/* Product Feature Research — wiki page stylesheet
   Shared across all generated HTML pages. Edit here, rebuild.
*/

:root {
  --bg: #FAF6F1;
  --panel: #FFFFFF;
  --ink: #191818;
  --ink-2: #3B3836;
  --ink-3: #6E6864;
  --ink-4: #A29C96;
  --rule: #E1DAD1;
  --rule-soft: #EEE8DF;
  --replit: #FF3C00;
  --replit-wash: #FFE8DF;
  --anything: #0F766E;
  --anything-wash: #DCF2EE;
  --yes: #1F9254;
  --no: #B3261E;
  --partial: #B7791F;
  --purple: #7E22CE;
  --purple-wash: #F1EBFF;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 15.5px;
  line-height: 1.62;
  font-feature-settings: "ss01", "cv11", "liga";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.serif { font-family: ui-serif, "Source Serif 4", "New York", "Iowan Old Style", Georgia, serif; letter-spacing: -0.012em; }
.mono { font-family: ui-monospace, "SFMono-Regular", Menlo, "Courier New", monospace; }
.wrap { max-width: 820px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 48px); }

/* Sticky top nav */
.topnav {
  position: sticky; top: 0; z-index: 10;
  border-bottom: 1px solid var(--rule);
  padding: 12px 0;
  background: rgba(250, 246, 241, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
}
.topnav .wrap { max-width: 1240px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; gap: 20px; }
.topnav a { color: var(--ink-2); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.12s; }
.topnav a:hover { border-bottom-color: var(--ink); }
.topnav .home { font-weight: 500; color: var(--ink); display: inline-flex; align-items: center; gap: 8px; letter-spacing: 0.02em; }
.topnav .home::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--replit); display: inline-block; }
.topnav nav { display: flex; gap: 20px; flex-wrap: wrap; }

/* Main */
main.wrap { padding-top: 40px; padding-bottom: 72px; }

/* Breadcrumb + title */
.breadcrumb {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11.5px;
  color: var(--ink-4);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.breadcrumb .sep { color: var(--ink-4); margin: 0 4px; }

.page-title {
  font-family: ui-serif, "Source Serif 4", "New York", Georgia, serif;
  font-weight: 500;
  font-size: clamp(32px, 5vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 24px;
  color: var(--ink);
}

/* Metadata block (from frontmatter) */
.metadata {
  margin: 0 0 40px;
  padding: 18px 22px;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: 0 1px 0 rgba(25,24,24,0.03);
}
.metadata dl {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 8px 24px;
  margin: 0;
  font-size: 13px;
}
.metadata dt {
  color: var(--ink-3);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-top: 2px;
  margin: 0;
}
.metadata dd { margin: 0; color: var(--ink-2); }
.metadata dd a { color: var(--ink-2); text-decoration: none; border-bottom: 1px solid var(--rule); }
.metadata dd a:hover { border-bottom-color: var(--ink); }
.metadata dd code { font-size: 12px; }
.metadata .badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--rule-soft);
  color: var(--ink-2);
}
.metadata .badge.replit { background: var(--replit-wash); color: var(--replit); }
.metadata .badge.anything { background: var(--anything-wash); color: var(--anything); }

/* Prose typography */
.prose { line-height: 1.66; }
.prose > :first-child { margin-top: 0; }
.prose h1,
.prose h2,
.prose h3 {
  font-family: ui-serif, "Source Serif 4", "New York", Georgia, serif;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--ink);
}
.prose h1 {
  font-size: 34px;
  margin: 0 0 24px;
  letter-spacing: -0.025em;
}
.prose h2 {
  font-size: 24px;
  margin: 44px 0 14px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}
.prose h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.prose h3 { font-size: 18px; margin: 30px 0 10px; }
.prose h4 {
  font-family: inherit;
  font-weight: 600;
  font-size: 14.5px;
  margin: 24px 0 8px;
  color: var(--ink);
  letter-spacing: 0;
}
.prose p { margin: 0 0 14px; color: var(--ink-2); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose em { font-style: italic; }
.prose ul, .prose ol { margin: 0 0 14px; padding-left: 24px; color: var(--ink-2); }
.prose li { margin-bottom: 4px; }
.prose li > p { margin-bottom: 4px; }
.prose a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.12s;
}
.prose a:hover { border-bottom-color: var(--ink); }
.prose code {
  background: var(--rule-soft);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.89em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--ink);
}
.prose pre {
  background: var(--panel);
  border: 1px solid var(--rule);
  padding: 14px 16px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 0 0 16px;
  font-size: 13px;
}
.prose pre code { background: none; padding: 0; font-size: 13px; }
.prose hr { border: none; border-top: 1px solid var(--rule); margin: 40px 0; }
.prose blockquote {
  margin: 0 0 16px;
  padding: 4px 16px;
  border-left: 2px solid var(--rule);
  color: var(--ink-3);
  font-style: italic;
}

/* Tables */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 22px;
  font-size: 13.5px;
  display: block;
  overflow-x: auto;
}
.prose table thead { border-bottom: 1px solid var(--ink); }
.prose table th,
.prose table td {
  text-align: left;
  padding: 10px 14px;
  vertical-align: top;
  border-bottom: 1px solid var(--rule-soft);
}
.prose table thead th {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
  padding-top: 4px;
  padding-bottom: 10px;
}
.prose table td code { font-size: 12px; }

/* Callouts — replace plain blockquote when it starts with one of our emoji markers */
.callout {
  display: flex;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 6px;
  margin: 0 0 16px;
  align-items: flex-start;
  border-left: 3px solid;
  font-size: 14.5px;
}
.callout-emoji { font-size: 17px; line-height: 1.4; flex-shrink: 0; }
.callout-body { flex: 1; }
.callout-body > :first-child { margin-top: 0; }
.callout-body > :last-child { margin-bottom: 0; }
.callout-body p { margin: 0 0 8px; }
.callout-body p:last-child { margin-bottom: 0; }
.callout.synthesis {
  background: var(--purple-wash);
  border-color: var(--purple);
}
.callout.synthesis .callout-body { color: #3F1D6D; }
.callout.synthesis .callout-body strong { color: #2E1254; }
.callout.unclear {
  background: #FEF6E2;
  border-color: var(--partial);
}
.callout.unclear .callout-body { color: #713F12; }
.callout.warning {
  background: #FEE8E6;
  border-color: var(--no);
}
.callout.warning .callout-body { color: #7F1D1D; }

/* Has-it / missing marks inside tables */
.prose table td { position: relative; }

/* Unresolved wiki-links */
.unresolved {
  color: var(--ink-4);
  border-bottom: 1px dashed var(--ink-4);
  cursor: help;
}

/* Footer */
.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--rule);
  font-size: 12px;
  color: var(--ink-3);
}
.site-footer .wrap {
  max-width: 1240px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.site-footer a { color: var(--ink-2); text-decoration: none; border-bottom: 1px solid var(--rule); }
.site-footer a:hover { border-bottom-color: var(--ink); }

/* Responsive */
@media (max-width: 640px) {
  .prose h1, .page-title { font-size: 28px; }
  .prose h2 { font-size: 20px; }
  .metadata dl { grid-template-columns: 1fr; gap: 0; }
  .metadata dt { padding-top: 10px; font-size: 10px; }
  .metadata dt:first-of-type { padding-top: 0; }
  .topnav nav { gap: 12px; font-size: 12px; }
}