/* === Accessibility Utilities === */

/* === 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;
}

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

/* === Focus Management === */
.focus-visible-only {
  outline: none;
}

.focus-visible-only:focus-visible {
  outline: 3px solid var(--color-adobe-red);
  outline-offset: 2px;
}

/* Enhanced Focus Indicators */
.focus-ring {
  transition: box-shadow var(--timing-fast) var(--ease-out);
}

.focus-ring:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(225, 37, 27, 0.3);
}

.focus-ring:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(225, 37, 27, 0.3);
}

/* === Skip Links === */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-adobe-red);
  color: var(--text-inverse);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-md);
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  z-index: var(--z-toast);
  transition: top var(--timing-base) var(--ease-out);
}

.skip-link:focus {
  top: 6px;
  outline: 3px solid var(--text-inverse);
  outline-offset: 2px;
}

/* === High Contrast Mode Support === */
@media (prefers-contrast: high) {
  .btn {
    border-width: var(--border-width-medium);
    border-style: solid;
  }
  
  .btn-primary {
    border-color: var(--text-inverse);
  }
  
  .btn-secondary {
    border-color: var(--color-adobe-red);
  }
  
  .card {
    border-width: var(--border-width-medium);
  }
  
  .nav-brand {
    color: var(--text-primary);
    background: none;
    -webkit-text-fill-color: initial;
  }
  
  .section-title {
    color: var(--text-primary);
    background: none;
    -webkit-text-fill-color: initial;
  }
}

/* === 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;
  }
  
  .persona-content {
    transition: none;
    transform: none;
  }
  
  .btn:hover {
    transform: none;
  }
  
  .card:hover {
    transform: none;
  }
  
  .progress-item {
    transition: none;
  }
  
  .nav-mobile-menu {
    transition: none;
  }
  
  /* Disable all animations */
  .animate,
  .fade-in,
  .fade-out,
  .scale-in,
  .slide-in-up,
  .bounce,
  .pulse,
  .shake,
  .rotate,
  .spin {
    animation: none !important;
  }
  
  /* Remove hover effects that use transform */
  .hover-lift:hover,
  .hover-scale:hover,
  .hover-rotate:hover {
    transform: none !important;
  }
}

/* === Color Scheme Preferences === */
@media (prefers-color-scheme: dark) {
  /* Optional: Define dark mode overrides if implementing dark theme */
  .respect-color-scheme {
    color-scheme: light dark;
  }
}

/* === Touch and Pointer Support === */
@media (pointer: coarse) {
  /* Larger touch targets for touch devices */
  .btn {
    min-height: 44px;
    padding: var(--space-lg) var(--space-xl);
  }
  
  .progress-item {
    min-height: 44px;
    padding: var(--space-md) var(--space-lg);
  }
  
  .nav-toggle {
    min-height: 44px;
    min-width: 44px;
    padding: var(--space-md);
  }
  
  .nav-mobile-item {
    min-height: 44px;
    padding: var(--space-lg);
  }
  
  input[type="checkbox"],
  input[type="radio"] {
    min-width: 20px;
    min-height: 20px;
  }
}

/* === Keyboard Navigation === */
.keyboard-nav {
  /* Enhanced focus indicators when navigating with keyboard */
}

.keyboard-nav *:focus {
  outline: 3px solid var(--color-adobe-red);
  outline-offset: 2px;
}

.keyboard-nav .btn:focus,
.keyboard-nav .progress-item:focus {
  box-shadow: 0 0 0 3px rgba(225, 37, 27, 0.3);
}

/* === Text Size and Zoom Support === */
@media (min-resolution: 120dpi) {
  /* Ensure readability at high zoom levels */
  body {
    font-size: calc(var(--font-size-base) * 1.1);
  }
  
  .btn {
    min-height: 48px;
  }
}

/* === Aria Live Regions === */
.aria-live-polite {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.status-message {
  padding: var(--space-md);
  border-radius: var(--border-radius-md);
  margin: var(--space-md) 0;
  font-weight: var(--font-weight-medium);
}

.status-success {
  background: rgba(40, 167, 69, 0.1);
  border: var(--border-width-thin) solid var(--color-success);
  color: var(--color-success);
}

.status-error {
  background: rgba(220, 53, 69, 0.1);
  border: var(--border-width-thin) solid var(--color-error);
  color: var(--color-error);
}

.status-warning {
  background: rgba(255, 193, 7, 0.1);
  border: var(--border-width-thin) solid var(--color-warning);
  color: var(--color-warning);
}

.status-info {
  background: rgba(23, 162, 184, 0.1);
  border: var(--border-width-thin) solid var(--color-info);
  color: var(--color-info);
}

/* === Form Accessibility === */
.form-field-error {
  border-color: var(--color-error);
}

.form-field-error:focus {
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.3);
}

.error-message {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.error-message::before {
  content: '⚠️';
  font-size: var(--font-size-sm);
}

.success-message {
  color: var(--color-success);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.success-message::before {
  content: '✅';
  font-size: var(--font-size-sm);
}

/* === Navigation Accessibility === */
.nav-landmark {
  /* Ensures navigation landmarks are properly identified */
}

.main-landmark {
  /* Ensures main content landmark is properly identified */
}

/* === Content Accessibility === */
.content-region {
  /* Ensures content regions are properly identified */
}

/* === Interactive Element States === */
.interactive-element {
  cursor: pointer;
}

.interactive-element:disabled,
.interactive-element[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.6;
  pointer-events: none;
}

/* === Loading and Busy States === */
.loading-content {
  position: relative;
}

.loading-content::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.loading-content[aria-busy="true"]::after {
  content: 'Loading...';
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

/* === High Contrast Focus Indicators === */
@media (-ms-high-contrast: active) {
  .btn:focus,
  .progress-item:focus,
  input:focus,
  textarea:focus,
  select:focus {
    outline: 2px solid;
    outline-offset: 2px;
  }
}

/* === Windows High Contrast Mode === */
@media (-ms-high-contrast: black-on-white) {
  .section-title {
    color: black;
    background: none;
    -webkit-text-fill-color: initial;
  }
  
  .nav-brand {
    color: black;
    background: none;
    -webkit-text-fill-color: initial;
  }
}

@media (-ms-high-contrast: white-on-black) {
  .section-title {
    color: white;
    background: none;
    -webkit-text-fill-color: initial;
  }
  
  .nav-brand {
    color: white;
    background: none;
    -webkit-text-fill-color: initial;
  }
}