:root {
  --color-bg: #faf6f0;
  --color-bg-alt: #f1e8db;
  --color-text: #2a2420;
  --color-text-muted: #6b5f54;
  --color-border: #ddd0c1;
  --color-accent: #a8433a;
  --color-accent-2: #3c7a6e;
  --color-accent-3: #c98a2c;
  --color-accent-contrast: #fff8f2;
  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  --font-sans: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 60rem;
  --radius: 0.25rem;
  --radius-lg: 0.75rem;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-x: hidden;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--color-text);
}

h1 {
  font-size: 2rem;
  margin: 0.25em 0 0.5em;
}

h2 {
  font-size: 1.375rem;
  margin: 1.5em 0 0.5em;
}

h3 {
  font-size: 1.0625rem;
  margin: 1.25em 0 0.4em;
}

p {
  margin: 0 0 1em;
}

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

a:hover,
a:focus {
  text-decoration-thickness: 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Header / nav */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.site-header,
.site-footer {
  padding: 1rem 1.25rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav {
  min-width: 0;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-accent);
}

/* Footer */

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer-links {
  margin-top: 0.4em;
}

.footer-links a {
  color: var(--color-text-muted);
}

/* Breadcrumbs */

.breadcrumbs {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

/* Entry lists (collection index pages) */

.entry-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1.5rem;
}

.entry-list-compact {
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: 1rem;
}

.entry-list li {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  padding: 1rem;
}

.entry-list li > a {
  font-weight: bold;
  text-decoration: none;
}

.entry-list li p {
  margin: 0.4em 0 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.entry-list .era {
  display: inline-block;
  margin-left: 0.5em;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.entry-thumb {
  margin: -1rem -1rem 0.75rem;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}

.entry-thumb img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* Article entries */

.entry-header .summary {
  color: var(--color-text-muted);
  font-size: 1.125rem;
}

.hero-image {
  margin: 1rem 0 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  max-height: 24rem;
  object-fit: cover;
}

.entry-meta {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 1rem;
  margin: 1.5rem 0;
}

.entry-meta dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35em 0.75em;
}

.entry-meta dt {
  font-weight: bold;
  color: var(--color-text-muted);
}

.entry-meta dd {
  margin: 0;
}

.related-entries {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.related-group h3 {
  margin-top: 0;
}

.related-group ul {
  margin: 0;
  padding-left: 1.1em;
}

.sources {
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.byline {
  margin-top: 2rem;
  font-style: italic;
  color: var(--color-text-muted);
}

/* Homepage */

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2rem;
  align-items: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 0 0 2.5rem;
}

.hero h1 {
  margin-top: 0;
}

.hero-lede {
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.button {
  display: inline-block;
  padding: 0.6em 1.3em;
  border-radius: 999px;
  text-decoration: none;
  font-weight: bold;
  font-size: 0.9375rem;
  border: 1.5px solid transparent;
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.button-primary:hover {
  background: #8f372f;
}

.button-secondary {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.button-secondary:hover {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.hero .hero-image {
  margin: 0;
  border-radius: var(--radius-lg);
}

.hero .hero-image img {
  max-height: none;
  aspect-ratio: 4 / 3;
}

.stats-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2.5rem;
  margin: 0 0 3rem;
  padding: 1.25rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.stat {
  text-align: center;
  min-width: 6rem;
}

.stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.875rem;
  font-weight: bold;
  color: var(--color-accent);
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0 3rem;
}

.category-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(42, 36, 32, 0.1);
}

.category-card.accent-2 {
  border-top-color: var(--color-accent-2);
}

.category-card.accent-3 {
  border-top-color: var(--color-accent-3);
}

.category-thumb img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.category-card h3 {
  margin: 0.85rem 1rem 0.25rem;
}

.category-card p {
  margin: 0 1rem 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.category-count {
  display: inline-block;
  margin: 0 1rem 1rem;
  padding: 0.2em 0.7em;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: bold;
  color: #fff;
  background: var(--color-accent);
}

.accent-2 .category-count {
  background: var(--color-accent-2);
}

.accent-3 .category-count {
  background: var(--color-accent-3);
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.section-heading h2 {
  margin-top: 0;
}

.section-heading a {
  font-size: 0.9375rem;
  white-space: nowrap;
}

@media (max-width: 40rem) {
  .hero {
    grid-template-columns: 1fr;
    padding: 1.5rem;
  }

  .hero-image {
    order: -1;
  }
}

/* History timeline */

.era-group {
  margin-bottom: 1.5rem;
}

/* Search */

#search {
  margin-top: 1.5rem;
}

/* Print */

@media print {
  .site-header,
  .site-footer,
  .breadcrumbs,
  #search {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  main {
    padding: 0;
    max-width: none;
  }

  .hero-image img {
    max-height: none;
  }
}