/* Synthetic Data Generator V2 - Dark Mode */

:root {
    /* Dark Mode Colors */
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --bg-card: #1E293B;
    --bg-input: #334155;
    
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-tertiary: #94A3B8;
    
    --border: #475569;
    --border-light: #64748B;
    
    --accent: #10B981;
    --accent-hover: #059669;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    margin-bottom: 0;
    width: 100%;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    width: 36px;
    height: 36px;
    background: var(--accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.title-section h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.title-section p {
    color: var(--text-secondary);
    font-size: 14px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feedback-button-header {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(16, 185, 129, 0.1);
    border: 1.5px solid rgba(16, 185, 129, 0.3);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feedback-button-header:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.feedback-button-header svg {
    flex-shrink: 0;
    stroke: var(--accent);
}

.beta-badge {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: calc(100vh - 180px);
}

/* Tips Banner */
.tips-banner {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    margin: 24px 0 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 13px;
}

.tips-icon {
    font-size: 14px;
    flex-shrink: 0;
}

/* Key Features Banner */
.key-features-banner {
    margin: 8px 0;
    padding: 6px 0;
    background: var(--bg-secondary);
    border-radius: 4px;
    border: 1px solid var(--border);
}

.features-content {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.key-features {
    display: flex;
    gap: 12px;
    align-items: center;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-primary);
    font-weight: 500;
}

.feature-item .feature-icon {
    font-size: 0.8rem;
}

.feature-item .feature-text {
    font-size: 0.7rem;
}

.btn-view-features {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    text-decoration: none;
    display: inline-block;
}

.btn-view-features:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    color: white;
    text-decoration: none;
}

/* Features Modal */
.features-modal-content {
    max-height: 70vh;
    overflow-y: auto;
}

.features-modal-content .features-section {
    margin-bottom: 40px;
}

.features-modal-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border);
}

.features-modal-content .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.features-modal-content .feature-card {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.2s ease;
}

.features-modal-content .feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-primary);
}

.features-modal-content .feature-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

.features-modal-content .feature-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.features-modal-content .feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Roadmap Section */
.roadmap-section {
    margin-top: 40px;
}

.roadmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.roadmap-item {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    position: relative;
    transition: all 0.2s ease;
}

.roadmap-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.roadmap-icon {
    font-size: 1.5rem;
    margin-bottom: 12px;
    display: block;
}

.roadmap-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.roadmap-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 12px;
}

.roadmap-status {
    background: var(--accent-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    position: absolute;
    top: 12px;
    right: 12px;
}

/* Features Page */
.features-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.features-page .features-header {
    text-align: center;
    margin-bottom: 60px;
}

.features-page .features-header h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.features-page .features-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-page .features-section,
.features-page .roadmap-section,
.features-page .admin-section {
    margin-bottom: 60px;
}

.features-page h2 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    text-align: center;
}

.features-page .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.features-page .feature-card {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.features-page .feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.features-page .feature-card:hover::before {
    transform: scaleX(1);
}

.features-page .feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.features-page .feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.features-page .feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.features-page .feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1rem;
}

/* Roadmap Section */
.features-page .roadmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.features-page .roadmap-item {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border);
    position: relative;
    transition: all 0.3s ease;
}

.features-page .roadmap-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

.features-page .roadmap-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    display: block;
}

.features-page .roadmap-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.features-page .roadmap-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.features-page .roadmap-status {
    background: var(--accent-primary);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    position: absolute;
    top: 20px;
    right: 20px;
}

/* Admin Section */
.features-page .admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.features-page .admin-card {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.2s ease;
}

.features-page .admin-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.features-page .admin-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

.features-page .admin-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.features-page .admin-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* GitHub Link */
.github-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.github-link:hover {
    background: #333;
    color: white;
    border-color: #333;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.github-link svg {
    width: 14px;
    height: 14px;
}

/* LinkedIn Link */
.linkedin-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.linkedin-link:hover {
    background: #0077B5;
    color: white;
    border-color: #0077B5;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.linkedin-link svg {
    width: 14px;
    height: 14px;
}

