/* Product 3D & AR help — light theme, Source Sans 3, brand blue #3C64F4. */
:root {
  --blue: #3c64f4;
  --blue-strong: #0b38d9;
  --blue-tint: #f0f3ff;
  --blue-tint-strong: #dbe3fe;
  --text: #313440;
  --muted: #5e637a;
  --border: #d9dce9;
  --bg: #f6f7fc;
  --surface: #ffffff;
  --subtle: #eceef5;
  --warn-bg: #fff9e6;
  --warn-border: #ffe180;
  --info-bg: #f0f3ff;
  --info-border: #9eb3fc;
  --radius: 8px;
  --content: 760px;
  --nav: 260px;
  --header: 56px;
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Source Sans 3", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

a {
  color: var(--blue-strong);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--text);
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -48px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 600;
}

.skip-link:focus {
  top: 8px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
}

.brand-sub {
  color: var(--muted);
  font-weight: 400;
  padding-left: 10px;
  border-left: 1px solid var(--border);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

/* Layout */
.shell {
  display: grid;
  grid-template-columns: var(--nav) minmax(0, 1fr);
  gap: 40px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-nav {
  position: sticky;
  top: var(--header);
  align-self: start;
  max-height: calc(100vh - var(--header));
  overflow-y: auto;
  padding: 24px 0;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav li + li {
  margin-top: 2px;
}

.site-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius);
  border-left: 3px solid transparent;
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
  line-height: 1.35;
}

.site-nav a:hover {
  background: var(--blue-tint);
  color: var(--text);
}

.site-nav a[aria-current="page"] {
  background: var(--surface);
  color: var(--text);
  border-left-color: var(--blue);
  box-shadow: 0 0 0 1px var(--border);
}

.nav-contact {
  margin: 20px 12px 0;
  font-size: 15px;
  color: var(--muted);
}

.content {
  min-width: 0;
  padding: 32px 0 48px;
  outline: none;
}

.doc {
  max-width: var(--content);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 40px 40px;
}

/* Typography */
.doc-title,
.doc h1 {
  margin: 0 0 8px;
  font-size: 32px;
  line-height: 1.25;
  font-weight: 700;
}

.lead {
  margin: 0 0 24px;
  font-size: 19px;
  color: var(--muted);
}

.doc h2 {
  margin: 40px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 24px;
  line-height: 1.3;
  font-weight: 600;
}

.doc h3 {
  margin: 28px 0 8px;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 600;
}

.doc h4 {
  margin: 20px 0 6px;
  font-size: 17px;
  font-weight: 600;
}

.doc p,
.doc ul,
.doc ol,
.doc table,
.doc dl {
  margin: 0 0 14px;
}

.doc ul,
.doc ol {
  padding-left: 24px;
}

.doc li + li {
  margin-top: 4px;
}

.doc li > ul,
.doc li > ol {
  margin-top: 4px;
  margin-bottom: 0;
}

.doc strong {
  font-weight: 600;
}

.doc code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--subtle);
  border-radius: 4px;
  padding: 1px 5px;
  overflow-wrap: anywhere;
}

.doc pre {
  overflow-x: auto;
  background: var(--subtle);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.5;
}

.doc pre code {
  background: none;
  padding: 0;
}

.doc kbd {
  font-family: inherit;
  font-size: 0.9em;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0 5px;
  background: var(--surface);
}

.ui {
  font-weight: 600;
}

/* Tables */
.table-wrap,
.doc table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

.doc table {
  border-collapse: collapse;
  font-size: 16px;
}

.doc th,
.doc td {
  text-align: left;
  vertical-align: top;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.doc th {
  background: var(--bg);
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

/* Callouts */
.note,
.warning,
.tip {
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 0 0 16px;
  border: 1px solid var(--info-border);
  background: var(--info-bg);
}

.warning {
  border-color: var(--warn-border);
  background: var(--warn-bg);
}

.note > :last-child,
.warning > :last-child,
.tip > :last-child {
  margin-bottom: 0;
}

/* On this page */
.toc {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 12px 16px;
  margin: 0 0 24px;
}

.toc-title {
  margin: 0 0 6px;
  font-weight: 600;
}

.toc ul {
  margin: 0;
  padding-left: 20px;
  columns: 2 220px;
  column-gap: 24px;
}

.toc li {
  break-inside: avoid;
}

/* Step list */
.steps {
  counter-reset: step;
  list-style: none;
  padding-left: 0 !important;
}

.steps > li {
  position: relative;
  padding-left: 44px;
  min-height: 32px;
}

.steps > li + li {
  margin-top: 12px;
}

.steps > li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--blue-tint-strong);
  color: var(--blue-strong);
  font-weight: 700;
}

/* Error code chip next to a heading */
.code {
  display: inline-block;
  margin-left: 6px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--subtle);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 400;
  line-height: 22px;
  vertical-align: middle;
}

.kind {
  display: inline-block;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  line-height: 22px;
}

.kind-error {
  background: #fff0f1;
  color: #80000b;
}

.kind-warning {
  background: #fff0bf;
  color: var(--text);
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 16px;
}

.cards a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
}

.cards a:hover {
  border-color: var(--blue);
  background: var(--blue-tint);
}

.cards b {
  display: block;
  font-weight: 600;
  color: var(--blue-strong);
}

.cards span {
  display: block;
  font-size: 15px;
  color: var(--muted);
}

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

/* Footer */
.site-footer {
  max-width: var(--content);
  padding: 24px 4px 0;
  font-size: 15px;
  color: var(--muted);
}

.site-footer p {
  margin: 0 0 6px;
}

/* Narrow screens: collapsible nav, 16 px gutters */
@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .site-header-inner {
    padding: 0 16px;
  }

  .brand-sub {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .shell {
    display: block;
    padding: 0 16px;
  }

  .site-nav {
    position: static;
    max-height: none;
    padding: 12px 0 0;
  }

  .js .site-nav {
    display: none;
  }

  .js .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px;
  }

  .site-nav a {
    padding: 11px 12px;
  }

  .nav-contact {
    margin: 12px 4px 0;
  }

  .content {
    padding: 16px 0 32px;
  }

  .doc {
    padding: 20px 16px 24px;
  }

  .doc-title,
  .doc h1 {
    font-size: 26px;
  }

  .doc h2 {
    font-size: 21px;
  }

  .cards {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media print {
  .site-header,
  .site-nav,
  .site-footer,
  .skip-link {
    display: none;
  }

  .shell {
    display: block;
  }

  .doc {
    border: 0;
    padding: 0;
  }
}

.site-nav .nav-contact a {
  display: inline;
  padding: 0;
  border: 0;
  border-radius: 0;
  font-weight: 400;
  color: var(--blue-strong);
  text-decoration: underline;
  box-shadow: none;
}

.site-nav .nav-contact a:hover {
  background: none;
  color: var(--text);
}