/**
 * Pageify — Accessibility Panel Styles
 * Includes panel UI, feature toggles, and accessibility overrides.
 * GDPR-first: no tracking, localStorage only.
 */

/* ─────────────────────────────────────────────────────────
   FLOATING TOGGLE BUTTON
   ───────────────────────────────────────────────────────── */

#pgf-accessibility-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9998;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--pgf-primary);
  color: var(--pgf-text-inverse);
  border: none;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--pgf-shadow-modal);
  transition: background var(--pgf-transition), transform var(--pgf-transition);
}

#pgf-accessibility-toggle:hover {
  background: var(--pgf-primary-hover);
  transform: scale(1.05);
}

#pgf-accessibility-toggle:active {
  transform: scale(0.98);
}

#pgf-accessibility-toggle:focus {
  outline: 3px solid var(--pgf-border-focus);
  outline-offset: 2px;
}

/* ─────────────────────────────────────────────────────────
   PANEL CONTAINER
   ───────────────────────────────────────────────────────── */

#pgf-accessibility-panel {
  position: fixed;
  right: -320px;
  top: 0;
  width: 320px;
  height: 100vh;
  background: var(--pgf-bg);
  color: var(--pgf-text);
  z-index: 9999;
  box-shadow: var(--pgf-shadow-modal);
  transition: right var(--pgf-transition-slow);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--pgf-border);
}

#pgf-accessibility-panel.open {
  right: 0;
}

#pgf-accessibility-panel:focus {
  outline: none;
}

/* ─────────────────────────────────────────────────────────
   PANEL HEADER
   ───────────────────────────────────────────────────────── */

.pgf-a11y-panel-close {
  position: sticky;
  top: 0;
  right: 0;
  align-self: flex-end;
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--pgf-text);
  cursor: pointer;
  padding: var(--pgf-space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.pgf-a11y-panel-close:hover {
  color: var(--pgf-primary);
}

.pgf-a11y-panel-close:focus {
  outline: 2px solid var(--pgf-border-focus);
  outline-offset: -2px;
}

.pgf-a11y-panel-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0 var(--pgf-space-md) var(--pgf-space-lg);
  padding: 0;
  color: var(--pgf-text);
}

/* ─────────────────────────────────────────────────────────
   PANEL CONTENT
   ───────────────────────────────────────────────────────── */

.pgf-a11y-panel-content {
  flex: 1;
  padding: 0 var(--pgf-space-md) var(--pgf-space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--pgf-space-lg);
}

/* ─────────────────────────────────────────────────────────
   SECTION STYLING
   ───────────────────────────────────────────────────────── */

.pgf-a11y-section {
  display: flex;
  flex-direction: column;
  gap: var(--pgf-space-sm);
}

.pgf-a11y-section-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--pgf-text-secondary);
  margin: 0;
  padding: 0;
}

.pgf-a11y-reset-section {
  margin-top: auto;
  padding-top: var(--pgf-space-lg);
  border-top: 1px solid var(--pgf-border);
}

/* ─────────────────────────────────────────────────────────
   BUTTON GROUPS (Font Size, Line Spacing)
   ───────────────────────────────────────────────────────── */

.pgf-a11y-button-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--pgf-space-xs);
}

.pgf-a11y-btn {
  padding: var(--pgf-space-sm) var(--pgf-space-xs);
  border: 1px solid var(--pgf-border);
  border-radius: var(--pgf-radius-sm);
  background: var(--pgf-bg-alt);
  color: var(--pgf-text);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--pgf-transition);
  text-align: center;
}

.pgf-a11y-btn:hover {
  background: var(--pgf-bg-hover);
  border-color: var(--pgf-primary);
}

.pgf-a11y-btn:focus {
  outline: 2px solid var(--pgf-border-focus);
  outline-offset: -1px;
}

.pgf-a11y-btn.active {
  background: var(--pgf-primary);
  color: var(--pgf-text-inverse);
  border-color: var(--pgf-primary);
}

.pgf-a11y-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ─────────────────────────────────────────────────────────
   TOGGLE SWITCH
   ───────────────────────────────────────────────────────── */

.pgf-a11y-toggle {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  position: relative;
}

.pgf-a11y-toggle-input {
  appearance: none;
  -webkit-appearance: none;
  width: 44px;
  height: 24px;
  background: var(--pgf-border);
  border-radius: 12px;
  cursor: pointer;
  transition: background var(--pgf-transition);
  border: none;
  padding: 0;
  margin: 0;
}

.pgf-a11y-toggle-input:checked {
  background: var(--pgf-accent);
}

.pgf-a11y-toggle-input:focus {
  outline: 2px solid var(--pgf-border-focus);
  outline-offset: 2px;
}