/* Changelog Link */
.changelog-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.changelog-link:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.changelog-link svg {
    width: 14px;
    height: 14px;
}

/* Back Button */
.btn-back {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-back:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .features-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .key-features {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .features-modal-content .features-grid,
    .roadmap-grid {
        grid-template-columns: 1fr;
    }
    
    .features-page {
        padding: 20px 16px;
    }
    
    .features-page .features-header h1 {
        font-size: 2.5rem;
    }
    
    .features-page h2 {
        font-size: 2rem;
    }
    
    .features-page .features-grid,
    .features-page .roadmap-grid,
    .features-page .admin-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border);
    width: fit-content;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow);
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Builder Layout */
.builder-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
    min-height: 600px;
}

/* Field Types Panel */
.field-types-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    height: fit-content;
    max-height: 700px;
    overflow-y: auto;
}

.field-types-panel h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.panel-description {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 12px;
}

/* Collapsible Field Categories */
.field-category {
    border-bottom: 1px solid var(--border);
}

.field-category:last-child {
    border-bottom: none;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    cursor: pointer;
    transition: all 0.2s ease;
    pointer-events: auto;
    position: relative;
    z-index: 1;
}

.category-header:hover {
    background: var(--bg-secondary);
    margin: 0 -12px;
    padding: 12px;
    border-radius: 4px;
}

.toggle-icon {
    font-size: 12px;
    color: var(--text-tertiary);
    width: 16px;
    text-align: center;
    transition: transform 0.2s ease;
}

.category-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.category-count {
    font-size: 11px;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 10px;
}

.category-fields {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding-left: 24px;
}

.category-fields.expanded {
    max-height: 400px;
    padding: 8px 0 8px 24px;
}

.field-type {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    cursor: grab;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    font-size: 12px;
    border-radius: 4px;
    margin: 1px 0;
    pointer-events: auto;
    position: relative;
    z-index: 10;
}

.field-type:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 6px 8px;
    margin: 1px -8px;
}

.field-type:active {
    cursor: grabbing;
}

.field-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    flex-shrink: 0;
}

.field-name {
    flex: 1;
    font-weight: 500;
}

/* Schema Panel */
.schema-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.panel-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-add-field {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 6px;
    color: white;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-add-field:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    transform: translateY(-1px);
}

.btn-add-field svg {
    width: 12px;
    height: 12px;
}

.btn-clear {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-clear:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

/* Enhanced Schema Table Container */
.schema-table-container {
    flex: 1;
    min-height: 300px;
    margin-bottom: 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-secondary);
}

.schema-table-header {
    display: grid;
    grid-template-columns: 60px 1fr 1fr 120px 80px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.header-cell {
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.header-reorder {
    padding: 12px 8px;
    text-align: center;
}

.header-actions {
    padding: 12px 8px;
    text-align: center;
}

/* Schema Drop Zone */
.schema-drop-zone {
    min-height: 200px;
    transition: all 0.3s ease;
    position: relative;
}

.schema-drop-zone.drag-over {
    background: rgba(16, 185, 129, 0.05);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-tertiary);
    gap: 12px;
    text-align: center;
}

.empty-state svg {
    opacity: 0.6;
}

.empty-state p {
    font-size: 12px;
    max-width: 300px;
    line-height: 1.4;
}

/* Enhanced Schema Fields */
.schema-field {
    display: grid;
    grid-template-columns: 60px 1fr 1fr 120px 80px;
    align-items: center;
    padding: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    transition: all 0.2s ease;
    animation: slideIn 0.3s ease;
    position: relative;
}

.schema-field:hover {
    background: var(--bg-tertiary);
}


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


/* Field Cell */
.field-cell {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    min-height: 48px;
}

/* Reorder Column */
.field-reorder {
    padding: 12px 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
}

.field-name-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    transition: border-color 0.2s ease;
}

.field-name-input:focus {
    outline: none;
    border-color: var(--accent);
}

/* Type Dropdown */
.field-type-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.field-type-select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Options Column */
.field-options {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    font-size: 12px;
    color: var(--text-secondary);
}

