/* CNIB Orion Accessible Experience Standard — page chrome, type, and global a11y. */

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1rem;
  line-height: var(--line);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

h1, h2, h3, h4, h5 {
  font-family: var(--font);
  font-weight: 700;
  line-height: 1.2;
  color: var(--fg);
  margin: 0 0 0.75rem;
}
h1 { font-size: clamp(1.75rem, 3vw, 2.75rem); }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.0625rem; }

p { margin: 0 0 1rem; }
ul, ol { margin: 0 0 1rem 1.25rem; padding: 0; }
li { margin-bottom: 0.35em; }

a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  background: var(--focus-fill);
  color: var(--fg);
}

code, kbd {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.9em;
}
code {
  background: var(--cnib-yellow-soft);
  border: 1px solid var(--border);
  padding: 0.05em 0.35em;
  border-radius: 4px;
}
kbd {
  display: inline-block;
  background: var(--cnib-white);
  color: var(--cnib-black);
  border: 2px solid var(--cnib-black);
  border-bottom-width: 3px;
  border-radius: 4px;
  padding: 0.05rem 0.4rem;
  line-height: 1.2;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link — first focusable control. Yellow on black is not used here:
   yellow fill + black text is the CNIB attention pairing. */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 10000;
  background: var(--cnib-yellow);
  color: var(--cnib-black);
  padding: 0.75em 1.5em;
  font-weight: 700;
  text-decoration: none;
  min-height: var(--target);
}
.skip-link:focus {
  top: 0;
  outline: 3px solid var(--cnib-black);
  color: var(--cnib-black);
  background: var(--cnib-yellow);
}

/* Main is a programmatic landmark, not a tabbable control. */
#main:focus { outline: none; }

/* ------------------------------------------------------------------
   Sticky accessibility toolbar
   ------------------------------------------------------------------ */
.a11y-bar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  background: var(--cnib-black);
  color: var(--cnib-white);
  padding: 0.5rem 0.75rem;
  border-bottom: 3px solid var(--cnib-yellow);
}

.a11y-bar button {
  background: transparent;
  color: var(--cnib-white);
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 0.4rem 0.75rem;
  min-height: var(--target);
  min-width: var(--target);
  font-weight: 700;
  cursor: pointer;
  line-height: 1.2;
}
.a11y-bar button:hover {
  background: var(--cnib-yellow);
  color: var(--cnib-black);
}
.a11y-bar button:focus-visible {
  outline: 3px solid var(--cnib-yellow);
  outline-offset: 2px;
  background: var(--cnib-yellow);
  color: var(--cnib-black);
}
.a11y-bar button[aria-pressed="true"],
.a11y-bar button[aria-expanded="true"] {
  background: var(--cnib-yellow);
  color: var(--cnib-black);
  border-color: var(--cnib-yellow);
}
.a11y-bar button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.a11y-bar button:disabled:hover {
  background: transparent;
  color: var(--cnib-white);
}

.a11y-size {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem 0.5rem;
  border: 2px solid var(--cnib-white);
  border-radius: 6px;
}
.a11y-size-label {
  font-size: 0.875rem;
  margin-right: 0.25rem;
  font-weight: 700;
}
.a11y-size-display {
  font-variant-numeric: tabular-nums;
  min-width: 3.4em;
  text-align: center;
  font-weight: 700;
}

.a11y-panel {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  background: var(--bg);
  color: var(--fg);
  border: 3px solid var(--border);
  border-top: none;
}
.a11y-panel[hidden] { display: none; }
.a11y-panel h2 { font-size: 1.25rem; }
.a11y-panel h3 { font-size: 1.05rem; margin-top: 1rem; }

.a11y-shortcut-list {
  display: grid;
  grid-template-columns: minmax(12rem, max-content) 1fr;
  gap: 0.5rem 1.25rem;
  margin: 0.75rem 0 0;
}
.a11y-shortcut-list dt { font-weight: 700; }
.a11y-shortcut-list dd { margin: 0; }

