/* ==========================================================================
   Manual / book reader
   Dark page chrome + ivory-ink reading surface (regardless of theme).
   Route: #/manual, #/manual/:folderId, #/manual/:folderId/:objectId
   ========================================================================== */

.bp-root {
  height: 100%;
  display: grid;
  grid-template-columns: 260px 1fr;
  background: var(--bg0);
  color: var(--ink);
  font-family: var(--serif);
  position: relative;
}

/* ---- TOC ---- */

.bp-toc {
  border-right: 1px solid var(--line);
  padding: 48px 26px 32px;
  overflow: auto;
  background: var(--bg0);
}

.bp-toc .kicker {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 14px;
}

.bp-toc h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-style: italic;
  font-weight: 400;
  margin: 0 0 28px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.bp-chap {
  margin-bottom: 22px;
}

.bp-chap .ch {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mid);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

.bp-chap .ch.active {
  color: var(--accent);
  border-color: var(--accent);
}

.bp-chap ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bp-chap ol li {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  color: var(--ink-low);
  padding: 4px 0;
  display: flex;
  justify-content: space-between;
  line-height: 1.35;
  cursor: pointer;
}

.bp-chap ol li:hover {
  color: var(--ink-mid);
}

.bp-chap ol li.active {
  color: var(--ink);
}

.bp-chap ol li.active::before {
  content: '→';
  color: var(--accent);
  margin-right: 6px;
  font-style: normal;
}

.bp-chap ol li .label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex: 1 1 auto;
}

.bp-chap ol li .p {
  font-family: var(--mono);
  font-style: normal;
  font-size: 9px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  margin-left: 10px;
  flex-shrink: 0;
}

/* ---- Stage ---- */

.bp-stage {
  overflow: auto;
  padding: 48px 40px 60px;
  background: radial-gradient(ellipse at top, var(--bg1), var(--bg0) 70%);
  position: relative;
}

.bp-ctrl {
  position: absolute;
  top: 20px;
  right: 32px;
  display: flex;
  gap: 18px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-low);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  z-index: 2;
}

.bp-ctrl span {
  cursor: pointer;
}

.bp-ctrl span:hover {
  color: var(--ink-mid);
}

.bp-ctrl .on {
  color: var(--accent);
}

.bp-ctrl .on:hover {
  color: var(--accent);
}

/* ---- Ivory page (scoped light override) ---- */

.bp-page {
  width: 680px;
  max-width: 100%;
  margin: 0 auto;
  background: oklch(0.95 0.015 80);
  color: oklch(0.20 0.01 60);
  padding: 80px 96px 120px;
  font-family: 'Source Serif 4', Georgia, serif;
  box-shadow:
    0 40px 80px rgba(0, 0, 0, 0.45),
    0 20px 40px rgba(0, 0, 0, 0.3);
  position: relative;
}

.bp-page .folio {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: oklch(0.4 0.01 60);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
}

.bp-page h1.chap {
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  text-align: center;
  margin: 0 0 4px;
  color: oklch(0.4 0.01 60);
}

.bp-page .chapnum {
  font-family: 'Source Serif 4', serif;
  font-size: 48px;
  font-style: italic;
  font-weight: 400;
  text-align: center;
  color: oklch(0.18 0.01 60);
  margin: 0 0 60px;
  line-height: 1.1;
}

.bp-page h2.sec {
  font-family: 'Source Serif 4', serif;
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0 0 6px;
  line-height: 1.15;
  color: oklch(0.20 0.01 60);
}

.bp-page h2.sec small {
  display: block;
  font-family: 'Source Serif 4', serif;
  font-size: 15px;
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0;
  color: oklch(0.4 0.01 60);
  margin-top: 4px;
}

.bp-page .prose {
  font-family: 'Source Serif 4', serif;
  font-size: 16px;
  line-height: 1.75;
  color: oklch(0.22 0.01 60);
  text-wrap: pretty;
  max-width: 54ch;
  margin-top: 32px;
}

.bp-page .prose p {
  margin: 0 0 1em;
}

.bp-page .prose p.lead::first-letter {
  font-family: 'Source Serif 4', serif;
  font-size: 56px;
  float: left;
  line-height: 0.9;
  padding: 6px 10px 0 0;
  color: oklch(0.55 0.13 40);
  font-weight: 500;
}

.bp-page .prose q {
  font-style: italic;
  color: oklch(0.3 0.01 60);
  quotes: '\201C' '\201D';
  background: oklch(0.92 0.04 75);
  padding: 0 3px;
}

.bp-page .prose q::before { content: open-quote; }
.bp-page .prose q::after  { content: close-quote; }

/* Block citations — keep block form, tune to ivory tone. */
.bp-page .prose blockquote,
.bp-page .prose blockquote.inserted-highlight {
  margin: 1.5em 0;
  padding: 12px 18px;
  border-left: 3px solid oklch(0.68 0.13 40);
  background: oklch(0.92 0.04 75);
  color: oklch(0.28 0.01 60);
  font-style: italic;
  font-size: 15.5px;
  line-height: 1.7;
}

.bp-page .prose blockquote p {
  margin: 0 0 0.5em;
}

.bp-page .prose blockquote p:last-child {
  margin-bottom: 0;
}

.bp-page .prose blockquote cite {
  display: block;
  margin-top: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: oklch(0.45 0.01 60);
}

.bp-page .prose strong {
  font-weight: 600;
  color: oklch(0.18 0.01 60);
}

.bp-page .prose em {
  font-style: italic;
}

.bp-page hr {
  border: 0;
  text-align: center;
  margin: 48px 0;
  color: oklch(0.5 0.01 60);
}

.bp-page hr::before {
  content: '· · ·';
  letter-spacing: 0.5em;
  font-size: 14px;
}

/* ---- Next section preview ---- */

.bp-nextsec {
  margin-top: 64px;
  padding-top: 36px;
  border-top: 1px solid oklch(0.82 0.02 80);
  cursor: pointer;
}

.bp-nextsec h2.sec {
  font-size: 26px;
  color: oklch(0.35 0.01 60);
}

.bp-nextsec h2.sec small {
  color: oklch(0.5 0.01 60);
}

.bp-nextsec .prose {
  color: oklch(0.45 0.01 60);
  font-size: 15px;
  margin-top: 18px;
}

.bp-nextsec:hover h2.sec {
  color: oklch(0.22 0.01 60);
}

/* ---- Empty state ---- */

.bp-empty {
  grid-column: 1 / -1;
  max-width: 540px;
  margin: 120px auto;
  padding: 0 32px;
  text-align: center;
}

.bp-empty .kicker {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 14px;
}

.bp-empty h3 {
  font-family: var(--serif);
  font-size: 28px;
  font-style: italic;
  font-weight: 400;
  margin: 0 0 18px;
  color: var(--ink);
}

.bp-empty-body {
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-mid);
}

/* ---- Print ---- */

@media print {
  .sidebar,
  .bp-toc,
  .bp-ctrl {
    display: none !important;
  }
  .bp-page {
    box-shadow: none !important;
    margin: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
  }
  body,
  .bp-root,
  .bp-stage {
    background: white !important;
  }
  .bp-root {
    display: block !important;
    height: auto !important;
  }
}