/* ==========================================================================
   Runchero Information Depo - pixel theme
   Pixel-art accents with readable type, clear navigation and high-contrast links.
   ========================================================================== */

:root {
  /* palette (kept in sync with app/palette.py) */
  --ink: #1b1b23;
  --ink2: #2f3140;
  --paper: #fdf6e3;
  --paper2: #f3e7c8;
  --white: #ffffff;
  --cream: #ffe9b0;
  --sky: #6ab0f3;
  --sky2: #3f7fd6;
  --navy: #24427a;
  --grass: #6cc24a;
  --grass2: #3f8f2f;
  --grass3: #8fdc6a;
  --soil: #8a5a34;
  --soil2: #5c3a1e;
  --sun: #ffd24a;
  --sun2: #f0a92e;
  --tomato: #e04b4b;
  --tomato2: #a32e2e;
  --orange: #f0902e;
  --brown: #a8763f;
  --wood: #b9834f;
  --silver: #c3ccd8;
  --grey: #8a94a6;
  --grey2: #5b6474;
  --teal: #3fc4b0;
  --teal2: #2a8d80;
  --plum: #9b4dab;
  --pink: #f28ab2;
  --cyan: #57c7d4;

  --pixel: 4px;
  --shadow: 4px 4px 0 var(--ink);
  --shadow-sm: 2px 2px 0 var(--ink);

  --font-pixel: "Press Start 2P", "Silkscreen", "VT323", "Pixelify Sans",
                "Lucida Console", "DejaVu Sans Mono", "Courier New", monospace;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    linear-gradient(180deg, rgba(106, 176, 243, .10) 0 220px, transparent 220px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.035) 0 2px, transparent 2px 4px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 2px, transparent 2px 4px);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

img, svg { image-rendering: pixelated; image-rendering: crisp-edges; }

a { color: var(--sun); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--white); text-decoration-thickness: 3px; }

h1, h2, h3, h4 {
  font-family: var(--font-pixel);
  line-height: 1.35;
  margin: 0 0 .6em;
  letter-spacing: .04em;
}
h1 { font-size: 20px; color: var(--sun); text-shadow: 3px 3px 0 var(--ink); }
h2 { font-size: 15px; color: var(--grass3); }
h3 { font-size: 13px; color: var(--cream); }

code, pre, .mono { font-family: "DejaVu Sans Mono", "Courier New", monospace; }

hr { border: 0; border-top: 3px solid var(--grey2); margin: 20px 0; }

/* ------------------------------------------------------------------ shell */
.wrap { max-width: 1220px; margin: 0 auto; padding: 16px 14px 60px; }

.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  background: var(--ink2);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow);
  padding: 10px 12px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 42px; width: auto; display: block; }
.brand .name {
  font-family: var(--font-pixel);
  font-size: 15px;
  color: var(--cream);
  line-height: 1.2;
}
.brand .name small {
  display: block;
  font-family: var(--font-body);
  font-size: 10px;
  color: var(--grey);
  letter-spacing: .16em;
  text-transform: uppercase;
}

.badge {
  display: inline-block;
  font-family: var(--font-pixel);
  font-size: 9px;
  padding: 5px 7px;
  border: 2px solid var(--ink);
  background: var(--tomato);
  color: var(--white);
  box-shadow: var(--shadow-sm);
  letter-spacing: .1em;
}
.badge.green { background: var(--grass2); }
.badge.blue  { background: var(--navy); }
.badge.grey  { background: var(--grey2); }

.spacer { flex: 1 1 auto; }

.searchbox { position: relative; flex: 1 1 280px; max-width: 420px; }
.searchbox input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 13px;
  padding: 10px 12px 10px 36px;
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  outline: none;
}
.searchbox input:focus { background: var(--white); border-color: var(--grass2); }
.searchbox .glyph {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  pointer-events: none;
}
.suggestions {
  position: absolute;
  z-index: 40;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow);
  display: none;
  max-height: 60vh;
  overflow: auto;
}
.suggestions.open { display: block; }
.suggestions a {
  display: block;
  padding: 8px 10px;
  color: var(--ink);
  border-bottom: 2px solid var(--paper2);
  font-size: 12px;
}
.suggestions a:last-child { border-bottom: 0; }
.suggestions a:hover, .suggestions a.sel { background: var(--sun); color: var(--ink); }
.suggestions .kind {
  display: inline-block;
  font-size: 9px;
  padding: 2px 4px;
  margin-right: 6px;
  background: var(--navy);
  color: var(--white);
}

