/* ===== Design tokens ===== */
:root {
  --color-text: #1a1a1a;
  --color-text-muted: #555;
  --color-bg: #fafaf8;
  --color-surface: #ffffff;
  --color-border: #d8d8d4;
  --color-accent: #2a5f9e;
  --color-accent-hover: #1e4a7c;
  --color-zone1: rgba(220, 80, 60, 0.25);
  --color-zone2: rgba(240, 160, 40, 0.20);
  --color-zone3: rgba(60, 140, 200, 0.15);
  --font-body: "Georgia", "Times New Roman", serif;
  --font-ui: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Menlo", "Consolas", monospace;
  --max-width: 860px;
  --spacing-xs: 0.4rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1.25rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3.5rem;
}

/* ===== Reset / base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 18px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
}

img, video { max-width: 100%; display: block; }

a { color: var(--color-accent); }
a:hover { color: var(--color-accent-hover); }

h1, h2, h3, h4 {
  font-family: var(--font-ui);
  font-weight: 700;
  line-height: 1.25;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.15rem; }

p { margin-bottom: var(--spacing-md); max-width: 68ch; }

ul, ol { margin-bottom: var(--spacing-md); padding-left: 1.5rem; }
li { margin-bottom: 0.3rem; }

table {
  border-collapse: collapse;
  width: 100%;
  margin-bottom: var(--spacing-md);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}
th, td { border: 1px solid var(--color-border); padding: 0.5rem 0.75rem; text-align: left; }
th { background: #f0f0ed; font-weight: 600; }

hr { border: none; border-top: 1px solid var(--color-border); margin: var(--spacing-xl) 0; }

/* ===== Layout ===== */
.site-header {
  border-bottom: 2px solid var(--color-text);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.site-name {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  color: var(--color-text);
  white-space: nowrap;
}

.nav-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
}
.nav-links a:hover { color: var(--color-accent); }

.page-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-xl);
  background: var(--color-surface);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.footer-meta { margin-top: var(--spacing-xs); }

/* ===== Hero ===== */
.hero {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.hero h1 { margin-top: 0; font-size: 2.2rem; }

.lead {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--color-text);
  max-width: 60ch;
}

.scope-note {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  border-left: 3px solid var(--color-border);
  padding-left: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* ===== Site cards ===== */
.card-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.card a {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--spacing-md);
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.15s;
}
.card a:hover { border-color: var(--color-accent); }
.card strong { display: block; font-family: var(--font-ui); font-size: 1rem; margin-bottom: 0.25rem; }
.card-type { font-size: 0.85rem; color: var(--color-text-muted); font-family: var(--font-ui); }
.card-date { display: block; font-size: 0.8rem; color: var(--color-text-muted); font-family: var(--font-ui); margin-top: 0.2rem; }
.hero-chart { margin-bottom: var(--spacing-xl); }
.hero-stats { margin-bottom: var(--spacing-xl); }
.hero-stats h2 { margin-bottom: var(--spacing-md); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--spacing-md); margin-bottom: var(--spacing-sm); }
.stat-block { background: var(--color-surface); border: 1px solid var(--color-border); border-left: 4px solid var(--color-accent); padding: var(--spacing-md); }
.stat-number { font-size: 2.5rem; font-weight: 700; color: var(--color-accent); line-height: 1; margin-bottom: 0.4rem; font-family: var(--font-ui); }
.stat-label { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.4; }
.stat-note { font-size: 0.9rem; color: var(--color-text-muted); margin-top: var(--spacing-sm); }
.corridor-swatch { background: rgba(42,95,158,0.15); border: 2px solid rgba(42,95,158,0.6); }
.san-pablo-swatch { background: rgba(196,122,0,0.12); border: 2px solid rgba(196,122,0,0.6); }
.control-swatch { background: rgba(136,136,136,0.12); border: 1px dashed #888; }

/* ===== Finding tiles (findings page header) ===== */
.finding-tiles {
  margin: var(--spacing-xl) 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.finding-tile {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.finding-tile:first-child { border-top: 1px solid var(--color-border); }
.finding-tile .cost-number { color: #2a5f9e; }

