/* War and Peace on the XRP Ledger — a reading surface over a distributed store. */

:root {
  --ink: #1a1613;
  --ink-soft: #5c534a;
  --ink-faint: #8b8178;
  --paper: #faf7f2;
  --paper-raised: #ffffff;
  --rule: #e2dad0;
  --accent: #7c3f1d;
  --accent-soft: #f0e4d8;
  --ok: #2f6b45;
  --bad: #a33223;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ece5dc;
    --ink-soft: #b3a99e;
    --ink-faint: #857b71;
    --paper: #16130f;
    --paper-raised: #1e1a16;
    --rule: #322b24;
    --accent: #d99b6c;
    --accent-soft: #2a211a;
    --ok: #6fbf8c;
    --bad: #e07a69;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
}

/* ─── scrollbars ───
   The default bars are bright chrome on a dark page. Muted to the page palette
   so they read as part of the paper rather than the browser. */

html {
  scrollbar-width: thin;
  scrollbar-color: var(--rule) transparent;
}

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }

::-webkit-scrollbar-thumb {
  background: var(--rule);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); background-clip: content-box; }
::-webkit-scrollbar-corner { background: transparent; }

/* ─── masthead ─── */

.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper-raised);
  position: sticky;
  top: 0;
  z-index: 10;
}

.masthead-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.1rem 1.5rem 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
}

.brand h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--ink-faint);
  font-style: italic;
}

.tagline {
  margin: 0.35rem 0 0;
  font-size: 0.87rem;
  color: var(--ink-soft);
  max-width: 56ch;
}

.tabs { display: flex; gap: 0.4rem; }

.tab {
  font: inherit;
  font-size: 0.86rem;
  padding: 0.42rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}

.tab.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.netbar {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem 0.7rem;
  font-size: 0.78rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.netbar a { color: var(--ink-faint); }

.net-node { display: inline-flex; align-items: center; gap: 0.35rem; }

.net-node select {
  font: inherit;
  font-size: 0.72rem;
  color: var(--ink-soft);
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.1rem 0.3rem;
  cursor: pointer;
}
.net-sep { opacity: 0.5; }

.net-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-faint);
  flex: none;
}

.net-dot.is-connected { background: var(--ok); }
.net-dot.is-connecting, .net-dot.is-retrying { background: var(--accent); }
.net-dot.is-failed, .net-dot.is-disconnected { background: var(--bad); }

/* ─── layout ─── */

main { max-width: 1180px; margin: 0 auto; padding: 1.5rem; }

.view { display: none; }
.view.is-active { display: block; }

#view-read.is-active {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}

/* ─── contents ─── */

.contents {
  position: sticky;
  top: 7.5rem;
  max-height: calc(100vh - 9rem);
  overflow-y: auto;
  border-right: 1px solid var(--rule);
  padding-right: 1rem;
}

.contents-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  list-style: none;
}

.contents-head::-webkit-details-marker { display: none; }

.contents h2 {
  margin: 0 0 0.2rem;
  font-family: var(--serif);
  font-size: 1rem;
}

.contents-count { font-size: 0.72rem; color: var(--ink-faint); }

.chapter-list { list-style: none; margin: 0.6rem 0 0; padding: 0; }
.book-chapters { list-style: none; margin: 0.15rem 0 0.5rem; padding: 0 0 0 0.5rem; }
.loose { margin-bottom: 0.4rem; }

.book-details { border-bottom: 1px solid var(--rule); }
.book-details:last-child { border-bottom: 0; }

.book-summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.2rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-faint);
  user-select: none;
}

.book-summary::-webkit-details-marker { display: none; }

/* Disclosure triangle, drawn so it can rotate when the book opens. */
.book-summary::before {
  content: '';
  flex: none;
  width: 0;
  height: 0;
  border-left: 4px solid currentColor;
  border-top: 3.5px solid transparent;
  border-bottom: 3.5px solid transparent;
  transition: transform 0.15s ease;
}

.book-details[open] > .book-summary::before { transform: rotate(90deg); }
.book-summary:hover { color: var(--ink); }
.book-details[open] > .book-summary { color: var(--ink-soft); font-weight: 600; }

