/* ==============================================
   BARRIEREFREIHEIT / ACCESSIBILITY FRAMEWORK
   Für WCAG 2.1 AA Compliance
   ============================================== */


/* Accessibility Widget Styling */

.accessibility-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 99999;
    font-family: var(--font-primary, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
}

.accessibility-toggle {
    width: 60px;
    height: 60px;
    background: #667eea;
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    pointer-events: auto;
    z-index: inherit;
}

.accessibility-toggle:hover {
    background: #5a67d8;
    transform: scale(1.05);
}

.accessibility-toggle:focus {
    outline: 3px solid #fbbf24;
    outline-offset: 2px;
}

.accessibility-panel {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 350px;
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    padding: 20px;
    transform: translateY(10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.accessibility-panel.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.accessibility-panel h3 {
    color: #1e293b;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.accessibility-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #f1f5f9;
}

.accessibility-option:last-child {
    border-bottom: none;
}

.accessibility-option label {
    font-weight: 500;
    color: #374151;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.accessibility-switch {
    position: relative;
    width: 50px;
    height: 26px;
    background: #cbd5e1;
    border-radius: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.accessibility-switch.active {
    background: #10b981;
}

.accessibility-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.accessibility-switch.active::after {
    transform: translateX(24px);
}

.accessibility-reset {
    width: 100%;
    padding: 10px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    color: #374151;
    font-weight: 500;
    cursor: pointer;
    margin-top: 15px;
    transition: all 0.3s ease;
}

.accessibility-reset:hover {
    background: #e2e8f0;
}


/* ==============================================
   ACCESSIBILITY MODES
   ============================================== */


/* High Contrast Mode */

body.accessibility-high-contrast {
    --bg-color: #000000 !important;
    --text-color: #ffffff !important;
    --accent-color: #ffff00 !important;
    --secondary-color: #00ffff !important;
    --border-color: #ffffff !important;
}

body.accessibility-high-contrast,
body.accessibility-high-contrast * {
    background: #000000 !important;
    color: #ffffff !important;
    border-color: #ffffff !important;
}

body.accessibility-high-contrast a {
    color: #ffff00 !important;
    text-decoration: underline !important;
}

body.accessibility-high-contrast button {
    background: #ffff00 !important;
    color: #000000 !important;
    border: 2px solid #ffffff !important;
}

body.accessibility-high-contrast .btn-primary {
    background: #ffff00 !important;
    color: #000000 !important;
}

body.accessibility-high-contrast .btn-secondary {
    background: #00ffff !important;
    color: #000000 !important;
}


/* Large Text Mode */

body.accessibility-large-text {
    font-size: 1.25em !important;
}

body.accessibility-large-text h1 {
    font-size: 3em !important;
}

body.accessibility-large-text h2 {
    font-size: 2.5em !important;
}

body.accessibility-large-text h3 {
    font-size: 2em !important;
}

body.accessibility-large-text h4 {
    font-size: 1.75em !important;
}

body.accessibility-large-text .btn {
    font-size: 1.2em !important;
    padding: 15px 25px !important;
}

body.accessibility-large-text .nav-link {
    font-size: 1.1em !important;
    padding: 20px 25px !important;
}


/* Reduced Motion Mode */

body.accessibility-reduced-motion *,
body.accessibility-reduced-motion *::before,
body.accessibility-reduced-motion *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
}


/* Enhanced Focus Mode */

body.accessibility-enhanced-focus *:focus {
    outline: 4px solid #fbbf24 !important;
    outline-offset: 2px !important;
    box-shadow: 0 0 0 6px rgba(251, 191, 36, 0.3) !important;
}

body.accessibility-enhanced-focus button:focus,
body.accessibility-enhanced-focus a:focus,
body.accessibility-enhanced-focus input:focus,
body.accessibility-enhanced-focus textarea:focus,
body.accessibility-enhanced-focus select:focus {
    background: #fef3c7 !important;
    border-color: #f59e0b !important;
}


/* Dyslexia Friendly Mode */

body.accessibility-dyslexia-friendly {
    font-family: 'Arial', sans-serif !important;
    line-height: 1.8 !important;
    letter-spacing: 0.12em !important;
    word-spacing: 0.16em !important;
}

body.accessibility-dyslexia-friendly h1,
body.accessibility-dyslexia-friendly h2,
body.accessibility-dyslexia-friendly h3,
body.accessibility-dyslexia-friendly h4,
body.accessibility-dyslexia-friendly h5,
body.accessibility-dyslexia-friendly h6 {
    font-weight: 600 !important;
    margin-bottom: 1em !important;
}

body.accessibility-dyslexia-friendly p {
    margin-bottom: 1.5em !important;
}


/* Color Blind Friendly Mode */

body.accessibility-color-blind {
    filter: none !important;
}

body.accessibility-color-blind .btn-primary {
    background: #0f172a !important;
    border: 2px solid #ffffff !important;
}

body.accessibility-color-blind .btn-secondary {
    background: #64748b !important;
    border: 2px solid #ffffff !important;
}

body.accessibility-color-blind .stat-icon {
    background: #000000 !important;
    color: #ffffff !important;
}


/* Screen Reader Mode */

body.accessibility-screen-reader .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;
}

body.accessibility-screen-reader .sr-show {
    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;
}


/* Skip Links */

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #000000;
    color: #ffffff;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
    font-weight: 600;
}

.skip-link:focus {
    top: 6px;
}


/* ARIA Live Regions */

.aria-live-polite {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}


/* Mobile Accessibility */

@media (max-width: 768px) {
    .accessibility-widget {
        bottom: 15px;
        right: 15px;
    }
    .accessibility-toggle {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    .accessibility-panel {
        width: 300px;
        right: -10px;
    }
    body.accessibility-large-text {
        font-size: 1.4em !important;
    }
}


/* Print Accessibility */

@media print {
    .accessibility-widget {
        display: none !important;
    }
    body.accessibility-high-contrast {
        background: white !important;
        color: black !important;
    }
    body.accessibility-high-contrast * {
        background: white !important;
        color: black !important;
    }
}