/* Screen Reader HTML Support Page Styles - Modern Design */

/* CSS Custom Properties for consistent theming */
:root {
    --sr-primary-color: #2563eb;
    --sr-primary-light: #3b82f6;
    --sr-primary-dark: #1d4ed8;
    --sr-secondary-color: #64748b;
    --sr-accent-color: #06b6d4;
    --sr-success-color: #10b981;
    --sr-warning-color: #f59e0b;
    --sr-error-color: #ef4444;
    
    --sr-bg-primary: #ffffff;
    --sr-bg-secondary: #f8fafc;
    --sr-bg-tertiary: #f1f5f9;
    --sr-border-color: #e2e8f0;
    --sr-border-light: #f1f5f9;
    
    --sr-text-primary: #0f172a;
    --sr-text-secondary: #475569;
    --sr-text-muted: #64748b;
    
    --sr-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --sr-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sr-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --sr-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --sr-radius-sm: 0.375rem;
    --sr-radius-md: 0.5rem;
    --sr-radius-lg: 0.75rem;
    --sr-radius-xl: 1rem;
    
    --sr-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --sr-font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

/* Main container styling with modern design */
.screen-reader-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    background: linear-gradient(135deg, var(--sr-bg-secondary) 0%, var(--sr-bg-primary) 100%);
    min-height: 100vh;
    font-family: var(--sr-font-family);
}

/* Modern header styling with gradient and improved typography */
.screen-reader-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
    background: linear-gradient(135deg, var(--sr-primary-color) 0%, var(--sr-primary-light) 100%);
    border-radius: var(--sr-radius-xl);
    box-shadow: var(--sr-shadow-lg);
    position: relative;
    overflow: hidden;
}

.screen-reader-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
    pointer-events: none;
}

.screen-reader-header h1 {
    margin: 0;
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* Enhanced animation and transition styles */
.screen-reader-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    transform: translateY(0);
    position: relative;
    background: var(--sr-bg-primary);
    border-radius: var(--sr-radius-lg);
    box-shadow: var(--sr-shadow-md);
    border: 1px solid var(--sr-border-light);
    overflow: hidden;
}

.screen-reader-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--sr-primary-color) 0%, var(--sr-accent-color) 100%);
    transition: height 0.3s ease;
}

.screen-reader-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sr-shadow-xl);
    border-color: var(--sr-primary-light);
}

.screen-reader-card:hover::before {
    height: 6px;
}

/* Initial state for cards when they first appear */
.screen-reader-card.hidden {
    opacity: 0;
    transform: translateY(20px);
}

/* Modern Screen Reader Support Table Styles */
.screen-reader-support-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--sr-bg-primary);
    border-radius: var(--sr-radius-lg);
    overflow: hidden;
    box-shadow: var(--sr-shadow-lg);
    border: 1px solid var(--sr-border-color);
    font-family: var(--sr-font-family);
}

.screen-reader-support-table th,
.screen-reader-support-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--sr-border-light);
    vertical-align: top;
}

.screen-reader-support-table th {
    background: linear-gradient(135deg, var(--sr-bg-tertiary) 0%, var(--sr-bg-secondary) 100%);
    font-weight: 600;
    color: var(--sr-text-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 2px solid var(--sr-border-color);
}

.screen-reader-support-table tbody tr {
    transition: all 0.2s ease;
}

.screen-reader-support-table tbody tr:hover {
    background: linear-gradient(135deg, var(--sr-bg-secondary) 0%, var(--sr-bg-tertiary) 100%);
    transform: scale(1.01);
    box-shadow: inset 0 0 0 1px var(--sr-primary-light);
}

.screen-reader-support-table tbody tr:nth-child(even) {
    background: var(--sr-bg-secondary);
}

.screen-reader-support-table tbody tr:nth-child(even):hover {
    background: linear-gradient(135deg, var(--sr-bg-tertiary) 0%, var(--sr-bg-secondary) 100%);
}

