/*
 * Pipeline docs — landing-page-aligned theme.
 * Mirrors pipeline.one tokens: warm-grey background, near-black ink, navy brand.
 * Type: Graphik LC (declared, system fallback) + Besley for display headings.
 */

:root {
  /* surfaces */
  --bg-primary:    #f8f7f6;
  --bg-secondary:  #ffffff;
  --bg-tertiary:   #ebeae9;

  /* content */
  --content-brand:           navy;        /* #000080 */
  --content-brand-hover:     #00006a;
  --content-primary:         #262524;
  --content-secondary:       #38373599;
  --content-primary-invert:  #ffffff;
  --content-secondary-invert:#ebe9e6b3;

  /* fills + borders */
  --fill-brand:           navy;
  --fill-on-primary:      #ffffff;
  --fill-subtle:          #bfbdbb1f;
  --border-secondary:     #3837352e;
  --border-strong:        #d5d4d3;

  /* state */
  --color-amber:  #b9870a;
  --color-rose:   #b1334b;
  --color-sage:   #2f6b3a;

  /* type */
  --font-sans:    "Graphik LC", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-display: "Besley", ui-serif, Georgia, serif;
  --font-mono:    ui-monospace, SFMono-Regular, Menlo, Monaco, "Courier New", monospace;

  /* layout */
  --nav-height:      64px;
  --sidebar-width:   272px;
  --toc-width:       232px;
  --content-max:     720px;
}

/* Besley is loaded via Google Fonts in the layout head. */

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  background: var(--bg-primary);
  color: var(--content-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Top nav */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-secondary);
  display: flex;
  align-items: center;
  padding: 0 32px;
  z-index: 20;
}
.topnav .brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--content-primary);
}
.topnav .brand img,
.topnav .brand svg {
  height: 28px;
  width: auto;
  display: block;
}
.topnav .brand-docs {
  margin-left: 12px;
  padding-left: 12px;
  border-left: 1px solid var(--border-secondary);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  color: var(--content-secondary);
  letter-spacing: 0.01em;
}
.topnav .launch {
  margin-left: auto;
  background: var(--fill-brand);
  color: var(--fill-on-primary);
  padding: 8px 18px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s ease;
}
.topnav .launch:hover { background: var(--content-brand-hover); }
.topnav .menu {
  display: none;
  margin-right: 14px;
  background: transparent;
  border: 0;
  font-size: 22px;
  cursor: pointer;
  color: var(--content-primary);
}

/* Left sidebar */
.sidebar {
  position: fixed;
  top: var(--nav-height);
  left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-primary);
  border-right: 1px solid var(--border-secondary);
  overflow-y: auto;
  padding: 16px 0 32px;
  z-index: 10;
}
.sidebar h4 {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.84px;
  color: var(--content-secondary);
  padding: 22px 28px 8px;
  margin: 0;
}
.sidebar h4:first-child { padding-top: 14px; }
.sidebar a {
  display: block;
  padding: 7px 28px;
  color: var(--content-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  border-left: 2px solid transparent;
  transition: background 0.12s ease, color 0.12s ease;
}
.sidebar a:hover {
  background: var(--fill-subtle);
}
.sidebar a.active {
  color: var(--content-brand);
  font-weight: 600;
  border-left-color: var(--content-brand);
  background: var(--fill-subtle);
}

/* Main content */
main {
  margin-top: var(--nav-height);
  margin-left: var(--sidebar-width);
  padding: 56px 56px 96px;
  max-width: calc(var(--content-max) + 112px);
}
@media (min-width: 1280px) {
  main { margin-right: calc(var(--toc-width) + 24px); }
}

/* Article typography */
article h1 {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.005em;
  margin: 4px 0 28px;
  color: var(--content-primary);
}
article h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.003em;
  margin: 48px 0 14px;
  scroll-margin-top: 88px;
  color: var(--content-primary);
}
article h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.002em;
  margin: 32px 0 10px;
  scroll-margin-top: 88px;
  color: var(--content-primary);
}
article h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.001em;
  margin: 24px 0 6px;
  color: var(--content-primary);
  text-transform: none;
}
article p, article li {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 14px;
  color: var(--content-primary);
}
article hr {
  border: none;
  border-top: 1px solid var(--border-secondary);
  margin: 48px 0 16px;
}
article a {
  color: var(--content-brand);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.12s ease;
}
article a:hover { border-bottom-color: var(--content-brand); }

article strong, article b { font-weight: 600; }
article em { font-style: italic; }
article ol, article ul { padding-left: 24px; margin-bottom: 14px; }

article blockquote {
  border-left: 3px solid var(--content-brand);
  padding: 6px 0 6px 18px;
  margin: 18px 0;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.45;
  color: var(--content-primary);
}

article code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--bg-tertiary);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--content-primary);
}
article pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: 4px;
  padding: 16px 18px;
  overflow-x: auto;
  margin-bottom: 18px;
  font-size: 13.5px;
}
article pre code {
  background: transparent;
  padding: 0;
  font-size: inherit;
}