.blank-input {
    width: 60px;
    padding: 4px 6px;
    border: 1px solid var(--border);
    border-radius: 3px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 11px;
    text-align: center;
}

.blank-input:focus {
    outline: none;
    border-color: var(--accent);
}

/* Actions Column */
.field-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 8px;
    min-height: 48px;
}

.reorder-buttons {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.btn-move-up, .btn-move-down {
    width: 18px;
    height: 14px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 2px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
    font-size: 8px;
}

.btn-move-up:hover, .btn-move-down:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-move-up:disabled, .btn-move-down:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Remove Button */
.btn-remove {
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    color: var(--error);
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.2s ease;
    opacity: 0.7;
}

.btn-remove:hover {
    background: rgba(239, 68, 68, 0.1);
    opacity: 1;
    transform: scale(1.1);
}

/* Action Buttons Bar */
.action-buttons-bar {
    display: flex;
    gap: 12px;
    margin: 20px 0;
    padding: 16px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.btn-action {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-action:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.btn-action svg {
    flex-shrink: 0;
}

/* Generation Config */
.generation-config {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    margin-bottom: 20px;
}

.config-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.config-row label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 12px;
}

.config-row input,
.config-row select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    transition: border-color 0.2s ease;
}

.config-row input:focus,
.config-row select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Buttons */
.btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Chat Layout - Vertical Stack */
.chat-layout {
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-height: 600px;
}

/* Chat container takes top half */
.chat-container {
    flex: 1;
    min-height: 400px;
}

/* Data preview takes bottom half */
.data-preview {
    flex: 1;
    min-height: 400px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.preview-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
}

.preview-actions {
    display: flex;
    gap: 12px;
}

.btn-preview {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* Feedback Button */
.feedback-link {
    color: #ffffff !important;
    text-decoration: none !important;
    font-size: 13px;
    font-weight: 500;
    margin-left: 20px;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(5, 150, 105, 0.15));
    border: 1.5px solid rgba(16, 185, 129, 0.4);
    cursor: pointer;
}

.feedback-link:hover {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.25), rgba(5, 150, 105, 0.25));
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
    color: #ffffff !important;
}

.feedback-link:active {
    transform: translateY(-1px);
}

.feedback-link svg {
    flex-shrink: 0;
    stroke: #ffffff;
}

.feedback-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feedback-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.feedback-section label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.rating-container {
    display: flex;
    gap: 12px;
    align-items: center;
}

.star-rating {
    display: flex;
    gap: 4px;
}

.star {
    font-size: 32px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.star.active,
.star:hover {
    color: #fbbf24;
}

.feedback-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    resize: vertical;
    min-height: 100px;
}

.feedback-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.feedback-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.feedback-checkbox input[type="checkbox"] {
    margin-top: 3px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.feedback-checkbox label {
    font-weight: normal;
    cursor: pointer;
}

.feedback-email {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
}

.feedback-email:focus {
    outline: none;
    border-color: var(--primary);
}

/* AI Schema Management */
.schema-management {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.btn-add-field {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-add-field:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-add-field:active {
    transform: translateY(0);
}

.btn-clear-all {
    padding: 8px 16px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-clear-all:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* AI Schema Table Styles */
.schema-table {
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.schema-table-header {
    display: grid;
    grid-template-columns: 60px 1fr 1fr 120px 80px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.header-cell {
    padding: 12px 16px;
    font-weight: 600;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.schema-field {
    display: grid;
    grid-template-columns: 60px 1fr 1fr 120px 80px;
    border-bottom: 1px solid var(--border);
    transition: background-color 0.2s ease;
}

.schema-field:hover {
    background: var(--bg-hover);
}

.schema-field:last-child {
    border-bottom: none;
}

.field-cell {
    padding: 8px 16px;
    display: flex;
    align-items: center;
    min-height: 48px;
}

.reorder-header {
    justify-content: center;
}

.reorder-cell {
    justify-content: center;
}

.reorder-controls {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.reorder-btn {
    width: 20px;
    height: 20px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    transition: all 0.2s ease;
}

