/* ========================================================================
   Discpedia — Wikipedia-inspired stylesheet
   Designed to feel like the Vector skin: serif-ish body, blue links,
   right-floating infobox, left TOC, thin gray dividers.
   ======================================================================== */

:root {
  --link: #3366cc;
  --link-visited: #795cb2;
  --link-hover: #447ff5;
  --link-red: #ba0000; /* "missing article" red */
  --text: #202122;
  --text-muted: #54595d;
  --border: #a2a9b1;
  --border-light: #c8ccd1;
  --bg: #ffffff;
  --bg-base: #f8f9fa;
  --bg-sidebar: #f6f6f6;
  --bg-infobox: #f8f9fa;
  --bg-infobox-header: #eaecf0;
  --bg-toc: #f8f9fa;
  --bg-note: #fdf6e3;
  --community-accent: #1b8754;
  --manufacturer-accent: #2563eb;
  --font-serif: "Linux Libertine", Georgia, "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-base);
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--link-hover); }
a:visited { color: var(--link-visited); }
a.new { color: var(--link-red); } /* red link convention */

/* ---------- Page chrome ---------- */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border-light);
  padding: 8px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.site-logo {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: normal;
  line-height: 1;
  color: var(--text);
}
.site-logo a, .site-logo a:visited { color: var(--text); }
.site-logo .tagline {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  margin-top: 2px;
}
.site-search { flex: 1; max-width: 480px; margin-left: auto; }
.site-search input {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 13px;
  font-family: var(--font-sans);
}
.site-search input:focus { outline: 1px solid var(--link); border-color: var(--link); }

.site-tabs {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}
.site-tabs ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0;
  font-size: 13px;
}
.site-tabs li { padding: 0; }
.site-tabs a {
  display: block;
  padding: 8px 14px;
  color: var(--link);
  border-right: 1px solid var(--border-light);
}
.site-tabs a:hover { background: var(--bg-base); text-decoration: none; }
.site-tabs a.active { color: var(--text); font-weight: bold; background: var(--bg-base); }

.layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0;
  background: var(--bg);
}
.sidebar {
  background: var(--bg-sidebar);
  padding: 18px 12px;
  font-size: 13px;
  border-right: 1px solid var(--border-light);
  min-height: 70vh;
}
.sidebar h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
  margin: 16px 0 6px 0;
  font-weight: normal;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 2px;
}
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { padding: 2px 0; }
.sidebar a { display: block; padding: 1px 4px; }

.content {
  padding: 18px 28px 60px 28px;
  max-width: 1100px;
  background: var(--bg);
}

/* ---------- Article header ---------- */
.article-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: normal;
  margin: 0 0 4px 0;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-light);
}
.article-subtitle {
  color: var(--text-muted);
  font-size: 12px;
  margin: 0 0 18px 0;
  font-style: italic;
}
.article-body { font-family: sans-serif; }
.article-body h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: normal;
  margin: 28px 0 8px 0;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-light);
}
.article-body h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: bold;
  margin: 18px 0 6px 0;
}
.article-body p { margin: 0 0 12px 0; }
.article-body p.lead { font-size: 15px; }
.article-body ul, .article-body ol { margin: 0 0 12px 24px; padding: 0; }
.article-body li { margin: 2px 0; }
.article-body blockquote {
  border-left: 3px solid var(--border-light);
  padding: 4px 16px;
  margin: 12px 0;
  color: var(--text-muted);
  font-style: italic;
}

/* ---------- Infobox (right floating) ---------- */
.infobox {
  float: right;
  width: 280px;
  margin: 0 0 16px 18px;
  border: 1px solid var(--border-light);
  background: var(--bg-infobox);
  font-size: 12px;
  line-height: 1.4;
}
.infobox-header {
  background: var(--bg-infobox-header);
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: bold;
  text-align: center;
  padding: 8px 6px;
  border-bottom: 1px solid var(--border-light);
}
.infobox-image {
  text-align: center;
  padding: 12px 8px;
  border-bottom: 1px solid var(--border-light);
  background: #fff;
}
.infobox-image svg { max-width: 100%; height: auto; }
.infobox-section-title {
  background: var(--bg-infobox-header);
  text-align: center;
  padding: 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.infobox table { width: 100%; border-collapse: collapse; }
.infobox th, .infobox td {
  padding: 4px 8px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border-light);
}
.infobox th {
  background: transparent;
  width: 110px;
  color: var(--text-muted);
  font-weight: normal;
}

