/* Cypherpunk Code — DOC (flat layout, no HonKit chrome) */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  --cp-bg: #0c1408;
  --cp-bg-secondary: #10180c;
  --cp-fg: #f2f5e8;
  --cp-muted: #9aad88;
  --cp-border: #2d4a20;
  --cp-accent: #4ade20;
  --cp-accent-orange: #ff7a18;
  --cp-accent-dim: rgba(74, 222, 32, 0.12);
  --cp-topbar-h: 52px;
  --cp-sidebar-w: 260px;
  --cp-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --cp-font-mono: "JetBrains Mono", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--cp-bg);
  color: var(--cp-fg);
  font-family: var(--cp-font-sans);
  -webkit-font-smoothing: antialiased;
}

/* ── Top bar ── */
.cp-doc-topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--cp-topbar-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  background: var(--cp-bg);
  border-bottom: 1px solid var(--cp-border);
}

.cp-doc-topbar__menu {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--cp-border);
  border-radius: 6px;
  background: transparent;
  color: var(--cp-muted);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}

.cp-doc-topbar__menu:hover {
  color: var(--cp-fg);
  border-color: var(--cp-accent);
}

.cp-doc-topbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cp-fg);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.cp-doc-topbar__mark {
  color: var(--cp-accent-orange);
  font-size: 11px;
}

.cp-doc-topbar__badge {
  font-family: var(--cp-font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--cp-accent);
  background: var(--cp-accent-dim);
  padding: 3px 8px;
  border-radius: 4px;
}

.cp-doc-topbar__back {
  margin-left: auto;
  color: var(--cp-muted);
  text-decoration: none;
  font-size: 13px;
}

.cp-doc-topbar__back:hover {
  color: var(--cp-accent-orange);
}

/* ── Shell: sidebar + content ── */
.book.cp-doc {
  display: flex;
  margin-top: var(--cp-topbar-h);
  min-height: calc(100vh - var(--cp-topbar-h));
  background: var(--cp-bg);
}

.book.cp-doc .book-summary {
  position: sticky;
  top: var(--cp-topbar-h);
  flex: 0 0 var(--cp-sidebar-w);
  width: var(--cp-sidebar-w);
  height: calc(100vh - var(--cp-topbar-h));
  overflow-y: auto;
  background: var(--cp-bg);
  border-right: 1px solid var(--cp-border);
}

.book.cp-doc .book-body {
  flex: 1;
  min-width: 0;
  background: var(--cp-bg);
}

.book.cp-doc .body-inner,
.book.cp-doc .page-wrapper,
.book.cp-doc .page-inner {
  position: static;
  height: auto;
  overflow: visible;
  background: transparent;
}

/* Hide HonKit leftovers */
.book-header,
.navigation-prev,
.navigation-next,
.gitbook-link,
.honkit-footer,
#book-search-input,
#book-search-results .search-results {
  display: none !important;
}

/* ── Sidebar nav ── */
.book .book-summary nav {
  padding: 12px 0 24px;
}

.book .book-summary ul.summary {
  margin: 0;
  padding: 0;
  list-style: none;
}

.book .book-summary ul.summary li {
  list-style: none;
}

.book .book-summary ul.summary li a,
.book .book-summary ul.summary li span {
  display: block;
  color: var(--cp-muted);
  font-size: 13px;
  line-height: 1.35;
  padding: 8px 20px;
  text-decoration: none;
  border: none;
  transition: color 0.12s ease, background 0.12s ease;
}

.book .book-summary ul.summary li a:hover {
  color: var(--cp-fg);
  background: var(--cp-bg-secondary);
}

.book .book-summary ul.summary li.active > a {
  color: var(--cp-accent);
  background: var(--cp-accent-dim);
  font-weight: 600;
}

.book .book-summary ul.summary li.header {
  color: var(--cp-accent-orange);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px 20px 6px;
  pointer-events: none;
}

.book .book-summary ul.summary li.divider {
  display: none;
}

/* ── Main content ── */
.book .book-body .page-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 36px 40px 72px;
}

.book .markdown-section {
  font-size: 16px;
  line-height: 1.75;
  color: var(--cp-muted);
}