/* -------------------------------------------------------------------- nav */
.tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 14px 0;
}
.tabs a {
  font-family: var(--font-pixel);
  font-size: 10px;
  padding: 10px 12px;
  background: var(--ink2);
  color: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  text-decoration: none;
}
.tabs a img { width: 16px; height: 16px; }
.tabs a:hover { background: var(--grey2); color: var(--white); text-decoration: none; }
.tabs a.active {
  background: var(--grass2);
  color: var(--white);
  border-color: var(--ink);
  box-shadow: 2px 2px 0 var(--ink), inset 0 0 0 2px var(--grass3);
}

/* ----------------------------------------------------------------- layout */
.layout { display: block; }
.sidebar { display: flex; flex-direction: column; gap: 14px; }

.panel {
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow);
  padding: 16px;
}
.panel.tight { padding: 12px; }
.panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--ink);
  background: var(--sun);
  border: 3px solid var(--ink);
  margin: -16px -16px 14px;
  padding: 9px 12px;
}
.panel-title img { width: 16px; height: 16px; }
.panel-title .count { margin-left: auto; font-size: 9px; color: var(--ink2); }

.sidebar .panel { padding: 0; }
.sidebar .panel-title { margin: 0; }
.side-list { list-style: none; margin: 0; padding: 6px; }
.side-list li { margin-bottom: 4px; }
.side-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  color: var(--ink);
  font-size: 12px;
  border: 2px solid transparent;
}
.side-list a img { width: 16px; height: 16px; flex: none; }
.side-list a:hover { background: var(--sun); border-color: var(--ink); text-decoration: none; }
.side-list a.active { background: var(--grass); border-color: var(--ink); }
.side-list .n { margin-left: auto; font-size: 10px; color: var(--grey2); }

/* ------------------------------------------------------------------ hero */
.hero {
  position: relative;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow);
  background: var(--sky);
  margin-bottom: 16px;
  overflow: hidden;
}
.hero img { display: block; width: 100%; height: auto; }
.hero .tag {
  position: absolute;
  left: 14px;
  bottom: 12px;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-pixel);
  font-size: 9px;
  padding: 7px 10px;
  border: 2px solid var(--paper);
}

/* ----------------------------------------------------------------- tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.tile {
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  padding: 12px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.tile img { width: 32px; height: 32px; flex: none; }
.tile .num { font-family: var(--font-pixel); font-size: 16px; color: var(--tomato2); }
.tile .lbl { font-size: 10px; color: var(--grey2); text-transform: uppercase; letter-spacing: .12em; }
.tile.green .num { color: var(--grass2); }
.tile.blue  .num { color: var(--navy); }
.tile.teal  .num { color: var(--teal2); }

/* ----------------------------------------------------------------- cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.card {
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.card:hover { box-shadow: var(--shadow); }
.card .chead { display: flex; align-items: center; gap: 8px; }
.card .chead img { width: 16px; height: 16px; }
.card .card-title { font-family: var(--font-pixel); font-size: 11px; line-height: 1.5; }
.card .card-title a { color: var(--ink); }
.card .card-title a:hover { color: var(--tomato2); }
.card p { margin: 0; font-size: 12px; color: var(--ink2); }
.card .meta { font-size: 10px; color: var(--grey2); display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; }
.card .row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ------------------------------------------------------------ book cards */
.bookcard { flex-direction: row; align-items: flex-start; gap: 12px; }
.bookcard .cover {
  width: 120px;
  flex: none;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  background: var(--paper2);
  image-rendering: pixelated;
}
.bookcard .cover.large { width: 240px; }
.bookcard .info { display: flex; flex-direction: column; gap: 6px; min-width: 0; }

