/* Accessibility Improvements */

/* 1. Improve link color contrast for better readability */
:root {
  /* Enhanced contrast for links - ensures 4.5:1 ratio on white background */
  --link-col-accessible: #0056b3;
  --hover-col-accessible: #003d82;
}

/* Override link colors for better contrast */
a:not(.btn):not(.navbar-brand):not(.nav-link):not(.dropdown-item) {
  color: var(--link-col-accessible, #0056b3);
}

a:not(.btn):not(.navbar-brand):not(.nav-link):not(.dropdown-item):hover,
a:not(.btn):not(.navbar-brand):not(.nav-link):not(.dropdown-item):focus {
  color: var(--hover-col-accessible, #003d82);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

/* 2. Increase touch target sizes for mobile (minimum 48x48px) */
.navbar-toggler {
  min-width: 48px;
  min-height: 48px;
  padding: 12px;
}

/* Touch target size for nav links - only enforce minimum height */
.nav-link {
  min-height: 48px;
  display: flex;
  align-items: center;
}

/* Only adjust padding on mobile for better touch targets */
@media (max-width: 1199.98px) {
  .navbar-custom .navbar-nav .nav-link {
    padding-top: 16px !important;
    padding-bottom: 16px !important;
  }
}

.footer-links a {
  min-width: 48px;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}

.list-inline-item {
  margin: 8px !important; /* Add spacing between touch targets */
}

/* 3. Improve focus indicators for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 3px solid #0056b3;
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.2);
}

/* Skip to main content link for keyboard users */
.skip-to-main {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 1em;
  background-color: #0056b3;
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.skip-to-main:focus {
  left: 50%;
  transform: translateX(-50%);
  top: 10px;
}

/* 4. Ensure sufficient spacing between interactive elements */
.navbar-nav .nav-item + .nav-item {
  margin-left: 8px;
}

/* Fix: Ensure navbar items stay above avatar */
.navbar-custom .navbar-collapse {
  position: relative;
  z-index: 10;
}

.navbar-custom .avatar-container {
  z-index: 1;
}

@media (max-width: 1199.98px) {
  .navbar-nav .nav-item {
    margin: 8px 0;
  }
}

/* 5. Improve button contrast and visibility */
.btn-primary {
  background-color: #0056b3;
  border-color: #0056b3;
  font-weight: 600;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: #003d82;
  border-color: #003d82;
}

/* 6. Better visible focus for form elements */
.form-control:focus {
  border-color: #0056b3;
  box-shadow: 0 0 0 0.2rem rgba(0, 86, 179, 0.25);
}

/* 7. Improve readability of navbar on mobile */
@media (max-width: 1199.98px) {
  .navbar-custom .navbar-nav .nav-link {
    font-size: 1.1rem;
  }
}

/* 8. Enhance dropdown contrast */
.dropdown-menu {
  border: 2px solid #dee2e6;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.dropdown-item:focus,
.dropdown-item:hover {
  background-color: #0056b3;
  color: white;
}

/* 9. Improve code block contrast */
pre,
code {
  background-color: #f5f5f5;
  border: 1px solid #ddd;
}

code {
  color: #d63384;
  padding: 2px 6px;
}

/* 10. Better visibility for selected text */
::selection {
  background-color: #0056b3;
  color: white;
}

::-moz-selection {
  background-color: #0056b3;
  color: white;
}

/* 11. Ensure proper contrast for footer links */
footer a {
  color: #0056b3;
  font-weight: 500;
}

footer a:hover,
footer a:focus {
  color: #003d82;
  text-decoration: underline;
}

/* 12. Improve visibility of social media icons */
.footer-links .fa-stack {
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
  transition: transform 0.2s ease;
}

.footer-links a:hover .fa-stack,
.footer-links a:focus .fa-stack {
  transform: scale(1.1);
}

/* 13. Better spacing for readability */
p {
  line-height: 1.7;
  margin-bottom: 1.2em;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 1.5em;
  margin-bottom: 0.75em;
  line-height: 1.3;
}

/* 14. Improve table accessibility */
table {
  border-collapse: collapse;
  width: 100%;
}

th {
  background-color: #f5f5f5;
  font-weight: 600;
  text-align: left;
}

th, td {
  border: 1px solid #ddd;
  padding: 12px;
}

tr:nth-child(even) {
  background-color: #fafafa;
}

/* 15. Ensure images don't cause layout shift */
img {
  height: auto;
  max-width: 100%;
}

/* Add aspect ratio boxes if needed */
.img-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
}

.img-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 16. Improve search button visibility and size */
#nav-search-link {
  min-width: 48px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 17. Better visual hierarchy */
.post-heading h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

@media (max-width: 767.98px) {
  .post-heading h1 {
    font-size: 2rem;
  }
}

/* 18. Improve pagination contrast */
.pagination .page-link {
  color: #0056b3;
  border: 2px solid #dee2e6;
  min-width: 48px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 4px;
}

.pagination .page-link:hover,
.pagination .page-link:focus {
  background-color: #0056b3;
  color: white;
  border-color: #0056b3;
}

.pagination .page-item.active .page-link {
  background-color: #0056b3;
  border-color: #0056b3;
}

/* 19. Ensure proper heading hierarchy */
.intro-header .page-heading h1,
.intro-header .post-heading h1 {
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

/* 20. Improve blockquote visibility */
blockquote {
  border-left: 4px solid #0056b3;
  padding-left: 1.5rem;
  margin-left: 0;
  font-style: italic;
  color: #404040;
  background-color: #f9f9f9;
  padding: 1rem 1.5rem;
}

/* Reduced motion support for users with vestibular disorders */
@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;
  }
}

/* High contrast mode adjustments */
@media (prefers-contrast: high) {
  a {
    text-decoration: underline;
  }
  
  button,
  .btn {
    border-width: 3px;
  }
}

/* Dark mode support (if implementing later) */
@media (prefers-color-scheme: dark) {
  /* Keep light mode for now, but structure is ready */
}