/* Go Past Earth — Platform Documentation */
:root {
  --bg: #0f1419;
  --bg-card: #1a2332;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-dim: #388bfd66;
  --border: #30363d;
  --code-bg: #161b22;
  --table-header: #21262d;
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  margin: 0;
  padding: 0;
}
.layout {
  display: flex;
  min-height: 100vh;
}
/* Only the chapter sidebar — not <nav class="page-toc"> inside <main> (e.g. ch.30) */
.layout > nav {
  width: 280px;
  min-width: 280px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.layout > nav h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 1rem 1.25rem 0.5rem;
}
.layout > nav a {
  display: block;
  padding: 0.4rem 1.25rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.layout > nav a:hover { color: var(--accent); background: var(--accent-dim); }
.layout > nav a.active { color: var(--accent); font-weight: 500; }
main {
  flex: 1;
  min-width: 0;
  padding: 2rem 3rem 4rem;
  max-width: 900px;
}
h1 { font-size: 2rem; margin-top: 0; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
h2 { font-size: 1.5rem; margin-top: 2.5rem; color: var(--accent); }
h3 { font-size: 1.2rem; margin-top: 1.5rem; }
h4 { font-size: 1rem; margin-top: 1rem; }
p { margin: 0.75rem 0; }
strong { color: #fff; }
a { color: var(--accent); }
a:hover { text-decoration: underline; }
hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }
ul, ol { margin: 0.75rem 0; padding-left: 1.5rem; }
li { margin: 0.35rem 0; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
}
code {
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}
pre code { background: none; padding: 0; }
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}
th, td {
  border: 1px solid var(--border);
  padding: 0.6rem 0.8rem;
  text-align: left;
}
th { background: var(--table-header); color: var(--text-muted); font-weight: 600; }
tr:hover td { background: rgba(255,255,255,0.02); }
.section { margin-bottom: 3rem; }
.meta { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1rem; }
.platform-arch-note {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: -0.35rem 0 0.75rem;
  line-height: 1.55;
}
.ceo-summary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}
.ceo-summary h3 { margin-top: 0; color: var(--accent); }
.page-toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}
.page-toc h3 { margin: 0 0 0.5rem; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); }
.page-toc ul { margin: 0; padding-left: 1.25rem; }
.page-toc li { margin: 0.25rem 0; }
.page-toc a { color: var(--text-muted); text-decoration: none; }
.page-toc a:hover { color: var(--accent); }
.mermaid { margin: 1.5rem 0; text-align: center; }

/* Full-stack architecture page — wider main column + scrollable diagrams */
main.architecture-page {
  max-width: min(1600px, 96vw);
  padding-bottom: 5rem;
}
main.architecture-page .mermaid {
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  text-align: left;
  padding: 1.25rem 1.25rem 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-height: 4rem;
}
/* Do not shrink wide Mermaid SVGs to column width — horizontal scroll instead (avoids left-edge clip) */
main.architecture-page .mermaid svg {
  max-width: none;
  height: auto;
  display: block;
}
main.architecture-page h2 {
  scroll-margin-top: 1rem;
}
@media print {
  .layout > nav { display: none; }
  .page-toc { display: none; }
  main { max-width: none; }
}
@media (max-width: 900px) {
  .layout { flex-direction: column; }
  .layout > nav { width: 100%; height: auto; position: relative; min-width: 0; }
  main { padding: 1.5rem; }
}

/* API explorer (api-explorer.html) */
main.api-explorer-main {
  max-width: 1200px;
}
.api-search-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.api-search-wrap label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}
.api-search-wrap input[type="search"] {
  flex: 1;
  min-width: 200px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--code-bg);
  color: var(--text);
  font-size: 0.95rem;
}
.api-visible-count {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.api-intro-fold {
  margin: 1rem 0 1.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
}
.api-intro-fold summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 500;
}
.api-intro-pre {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  max-height: 14rem;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.api-sec {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.api-sec:last-child {
  border-bottom: none;
}
.api-base {
  margin: 0.25rem 0 0.75rem;
  font-size: 0.9rem;
}
.api-preamble {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0.5rem 0 0.75rem;
  line-height: 1.55;
}
.api-bullets {
  font-size: 0.88rem;
  color: var(--text-muted);
}
.api-table {
  font-size: 0.85rem;
}
.api-table code {
  font-size: 0.8rem;
  word-break: break-all;
}
.method-badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
}
.method-badge.m-get { background: #23863644; color: #3fb950; }
.method-badge.m-post { background: #1f6feb44; color: #58a6ff; }
.method-badge.m-put { background: #d2992244; color: #e3b341; }
.method-badge.m-del { background: #f8514944; color: #ff7b72; }
.method-badge.m-other { background: #8b949e44; color: #c9d1d9; }
.api-empty {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-style: italic;
}

/* Master Map — layered stack (outside → inside) */
.layer-stack {
  margin: 1.5rem 0 2rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}
.layer-strip {
  padding: 1.25rem 1.5rem 1.35rem;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.layer-strip:last-child {
  border-bottom: none;
}
.layer-strip h3 {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
  color: var(--text);
}
.layer-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.layer-lead {
  margin: 0.25rem 0 0.5rem;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.layer-links {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  font-size: 0.88rem;
}
.layer-links li { margin: 0.3rem 0; }
.layer-l1 {
  background: linear-gradient(180deg, #1c2838 0%, #1a2332 100%);
}
.layer-l2 {
  background: linear-gradient(180deg, #1a2730 0%, #182228 100%);
}
.layer-l3 {
  background: linear-gradient(180deg, #1a2530 0%, #16202a 100%);
}
.layer-l4 {
  background: linear-gradient(180deg, #182428 0%, #141c24 100%);
}
.layer-l5 {
  background: linear-gradient(180deg, #162220 0%, #121a18 100%);
}
.layer-l6 {
  background: linear-gradient(180deg, #1a2220 0%, #141a18 100%);
}