/* ===== Hidden costs statements ===== */
.hidden-costs {
  margin: var(--spacing-xl) 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cost-statement {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: background 0.12s;
}
.cost-statement:first-child { border-top: 1px solid var(--color-border); }
.cost-statement:hover { color: var(--color-text); }
.cost-statement:hover .cost-headline { color: var(--color-accent-hover); }

.cost-number {
  font-family: var(--font-ui);
  font-size: 2.4rem;
  font-weight: 800;
  color: #c0392b;
  min-width: 3.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.cost-body { flex: 1; }

.cost-headline {
  font-family: var(--font-ui);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 0.3rem;
  transition: color 0.12s;
}

.cost-detail {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.cost-link {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--color-accent);
  white-space: nowrap;
  flex-shrink: 0;
  align-self: center;
}

@media (max-width: 640px) {
  .cost-number { font-size: 1.8rem; min-width: 2.5rem; }
  .cost-headline { font-size: 1.05rem; }
  .cost-link { display: none; }
}

/* ===== Button ===== */
.btn {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1.1rem;
  border-radius: 3px;
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  transition: background 0.15s;
}
.btn:hover { background: var(--color-accent-hover); color: #fff; }
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn-secondary:hover { background: var(--color-accent); color: #fff; }

/* ===== Charts ===== */
.chart-container {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0 var(--spacing-sm);
  min-height: 200px;
  background: var(--color-surface);
}

.chart-loading {
  color: var(--color-text-muted);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

.chart-note {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

/* ===== Maps ===== */
.map-container {
  height: 480px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  margin: var(--spacing-md) 0;
}

.map-small { height: 280px; }

.map-legend {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  margin-bottom: var(--spacing-md);
}
.map-legend h3 { font-size: 0.95rem; margin-top: var(--spacing-sm); }
.map-legend ul { list-style: none; padding: 0; }
.map-legend li { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.3rem; }

.legend-dot { width: 10px; height: 10px; border-radius: 50%; background: #c00; display: inline-block; }
.site-dot { background: #c00; }
.legend-swatch { display: inline-block; width: 18px; height: 14px; border-radius: 2px; }
.zone1-swatch { background: var(--color-zone1); border: 1px solid rgba(220,80,60,0.6); }
.zone2-swatch { background: var(--color-zone2); border: 1px solid rgba(240,160,40,0.6); }
.zone3-swatch { background: var(--color-zone3); border: 1px solid rgba(60,140,200,0.6); }
.legend-line { display: inline-block; width: 22px; height: 2px; background: #444; }

.map-note {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ===== Site profile ===== */
.profile-header { margin-bottom: var(--spacing-lg); }
.program-type { font-family: var(--font-ui); font-size: 1rem; color: var(--color-text-muted); margin-top: 0.25rem; }
.opening-date { font-family: var(--font-ui); font-size: 0.95rem; color: var(--color-text-muted); }

/* ===== Page epigraph ===== */
.page-epigraph {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--color-text);
  max-width: 58ch;
  margin: var(--spacing-lg) 0 var(--spacing-xl);
  padding: var(--spacing-md) 0;
  border-top: 2px solid var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
@media (max-width: 640px) {
  .page-epigraph { font-size: 1.1rem; }
}

/* ===== Key insights ===== */
.pullquote, .key-insight {
  border-left: 4px solid #c0392b;
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  background: #fdf6f5;
}
.pullquote p, .key-insight p {
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  margin: 0;
}
.key-insight::before {
  content: "Key insight";
  display: block;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #c0392b;
  margin-bottom: 0.4rem;
}
@media (max-width: 640px) {
  .pullquote p, .key-insight p { font-size: 0.95rem; }
}

/* ===== Endnotes ===== */
ol.endnotes {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  padding-left: 1.25em;
  line-height: 1.6;
}
ol.endnotes li { margin-bottom: 0.35em; }

/* ===== Build meta ===== */
.build-meta table { max-width: 500px; }

/* ===== Responsive ===== */
@media (max-width: 640px) {
  html { font-size: 17px; }
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.25rem; }
  .nav-inner { gap: var(--spacing-sm); }
  .map-container { height: 320px; }
}