.book-name { flex: 1; min-width: 0; }

.book-count {
  font-size: 0.66rem;
  letter-spacing: 0;
  color: var(--ink-faint);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.05rem 0.4rem;
}

.chapter-link {
  font: inherit;
  font-size: 0.84rem;
  width: 100%;
  text-align: left;
  padding: 0.24rem 0.45rem;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}

.chapter-link:hover { background: var(--accent-soft); color: var(--ink); }

.chapter-link.is-current {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* ─── page ─── */

.page { min-width: 0; }

.page-status {
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--paper-raised);
  font-size: 0.88rem;
  color: var(--ink-soft);
  font-family: var(--mono);
}

.page-status.is-error { border-color: var(--bad); color: var(--bad); }
.page-status button { margin-top: 0.6rem; }

.chapter-head { border-bottom: 1px solid var(--rule); padding-bottom: 0.9rem; }

.chapter-book {
  margin: 0;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--ink-faint);
}

.chapter-title {
  margin: 0.25rem 0 0.35rem;
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 600;
}

.chapter-meta { margin: 0; font-size: 0.78rem; color: var(--ink-faint); font-family: var(--mono); }

.verify {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  margin: 0.9rem 0 0;
  font-size: 0.78rem;
}

.verify-badge { font-weight: 600; }
.verify-badge.is-ok { color: var(--ok); }
.verify-badge.is-bad { color: var(--bad); }
.verify-digest { color: var(--ink-faint); font-family: var(--mono); font-size: 0.72rem; }

.prose {
  font-family: var(--serif);
  font-size: 1.09rem;
  line-height: 1.72;
  max-width: 68ch;
  margin-top: 1.6rem;
}

.prose p { margin: 0 0 1.05rem; text-align: justify; hyphens: auto; }
.prose p + p { text-indent: 1.4em; }

.inline-heading {
  text-align: center !important;
  text-indent: 0 !important;
  font-variant: small-caps;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

/* ─── sources ─── */

.sources { margin-top: 2.5rem; border-top: 1px solid var(--rule); padding-top: 1.1rem; }

.sources-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: baseline;
  justify-content: space-between;
}

.sources h3 { margin: 0; font-size: 0.9rem; font-weight: 600; }
.raw-toggle { font-size: 0.78rem; color: var(--ink-soft); cursor: pointer; }

.source-list { list-style: none; margin: 0.8rem 0 0; padding: 0; }

.source { padding: 0.3rem 0; border-bottom: 1px solid var(--rule); }

.source-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 0.75rem;
}

.source-index { color: var(--ink-faint); min-width: 3.5rem; }
.source-hash { color: var(--accent); text-decoration: none; }
.source-hash:hover { text-decoration: underline; }
.source-ledger { color: var(--ink-soft); text-decoration: none; }
.source-bytes { color: var(--ink-faint); margin-left: auto; }

.source-raw {
  margin: 0.4rem 0 0.5rem;
  padding: 0.6rem;
  background: var(--accent-soft);
  border-radius: 5px;
  font-family: var(--mono);
  font-size: 0.62rem;
  line-height: 1.5;
  word-break: break-all;
  white-space: pre-wrap;
  color: var(--ink-soft);
  max-height: 9rem;
  overflow-y: auto;
}

.pager { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; }

.pager-btn {
  font: inherit;
  font-size: 0.85rem;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  color: var(--ink);
  cursor: pointer;
}

.pager-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.pager-btn:disabled { opacity: 0.35; cursor: default; }

/* ─── about ─── */

.about { max-width: 78ch; }
.about h2 { font-family: var(--serif); font-size: 1.6rem; margin: 0 0 0.6rem; }
.about h3 { font-family: var(--serif); font-size: 1.15rem; margin: 2.2rem 0 0.6rem; }
.lede { font-size: 1.02rem; color: var(--ink-soft); margin: 0; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
  margin: 1.6rem 0 0;
}

.stat {
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  background: var(--paper-raised);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.stat-value { font-family: var(--serif); font-size: 1.45rem; font-weight: 600; }
.stat-label { font-size: 0.75rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; }