/* ---------- TOC ---------- */
.toc {
  display: inline-block;
  background: var(--bg-toc);
  border: 1px solid var(--border-light);
  padding: 8px 14px 8px 8px;
  margin: 12px 0 18px 0;
  font-size: 13px;
}
.toc-title {
  font-weight: bold;
  text-align: center;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.toc ol { margin: 0 0 0 22px; padding: 0; }
.toc ol ol { margin-left: 18px; }
.toc li { margin: 1px 0; }

/* ---------- Flight stats widget (the differentiator) ---------- */
.flight-stats {
  margin: 18px 0 24px 0;
  border: 1px solid var(--border-light);
  border-radius: 2px;
  overflow: hidden;
  background: #fff;
  clear: right;
}
.flight-stats-title {
  background: var(--bg-infobox-header);
  padding: 8px 12px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: bold;
  border-bottom: 1px solid var(--border-light);
}
.flight-stats-row {
  display: grid;
  grid-template-columns: 180px repeat(4, 1fr) 1fr;
  gap: 0;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-light);
  align-items: center;
}
.flight-stats-row:last-child { border-bottom: none; }
.flight-stats-row.header {
  background: var(--bg-base);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted);
}
.flight-stats-row .source { font-weight: bold; }
.flight-stats-row .source.manufacturer { color: var(--manufacturer-accent); }
.flight-stats-row .source.community { color: var(--community-accent); }
.flight-stats-row .stat { font-family: var(--font-serif); font-size: 18px; text-align: center; }
.flight-stats-row .meta { font-size: 11px; color: var(--text-muted); text-align: right; }
.flight-stats-delta {
  font-size: 11px;
  display: block;
  color: var(--text-muted);
  font-family: var(--font-sans);
}
.flight-stats-footer {
  padding: 8px 12px;
  background: var(--bg-base);
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
}
.flight-stats-footer a { font-size: 11px; }

/* ---------- Hatnotes and badges ---------- */
.hatnote {
  font-size: 12px;
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-left: 16px;
}
.badge {
  display: inline-block;
  padding: 1px 6px;
  background: var(--bg-infobox-header);
  border-radius: 2px;
  font-size: 11px;
  color: var(--text);
  margin-right: 4px;
}
.note-box {
  background: var(--bg-note);
  border: 1px solid #e7d693;
  padding: 8px 12px;
  margin: 14px 0;
  font-size: 13px;
  border-radius: 2px;
}

/* ---------- Disc index / browse ---------- */
.disc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 16px;
}
.disc-card {
  border: 1px solid var(--border-light);
  background: #fff;
  padding: 12px;
  font-size: 13px;
}
.disc-card h3 {
  margin: 0 0 4px 0;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: normal;
}
.disc-card .meta { color: var(--text-muted); font-size: 12px; margin-bottom: 8px; }
.disc-card .nums { font-family: var(--font-serif); font-size: 16px; letter-spacing: 1px; }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
  padding: 10px 12px;
  background: var(--bg-base);
  border: 1px solid var(--border-light);
  font-size: 13px;
  align-items: center;
}
.filter-bar select, .filter-bar input {
  padding: 5px 8px;
  border: 1px solid var(--border);
  font-size: 13px;
  font-family: var(--font-sans);
}
.filter-bar label { color: var(--text-muted); font-size: 12px; margin-right: 4px; }

