/*
===============================================================================
Mozhii RAG Data Platform - Main Stylesheet
===============================================================================
Modern, clean UI design with support for Tamil text rendering.

Design Philosophy:
    - Clean and minimal
    - High contrast for readability
    - Tamil-friendly typography
    - Consistent spacing and components
    - Accessible color choices

Color Palette:
    - Primary: #6366F1 (Indigo)
    - Secondary: #8B5CF6 (Purple)
    - Success: #10B981 (Emerald)
    - Warning: #F59E0B (Amber)
    - Error: #EF4444 (Red)
    - Background: #0F172A (Slate 900)
    - Surface: #1E293B (Slate 800)
    - Text: #F1F5F9 (Slate 100)
===============================================================================
*/

/* =============================================================================
   LOGIN SCREEN
============================================================================= */
.login-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
}
.login-overlay.hidden { display: none; }
.login-card {
    background: #1E293B;
    border: 1px solid rgba(99,102,241,0.25);
    border-radius: 1rem;
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 380px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.login-logo { margin-bottom: 1rem; }
.login-title {
    color: #F1F5F9;
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0 0 0.25rem;
}
.login-subtitle {
    color: #94A3B8;
    font-size: 0.85rem;
    margin: 0 0 1.5rem;
}
.login-field {
    text-align: left;
    margin-bottom: 1rem;
}
.login-field label {
    display: block;
    color: #CBD5E1;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 0.35rem;
}
.login-field input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid #334155;
    border-radius: 0.5rem;
    background: #0F172A;
    color: #F1F5F9;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.login-field input:focus {
    border-color: #6366F1;
}
.login-error {
    color: #EF4444;
    font-size: 0.8rem;
    min-height: 1.2em;
    margin: 0 0 0.75rem;
}
.login-btn {
    width: 100%;
    padding: 0.65rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}

/* =============================================================================
   CSS VARIABLES - Design Tokens
============================================================================= */
:root {
    /* Primary Colors */
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --primary-light: #818CF8;
    --primary-dark: #4338CA;
    
    /* Secondary Colors */
    --secondary: #8B5CF6;
    --secondary-hover: #7C3AED;
    
    /* Semantic Colors */
    --success: #10B981;
    --success-light: #34D399;
    --warning: #F59E0B;
    --warning-light: #FBBF24;
    --error: #EF4444;
    --error-light: #F87171;
    --info: #3B82F6;
    
    /* Background Colors */
    --bg-dark: #0F172A;
    --bg-surface: #1E293B;
    --bg-elevated: #334155;
    --bg-hover: #475569;
    
    /* Text Colors */
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --text-dark: #0F172A;
    
    /* Border Colors */
    --border: #334155;
    --border-light: #475569;
    --border-focus: #6366F1;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-tamil: 'Noto Sans Tamil', 'Inter', sans-serif;
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

/* =============================================================================
   RESET & BASE STYLES
============================================================================= */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Tamil text styling */
.tamil-text {
    font-family: var(--font-tamil);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* =============================================================================
   HEADER
============================================================================= */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-dark) 100%);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

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

.logo {
    width: 48px;
    height: 48px;
    color: var(--primary);
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.brand-text p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.admin-toggle {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.admin-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--primary);
}

.admin-toggle svg {
    width: 20px;
    height: 20px;
}

.pending-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: var(--error);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pending-badge:empty,
.pending-badge[data-count="0"] {
    display: none;
}

/* =============================================================================
   TAB NAVIGATION
============================================================================= */
.tab-nav {
    display: flex;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.tab-btn:hover {
    background: var(--bg-elevated);
}

.tab-btn.active {
    background: var(--bg-elevated);
    border-color: var(--primary);
}

.tab-icon {
    font-size: 1.5rem;
}

.tab-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tab-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.tab-btn.active .tab-label {
    color: var(--primary-light);
}

