/* =============================================================================
   COMPONENTS
   Demo sections, panels, tabs, WCAG badges, forms, buttons, modals, etc.
   ============================================================================= */

/* --- Demo Section --- */

.demo-section {
  scroll-margin-top: calc(var(--header-height) + var(--space-6));
}

@media (max-width: 71.9375em) {
  .demo-section {
    /* On mobile the demo-nav is a sticky bar below the header; add its
       approximate height (summary padding + text + nav padding-bottom)
       so anchor-linked sections don't scroll behind it. */
    scroll-margin-top: calc(
      var(--header-height) +
      var(--space-3) * 2 +
      var(--text-sm) * 1.5 +
      var(--space-2) +
      var(--space-6)
    );
  }
}

.demo-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.demo-number {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  min-width: 2.25rem;
  text-align: center;
  flex-shrink: 0;
}

.demo-title {
  flex: 1;
  min-width: 0;
}

/* --- Demo Meta (badge + share button row) --- */

.demo-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

@media (max-width: 40em) {
  .demo-meta {
    flex-basis: 100%;
  }
}

/* --- Share Button --- */

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  flex-shrink: 0;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.share-btn:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
}

.share-btn:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 2px;
}

.share-btn--copied {
  color: var(--color-fixed);
  background-color: var(--color-fixed-bg);
  border-color: var(--color-fixed-border);
}


.demo-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 56ch;
  margin-bottom: var(--space-6);
}

.demo-description code {
  font-size: 0.875em;
}

/* --- WCAG Badge --- */

.wcag-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

.wcag-badge__criterion {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.wcag-badge__level {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* --- Demo Panel Group --- */

.demo-panel-group {
  margin-bottom: var(--space-6);
}

/* --- Tab Controls (mobile) --- */

.demo-tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: -2px;
}

.demo-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.demo-tab:hover {
  color: var(--color-text);
  background-color: var(--color-surface-alt);
}

.demo-tab:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: -3px;
}

.demo-tab--broken[aria-selected="true"] {
  color: var(--color-broken);
  border-bottom-color: var(--color-broken);
}

.demo-tab--fixed[aria-selected="true"] {
  color: var(--color-fixed);
  border-bottom-color: var(--color-fixed);
}

/* --- Demo Panels --- */

.demo-panels {
  /* Single panel view on mobile (tab switching) */
}

.demo-panel {
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  background-color: var(--color-surface);
}

.demo-panel--broken {
  border-color: var(--color-broken-border);
}

.demo-panel--fixed {
  border-color: var(--color-fixed-border);
}

/* Desktop: side-by-side */
@media (min-width: 56em) {
  .demo-tabs {
    display: none;
  }

  .demo-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  /* Override hidden attribute on wide screens — show both panels */
  .demo-panel[hidden] {
    display: block !important;
  }
}

/* --- Panel Header --- */

.panel-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
}

.panel-header--broken {
  background-color: var(--color-broken-bg);
  color: var(--color-broken);
  border-bottom: 1px solid var(--color-broken-border);
}

.panel-header--fixed {
  background-color: var(--color-fixed-bg);
  color: var(--color-fixed);
  border-bottom: 1px solid var(--color-fixed-border);
}

.panel-header__code {
  margin-left: auto;
  font-size: var(--text-xs);
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-style: italic;
}

/* --- Panel Body --- */

.panel-body {
  padding: var(--space-5);
}

.panel-instruction {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  font-style: italic;
}

/* --- WCAG Annotation --- */

.wcag-annotation {
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-top: var(--space-5);
}

.wcag-annotation__heading {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.wcag-annotation__list {
  display: grid;
  gap: var(--space-3);
}

@media (min-width: 40em) {
  .wcag-annotation__list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.wcag-annotation__item dt {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.wcag-annotation__item dd {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* --- Tool CTA ("Test your own site") --- */

.tool-cta {
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-10);
}

.tool-cta__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

@media (min-width: 40em) {
  .tool-cta__inner {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-8);
  }

  .tool-cta__text {
    flex: 0 0 14rem;
  }

  .tool-cta__actions {
    flex: 1;
    min-width: 0;
  }
}

.tool-cta__heading {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.tool-cta__description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.tool-cta__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.tool-cta__label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.tool-cta__input-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.tool-cta__input {
  flex: 1;
  min-width: 12rem;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.tool-cta__input:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 0;
  border-color: var(--color-focus);
}

