/* === Dark mode — Analogy series === */

/* === Disclosure Triangles (Easter Eggs) === */

/* Hide default browser marker */
summary::-webkit-details-marker {
  display: none;
}
summary::marker {
  content: none; /* Firefox */
}

/* Custom right/down triangle for .custom-disclosure */
.custom-disclosure summary::before {
  content: '▸';
  position: absolute;
  left: -0.1rem;               /* ← safer starting point */
  color: #8b949e;
  font-size: 1.1em;
  transition: transform 0.2s ease;
}


.custom-disclosure[open] summary::before {
  content: '▾';               /* down when open */
}

.custom-disclosure {
  color: #b1bac4 !important;
}


/* Shared styles for the Analogy series — based on chapter 01 */

body {
  font-family: Georgia, serif;
  line-height: 1.7;
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
  background: #0d1117;
  color: #e6edf3;
}

h1, h2, h3 {
  font-family: Arial, sans-serif;
}

h1 {
  text-align: center;
  border-bottom: 2px solid #30363d;
  padding-bottom: 10px;
}

h2 {
  margin: 2em 0 0.6em;
}

h3 {
  margin: 1.5em 0 0.5em;
}

p {
  margin: 1.2em 0;
}

blockquote {
  border-left: 4px solid #484f58;
  padding-left: 15px;
  margin: 20px 0;
  font-style: italic;
  color: #8b949e;
}

ul, ol {
  margin: 15px 0;
  padding-left: 25px;
}

li {
  margin: 0.5em 0;
}

a {
  color: #58a6ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.reference {
  font-size: 0.9em;
  margin: 10px 0;
}

footer {
  margin-top: 60px;
  text-align: center;
  font-size: 0.9em;
  color: #8b949e;
}

/* Utility classes used across chapters */
.byline {
  color: #8b949e;
  font-style: italic;
  margin-bottom: 2rem;
}

.teaser {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 2rem 0;
}

.index-related {
  margin-top: 3rem;
}

.library-books {
  list-style: none;
  padding-left: 0;
  margin: 1.5rem 0 2rem;
}

.library-books > li {
  margin-bottom: 2.25rem;
}

.library-books > li:last-child {
  margin-bottom: 0;
}

.library-book-title {
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.library-book-title a {
  font-family: Arial, sans-serif;
}

.references {
  margin-top: 3rem;
  font-size: 0.95rem;
}

.references li {
  margin-bottom: 1rem;
}

.added {
  background: #161b22;
  border-left: 5px solid #58a6ff;
  padding: 1.2em 1.8em;
  margin: 2em 0;
  font-size: 1.05em;
}

.added h3 {
  margin-top: 0;
  color: #79c0ff;
}

.caveat {
  background: #2d2a1f;
  padding: 1em 1.5em;
  border-left: 5px solid #d29922;
  margin: 1.5em 0;
}

.highlight {
  background: #3d3a2e;
  padding: 0.1em 0.3em;
  border-radius: 3px;
  color: #f0e68c;
}

.quote {
  margin: 1.5em 0;
  padding: 1em;
  background: #161b22;
  border-radius: 4px;
  border-left: 4px solid #30363d;
  color: #b1bac4;
  font-style: italic;
}

.footnote {
  font-size: 0.9em;
  color: #8b949e;
  margin-top: 3em;
  border-top: 1px solid #21262d;
  padding-top: 1em;
}

.footnotes {
  margin-top: 3em;
  padding-top: 1em;
  border-top: 1px solid #21262d;
  font-size: 0.95em;
  color: #b1bac4;
}

.footnotes ol,
ol.footnotes {
  padding-left: 1.5em;
  margin: 0;
  counter-reset: footnotes;
  list-style: none;
}

.footnotes li,
ol.footnotes li {
  margin-bottom: 0.8em;
  counter-increment: footnotes;
}

ol.footnotes li::before {
  content: counter(footnotes) ". ";
  font-weight: bold;
  margin-right: 0.5em;
}

