/* ============================================================================
   Accessibility Utilities
   Skip links, focus states, keyboard navigation styles
   ============================================================================ */

/* Skip to main content link */
.skip-to-main {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 100;
  border-radius: var(--border-radius-md);
}

.skip-to-main:focus {
  top: 0;
}

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: more) {
  a,
  button,
  input[type="button"],
  input[type="submit"] {
    text-decoration: underline;
  }

  :focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
  }
}

/* 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;
  }
}

/* Dark mode support (if user prefers) */
@media (prefers-color-scheme: dark) {
  /* Can be customized in the future if dark mode is supported */
}

/* Forced colors mode support (accessibility mode) */
@media (forced-colors: active) {
  a,
  button {
    border: 1px solid;
  }

  a:focus-visible,
  button:focus-visible {
    outline: 2px solid;
  }
}

/* Screen reader only content */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.sr-only-focusable:focus {
  position: static !important;
  width: auto !important;
  height: auto !important;
  padding: inherit !important;
  margin: inherit !important;
  overflow: visible !important;
  clip: auto !important;
  white-space: normal !important;
}

/* Ensure interactive elements are keyboard accessible */
button,
a,
input,
textarea,
select {
  min-width: var(--size-touch-target);
  min-height: var(--size-touch-target);
}

/* Better link focus indication */
a:focus,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-md);
}

/* Better button focus indication */
button:focus,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Form focus states */
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 0;
  border-color: var(--color-primary);
}

/* Improve form error focus */
input:invalid:focus,
textarea:invalid:focus,
select:invalid:focus {
  outline-color: var(--color-error);
}