.tool-cta__submit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-text);
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--transition-fast);
}

.tool-cta__submit:hover {
  background-color: var(--color-primary-hover);
}

.tool-cta__submit:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 2px;
}

.tool-cta__hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin: 0;
}

.tool-cta__secondary {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.tool-cta__ext-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: var(--font-weight-medium);
}

/* --- Code Diff --- */

.demo-code {
  margin-top: var(--space-4);
}

.demo-code__summary {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.demo-code__body {
  padding: var(--space-4);
  background-color: var(--color-surface);
}

.code-diff {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 56em) {
  .code-diff {
    grid-template-columns: 1fr 1fr;
  }
}

.code-diff__col {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.code-diff__label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.code-diff__label--broken {
  color: var(--color-broken);
}

.code-diff__label--fixed {
  color: var(--color-fixed);
}

.code-diff__pre {
  flex: 1;
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
}

.code-diff__pre--broken {
  border-left: 3px solid var(--color-broken);
}

.code-diff__pre--fixed {
  border-left: 3px solid var(--color-fixed);
}

/* =============================================================================
   DEMO-SPECIFIC COMPONENTS
   ============================================================================= */

/* --- Demo 01: Color Contrast --- */

.cc-demo {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background-color: #ffffff;
}

[data-theme="dark"] .cc-demo {
  background-color: var(--color-surface);
}

/* Dark mode: adapt hardcoded contrast demo colors to the dark surface */
[data-theme="dark"] .cc-broken-text {
  color: #4b5568; /* ~1.8:1 on #1e293b — still "broken" */
}

[data-theme="dark"] .cc-fixed-text {
  color: #e2e8f0; /* ~11.5:1 on #1e293b — still "fixed" */
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .cc-broken-text {
    color: #4b5568;
  }

  :root:not([data-theme="light"]) .cc-fixed-text {
    color: #e2e8f0;
  }
}

.cc-demo__text {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

.cc-broken-text {
  color: #9ca3af;
}

.cc-fixed-text {
  color: #374151;
}

.cc-demo__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.cc-ratio {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-bold);
}

.cc-ratio--broken {
  color: var(--color-broken);
}

.cc-ratio--fixed {
  color: var(--color-fixed);
}

.cc-fail-badge,
.cc-pass-badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  padding: 0.1em 0.5em;
  border-radius: var(--radius-full);
  vertical-align: middle;
  margin-left: var(--space-1);
}

.cc-fail-badge {
  background-color: var(--color-broken-bg);
  color: var(--color-broken);
  border: 1px solid var(--color-broken-border);
}

.cc-pass-badge {
  background-color: var(--color-fixed-bg);
  color: var(--color-fixed);
  border: 1px solid var(--color-fixed-border);
}

/* Contrast Checker */

.contrast-checker {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.contrast-checker__heading {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.contrast-checker__controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

@media (max-width: 30em) {
  .contrast-checker__controls {
    grid-template-columns: 1fr;
  }
}

.contrast-checker__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contrast-checker__label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.contrast-checker__input-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.contrast-checker__color-input {
  width: 3rem;
  height: 2.5rem;
  padding: 0.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  cursor: pointer;
}

.contrast-checker__color-input:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 3px;
}

.contrast-checker__hex-input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text);
}

.contrast-checker__hex-input:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 3px;
  border-color: var(--color-primary);
}

.contrast-checker__result {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  align-items: center;
}

@media (max-width: 36em) {
  .contrast-checker__result {
    grid-template-columns: 1fr;
  }
}

.contrast-checker__preview {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-border);
  min-height: 5rem;
  display: flex;
  align-items: center;
}

.contrast-checker__scores {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contrast-checker__score {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.contrast-checker__score dt {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.contrast-checker__ratio {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.contrast-checker__verdict {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
}

.contrast-checker__verdict[data-pass="true"] {
  color: var(--color-fixed);
}

.contrast-checker__verdict[data-pass="false"] {
  color: var(--color-broken);
}

/* --- Demo 02: Alt Text --- */

.alt-text-demo {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.alt-text-case {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.alt-text-case__label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.alt-text-image-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.alt-text-image-placeholder {
  width: 3.5rem;
  height: 3.5rem;
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  flex-shrink: 0;
}