/* --------------------------------------------------------------- formulas */
.formula-group { margin-bottom: 18px; }
.formula-group > h3 {
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--sun);
  margin: 0 0 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--grey2);
  display: flex;
  align-items: center;
  gap: 8px;
}
.formula-group > h3 .n { font-size: 9px; color: var(--grey); }
.formulas { display: flex; flex-direction: column; gap: 10px; }
.formula {
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.formula .fname { font-family: var(--font-pixel); font-size: 11px; line-height: 1.5; }
.formula .expr {
  background: var(--paper2);
  border-left: 6px solid var(--grass2);
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink);
  overflow-x: auto;
}
.formula .sym { font-size: 11px; color: var(--grey2); }
.formula .how { font-size: 12px; color: var(--ink2); line-height: 1.7; }
.formula .how p, .formula .ex p { margin: 0 0 6px; }
.formula .how p:last-child, .formula .ex p:last-child { margin-bottom: 0; }
.formula .how a, .formula .ex a { color: var(--soil2); }
.formula .ex {
  font-size: 12px;
  color: var(--ink);
  background: var(--cream);
  border: 2px dashed var(--ink);
  padding: 8px 10px;
  line-height: 1.6;
}
.formula .ex b { font-family: var(--font-pixel); font-size: 9px; color: var(--soil2); }
.formula .units { font-size: 10px; color: var(--tomato2); }

/* ----------------------------------------------------------------- chips */
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  padding: 4px 7px;
  background: var(--paper2);
  color: var(--ink2);
  border: 2px solid var(--ink);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.chip.green { background: var(--grass3); }
.chip.blue { background: var(--silver); }
.chip.sun { background: var(--sun); }
.chip.red { background: var(--tomato); color: var(--white); }
.chip a { color: inherit; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-pixel);
  font-size: 10px;
  padding: 9px 12px;
  background: var(--grass2);
  color: var(--white);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--grass); color: var(--ink); text-decoration: none; }
.btn:active { transform: translate(2px, 2px); box-shadow: none; }
.btn.sun { background: var(--sun); color: var(--ink); }
.btn.sun:hover { background: var(--orange); }
.btn.blue { background: var(--navy); }
.btn.blue:hover { background: var(--sky2); }
.btn.ghost { background: var(--paper2); color: var(--ink); }
.btn.ghost:hover { background: var(--sun); }
.btn[disabled], .btn.disabled {
  background: var(--grey2);
  color: var(--silver);
  cursor: not-allowed;
  box-shadow: none;
  pointer-events: none;
}
.btn img { width: 16px; height: 16px; }

/* ------------------------------------------------------------------ prose */
.prose { max-width: 74ch; }
.prose h2 { color: var(--tomato2); border-bottom: 3px solid var(--paper2); padding-bottom: 6px; margin-top: 28px; }
.prose h3 { color: var(--navy); margin-top: 22px; }
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { margin: 0 0 14px; padding-left: 26px; }
.prose li { margin-bottom: 6px; }
.prose blockquote {
  margin: 0 0 14px;
  padding: 10px 14px;
  background: var(--cream);
  border-left: 6px solid var(--sun2);
}
.prose pre {
  background: var(--ink2);
  color: var(--cream);
  padding: 12px;
  overflow-x: auto;
  border: 3px solid var(--ink);
}
.prose code { background: var(--paper2); padding: 1px 4px; }
.prose pre code { background: none; padding: 0; color: inherit; }
.prose .md-table { border-collapse: collapse; margin: 0 0 16px; width: 100%; font-size: 12px; }
.prose .md-table th, .prose .md-table td {
  border: 2px solid var(--ink);
  padding: 6px 8px;
  text-align: left;
  background: var(--white);
}
.prose .md-table th { background: var(--sun); }
.prose .wikilink { color: var(--tomato2); border-bottom: 2px dotted var(--tomato2); }
.prose .wikilink.missing { color: var(--grey2); border-bottom: 2px dotted var(--grey2); }
.prose img { max-width: 100%; }

.callout {
  border: 3px solid var(--ink);
  background: var(--cream);
  padding: 12px 14px;
  margin: 0 0 16px;
  box-shadow: var(--shadow-sm);
}
.callout.safety { background: #ffd7d7; }
.callout.tip { background: #dff5d0; }

/* ---------------------------------------------------------------- article */
.article-head { border-bottom: 3px solid var(--paper2); margin-bottom: 16px; padding-bottom: 14px; }
.kicker { font-size: 10px; text-transform: uppercase; letter-spacing: .16em; color: var(--grey2); }
.byline { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; font-size: 11px; color: var(--grey2); }
.byline img { width: 16px; height: 16px; }