.steps { padding-left: 1.2rem; color: var(--ink-soft); font-size: 0.92rem; }
.steps li { margin-bottom: 0.4rem; }

.chart-note { font-size: 0.82rem; color: var(--ink-faint); margin: 0 0 0.7rem; }

.chart {
  display: flex;
  align-items: flex-end;
  gap: 1px;
  height: 130px;
  padding: 0.5rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--paper-raised);
  overflow-x: auto;
}

.bar {
  flex: 1 0 2px;
  min-width: 2px;
  background: var(--accent);
  opacity: 0.75;
  border-radius: 1px 1px 0 0;
}

.bar:hover { opacity: 1; }

.facts { width: 100%; border-collapse: collapse; font-size: 0.87rem; }
.facts th, .facts td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
.facts th { width: 34%; font-weight: 600; color: var(--ink-soft); }
.facts code { font-family: var(--mono); font-size: 0.74rem; word-break: break-all; }
.facts a { color: var(--accent); }

.footnote { margin-top: 2rem; font-size: 0.8rem; color: var(--ink-faint); }
.footnote a { color: var(--ink-soft); }

.fatal { max-width: 40rem; margin: 4rem auto; padding: 0 1.5rem; font-family: var(--sans); }

/* ─── narrow screens ─── */

@media (max-width: 860px) {
  /* A sticky masthead ate a third of a phone screen; here the page scrolls it away. */
  .masthead { position: static; }
  .masthead-inner { padding: 0.9rem 1.1rem 0.7rem; align-items: center; }
  .netbar { padding: 0 1.1rem 0.6rem; }
  .tagline { display: none; }
  .brand h1 { font-size: 1.2rem; }
  .brand-sub { display: block; font-size: 0.82rem; }

  /* The account is 34 characters of base58 — it wraps the status bar onto a second
     line and says nothing at a glance. Truncate, keep it tappable. */
  .netbar { flex-wrap: nowrap; }
  #net-account { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
  #net-status { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

  main { padding: 1.1rem; }

  #view-read.is-active { grid-template-columns: 1fr; gap: 1.2rem; }

  /* Contents collapses behind its heading instead of holding a scroll area of its own —
     two nested scrollbars on a phone is one too many. */
  .contents {
    position: static;
    max-height: none;
    overflow: visible;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding: 0 0 0.7rem;
  }

  .contents-head {
    cursor: pointer;
    padding: 0.2rem 0;
    align-items: center;
  }

  .contents-head::after {
    content: '▾';
    margin-left: auto;
    color: var(--ink-faint);
    transition: transform 0.15s ease;
  }

  .contents-disclosure[open] > .contents-head::after { transform: rotate(180deg); }
  .contents-disclosure[open] .chapter-list { max-height: 60vh; overflow-y: auto; }

  .prose { font-size: 1.02rem; }

  /* Justified text on a 327 px column opens rivers between words. */
  .prose p { text-align: left; }

  .chapter-title { font-size: 1.5rem; }
  .chapter-meta { font-size: 0.72rem; }

  .sources-head { gap: 0.5rem; }
  .source-line { gap: 0.4rem 0.6rem; }
  .source-index { min-width: 2.6rem; }
  .source-bytes { margin-left: 0; }

  /* A two-column table cannot hold a 34-character address inside 375 px: it pushed
     past the viewport. Stack label above value instead. */
  .facts, .facts tbody, .facts tr, .facts th, .facts td { display: block; width: auto; }
  .facts tr { border-bottom: 1px solid var(--rule); padding: 0.5rem 0; }
  .facts th, .facts td { border: 0; padding: 0 0 0.15rem; }
  .facts th { width: auto; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
  .facts td { word-break: break-word; }

  .stat-value { font-size: 1.25rem; }
  .pager-btn { flex: 1; }
}

@media (max-width: 420px) {
  .masthead-inner { flex-direction: column; align-items: flex-start; gap: 0.6rem; }
  .tabs { width: 100%; }
  .tab { flex: 1; text-align: center; }
  .stats { grid-template-columns: 1fr 1fr; }
}