/* 508c Accessibility Compliance Styles */

/* Skip Navigation Link - Hidden by default, visible on focus */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000;
  color: #fff;
  padding: 8px;
  text-decoration: none;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
  color: #fff;
}

/* Focus Indicators - Enhanced for keyboard navigation */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 3px solid #0078D4;
  outline-offset: 2px;
}

/* Ensure interactive elements are keyboard accessible */
[tabindex="-1"]:focus {
  outline: none;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --primary: #0078D4;
    --accent: #00C853;
    --text: #FFFFFF;
    --bg: #000000;
  }
}

/* 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;
  }
}

/* Minimum Touch Target Size (44x44px per WCAG) */
button,
a.btn,
.nav-link,
.nav-card {
  min-height: 44px;
  min-width: 44px;
}

/* 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;
}

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

/* Ensure sufficient color contrast */
.text-low-contrast {
  color: #e0e0e0 !important;
}

/* Link Accessibility */
a:not([href]) {
  cursor: default;
}

a[aria-disabled="true"] {
  pointer-events: none;
  opacity: 0.6;
}

/* Form Accessibility */
label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

input[required],
select[required],
textarea[required] {
  border-left: 3px solid #0078D4;
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border: 2px solid #ff4444;
}

.error-message {
  color: #ff4444;
  font-size: 0.875rem;
  margin-top: 0.25rem;
  display: block;
}

/* Image Alt Text Fallback */
img:not([alt]) {
  border: 2px dashed #ff4444;
}

/* Ensure landmarks are properly identified */
header[role="banner"],
nav[role="navigation"],
main[role="main"],
aside[role="complementary"],
footer[role="contentinfo"] {
  display: block;
}

/* Modal/Dialog Accessibility */
[role="dialog"],
[role="alertdialog"] {
  position: fixed;
  z-index: 10000;
}

[role="dialog"]:focus {
  outline: none;
}

/* Live Region for Dynamic Content */
[role="status"],
[role="alert"] {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

[role="status"]:focus,
[role="alert"]:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
}

/* Table Accessibility */
table {
  border-collapse: collapse;
}

th {
  font-weight: 600;
  text-align: left;
}

/* Ensure text is resizable */
html {
  font-size: 100%;
}

body {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* Keyboard Navigation Indicators */
.keyboard-only:focus {
  outline: 3px solid #0078D4;
  outline-offset: 2px;
}

/* Error States */
.has-error input,
.has-error select,
.has-error textarea {
  border-color: #ff4444;
}

.has-error .error-message {
  display: block;
}

/* Success States */
.has-success input,
.has-success select,
.has-success textarea {
  border-color: #00C853;
}

/* Loading States */
[aria-busy="true"] {
  cursor: wait;
}

[aria-busy="true"]::before {
  content: "Loading...";
  position: absolute;
  left: -10000px;
}