/**
 * @file
 * Accessibility improvements for QRIDA GovCMS Bartik theme.
 */

/* Focus states */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus,
[tabindex]:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
  border-radius: 2px;
}

/* High contrast focus for dark backgrounds */
.bg-dark a:focus,
.bg-dark button:focus,
.bg-dark input:focus,
.bg-dark textarea:focus,
.bg-dark select:focus,
.bg-dark [tabindex]:focus {
  outline-color: var(--qrida-focus-light, #ffffff);
}

/* Skip links */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  z-index: 999999;
  padding: 8px 16px;
  background: var(--qrida-primary, #003c71);
  color: var(--qrida-white, #ffffff);
  text-decoration: none;
  border-radius: 0 0 4px 4px;
  font-weight: 600;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
}

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

.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;
}

/* External link indicators - show icon for links opening in new window */
a[target="_blank"]::after {
  content: "" !important;
  display: inline-block !important;
  width: 0.875em;
  height: 0.875em;
  margin-left: 0.35em;
  vertical-align: middle;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M8.636 3.5a.5.5 0 0 0-.5-.5H1.5A1.5 1.5 0 0 0 0 4.5v10A1.5 1.5 0 0 0 1.5 16h10a1.5 1.5 0 0 0 1.5-1.5V7.864a.5.5 0 0 0-1 0V14.5a.5.5 0 0 1-.5.5h-10a.5.5 0 0 1-.5-.5v-10a.5.5 0 0 1 .5-.5h6.636a.5.5 0 0 0 .5-.5z'/%3E%3Cpath fill-rule='evenodd' d='M16 .5a.5.5 0 0 0-.5-.5h-5a.5.5 0 0 0 0 1h3.793L6.146 9.146a.5.5 0 1 0 .708.708L15 1.707V5.5a.5.5 0 0 0 1 0v-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}

/* White external link icon for dark backgrounds (footer) */
footer a[target="_blank"]::after,
.footer a[target="_blank"]::after,
.bg-dark a[target="_blank"]::after,
[class*="footer"] a[target="_blank"]::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23ffffff' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M8.636 3.5a.5.5 0 0 0-.5-.5H1.5A1.5 1.5 0 0 0 0 4.5v10A1.5 1.5 0 0 0 1.5 16h10a1.5 1.5 0 0 0 1.5-1.5V7.864a.5.5 0 0 0-1 0V14.5a.5.5 0 0 1-.5.5h-10a.5.5 0 0 1-.5-.5v-10a.5.5 0 0 1 .5-.5h6.636a.5.5 0 0 0 .5-.5z'/%3E%3Cpath fill-rule='evenodd' d='M16 .5a.5.5 0 0 0-.5-.5h-5a.5.5 0 0 0 0 1h3.793L6.146 9.146a.5.5 0 1 0 .708.708L15 1.707V5.5a.5.5 0 0 0 1 0v-5z'/%3E%3C/svg%3E") !important;
}

/* Hide external link icon on buttons, navigation, and social links */
a.btn::after,
a.btn-primary::after,
a.btn-secondary::after,
a.btn-link::after,
a.nav-link::after,
a.dropdown-item::after,
a.footer-middle-social::after,
a.carousel-control-prev::after,
a.carousel-control-next::after,
.footer-middle-socials a::after,
.social-links a::after,
.navbar a::after,
.nav a::after,
header .menu a::after,
#header .menu a::after,
.primary-menu a::after,
.breadcrumb a::after,
.pager a::after,
.card-thumbnail a::after {
  display: none !important;
}

/* Hide decorative images from screen readers */
img[alt=""],
img[role="presentation"],
.decorative img {
  alt: "";
}

/* Ensure interactive elements have adequate size */
button,
input[type="button"],
input[type="submit"],
input[type="reset"],
a,
[role="button"] {
  min-height: 44px;
  min-width: 44px;
}

/* Button focus improvements */
.btn:focus,
.button:focus,
input[type="submit"]:focus,
input[type="button"]:focus,
button:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
  box-shadow: none;
}

/* Form field focus improvements */
.form-control:focus,
.form-select:focus,
.form-check-input:focus {
  border-color: var(--qrida-primary, #003c71);
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
  box-shadow: none;
}

/* Error states */
.has-error .form-control,
.is-invalid .form-control {
  border-color: var(--qrida-danger, #dc3545);
  background-image: none;
}

.error-message {
  color: var(--qrida-danger, #dc3545);
  font-size: 0.875em;
  margin-top: 0.25rem;
  display: block;
}

/* Required field indicators */
.required:after,
.form-required:after {
  content: " *";
  color: var(--qrida-danger, #dc3545);
  font-weight: bold;
}

/* Improved table accessibility */
table {
  border-collapse: collapse;
}

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

/* Responsive table wrapper */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Card focus improvements */
.card:focus-within {
  outline: 2px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
}

/* Navigation improvements */
.navbar-nav .nav-link:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
}

/* Breadcrumb improvements */
.breadcrumb-item:not(.active) a:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
}

/* Modal focus trap */
.modal:focus {
  outline: none;
}

.modal-content:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: -3px;
}

/* Accordion improvements */
.accordion-button:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
  box-shadow: none;
}

/* Tab improvements */
.nav-tabs .nav-link:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
}

/* Pagination improvements */
.page-link:focus {
  outline: 3px solid var(--qrida-focus-color, var(--qg-blue-500, #005EB8));
  outline-offset: 2px;
  box-shadow: none;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --qrida-focus-color: #000000;
  }

  .bg-dark {
    --qrida-focus-color: #ffffff;
  }
}

/* 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;
  }

  .skip-link {
    transition: none;
  }
}

/* Print accessibility */
@media print {
  .skip-link,
  .sr-only:not(.sr-only-focusable) {
    display: none !important;
  }

  a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #000;
  }
}