.reorder-btn:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.reorder-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.field-name-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
}

.field-name-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.field-type-select {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
}

.field-type-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.blank-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-right: 4px;
}

.blank-percentage {
    width: 50px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px 8px;
    color: var(--text-primary);
    font-size: 12px;
    text-align: center;
}

.blank-percentage:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.blank-percent {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: 4px;
}

.remove-field-btn {
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--danger);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.remove-field-btn:hover:not(:disabled) {
    background: var(--danger-light);
    color: var(--danger);
}

.remove-field-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.chat-container {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    max-height: 500px;
}

.message {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    animation: fadeIn 0.3s ease;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: var(--success);
}

.message-content {
    flex: 1;
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: 12px;
    line-height: 1.6;
}

.message-hint {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
}

.ai-input-container {
    padding: 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.input-section {
    margin-bottom: 20px;
}

.input-section label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.topic-input-container {
    position: relative;
    margin-bottom: 12px;
}

.topic-input {
    width: 100%;
    padding: 12px 50px 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    resize: vertical;
    min-height: 60px;
    font-family: inherit;
    box-sizing: border-box;
}

.btn-send {
    position: absolute;
    right: 8px;
    top: 8px;
    bottom: 8px;
    width: 36px;
    background: var(--primary);
    border: none;
    border-radius: 4px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-send:hover {
    background: var(--primary-dark);
    transform: scale(1.02);
}

.btn-send:active {
    transform: scale(0.98);
}

.topic-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.field-count-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.field-count-container label {
    margin-bottom: 0;
    white-space: nowrap;
}

.field-count-input {
    width: 80px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    text-align: center;
}

.field-count-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.input-divider {
    text-align: center;
    margin: 20px 0;
    position: relative;
}

.input-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.input-divider span {
    background: var(--bg-secondary);
    padding: 0 16px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sample-data-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    resize: vertical;
    min-height: 100px;
}

.sample-data-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.ai-action-buttons {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.ai-action-buttons .btn-secondary,
.ai-action-buttons .btn-primary {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.ai-action-buttons .btn-secondary {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.ai-action-buttons .btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
}

.ai-action-buttons .btn-primary {
    background: var(--primary);
    border: 1px solid var(--primary);
    color: white;
}

.ai-action-buttons .btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

#chat-input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 14px;
    resize: none;
    background: var(--bg-input);
    color: var(--text-primary);
}

#chat-input:focus {
    outline: none;
    border-color: var(--accent);
}


/* Data Preview */
.data-preview {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.data-preview h3 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.preview-content {
    flex: 1;
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 16px;
    overflow: auto;
    max-height: 450px;
}

.preview-placeholder {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.preview-table th {
    background: var(--bg-tertiary);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    color: var(--text-primary);
}

.preview-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.preview-table tr:hover {
    background: var(--bg-tertiary);
}

.download-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.btn-download {
    flex: 1;
    padding: 12px;
    background: var(--success);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-download:disabled,
.dropdown-toggle:disabled {
    background: #666 !important;
    color: #999 !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
    transform: none !important;
    box-shadow: none !important;
    border: none !important;
}

.btn-download:disabled:hover,
.dropdown-toggle:disabled:hover {
    transform: none !important;
    box-shadow: none !important;
    background: #666 !important;
    color: #999 !important;
}

/* More specific selector for download button */
.download-actions .btn-download:disabled,
.download-actions .dropdown-toggle:disabled {
    background: #666 !important;
    color: #999 !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
    transform: none !important;
    box-shadow: none !important;
    border: none !important;
}

/* Pulsating animation for enabled download button */
.download-actions .btn-download:not(:disabled),
.download-actions .dropdown-toggle:not(:disabled),
.btn-download:not(:disabled),
.dropdown-toggle:not(:disabled) {
    animation: downloadPulse 2s ease-in-out infinite !important;
}

@keyframes downloadPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    }
}

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

/* Preview Tabs for AI Mode */
.preview-tabs-container {
    margin-top: 20px;
}

/* Schema Actions Button - Ensure it's green */
.schema-actions .btn-primary {
    background: var(--accent) !important;
    color: white !important;
    border: none !important;
}