.pgf-a11y-toggle-slider {
  position: absolute;
  left: 2px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background: var(--pgf-bg, white);
  border-radius: 50%;
  transition: left var(--pgf-transition);
  pointer-events: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.pgf-a11y-toggle-input:checked ~ .pgf-a11y-toggle-slider {
  left: 22px;
}

/* ─────────────────────────────────────────────────────────
   TEXT-TO-SPEECH CONTROLS
   ───────────────────────────────────────────────────────── */

.pgf-a11y-tts-info {
  font-size: 12px;
  color: var(--pgf-text-secondary);
  margin: 0;
  padding: var(--pgf-space-sm);
  background: var(--pgf-bg-alt);
  border-radius: var(--pgf-radius-sm);
  line-height: 1.4;
}

.pgf-a11y-tts-controls {
  display: flex;
  gap: var(--pgf-space-xs);
}

.pgf-a11y-tts-btn {
  flex: 1;
  padding: var(--pgf-space-sm);
  font-size: 12px;
}

.pgf-a11y-tts-btn i {
  margin-right: 4px;
}

.pgf-a11y-tts-sliders {
  display: flex;
  flex-direction: column;
  gap: var(--pgf-space-md);
}

.pgf-a11y-slider-label {
  display: flex;
  align-items: center;
  font-size: 12px;
  font-weight: 500;
  color: var(--pgf-text-secondary);
  gap: var(--pgf-space-sm);
}

.pgf-a11y-slider {
  flex: 1;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--pgf-border);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.pgf-a11y-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--pgf-primary);
  cursor: pointer;
  transition: background var(--pgf-transition);
}

.pgf-a11y-slider::-webkit-slider-thumb:hover {
  background: var(--pgf-primary-hover);
}

.pgf-a11y-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--pgf-primary);
  border: none;
  cursor: pointer;
  transition: background var(--pgf-transition);
}

.pgf-a11y-slider::-moz-range-thumb:hover {
  background: var(--pgf-primary-hover);
}

.pgf-a11y-slider:focus {
  outline: 2px solid var(--pgf-border-focus);
  outline-offset: 2px;
}

/* ─────────────────────────────────────────────────────────
   RESET BUTTON
   ───────────────────────────────────────────────────────── */

.pgf-a11y-btn-reset {
  width: 100%;
  padding: var(--pgf-space-md);
  background: var(--pgf-danger);
  color: white;
  font-weight: 600;
  border: none;
}

.pgf-a11y-btn-reset:hover {
  background: var(--pgf-danger-hover, #c82333);
}

.pgf-a11y-btn-reset:focus {
  outline: 2px solid var(--pgf-border-focus);
  outline-offset: -2px;
}

/* ─────────────────────────────────────────────────────────
   FONT FACE: OPENDYSLEXIC
   ───────────────────────────────────────────────────────── */

@font-face {
  font-family: 'OpenDyslexic';
  src: url('https://cdnjs.cloudflare.com/ajax/libs/opendyslexic/0.91.1/OpenDyslexic-Regular.otf')
    format('opentype');
  font-weight: normal;
  font-style: normal;
}

/* ─────────────────────────────────────────────────────────
   FEATURE: DYSLEXIA-FRIENDLY FONT
   [data-font="dyslexia"]
   ───────────────────────────────────────────────────────── */

[data-font='dyslexia'],
[data-font='dyslexia'] * {
  font-family: 'OpenDyslexic', var(--pgf-font) !important;
}

/* ─────────────────────────────────────────────────────────
   FEATURE: HIGH CONTRAST MODE
   [data-contrast="high"]
   ───────────────────────────────────────────────────────── */

[data-contrast='high'] {
  --pgf-text: #000000;
  --pgf-text-secondary: #000000;
  --pgf-text-muted: #000000;
  --pgf-bg: #ffffff;
  --pgf-bg-alt: #ffffff;
  --pgf-bg-hover: #f0f0f0;
  --pgf-border: #000000;
  --pgf-border-focus: #000000;
}

[data-contrast='high'] * {
  border-color: #000000 !important;
}

[data-contrast='high'] button,
[data-contrast='high'] a {
  border: 3px solid #000000 !important;
  outline: 1px solid #000000 !important;
}

[data-contrast='high'][data-theme='dark'] {
  --pgf-text: #ffffff;
  --pgf-text-secondary: #ffffff;
  --pgf-text-muted: #ffffff;
  --pgf-bg: #000000;
  --pgf-bg-alt: #000000;
  --pgf-bg-hover: #1a1a1a;
  --pgf-border: #ffffff;
  --pgf-border-focus: #ffffff;
}

