/* =====================================================================
   Agents in Parallel — custom theme
   Warm-dark editorial · amber accent · Inter
   NOTE: mdBook sets html{font-size:10px} (62.5% trick) → use px, not rem.
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --aip-amber: #E0922E;
  --aip-ink: #15120D;
  --aip-ink-2: #100E0A;
  --aip-line: #2A2419;
  --aip-line-2: #211C14;
  --aip-paper: #ECE7DC;
  --aip-paper-dim: #ABA293;
}

/* ---------- palette (navy theme) ---------- */
.navy {
  --bg: var(--aip-ink);
  --fg: var(--aip-paper);
  --sidebar-bg: var(--aip-ink-2);
  --sidebar-fg: var(--aip-paper-dim);
  --sidebar-non-existant: #5c554a;
  --sidebar-active: var(--aip-amber);
  --sidebar-spacer: var(--aip-line);
  --scrollbar: #3a3326;
  --icons: #8a8170;
  --icons-hover: var(--aip-amber);
  --links: var(--aip-amber);
  --inline-code-color: #E6BE84;
  --theme-popup-bg: var(--aip-ink-2);
  --theme-popup-border: var(--aip-line);
  --theme-hover: #211c14;
  --quote-bg: #1b1710;
  --quote-border: var(--aip-amber);
  --table-border-color: var(--aip-line);
  --table-header-bg: var(--aip-line-2);
  --table-alternate-bg: #19150f;
  --searchbar-border-color: var(--aip-line);
  --searchbar-bg: var(--aip-ink-2);
  --searchbar-fg: var(--aip-paper);
  --searchresults-header-fg: #8a8170;
  --searchresults-border-color: var(--aip-line);
  --searchresults-li-bg: #1b1710;
  --search-mark-bg: var(--aip-amber);
}

/* ---------- reading column + body ---------- */
.content main {
  max-width: 720px !important;
  margin: 0 auto !important;
  padding: 1.5rem 1.5rem 7rem !important;
}
.content {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
}
.content p,
.content li {
  font-size: 18px;
  line-height: 1.78;
  letter-spacing: 0.1px;
  color: #E4DED2;
}
.content p { margin: 0 0 1.25rem; }
.content ul, .content ol { margin: 0 0 1.25rem; }
.content li { margin: 0.35rem 0; }
.content li::marker { color: var(--aip-amber); }
.content strong { color: #FBF6EC; font-weight: 600; }

/* ---------- headings ---------- */
.content h1, .content h2, .content h3, .content h4 {
  font-family: "Inter", system-ui, sans-serif;
  color: #FBF6EC;
}
.content h1 {
  font-weight: 800;
  font-size: 38px;
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin: 0 0 0.5rem;
}
.content h2 {
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.02em;
  margin: 3rem 0 1rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--aip-line-2);
}
.content h3 {
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 2rem 0 0.6rem;
}

/* italic "dek" line right under the chapter H1 */
.content h1 + p {
  font-size: 20px;
  font-style: italic;
  line-height: 1.5;
  color: var(--aip-amber);
  opacity: 0.92;
  margin-bottom: 2rem;
}

/* ---------- links ---------- */
.content a {
  color: var(--aip-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 146, 46, 0.32);
  transition: border-color .15s ease;
}
.content a:hover { border-bottom-color: var(--aip-amber); }

/* ---------- blockquote / "The rule:" takeaways ---------- */
.content blockquote {
  border-left: 3px solid var(--aip-amber);
  background: var(--quote-bg);
  border-radius: 0 6px 6px 0;
  padding: 0.9rem 1.3rem;
  margin: 1.6rem 0;
  font-size: 18px;
  color: #EDE7DB;
}

/* ---------- code ---------- */
.content code { font-family: "JetBrains Mono", ui-monospace, monospace; }
.content :not(pre) > code {
  background: var(--aip-line-2);
  border: 1px solid var(--aip-line);
  border-radius: 4px;
  padding: 0.12em 0.42em;
  font-size: 0.82em;
}
.content pre {
  border: 1px solid #2A241B;
  border-radius: 10px;
  background: var(--aip-ink-2) !important;
  padding: 1.05rem 1.2rem;
  margin: 1.5rem 0;
}
.content pre > code { background: transparent !important; font-size: 14.5px; line-height: 1.65; }

/* ---------- tables ---------- */
.content table { border-collapse: collapse; font-size: 15.5px; margin: 1.5rem 0; }
.content table thead th {
  font-family: "Inter", sans-serif; font-weight: 600;
  letter-spacing: -0.005em; background: var(--aip-line-2);
}
.content td, .content th { border: 1px solid var(--aip-line); padding: 0.55rem 0.8rem; }

/* ---------- horizontal rules ---------- */
.content hr { border: none; border-top: 1px solid var(--aip-line-2); margin: 2.4rem 0; }

/* ---------- sidebar ---------- */
.sidebar { font-family: "Inter", sans-serif; font-size: 14px; }
.sidebar .sidebar-scrollbox { padding: 1.1rem 1.25rem; }
.chapter li.chapter-item { line-height: 1.45; margin: 0.4em 0; }
.chapter li a.active { color: var(--aip-amber); font-weight: 600; }
.menu-title { font-family: "Inter", sans-serif; font-weight: 600; }