/* Accessibility Enhancements */

/* Skip Links */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #3333B2;
  color: white;
  padding: 8px 16px;
  z-index: 10000;
  transition: top 0.2s;
  text-decoration: none;
  font-weight: bold;
}

.skip-link:focus {
  top: 0;
}

/* Focus indicators */
*:focus {
  outline: 2px solid #3333B2;
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid #3333B2;
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn, button {
    border: 2px solid currentColor !important;
  }

  a {
    text-decoration: underline !important;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Code copy button styles */
pre {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: #3333B2;
  color: white;
  border: none;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  opacity: 0;
  transition: opacity 0.2s;
}

pre:hover .copy-btn,
.copy-btn:focus {
  opacity: 1;
}

.copy-btn.copied {
  background: #2CA02C;
}

/* Reading time badge */
.reading-time {
  background: #f0f0f0;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.85rem;
  color: #666;
  margin-left: 1rem;
}

/* Progress indicator */
.progress-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: #3333B2;
  z-index: 9999;
  transition: width 0.1s;
}

/* Auto TOC styles */
.auto-toc {
  position: fixed;
  right: 20px;
  top: 100px;
  width: 200px;
  max-height: calc(100vh - 150px);
  overflow-y: auto;
  background: white;
  border-left: 2px solid #3333B2;
  padding: 1rem;
  font-size: 0.85rem;
}

.auto-toc a {
  display: block;
  padding: 4px 0;
  color: #666;
  text-decoration: none;
}

.auto-toc a:hover,
.auto-toc a.active {
  color: #3333B2;
}

@media (max-width: 1200px) {
  .auto-toc {
    display: none;
  }
}

/* Keyboard shortcut overlay */
.keyboard-help {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  z-index: 10000;
  display: none;
}

.keyboard-help.active {
  display: block;
}

.keyboard-help kbd {
  background: #f0f0f0;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
  font-family: monospace;
}

/* Print Stylesheets */
@media print {
  /* Hide navigation and non-essential elements */
  nav,
  .site-nav,
  .search-container,
  .skip-link,
  .copy-btn,
  .auto-toc,
  .keyboard-help,
  .progress-indicator,
  .btn,
  button:not(.print-btn),
  footer,
  .no-print {
    display: none !important;
  }

  /* Reset colors for print */
  body {
    background: white !important;
    color: black !important;
    font-size: 12pt;
    line-height: 1.5;
  }

  /* Ensure links are visible */
  a {
    color: black !important;
    text-decoration: underline;
  }

  /* Show URLs after links */
  a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    font-style: italic;
  }

  /* Internal links don't need URLs */
  a[href^="#"]:after,
  a[href^="/"]:after {
    content: "";
  }

  /* Page breaks */
  h1, h2, h3 {
    page-break-after: avoid;
    page-break-inside: avoid;
  }

  pre, code, blockquote, table, figure, img {
    page-break-inside: avoid;
  }

  /* Reference cards specific */
  .ref-card {
    page-break-after: always;
    border: 1px solid #333 !important;
  }

  .ref-card:last-child {
    page-break-after: auto;
  }

  /* Ensure code blocks are readable */
  pre {
    background: #f5f5f5 !important;
    border: 1px solid #ccc !important;
    padding: 1rem !important;
    white-space: pre-wrap;
    word-wrap: break-word;
  }

  code {
    background: #f5f5f5 !important;
    color: black !important;
  }

  /* Quiz answers hidden in print */
  .quiz-answer {
    display: none !important;
  }

  /* Table formatting */
  table {
    border-collapse: collapse;
    width: 100%;
  }

  th, td {
    border: 1px solid #333;
    padding: 0.5rem;
    text-align: left;
  }

  th {
    background: #f0f0f0 !important;
  }

  /* Header info for print */
  @page {
    margin: 2cm;
  }

  /* Print header */
  .main-content::before {
    content: "Agentic AI Course - Digital AI Finance";
    display: block;
    text-align: center;
    font-weight: bold;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #333;
  }
}

/* Accessibility statement page styles */
.a11y-feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.a11y-feature-icon {
  font-size: 1.5rem;
  color: #3333B2;
}

.a11y-checklist {
  list-style: none;
  padding: 0;
}

.a11y-checklist li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.a11y-checklist li::before {
  content: "Y";
  position: absolute;
  left: 0;
  color: #2CA02C;
  font-weight: bold;
}

/* Chart alt text display */
.chart-alt-text {
  font-size: 0.85rem;
  color: #666;
  font-style: italic;
  margin-top: 0.5rem;
}