/* ============================================
   On-Device RAG - Premium Dark Theme
   ============================================ */

:root {
    /* Color Palette */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-glass: rgba(22, 27, 34, 0.8);
    
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    
    --accent-primary: #58a6ff;
    --accent-secondary: #1f6feb;
    --accent-success: #3fb950;
    --accent-warning: #d29922;
    --accent-error: #f85149;
    
    --border-color: #30363d;
    --border-highlight: #58a6ff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #1f6feb 0%, #58a6ff 100%);
    --gradient-success: linear-gradient(135deg, #238636 0%, #3fb950 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(88, 166, 255, 0.3);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

/* ============================================
   Base Styles
   ============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

/* ============================================
   Layout
   ============================================ */

.app-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--space-lg);
}

.header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding: var(--space-xl) 0;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.header .subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ============================================
   Cards (Glass Morphism)
   ============================================ */

.card {
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
    border-color: var(--border-highlight);
    box-shadow: var(--shadow-glow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ============================================
   Form Elements
   ============================================ */

textarea, input[type="text"] {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    padding: var(--space-md);
    transition: border-color 0.2s, box-shadow 0.2s;
}

textarea:focus, input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.2);
}

textarea {
    min-height: 150px;
    resize: vertical;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.5;
}

textarea::placeholder, input::placeholder {
    color: var(--text-muted);
}

/* ============================================
   Buttons
   ============================================ */

.button-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-top: var(--space-md);
}

button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-danger {
    background: transparent;
    color: var(--accent-error);
    border: 1px solid var(--accent-error);
}

.btn-danger:hover:not(:disabled) {
    background: rgba(248, 81, 73, 0.1);
}

/* ============================================
   Query Section
   ============================================ */

.query-row {
    display: flex;
    gap: var(--space-sm);
}

.query-row input {
    flex: 1;
}

.query-row select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-sans);
    cursor: pointer;
}

/* ============================================
   Results Section
   ============================================ */

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
}

#output {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: var(--space-lg);
    min-height: 150px;
    font-size: 1rem;
    line-height: 1.7;
    white-space: pre-wrap;
}

#output:empty::before {
    content: 'Answer will appear here...';
    color: var(--text-muted);
}

.no-llm-notice {
    color: var(--accent-warning);
    font-style: italic;
    margin-bottom: var(--space-md);
}

/* ============================================
   Context Chunks
   ============================================ */

#context {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.context-chunk {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: var(--space-md);
    border-left: 3px solid var(--accent-primary);
    transition: border-color 0.2s;
}

.context-chunk:nth-child(1) {
    border-left-color: var(--accent-success);
}

.context-chunk:nth-child(2) {
    border-left-color: var(--accent-warning);
}

.context-chunk:nth-child(3) {
    border-left-color: var(--accent-error);
}

.chunk-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.chunk-number {
    font-weight: 700;
    color: var(--accent-primary);
}

.chunk-scores {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.score {
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
}

.score.semantic { color: var(--accent-primary); }
.score.bm25 { color: var(--accent-warning); }
.score.rrf { color: var(--accent-success); }

.chunk-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================
   Metrics Display
   ============================================ */

#metrics, #chunk-stats {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
}

.stat, .metric {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stat strong, .metric strong {
    color: var(--text-primary);
}

/* ============================================
   Warning Banner
   ============================================ */

.warning-banner {
    background: rgba(210, 153, 34, 0.1);
    border: 1px solid var(--accent-warning);
    border-radius: var(--radius-sm);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    color: var(--accent-warning);
    font-size: 0.9rem;
}

.warning-banner.hidden {
    display: none;
}

/* ============================================
   Utility Classes
   ============================================ */

.hidden {
    display: none !important;
}

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

.mt-md {
    margin-top: var(--space-md);
}

/* ============================================
   Scrollbar Styling
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ============================================
   Animations
   ============================================ */

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

.card {
    animation: fadeIn 0.3s ease;
}

/* ============================================
   Pre/Code for copied prompts
   ============================================ */

pre {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* ============================================
   Drop Zone
   ============================================ */

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-tertiary);
    margin-bottom: var(--space-md);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent-primary);
    background: rgba(88, 166, 255, 0.05);
}

.drop-zone.drag-over {
    transform: scale(1.01);
    box-shadow: var(--shadow-glow);
}

.drop-zone-content {
    pointer-events: none;
}

.drop-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--space-sm);
}

.drop-zone p {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.drop-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ============================================
   Document Grid (Desktop Icons)
   ============================================ */

.document-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    min-height: 0;
}

.document-grid:empty {
    display: none;
}

.document-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    animation: fadeIn 0.3s ease;
}

.document-item:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    transform: translateY(-2px);
}

.document-item.processing {
    opacity: 0.6;
    pointer-events: none;
}

.document-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-xs);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.document-icon.pdf { color: #f44336; }
.document-icon.txt { color: #2196f3; }
.document-icon.md { color: #4caf50; }

.document-name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
    word-break: break-word;
    line-height: 1.3;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
}

.document-meta {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Delete Button */
.document-delete {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-error);
    color: white;
    border: 2px solid var(--bg-primary);
    font-size: 12px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
    padding: 0;
    z-index: 10; /* Ensure clickable above other elements */
}

.document-item:hover .document-delete {
    opacity: 1;
}

.document-delete:hover {
    transform: scale(1.1);
    background: #ff1744;
}

/* Ingested State - Green glow and checkmark */
.document-item.ingested {
    border-color: var(--accent-success);
    box-shadow: 0 0 8px rgba(63, 185, 80, 0.3);
}

.document-item.ingested::after {
    content: '✓';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-success);
    color: white;
    font-size: 10px;
    font-weight: 700;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-primary);
}

