/* GitHub light styling: force light mode (content uses github-markdown-light) */
* { box-sizing: border-box; }

html {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: #1f2328;
  background: #ffffff;
}

/* Header — full width */
.site-header {
  background: #f6f8fa;
  border-bottom: 1px solid #d0d7de;
  padding: 16px 24px;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.site-title {
  font-weight: 600;
  font-size: 20px;
  color: #1f2328;
  text-decoration: none;
}

.site-title:hover {
  color: #0969da;
}

.site-nav {
  margin-top: 8px;
}

.site-nav a {
  margin-right: 16px;
  color: #0969da;
  text-decoration: none;
}

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

/* Layout: sidebar + content */
.layout-container {
  display: flex;
  max-width: 1280px;
  margin: 0 auto;
  min-height: calc(100vh - 120px);
}

/* Sidebar — TOC and doc list */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  padding: 24px 16px 24px 24px;
  border-right: 1px solid #d0d7de;
  background: #fafbfc;
  position: sticky;
  top: 0;
  align-self: flex-start;
  max-height: 100vh;
  overflow-y: auto;
}

.sidebar-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #656d76;
  margin-bottom: 8px;
  padding-bottom: 4px;
}

.doc-nav ul,
.toc-nav ul {
  list-style: none;
  margin: 0 0 24px 0;
  padding: 0;
}

.doc-nav ul:last-child,
.toc-nav ul {
  margin-bottom: 0;
}

.doc-nav li,
.toc-nav li {
  margin: 0;
  padding: 0;
}

.doc-nav a,
.toc-nav a {
  display: block;
  padding: 4px 0;
  color: #0969da;
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
}

.doc-nav a:hover,
.toc-nav a:hover {
  text-decoration: underline;
}

.doc-nav a.active {
  font-weight: 600;
  color: #1f2328;
}

.toc-nav li.toc-h3 {
  padding-left: 12px;
}

.toc-nav a {
  color: #656d76;
}

.toc-nav a:hover {
  color: #0969da;
}

/* Main content area */
.page-content {
  flex: 1;
  min-width: 0;
  padding: 24px 40px 40px 32px;
}

.content-inner {
  max-width: 980px;
}

.post-header {
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #d0d7de;
}

.post-title {
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  color: #1f2328;
}

/* markdown-body from github-markdown-css handles content */
.post-content.markdown-body {
  padding-top: 0;
}

/* Mermaid diagrams: light background to match GitHub */
.post-content .mermaid {
  margin: 16px 0;
  padding: 16px;
  background: #f6f8fa;
  border-radius: 6px;
  overflow-x: auto;
}

/* Footer — full width */
.site-footer {
  border-top: 1px solid #d0d7de;
  padding: 24px;
  font-size: 12px;
  color: #656d76;
  background: #f6f8fa;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}

/* Responsive: stack sidebar above content on small screens */
@media (max-width: 768px) {
  .layout-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    max-height: none;
    position: static;
    border-right: none;
    border-bottom: 1px solid #d0d7de;
    padding: 16px 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 0 24px;
  }

  .doc-nav,
  .toc-nav {
    flex: 1;
    min-width: 180px;
  }

  .page-content {
    padding: 24px 16px 40px;
  }
}