/**
 * Production-Ready Styles
 * Optimized for large datasets and responsive design
 */

/* Virtual Table Styles */
.virtual-table {
    width: 100%;
    height: 600px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

.virtual-table-header {
    flex-shrink: 0;
    border-bottom: 2px solid var(--border);
    background: var(--background);
}

.virtual-table-th {
    transition: background-color 0.2s;
    color: var(--text);
    font-weight: 600;
}

.virtual-table-th:hover {
    background: rgba(99, 102, 241, 0.15);
}

.virtual-table-th.sortable {
    cursor: pointer;
    user-select: none;
}

.sort-icon {
    font-size: 0.75rem;
    transition: opacity 0.2s;
}

.virtual-table-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: auto;
}

/* Table row and cell styles */
.virtual-table-row {
    transition: background-color 0.15s;
    min-height: 40px;
}

.virtual-table-row:hover {
    background: rgba(99, 102, 241, 0.08);
}

.virtual-table-row > div,
.virtual-table-cell {
    color: var(--text);
    font-weight: 500;
}

.virtual-table-cell {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    min-height: inherit;
}

/* Custom scrollbar */
.virtual-table-scroll::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

.virtual-table-scroll::-webkit-scrollbar-track {
    background: var(--background);
}

.virtual-table-scroll::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 6px;
    border: 2px solid var(--background);
}

.virtual-table-scroll::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.virtual-table-row {
    transition: background-color 0.1s;
}

.virtual-table-cell {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Collapsible Section Styles */
.collapsible-section {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

.collapsible-header {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.collapsible-header:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
}

.collapsible-header:hover {
    background: #f3f4f6;
}

.collapsible-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.collapse-icon {
    font-size: 0.75rem;
    transition: transform 0.2s;
    color: var(--text-secondary);
}

.collapsible-title h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.collapsible-content {
    padding: var(--spacing-lg);
}

/* Tooltip Styles */
.tooltip-popup {
    position: fixed;
    background: #1f2937;
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    max-width: 300px;
    z-index: 10000;
    box-shadow: var(--shadow-lg);
    pointer-events: none;
}

.tooltip-popup::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 16px;
    width: 8px;
    height: 8px;
    background: #1f2937;
    transform: rotate(45deg);
}

[data-tooltip] {
    cursor: help;
    position: relative;
}

.help-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--text-muted);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    margin-left: var(--spacing-xs);
}

/* Filter Panel Styles */
.filter-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.active-filters {
    margin-bottom: var(--spacing-md);
    min-height: 32px;
}

.no-filters {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.chip-remove {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    margin: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.chip-remove:hover {
    background: rgba(255, 255, 255, 0.2);
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.filter-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.filter-group input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.filter-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Loading Indicator Styles */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    gap: var(--spacing-md);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-message {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Pagination Styles */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--background);
    border-top: 1px solid var(--border);
}

.page-size-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.page-size-selector label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.page-size-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
}

.page-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.page-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
    min-width: 120px;
    text-align: center;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

.btn-icon:hover:not(:disabled) {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-icon:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Performance Metrics Badge */
.perf-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: #f3f4f6;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.perf-badge.slow {
    background: #fee2e2;
    color: #991b1b;
}

.perf-badge.fast {
    background: #dcfce7;
    color: #166534;
}

/* Sticky Navigation */
.sticky-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-lg);
}

.sticky-nav-links {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    padding: 0 var(--spacing-lg);
}

.sticky-nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.sticky-nav-link:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
}

.sticky-nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

/* Export Controls */
.export-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-export {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 0.875rem;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

.btn-export:hover {
    background: var(--background);
    border-color: var(--primary);
    color: var(--primary);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .filters-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .virtual-table {
        height: 500px;
    }
    
    .metrics-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .filters-grid {
        grid-template-columns: 1fr;
    }
    
    .pagination-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .virtual-table {
        height: 400px;
    }
    
    .virtual-table-header {
        font-size: 0.75rem;
    }
    
    .virtual-table-th {
        padding: var(--spacing-sm);
    }
    
    .collapsible-title h3 {
        font-size: 1rem;
    }
    
    .header-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .header-controls button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
    }
    
    .app-header {
        padding: var(--spacing-md);
    }
    
    .data-status {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .virtual-table {
        height: 300px;
    }
    
    .tooltip-popup {
        max-width: 250px;
    }
}

/* Print Styles */
@media print {
    .app-header,
    .filter-panel,
    .pagination-container,
    .export-controls,
    .btn {
        display: none !important;
    }
    
    .collapsible-content {
        display: block !important;
    }
    
    .virtual-table {
        height: auto !important;
        overflow: visible !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border: #000000;
        --text-secondary: #000000;
    }
    
    .btn {
        border-width: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support (future) */
@media (prefers-color-scheme: dark) {
    :root {
        --background: #111827;
        --card: #1f2937;
        --border: #374151;
        --text: #f9fafb;
        --text-secondary: #d1d5db;
        --text-muted: #9ca3af;
    }
}

/* Badge Styles */
.badge-success {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(34, 197, 94, 0.1);
    color: rgb(34, 197, 94);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-error {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(220, 38, 38, 0.1);
    color: rgb(220, 38, 38);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-warning {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(234, 179, 8, 0.1);
    color: rgb(234, 179, 8);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-info {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(96, 165, 250, 0.2);
    color: #93c5fd;
    border: 1px solid rgba(96, 165, 250, 0.4);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-secondary {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(167, 139, 250, 0.2);
    color: #c4b5fd;
    border: 1px solid rgba(167, 139, 250, 0.4);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Tier Selector */
.tier-selector {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.tier-button {
    padding: 0.75rem 1.5rem;
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.tier-button:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
    color: #a5b4fc;
}

.tier-button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: fadeIn 0.2s;
}

.modal-content {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s;
}

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

.modal-header h3 {
    margin: 0;
    color: var(--text);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

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

.modal-body {
    padding: 1.5rem;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

/* Button Styles */
.btn-detail {
    padding: 0.5rem 1rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-detail:hover {
    background: rgba(99, 102, 241, 0.8);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Version Column Styles */
.version-column {
    background: var(--card);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.version-column h4 {
    margin: 0 0 1rem 0;
    color: var(--text);
}

.compliance-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 1024px) {
    .compliance-comparison {
        grid-template-columns: 1fr;
    }
}