.book .markdown-section h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--cp-fg);
  margin: 0 0 0.75em;
  letter-spacing: -0.02em;
  border: none;
  padding: 0;
}

.book .markdown-section h2 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--cp-fg);
  margin: 2em 0 0.6em;
  padding: 0;
  border: none;
}

.book .markdown-section h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--cp-accent);
  margin: 1.5em 0 0.5em;
}

.book .markdown-section p {
  margin: 0 0 1em;
}

.book .markdown-section strong {
  color: var(--cp-fg);
}

.book .markdown-section a {
  color: var(--cp-accent-orange);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.book .markdown-section a:hover {
  color: #ff9a4d;
}

.book .markdown-section code {
  font-family: var(--cp-font-mono);
  background: var(--cp-accent-dim);
  color: var(--cp-accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.book .markdown-section pre {
  background: var(--cp-bg-secondary);
  border-left: 2px solid var(--cp-border);
  border-radius: 0;
  padding: 16px 20px;
  margin: 1.25em 0;
  overflow-x: auto;
}

.book .markdown-section pre code {
  background: transparent;
  color: var(--cp-fg);
  padding: 0;
}

.book .markdown-section blockquote {
  border-left: 3px solid var(--cp-accent-orange);
  margin: 1.25em 0;
  padding: 0 0 0 16px;
  color: var(--cp-fg);
}

.book .markdown-section blockquote p {
  color: var(--cp-fg);
}

.book .markdown-section hr {
  border: none;
  border-top: 1px solid var(--cp-border);
  margin: 2em 0;
}

.book .markdown-section table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25em 0;
  font-size: 0.92em;
}

.book .markdown-section table th {
  text-align: left;
  color: var(--cp-accent);
  font-size: 0.78em;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 8px 12px 8px 0;
  border-bottom: 1px solid var(--cp-border);
}

.book .markdown-section table td {
  padding: 10px 12px 10px 0;
  border-bottom: 1px solid rgba(45, 74, 32, 0.45);
  color: var(--cp-muted);
}

.book .markdown-section ul,
.book .markdown-section ol {
  padding-left: 1.25em;
  margin: 0 0 1em;
}

.book .markdown-section input[type="checkbox"] {
  accent-color: var(--cp-accent);
}

/* Platform glance list */
.cp-glance {
  margin: 1.5em 0;
  display: grid;
  gap: 0;
}

.cp-glance__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--cp-border);
}

.cp-glance__item strong {
  color: var(--cp-fg);
  font-size: 0.92rem;
}

.cp-glance__item span {
  color: var(--cp-muted);
  font-size: 0.88rem;
}

/* Study pyramid */
.cp-pyramid {
  margin: 1.5em 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cp-pyramid__layer {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--cp-border);
}

.cp-pyramid__layer strong {
  color: var(--cp-fg);
  font-size: 0.95rem;
}

.cp-pyramid__layer span {
  color: var(--cp-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.cp-pyramid__layer--base {
  border-bottom: 2px solid var(--cp-accent-orange);
}

/* Bottom prev/next */
.navigation {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 40px 48px;
}

.navigation ul.pagination {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.navigation ul.pagination li a {
  color: var(--cp-muted);
  text-decoration: underline;
  font-size: 14px;
}

.navigation ul.pagination li a:hover {
  color: var(--cp-accent);
}

/* Scrollbars */
.book-summary::-webkit-scrollbar {
  width: 4px;
}

.book-summary::-webkit-scrollbar-thumb {
  background: var(--cp-border);
  border-radius: 2px;
}

/* Mobile */
@media (max-width: 768px) {
  .cp-doc-topbar__menu {
    display: inline-flex;
  }

  .book.cp-doc .book-summary {
    position: fixed;
    left: 0;
    top: var(--cp-topbar-h);
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
  }

  .book.cp-doc.sidebar-open .book-summary {
    transform: translateX(0);
  }

  .book .book-body .page-inner {
    padding: 28px 20px 56px;
  }

  .navigation {
    padding: 0 20px 32px;
  }

  .book .markdown-section h1 {
    font-size: 1.65rem;
  }
}

@media print {
  .cp-doc-topbar,
  .book-summary {
    display: none;
  }

  .book.cp-doc {
    margin-top: 0;
  }
}