/* Tables */
article table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
  margin: 18px 0 22px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: 4px;
  overflow: hidden;
}
article th, article td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-secondary);
  vertical-align: top;
}
article tr:last-child td { border-bottom: 0; }
article th {
  background: var(--bg-tertiary);
  font-weight: 600;
  color: var(--content-primary);
  font-size: 13px;
  letter-spacing: 0.01em;
}
article td { color: var(--content-primary); }

/* Callouts */
.callout {
  background: var(--bg-secondary);
  border: 1px solid var(--border-secondary);
  border-left: 3px solid var(--content-brand);
  padding: 16px 20px;
  margin: 22px 0;
  border-radius: 4px;
}
.callout h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 500;
  margin-top: 0;
  margin-bottom: 6px;
  letter-spacing: -0.001em;
  text-transform: none;
  color: var(--content-brand);
}
.callout.risk    { border-left-color: var(--color-rose);  }
.callout.risk  h4 { color: var(--color-rose);  }
.callout.info   { border-left-color: var(--content-brand); }
.callout.info  h4 { color: var(--content-brand); }
.callout.safety { border-left-color: var(--color-sage); }
.callout.safety h4 { color: var(--color-sage); }

/* Numbered steps */
.steps {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
  margin: 22px 0;
}
.steps li {
  counter-increment: step;
  position: relative;
  padding: 10px 0 10px 44px;
  font-size: 15.5px;
  line-height: 1.55;
  border-bottom: 1px solid var(--border-secondary);
}
.steps li:last-child { border-bottom: 0; }
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0; top: 8px;
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--content-brand);
  color: var(--fill-on-primary);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
}

/* Figures (diagrams + charts) */
.figure {
  background: var(--bg-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: 4px;
  padding: 24px 24px 18px;
  margin: 28px 0;
}
.figure svg, .figure img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}
.figure figcaption {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-secondary);
  font-size: 13px;
  color: var(--content-secondary);
  text-align: center;
  font-style: italic;
}

/* Card grids (homepage etc.) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 22px 0;
}
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: 4px;
  padding: 22px 22px 20px;
  text-decoration: none;
  display: block;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover {
  border-color: var(--content-brand);
}
.card h4 {
  color: var(--content-primary);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.002em;
  margin: 0 0 6px;
  text-transform: none;
}
.card p {
  color: var(--content-secondary);
  font-size: 14px;
  margin: 0;
  line-height: 1.5;
}

/* Breadcrumb */
.breadcrumb {
  color: var(--content-secondary);
  font-size: 13px;
  margin-bottom: 12px;
}
.breadcrumb a {
  color: var(--content-secondary);
  text-decoration: none;
  font-weight: 400;
  border-bottom: 0;
}
.breadcrumb a:hover { color: var(--content-primary); }

/* Right-hand TOC */
.toc {
  position: fixed;
  top: calc(var(--nav-height) + 56px);
  right: 24px;
  width: var(--toc-width);
  max-height: calc(100vh - var(--nav-height) - 88px);
  overflow-y: auto;
  padding: 0;
  font-size: 13px;
  line-height: 1.5;
  z-index: 5;
}
.toc-label {
  color: var(--content-secondary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.84px;
  font-weight: 600;
  padding: 0 14px 8px;
  margin: 0 0 6px;
  border-bottom: 1px solid var(--border-secondary);
}
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 0; }
.toc a {
  display: block;
  padding: 5px 14px;
  color: var(--content-secondary);
  text-decoration: none;
  border-left: 2px solid transparent;
  font-size: 13px;
  border-bottom: 0;
}
.toc a:hover { color: var(--content-primary); }
.toc a.toc-h1 { font-weight: 600; color: var(--content-primary); }
.toc a.toc-h3 { padding-left: 26px; font-size: 12px; }
.toc a.active {
  color: var(--content-brand);
  border-left-color: var(--content-brand);
  font-weight: 600;
}

@media (max-width: 1279px) { .toc { display: none; } main { margin-right: 0; } }

@media (max-width: 880px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .sidebar.open { transform: translateX(0); }
  main { margin-left: 0; padding: 32px 22px 64px; }
  .topnav { padding: 0 18px; }
  .topnav .menu { display: inline-flex; align-items: center; }
  article h1 { font-size: 34px; }
  article h2 { font-size: 24px; }
}

.muted { color: var(--content-secondary); }

.callout.warning    { border-left-color: var(--color-amber); }
.callout.warning h4 { color: var(--color-amber); }