:root {
  /* fonts */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Source Serif 4", "Charter", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-fancy: "Baskervville", "STIX Two Text", "Libre Baskerville", Georgia, serif;

  /* dark palette (default) */
  color-scheme: dark light;
  --bg: #0f1115;
  --fg: #e6e7ea;
  --muted: #a5adbb;
  --accent: #7aa2ff;

  --surface: #181b20;
  --surface-border: #2a2f37;

  /* chips tuned for dark UI */
  --chip-bg: #243042;           /* memes */
  --chip-theme-bg: #203a33;     /* themes */
  --chip-concept-bg: #3b2e1f;   /* concepts */
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  line-height: 1.6;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-kerning: normal;
  font-feature-settings: "liga" 1, "calt" 1, "kern" 1, "onum" 0, "lnum" 1; /* lining numerals for technical text */
}

a { color: var(--accent); }
a:hover, a:focus { text-decoration: underline; }

.wrap {
  width: min(60rem, 100%);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding-block: 1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-weight: 600;
}

.site-nav a {
  color: inherit;
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
}

.site-nav a:hover,
.site-nav a:focus {
  background: var(--surface);
  outline: none;
}

#search {
  flex: 1 1 16rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--surface-border);
  font-size: 1rem;
}

.prose {
  display: grid;
  gap: 1rem;
}

.prose h2 {
  margin-top: 2rem;
  font-size: 1.5rem;
}

.prose p {
  margin: 0;
}

.prose img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1rem auto;
  border-radius: 0.5rem; /* optional aesthetic */
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  margin: 0.125rem 0.25rem 0.125rem 0;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--fg);
  font-size: 0.875rem;
  text-decoration: none;
}

.chip--theme {
  background: var(--chip-theme-bg);
}

.chip--concept {
  background: var(--chip-concept-bg);
}

#search-results {
  position: relative;
  width: 100%;
}

#search-results ul {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  position: absolute;
  inset-inline: 0;
  top: 0.5rem;
  z-index: 10;
  max-height: 24rem;
  overflow-y: auto;
  background: var(--surface);
  border-radius: 0.75rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
  border: 1px solid var(--surface-border);
}

#search-results li {
  padding: 0.5rem 1rem;
  border-bottom: 1px solid rgba(13, 27, 42, 0.08);
}

#search-results li:last-child {
  border-bottom: none;
}

#search-results a {
  font-weight: 600;
  color: inherit;
  text-decoration: none;
}

#search-results a:hover,
#search-results a:focus {
  text-decoration: underline;
}

#search-results p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.catalog {
  display: grid;
  gap: 1rem;
}

.catalog__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}

.catalog__control {
  display: grid;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.catalog__control > span {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.catalog__control select,
.catalog__control input[type="search"] {
  min-width: 14rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--surface-border);
  font-size: 1rem;
  color: inherit;
  background: var(--surface);
}

.catalog__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.catalog__item {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  display: grid;
  gap: 0.5rem;
}

.catalog__item h3 {
  margin: 0;
  font-size: 1.125rem;
}

.catalog__item p {
  margin: 0;
  color: var(--muted);
}

.catalog__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.catalog__related {
  display: grid;
  gap: 0.25rem;
}

.catalog__related-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--muted);
}

.link-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: grid;
  gap: 0.25rem;
}

.link-list a {
  color: inherit;
}

.meta {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0 0 1rem;
}

.related {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
}

.related h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

@media (max-width: 40rem) {
  .wrap {
    padding-inline: 1rem;
  }

  #search-results ul {
    position: static;
    box-shadow: none;
  }
}

.home-hero { margin: 1rem 0 2rem; }
.home-hero .lede { opacity: .85; margin-top: .25rem; }
.home-search input[type="search"] { width: 100%; max-width: 28rem; margin-top: .75rem; }

.stat-cards { display:flex; gap:1rem; flex-wrap:wrap; padding:0; list-style:none; }
.stat-cards li { background:var(--chip); border-radius:12px; padding:.75rem 1rem; }
.stat-num { font-size:1.5rem; font-weight:700; display:block; }
.stat-label { opacity:.8; }

pre[class*="language-"],
code[class*="language-"] {
  background: #0f1115;  /* blend with your dark theme */
  color: #dcdcdc;
  border-radius: 8px;
}

pre[class*="language-"] {
  padding: 1rem;
  overflow: auto;
}

/* Optional: monospace font */
code, pre, pre code {
  font-family: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95rem;
  line-height: 1.5;
}

.figure-img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.25rem auto;
  border-radius: 0.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.figure-img--wide {
  width: 100%;
}

.figure-img--narrow {
  max-width: 60%;
}

.figure-caption {
  font-size: 0.875rem;
  text-align: center;
  color: var(--muted);
  margin-top: 0.25rem;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.25rem 0;
  background: var(--surface);
  border-radius: 0.5rem;
  font-style: italic;
  color: var(--muted);
}

blockquote p {
  margin: 0;
}

blockquote cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
  text-align: right;
}