.alt-text-btn-broken,
.alt-text-btn-fixed {
  width: 3.5rem;
  height: 3.5rem;
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  cursor: pointer;
  flex-shrink: 0;
}

.alt-text-btn-fixed:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 3px;
}

.sr-simulation {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  border: 1px dashed;
  flex: 1;
}

.sr-simulation--broken {
  background-color: var(--color-broken-bg);
  border-color: var(--color-broken-border);
}

.sr-simulation--fixed {
  background-color: var(--color-fixed-bg);
  border-color: var(--color-fixed-border);
}

.sr-simulation__label {
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
  color: var(--color-text-muted);
}

.sr-simulation--broken .sr-simulation__output {
  color: var(--color-broken-dark);
  font-style: italic;
}

.sr-simulation--fixed .sr-simulation__output {
  color: var(--color-fixed-dark);
}

/* --- Demo 03: Form Labels --- */

.demo-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.form-label__hint {
  font-weight: var(--font-weight-normal);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  margin-left: var(--space-1);
}

.form-input {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
}

.form-input:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 3px;
  border-color: var(--color-primary);
}

.form-input--broken::placeholder {
  color: var(--color-text-secondary);
}

.form-input--fixed::placeholder {
  color: var(--color-text-muted);
}

.form-note {
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid;
}

.form-note--broken {
  background-color: var(--color-broken-bg);
  color: var(--color-broken-dark);
  border-color: var(--color-broken-border);
}

.form-note--fixed {
  background-color: var(--color-fixed-bg);
  color: var(--color-fixed-dark);
  border-color: var(--color-fixed-border);
}

/* --- Demo 04: Focus Visibility --- */

.focus-demo-nav {
  list-style: none;
  padding: 0;
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.focus-demo-link {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  text-decoration: none;
  background-color: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

.focus-demo-link:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.focus-demo-link--broken:focus,
.focus-demo-link--broken:focus-visible {
  outline: none !important;
  box-shadow: none !important;
}

.focus-demo-link--fixed:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.focus-demo-result {
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid;
}

.focus-demo-result--broken {
  background-color: var(--color-broken-bg);
  color: var(--color-broken-dark);
  border-color: var(--color-broken-border);
}

.focus-demo-result--fixed {
  background-color: var(--color-fixed-bg);
  color: var(--color-fixed-dark);
  border-color: var(--color-fixed-border);
}

/* --- Demo 05: Heading Structure --- */

.heading-outline {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.heading-outline__label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
}

.heading-outline__list {
  list-style: none;
  padding: var(--space-3) 0;
  margin: 0;
}

.heading-outline__item {
  padding: var(--space-1) var(--space-4);
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  line-height: var(--leading-normal);
}

.heading-outline__item--h1 { padding-left: calc(var(--space-4) + 0rem); }
.heading-outline__item--h2 { padding-left: calc(var(--space-4) + 1rem); }
.heading-outline__item--h3 { padding-left: calc(var(--space-4) + 2rem); }
.heading-outline__item--h4 { padding-left: calc(var(--space-4) + 3rem); }
.heading-outline__item--h5 { padding-left: calc(var(--space-4) + 4rem); }
.heading-outline__item--none { padding-left: calc(var(--space-4) + 1rem); color: var(--color-text-muted); }

.heading-outline__gap {
  font-size: var(--text-xs);
  color: var(--color-broken);
  font-weight: var(--font-weight-semibold);
}

.heading-outline--broken .heading-outline__item--h4,
.heading-outline--broken .heading-outline__item--h5 {
  color: var(--color-broken);
}

.heading-outline--fixed .heading-outline__item {
  color: var(--color-text);
}

/* --- Demo 06: Button Semantics --- */

.button-demo {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.fake-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  /* Intentionally no tab stop — demonstrating the broken pattern */
}

.fake-button--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
}

.fake-button--secondary {
  background-color: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.button-demo-result {
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid;
}

.button-demo-result--broken {
  background-color: var(--color-broken-bg);
  color: var(--color-broken-dark);
  border-color: var(--color-broken-border);
}

.button-demo-result--fixed {
  background-color: var(--color-fixed-bg);
  color: var(--color-fixed-dark);
  border-color: var(--color-fixed-border);
}

/* Real buttons (used across demos) */

.real-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.real-button:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 3px;
}

.real-button--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
}

.real-button--primary:hover {
  background-color: var(--color-primary-hover);
}

.real-button--secondary {
  background-color: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.real-button--secondary:hover {
  background-color: var(--color-border);
}

