/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    margin-bottom: 30px;
    color: white;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header-text {
    text-align: center;
    flex: 1;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Theme toggle */
.theme-toggle {
    display: flex;
    align-items: center;
}

.theme-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    font-size: 1.2rem;
}

.theme-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

.theme-btn:active {
    transform: scale(0.95);
}

/* Upload section */
.upload-section {
    margin-bottom: 30px;
}

/* Upload tabs */
.upload-tabs {
    display: flex;
    margin-bottom: 20px;
    background: white;
    border-radius: 15px;
    padding: 5px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.tab-btn {
    flex: 1;
    padding: 15px 20px;
    border: none;
    background: transparent;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    color: #666;
}

.tab-btn.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 3px 10px rgba(102, 126, 234, 0.3);
}

.tab-btn:hover:not(.active) {
    background: #f8f9ff;
    color: #667eea;
}

.upload-area {
    background: white;
    border: 3px dashed #667eea;
    border-radius: 15px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.upload-area:hover {
    border-color: #764ba2;
    background: #f8f9ff;
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.upload-area.dragover {
    border-color: #4CAF50;
    background: #f0f8f0;
}

.upload-area i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 20px;
    display: block;
}

.upload-area h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
}

.upload-area p {
    color: #666;
    font-size: 1rem;
}

/* Text input area */
.text-input-area {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.text-input-header {
    text-align: center;
    margin-bottom: 25px;
}

.text-input-header i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 15px;
    display: block;
}

.text-input-header h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
}

.text-input-header p {
    color: #666;
    font-size: 1rem;
}

#textInput {
    width: 100%;
    min-height: 300px;
    padding: 20px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.3s ease;
    background: #f8f9fa;
}

#textInput:focus {
    outline: none;
    border-color: #667eea;
    background: white;
}

.text-input-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

.text-input-actions .btn {
    min-width: 150px;
}

/* Controls */
.controls {
    background: white;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 150px;
}

.control-group label {
    font-weight: 600;
    color: #555;
    font-size: 0.9rem;
}

.control-group select,
.control-group input {
    padding: 10px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.control-group select:focus,
.control-group input:focus {
    outline: none;
    border-color: #667eea;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

/* Column Selector */
.column-control-group {
    min-width: 280px;
    position: relative;
}

.column-selector-container {
    position: relative;
}

.column-selector-toggle {
    width: 100%;
    padding: 10px 12px;
    background: white;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.column-selector-toggle:hover {
    border-color: #667eea;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
}

.column-selector-toggle .fas.fa-columns {
    color: #667eea;
    font-size: 0.9rem;
}

.column-badge {
    background: #667eea;
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: auto;
}

.selector-arrow {
    color: #999;
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.selector-arrow.rotated {
    transform: rotate(180deg);
}

.column-selector {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    max-height: 400px;
    display: flex;
    flex-direction: column;
}

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

.selector-header {
    padding: 12px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.selector-search {
    flex: 1;
    position: relative;
}

.selector-search .fas {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 0.8rem;
}

.selector-search input {
    width: 100%;
    padding: 8px 12px 8px 32px;
    border: 1px solid #e1e5e9;
    border-radius: 6px;
    font-size: 0.85rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.selector-search input:focus {
    border-color: #667eea;
}

.selector-actions {
    display: flex;
    gap: 4px;
}

.action-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 0.8rem;
}

.action-btn.select-all {
    background: #e8f2ff;
    color: #667eea;
}

.action-btn.select-all:hover {
    background: #667eea;
    color: white;
}

.action-btn.deselect-all {
    background: #f8f9fa;
    color: #666;
}

.action-btn.deselect-all:hover {
    background: #e9ecef;
    color: #333;
}

.selector-body {
    flex: 1;
    overflow: hidden;
}

.column-list {
    max-height: 300px;
    overflow-y: auto;
    padding: 8px;
}

.column-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    margin-bottom: 2px;
}

.column-item:hover {
    background: #f8f9ff;
}

.column-item.selected {
    background: #e8f2ff;
    border-left: 3px solid #667eea;
}

.column-item input[type="checkbox"] {
    margin: 0;
    margin-right: 10px;
    cursor: pointer;
    accent-color: #667eea;
}

.column-item label {
    flex: 1;
    cursor: pointer;
    font-size: 0.85rem;
    color: #333;
    font-weight: 500;
}

.column-item.selected label {
    color: #667eea;
    font-weight: 600;
}

.column-type {
    font-size: 0.7rem;
    color: #999;
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 8px;
}

.no-columns-message {
    text-align: center;
    color: #999;
    padding: 20px;
    font-size: 0.9rem;
}

/* Stats */
.stats {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

/* Content area */
.content {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    overflow: hidden;
}