[data-contrast='high'][data-theme='dark'] * {
  border-color: #ffffff !important;
}

[data-contrast='high'][data-theme='dark'] button,
[data-contrast='high'][data-theme='dark'] a {
  border: 3px solid #ffffff !important;
  outline: 1px solid #ffffff !important;
}

/* ─────────────────────────────────────────────────────────
   FEATURE: REDUCED ANIMATIONS
   [data-reduced-motion="true"]
   ───────────────────────────────────────────────────────── */

[data-reduced-motion='true'],
[data-reduced-motion='true'] * {
  animation: none !important;
  transition: none !important;
}

/* ─────────────────────────────────────────────────────────
   FEATURE: ENHANCED FOCUS HIGHLIGHT
   [data-a11y-focus="true"]
   ───────────────────────────────────────────────────────── */

[data-a11y-focus='true'] *:focus {
  outline: 3px dashed var(--pgf-border-focus) !important;
  outline-offset: 2px !important;
}

[data-a11y-focus='true'] *:focus:not(:focus-visible) {
  outline: none !important;
}

/* ─────────────────────────────────────────────────────────
   FEATURE: LINE SPACING OVERRIDE
   CSS Variable: --pgf-line-height
   ───────────────────────────────────────────────────────── */

html {
  line-height: var(--pgf-line-height, 1.5);
}

p,
li,
blockquote,
td,
th {
  line-height: var(--pgf-line-height, 1.5);
}

/* ─────────────────────────────────────────────────────────
   DARK MODE SUPPORT FOR PANEL
   ───────────────────────────────────────────────────────── */

[data-theme='dark'] #pgf-accessibility-panel {
  background: var(--pgf-bg);
  color: var(--pgf-text);
  border-left-color: var(--pgf-border);
}

[data-theme='dark'] .pgf-a11y-panel-close {
  color: var(--pgf-text);
}

[data-theme='dark'] .pgf-a11y-panel-close:hover {
  color: var(--pgf-primary);
}

[data-theme='dark'] .pgf-a11y-section-title {
  color: var(--pgf-text-secondary);
}

[data-theme='dark'] .pgf-a11y-btn {
  background: var(--pgf-bg-alt);
  color: var(--pgf-text);
  border-color: var(--pgf-border);
}

[data-theme='dark'] .pgf-a11y-btn:hover {
  background: var(--pgf-bg-hover);
  border-color: var(--pgf-primary);
}

[data-theme='dark'] .pgf-a11y-btn.active {
  background: var(--pgf-primary);
  color: var(--pgf-text-inverse);
  border-color: var(--pgf-primary);
}

[data-theme='dark'] .pgf-a11y-toggle-input {
  background: var(--pgf-border);
}

[data-theme='dark'] .pgf-a11y-toggle-input:checked {
  background: var(--pgf-accent);
}

[data-theme='dark'] .pgf-a11y-toggle-slider {
  background: var(--pgf-text);
}

[data-theme='dark'] .pgf-a11y-tts-info {
  background: var(--pgf-bg-alt);
  color: var(--pgf-text-secondary);
}

[data-theme='dark'] .pgf-a11y-slider {
  background: var(--pgf-border);
}

[data-theme='dark'] .pgf-a11y-slider::-webkit-slider-thumb {
  background: var(--pgf-primary);
}

[data-theme='dark'] .pgf-a11y-slider::-moz-range-thumb {
  background: var(--pgf-primary);
}

/* ─────────────────────────────────────────────────────────
   PRINT: HIDE ACCESSIBILITY UI
   ───────────────────────────────────────────────────────── */

@media print {
  #pgf-accessibility-toggle,
  #pgf-accessibility-panel {
    display: none !important;
  }
}

/* ─────────────────────────────────────────────────────────
   RESPONSIVE: MOBILE ADJUSTMENTS
   ───────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  #pgf-accessibility-toggle {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
    font-size: 20px;
  }

  #pgf-accessibility-panel {
    width: 100vw;
    right: -100vw;
  }

  .pgf-a11y-button-group {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ─────────────────────────────────────────────────────────
   SCROLLBAR STYLING FOR PANEL
   ───────────────────────────────────────────────────────── */

#pgf-accessibility-panel::-webkit-scrollbar {
  width: 8px;
}

#pgf-accessibility-panel::-webkit-scrollbar-track {
  background: transparent;
}

#pgf-accessibility-panel::-webkit-scrollbar-thumb {
  background: var(--pgf-border);
  border-radius: 4px;
}

#pgf-accessibility-panel::-webkit-scrollbar-thumb:hover {
  background: var(--pgf-text-secondary);
}