/* Accessibility Panel Styles */
.accessibility-panel {
  position: fixed;
  top: 0;
  right: -350px; /* Hidden by default, increased width */
  width: 320px;
  height: 100%;
  background-color: var(--accessibility-bg-color);
  box-shadow: -4px 0 10px rgba(0, 0, 0, 0.1);
  transition: right 0.3s ease-in-out;
  z-index: 1001;
  border-left: 1px solid var(--accessibility-border-color);
  display: flex;
  flex-direction: column;
}

.accessibility-panel.active {
  right: 0; /* Show panel */
}

[dir="ltr"] .accessibility-panel {
  left: -350px;
  right: auto;
  border-right: 1px solid var(--accessibility-border-color);
  border-left: none;
  box-shadow: 4px 0 10px rgba(0, 0, 0, 0.1);
}

[dir="ltr"] .accessibility-panel.active {
  left: 0;
  right: auto;
}

/* Sticky header for accessibility panel */
.accessibility-panel-header {
  position: sticky;
  top: 0;
  background: var(--accessibility-header-bg-color);
  padding: var(--space-4);
  border-bottom: 1px solid var(--accessibility-border-color);
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accessibility-panel-header h3 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--accessibility-title-color);
}

.accessibility-close-btn {
  background: none;
  border: none;
  color: var(--accessibility-x-btn-color);
  font-size: var(--text-lg);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.accessibility-close-btn:hover {
  background: var(--accessibility-x-btn-bg-hover-color);
  color: var(--accessibility-x-btn-hover-color);
}

/* Scrollable content area */
.accessibility-panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--accessibility-scrollbar-color-1)
    var(--accessibility-scrollbar-color-2);
}

/* Webkit scrollbar styling for better visibility */
.accessibility-panel-content::-webkit-scrollbar {
  width: 8px;
}

.accessibility-panel-content::-webkit-scrollbar-track {
  background: var(--accessibility-scrollbar-track);
  border-radius: 4px;
}

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

.accessibility-panel-content::-webkit-scrollbar-thumb:hover {
  background: var(--accessibility-scrollbar-thumb-hover);
}

/* Sticky footer for reset button */
.accessibility-panel-footer {
  position: sticky;
  bottom: 0;
  background-color: var(--accessibility-footer-bg-color);
  padding: 10px 20px 20px 20px;
  border-top: 1px solid var(--accessibility-border-color);
  z-index: 2;
}

.accessibility-options {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Accessibility Groups */
.accessibility-group {
  background-color: var(--accessibility-groub-bg-color);
  border-radius: var(--radius-lg);
  padding: 15px;
  border: 1px solid var(--accessibility-groub-border-color);
}

.accessibility-group h4 {
  color: var(--accessibility-groub-title-color);
  font-size: 1rem;
  margin-bottom: 12px;
  text-align: center;
  font-weight: 600;
  border-bottom: 1px solid var(--accessibility-border-color);
  padding-bottom: 8px;
}

.accessibility-group-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}

/* Accessibility Option Buttons - Small Boxes */
.accessibility-option-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 8px;
  background-color: var(--accessibility-btn-bg-color);
  color: var(--accessibility-btn-txt-color);
  border: 2px solid var(--accessibility-btn-border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.3s ease;
  text-align: center;
  min-height: 80px;
  position: relative;
  overflow: hidden;
}

.accessibility-option-btn i {
  font-size: 1.4rem;
  color: var(--accessibility-btn-icon-color);
  transition: all 0.3s ease;
}

.accessibility-option-btn span {
  line-height: 1.2;
  font-size: 0.75rem;
}

.accessibility-option-btn:hover {
  background-color: var(--accessibility-btn-bg-hover-color);
  border-color: var(--accessibility-btn-border-hover-color);
  color: var(--accessibility-btn-txt-hover-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.accessibility-option-btn:hover i {
  color: var(--accessibility-btn-icon-hover-color);
  transform: scale(1.1);
}

.accessibility-option-btn.active {
  background-color: var(--accessibility-btn-active-bg-color);
  color: var(--accessibility-btn-active-txt-color);
  border-color: var(--accessibility-btn-active-border-color);
  box-shadow: var(--shadow-md);
}

.accessibility-option-btn.active i {
  color: var(--accessibility-btn-active-icon-color);
}

.accessibility-option-btn.active::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    var(--accessibility-btn-active-before),
    transparent 70%
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Specific Accessibility Effects */

/* High Contrast - Fixed to preserve scrollbar */
body.high-contrast {
  filter: contrast(200%);
}

/* Preserve scrollbar visibility in high contrast mode */
body.high-contrast ::-webkit-scrollbar {
  filter: contrast(50%) !important;
}

body.high-contrast ::-webkit-scrollbar-track {
  background: var(--contrast-scrollbar-track-color) !important;
}

body.high-contrast ::-webkit-scrollbar-thumb {
  background: var(--contrast-scrollbar-track-thumb) !important;
}

