/* yieldcartography.com — shared site styles */

:root {
  --ink: #1a1a1a;
  --ink-soft: #3a3a3a;
  --muted: #6a6a6a;
  --rule: #d8d8d8;
  --bg: #fafafa;
  --panel: #ffffff;
  --accent: #1f4e79;
  --accent-soft: #2e75b6;
  --accent-tint: #e8f0f7;
  --salmon: #c2522d;
  --green: #2e7d32;
  --mono: 'JetBrains Mono', 'Fira Code', 'Source Code Pro', Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { font-size: 15px; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.15s; }
a:hover { border-bottom-color: var(--accent); }

/* Header */
.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--rule);
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .logo-link { display: flex; align-items: center; border: none; }
.site-header .logo-link img { height: 132px; width: auto; }
.site-header nav { display: flex; gap: 24px; align-items: center; }
.site-header nav a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.3px;
  color: var(--ink-soft);
  border-bottom: none;
  padding: 6px 0;
  position: relative;
}
.site-header nav a:hover { color: var(--accent); }
.site-header nav a.active { color: var(--accent); }
.site-header nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px; background: var(--accent);
}

/* Main content */
main { max-width: 1180px; margin: 0 auto; padding: 32px; }
main.narrow { max-width: 880px; }

/* Hero (homepage) */
.hero {
  padding: 60px 0 40px 0;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 40px;
}
.hero h1 {
  font-size: 38px;
  line-height: 1.15;
  margin: 0 0 16px 0;
  letter-spacing: -0.5px;
  color: var(--ink);
}
.hero h1 .accent { color: var(--accent); }
.hero p.lede {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0 0 20px 0;
}
.hero p.tagline {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.4px;
}

/* Cards grid (homepage navigation) */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin: 30px 0; }
.card {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 22px 24px;
  transition: border-color 0.2s, transform 0.2s;
  display: block;
  border-bottom: 1px solid var(--rule);
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.card .card-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.card h3 {
  font-size: 18px;
  margin: 0 0 8px 0;
  color: var(--ink);
}
.card p {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
  line-height: 1.5;
}

/* Section blocks */
.section { margin: 40px 0; }
.section h2 {
  font-size: 22px;
  margin: 0 0 16px 0;
  color: var(--ink);
  letter-spacing: -0.3px;
}
.section h2.with-rule {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--accent);
}
.section p { color: var(--ink-soft); max-width: 760px; }

/* Dashboard (curves, term-premia) */
.stats {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px;
  margin: 0 0 24px 0;
}
.stat {
  background: var(--panel); padding: 12px 14px;
  border-left: 3px solid var(--accent-soft); border-right: 1px solid var(--rule);
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
.stat .label { font-family: var(--mono); font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.6px; }
.stat .value { font-size: 20px; font-weight: 600; color: var(--ink); margin-top: 2px; line-height: 1.2; }
.stat .delta { font-size: 11px; color: var(--muted); margin-top: 2px; }

.controls {
  background: var(--panel); border: 1px solid var(--rule); padding: 14px 18px; margin: 0 0 18px 0; border-radius: 4px;
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
}
.controls label { font-family: var(--mono); font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; margin-right: 4px; }
.controls input[type=range] { flex: 1; min-width: 280px; accent-color: var(--accent); }
.controls .selected-date { font-family: var(--mono); font-weight: 600; color: var(--accent); margin-left: 6px; min-width: 110px; display: inline-block; font-size: 13px; }
.controls select { font-family: var(--mono); font-size: 13px; padding: 4px 8px; border: 1px solid var(--rule); border-radius: 3px; background: var(--bg); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel {
  background: var(--panel); border: 1px solid var(--rule); padding: 16px; border-radius: 4px;
}
.panel h3 {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin: 0 0 6px 0;
  color: var(--accent);
}
.panel p.note { font-size: 12.5px; color: var(--muted); margin: 0 0 10px 0; line-height: 1.5; }
.panel.full { grid-column: 1 / span 2; }

table.diag { width: 100%; border-collapse: collapse; font-size: 12px; }
table.diag th, table.diag td { text-align: right; padding: 6px 8px; border-bottom: 1px solid var(--rule); }
table.diag th { color: var(--muted); font-weight: 500; text-transform: uppercase; font-size: 10px; letter-spacing: 0.5px; background: #f5f5f5; font-family: var(--mono); }
table.diag td.lbl, table.diag th.lbl { text-align: left; }

/* Footer */
.site-footer {
  margin-top: 60px;
  padding: 30px 32px;
  background: var(--ink);
  color: #aaa;
  font-size: 12px;
}
.site-footer .footer-inner {
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 30px;
}
.site-footer h4 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  color: #fff;
  letter-spacing: 1.2px;
  margin: 0 0 10px 0;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 4px 0; }
.site-footer a { color: #ccc; border: none; }
.site-footer a:hover { color: #fff; }
.site-footer .copyright { margin-top: 18px; padding-top: 14px; border-top: 1px solid #333; font-family: var(--mono); font-size: 10px; opacity: 0.6; }

/* Responsive */
@media (max-width: 720px) {
  .site-header { padding: 12px 18px; flex-direction: column; gap: 10px; align-items: flex-start; }
  .site-header nav { gap: 14px; flex-wrap: wrap; }
  main { padding: 20px; }
  .hero { padding: 36px 0 28px 0; }
  .hero h1 { font-size: 28px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .panel.full { grid-column: 1; }
  .site-footer .footer-inner { grid-template-columns: 1fr; }
}