/* ------------------------------------------------------------------
   Site header and primary nav
   ------------------------------------------------------------------ */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  padding: 1rem 1.5rem;
  background: var(--cnib-black);
  color: var(--cnib-white);
  border-bottom: var(--header-rule) solid var(--cnib-yellow);
}

.brand-lockup { display: flex; flex-direction: column; gap: 0.15rem; }
.brand-mark {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cnib-yellow);
  letter-spacing: 0.04em;
  line-height: 1.1;
}
.brand-product {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--cnib-white);
}

.site-header nav[aria-label="Primary"] {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.site-header nav[aria-label="Primary"] a {
  color: var(--cnib-white);
  text-decoration: none;
  padding: 0.5rem 0.7rem;
  min-height: var(--target);
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  border-bottom: 3px solid transparent;
}
.site-header nav[aria-label="Primary"] a:hover,
.site-header nav[aria-label="Primary"] a:focus-visible {
  background: var(--cnib-yellow);
  color: var(--cnib-black);
  outline: none;
}
.site-header nav[aria-label="Primary"] a[aria-current="page"] {
  background: var(--cnib-yellow);
  color: var(--cnib-black);
  border-bottom-color: var(--cnib-white);
}

/* ------------------------------------------------------------------
   Page frame
   ------------------------------------------------------------------ */
.page {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}
.page > header { margin-bottom: 2rem; }

.eyebrow {
  display: inline-block;
  background: var(--cnib-yellow);
  color: var(--cnib-black);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  margin: 0 0 0.75rem;
}

.lead { font-size: 1.125rem; max-width: 48rem; }

.cover {
  background: var(--cnib-black);
  color: var(--cnib-white);
  padding: 4rem 1.5rem 3rem;
  border-bottom: 8px solid var(--cnib-yellow);
}
.cover .page { padding-top: 0; padding-bottom: 0; }
.cover .eyebrow { background: var(--cnib-yellow); color: var(--cnib-black); }
.cover h1 { color: var(--cnib-white); max-width: 20ch; }
.cover .lead { color: var(--cnib-white); }
.cover a { color: var(--cnib-yellow); }
.cover a:focus-visible {
  background: var(--cnib-yellow);
  color: var(--cnib-black);
}

.site-footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 4px solid var(--cnib-yellow);
  color: var(--cnib-muted);
  font-size: 0.9375rem;
}
.site-footer p { margin: 0 0 0.5rem; }
.site-footer a { color: var(--fg); }

/* ------------------------------------------------------------------
   Shared content patterns
   ------------------------------------------------------------------ */
.path-grid,
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}
.path-card,
.doc-card {
  border: 3px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  background: var(--bg);
  color: var(--fg);
}
.path-card h2,
.doc-card h2 { font-size: 1.25rem; margin-top: 0; }
.path-card a { font-weight: 700; }

.spec-note {
  border-left: 6px solid var(--cnib-yellow);
  background: var(--cnib-yellow-soft);
  padding: 0.85rem 1.1rem;
  margin: 0.75rem 0 1.5rem;
  color: var(--fg);
}
.spec-note .spec-kicker {
  display: block;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
  margin-bottom: 0.35rem;
}
.spec-note p:last-child { margin-bottom: 0; }

.do-dont {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1rem 0 2rem;
}
@media (max-width: 700px) { .do-dont { grid-template-columns: 1fr; } }
.do, .dont {
  border: 3px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
}
.do { background: var(--cnib-yellow); color: var(--cnib-black); }
.dont { background: var(--cnib-black); color: var(--cnib-yellow); }
.do h3, .dont h3 { margin-top: 0; }
.dont h3 { color: var(--cnib-yellow); }
.do ul, .dont ul { margin-bottom: 0; }

