/* Accessibility and Internationalization Styles */

/* Screen reader only content */
.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;
}

.sr-only-focusable:focus {
    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-links {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10000;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 4px 4px;
    font-weight: 500;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
}

/* Focus indicators */
.focus-visible {
    outline: 2px solid var(--focus-color, #0066cc) !important;
    outline-offset: 2px !important;
}

.high-contrast .focus-visible {
    outline: 3px solid #ffffff !important;
    outline-offset: 3px !important;
}

/* Hide focus for mouse users */
.mouse-user *:focus {
    outline: none !important;
}

/* Show focus for keyboard users */
.keyboard-user *:focus-visible {
    outline: 2px solid var(--focus-color, #0066cc) !important;
    outline-offset: 2px !important;
}

/* High contrast mode */
.high-contrast {
    --bg-color: #000000;
    --text-color: #ffffff;
    --border-color: #ffffff;
    --focus-color: #ffff00;
    --button-bg: #000000;
    --button-border: #ffffff;
    --input-bg: #000000;
    --input-border: #ffffff;
}

.high-contrast * {
    background-color: var(--bg-color) !important;
    color: var(--text-color) !important;
    border-color: var(--border-color) !important;
}

.high-contrast button,
.high-contrast input,
.high-contrast select {
    background-color: var(--button-bg) !important;
    border: 2px solid var(--button-border) !important;
}

.high-contrast :focus {
    outline: 3px solid var(--focus-color) !important;
    outline-offset: 2px !important;
}

/* Font size scaling */
.font-size-small { font-size: calc(1rem * var(--font-scale, 0.875)); }
.font-size-normal { font-size: calc(1rem * var(--font-scale, 1.0)); }
.font-size-large { font-size: calc(1rem * var(--font-scale, 1.125)); }
.font-size-extra-large { font-size: calc(1rem * var(--font-scale, 1.25)); }
.font-size-huge { font-size: calc(1rem * var(--font-scale, 1.5)); }

/* Reduced motion */
.reduced-motion *,
.reduced-motion *::before,
.reduced-motion *::after {
    animation-duration: var(--animation-duration, 0.01ms) !important;
    animation-iteration-count: 1 !important;
    transition-duration: var(--transition-duration, 0.01ms) !important;
    scroll-behavior: auto !important;
}

.no-animations * {
    animation: none !important;
}

.no-transitions * {
    transition: none !important;
}

/* RTL language support */
.rtl {
    direction: rtl;
}

.rtl .sidebar {
    left: auto;
    right: 0;
}

.rtl .sidebar-toggle {
    left: auto;
    right: 20px;
}

.rtl .toolbar,
.rtl .button-group {
    flex-direction: row-reverse;
}

.rtl .icon-left {
    margin-left: 0.5rem;
    margin-right: 0;
}

.rtl .icon-right {
    margin-right: 0.5rem;
    margin-left: 0;
}

/* Cultural color adaptations */
:root {
    --cultural-primary: var(--color-primary);
    --cultural-secondary: var(--color-secondary);
}

.theme-cultural {
    --color-primary: var(--cultural-primary);
    --color-secondary: var(--cultural-secondary);
}

/* Accessibility panel */
.accessibility-panel {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 320px;
    max-width: calc(100vw - 40px);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--color-shadow);
    z-index: 1000;
    display: none;
}

.accessibility-panel.show {
    display: block;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.panel-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.panel-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
}

.panel-close:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.panel-close .icon {
    width: 16px;
    height: 16px;
}

.panel-content {
    padding: 1rem;
}

.control-group {
    margin-bottom: 1rem;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.select-field {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-background);
    color: var(--color-text);
    font-size: 0.875rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
    margin-bottom: 0;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 0.5rem;
}

.rtl .checkbox-label input[type="checkbox"] {
    margin-right: 0;
    margin-left: 0.5rem;
}

/* Shortcut help panel */
.shortcut-help-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
}

.shortcut-help-panel.show {
    display: flex;
}

.shortcut-help-panel .modal-content {
    background: var(--color-surface);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    max-width: 800px;
    max-height: 80vh;
    width: 90%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.shortcut-category {
    margin-bottom: 2rem;
}

.shortcut-category:last-child {
    margin-bottom: 0;
}

.shortcut-category h3 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
}

.shortcut-list {
    display: grid;
    gap: 0.75rem;
}

.shortcut-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 4px;
}

.shortcut-keys {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-family: monospace;
    font-size: 0.875rem;
}

.shortcut-keys kbd {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.shortcut-keys kbd.modifier {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.shortcut-description {
    flex: 1;
    margin-left: 1rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.rtl .shortcut-description {
    margin-left: 0;
    margin-right: 1rem;
}

/* Shortcut feedback */
.shortcut-feedback {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--color-surface);
    color: var(--color-text);
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 8px var(--color-shadow);
    font-size: 0.875rem;
    z-index: 10000;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.rtl .shortcut-feedback {
    right: auto;
    left: 20px;
}

/* Language selector */
.language-selector {
    position: relative;
    display: inline-block;
}

.language-selector select {
    appearance: none;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.5rem 2rem 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--color-text);
    cursor: pointer;
}

.rtl .language-selector select {
    padding: 0.5rem 0.75rem 0.5rem 2rem;
}

.language-selector::after {
    content: '▼';
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
}

.rtl .language-selector::after {
    right: auto;
    left: 0.5rem;
}

/* Responsive design for accessibility features */
@media (max-width: 768px) {
    .accessibility-panel {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        bottom: 0;
        width: auto;
        max-width: none;
        border-radius: 0;
    }
    
    .shortcut-help-panel .modal-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .shortcut-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .shortcut-description {
        margin-left: 0;
        margin-right: 0;
    }
}

/* Print styles for accessibility */
@media print {
    .skip-links,
    .accessibility-panel,
    .shortcut-help-panel,
    .shortcut-feedback {
        display: none !important;
    }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reduced-motion *,
    .reduced-motion *::before,
    .reduced-motion *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Prefers high contrast */
@media (prefers-contrast: high) {
    :root {
        --focus-color: #ffff00;
        --focus-width: 3px;
    }
    
    * {
        border-width: 2px !important;
    }
    
    button,
    input,
    select {
        border: 2px solid currentColor !important;
    }
    
    :focus {
        outline: var(--focus-width) solid var(--focus-color) !important;
        outline-offset: 2px !important;
    }
}