/* Fonts: MyriadPro (Regular/Light/Cond/SemiboldCond/BoldCond/Black) -> Source Sans 3 */
@import url("https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@400;600;700;900&display=swap");

:root {
  --ink: #231f20;
  --accent: #3f8dc4;
  --dark: #4c4a4b;
  --paper: #f5f5f5;
}

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

body {
  color: var(--ink);
  font-family: "Source Sans 3", sans-serif;
  line-height: 1.5;
  margin: 0;
  background: #fff;
}

p, span, li, td, th {
  font-family: "Source Sans 3", sans-serif;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

main {
  margin-left: 20vw;
}

h1, h2, h3, h4, h5, h6 {
  break-after: avoid;
}

h2 {
  font-size: 1.9em;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.25em;
  margin-bottom: 0.75em;
}

h3 {
  font-size: 1.2em;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.5em;
}

h4, h5 {
  font-weight: 700;
  margin-bottom: 0.5em;
}

img {
  width: 100%;
  margin-bottom: 0.75em;
}

ul {
  list-style-type: square;
}
ul li::marker {
  color: var(--accent);
}

li {
  padding-left: 0.25em;
  break-inside: avoid;
}

.caption {
  font-size: 0.85em;
  color: var(--dark);
  margin-top: -0.5em;
  margin-bottom: 1em;
}

/* --- Masthead --- */
#masthead {
  text-align: center;
  padding: 3em 2em 2em;
  border-bottom: 1px solid #e2e2e2;
}
.brand-logo {
  width: auto;
  max-width: 240px;
  margin: 0 auto 2em;
}
#masthead h1 {
  font-size: 2.75em;
  font-weight: 900;
  letter-spacing: 0.01em;
  margin-bottom: 0.4em;
}
.tagline {
  max-width: 40em;
  margin: 0 auto 2em;
  font-size: 1.1em;
  color: var(--dark);
}
.hero-photo {
  max-width: 320px;
  width: 100%;
  margin: 0 auto;
}

/* --- Nav --- */
#side-nav {
  width: 20vw;
  background: #fff;
  border-right: 1px solid #e2e2e2;
  position: fixed;
  z-index: 5;
  height: 100%;
  overflow-y: auto;
}
.nav-container {
  display: flex;
  flex-direction: column;
  margin: 1.5em 0 1.5em 1.5em;
  padding-right: 1em;
}
.nav-container h3 {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9em;
  color: var(--dark);
  margin-bottom: 1em;
}
#side-nav a {
  color: inherit;
}
#side-nav h4 {
  font-weight: 600;
  font-size: 0.95em;
  margin-bottom: 0.85em;
}
#side-nav h5 {
  font-weight: 400;
  font-size: 0.85em;
  margin: -0.4em 0 0.6em 1em;
}

/* --- Layout --- */
.flex-container {
  display: flex;
  padding-left: 2em;
}
.half-container {
  width: 100%;
  padding: 0 1em;
  columns: 2 30em;
  column-gap: 3em;
}
.half-container > header {
  column-span: all;
}
.no-columns {
  columns: auto !important;
}
section + section {
  margin-top: 3em;
}
.flow > * + * {
  margin-bottom: 1em;
}
.keep-together {
  break-inside: avoid;
}

.grid-wrapper {
  column-span: all;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12em, 18em));
  gap: 1.5em;
  margin-bottom: 1em;
  align-items: start;
}
.grid-wrapper img {
  margin-bottom: 0;
}

.figure {
  margin-bottom: 1.5em;
  break-inside: avoid;
}
.figure img {
  max-width: 100%;
  display: block;
  margin: 0 auto 0.5em;
}
.figure .caption {
  text-align: center;
  margin-top: 0;
}

/* Numbered callout badge, matches the manual's square-outline numbers */
.callout-num {
  display: inline-block;
  min-width: 1.3em;
  padding: 0 0.2em;
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  text-align: center;
  font-weight: 700;
  font-size: 0.85em;
  margin-right: 0.4em;
}

/* --- Tables --- */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9em;
}
.doc-table th, .doc-table td {
  border: 1px solid #d9d9d9;
  padding: 0.5em 0.75em;
  vertical-align: top;
  text-align: left;
}
.doc-table th {
  background: var(--dark);
  color: #fff;
  font-weight: 600;
}
.table-scroll {
  overflow-x: auto;
  margin-bottom: 1em;
  break-inside: avoid;
}

/* --- Callout box (FCC) --- */
.fcc-box {
  column-span: all;
  border: 2px solid var(--ink);
  border-radius: 6px;
  padding: 1em 1.5em;
  max-width: 22em;
  margin-bottom: 1.5em;
  font-weight: 700;
}
.fcc-box p {
  margin: 0.2em 0;
}

/* --- Footer --- */
footer {
  margin-left: 20vw;
  padding: 2em 3em 3em;
  border-top: 1px solid #e2e2e2;
  color: var(--dark);
  font-size: 0.9em;
}
footer img {
  width: auto;
  max-width: 160px;
  margin-bottom: 0.5em;
}

@media (max-width: 900px) {
  .flex-container { flex-direction: column; padding-left: 0; }
  .half-container { width: 100%; padding: 0 1em; columns: auto; }
  nav { display: none; }
  main, footer { margin: 0 auto; }
  #toc-mobile { display: block; }
}
@media (min-width: 901px) {
  #toc-mobile { display: none; }
}