.swatch-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 1rem;
  margin: 1rem 0 2rem;
}
.swatch {
  border: 3px solid var(--cnib-black);
  border-radius: var(--radius);
  overflow: hidden;
}
.swatch-chip { height: 5.5rem; border-bottom: 3px solid var(--cnib-black); }
.swatch-chip.yellow { background: var(--cnib-yellow); }
.swatch-chip.black { background: var(--cnib-black); }
.swatch-chip.white { background: var(--cnib-white); }
.swatch-meta { padding: 0.75rem 0.9rem; background: var(--cnib-white); color: var(--cnib-black); }
.swatch-meta strong { display: block; font-size: 1.125rem; }
.swatch-meta code { border: 0; background: transparent; padding: 0; }

.specimen {
  border: 3px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  margin: 1rem 0 2rem;
  background: var(--bg);
}
.specimen .alpha {
  font-size: 1.75rem;
  letter-spacing: 0.02em;
  line-height: 1.4;
  margin: 0 0 0.75rem;
}
.specimen .pairs {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin: 0;
}

.toc {
  border: 3px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 0 0 2rem;
  background: var(--cnib-yellow-soft);
}
.toc h2 { font-size: 1.125rem; }
.toc ol { margin-bottom: 0; }

/* ------------------------------------------------------------------
   High contrast — white / yellow on black
   ------------------------------------------------------------------ */
html.cnib-high-contrast body { background: var(--cnib-black); color: var(--cnib-white); }
html.cnib-high-contrast h1,
html.cnib-high-contrast h2,
html.cnib-high-contrast h3,
html.cnib-high-contrast h4 { color: var(--cnib-yellow); }
html.cnib-high-contrast a { color: var(--cnib-white); }
html.cnib-high-contrast a:focus-visible {
  background: var(--cnib-yellow);
  color: var(--cnib-black);
}
html.cnib-high-contrast code {
  background: var(--cnib-black);
  color: var(--cnib-yellow);
  border-color: var(--cnib-yellow);
}
html.cnib-high-contrast kbd {
  background: var(--cnib-black);
  color: var(--cnib-yellow);
  border-color: var(--cnib-yellow);
}
html.cnib-high-contrast .a11y-panel,
html.cnib-high-contrast .path-card,
html.cnib-high-contrast .doc-card,
html.cnib-high-contrast .specimen,
html.cnib-high-contrast .toc {
  background: var(--cnib-black);
  color: var(--cnib-white);
  border-color: var(--cnib-yellow);
}
html.cnib-high-contrast .spec-note {
  background: var(--cnib-black);
  color: var(--cnib-white);
  border-left-color: var(--cnib-yellow);
  border: 2px solid var(--cnib-yellow);
  border-left-width: 6px;
}
html.cnib-high-contrast .swatch-meta {
  background: var(--cnib-black);
  color: var(--cnib-white);
}
html.cnib-high-contrast .site-footer { color: var(--cnib-yellow); }
html.cnib-high-contrast .cover a { color: var(--cnib-yellow); }

/* ------------------------------------------------------------------
   Print
   ------------------------------------------------------------------ */
@media print {
  .skip-link, .a11y-bar, .a11y-panel { display: none !important; }
  .site-header {
    background: var(--cnib-white);
    color: var(--cnib-black);
    border-bottom: 4pt solid var(--cnib-black);
  }
  .brand-mark { color: var(--cnib-black); }
  .brand-product { color: var(--cnib-black); }
  .site-header nav { display: none; }
  .cover {
    background: var(--cnib-white);
    color: var(--cnib-black);
    border-bottom: 4pt solid var(--cnib-black);
  }
  .cover h1, .cover .lead, .cover a { color: var(--cnib-black); }
  a { color: var(--cnib-black); }
  .page { padding: 0; max-width: 100%; }
}

@media (max-width: 700px) {
  .site-header { padding: 1rem; }
  .page { padding: 1.5rem 1rem 3rem; }
  .cover { padding: 2.5rem 1rem 2rem; }
  .a11y-shortcut-list { grid-template-columns: 1fr; }
}