chart-donut-center {
  font-family: var(--serif); font-weight: 600;
  font-size: 1.6rem; fill: var(--ink);
  font-variant-numeric: tabular-nums;
}
.chart-donut-sub {
  font-family: var(--mono); font-size: 0.65rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  fill: var(--ink-mute);
}
.chart-spark { display: block; }
.chart-spark-label {
  font-family: var(--mono); font-size: 0.65rem;
  fill: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}
.chart-bar { width: 100%; height: auto; }
.chart-bar-label {
  font-family: var(--mono); font-size: 0.7rem;
  font-weight: 600;
  alignment-baseline: middle;
}

.legend {
  display: flex; flex-wrap: wrap; gap: 0 1.5rem;
  margin: 0.75rem 0 0; padding: 0;
  list-style: none;
  font-size: 0.85rem; color: var(--ink-soft);
}

/* ---------------------- Section frames ---------------------- */
.section { padding: 1rem 0; }
.section h2 + p { color: var(--ink-soft); max-width: var(--measure); }
.section-meta {
  font-family: var(--mono);
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 0.25rem;
}

/* FAQ */
.faq details {
  border-top: 1px solid var(--rule);
  padding: 1.1rem 0;
}
.faq details:last-of-type { border-bottom: 1px solid var(--rule); }
.faq summary {
  cursor: pointer;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  list-style: none;
  position: relative;
  padding-right: 2rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0; top: -0.1rem;
  font-family: var(--sans); font-weight: 300;
  font-size: 1.5rem; color: var(--ink-mute);
  transition: transform 0.15s ease;
}
.faq details[open] summary::after { content: "−"; }
.faq details > p {
  margin-top: 0.75rem;
  color: var(--ink-soft);
  max-width: var(--measure);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: 4rem;
  padding: 2rem 0 3rem;
  font-size: 0.85rem;
  color: var(--ink-mute);
}
.site-footer p { margin: 0 0 0.4rem; }

/* Print */
@media print {
  .site-header, .site-footer, .site-nav { display: none; }
  body { background: white; }
  .stats { box-shadow: none; }
}

/* ---------------------- Live "Right now" section ---------------------- */
.live { padding: 1rem 0 0.5rem; }
.live-head {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 0.5rem;
}
.live-head h2 { margin-top: 2.5rem; }

.live-pulse {
  font-family: var(--mono);
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-mute);
  display: inline-flex; align-items: center; gap: 0.4rem;
  margin-top: 2.5rem;
}
.live-pulse .dot {
  width: 0.55rem; height: 0.55rem; border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 0 rgba(44, 122, 90, 0.55);
  animation: livePulse 2.4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
@keyframes livePulse {
  0%   { box-shadow: 0 0 0 0    rgba(44, 122, 90, 0.55); }
  70%  { box-shadow: 0 0 0 10px rgba(44, 122, 90, 0);    }
  100% { box-shadow: 0 0 0 0    rgba(44, 122, 90, 0);    }
}

.live-source {
  color: var(--ink-soft);
  max-width: var(--measure);
  margin-bottom: 1rem;
}

.live-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0;
  margin: 1rem 0 1.5rem;
  border-top: 1px solid var(--accent);
  border-left: 1px solid var(--rule);
  background: rgba(13, 79, 92, 0.025);
}
.live-stat {
  padding: 1rem 1.1rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.live-stat-label {
  font-family: var(--mono);
  font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.4rem; display: block;
}
.live-stat-value {
  font-family: var(--serif);
  font-size: 1.45rem; line-height: 1.1; font-weight: 600;
  font-variant-numeric: tabular-nums;
  display: block;
}
.live-stat-value.status-good     { color: var(--good); }
.live-stat-value.status-caution  { color: var(--gold); }
.live-stat-value.status-warn     { color: var(--warm); }
.live-stat-value.status-bad      { color: var(--bad); }
.live-stat-sub {
  font-size: 0.78rem; color: var(--ink-mute);
  margin-top: 0.2rem; display: block;
}

.live-spark { margin: 1rem 0 0.5rem; }
.live-spark h3 { margin-bottom: 0.5rem; }
.chart-spark-demand { display: block; max-width: 100%; }

/* ---------------------- Overview stat list ---------------------- */
.overview-stats { margin: 1rem 0 0.5rem; border-top: 1px solid var(--accent); }
.overview-stats .ov-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  padding: 0.7rem 0.25rem; border-bottom: 1px solid var(--rule);
}
.overview-stats dt {
  font-family: var(--mono);
  font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-mute);
}
.overview-stats dd {
  margin: 0; text-align: right;
  font-family: var(--serif); font-weight: 600; font-variant-numeric: tabular-nums;
}
.overview-stats .ov-sub {
  display: block; font-family: var(--sans); font-weight: 400;
  font-size: 0.78rem; color: var(--ink-mute);
}