/* Not ingested - subtle orange/yellow border */
.document-item:not(.ingested):not(.processing) {
    border-color: rgba(210, 153, 34, 0.4);
}

.document-item:not(.ingested):not(.processing)::before {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 6px;
    height: 6px;
    background: var(--accent-warning);
    border-radius: 50%;
    opacity: 0.8;
}

/* ============================================
   Text Input Details
   ============================================ */

.text-input-details {
    margin-bottom: var(--space-md);
}

.text-input-details summary {
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: var(--space-sm) 0;
    user-select: none;
}

.text-input-details summary:hover {
    color: var(--accent-primary);
}

.text-input-details[open] summary {
    margin-bottom: var(--space-sm);
}

.text-input-details textarea {
    min-height: 100px;
    margin-bottom: var(--space-sm);
}

.text-input-details .btn-secondary {
    font-size: 0.85rem;
    padding: var(--space-xs) var(--space-md);
}

/* ============================================
   Toast Notification
   ============================================ */

.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    pointer-events: none;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    min-width: 300px;
    max-width: 500px;
    animation: slideUp 0.3s ease;
    pointer-events: auto;
}

.toast.hidden {
    display: none;
}

/* Toast state border colors */
.toast.loading {
    border-color: var(--accent-warning);
}

.toast.ready {
    border-color: var(--accent-success);
}

.toast.warning {
    border-color: var(--accent-warning);
}

.toast.error {
    border-color: var(--accent-error);
}

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

/* State indicator dot (replaces emoji icon) */
.toast-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    animation: pulse 2s infinite;
}

.toast-indicator.loading {
    background: var(--accent-warning);
}

.toast-indicator.ready {
    background: var(--accent-success);
    animation: none;
}

.toast-indicator.warning {
    background: var(--accent-warning);
    animation: none;
}

.toast-indicator.error {
    background: var(--accent-error);
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* Close button for dismissable toasts */
.toast-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
    transition: all 0.2s;
}

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

.toast-close.hidden {
    display: none;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

/* ============================================
   Modal Dialog
   ============================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    width: 90%;
    max-width: 320px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    animation: scaleIn 0.2s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.modal-message {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.5;
    font-size: 0.95rem;
}

.modal-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

.modal-actions button {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.toast-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.toast-message {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.toast-progress {
    width: 100%;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    margin-top: var(--space-sm);
    overflow: hidden;
}

.toast-progress-bar {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 2px;
    transition: width 0.2s ease;
    animation: progressPulse 1.5s ease-in-out infinite;
}

@keyframes progressPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ============================================
   Modern Document Icons (SVG-style)
   ============================================ */

.document-icon {
    width: 48px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-xs);
    position: relative;
    font-size: 0; /* Hide emoji fallback */
}

.document-icon::before {
    content: '';
    position: absolute;
    width: 40px;
    height: 52px;
    background: linear-gradient(135deg, #3a3f47 0%, #2d3139 100%);
    border-radius: 4px 12px 4px 4px;
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.document-icon::after {
    content: '';
    position: absolute;
    top: 0;
    right: 4px;
    width: 12px;
    height: 12px;
    background: linear-gradient(135deg, #4a4f57 0%, #3a3f47 100%);
    clip-path: polygon(0 0, 100% 100%, 0 100%);
    border-radius: 0 0 0 2px;
}

/* File type label */
.document-icon span {
    position: relative;
    z-index: 1;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 6px;
    border-radius: 3px;
    margin-top: 8px;
}

/* PDF Style */
.document-icon.pdf::before {
    background: linear-gradient(135deg, #dc3545 0%, #a71d2a 100%);
}

.document-icon.pdf span {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* TXT Style */
.document-icon.txt::before {
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
}

.document-icon.txt span {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* MD Style */
.document-icon.md::before {
    background: linear-gradient(135deg, #198754 0%, #146c43 100%);
}

.document-icon.md span {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* Document lines decoration */
.document-icon.txt::before,
.document-icon.md::before {
    background-image: 
        linear-gradient(transparent 60%, rgba(255,255,255,0.1) 60%, rgba(255,255,255,0.1) 65%, transparent 65%),
        linear-gradient(transparent 70%, rgba(255,255,255,0.08) 70%, rgba(255,255,255,0.08) 75%, transparent 75%),
        linear-gradient(transparent 80%, rgba(255,255,255,0.05) 80%, rgba(255,255,255,0.05) 85%, transparent 85%);
}

.document-icon.txt::before {
    background-color: #0d6efd;
}

.document-icon.md::before {
    background-color: #198754;
}

/* ============================================
   Model Selector
   ============================================ */

.model-selector-trigger {
    cursor: pointer;
    transition: color 0.2s;
    border-bottom: 1px dashed var(--text-muted);
}

.model-selector-trigger:hover {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.model-selector-modal {
    max-width: 420px;
}

.model-selector-modal .modal-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-lg);
}

.model-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.model-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.model-option:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

.model-option.active {
    border-color: var(--accent-success);
    background: rgba(63, 185, 80, 0.1);
}

.model-option.loading {
    opacity: 0.7;
    pointer-events: none;
}

.model-option-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.model-option-info {
    flex: 1;
}

.model-option-name {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.model-option-name .badge {
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: var(--accent-primary);
    color: white;
    font-weight: 500;
}

.model-option-name .badge.recommended {
    background: var(--accent-success);
}

.model-option-details {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.model-option-status {
    font-size: 0.75rem;
    color: var(--accent-success);
    display: flex;
    align-items: center;
    gap: 4px;
}

.model-option-status.loading {
    color: var(--accent-warning);
}

/* Loading spinner for model switch */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.model-option.loading .model-option-icon::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-muted);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--space-sm);
}