/* ----------------------------------------------------------------- table */
.table { width: 100%; border-collapse: collapse; font-size: 12px; color: var(--ink); }
.table th, .table td { border: 2px solid var(--ink); padding: 7px 9px; text-align: left; background: var(--white); }
.table th { background: var(--sun); font-family: var(--font-pixel); font-size: 9px; }
.table tr:nth-child(even) td { background: var(--paper2); }
.table-wrap { overflow-x: auto; }

/* ----------------------------------------------------------------- forms */
.field { margin-bottom: 14px; }
.field label { display: block; font-family: var(--font-pixel); font-size: 9px; color: var(--ink); margin-bottom: 6px; letter-spacing: .1em; }
.field input[type=text], .field input[type=url], .field input[type=file],
.field textarea, .field select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 13px;
  padding: 9px 10px;
  background: var(--white);
  color: var(--ink);
  border: 3px solid var(--ink);
  outline: none;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--grass2); }
.field .hint { font-size: 11px; color: var(--grey2); margin-top: 5px; }

/* ---------------------------------------------------------------- footer */
.statusbar {
  margin-top: 22px;
  background: var(--ink2);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow);
  padding: 9px 12px;
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 10px;
  color: var(--grey);
}
.statusbar .dot { width: 10px; height: 10px; background: var(--grass); box-shadow: var(--shadow-sm); display: inline-block; }
.statusbar b { color: var(--cream); }

/* ------------------------------------------------------------- utilities */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.muted { color: var(--grey2); }
.small { font-size: 11px; }
.center { text-align: center; }
.mt { margin-top: 16px; }
.mb { margin-bottom: 16px; }
.nowrap { white-space: nowrap; }

.empty {
  border: 3px dashed var(--grey2);
  padding: 26px;
  text-align: center;
  color: var(--grey2);
  font-size: 12px;
  background: var(--paper2);
}

.tabs-sub { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.tabs-sub a {
  font-family: var(--font-pixel);
  font-size: 9px;
  padding: 8px 10px;
  background: var(--paper2);
  color: var(--ink);
  border: 3px solid var(--ink);
}
.tabs-sub a.active { background: var(--navy); color: var(--white); }
.tabs-sub a:hover { text-decoration: none; background: var(--sun); }

.cover-full {
  width: 120px;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow);
  display: block;
}

.reader-text {
  white-space: pre-wrap;
  font-family: "DejaVu Sans Mono", monospace;
  font-size: 13px;
  line-height: 1.7;
  max-height: 70vh;
  overflow: auto;
  background: var(--white);
  border: 3px solid var(--ink);
  padding: 14px;
}

.split { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 18px; align-items: start; }
@media (max-width: 620px) { .split { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------- mobile */
@media (max-width: 900px) {
  .layout { display: block; }
  .split { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 13px; }
  .wrap { padding: 10px 10px 48px; }
  h1 { font-size: 15px; }
  .topbar { gap: 10px; padding: 10px; }
  .brand img { height: 42px; }
  .brand .name { font-size: 11px; }
  .searchbox { flex-basis: 100%; order: 3; max-width: none; }
  .tabs { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .tabs a { flex: none; }
  .cards { grid-template-columns: 1fr; }
  .bookcard .cover { width: 120px; }
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .panel { padding: 12px; }
  .panel-title { margin: -12px -12px 12px; }
  .btn { padding: 11px 12px; }
  .tabs-sub a { padding: 10px 11px; }
}

/* ---- topic cards -------------------------------------------------------- */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.card.topic-card { padding: 12px; }
.card.topic-card .card-title { margin-top: 4px; }

/* ---- conversions accordions -------------------------------------------- */
details.acc {
  background: var(--paper);
  color: var(--ink);
  border: var(--border);
  box-shadow: var(--shadow);
  margin: 0 0 14px;
}
details.acc > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  font-weight: 700;
  letter-spacing: .04em;
  background: var(--silver);
  border-bottom: 2px solid var(--ink);
  user-select: none;
}
details.acc > summary::-webkit-details-marker { display: none; }
details.acc > summary:before {
  content: "+";
  display: inline-block;
  width: 16px;
  font-weight: 700;
}
details.acc[open] > summary:before { content: "-"; }
details.acc > summary img { width: 20px; height: 20px; image-rendering: pixelated; }
details.acc > summary:hover { background: var(--sun); }
.acc-body { padding: 12px; }
.acc-body h4 {
  margin: 16px 0 8px;
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.acc-body h4:first-child { margin-top: 0; }


