html[data-accessibility-high-contrast="true"] {
  color-scheme: dark;
  --a11y-bg-primary: var(--color-neutral-900);
  --a11y-bg-surface: var(--color-primary-700);
  --a11y-bg-elevated: var(--color-primary-600);
  --a11y-text-primary: var(--color-text-inverse);
  --a11y-text-secondary: var(--color-primary-200);
  --a11y-accent: var(--color-primary-300);
  --a11y-accent-strong: var(--color-primary-100);
  --a11y-border-strong: var(--color-primary-200);
  --a11y-outline: var(--color-warning-600);
}

html[data-accessibility-high-contrast="true"] body {
  background-color: var(--a11y-bg-primary);
  color: var(--a11y-text-primary);
}

html[data-accessibility-high-contrast="true"] a,
html[data-accessibility-high-contrast="true"] .ui-link {
  color: var(--a11y-accent);
}

html[data-accessibility-high-contrast="true"] .ui-button,
html[data-accessibility-high-contrast="true"] .command-button,
html[data-accessibility-high-contrast="true"] .ui-button--primary,
html[data-accessibility-high-contrast="true"] .command-button--ghost,
html[data-accessibility-high-contrast="true"] .ui-button--secondary,
html[data-accessibility-high-contrast="true"] button,
html[data-accessibility-high-contrast="true"] .ui-card,
html[data-accessibility-high-contrast="true"] .bg-white,
html[data-accessibility-high-contrast="true"] .bg-slate-50,
html[data-accessibility-high-contrast="true"] .bg-white\/80,
html[data-accessibility-high-contrast="true"] .bg-white\/70,
html[data-accessibility-high-contrast="true"] .bg-slate-50\/70,
html[data-accessibility-high-contrast="true"] .bg-slate-50\/80,
html[data-accessibility-high-contrast="true"] .bg-indigo-50,
html[data-accessibility-high-contrast="true"] .bg-slate-100,
html[data-accessibility-high-contrast="true"] .bg-slate-200,
html[data-accessibility-high-contrast="true"] .bg-slate-900\/40,
html[data-accessibility-high-contrast="true"] .bg-white\/95,
html[data-accessibility-high-contrast="true"] .bg-white\/90,
html[data-accessibility-high-contrast="true"] .bg-white\/85 {
  background-color: var(--a11y-bg-surface) !important;
  color: var(--a11y-text-primary) !important;
}

html[data-accessibility-high-contrast="true"] .border-slate-100,
html[data-accessibility-high-contrast="true"] .border-slate-200,
html[data-accessibility-high-contrast="true"] .border-slate-300,
html[data-accessibility-high-contrast="true"] .border-white,
html[data-accessibility-high-contrast="true"] .border,
html[data-accessibility-high-contrast="true"] .ring-indigo-100,
html[data-accessibility-high-contrast="true"] .ring-indigo-200,
html[data-accessibility-high-contrast="true"] .ring-white,
html[data-accessibility-high-contrast="true"] .ring-inset,
html[data-accessibility-high-contrast="true"] .shadow-sm,
html[data-accessibility-high-contrast="true"] .shadow,
html[data-accessibility-high-contrast="true"] .shadow-xl {
  border-color: var(--a11y-border-strong) !important;
  box-shadow: 0 0 0 1px var(--a11y-border-strong) !important;
}

html[data-accessibility-high-contrast="true"] .text-slate-400,
html[data-accessibility-high-contrast="true"] .text-slate-500,
html[data-accessibility-high-contrast="true"] .text-slate-600,
html[data-accessibility-high-contrast="true"] .text-slate-700,
html[data-accessibility-high-contrast="true"] .text-slate-800,
html[data-accessibility-high-contrast="true"] .text-slate-900,
html[data-accessibility-high-contrast="true"] .text-indigo-600,
html[data-accessibility-high-contrast="true"] .text-indigo-700,
html[data-accessibility-high-contrast="true"] .text-indigo-900,
html[data-accessibility-high-contrast="true"] .text-slate-50,
html[data-accessibility-high-contrast="true"] .text-slate-200 {
  color: var(--a11y-text-primary) !important;
}

html[data-accessibility-high-contrast="true"] .ui-button,
html[data-accessibility-high-contrast="true"] .command-button,
html[data-accessibility-high-contrast="true"] button {
  border: 2px solid var(--a11y-border-strong) !important;
}