.view-container {
    min-height: 400px;
}

.view-content {
    padding: 20px;
}

/* Table view */
.table-container {
    overflow-x: auto;
    border-radius: 10px;
    border: 1px solid #e1e5e9;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e1e5e9;
}

th {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

tr:hover {
    background: #f8f9ff;
}

tr:nth-child(even) {
    background: #f8f9fa;
}

tr:nth-child(even):hover {
    background: #f0f2ff;
}

/* Copy Row Button */
.copy-column {
    width: 80px;
    text-align: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.copy-cell {
    text-align: center;
    padding: 8px;
    border-bottom: 1px solid #e1e5e9;
}

.copy-row-btn {
    background: #f8f9fa;
    border: 1px solid #e1e5e9;
    border-radius: 6px;
    padding: 6px 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #667eea;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
}

.copy-row-btn:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.copy-row-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(102, 126, 234, 0.3);
}

.copy-row-btn.copied {
    background: #28a745;
    color: white;
    border-color: #28a745;
    animation: copySuccess 0.3s ease;
}

@keyframes copySuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Tree view */
.tree-container {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.tree-node {
    margin: 5px 0;
    padding: 5px 0;
}

.tree-key {
    font-weight: bold;
    color: #667eea;
}

.tree-value {
    color: #333;
}

.tree-string {
    color: #28a745;
}

.tree-number {
    color: #fd7e14;
}

.tree-boolean {
    color: #dc3545;
}

.tree-null {
    color: #6c757d;
    font-style: italic;
}

.tree-object {
    margin-left: 20px;
    border-left: 2px solid #e1e5e9;
    padding-left: 10px;
}

.tree-array {
    margin-left: 20px;
    border-left: 2px solid #e1e5e9;
    padding-left: 10px;
}

/* JSON view */
.json-container {
    background: #f8f9fa;
    border: 1px solid #e1e5e9;
    border-radius: 8px;
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    white-space: pre-wrap;
    overflow-x: auto;
    max-height: 600px;
    overflow-y: auto;
}

.json-key {
    color: #0066cc;
    font-weight: bold;
}

.json-string {
    color: #008800;
}

.json-number {
    color: #cc6600;
}

.json-boolean {
    color: #cc0000;
    font-weight: bold;
}

.json-null {
    color: #999999;
    font-style: italic;
}

.json-bracket {
    color: #000000;
    font-weight: bold;
}

.json-comma {
    color: #000000;
}

.json-colon {
    color: #000000;
}

.json-item {
    margin-bottom: 20px;
}

.json-item-header {
    font-weight: bold;
    color: #667eea;
    margin-bottom: 10px;
    padding: 8px 12px;
    background: #f0f2ff;
    border-radius: 6px;
    border-left: 4px solid #667eea;
    font-size: 0.9rem;
}

/* Raw view */
.raw-container {
    background: #f8f9fa;
    border: 1px solid #e1e5e9;
    border-radius: 8px;
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    white-space: pre-wrap;
    overflow-x: auto;
    max-height: 600px;
    overflow-y: auto;
}

/* Error message */
.error-message {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    border-radius: 8px;
    padding: 15px;
    margin: 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.error-message i {
    font-size: 1.2rem;
}

/* Loading spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .theme-toggle {
        margin-top: 15px;
    }
    
    .theme-btn {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .control-group {
        min-width: auto;
    }
    
    .stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .upload-area {
        padding: 40px 15px;
    }
    
    .upload-area i {
        font-size: 2rem;
    }
    
    .upload-area h3 {
        font-size: 1.2rem;
    }
    
    .text-input-header i {
        font-size: 2rem;
    }
    
    .text-input-header h3 {
        font-size: 1.2rem;
    }
    
    #textInput {
        min-height: 200px;
        font-size: 0.8rem;
    }
    
    .text-input-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .text-input-actions .btn {
        min-width: 120px;
        width: 100%;
        max-width: 200px;
    }
    
    .column-control-group {
        min-width: auto;
        max-width: none;
    }
    
    .column-selector {
        position: fixed;
        top: 50%;
        left: 50%;
        right: auto;
        transform: translate(-50%, -50%);
        width: 90vw;
        max-width: 400px;
        max-height: 80vh;
    }
    
    .column-selector.active {
        transform: translate(-50%, -50%);
    }
    
    .copy-column {
        width: 60px;
        font-size: 0.8rem;
    }
    
    .copy-row-btn {
        min-width: 28px;
        height: 28px;
        font-size: 0.8rem;
        padding: 4px 6px;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #764ba2;
}

/* Dark theme */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3a3a3a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #404040;
    --accent-primary: #667eea;
    --accent-secondary: #764ba2;
    --hover-bg: #404040;
    --shadow: rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: var(--text-primary);
}

[data-theme="dark"] .upload-area {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .upload-area h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .upload-area p {
    color: var(--text-secondary);
}

[data-theme="dark"] .upload-area:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-secondary);
}

[data-theme="dark"] .upload-area.dragover {
    border-color: #4CAF50;
    background: #1a3a1a;
}

