/* === 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;
  }
  
  .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: #58a6ff;
  }
  
  .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;
  }

  .hero-image {
    margin: 0 0 1.5rem;
  }

  .hero-image img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
  }