/* =============================================================================
   MAIN CONTENT
============================================================================= */
.main-content {
    padding: var(--spacing-xl);
    max-width: 1600px;
    margin: 0 auto;
}

.tab-panel {
    display: none;
    animation: fadeIn var(--transition-base);
}

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

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

.panel-header {
    margin-bottom: var(--spacing-xl);
}

.panel-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.panel-header p {
    color: var(--text-secondary);
}

/* =============================================================================
   FORM STYLES
============================================================================= */
.form-container {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.char-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-base);
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

input[type="text"]:disabled,
select:disabled,
textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

textarea {
    resize: vertical;
    min-height: 120px;
}

textarea.tamil-text {
    line-height: 2;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

/* =============================================================================
   BUTTONS
============================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-error {
    background: var(--error);
    color: white;
}

.btn-error:hover:not(:disabled) {
    background: #DC2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

.btn-icon {
    font-size: 1rem;
}

.full-width {
    width: 100%;
}

/* =============================================================================
   SPLIT PANEL LAYOUT
============================================================================= */
.split-panel {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-lg);
    min-height: 600px;
}

.chunking-layout {
    grid-template-columns: 250px 1fr 350px;
}

.file-list-panel,
.cleaning-form-panel,
.source-content-panel,
.chunk-form-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.panel-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
}

.panel-section-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

/* =============================================================================
   FILE LIST
============================================================================= */
.file-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-elevated);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.file-item:hover {
    background: var(--bg-hover);
}

.file-item.selected {
    background: var(--primary);
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
}

.file-icon {
    font-size: 1.25rem;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.file-status {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.file-status.pending {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.file-status.approved {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.file-status.not_started {
    background: rgba(100, 116, 139, 0.2);
    color: var(--text-muted);
}

/* =============================================================================
   CONTENT PREVIEW
============================================================================= */
.content-preview,
.source-content {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    min-height: 150px;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.source-content {
    flex: 1;
    min-height: 400px;
    max-height: none;
}

.placeholder {
    color: var(--text-muted);
    font-style: italic;
}

/* =============================================================================
   CHUNKS LIST
============================================================================= */
.chunks-list-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.chunks-list-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.chunks-list {
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.chunk-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

.chunk-item .chunk-id {
    font-weight: 500;
    color: var(--primary-light);
}

.chunk-item .chunk-preview {
    flex: 1;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* =============================================================================
   ADMIN SIDEBAR
============================================================================= */
.admin-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 380px;
    height: 100vh;
    background: var(--bg-surface);
    border-left: 1px solid var(--border);
    z-index: var(--z-modal);
    transition: right var(--transition-slow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.admin-sidebar.open {
    right: 0;
}

/* Scrollable content area inside the sidebar */
.sidebar-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    padding-bottom: 1.5rem;
    /* Custom thin scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.sidebar-body::-webkit-scrollbar {
    width: 5px;
}

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

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

.sidebar-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.close-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-base);
}

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

.stats-overview {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.stat-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.pending-section {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.pending-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.pending-list {
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    /* Thin scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.pending-list::-webkit-scrollbar {
    width: 4px;
}

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

.pending-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
}

.pending-item-name {
    font-size: 0.875rem;
    font-weight: 500;
}

.pending-item-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.pending-item-actions button {
    width: 28px;
    height: 28px;
    padding: 0;
    font-size: 0.875rem;
}

.sync-section {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
    margin-top: var(--spacing-md);
}

.sync-info {
    display: block;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* =============================================================================
   TOAST NOTIFICATIONS
============================================================================= */
.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideIn var(--transition-base);
    max-width: 400px;
}

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

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--error);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.info {
    border-left: 4px solid var(--info);
}

.toast-icon {
    font-size: 1.25rem;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 0.875rem;
}

.toast-message {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    font-size: 1rem;
}

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

/* =============================================================================
   MODAL
============================================================================= */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.modal {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.visible .modal {
    transform: scale(1);
}