/* ---------------------- Big rate cards ---------------------- */
.rate-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0; margin: 1rem 0 1.5rem;
  border-top: 1px solid var(--accent); border-left: 1px solid var(--rule);
}
.rate-card {
  padding: 1.4rem 1.1rem; text-align: center;
  border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  background: rgba(13, 79, 92, 0.025);
}
.rate-card-value {
  display: block; font-family: var(--serif); font-weight: 600;
  font-size: 2.4rem; line-height: 1; font-variant-numeric: tabular-nums;
}
.rate-card-label {
  display: block; margin-top: 0.5rem;
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-mute);
}
.rate-card-sub { display: block; margin-top: 0.3rem; font-size: 0.82rem; color: var(--ink-soft); }

/* ---------------------- Fuel makeup bars ---------------------- */
.fuel-makeup { list-style: none; margin: 1rem 0; padding: 0; }
.fuel-makeup-row {
  display: grid; grid-template-columns: 12rem 1fr 4rem; align-items: center;
  gap: 0.75rem; padding: 0.35rem 0;
}
.fuel-makeup-row .fm-label { display: inline-flex; align-items: center; gap: 0.45rem; }
.fm-bar { background: var(--rule); height: 0.7rem; border-radius: 2px; overflow: hidden; }
.fm-bar-fill { display: block; height: 100%; }
.fm-renewable { background: var(--accent); }
.fm-nuclear   { background: var(--gold); }
.fm-fossil    { background: var(--warm); }
.fm-other     { background: #999999; }
.fm-pct { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--serif); }
@media (max-width: 540px) {
  .fuel-makeup-row { grid-template-columns: 1fr 3.2rem; }
  .fuel-makeup-row .fm-bar { display: none; }
}

/* ---------------------- Data centers & crypto ---------------------- */
.dc-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0; margin: 1rem 0 1.25rem;
  border-top: 1px solid var(--gold); border-left: 1px solid var(--rule);
}
.dc-card {
  position: relative; padding: 1.3rem 1.1rem;
  border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  background: rgba(160, 124, 44, 0.04);
}
.dc-badge {
  position: absolute; top: 0.6rem; right: 0.6rem;
  font-family: var(--mono); font-size: 0.55rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: #fff; background: var(--gold);
  padding: 0.12rem 0.4rem; border-radius: 2px;
}
.dc-card-value {
  display: block; font-family: var(--serif); font-weight: 600;
  font-size: 1.7rem; line-height: 1.1; font-variant-numeric: tabular-nums;
}
.dc-card-label {
  display: block; margin-top: 0.45rem;
  font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--ink-mute);
}
.dc-card-sub { display: block; margin-top: 0.25rem; font-size: 0.8rem; color: var(--ink-soft); }
.dc-note { color: var(--ink-soft); max-width: var(--measure); font-size: 0.92rem; }

/* ---------------------- Quick facts ---------------------- */
.quick-facts { margin: 1rem 0; padding-left: 1.1rem; max-width: var(--measure); }
.quick-facts li { margin-bottom: 0.6rem; color: var(--ink-soft); }

/* ---------------------- Plant map ---------------------- */
.chart-map { display: block; width: 100%; max-width: 100%; margin: 1rem 0 0.5rem; border-radius: 2px; }
.chart-map-coord { font-family: var(--mono); font-size: 0.6rem; fill: var(--ink-mute); }
.chart-map-locator { display: block; width: 100%; max-width: 480px; margin: 0.5rem 0; border-radius: 2px; }

/* ---------------------- Table of contents (left nav) ---------------------- */
html { scroll-behavior: smooth; }
.has-toc { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 2.5rem; align-items: start; }
.page-body { min-width: 0; }
.page-body > .hero:first-child,
.page-body > .crumbs:first-child { margin-top: 0; }
section[id] { scroll-margin-top: 1rem; }

.toc { position: sticky; top: 1rem; align-self: start; font-size: 0.85rem; }
.toc-title {
  font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-mute); margin-bottom: 0.5rem;
}
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--rule); }
.toc li { margin: 0; }
.toc a {
  display: block; padding: 0.3rem 0.75rem; margin-left: -1px; line-height: 1.3;
  color: var(--ink-soft); text-decoration: none; border-left: 2px solid transparent;
}
.toc a:hover { color: var(--accent); border-left-color: var(--accent); }

@media (max-width: 900px) {
  .has-toc { grid-template-columns: 1fr; gap: 0; }
  .toc {
    position: static; top: auto; margin: 0 -1.25rem 1.25rem; padding: 0 1.25rem;
    overflow-x: auto; -webkit-overflow-scrolling: touch; border-bottom: 1px solid var(--rule);
  }
  .toc-title { display: none; }
  .toc ul { display: flex; gap: 0.25rem; border-left: 0; white-space: nowrap; padding-bottom: 0.4rem; }
  .toc a { border-left: 0; border-bottom: 2px solid transparent; padding: 0.4rem 0.6rem; }
  .toc a:hover { border-left: 0; border-bottom-color: var(--accent); }
}