/* Code elements in tables */
.screen-reader-support-table code {
    background: var(--sr-bg-tertiary);
    color: var(--sr-primary-dark);
    padding: 0.25rem 0.5rem;
    border-radius: var(--sr-radius-sm);
    font-family: var(--sr-font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--sr-border-color);
}

/* Modern Screen Reader Section Styles */
.screen-reader-section {
    margin: 2.5rem 0;
    padding: 2rem;
    background: var(--sr-bg-primary);
    border-radius: var(--sr-radius-xl);
    box-shadow: var(--sr-shadow-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--sr-border-light);
    position: relative;
    overflow: hidden;
}

.screen-reader-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--sr-primary-color) 0%, var(--sr-accent-color) 50%, var(--sr-success-color) 100%);
}

.screen-reader-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--sr-shadow-xl);
    border-color: var(--sr-primary-light);
}

/* Modern section headers with improved typography */
.screen-reader-section h3 {
    margin: 0 0 1.5rem 0;
    color: var(--sr-text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    position: relative;
    padding-bottom: 0.75rem;
}

.screen-reader-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 3rem;
    height: 3px;
    background: linear-gradient(90deg, var(--sr-primary-color) 0%, var(--sr-accent-color) 100%);
    border-radius: var(--sr-radius-sm);
}

/* Enhanced element selector styling */
.element-selector-section {
    background: var(--sr-bg-primary);
    border-radius: var(--sr-radius-xl);
    padding: 2.5rem;
    margin: 2rem 0;
    box-shadow: var(--sr-shadow-lg);
    border: 1px solid var(--sr-border-light);
    position: relative;
    overflow: hidden;
}

.element-selector-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--sr-accent-color) 0%, var(--sr-success-color) 100%);
}

.selector-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.selector-group label {
    font-weight: 600;
    color: var(--sr-text-primary);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

#html-element-select {
    padding: 1rem 1.25rem;
    border: 2px solid var(--sr-border-color);
    border-radius: var(--sr-radius-lg);
    font-size: 1rem;
    font-family: var(--sr-font-family);
    background: var(--sr-bg-primary);
    color: var(--sr-text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 350px;
    box-shadow: var(--sr-shadow-sm);
    cursor: pointer;
}

#html-element-select:focus {
    outline: none;
    border-color: var(--sr-primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), var(--sr-shadow-md);
    transform: translateY(-1px);
}

#html-element-select:hover {
    border-color: var(--sr-primary-light);
    box-shadow: var(--sr-shadow-md);
}

/* Modern content section styling */
.content-section {
    background: var(--sr-bg-primary);
    border-radius: var(--sr-radius-xl);
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: var(--sr-shadow-lg);
    border: 1px solid var(--sr-border-light);
}

.content-section h1 {
    color: var(--sr-text-primary);
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    margin: 0 0 1.5rem 0;
    background: linear-gradient(135deg, var(--sr-primary-color) 0%, var(--sr-accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.content-section h2 {
    color: var(--sr-text-primary);
    font-size: 1.875rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem 0;
    letter-spacing: -0.025em;
}

.content-section p {
    color: var(--sr-text-secondary);
    font-size: 1.125rem;
    line-height: 1.7;
    margin: 1rem 0;
}

.content-section ul {
    margin: 1.5rem 0;
    padding-left: 0;
    list-style: none;
}

.content-section li {
    color: var(--sr-text-secondary);
    font-size: 1.125rem;
    line-height: 1.7;
    margin: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
}

.content-section li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--sr-primary-color);
    font-weight: 600;
    font-size: 1.25rem;
}

.content-section strong {
    color: var(--sr-text-primary);
    font-weight: 600;
}

/* Modern link styling */
.content-section a {
    color: var(--sr-primary-color);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.content-section a:hover {
    color: var(--sr-primary-dark);
    border-bottom-color: var(--sr-primary-color);
}

.content-section a:focus {
    outline: 2px solid var(--sr-primary-color);
    outline-offset: 2px;
    border-radius: var(--sr-radius-sm);
}