.closing {
  font-style: italic;
  margin-top: 3em;
  border-top: 1px solid #21262d;
  padding-top: 1.5em;
}

.note {
  background-color: #161b22;
  border-left: 4px solid #58a6ff;
  padding: 0.5rem 1rem;
  margin: 1rem 0;
}

.pond {
  font-style: italic;
  color: #58a6ff;
}

/* Index article titles: main (blue) and subtitle (green) */
.title-main {
  color: #1756BF;
}

.title-sub {
  color: #3fb950;
}

/* Navigation: Previous | Index | Next at bottom */
.nav-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3em;
  padding-top: 1.5em;
  border-top: 1px solid #21262d;
  font-size: 0.95em;
}

.nav-bottom a {
  color: #58a6ff;
  text-decoration: none;
}

.nav-bottom a:hover {
  text-decoration: underline;
}

.nav-bottom .nav-disabled {
  color: #6e7681;
  cursor: default;
  pointer-events: none;
}

/* Dialogue/message blocks (e.g. Grok chapter) */
.message {
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  border-radius: 8px;
  background: #161b22;
  border-left: 4px solid #484f58;
}

.message.user {
  border-left-color: #58a6ff;
}

.message.grok {
  border-left-color: #3fb950;
}

.message h3 {
  margin-top: 0;
  margin-bottom: 0.75em;
}

.summary-box {
  background: #161b22;
  border-left: 4px solid #58a6ff;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
}

.highlight-box {
  background: #2d2a1f;
  border-left: 4px solid #d29922;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
}

.path {
  font-family: "SF Mono", Monaco, "Courier New", monospace;
  font-size: 0.9em;
}

.spaghetti {
  color: #d29922;
  font-weight: bold;
}

.file-list {
  font-size: 0.9em;
  margin-left: 1rem;
}

hr {
  border: none;
  border-top: 1px solid #21262d;
  margin: 2rem 0;
}

/* Code and pre */
code {
  font-family: Consolas, "Menlo", "Courier New", monospace;
  background: #21262d;
  color: #e6edf3;
  padding: 2px 5px;
  border-radius: 3px;
}

pre {
  background: #161b22;
  color: #e6edf3;
  padding: 1.2em;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.95em;
  line-height: 1.5;
  border: 1px solid #21262d;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

sup {
  font-size: 0.8em;
  vertical-align: super;
  color: #58a6ff;
}

/* Footnote refs (for The-Undescribed-Domain) */
.footnote-ref {
  font-size: 0.8em;
  vertical-align: super;
  color: #58a6ff;
  text-decoration: none;
}

.footnote-ref:hover {
  text-decoration: underline;
}

a.back-to-ref {
  font-size: 0.8em;
  margin-left: 5px;
  color: #58a6ff;
  text-decoration: none;
}

a.back-to-ref:hover {
  text-decoration: underline;
}

/* Homepage overrides — for landing-page style documents */
body.homepage {
  max-width: none;
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  color: #ffffff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

body.homepage .container {
  max-width: 900px;
  padding: 40px 20px;
}

body.homepage h1 {
  font-size: 5rem;
  font-weight: 800;
  margin: 0 0 1.5rem;
  letter-spacing: -0.05em;
  background: linear-gradient(to right, #a1c4fd, #c2e9fb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  border: none;
  text-align: center;
}

body.homepage .tagline {
  font-size: 1.8rem;
  font-weight: 400;
  max-width: 800px;
  margin: 0 auto 2rem;
  line-height: 1.5;
  opacity: 0.95;
}

body.homepage .highlight {
  font-weight: 600;
  color: #ffd166;
  background: none;
}

body.homepage footer {
  position: absolute;
  bottom: 20px;
  margin-top: 0;
  color: rgba(255, 255, 255, 0.7);
}

body.homepage a {
  color: #a1c4fd;
  text-decoration: none;
}

body.homepage a:hover {
  text-decoration: underline;
}