.real-button--ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.real-button--ghost:hover {
  background-color: var(--color-surface-alt);
  color: var(--color-text);
}

/* --- Demo 07: Modal Focus Trap --- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal-backdrop);
  background-color: rgb(0 0 0 / 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  backdrop-filter: blur(4px);
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-box {
  background-color: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 28rem;
  overflow: hidden;
}

.modal-box:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 3px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-broken-bg);
  color: var(--color-broken);
  border-color: var(--color-broken-border);
}

.modal-close:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 3px;
}

.modal-body {
  padding: var(--space-5) var(--space-6);
}

.modal-body p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.modal-footer {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
}

.modal-note {
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-4);
  font-style: italic;
  border-top: 1px solid var(--color-border);
}

.modal-note--broken {
  color: var(--color-broken);
  background-color: var(--color-broken-bg);
}

.modal-note--fixed {
  color: var(--color-fixed-dark);
  background-color: var(--color-fixed-bg);
}

/* Broken modal: no proper dialog markup */
.modal-box--broken {
  padding: var(--space-6);
}

.modal-box--broken .modal-form {
  margin-top: var(--space-4);
}

.modal-box--broken p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* --- Demo 08: Live Regions --- */

.live-region-demo {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.live-demo-status {
  min-height: 3rem;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
  color: var(--color-text-muted);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.live-demo-status.is-loading {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.live-demo-status.is-success {
  background-color: var(--color-fixed-bg);
  color: var(--color-fixed);
  border-color: var(--color-fixed-border);
}

.live-demo-status.is-error {
  background-color: var(--color-broken-bg);
  color: var(--color-broken);
  border-color: var(--color-broken-border);
}

.spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
    border-top-color: currentColor;
    opacity: 0.5;
  }
}

/* --- Demo 09: Skip Link --- */

.tab-counter {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.tab-counter__visual {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-4);
  background-color: var(--color-surface-alt);
}

.tab-item {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
}

.tab-item--nav {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: transparent;
}

.tab-item--skip {
  background-color: var(--color-fixed-bg);
  color: var(--color-fixed);
  border-color: var(--color-fixed-border);
  font-weight: var(--font-weight-semibold);
}

.tab-item--content {
  background-color: var(--color-surface-alt);
  color: var(--color-text-secondary);
}

.tab-item--target {
  border: 2px dashed var(--color-primary);
}

.tab-counter__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.skip-demo__cta {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-primary);
}

/* --- Demo 10: Reduced Motion --- */

.motion-demo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
}

.motion-demo__stage {
  width: 100%;
  height: 6rem;
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
}

.motion-box {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-lg);
  position: absolute;
}

.motion-box--broken {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-broken) 100%);
  animation: bounce-across 2s ease-in-out infinite;
}

.motion-box--fixed {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-fixed) 100%);
  animation: bounce-across 2s ease-in-out infinite;
}

.motion-box--fixed.is-reduced {
  animation: none;
  opacity: 0.5;
  left: 50%;
  transform: translateX(-50%);
}

@keyframes bounce-across {
  0%, 100% { left: var(--space-4); }
  50% { left: calc(100% - 3rem - var(--space-4)); }
}

@media (prefers-reduced-motion: reduce) {
  .motion-box--fixed {
    animation: none;
    opacity: 0.5;
    left: 50%;
    transform: translateX(-50%);
  }
}

.motion-demo__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Allow absolutely-positioned dropdowns to escape the panel bounds */
#demo-meganav .demo-panel {
  overflow: visible;
}

/* Re-apply corner clipping to the header (normally done by panel's overflow:hidden) */
#demo-meganav .panel-header {
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* ─── Demo 11: Mega Navigation ────────────────────────────── */

.demo-meganav {
  font-size: var(--text-sm);
}

.demo-meganav__bar {
  display: flex;
  gap: var(--space-1);
  list-style: none;
  padding: var(--space-1);
  margin: 0;
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.demo-meganav__item {
  position: relative;
}

.demo-meganav__trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  white-space: nowrap;
  color: var(--color-text);
  text-decoration: none;
}

.demo-meganav__trigger--broken {
  background: none;
  border: none;
  transition: background-color var(--transition-fast);
}

.demo-meganav__trigger--broken:hover,
.demo-meganav__item:hover > .demo-meganav__trigger--broken {
  background-color: var(--color-surface);
}

