/* EvAAL - Accessibility Styles */
/* Enhanced accessibility features and WCAG compliance */

/* 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;
    }
    
    .target-circle {
        animation: none;
    }
    
    .target-circle:hover {
        transform: none;
    }
    
    .nav-btn:hover,
    .nav-btn:focus {
        transform: none;
    }
    
    .primary-btn:hover,
    .primary-btn:focus {
        transform: none;
    }
    
    .secondary-btn:hover,
    .secondary-btn:focus {
        transform: none;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --primary-dark: #000000;
        --secondary-color: #ffffff;
        --bg-primary: #ffffff;
        --bg-secondary: #f0f0f0;
        --text-primary: #000000;
        --text-secondary: #000000;
        --text-muted: #000000;
    }
    
    .target-circle {
        border-width: 4px;
        border-color: #000000;
    }
    
    .test-area {
        border-width: 4px;
    }
    
    .nav-btn,
    .primary-btn,
    .secondary-btn {
        border-width: 3px;
    }
}

/* Large Text Support */
@media (prefers-reduced-motion: no-preference) {
    .large-text {
        font-size: 1.2em;
        line-height: 1.6;
    }
    
    .large-text h1 { font-size: 2.5em; }
    .large-text h2 { font-size: 2em; }
    .large-text h3 { font-size: 1.5em; }
    .large-text p { font-size: 1.2em; }
    .large-text button { font-size: 1.2em; padding: 1.2em 1.5em; }
}

/* Focus Indicators */
.focus-visible {
    outline: 3px solid var(--secondary-color) !important;
    outline-offset: 3px !important;
}

/* Keyboard Navigation Support */
.nav-btn:focus-visible,
.primary-btn:focus-visible,
.secondary-btn:focus-visible,
.target-circle:focus-visible {
    outline: 4px solid var(--secondary-color) !important;
    outline-offset: 4px !important;
    box-shadow: 0 0 0 4px var(--bg-primary), 0 0 0 8px var(--secondary-color) !important;
}

/* Screen Reader Enhancements */
.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0.5em;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: var(--primary-color);
    color: var(--text-inverse);
    border-radius: var(--border-radius);
    z-index: 1000;
}

/* ARIA Live Regions */
.aria-live {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.aria-live[aria-live="polite"] {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
    border-left: 4px solid var(--primary-color);
}

/* Status Announcements */
.status-announcement {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--primary-color);
    color: var(--text-inverse);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    z-index: 1000;
    max-width: 300px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Error and Success States */
.error-message {
    background-color: var(--error-color);
    color: var(--text-inverse);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
    border-left: 4px solid var(--text-inverse);
}

.success-message {
    background-color: var(--success-color);
    color: var(--text-inverse);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
    border-left: 4px solid var(--text-inverse);
}

.warning-message {
    background-color: var(--warning-color);
    color: var(--text-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
    border-left: 4px solid var(--text-primary);
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Disabled States */
button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Touch Target Sizes */
.touch-target {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Enhanced Button States */
.btn-with-icon {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-with-icon .icon {
    font-size: 1.2em;
}

/* Form Accessibility */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
}

.form-input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-input.error {
    border-color: var(--error-color);
}

.form-input.success {
    border-color: var(--success-color);
}

/* Fieldset and Legend */
fieldset {
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

legend {
    padding: 0 var(--spacing-sm);
    font-weight: 600;
    color: var(--primary-color);
}

/* Checkbox and Radio Accessibility */
.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checkbox-item,
.radio-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.checkbox-item:hover,
.radio-item:hover {
    background-color: var(--bg-secondary);
}

.checkbox-item input[type="checkbox"],
.radio-item input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

/* Progress Indicators */
.progress-bar {
    width: 100%;
    height: 20px;
    background-color: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
    margin: var(--spacing-md) 0;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-color);
    transition: width var(--transition-normal);
    border-radius: 10px;
}

/* Skip Links */
.skip-links {
    position: absolute;
    top: -40px;
    left: 6px;
    z-index: 1000;
}

.skip-link {
    display: inline-block;
    background: var(--primary-color);
    color: var(--text-inverse);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    border-radius: var(--border-radius);
    margin-right: var(--spacing-sm);
    transition: var(--transition-fast);
}

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

/* Print Styles */
@media print {
    .main-nav,
    .test-controls,
    .accessibility-controls {
        display: none !important;
    }
    
    .test-area {
        border: 1px solid #000;
        page-break-inside: avoid;
    }
    
    /* Only show the active screen when printing */
    .screen {
        display: none !important;
    }
    
    .screen.active {
        display: block !important;
        page-break-before: avoid;
    }
    
    /* Ensure proper page breaks */
    .report-section,
    .subtest-result {
        page-break-inside: avoid;
        break-inside: avoid;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-tertiary: #404040;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
        --text-muted: #999999;
    }
}

/* Landscape Orientation for Mobile */
@media (orientation: landscape) and (max-height: 500px) {
    .main-header {
        padding: var(--spacing-sm);
    }
    
    .main-header h1 {
        font-size: var(--font-size-xlarge);
    }
    
    .main-nav {
        padding: var(--spacing-sm);
    }
    
    .test-area {
        min-height: 200px;
    }
}