.schema-actions .btn-primary:hover {
    background: var(--accent-hover) !important;
    transform: translateY(-1px) !important;
    box-shadow: var(--shadow-lg) !important;
}

.preview-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
    overflow: visible;
    width: 100%;
}

.preview-tab {
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    white-space: nowrap;
    flex-shrink: 0;
}

.preview-tab:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.preview-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.preview-tab svg {
    margin-right: 6px;
}

/* Preview Tab Content */
.preview-tab-content {
    display: none;
}

.preview-tab-content.active {
    display: block;
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

#loading-text {
    color: white;
    margin-top: 20px;
    font-size: 16px;
    font-weight: 600;
}

/* Modal System */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

/* Generate Full Data Modal System */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 90vw;
    max-height: 90vh;
    width: 1200px;
    height: 80vh;
    overflow: hidden;
    transform: translateY(-20px) scale(0.95);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    margin: auto;
}

.modal-backdrop.active .modal-container {
    transform: translateY(0) scale(1);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 95vw;
    max-height: 95vh;
    width: 1200px;
    height: 80vh;
    overflow: hidden;
    transform: translateY(-20px) scale(0.95);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    margin: auto;
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 4px 0 0 0;
}

.modal-close {
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    flex: 1;
    overflow: visible;
    display: flex;
    flex-direction: column;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid var(--border);
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

/* Modal Specific Elements */
.preview-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    border-radius: 8px 8px 0 0;
    flex-shrink: 0;
    overflow: visible;
    width: 100%;
}

.preview-tabs .tab-btn {
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 8px 8px 0 0;
    white-space: nowrap;
    flex-shrink: 0;
}

.preview-tabs .tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: var(--bg-card);
    color: var(--text-primary);
}

.preview-tabs .tab-btn:hover:not(.active) {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.preview-content {
    flex: 1 1 auto;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    background: var(--bg-secondary);
    position: relative;
    min-height: 400px;
    width: 1100px !important;
    height: 450px !important;
}

.preview-view {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.preview-view.active {
    display: flex !important;
}

.preview-view:not(.active) {
    display: none !important;
}

.preview-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: auto;
}

.preview-controls label {
    font-size: 13px;
    color: var(--text-secondary);
}

.preview-controls input {
    width: 80px;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
}

.example-textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 13px;
    line-height: 1.5;
    resize: vertical;
    min-height: 200px;
}

.example-textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.btn-primary, .btn-secondary {
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

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

.btn-secondary {
    background: transparent;
    border-color: var(--border);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

/* Preview Table */
.preview-table-container {
    overflow-x: auto;
    overflow-y: auto;
    width: 100%;
    height: 100%;
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.preview-table th,
.preview-table td {
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.preview-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    position: sticky;
    top: 0;
}

.preview-table td {
    color: var(--text-secondary);
}

.preview-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.preview-raw {
    background: var(--bg-tertiary);
    padding: 16px;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 12px;
    line-height: 1.4;
    color: var(--text-secondary);
    overflow: auto;
    flex: 1;
    width: 100%;
    min-height: 350px;
    margin: 0;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 100px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    animation: slideInRight 0.3s ease-out;
    min-width: 300px;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.removing {
    animation: slideOutRight 0.3s ease-out forwards;
}

@keyframes slideOutRight {
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-size: 14px;
}

.toast-message {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    font-size: 18px;
    line-height: 1;
    flex-shrink: 0;
    transition: color 0.2s ease;
}

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

.toast.success {
    border-left: 3px solid var(--success);
}

.toast.error {
    border-left: 3px solid var(--error);
}

.toast.warning {
    border-left: 3px solid var(--warning);
}

.toast.info {
    border-left: 3px solid var(--accent);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 3rem;
    width: 100%;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-left p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-right p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}


.features-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.features-link:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.features-link svg {
    width: 14px;
    height: 14px;
}


.version-text {
    color: var(--text-muted);
    font-weight: 500;
}

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

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.loading-spinner p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
}

