/* 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: 0;
}

/* Focus styles for accessibility */
button:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: #667eea;
  color: white;
  padding: 8px;
  text-decoration: none;
  z-index: 1000;
  border-radius: 4px;
}

.skip-link:focus {
  top: 6px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border: 2px solid currentColor;
  }
  
  .nav-link {
    border-bottom: 2px solid transparent;
  }
  
  .nav-link:hover,
  .nav-link:focus {
    border-bottom-color: currentColor;
  }
}

/* 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;
  }
}

/* Ensure sufficient color contrast */
.text-muted {
  color: #6c757d !important;
}

/* Button accessibility improvements */
.btn {
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Mobile menu accessibility */
.mobile_menu_btn {
  min-height: 44px;
  min-width: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Dropdown accessibility */
.dropdown-menu {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.dropdown-menu.show {
  display: block;
}

/* Focus management for dropdowns */
.dropdown:focus-within .dropdown-menu {
  display: block;
}