/* Ensure accessibility panel scrollbar remains visible */
body.high-contrast .accessibility-panel-content::-webkit-scrollbar {
  filter: none !important;
  width: 8px !important;
}

body.high-contrast .accessibility-panel-content::-webkit-scrollbar-track {
  background: var(--gray-200) !important;
}

body.high-contrast .accessibility-panel-content::-webkit-scrollbar-thumb {
  background: var(--primary-color) !important;
}

/* Invert Colors */
body.invert-colors {
  filter: invert(100%);
}

/* Grayscale */
body.grayscale {
  filter: grayscale(100%);
}

/* Reading Mask */
body.reading-mask::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5); /* Dark overlay */
  pointer-events: none; /* Allow interaction with elements beneath */
  z-index: 999; /* Below accessibility panel, above content */
}

body.reading-mask::after {
  content: "";
  position: fixed;
  top: 50%;
  left: 0;
  width: 100%;
  height: 50px; /* Height of the "reading line" */
  background-color: rgba(255, 255, 255, 0.2); /* Light transparent line */
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 1000;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

/* Highlight Links */
body.highlight-links a {
  outline: 3px solid var(--accessibility-links-highlight-color) !important;
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Reading Guide - Dynamic ruler that follows mouse */
.reading-guide {
  position: fixed;
  left: 0;
  width: 100%;
  height: 50px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 20%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0.1) 80%,
    transparent 100%
  );
  border-top: 2px solid rgba(255, 255, 255, 0.6);
  border-bottom: 2px solid rgba(255, 255, 255, 0.6);
  pointer-events: none;
  z-index: 999;
  transition: top 0.1s ease-out;
  box-shadow: 0 -10px 20px rgba(0, 0, 0, 0.3), 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* Prevent accessibility panel from being affected by invert colors */
body.invert-colors .accessibility-panel {
  filter: invert(100%) hue-rotate(180deg);
}

/* Reset button specific styling */
.accessibility-option-btn.reset-btn {
  background-color: var(--accessibility-btn-reset-bg);
  color: var(--accessibility-btn-reset-txt);
  border-color: var(--accessibility-btn-reset-border);
}

.accessibility-option-btn.reset-btn:hover {
  background-color: var(--accessibility-btn-reset-bg-hover);
  border-color: var(--accessibility-btn-reset-txt-hover);
  color: var(--accessibility-btn-reset-border-hover);
}

.accessibility-option-btn.reset-btn i {
  color: var(--accessibility-btn-reset-icon);
}

.accessibility-option-btn.reset-btn:hover i {
  color: var(--accessibility-btn-reset-icon-hover);
}

/* Text Spacing */
body.text-spacing * {
  letter-spacing: 0.12em !important;
  word-spacing: 0.16em !important;
}

/* Line Height */
body.line-height * {
  line-height: 1.8 !important;
}

/* Content Scaling */
body.content-scaling {
  zoom: 1.2;
}

/* Reduce Motion */
body.reduce-motion *,
body.reduce-motion *::before,
body.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

/* Focus Highlight */
body.focus-highlight *:focus {
  outline: 4px solid var(--accessibility-foucs-color) !important;
  outline-offset: 2px !important;
  box-shadow: 0 0 0 6px rgba(255, 107, 53, 0.3) !important;
}

/* Cursor Size */
body.cursor-size,
body.cursor-size * {
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'><polygon points='0,0 0,24 8,18 14,26 18,24 12,16 24,16' fill='black'/><polygon points='2,2 2,20 6,17 10,23 12,22 8,16 20,16' fill='white'/></svg>")
      0 0,
    auto !important;
}

/* Font Size Adjustments - Fixed Implementation */
body.font-increase {
  font-size: 1.15em !important; /* Increase base font size */
}

body.font-decrease {
  font-size: 0.85em !important; /* Decrease base font size */
}

/* Ensure font size changes apply to all text elements */
body.font-increase *,
body.font-increase .readable-text {
  font-size: inherit;
}

body.font-decrease *,
body.font-decrease .readable-text {
  font-size: inherit;
}

/* Mobile Responsiveness for Accessibility Panel */
@media (max-width: 768px) {
  .accessibility-panel {
    width: 280px;
    right: -280px;
  }

  [dir="ltr"] .accessibility-panel {
    left: -280px;
  }

  .accessibility-group-items {
    grid-template-columns: repeat(2, 1fr);
  }

  .accessibility-option-btn {
    min-height: 70px;
    padding: 10px 6px;
  }

  .accessibility-option-btn i {
    font-size: 1.2rem;
  }

  .accessibility-option-btn span {
    font-size: 0.7rem;
  }
}

@media (max-width: 480px) {
  .accessibility-panel {
    width: 100%;
    right: -100%;
    border-radius: 0;
    box-shadow: none;
    padding: 15px;
  }

  [dir="ltr"] .accessibility-panel {
    left: -100%;
  }

  .accessibility-panel.active {
    right: 0;
    left: 0;
  }

  .accessibility-group-items {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .accessibility-option-btn {
    font-size: 0.75rem;
    padding: 8px 4px;
    min-height: 60px;
  }

  .accessibility-option-btn i {
    font-size: 1.1rem;
  }

  .accessibility-option-btn span {
    font-size: 0.65rem;
  }
}