/* ============================================================
   Presidents in Time — shared stylesheet
   Themeable tokens live at :root so color changes are one-liners.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Spectral:ital,wght@0,400;0,500;1,400&display=swap');

:root {
  /* --- core palette --- */
  --bg:            #FAFAF7;   /* warm cream page */
  --panel:         #FFFFFF;   /* popovers / dropdown surfaces */
  --ink:           #23211C;   /* near-black warm text */
  --ink-soft:      #5C564B;   /* secondary text */
  --muted:         #8C8474;   /* metadata, term numbers */
  --hairline:      #E7E2D6;   /* faint separators (toolbars only, never the grid) */

  /* --- empty-cell tints (subtle warm difference) --- */
  --cell-unborn:   #F1EDE3;   /* not yet born — lighter */
  --cell-deceased: #E6E0D2;   /* already deceased — a touch darker/warmer */

  /* --- in-term ring (single source of truth) --- */
  --color-in-term: #B8972A;

  /* --- type --- */
  --serif: 'Spectral', Georgia, 'Palatino Linotype', Palatino, serif;
  --sans:  -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* --- geometry --- */
  --radius: 8px;
  --gap:    12px;
  --header-h: 64px;          /* page header height */
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }

/* ============================================================
   Page header — fully self-contained & portable.
   Drop this same markup into any page; no structural changes.
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  flex: none;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: var(--bg);
  border-bottom: 1px solid var(--hairline);
}

.site-header .logo {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.site-header .logo .dot { color: var(--color-in-term); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.site-nav a {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  color: var(--muted);
  padding: 4px 0;
  position: relative;
  transition: color 0.15s ease;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a.active { color: var(--ink); }
.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--color-in-term);
  border-radius: 2px;
}

/* ============================================================
   About page layout
   ============================================================ */
.prose {
  max-width: 680px;
  margin: 0 auto;
  padding: 72px 28px 120px;
}
.prose .eyebrow {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}
.prose h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
}
.prose h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 24px;
  margin: 56px 0 16px;
}
.prose p {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.66;
  color: var(--ink-soft);
  margin: 0 0 20px;
  text-wrap: pretty;
}
.prose ul {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-left: 20px;
  margin: 0 0 20px;
}
.prose li { margin-bottom: 8px; }
.prose a.inline { color: var(--ink); text-decoration: underline; text-decoration-color: var(--hairline); text-underline-offset: 3px; }
.prose a.inline:hover { text-decoration-color: var(--color-in-term); }

.credits {
  border-top: 1px solid var(--hairline);
  padding-top: 28px;
  margin-top: 8px;
}
.credits dl {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 12px 24px;
  font-family: var(--sans);
  font-size: 14px;
  margin: 0;
}
.credits dt { color: var(--muted); font-weight: 500; }
.credits dd { margin: 0; color: var(--ink-soft); }

.placeholder-block {
  margin-top: 24px;
  border: 1px dashed var(--hairline);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  background:
    repeating-linear-gradient(45deg, transparent 0 11px, rgba(140,132,116,0.05) 11px 12px);
}