/**
 * TeamBox Barrierefreiheits-Regeln (A11y)
 * Richtlinien: WCAG 2.2 AA, EN 301 549 & BbgBITV (Brandenburgisches Behindertengleichstellungsgesetz)
 */

/* 1. Skip-Link für Tastaturnutzer (WCAG SC 2.4.1 Bypass Blocks) */
.skip-link {
    position: absolute;
    top: -999px;
    left: 1rem;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--space-2) var(--space-4);
    z-index: 9999;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    box-shadow: var(--shadow-md);
}

.skip-link:focus {
    top: 1rem;
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

/* 2. Screenreader-Only (Visuell verborgen, für assistive Technologien verfügbar) */
.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;
}

/* 3. Kompromissloser Tastatur-Fokus (WCAG SC 2.4.7 Focus Visible & SC 2.4.11 Focus Not Obscured) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--color-focus-ring) !important;
    outline-offset: 2px !important;
}

/* 4. Touch- und Klickziel-Mindestgröße (WCAG 2.2 SC 2.5.8 Target Size Minimum) */
button:not(.btn-sm):not(.btn-toggle-eye),
a.btn:not(.btn-sm),
.nav-link,
.sidebar-link {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
}

/* 5. Barrierefreie Bewegungseinschränkung (WCAG SC 2.3.3 Animation from Interactions) */
@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;
    }
}

/* 6. Unterstützung für Windows High-Contrast Mode (Forced Colors) */
@media (forced-colors: active) {
    a:focus-visible,
    button:focus-visible {
        outline: 3px solid Highlight !important;
        outline-offset: 2px !important;
    }
}