/* Accessibility Enhancements */

/* Screen reader only content */
.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;
}

/* Screen reader only - becomes visible when focused */
.sr-only.focus\:not-sr-only:focus {
  position: static;
  width: auto;
  height: auto;
  padding: inherit;
  margin: inherit;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Keyboard focus indicators */
*:focus {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* Enhanced focus for interactive elements */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Skip link styling */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #3b82f6;
  color: white;
  padding: 8px;
  text-decoration: none;
  z-index: 100;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  * {
    border-color: currentColor !important;
  }

  a {
    text-decoration: underline;
  }

  button {
    border: 2px solid currentColor !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;
  }
}

/* Keyboard navigation indicators */
body.keyboard-navigation-enabled *:focus {
  outline: 3px solid #3b82f6;
  outline-offset: 2px;
}

/* ARIA live region - visually hidden but available to screen readers */
[role="status"],
[role="alert"],
[aria-live] {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Focus visible polyfill */
.focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}