/* Youth-to-senior squad overlap — project page.
   Same house pattern as bus-check: vanilla CSS, no build step, no framework. */

:root {
  --bg: #FAFAF8;
  --bg-alt: #F1EFE9;
  --ink: #16150F;
  --ink-light: #55534A;
  --ink-faint: #8A887D;
  --rule: #D8D5CB;

  --men: #2E4E7E;
  --women: #8C3A62;
  --accent: #1F6F5C;
  --dropped: #B4B1A5;

  --max-w: 960px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent); }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--bg);
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ── Navigation ── */
.site-nav {
  border-bottom: 1px solid var(--rule);
  padding: 14px 0;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}
.site-nav .container {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--ink-faint);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color 0.15s;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a.nav-active { color: var(--ink); font-weight: 600; }
.site-nav .nav-spacer { margin-left: auto; }

/* ── Hero ── */
.hero {
  padding: 80px 0 44px;
  border-bottom: 3px solid var(--ink);
}
.hero-eyebrow,
.section-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 16px;
}
.hero h1 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
  font-size: clamp(36px, 6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
  max-width: 15em;
}
.hero-subtitle {
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink-light);
  max-width: 38em;
}

.hero-scale {
  display: flex;
  flex-wrap: wrap;
  gap: 0 40px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}
.hero-scale div { padding: 6px 0; }
.hero-scale dt {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.hero-scale dd {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 30px;
  line-height: 1.2;
}

/* ── Callout ── */
.callout {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--rule);
  padding: 44px 0;
}
.callout-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.callout h2 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
  max-width: 20em;
}
.callout p { color: var(--ink-light); max-width: 46em; }

/* ── Sections ── */
section { padding: 60px 0; border-bottom: 1px solid var(--rule); }
section:last-of-type { border-bottom: none; }

section h2 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
  font-size: clamp(26px, 3.8vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin-bottom: 14px;
  max-width: 20em;
}
section h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 32px 0 8px;
}
.section-lead {
  font-size: 18px;
  color: var(--ink-light);
  max-width: 42em;
  margin-bottom: 12px;
}
section p + p { margin-top: 14px; }
section p { max-width: 42em; }

ul.tight { margin: 14px 0 0 20px; max-width: 42em; }
ul.tight li { margin-bottom: 8px; }

strong { font-weight: 600; }
.num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.94em;
  font-weight: 500;
}

/* ── Figures ── */
figure { margin: 28px 0 26px; }
.chart-wrap {
  background: #fff;
  border: 1px solid var(--rule);
  padding: 12px 8px 8px;
  overflow-x: auto;
}
figcaption {
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-light);
  margin-top: 12px;
  max-width: 46em;
}
figcaption b { color: var(--ink); font-weight: 600; }

/* ── The recurring limit marker: a hatched edge on every claim that stops. ── */
.guard {
  position: relative;
  margin-top: 22px;
  padding: 16px 20px 16px 32px;
  background: #fff;
  border: 1px solid var(--rule);
  max-width: 46em;
}
.guard::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 10px;
  background: repeating-linear-gradient(
    -45deg, var(--ink) 0 2px, #fff 2px 6px
  );
}
.guard-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 6px;
}
.guard p { font-size: 16px; max-width: none; }

/* ── Nigeria portrait ── */
.portrait {
  margin-top: 28px;
  border-top: 3px solid var(--ink);
  padding-top: 22px;
}
.table-wrap { overflow-x: auto; }
.portrait-rows {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 15px;
}
.portrait-rows caption {
  text-align: left;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-bottom: 8px;
}
.portrait-rows th,
.portrait-rows td {
  text-align: left;
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.portrait-rows thead th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.portrait-rows td.figure {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 500;
  white-space: nowrap;
}
.portrait-rows tr.out td { color: var(--ink-faint); }
.portrait-rows .flag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--ink-faint);
}

/* ── Legend pills ── */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 14px 0 4px;
}
.legend span {
  font-size: 13px;
  color: var(--ink-light);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.legend i {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.legend i.hatched {
  border-radius: 0;
  background: repeating-linear-gradient(
    -45deg, var(--dropped) 0 2px, #fff 2px 5px
  );
  border: 1px solid var(--dropped);
}

/* ── Footer ── */
footer {
  border-top: 3px solid var(--ink);
  padding: 40px 0 56px;
  font-size: 15px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
}
.footer-sources dt {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 12px;
}
.footer-sources dt:first-child { margin-top: 0; }
.footer-sources dd { color: var(--ink-light); }
footer a { color: var(--accent); }
.footer-right { text-align: right; }
.footer-right p { margin-bottom: 8px; }

@media (max-width: 720px) {
  body { font-size: 16px; }
  .hero { padding: 56px 0 36px; }
  .hero-scale { gap: 0 28px; }
  .hero-scale dd { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-right { text-align: left; }
  .site-nav .nav-spacer { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}