html[data-accessibility-high-contrast="true"] .ui-button:hover,
html[data-accessibility-high-contrast="true"] .command-button:hover,
html[data-accessibility-high-contrast="true"] button:hover,
html[data-accessibility-high-contrast="true"] .ui-button:focus,
html[data-accessibility-high-contrast="true"] .command-button:focus,
html[data-accessibility-high-contrast="true"] button:focus {
  background-color: var(--a11y-bg-elevated) !important;
  outline: 2px solid var(--a11y-outline);
  outline-offset: 2px;
}

html[data-accessibility-high-contrast="true"] .ui-chip,
html[data-accessibility-high-contrast="true"] .status-badge,
html[data-accessibility-high-contrast="true"] .timeline__toggle,
html[data-accessibility-high-contrast="true"] .timeline__panel {
  background-color: var(--a11y-bg-elevated) !important;
  color: var(--a11y-text-primary) !important;
  border-color: var(--a11y-border-strong) !important;
}

html[data-accessibility-high-contrast="true"] .ui-table th,
html[data-accessibility-high-contrast="true"] .ui-table td {
  border-color: var(--a11y-border-strong) !important;
}

html[data-accessibility-high-contrast="true"] .ui-progress-bar__track {
  background-color: var(--a11y-bg-elevated) !important;
}

html[data-accessibility-high-contrast="true"] .ui-progress-bar__fill {
  background-color: var(--a11y-accent) !important;
}

html[data-accessibility-high-contrast="true"] .command-button__shortcut kbd,
html[data-accessibility-high-contrast="true"] kbd {
  background-color: var(--a11y-bg-elevated) !important;
  color: var(--a11y-text-primary) !important;
  border-color: var(--a11y-border-strong) !important;
}

html[data-accessibility-high-contrast="true"] .ui-breadcrumbs li::after,
html[data-accessibility-high-contrast="true"] .ui-divider,
html[data-accessibility-high-contrast="true"] .border-t,
html[data-accessibility-high-contrast="true"] .border-b,
html[data-accessibility-high-contrast="true"] .border-l,
html[data-accessibility-high-contrast="true"] .border-r {
  border-color: var(--a11y-border-strong) !important;
}

html[data-accessibility-high-contrast="true"] .ui-breadcrumbs a:hover,
html[data-accessibility-high-contrast="true"] .ui-breadcrumbs a:focus {
  color: var(--a11y-accent-strong) !important;
}

html[data-accessibility-high-contrast="true"] .timeline__item::before,
html[data-accessibility-high-contrast="true"] .status-chip {
  background-color: var(--a11y-accent) !important;
  box-shadow: 0 0 0 3px var(--color-focus-ring) !important;
}

html[data-accessibility-high-contrast="true"] .hero-gradient {
  background: linear-gradient(
      135deg,
      var(--color-hero-gradient-start) 0%,
      var(--color-hero-gradient-end) 100%
    ) !important;
}

html[data-accessibility-high-contrast="true"] .portal-sidebar-active {
  background-color: var(--a11y-bg-elevated) !important;
  color: var(--a11y-text-primary) !important;
}

html[data-accessibility-high-contrast="true"] .command-palette,
html[data-accessibility-high-contrast="true"] .keyboard-shortcuts__dialog,
html[data-accessibility-high-contrast="true"] .ui-modal,
html[data-accessibility-high-contrast="true"] .ui-toast {
  background-color: var(--a11y-bg-surface) !important;
  color: var(--a11y-text-primary) !important;
  border-color: var(--a11y-border-strong) !important;
}

html[data-accessibility-high-contrast="true"] .ui-toast__title,
html[data-accessibility-high-contrast="true"] .ui-toast__body {
  color: var(--a11y-text-primary) !important;
}

html[data-accessibility-large-text="true"] {
  font-size: 18px;
}

html[data-accessibility-large-text="true"] body {
  font-size: 1.125rem;
}

html[data-accessibility-large-text="true"] .text-xs {
  font-size: 0.875rem !important;
}

html[data-accessibility-large-text="true"] .text-sm {
  font-size: 1rem !important;
}

html[data-accessibility-large-text="true"] .text-base {
  font-size: 1.125rem !important;
}

html[data-accessibility-large-text="true"] .text-lg {
  font-size: 1.3125rem !important;
}

html[data-accessibility-large-text="true"] .text-xl {
  font-size: 1.5rem !important;
}

html[data-accessibility-large-text="true"] .text-2xl {
  font-size: 1.75rem !important;
}

html[data-accessibility-large-text="true"] .text-3xl {
  font-size: 2rem !important;
}

html[data-accessibility-large-text="true"] .command-button__shortcut {
  font-size: 0.9rem !important;
}

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

html[data-accessibility-reduce-motion="true"] .hero-gradient,
html[data-accessibility-reduce-motion="true"] .card-hover:hover {
  transition: none !important;
}