/* ---- sources and provenance -------------------------------------------- */
.sources-panel { border-left: 6px solid var(--cyan); }
.source-list { display: flex; flex-direction: column; gap: 10px; }
.source-list.scroll { max-height: 72vh; overflow-y: auto; padding: 2px 8px 2px 2px; }
.source-legend a.source-kind { text-decoration: none; }
.panel .source-legend a.source-kind { color: var(--white); text-decoration: none; }
.source-legend a.source-kind:hover { filter: brightness(1.12); }
.source-row {
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-sm);
  padding: 10px 12px;
}
.source-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.source-title { font-weight: 700; color: var(--navy); }
.source-author { font-size: 11px; color: var(--grey2); }
.source-kind {
  display: inline-block;
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: .08em;
  padding: 4px 6px;
  border: 2px solid var(--ink);
  color: var(--white);
  background: var(--grey2);
  white-space: nowrap;
}
.source-kind.kind-ai-generated { background: var(--plum); }
.source-kind.kind-ai-organized { background: var(--teal2); }
.source-kind.kind-book { background: var(--soil); }
.source-kind.kind-manual { background: var(--tomato2); }
.source-kind.kind-forum { background: var(--orange); color: var(--ink); }
.source-kind.kind-website { background: var(--sky2); }
.source-kind.kind-archive { background: var(--navy); }
.source-role { font-size: 9px; background: var(--paper2); color: var(--ink); }
.source-foot { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.prov {
  display: inline-block;
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: .08em;
  padding: 4px 6px;
  border: 2px solid var(--ink);
  color: var(--white);
  background: var(--plum);
}
.prov-ai-organized { background: var(--teal2); }
.prov-book { background: var(--soil); }
.prov-manual { background: var(--tomato2); }
.prov-forum { background: var(--orange); color: var(--ink); }
.prov-website { background: var(--sky2); }


.source-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 12px 0; }
.source-legend .small { flex: 0 1 100%; margin: -4px 0 4px; }

/* ---- book reader ------------------------------------------------------- */
.reader-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  background: var(--paper2);
  color: var(--ink);
  border: 3px solid var(--ink);
  padding: 10px;
}
.reader-nav, .reader-search, .reader-display { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.reader-nav { flex: 1 1 420px; }
.reader-search { flex: 1 1 300px; }
.reader-search input {
  min-width: 150px;
  flex: 1 1 180px;
  font-family: var(--font-body);
  font-size: 12px;
  padding: 8px 9px;
  border: 3px solid var(--ink);
  background: var(--white);
  color: var(--ink);
}
.reader-jump select {
  font-family: var(--font-body);
  font-size: 12px;
  padding: 7px 8px;
  border: 3px solid var(--ink);
  background: var(--white);
  color: var(--ink);
}
.btn.disabled { opacity: .45; cursor: not-allowed; }
.reader-shell { display: grid; grid-template-columns: 245px minmax(0, 1fr); gap: 14px; align-items: start; }
.reader-toc { position: sticky; top: 10px; max-height: calc(100vh - 30px); overflow: auto; }
.reader-page-list { list-style: none; margin: 0; padding: 0; counter-reset: page; }
.reader-page-list li { margin: 0 0 4px; }
.reader-page-list a {
  display: flex;
  gap: 7px;
  align-items: baseline;
  font-size: 11px;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--paper2);
  padding: 5px 7px;
  line-height: 1.35;
}
.reader-page-list a:hover, .reader-page-list a.active { background: var(--sun); border-color: var(--ink); text-decoration: none; }
.reader-page-list .n {
  font-family: var(--font-pixel);
  font-size: 8px;
  color: var(--tomato2);
  min-width: 22px;
  text-align: right;
}
.reader-main { min-width: 0; }
.reader-toolbar { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.reader-text.reader-page {
  max-height: none;
  overflow: visible;
  font-size: 14px;
  line-height: 1.75;
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  padding: 20px;
}
.reader-text.reader-page.font-small { font-size: 12px; }
.reader-text.reader-page.font-normal { font-size: 14px; }
.reader-text.reader-page.font-large { font-size: 17px; line-height: 1.8; }
.reader-text.reader-page.theme-sepia { background: #f4e4c1; color: #2d2318; }
.reader-text.reader-page.theme-dark { background: #1d2028; color: #e9e2ce; border-color: #0c0d11; }
.reader-text.reader-page.theme-dark mark { background: #8a5a00; color: #fff7dc; }
.reader-text.reader-page mark { background: var(--sun); color: var(--ink); padding: 0 2px; }
.reader-bottom-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.reader-hit {
  display: block;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--ink);
  padding: 8px 10px;
}
.reader-hit:hover { background: var(--sun); text-decoration: none; }
.reader-hits .chip { margin-left: 6px; }
@media (max-width: 900px) {
  .reader-shell { grid-template-columns: 1fr; }
  .reader-toc { position: static; max-height: 280px; }
  .reader-text.reader-page { padding: 12px; }
}

