/* WCAG 2.1 AA Accessibility Compliance */

/* Focus Indicators */
*:focus {
  outline: 2px solid var(--md-sys-color-primary, #1976d2);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--md-sys-color-primary, #1976d2);
  outline-offset: 2px;
}

/* High Contrast Focus for Keyboard Navigation */
@media (prefers-contrast: high) {
  *:focus-visible {
    outline: 3px solid currentColor;
    outline-offset: 3px;
  }
}

/* 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;
}

/* Ensure sufficient color contrast */
:root {
  --color-text-primary: #1c1b1f;
  --color-text-secondary: #49454f;
  --color-text-disabled: rgba(0, 0, 0, 0.38);
}

body {
  color: var(--color-text-primary);
}

/* Link Accessibility */
a {
  color: var(--md-sys-color-primary, #1976d2);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:visited {
  color: #6a1b9a;
}

/* Ensure interactive elements meet minimum size requirements */
button,
a,
input[type="button"],
input[type="submit"],
input[type="checkbox"],
input[type="radio"] {
  min-height: 44px;
  min-width: 44px;
}

/* Form Labels */
label {
  display: block;
  margin-bottom: 4px;
  font-weight: 500;
}

/* Required Field Indicator */
.required::after {
  content: " *";
  color: var(--md-sys-color-error, #ba1a1a);
}

/* Error Messages */
.error-message {
  color: var(--md-sys-color-error, #ba1a1a);
  font-size: 12px;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.error-message::before {
  content: "⚠️";
  font-size: 14px;
}

/* ARIA Live Regions */
[aria-live="polite"],
[aria-live="assertive"] {
  position: relative;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  button {
    border: 2px solid currentColor;
  }
  
  .md3-card {
    border: 1px solid rgba(0, 0, 0, 0.2);
  }
}