.accessibility-toolbar {
  display: flex;
  align-items: center;
  position: relative;
}

.accessibility-toolbar__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 9999px;
  border: 1px solid var(--color-border-strong);
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
  padding: 0.35rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: 0 1px 2px var(--color-overlay);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.accessibility-toolbar__toggle:hover,
.accessibility-toolbar__toggle:focus {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--color-overlay);
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.accessibility-toolbar__icon {
  width: 1.15rem;
  height: 1.15rem;
}

.accessibility-toolbar__panel {
  position: absolute;
  right: 0;
  top: 100%;
  z-index: 60;
  margin-top: 0.75rem;
  width: min(24rem, 90vw);
  border-radius: 1rem;
  border: 1px solid var(--color-border-strong);
  background-color: var(--color-surface);
  box-shadow: 0 20px 45px var(--color-overlay);
  padding: 1.25rem 1.5rem;
  color: var(--color-neutral-900);
}

.accessibility-toolbar__panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.accessibility-toolbar__panel-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-neutral-900);
}

.accessibility-toolbar__panel-description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0.25rem 0 0;
}

.accessibility-toolbar__list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.accessibility-toolbar__item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-radius: 0.85rem;
  border: 1px solid var(--color-border-subtle);
  padding: 0.75rem 1rem;
  background-color: var(--color-surface-muted);
}

.accessibility-toolbar__item label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-neutral-900);
}

.accessibility-toolbar__item input[type="checkbox"] {
  width: 1.05rem;
  height: 1.05rem;
  border-radius: 0.35rem;
  border: 2px solid var(--color-primary-500);
  accent-color: var(--color-primary-500);
}

.accessibility-toolbar__item-description {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.accessibility-toolbar__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  gap: 0.75rem;
}

.accessibility-toolbar__reset {
  border-radius: 0.75rem;
  border: 1px solid var(--color-border-strong);
  background-color: var(--color-warning-50);
  color: var(--color-warning-700);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.accessibility-toolbar__reset:hover,
.accessibility-toolbar__reset:focus {
  background-color: var(--color-warning-100);
  color: var(--color-warning-700);
  outline: 2px solid var(--color-warning-600);
  outline-offset: 2px;
}

.accessibility-toolbar__status {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .accessibility-toolbar__panel {
    right: -1rem;
    left: -1rem;
    margin-left: auto;
    margin-right: auto;
    width: auto;
  }
}

html[data-accessibility-high-contrast="true"] .accessibility-toolbar__panel {
  background-color: var(--a11y-bg-surface);
  color: var(--a11y-text-primary);
  border-color: var(--a11y-border-strong);
}

html[data-accessibility-high-contrast="true"] .accessibility-toolbar__panel-description,
html[data-accessibility-high-contrast="true"] .accessibility-toolbar__status,
html[data-accessibility-high-contrast="true"] .accessibility-toolbar__item-description {
  color: var(--a11y-text-secondary);
}

html[data-accessibility-high-contrast="true"] .accessibility-toolbar__item {
  background-color: var(--a11y-bg-elevated);
  border-color: var(--a11y-border-strong);
}

html[data-accessibility-high-contrast="true"] .accessibility-toolbar__reset {
  background-color: transparent;
  color: var(--a11y-accent-strong);
  border-color: var(--a11y-border-strong);
}

html[data-accessibility-high-contrast="true"] .accessibility-toolbar__reset:hover,
html[data-accessibility-high-contrast="true"] .accessibility-toolbar__reset:focus {
  background-color: var(--a11y-bg-elevated);
  color: var(--a11y-text-primary);
  outline: 2px solid var(--a11y-outline);
  outline-offset: 2px;
}

html[data-accessibility-high-contrast="true"] .accessibility-toolbar__toggle {
  background-color: var(--a11y-bg-elevated);
  color: var(--a11y-text-primary);
  border-color: var(--a11y-border-strong);
}

html[data-accessibility-high-contrast="true"] .accessibility-toolbar__toggle:hover,
html[data-accessibility-high-contrast="true"] .accessibility-toolbar__toggle:focus {
  outline: 2px solid var(--a11y-outline);
  outline-offset: 2px;
}

html[data-accessibility-large-text="true"] .accessibility-toolbar__panel {
  font-size: 1.05rem;
}

html[data-accessibility-large-text="true"] .accessibility-toolbar__item-description {
  font-size: 0.95rem;
}

html[data-accessibility-large-text="true"] .accessibility-toolbar__status {
  font-size: 0.92rem;
}