/* Ported from the original SidePanel + LanguagePanel + AccessibilityPanel
   (MUI Drawer/`sx` -> plain CSS) and the DBIM Figure 44 accessibility
   effect classes from `styles/global.css` + `hooks/useAccessibilityEffects.ts`
   + the A-/A/A+ root font-size scale from `theme/theme.ts`. */

.site-panel-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  justify-content: flex-end;
  align-items: stretch;
  background: rgba(0, 0, 0, 0.5);
}

.site-panel-backdrop.is-open {
  display: flex;
}

.site-panel {
  display: flex;
  flex-direction: column;
  width: 400px;
  max-width: 100%;
  height: 100%;
  background: var(--color-bg-paper);
  box-shadow: -8px 0 24px rgb(0 0 0 / 24%);
}

.site-panel__head {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  color: var(--color-on-primary);
  background: var(--color-primary-dark);
}

.site-panel__head-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
}

.site-panel__close {
  display: inline-flex;
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  flex: 0 0 var(--touch-target-min);
  align-items: center;
  justify-content: center;
  color: inherit;
  background: transparent;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
}

.site-panel__close:hover {
  background: rgb(255 255 255 / 15%);
}

.site-panel__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  overflow-y: auto;
}

.site-panel__footer {
  flex: 0 0 auto;
  padding: 16px 24px;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  border-top: 1px solid var(--color-divider);
}

/* Language panel cards */
.site-lang-card {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: var(--touch-target-min);
  gap: 12px;
  padding: 16px;
  text-align: left;
  color: var(--color-text-primary);
  background: var(--color-bg-paper);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  cursor: pointer;
  font: inherit;
}

.site-lang-card:hover {
  background: var(--color-neutral-bg);
}

.site-lang-card.is-selected {
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  border-color: var(--color-primary-main);
}

.site-lang-card__code {
  display: flex;
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  align-items: center;
  justify-content: center;
  color: var(--color-on-primary);
  background: var(--color-primary-dark);
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 800;
}

.site-lang-card__name {
  flex: 1;
  font-weight: 700;
}

.site-lang-card__check {
  display: none;
  color: var(--color-primary-main);
}

.site-lang-card.is-selected .site-lang-card__check {
  display: inline-flex;
}

/* Accessibility panel */
.site-a11y-reset {
  display: inline-flex;
  width: 100%;
  min-height: var(--touch-target-min);
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.6rem 1rem;
  color: var(--color-error-main);
  background: var(--color-bg-paper);
  border: 1px solid var(--color-error-main);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  font-weight: 800;
}

.site-a11y-reset:hover {
  background: var(--color-error-light);
}

.site-a11y-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.site-a11y-card {
  display: flex;
  min-height: var(--touch-target-min);
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px;
  color: var(--color-text-primary);
  background: var(--color-bg-paper);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
}

.site-a11y-card:hover {
  background: var(--color-neutral-bg);
}

.site-a11y-card.is-active {
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  border-color: var(--color-primary-main);
}

.site-a11y-card span {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1.3;
}

/*
 * DBIM Figure 44 accessibility-controls panel effects, applied to <html> by
 * public/js/site-header.js — mirrors the original
 * `hooks/useAccessibilityEffects.ts` + `styles/global.css`. Selectors repeat
 * the triggering class for the same reason as the source: to
 * out-rank same-specificity author rules loaded after this stylesheet
 * without `!important`.
 */
html.a11y-invert {
  filter: invert(1) hue-rotate(180deg);
}

html.a11y-low-saturation {
  filter: saturate(0.25);
}

html.a11y-invert.a11y-low-saturation {
  filter: invert(1) hue-rotate(180deg) saturate(0.25);
}

html.a11y-highlight-links.a11y-highlight-links a {
  outline: 1px solid currentcolor;
  outline-offset: 1px;
  text-decoration: underline;
}

html.a11y-hide-images.a11y-hide-images img {
  visibility: hidden;
}

html.a11y-default-cursor.a11y-default-cursor,
html.a11y-default-cursor.a11y-default-cursor * {
  cursor: default;
}

/* A-/A/A+ root font-size scale — matches `theme/theme.ts`'s fontSizeMultiplier
   (0.85/0.925/1/1.125/1.25) applied to the browser default 16px root. */
html[data-font-step="-2"] {
  font-size: 13.6px;
}

html[data-font-step="-1"] {
  font-size: 14.8px;
}

html[data-font-step="1"] {
  font-size: 18px;
}

html[data-font-step="2"] {
  font-size: 20px;
}