/* Highlighted Section Styles */
.highlighted-section {
    background-color: #fff3cd !important;
    border: 2px solid #ffc107 !important;
    transform: scale(1.02);
    box-shadow: 0 4px 20px rgba(255, 193, 7, 0.3) !important;
    animation: section-highlight-fade 3s ease-out;
}

@keyframes section-highlight-fade {
    0% {
        background-color: #ffc107;
        transform: scale(1.05);
    }
    50% {
        background-color: #fff3cd;
        transform: scale(1.02);
    }
    100% {
        background-color: #fff3cd;
        transform: scale(1.02);
    }
}

/* Support status icons */
.screen-reader-support-table svg.yes {
    fill: #28a745;
}

.screen-reader-support-table svg.no {
    fill: #dc3545;
}

.screen-reader-support-table svg.noneE {
    fill: #28a745;
}

.screen-reader-support-table svg.unknown {
    fill: #ffc107;
}

/* Code elements in tables */
.screen-reader-support-table code {
    background-color: #f8f9fa;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
}

/* Lists in table cells */
.screen-reader-support-table ul {
    margin: 0.5rem 0;
    padding-left: 1.2rem;
}

.screen-reader-support-table li {
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

/* Keyboard shortcuts styling */
.screen-reader-support-table kbd {
    background-color: #212529;
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.8em;
    font-family: monospace;
}

/* Screen reader section styling */
.screen-reader-section {
    margin-bottom: 2rem;
    padding: 1rem;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    background-color: #ffffff;
}

.screen-reader-section h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: #2C3E50;
    font-size: 1.3rem;
    border-bottom: 2px solid #0078d4;
    padding-bottom: 0.5rem;
}

/* Error and no-data messages */
.error-message,
.no-data-message {
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    font-style: italic;
}

.error-message {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.no-data-message {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Element category styling */
.element-category {
    background-color: #e7f3ff;
    border: 1px solid #b3d9ff;
    border-radius: 6px;
    padding: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: #0056b3;
}

.element-category strong {
    color: #003d82;
}

.screen-reader-card:hover::before {
    height: 6px;
}

.screen-reader-card h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
}

.screen-reader-card h3 svg {
    color: var(--primary-color, #0078d4);
    flex-shrink: 0;
}

/* Filter section */
.screen-reader-filters {
    background-color: #f5f5f5;
    padding: 1.25rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.screen-reader-filters:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.filter-toggle-btn,
#toggle-filters-btn {
    background-color: var(--primary-color, #0078d4);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
}

.filter-toggle-btn:hover,
.filter-toggle-btn:focus,
#toggle-filters-btn:hover,
#toggle-filters-btn:focus {
    background-color: var(--primary-color-dark, #0069b9);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.toggle-icon {
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

#toggle-filters-btn[aria-expanded="false"] .toggle-icon {
    transform: rotate(-90deg);
}

.filter-toggle-btn svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.filter-toggle-btn.expanded svg {
    transform: rotate(180deg);
}

.filter-options {
    background-color: #f8f9fa;
    padding: 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    align-items: flex-end;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.filter-options.collapsed {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: 0;
    overflow: hidden;
    opacity: 0;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.filter-group select,
.filter-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background-color: white;
}

.filter-group select:hover,
.filter-group input:hover {
    border-color: #0078d4;
}

.filter-group select:focus,
.filter-group input:focus {
    border-color: #0078d4;
    box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.2);
    outline: none;
}

.filter-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.25rem;
    flex-wrap: wrap;
}

.filter-actions button {
    padding: 0.75rem 1.25rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.filter-actions button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.filter-actions button:focus {
    outline: 2px solid #0078d4;
    outline-offset: 2px;
}

#apply-filters {
    background-color: var(--primary-color, #0078d4);
    color: white;
}

#apply-filters:hover {
    background-color: var(--primary-color-dark, #0069b9);
}

#reset-filters {
    background-color: #f0f0f0;
    color: #333;
    border: 1px solid #ddd;
}

