/* ==========================================================================
   TypesetOK — Comprehensive Accessibility (WCAG 2.2 AA/AAA) & Motion Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Shared Motion Primitives (CSS Only)
   -------------------------------------------------------------------------- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1), transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

.stagger-1 { transition-delay: 50ms; }
.stagger-2 { transition-delay: 100ms; }
.stagger-3 { transition-delay: 150ms; }

/* --------------------------------------------------------------------------
   2. Keyboard Accessibility & WCAG 2.2 Focus Visible
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--color-brand-blue) !important;
  outline-offset: 3px !important;
}

button,
a,
input,
select,
.icon-btn,
.segment-btn {
  min-height: 42px;
  touch-action: manipulation;
}

/* --------------------------------------------------------------------------
   3. Reduced Motion Support (System Query + Manual Toggle)
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
  }
}

[data-reduced-motion="true"] *,
[data-reduced-motion="true"] *::before,
[data-reduced-motion="true"] *::after {
  animation-duration: 0.001ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.001ms !important;
  scroll-behavior: auto !important;
}

[data-reduced-motion="true"] .reveal-on-scroll {
  opacity: 1 !important;
  transform: none !important;
}

/* --------------------------------------------------------------------------
   4. Accessibility Feature States (Controlled via A11y Toolbar)
   -------------------------------------------------------------------------- */

/* Font Size Scaling */
[data-font-scale="1"] { font-size: 17px !important; }
[data-font-scale="2"] { font-size: 19px !important; }
[data-font-scale="3"] { font-size: 21px !important; }

/* Readable / Dyslexia-friendly Font */
[data-readable-font="true"] * {
  font-family: Arial, system-ui, -apple-system, sans-serif !important;
  letter-spacing: 0.02em !important;
}

/* High Contrast Mode */
[data-high-contrast="true"] {
  --color-bg-base: #000000 !important;
  --color-bg-paper: #000000 !important;
  --color-bg-surface: #0a0a0a !important;
  --color-bg-subtle: #141414 !important;
  --color-ink-primary: #FFFF00 !important;
  --color-ink-secondary: #FFFFFF !important;
  --color-ink-muted: #00FFFF !important;
  --color-border-subtle: #FFFF00 !important;
  --color-border-medium: #FFFF00 !important;
  --color-brand-blue: #00FFFF !important;
  --color-brand-navy: #FFFFFF !important;
}

[data-high-contrast="true"] a {
  text-decoration: underline !important;
  color: #00FFFF !important;
}

[data-high-contrast="true"] button,
[data-high-contrast="true"] .btn {
  border: 2px solid #FFFF00 !important;
  color: #FFFF00 !important;
}

/* Monochrome / Grayscale Mode */
[data-monochrome="true"] {
  filter: grayscale(100%) !important;
}

/* Highlight Links */
[data-highlight-links="true"] a {
  background-color: #FFFF00 !important;
  color: #000000 !important;
  text-decoration: underline !important;
  font-weight: 700 !important;
  padding: 1px 4px !important;
  border-radius: 2px !important;
}

/* Highlight Headings */
[data-highlight-headings="true"] h1,
[data-highlight-headings="true"] h2,
[data-highlight-headings="true"] h3,
[data-highlight-headings="true"] h4 {
  background-color: rgba(37, 99, 235, 0.25) !important;
  border-right: 4px solid var(--color-brand-blue) !important;
  padding-right: 8px !important;
}

[dir="ltr"][data-highlight-headings="true"] h1,
[dir="ltr"][data-highlight-headings="true"] h2,
[dir="ltr"][data-highlight-headings="true"] h3,
[dir="ltr"][data-highlight-headings="true"] h4 {
  border-right: none !important;
  border-left: 4px solid var(--color-brand-blue) !important;
  padding-left: 8px !important;
}

/* Big Cursor */
[data-big-cursor="true"] *,
[data-big-cursor="true"] body {
  cursor: default !important;
}
[data-big-cursor="true"] a,
[data-big-cursor="true"] button,
[data-big-cursor="true"] [role="button"] {
  cursor: pointer !important;
}

/* Line Spacing */
[data-line-spacing="wide"] p,
[data-line-spacing="wide"] li {
  line-height: 2.1 !important;
}

/* Letter Spacing */
[data-letter-spacing="wide"] * {
  letter-spacing: 0.08em !important;
}

/* --------------------------------------------------------------------------
   5. Floating Accessibility Widget & Drawer
   -------------------------------------------------------------------------- */
.a11y-trigger-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-brand-blue);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  z-index: var(--z-a11y-widget);
  border: 2px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: transform var(--motion-fast), background-color var(--motion-fast);
}

.a11y-trigger-btn:hover {
  transform: scale(1.08);
  background: var(--color-brand-blue-hover);
}

[dir="ltr"] .a11y-trigger-btn {
  right: auto;
  left: 24px;
}

.a11y-drawer {
  display: none;
  position: fixed;
  bottom: 86px;
  right: 24px;
  width: 330px;
  max-width: calc(100vw - 32px);
  max-height: 82vh;
  background: var(--color-bg-paper);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-floating);
  z-index: var(--z-a11y-widget);
  overflow-y: auto;
  padding: var(--space-5);
}

[dir="ltr"] .a11y-drawer {
  right: auto;
  left: 24px;
}

.a11y-drawer.open {
  display: block;
  animation: a11yFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes a11yFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.a11y-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-4);
}

.a11y-title {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-ink-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.a11y-close-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-ink-muted);
}

.a11y-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.a11y-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-bg-subtle);
  color: var(--color-ink-primary);
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  transition: all var(--motion-fast);
  cursor: pointer;
}

.a11y-btn:hover {
  background: var(--color-brand-blue-light);
  border-color: var(--color-brand-blue);
  color: var(--color-brand-blue-hover);
}

.a11y-btn.active {
  background: var(--color-brand-blue);
  border-color: var(--color-brand-blue);
  color: #FFFFFF;
}

.a11y-reset-btn {
  grid-column: span 2;
  margin-top: var(--space-2);
  background: transparent;
  border: 1px dashed var(--color-border-medium);
  color: var(--color-ink-secondary);
}

.a11y-reset-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: #EF4444;
  color: #EF4444;
}

/* --------------------------------------------------------------------------
   6. Print Stylesheet
   -------------------------------------------------------------------------- */
@media print {
  .site-header,
  .site-footer,
  .a11y-trigger-btn,
  .a11y-drawer,
  .modal-backdrop,
  .modal-dialog,
  .scroll-progress-bar {
    display: none !important;
  }

  body {
    background: #FFFFFF !important;
    color: #000000 !important;
  }
}