/* ==========================================================================
   Accessibility.css — WCAG 2.2 support styles
   Loaded globally via _head_css.cshtml / _head_css_dark.cshtml / _BlankLayout
   ========================================================================== */

/* --------------------------------------------------------------------------
   Skip link (WCAG 2.4.1 Bypass Blocks)
   Visually hidden until focused, then appears at top-left.
   -------------------------------------------------------------------------- */
.skip-link {
    position: absolute;
    top: -100px;
    left: 8px;
    z-index: 10000;
    padding: 10px 16px;
    background: #0d6efd;
    color: #ffffff;
    font-weight: 600;
    border-radius: 0 0 6px 6px;
    text-decoration: none;
    transition: top 0.15s ease-in-out;
}

.skip-link:focus,
.skip-link:focus-visible {
    top: 0;
    outline: 3px solid #ffffff;
    outline-offset: 2px;
    color: #ffffff;
}

/* Target of the skip link should not show an outline when focused
   programmatically (it is not interactive itself). */
[role="main"]:focus {
    outline: none;
}

/* --------------------------------------------------------------------------
   Focus visibility (WCAG 2.4.7 Focus Visible, 2.4.11 Focus Not Obscured,
   2.4.13 Focus Appearance)
   A strong, consistent focus indicator for keyboard users only
   (:focus-visible does not affect mouse users).
   -------------------------------------------------------------------------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible,
[role="button"]:focus-visible {
    outline: 3px solid #1f6feb !important;
    outline-offset: 2px;
    border-radius: 2px;
}

[data-bs-theme="dark"] a:focus-visible,
[data-bs-theme="dark"] button:focus-visible,
[data-bs-theme="dark"] input:focus-visible,
[data-bs-theme="dark"] select:focus-visible,
[data-bs-theme="dark"] textarea:focus-visible,
[data-bs-theme="dark"] [tabindex]:focus-visible {
    outline-color: #79b8ff !important;
}

/* --------------------------------------------------------------------------
   Target size (WCAG 2.5.8 Target Size (Minimum) — 24x24 CSS px)
   Applies a minimum hit area to bare icon-only controls that commonly
   render smaller than 24px. Standard Bootstrap .btn controls already meet
   the minimum and are not affected.
   -------------------------------------------------------------------------- */
button.btn-link,
a.icon-link,
.header-item {
    min-width: 24px;
    min-height: 24px;
}

/* --------------------------------------------------------------------------
   Reduced motion (WCAG 2.3.3 Animation from Interactions — AAA, but cheap
   to honor and prevents vestibular triggers)
   -------------------------------------------------------------------------- */
@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;
    }
}