#reset-filters:hover {
    background-color: #e0e0e0;
}

/* Screen reader cards */
.screen-reader-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.screen-reader-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.screen-reader-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #0078d4, #00b7c3);
    opacity: 0.8;
}

.screen-reader-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card-header {
    padding: 15px;
    background-color: #2C3E50;
    color: white;
}

.card-header h3 {
    margin: 0;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-header h3 svg {
    width: 24px;
    height: 24px;
    color: #ffffff;
}

.card-body {
    padding: 15px;
}

.card-body p {
    margin-bottom: 15px;
    color: #555;
    line-height: 1.6;
}

.card-footer {
    padding: 15px;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    text-align: right;
}

.view-details-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color, #0078d4);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.view-details-btn svg {
    transition: transform 0.3s ease;
}

.view-details-btn:hover,
.view-details-btn:focus {
    background-color: var(--primary-color-dark, #0069b9);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.view-details-btn:hover svg,
.view-details-btn:focus svg {
    transform: translateX(3px);
}

/* Embedded content styling */
#embedded-content {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 1200px;
    max-height: 85vh;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
    z-index: 1000;
    overflow-y: auto;
    padding: 2.5rem;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    visibility: hidden; /* Add visibility property for better display control */
}

#embedded-content.visible {
    display: block;
    visibility: visible;
    opacity: 1;
    animation: modalFadeIn 0.4s ease forwards;
}

/* Loading container styling */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 120, 212, 0.2);
    border-radius: 50%;
    border-top-color: #0078d4;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    margin-top: 1rem;
    font-size: 1.1rem;
    color: #555;
}

/* Error message styling */
.error-message {
    text-align: center;
    padding: 2rem;
    background-color: #fff5f5;
    border-radius: 8px;
    border: 1px solid #ffcccc;
}

.error-message p {
    color: #d32f2f;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.retry-btn {
    background-color: #d32f2f;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.retry-btn:hover {
    background-color: #b71c1c;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translate(-50%, -55%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

.embedded-content h2 {
    margin-top: 0;
    color: #2C3E50;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.close-embedded-btn {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background-color: rgba(0, 0, 0, 0.05);
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: #555;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: all 0.2s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

.close-embedded-btn:hover,
.close-embedded-btn:focus {
    background-color: rgba(0, 0, 0, 0.1);
    color: #333;
    transform: scale(1.1);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
}

.loading-spinner {
    display: inline-block;
    width: 60px;
    height: 60px;
    border: 6px solid rgba(0, 120, 212, 0.1);
    border-radius: 50%;
    border-top-color: #0078d4;
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-message {
    color: #d32f2f;
    background-color: #ffebee;
    padding: 1.25rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(211, 47, 47, 0.2);
}

.no-results-message {
    text-align: center;
    padding: 2.5rem;
    background-color: #f9f9f9;
    border-radius: 10px;
    color: #555;
    font-style: italic;
    margin: 2rem 0;
    border: 1px dashed #ddd;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Style tables within embedded content */
#embedded-content .sr-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

#embedded-content .sr-table th,
#embedded-content .sr-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

#embedded-content .sr-table th {
    background-color: #f5f7fa;
    font-weight: 600;
    color: #333;
}

#embedded-content .sr-table tr:last-child td {
    border-bottom: none;
}

#embedded-content .sr-table tr:hover {
    background-color: #f9f9f9;
}

/* Table styling for embedded content */
.sr-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.sr-table th,
.sr-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.sr-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #333;
}

.sr-table tr:hover {
    background-color: #f5f5f5;
}

/* Support indicators */
.support-yes {
    color: green;
    font-weight: bold;
}

.support-no {
    color: red;
    font-weight: bold;
}

.support-partial {
    color: orange;
    font-weight: bold;
}

/* Modern message states with enhanced styling */
.loading-message,
.error-message,
.no-data-message {
    text-align: center;
    padding: 3rem 2rem;
    border-radius: var(--sr-radius-lg);
    font-size: 1.125rem;
    font-weight: 500;
    margin: 2rem 0;
    position: relative;
    overflow: hidden;
}

