/* ---------------------------------------------------------------
   Nudge Wiki — design tokens
   Grotesque display + serif body + mono for evidence/data, on a
   cool light ground. Teal marks structure (concepts, links, nav);
   a single warm coral is reserved for measured results only.
--------------------------------------------------------------- */
:root {
  --ink: #1b1f23;
  --paper: #f1f3f5;
  --paper-raised: #ffffff;
  --line: #d9dee3;
  --muted: #5b6470;
  --signal: #0e7c7b;
  --signal-tint: #0e7c7b1a;
  --evidence: #d6491f;
  --evidence-tint: #d6491f14;

  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body: 'Lora', Georgia, 'Times New Roman', serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --measure: 42rem;
  --wide: 68rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e7e9ec;
    --paper: #121518;
    --paper-raised: #1b1f23;
    --line: #2a2f35;
    --muted: #9aa4ae;
    --signal: #49d6c8;
    --signal-tint: #49d6c822;
    --evidence: #ff8659;
    --evidence-tint: #ff865920;
  }
}

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.page-narrow { max-width: var(--measure); }

a { color: var(--signal); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.skip a {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--paper-raised);
  color: var(--ink);
  padding: 0.75rem 1rem;
  z-index: 100;
}
.skip a:focus {
  left: 1rem;
  top: 1rem;
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ---------- header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  padding-block: 1rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  padding-block: 0.25rem;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  border-bottom-color: var(--signal);
}

.site-search { flex: 1 1 12rem; max-width: 16rem; }

.site-search input {
  width: 100%;
  font: inherit;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  padding: 0.4rem 0.6rem;
}

.site-search input:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 1px;
}

/* ---------- typography helpers ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 0.6rem;
}

h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 1rem;
}

h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  margin: 2.25rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
}

p { margin: 0 0 1rem; }

.count-badge {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1.1rem;
  color: var(--muted);
  vertical-align: middle;
}

/* ---------- hero ---------- */
.hero { padding-block: 3rem 2rem; }

.hero h1 { max-width: 30ch; }

.lede {
  max-width: var(--measure);
  color: var(--muted);
  font-size: 1.1rem;
}

/* ---------- browse cards ---------- */
.browse-section { padding-block: 1rem 3.5rem; }

.browse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.browse-card {
  background: var(--paper-raised);
  padding: 1.5rem 1.25rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.browse-card:hover { background: var(--signal-tint); }

.browse-count {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  color: var(--signal);
}

.browse-label {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--ink);
}

/* ---------- listing pages ---------- */
.listing { padding-block: 0.5rem 3.5rem; }

.listing-row {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr) 12rem;
  gap: 1rem;
  align-items: baseline;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
}

.listing-row:hover .listing-title { color: var(--signal); }

.listing-title {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--ink);
}

.listing-type-badge {
  display: block;
  width: fit-content;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  padding: 0.05rem 0.35rem;
  margin-top: 0.35rem;
}

.listing-gist {
  color: var(--muted);
  font-size: 0.95rem;
}

.listing-episodes {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-align: right;
}

.empty-state { color: var(--muted); padding-block: 2rem; }

filter-list { display: block; }

.filter-list-controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.filter-list-controls label { color: var(--muted); }

.filter-list-controls input {
  font: inherit;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  padding: 0.35rem 0.6rem;
  min-width: 14rem;
}

.filter-list-controls input:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 1px;
}

.result-count-message { color: var(--muted); }

.listing-row.hidden { display: none; }

/* ---------- individual page ---------- */
.page-article { padding-block: 2.5rem 4rem; }

.page-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  margin-top: -0.5rem;
}

.meta-line {
  font-size: 0.9rem;
  color: var(--muted);
}

.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.5rem; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: var(--signal);
  background: var(--signal-tint);
  border-radius: 3px;
  padding: 0.2rem 0.5rem;
}

.page-body { margin-top: 1.5rem; }

.page-body ul,
.page-body ol {
  padding-left: 1.4rem;
  margin: 0 0 1rem;
}

.page-body li { margin-bottom: 0.4rem; }

.page-body strong {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--evidence);
  background: var(--evidence-tint);
  padding: 0.05em 0.3em;
  border-radius: 2px;
}

.page-body blockquote {
  margin: 1.25rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--signal);
  color: var(--muted);
}

.page-body a.wikilink {
  color: var(--signal);
  text-decoration-style: solid;
}

.page-body span.citation {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--muted);
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2rem;
  margin-top: 2rem;
}

.site-footer p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- responsive ---------- */
@media (max-width: 40rem) {
  .listing-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
  .listing-episodes { order: -1; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}