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

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

/* =============================================================================
   EMPTY STATE
============================================================================= */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-muted);
}

.empty-state p {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.empty-state span {
    font-size: 0.875rem;
}

.empty-state.small {
    padding: var(--spacing-md);
}

.empty-state.small p {
    font-size: 0.875rem;
}

/* =============================================================================
   RESPONSIVE DESIGN
============================================================================= */
@media (max-width: 1200px) {
    .chunking-layout {
        grid-template-columns: 1fr;
    }
    
    .source-content-panel {
        order: 1;
    }
    
    .file-list-panel {
        order: 2;
    }
    
    .chunk-form-panel {
        order: 3;
    }
}

@media (max-width: 768px) {
    .header {
        padding: var(--spacing-md);
    }
    
    .brand-text h1 {
        font-size: 1.125rem;
    }
    
    .brand-text p {
        display: none;
    }
    
    .tab-nav {
        padding: var(--spacing-sm);
    }
    
    .tab-btn {
        padding: var(--spacing-sm);
    }
    
    .tab-desc {
        display: none;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .split-panel {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .admin-sidebar {
        width: 100%;
        right: -100%;
    }
}

/* =============================================================================
   SCROLLBAR STYLES
============================================================================= */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: var(--radius-full);
}

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

/* =============================================================================
   UTILITY CLASSES
============================================================================= */
.text-success { color: var(--success) !important; }
.text-error { color: var(--error) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--text-muted) !important; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden { display: none !important; }

/* =============================================================================
   HUGGINGFACE CONFIG SECTION
============================================================================= */
.hf-config-section {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.hf-config-section .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    cursor: pointer;
    transition: background var(--transition-base);
}

.hf-config-section .section-header:hover {
    background: var(--bg-hover);
}

.hf-config-section .section-header h4 {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 500;
}

.hf-config-section .toggle-icon {
    color: var(--text-muted);
    font-size: 0.75rem;
    transition: transform var(--transition-base);
}

.hf-config-content {
    padding: var(--spacing-md);
    padding-top: 0;
    border-top: 1px solid var(--border);
}

.hf-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.8rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-indicator.connected {
    background: var(--success);
    box-shadow: 0 0 6px var(--success);
}

.status-indicator.partial {
    background: var(--warning);
    box-shadow: 0 0 6px var(--warning);
}

.status-indicator.disconnected {
    background: var(--error);
    box-shadow: 0 0 6px var(--error);
}

.form-group.compact {
    margin-bottom: var(--spacing-md);
}

.form-group.compact label {
    font-size: 0.75rem;
    margin-bottom: var(--spacing-xs);
}

.form-group.compact .form-input {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

.form-group.compact .form-hint {
    font-size: 0.7rem;
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: border-color var(--transition-base);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* =============================================================================
   EDIT MODAL STYLES
============================================================================= */
.edit-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.edit-modal {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.edit-modal-overlay.visible .edit-modal {
    transform: translateY(0);
}

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

.edit-modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

.edit-modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.edit-meta-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.edit-type-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.edit-type-badge.raw {
    background: var(--info);
}

.edit-type-badge.cleaned {
    background: var(--success);
}

.edit-filename {
    font-family: monospace;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.edit-textarea {
    min-height: 300px;
    font-size: 1rem;
}

.edit-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
    background: var(--bg-elevated);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* =============================================================================
   PENDING ITEM STYLES (ENHANCED)
============================================================================= */
.pending-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
    transition: background var(--transition-base);
}

.pending-item:hover {
    background: var(--bg-hover);
}

.pending-item-name {
    font-size: 0.8rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    margin-right: var(--spacing-sm);
}

.pending-item-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.pending-item-actions .btn-sm {
    padding: 4px 8px;
    font-size: 0.7rem;
    min-width: 28px;
}

/* Clickable section header */
.section-header.clickable {
    cursor: pointer;
}

.section-header.clickable:hover {
    background: var(--bg-hover);
}