/* Custom CSS for Andrew Hundt's website */

/*
 * WCAG 2.1 Level AA Compliance:
 * - Link color #0066CC on white: 7.0:1 contrast (passes AA & AAA)
 * - Hover color #004499 on white: >7.0:1 contrast (passes AA & AAA)
 * - Focus indicators: 3px solid outline with 2px offset
 * - Skip navigation link for keyboard users
 * - External link visual indicators
 */

/* Improved typography */
body {
  line-height: 1.7;
  font-size: 16px;
}

/* Better heading hierarchy */
h1 {
  margin-top: 1.5em;
  margin-bottom: 0.75em;
  font-weight: 700;
}

h2 {
  margin-top: 2em;
  margin-bottom: 0.75em;
  font-weight: 600;
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 0.3em;
}

h3 {
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 600;
}

h4 {
  margin-top: 1.25em;
  margin-bottom: 0.5em;
  font-weight: 600;
  font-size: 1.1em;
}

/* Publication entries styling */
.publications h4 {
  margin-top: 1.5em;
  color: #2c3e50;
}

/* Improved link styling */
a {
  color: #0066cc;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #004499;
  text-decoration: underline;
}

/* Better spacing for lists */
ul, ol {
  margin: 1em 0;
  padding-left: 2em;
}

li {
  margin: 0.5em 0;
}

/* Improved paragraph spacing */
p {
  margin: 1em 0;
}

/* Better spacing for sections */
hr {
  margin: 2.5em 0;
  border: none;
  border-top: 1px solid #e0e0e0;
}

/* Code and preformatted text */
code {
  background-color: #f5f5f5;
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.9em;
}

/* Responsive images */
img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* Better blockquote styling */
blockquote {
  border-left: 4px solid #0066cc;
  padding-left: 1em;
  margin: 1.5em 0;
  color: #555;
  font-style: italic;
}

/* Accessibility Enhancements */

/* Skip to main content link - hidden until focused */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  text-decoration: none;
  z-index: 100;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid #fff;
  outline-offset: 2px;
}

/* Clear focus indicators for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 3px solid #0066cc;
  outline-offset: 2px;
}

/* Enhanced focus for social media icons */
.social-icons a {
  /* WCAG 2.2 SC 2.5.8: Minimum target size 24x24px */
  display: inline-block;
  min-width: 24px;
  min-height: 24px;
  /* Center icons within the clickable area */
  text-align: center;
  line-height: 24px;
}

.social-icons a:focus {
  outline: 3px solid #0066cc;
  outline-offset: 4px;
  border-radius: 4px;
}

.social-icons i {
  /* Ensure icons are at least 20px for better visibility */
  font-size: 1.25rem; /* 20px at default 16px base */
  vertical-align: middle;
}

/* Screen reader only text - visually hidden but accessible to screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Visual indicator for external links (opens in new window) */
a[target="_blank"]::after {
  content: " ↗";
  font-size: 0.8em;
  vertical-align: super;
  text-decoration: none;
}

/* Don't show external link indicator on icon-only links */
.social-icons a[target="_blank"]::after,
a.image[target="_blank"]::after {
  content: "";
}

/* Print styles */
@media print {
  a[href]:after {
    content: " (" attr(href) ")";
  }

  h2, h3 {
    page-break-after: avoid;
  }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  h1 {
    font-size: 1.75em;
  }

  h2 {
    font-size: 1.5em;
  }
}