/* ---- formula calculators ------------------------------------------------ */
.calc {
  margin-top: 12px;
  padding: 10px;
  background: var(--paper);
  color: var(--ink);
  border: 3px dashed var(--ink);
}
.calc-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: .08em;
  margin-bottom: 8px;
}
.calc-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
}
.calc-fields label { font-size: 11px; }
.calc-name { font-family: var(--font-pixel); font-size: 9px; color: var(--tomato2); }
.calc-fields input {
  width: 100%;
  margin-top: 3px;
  padding: 7px 8px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--ink);
  background: var(--white);
  border: 2px solid var(--ink);
}
.calc-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 9px; }
.calc-out {
  font-family: var(--font-pixel);
  font-size: 10px;
  background: var(--ink);
  color: var(--cream);
  padding: 7px 8px;
  border: 2px solid var(--ink);
}
.calc-warning { margin: 8px 0 0; }

/* ---- usability and information architecture --------------------------- */
.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  transform: translateY(-160%);
  padding: 10px 14px;
  background: var(--sun);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow);
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }
#main-content:focus { outline: none; }

.wrap { max-width: 1320px; }
.layout { min-width: 0; }
main { min-width: 0; }
.topbar { gap: 12px; }
.brand, .brand:hover { text-decoration: none; }
.tabs a {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .02em;
  text-transform: uppercase;
}
.panel-title { flex-wrap: wrap; line-height: 1.35; text-shadow: none; font-family: var(--font-body); font-size: 13px; font-weight: 800; letter-spacing: .025em; }
.panel-title-text { flex: 1 1 180px; min-width: 0; }
.panel-title .count { flex: 0 0 auto; margin-left: auto; white-space: nowrap; font-family: var(--font-body); font-size: 12px; font-weight: 600; letter-spacing: 0; }
.card .card-title { font-family: var(--font-body); font-size: 15px; font-weight: 750; line-height: 1.4; }
.card .meta { font-size: 12px; }
.chip { font-size: 11px; font-weight: 650; letter-spacing: .04em; }
.btn {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .025em;
}
.tabs-sub a { font-family: var(--font-body); font-size: 12px; font-weight: 700; }
.panel-title { font-size: 12px; }
.small { font-size: 13px; }
.muted { color: #555d6a; }
.card p, .formula .how, .formula .ex { font-size: 14px; }
.table { font-size: 14px; }
.table th { font-size: 11px; }
.kicker { font-size: 12px; }
.byline { font-size: 13px; }
.field label { font-family: var(--font-body); font-size: 12px; font-weight: 750; }
.field input[type=text], .field input[type=url], .field input[type=file],
.field textarea, .field select { font-size: 15px; }