.demo-meganav__trigger--fixed {
  background: none;
  border: none;
  transition: background-color var(--transition-fast);
}

.demo-meganav__trigger--fixed:hover {
  background-color: var(--color-surface);
}

.demo-meganav__trigger--fixed:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 2px;
}

.demo-meganav__trigger--fixed[aria-expanded="true"] {
  background-color: var(--color-surface);
}

.demo-meganav__chevron {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.demo-meganav__trigger--fixed[aria-expanded="true"] .demo-meganav__chevron {
  transform: rotate(180deg);
}

/* Broken dropdown: CSS :hover only */
.demo-meganav--broken .demo-meganav__panel {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-1));
  left: 0;
  min-width: 160px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  box-shadow: 0 4px 12px rgb(0 0 0 / .12);
  z-index: var(--z-dropdown, 100);
  list-style: none;
  margin: 0;
}

.demo-meganav--broken .demo-meganav__item:hover .demo-meganav__panel {
  display: block;
}

.demo-meganav--broken .demo-meganav__panel a {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
}

.demo-meganav--broken .demo-meganav__panel a:hover {
  background-color: var(--color-surface-alt);
}

/* Fixed dropdown: JS-controlled with hidden attribute */
.demo-meganav--fixed .demo-meganav__panel {
  position: absolute;
  top: calc(100% + var(--space-1));
  left: 0;
  min-width: 160px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  box-shadow: 0 4px 12px rgb(0 0 0 / .12);
  z-index: var(--z-dropdown, 100);
  list-style: none;
  margin: 0;
}

.demo-meganav--fixed .demo-meganav__panel[hidden] {
  display: none;
}

.demo-meganav--fixed .demo-meganav__panel a {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
}

.demo-meganav--fixed .demo-meganav__panel a:hover {
  background-color: var(--color-surface-alt);
}

.demo-meganav--fixed .demo-meganav__panel a:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 2px;
}

/* ─── Demo 12: Carousel ───────────────────────────────────── */

.demo-carousel {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.carousel-track {
  position: relative;
}

.carousel-slide {
  padding: var(--space-6) var(--space-5);
  min-height: 9rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.carousel-slide[hidden] {
  display: none;
}

.carousel-slide--1 { background-color: var(--color-broken-bg); }
.carousel-slide--2 { background-color: var(--color-fixed-bg); }
.carousel-slide--3 { background-color: var(--color-surface-alt); }

.carousel-slide__eyebrow {
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin: 0;
}

.carousel-slide__title {
  font-size: var(--text-lg, 1.125rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin: 0;
}

.carousel-slide__body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.carousel-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.carousel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.carousel-btn:hover {
  background-color: var(--color-surface-alt);
}

.carousel-btn:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 2px;
}

.carousel-btn svg[hidden] {
  display: none;
}

.carousel-btn--pause[aria-pressed="true"] {
  background-color: var(--color-surface-alt);
  border-color: var(--color-text-secondary);
}

.carousel-counter {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-left: auto;
}

.carousel-dots {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  padding: var(--space-3);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.carousel-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--color-border);
  transition: background-color var(--transition-fast);
}

.carousel-dot--active {
  background-color: var(--color-text-secondary);
}

/* ─── Demo 13: Tooltip ────────────────────────────────────── */

/* Allow tooltips to escape the panel bounds */
#demo-tooltip .demo-panel {
  overflow: visible;
}

#demo-tooltip .panel-header {
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.tooltip-toolbar {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.tooltip-wrap {
  position: relative;
  display: inline-flex;
}

.icon-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.icon-action-btn:hover {
  background-color: var(--color-surface-alt);
}

.icon-action-btn:focus-visible {
  outline: var(--color-focus-ring);
  outline-offset: 2px;
}

.tooltip-box {
  position: absolute;
  bottom: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: var(--text-xs, 0.75rem);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  pointer-events: none;
  z-index: var(--z-dropdown, 100);
}

.tooltip-box--broken {
  display: none;
  background-color: var(--color-text);
  color: var(--color-surface);
}

.tooltip-wrap--broken:hover .tooltip-box--broken {
  display: block;
}

.tooltip-box--fixed {
  background-color: var(--color-text);
  color: var(--color-surface);
  pointer-events: auto;
}

.tooltip-box--fixed[hidden] {
  display: none;
}