[data-theme="dark"] .text-input-area {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .text-input-header h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .text-input-header p {
    color: var(--text-secondary);
}

[data-theme="dark"] #textInput {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] #textInput:focus {
    border-color: var(--accent-primary);
    background: var(--bg-primary);
}

[data-theme="dark"] #textInput::placeholder {
    color: var(--text-muted);
}

[data-theme="dark"] .upload-tabs {
    background: var(--bg-secondary);
}

[data-theme="dark"] .tab-btn {
    color: var(--text-secondary);
}

[data-theme="dark"] .tab-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
}

[data-theme="dark"] .tab-btn:hover:not(.active) {
    background: var(--hover-bg);
    color: var(--accent-primary);
}

[data-theme="dark"] .controls {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .control-group label {
    color: var(--text-secondary);
}

[data-theme="dark"] .control-group select,
[data-theme="dark"] .control-group input {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .control-group select:focus,
[data-theme="dark"] .control-group input:focus {
    border-color: var(--accent-primary);
}

[data-theme="dark"] .stats {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .stat-label {
    color: var(--text-secondary);
}

[data-theme="dark"] .stat-value {
    color: var(--accent-primary);
}

[data-theme="dark"] .content {
    background: var(--bg-secondary);
}

[data-theme="dark"] table {
    background: var(--bg-secondary);
}

[data-theme="dark"] th {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
}

[data-theme="dark"] tr:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] tr:nth-child(even) {
    background: var(--bg-tertiary);
}

[data-theme="dark"] tr:nth-child(even):hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .copy-column {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
}

[data-theme="dark"] .copy-cell {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .copy-row-btn {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--accent-primary);
}

[data-theme="dark"] .copy-row-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

[data-theme="dark"] .copy-row-btn.copied {
    background: #28a745;
    color: white;
    border-color: #28a745;
}

[data-theme="dark"] td {
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .tree-container {
    color: var(--text-primary);
}

[data-theme="dark"] .tree-key {
    color: var(--accent-primary);
}

[data-theme="dark"] .tree-string {
    color: #4CAF50;
}

[data-theme="dark"] .tree-number {
    color: #FF9800;
}

[data-theme="dark"] .tree-boolean {
    color: #F44336;
}

[data-theme="dark"] .tree-null {
    color: var(--text-muted);
}

[data-theme="dark"] .tree-object,
[data-theme="dark"] .tree-array {
    border-left-color: var(--border-color);
}

[data-theme="dark"] .json-container {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .json-key {
    color: #4fc3f7;
}

[data-theme="dark"] .json-string {
    color: #81c784;
}

[data-theme="dark"] .json-number {
    color: #ffb74d;
}

[data-theme="dark"] .json-boolean {
    color: #f06292;
}

[data-theme="dark"] .json-null {
    color: var(--text-muted);
}

[data-theme="dark"] .json-bracket {
    color: var(--text-primary);
}

[data-theme="dark"] .json-comma {
    color: var(--text-primary);
}

[data-theme="dark"] .json-colon {
    color: var(--text-primary);
}

[data-theme="dark"] .json-item-header {
    color: var(--accent-primary);
    background: var(--bg-primary);
    border-left-color: var(--accent-primary);
}

[data-theme="dark"] .raw-container {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .error-message {
    background: #4a1a1a;
    color: #ff6b6b;
    border-color: #ff5252;
}

[data-theme="dark"] .theme-btn {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .theme-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .column-selector-toggle {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .column-selector-toggle:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

[data-theme="dark"] .column-badge {
    background: var(--accent-primary);
}

[data-theme="dark"] .column-selector {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .selector-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .selector-search input {
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .selector-search input:focus {
    border-color: var(--accent-primary);
}

[data-theme="dark"] .selector-search .fas {
    color: var(--text-muted);
}

[data-theme="dark"] .action-btn.select-all {
    background: rgba(102, 126, 234, 0.2);
    color: var(--accent-primary);
}

[data-theme="dark"] .action-btn.select-all:hover {
    background: var(--accent-primary);
    color: white;
}

[data-theme="dark"] .action-btn.deselect-all {
    background: var(--bg-primary);
    color: var(--text-secondary);
}

[data-theme="dark"] .action-btn.deselect-all:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .column-item:hover {
    background: rgba(102, 126, 234, 0.1);
}

[data-theme="dark"] .column-item.selected {
    background: rgba(102, 126, 234, 0.2);
    border-left-color: var(--accent-primary);
}

[data-theme="dark"] .column-item label {
    color: var(--text-secondary);
}

[data-theme="dark"] .column-item.selected label {
    color: var(--accent-primary);
}

[data-theme="dark"] .column-type {
    background: var(--bg-primary);
    color: var(--text-muted);
}

[data-theme="dark"] .no-columns-message {
    color: var(--text-muted);
}

/* Scrollbar dark theme */
[data-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}