/* ---------- Compare tool ---------- */
.compare-tool {
  border: 1px solid var(--border-light);
  background: #fff;
  padding: 16px;
  margin-top: 12px;
}
.compare-pickers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.compare-picker label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.compare-picker select {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
  font-family: var(--font-sans);
}
.compare-results { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 18px; }
.compare-col { border: 1px solid var(--border-light); padding: 12px; background: #fff; }
.compare-col h3 { font-family: var(--font-serif); font-weight: normal; margin: 0 0 4px 0; font-size: 18px; }
.compare-col .meta { color: var(--text-muted); font-size: 12px; margin-bottom: 8px; }
.compare-col .nums { font-family: var(--font-serif); font-size: 18px; letter-spacing: 1px; }
.compare-col svg { display: block; margin: 8px auto; }
.compare-col table { width: 100%; font-size: 12px; border-collapse: collapse; margin-top: 8px; }
.compare-col th, .compare-col td { text-align: left; padding: 3px 4px; border-bottom: 1px solid var(--border-light); }
.compare-col th { color: var(--text-muted); font-weight: normal; width: 50%; }

.flight-overlay {
  margin-top: 20px;
  padding: 12px;
  border: 1px solid var(--border-light);
  background: var(--bg-base);
  text-align: center;
}
.flight-overlay h3 { margin: 0 0 8px 0; font-family: var(--font-serif); font-weight: normal; }

.compare-delta {
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--border-light);
  background: #fff;
}
.compare-delta h3 {
  margin: 0 0 10px 0;
  font-family: var(--font-serif);
  font-weight: normal;
  font-size: 20px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 4px;
}
.delta-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-bottom: 14px;
}
.delta-table th, .delta-table td {
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}
.delta-table thead th {
  background: var(--bg-base);
  font-weight: bold;
  font-size: 12px;
  color: var(--text);
  border-bottom: 2px solid var(--border);
}
.delta-table tbody th {
  font-weight: normal;
  color: var(--text-muted);
  width: 130px;
}
.delta-table .delta-cell {
  font-family: var(--font-serif);
  font-weight: bold;
  text-align: right;
  width: 100px;
  color: #1b8754;
}
.delta-insights h4 {
  margin: 12px 0 6px 0;
  font-family: var(--font-serif);
  font-weight: bold;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
}
.delta-insights ul { margin: 0 0 0 22px; padding: 0; }
.delta-insights li { margin: 6px 0; font-size: 13px; }

/* ---------- Blog ---------- */
.blog-index { margin-top: 12px; }
.blog-entry {
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
}
.blog-entry h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: normal;
  margin: 0 0 4px 0;
}
.blog-entry .meta { color: var(--text-muted); font-size: 12px; margin-bottom: 6px; }
.blog-entry p { margin: 0; }

.blog-post { max-width: 720px; }
.blog-post .blog-meta { color: var(--text-muted); font-size: 12px; margin-bottom: 16px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-base);
  border-top: 1px solid var(--border-light);
  padding: 18px 28px;
  font-size: 12px;
  color: var(--text-muted);
}
.site-footer a { color: var(--text-muted); }

/* ---------- Homepage ---------- */
.hero {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-base) 100%);
  padding: 32px 20px;
  border-bottom: 1px solid var(--border-light);
  text-align: center;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: normal;
  margin: 0 0 8px 0;
}
.hero p { color: var(--text-muted); font-size: 16px; margin: 0 0 16px 0; }
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-muted);
}
.hero-stats strong { display: block; color: var(--text); font-family: var(--font-serif); font-size: 26px; }
.home-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 28px;
  margin-top: 16px;
}
.home-section h2 { font-family: var(--font-serif); font-size: 20px; font-weight: normal; border-bottom: 1px solid var(--border-light); padding-bottom: 4px; }
.featured-disc {
  border: 1px solid var(--border-light);
  padding: 12px;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 14px;
  align-items: center;
  margin-bottom: 10px;
  background: #fff;
}
.featured-disc h3 { margin: 0; font-family: var(--font-serif); font-size: 17px; font-weight: normal; }
.featured-disc .meta { color: var(--text-muted); font-size: 12px; }

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .infobox { float: none; width: 100%; margin: 0 0 16px 0; }
  .home-grid, .compare-pickers, .compare-results { grid-template-columns: 1fr; }
  .flight-stats-row { grid-template-columns: 1fr; text-align: center; }
  .flight-stats-row .meta { text-align: center; }
}

/* ---------- Print ---------- */
@media print {
  .sidebar, .site-tabs, .site-search, .site-footer { display: none; }
}