.loading-message {
    color: var(--sr-primary-color);
    background: linear-gradient(135deg, var(--sr-bg-secondary) 0%, var(--sr-bg-primary) 100%);
    border: 2px solid var(--sr-primary-light);
    box-shadow: var(--sr-shadow-md);
}

.loading-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.error-message {
    color: var(--sr-error-color);
    background: linear-gradient(135deg, #fef2f2 0%, #ffffff 100%);
    border: 2px solid #fecaca;
    box-shadow: var(--sr-shadow-md);
}

.no-data-message {
    color: var(--sr-text-muted);
    background: linear-gradient(135deg, var(--sr-bg-tertiary) 0%, var(--sr-bg-secondary) 100%);
    border: 2px solid var(--sr-border-color);
    box-shadow: var(--sr-shadow-sm);
}

/* Enhanced responsive design */
@media (max-width: 1024px) {
    .screen-reader-container {
        padding: 1.5rem;
    }
    
    .content-section {
        padding: 2rem;
    }
    
    .content-section h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .screen-reader-container {
        padding: 1rem;
    }
    
    .screen-reader-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-row {
        flex-direction: column;
        gap: 10px;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .screen-reader-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .element-selector-section,
    .screen-reader-section,
    .content-section {
        padding: 1.5rem;
        margin: 1rem 0;
    }
    
    .content-section h1 {
        font-size: 2rem;
    }
    
    .content-section h2 {
        font-size: 1.5rem;
    }
    
    #html-element-select {
        min-width: 100%;
        padding: 0.875rem 1rem;
    }
    
    .screen-reader-support-table {
        font-size: 0.875rem;
    }
    
    .screen-reader-support-table th,
    .screen-reader-support-table td {
        padding: 0.75rem 0.5rem;
    }
    
    .loading-message,
    .error-message,
    .no-data-message {
        padding: 2rem 1rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .content-section h1 {
        font-size: 1.75rem;
    }
    
    .content-section h2 {
        font-size: 1.25rem;
    }
    
    .content-section p,
    .content-section li {
        font-size: 1rem;
    }
    
    .screen-reader-support-table th,
    .screen-reader-support-table td {
        padding: 0.5rem 0.25rem;
        font-size: 0.8rem;
    }
}

/* Print styles */
@media print {
    .screen-reader-container {
        background: white;
        box-shadow: none;
        padding: 0;
    }
    
    .screen-reader-header {
        background: none;
        color: black;
        box-shadow: none;
        border-bottom: 2px solid black;
    }
    
    .screen-reader-section,
    .content-section,
    .element-selector-section {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
    
    .screen-reader-support-table {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .screen-reader-container {
        background-color: #1e1e1e;
        color: #e0e0e0;
    }
    
    .screen-reader-header h1 {
        color: #e0e0e0;
    }
    
    .screen-reader-filters {
        background-color: #2d2d2d;
    }
    
    .filter-group label {
        color: #c0c0c0;
    }
    
    .filter-group select,
    .filter-group input[type="text"] {
        background-color: #333;
        border-color: #444;
        color: #e0e0e0;
    }
    
    .reset-filter {
        background-color: #444;
        color: #e0e0e0;
    }
    
    .screen-reader-card {
        background-color: #2d2d2d;
    }
    
    .card-body p {
        color: #c0c0c0;
    }
    
    .card-footer {
        background-color: #333;
        border-top-color: #444;
    }
    
    .embedded-content {
        border-color: #444;
    }
    
    .embedded-content h2 {
        color: #e0e0e0;
        border-bottom-color: #444;
    }
    
    .sr-table th {
        background-color: #333;
        color: #e0e0e0;
    }
    
    .sr-table td {
        border-bottom-color: #444;
    }
    
    .sr-table tr:hover {
        background-color: #383838;
    }
}