/* Links read as links on both dark and light surfaces, even before hover. */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}
.panel a:not(.btn), .source-row a:not(.btn), .callout a {
  color: var(--navy);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 2px;
}
.panel a:not(.btn):hover, .source-row a:not(.btn):hover, .callout a:hover {
  color: var(--tomato2);
}
.panel .tabs-sub a { color: var(--ink); text-decoration: none; }
.panel .tabs-sub a.active { color: var(--white); }
.panel .tabs-sub a:hover { color: var(--ink); }
.card .card-title a { color: var(--navy); text-decoration: underline; text-underline-offset: 2px; }
.card .card-title a:hover { color: var(--tomato2); }
.side-list a { text-decoration: underline; text-underline-offset: 2px; }
.side-list a:hover { color: var(--ink); }
.chip a { text-decoration: underline; text-underline-offset: 2px; }
.btn, .tabs a, .tabs-sub a { text-decoration: none; }
.prose a, .formula .how a, .formula .ex a { text-decoration: underline; text-underline-offset: 2px; }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 9px;
  margin: 0 0 14px;
  color: var(--grey);
  font-size: 13px;
}
.breadcrumbs a { color: var(--cream); font-weight: 650; }
.breadcrumbs .current { color: var(--paper); font-weight: 750; }
.breadcrumbs .separator { color: var(--grey); }
.page-intro { max-width: 78ch; }
.page-intro h1 { margin-bottom: 8px; }
.page-intro p { margin: 0; }
.home-intro { max-width: 76ch; }
.home-intro h1 { color: var(--cream); font-family: var(--font-body); font-size: clamp(24px, 3vw, 34px); line-height: 1.2; letter-spacing: 0; text-shadow: none; margin-bottom: 8px; }
.home-intro p { margin: 0; color: var(--paper2); font-size: 16px; }
.vehicle-title { margin: 6px 0 16px; color: var(--ink); font-family: var(--font-body); font-size: clamp(27px, 4vw, 40px); line-height: 1.15; letter-spacing: 0; text-shadow: none; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 12px; }
.section-heading h2 { margin: 0; color: var(--cream); font-family: var(--font-body); font-size: 17px; font-weight: 750; letter-spacing: 0; }
.home-search { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: stretch; }
.home-search input {
  min-width: 0;
  width: 100%;
  padding: 12px;
  border: 3px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  font: 16px/1.4 var(--font-body);
}
.card > .panel-title { margin: -12px -12px 2px; }

.equipment-types { display: grid; grid-template-columns: repeat(auto-fit, minmax(245px, 1fr)); gap: 14px; }
.equipment-type-card { min-height: 150px; min-width: 0; }
.equipment-type-card .panel-title { align-items: flex-start; overflow-wrap: anywhere; }
.equipment-type-card .panel-title .count { margin-left: auto; }
.equipment-type-card .type-link {
  align-self: flex-start;
  max-width: 100%;
  margin-top: auto;
  white-space: normal;
  text-align: left;
}
.equipment-brand-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.equipment-brand-card { min-width: 0; }
.equipment-brand-card .card-title, .equipment-model-card .card-title { margin: 0; }
.equipment-brand-card.featured { border-left: 7px solid var(--grass2); }
.equipment-brand-card .brand-models { display: flex; flex-wrap: wrap; gap: 6px; }
.equipment-model-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.equipment-model-card { min-height: 170px; }
.equipment-model-card .model-link { align-self: flex-start; margin-top: auto; }
.planned-brands { margin-top: 14px; }
.planned-brands > summary {
  cursor: pointer;
  padding: 12px 14px;
  background: var(--paper2);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  font-weight: 750;
}
.planned-brands > summary:hover { background: var(--sun); }
.equipment-crumb-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.equipment-overview { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(270px, .8fr); gap: 16px; align-items: start; }
.equipment-section { margin-top: 18px; }
.equipment-section > h2 { color: var(--ink); font-family: var(--font-body); font-size: 19px; letter-spacing: 0; margin-bottom: 12px; }
.manual-card { display: flex; flex-direction: column; gap: 9px; }
.manual-card .cover { width: 84px; }
.manual-card .manual-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.vehicle-notes { display: flex; flex-direction: column; gap: 8px; }
.equipment-spec-panel h2 { margin: 0 0 12px; color: var(--ink); font-family: var(--font-body); font-size: 19px; letter-spacing: 0; }
.vehicle-note-link {
  display: block;
  padding: 10px 12px;
  color: var(--navy);
  background: var(--white);
  border: 2px solid var(--paper2);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.vehicle-note-link:hover { background: var(--sun); color: var(--tomato2); }

@media (max-width: 760px) {
  .equipment-overview { grid-template-columns: 1fr; }
  .equipment-types, .equipment-brand-grid, .equipment-model-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  body { font-size: 15px; }
  .topbar .badge { font-size: 8px; }
  .tabs { gap: 6px; }
  .tabs a { padding: 9px 10px; }
  .statusbar { font-size: 11px; }
  .home-search { grid-template-columns: 1fr; }
  .home-search .btn { justify-content: center; }
}

