/* FONTS
   Mapped from the 2019 manual's embedded faces:
     Avenir-Medium / Heavy / Oblique (body, headings) -> Nunito Sans
     MyriadPro-Cond / Regular / Bold (legal fine print) -> Source Sans 3 */
@import url("https://fonts.googleapis.com/css2?family=Nunito+Sans:ital,wght@0,400;0,600;0,800;1,400&family=Source+Sans+3:wght@400;600&display=swap");

/* PALETTE — sampled off the manual's own artwork */
:root {
  --ink: #12161b; /* body text */
  --accent: #005bad; /* the pedal's blue: rules, links, table headers */
  --deep: #0d1216; /* near-black ground of the cover photo */
  --paper: #eef3fa; /* tint block behind callouts */
}

/* RESETS */
* {
  box-sizing: border-box;
  margin-top: 0;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* GLOBAL STYLING */
body {
  color: var(--ink);
  font-family: "Nunito Sans", sans-serif;
  margin: 0;
}
p {
  font-weight: 400;
  line-height: 1.6;
}
main {
  margin-left: 20vw;
  padding-bottom: 3em;
}
/* The cover sets the wordmark against the photo's near-black ground */
#masthead {
  background: var(--deep);
}
#masthead h1 {
  margin: 0;
  padding: 1.5em 1.5em 0;
  text-align: right;
}
#masthead h1 img {
  width: auto;
  max-width: min(420px, 70%);
  margin-bottom: 0;
}
#masthead > img {
  margin-bottom: 0;
  display: block;
}

/* The manual sets titles as bold Avenir over a hairline rule, never reversed out */
h2 {
  font-weight: 800;
  font-size: 2em;
  color: var(--deep);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.15em;
  margin-bottom: 0.75em;
}
h3 {
  font-weight: 800;
  font-size: 1.25em;
  color: var(--accent);
  margin-bottom: 0.4em;
  /* a control name never ends up alone at the foot of a column */
  break-after: avoid;
}
h4 {
  font-weight: 800;
  font-size: 1em;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 1em;
}
h5 {
  font-weight: 600;
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.9em;
  margin-left: 0.75em;
}
/* Blue belongs to the pedal, not to the whole table of contents */
.nav-container a,
#toc-mobile a {
  color: var(--deep);
}
h5 a {
  color: rgba(18, 22, 27, 0.75);
}
img {
  width: 100%;
  margin-bottom: 0.75em;
}
a {
  text-decoration: none;
  color: var(--accent);
}
a:hover,
a:active {
  text-decoration: underline;
}

/* SIDE NAVIGATION */
#side-nav {
  width: 20vw;
  background: white;
  position: fixed;
  z-index: 5;
  height: 100%;
  overflow-y: auto;
  border-right: 1px solid rgba(0, 91, 173, 0.15);
}
.nav-container {
  display: flex;
  flex-direction: column;
  margin: 1em 0 0 1em;
}

/* CONTAINERS */
/* Text runs from the nav edge, not centred in what the nav leaves over:
   a column centred inside a right-shifted main reads as off-centre */
.flex-container {
  display: flex;
  padding-left: 2em;
}
/* Every section flows into columns sized from whatever width the page gives it:
   `2 30em` caps the count at two and drops to one below ~63em of room, so the
   measure follows the window instead of a fixed cap, with no breakpoint */
.half-container {
  padding: 0 1em;
  width: 100%;
  columns: 2 30em;
  column-gap: 3em;
}
/* The title rules across the whole section, not across one column */
.half-container > header {
  column-span: all;
}
.doc-update,
.qs-note,
figure {
  break-inside: avoid;
}
section + section {
  margin-top: 3em;
}
/* Skips the parent element and selects just the children */
.flow > * + * {
  margin-bottom: 1em;
}

/* Knob shots run across the section rather than down one of its columns; the
   upper bound keeps them near their native 254px instead of upscaling */
.grid-wrapper {
  column-span: all;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12em, 18em));
  gap: 1.5em;
  margin-bottom: 0.75em;
}
.grid-wrapper figure {
  margin: 0;
}
.grid-wrapper figcaption {
  font-style: italic;
  text-align: center;
  margin-top: -0.25em;
}

/* Changelog banner under the Welcome header */
.doc-update {
  font-size: 0.9em;
  line-height: 1.6;
  background: var(--paper);
  border-left: 4px solid var(--accent);
  padding: 1em 1.25em;
}
.doc-update > strong {
  display: block;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.5em;
}
.doc-update p {
  margin-bottom: 0.5em;
}
.doc-update p:last-child {
  margin-bottom: 0;
}
.doc-update a {
  text-decoration: underline;
}

/* Inline marker for material folded in from the 2021 quick start card */
.qs-note {
  border-left: 3px solid var(--accent);
  padding-left: 0.75em;
  margin-bottom: 1em;
}

/* Legal fine print keeps the manual's own condensed face and small size */
.fine-print {
  font-family: "Source Sans 3", sans-serif;
  font-size: 0.8em;
  line-height: 1.5;
}
.fine-print strong {
  font-weight: 600;
}

@media (max-width: 900px) {
  .flex-container {
    flex-direction: column;
    padding-left: 0;
  }
  .half-container {
    width: 100%;
    padding: 0;
  }
  nav {
    display: none;
  }
  main {
    margin: 0 auto;
    padding: 0 1em 3em;
  }
  #toc-mobile {
    display: block;
  }
}

/* 901, not 900: both queries match at exactly 900px, and this one comes later,
   so at that width the nav is hidden and the mobile TOC would be too */
@media (min-width: 901px) {
  #toc-mobile {
    display: none;
  }
}