/* RAW and SQL Preview Styling */
.raw-preview-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: auto;
    max-height: 400px;
}

.raw-preview-content {
    margin: 0;
    padding: 1rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.sql-preview-content .sql-content {
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: 8px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.sql-preview-content .sql-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.sql-preview-content .sql-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.sql-preview-content .copy-sql-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sql-preview-content .copy-sql-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.sql-preview-content .sql-code {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: auto;
    max-height: 400px;
}

.sql-preview-content .sql-code pre {
    margin: 0;
    padding: 1rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.sql-preview-content .sql-code code {
    color: var(--text-primary);
    background: none;
    padding: 0;
}

.sql-preview-content .sql-error {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.sql-preview-content .sql-error p {
    margin: 0;
    font-style: italic;
}

/* SQL Tab Styling */
.sql-content {
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: 8px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.sql-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.sql-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.copy-sql-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.copy-sql-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.sql-code {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: auto;
    max-height: 600px;
}

.sql-code pre {
    margin: 0;
    padding: 1rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.sql-code code {
    color: var(--text-primary);
    background: none;
    padding: 0;
}

.sql-error {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.sql-error p {
    margin: 0;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .builder-layout {
        grid-template-columns: 1fr;
    }

    .field-types-panel {
        max-height: 300px;
    }
    
    .chat-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .title-section h1 {
        font-size: 20px;
    }

    .tabs {
        width: 100%;
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .generation-config {
        grid-template-columns: 1fr;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ===================================
   Rating Widget (Reinforcement Learning)
   =================================== */

.rating-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-secondary);
    border: 2px solid var(--accent);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 9999;
    animation: slideInUp 0.3s ease-out;
    max-width: 320px;
}

.rating-widget.fade-out {
    animation: slideOutDown 0.5s ease-out forwards;
}

@keyframes slideInUp {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideOutDown {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(100px);
        opacity: 0;
    }
}

.rating-content {
    text-align: center;
}

.rating-question {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.rating-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.rating-btn {
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: 50%;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.rating-btn svg {
    stroke: var(--text-secondary);
    transition: all 0.3s ease;
}

.rating-btn:hover {
    transform: scale(1.1);
    border-color: var(--accent);
}

.rating-btn.thumbs-up:hover {
    background: rgba(16, 185, 129, 0.2);
}

.rating-btn.thumbs-up:hover svg {
    stroke: #10b981;
}

.rating-btn.thumbs-down:hover {
    background: rgba(239, 68, 68, 0.2);
}

.rating-btn.thumbs-down:hover svg {
    stroke: #ef4444;
}

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

/* ===============================
   Preview Tabs Styling
   =============================== */

.preview-tabs-container {
    margin-top: 20px;
}

.preview-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
}

.preview-tab {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -2px;
}

.preview-tab:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.preview-tab.active {
    color: var(--accent-primary, #10B981);
    border-bottom-color: var(--accent-primary, #10B981);
}

.preview-tab svg {
    opacity: 0.7;
}

.preview-tab.active svg {
    opacity: 1;
}

.preview-tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.preview-tab-content.active {
    display: block;
}

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

.table-preview-content {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 20px;
    max-height: 600px;
    overflow: auto;
}

.table-preview-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.table-preview-content th {
    background: var(--bg-tertiary);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1;
}

.table-preview-content td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}

.table-preview-content tr:hover {
    background: var(--bg-tertiary);
}

/* ===============================
   Download Dropdown Styling
   =============================== */

.download-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.btn-generate-full {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
}

.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 1000;
    overflow: hidden;
    flex-direction: column;
}

.dropdown-menu.show {
    display: flex;
    animation: slideDown 0.2s ease;
}

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

.dropdown-menu button {
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s;
}

.dropdown-menu button:hover {
    background: var(--bg-tertiary);
}

.dropdown-menu button:not(:last-child) {
    border-bottom: 1px solid var(--border);
}

/* Form Group Styling for Modals */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.input-field {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input, #334155);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-primary, #10B981);
}

.input-field::placeholder {
    color: var(--text-tertiary);
}