/* ---- organised depots -------------------------------------------------- */
.depot-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.depot-card { min-height: 170px; }
.depot-card .card-title { margin: 2px 0 0; }
.depot-card p { margin: 4px 0 0; }
.depot-card .meta { margin-top: auto; padding-top: 6px; }
.depot-hero { border-left: 8px solid var(--grass2); }
.depot-head { display: flex; align-items: flex-start; gap: 16px; }
.depot-icon {
  width: 64px;
  height: 64px;
  flex: none;
  padding: 8px;
  background: var(--paper2);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-sm);
  image-rendering: pixelated;
}
.depot-head h1 { margin: 2px 0 4px; color: var(--ink); font-family: var(--font-body); font-size: clamp(26px, 4vw, 38px); line-height: 1.15; letter-spacing: 0; text-shadow: none; }
.depot-head p { margin: 8px 0; max-width: 78ch; color: var(--ink2); }
.depot-head .scientific { margin: 0 0 4px; color: var(--grey2); font-size: 15px; }
.depot-subhead {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 18px 0 10px;
  padding-bottom: 6px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0;
  border-bottom: 2px solid var(--paper2);
}
.depot-subhead .count { margin-left: auto; color: var(--grey2); font-size: 12px; font-weight: 600; }
.source-book { align-items: flex-start; }
.source-book .cover { width: 96px; }
.source-book .info { gap: 7px; }
@media (max-width: 560px) {
  .depot-head { flex-direction: column; }
  .source-book { flex-direction: column; }
  .source-book .cover { width: 120px; }
}

/* ---- collapsible index groups ----------------------------------------- */
.index-group { padding: 0; overflow: hidden; }
.index-group > summary.index-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  background: var(--paper2);
  border-bottom: 0;
  user-select: none;
}
.index-group[open] > summary.index-summary { border-bottom: 3px solid var(--ink); }
.index-group > summary.index-summary::-webkit-details-marker { display: none; }
.index-summary img { width: 34px; height: 34px; image-rendering: pixelated; flex: none; }
.index-summary .index-name { flex: 1; color: var(--ink); font-weight: 850; letter-spacing: .04em; }
.index-summary .count { flex: none; }
.index-summary .index-arrow {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  font-weight: 900;
  line-height: 1;
}
.index-group[open] .index-arrow { background: var(--sun); transform: rotate(45deg); }
.index-body { padding: 14px 16px 18px; }
.index-body .depot-subhead:first-child { margin-top: 2px; }

/* ---- kitchen index & chapter search ----------------------------------- */
.home-search select {
  min-width: 0;
  padding: 12px 14px;
  border: 3px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-weight: 750;
}
.kitchen-book-list { display: flex; flex-direction: column; gap: 2px; max-height: 62vh; overflow: auto; }
.kitchen-book-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(120px, .45fr) auto;
  gap: 10px;
  align-items: center;
  padding: 7px 9px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--paper2);
}
.kitchen-book-row:hover { background: var(--sun); }
.kitchen-book-title { font-weight: 650; }
.kitchen-book-meta { color: var(--grey2); font-size: 13px; }
.chapter-hit { border: 2px solid var(--paper2); border-left: 6px solid var(--sun2); padding: 10px 12px; background: var(--white); }
.chapter-head { display: flex; align-items: center; gap: 12px; }
.chapter-head > img { width: 46px; height: 64px; object-fit: cover; border: 2px solid var(--ink); image-rendering: pixelated; flex: none; }
.chapter-head > div { flex: 1; min-width: 0; }
.chapter-snip { margin: 8px 0 0; color: var(--ink2); }
.chapter-snip mark { background: var(--sun); color: var(--ink); padding: 0 2px; }
.source-book[hidden], .kitchen-book-row[hidden] { display: none; }
@media (max-width: 620px) {
  .kitchen-book-row { grid-template-columns: 1fr auto; }
  .kitchen-book-meta { grid-column: 1 / -1; }
  .chapter-head { flex-wrap: wrap; }
}

/* ---- submissions and admin review -------------------------------------- */
.honeypot {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.field-error {
  margin-top: 5px;
  padding: 5px 7px;
  background: #ffd7d7;
  border: 2px solid var(--ink);
  color: var(--ink);
  font-size: 11px;
  font-weight: 700;
}
.request-form { max-width: 760px; }
.admin-login { max-width: 620px; }
.admin-search {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.admin-search input[type=search] {
  flex: 1;
  min-width: 220px;
  border: 3px solid var(--ink);
  background: var(--paper2);
  color: var(--ink);
  padding: 9px 10px;
  font-family: var(--font-body);
  font-size: 13px;
  box-shadow: var(--shadow-sm);
}