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

:root {
    --primary-dark: #1B1534;
    --primary-color: #8a00e5;
    --primary-hover: #9b26e9;
    --primary-light: rgba(138, 0, 229, 0.1);
    --primary-medium: rgba(138, 0, 229, 0.2);
   
    --secondary-color: #64748b;
    --background: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --success: #28a745;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
   
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
   
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
   
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
   
    --transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--primary-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.header {
    background: var(--primary-dark);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.header-content {
    max-width: 1920px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-image {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

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

.user-name {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    font-weight: 500;
}

.main-container {
    display: grid;
    grid-template-columns: 280px 240px 1fr;
    max-width: 1920px;
    margin: 0 auto;
    min-height: calc(100vh - 65px);
    gap: 0;
    position: relative;
    padding-left: 60px;
    transition: padding-left 0.3s ease;
    background-color: var(--background);
}

.nav-sidebar.expanded ~ .main-container {
    padding-left: 220px;
}

.document-sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    overflow: hidden;
    height: calc(100vh - 65px);
    position: sticky;
    top: 65px;
    display: flex;
    flex-direction: column;
    z-index: 1;
}

.document-sidebar .sidebar-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    height: 100%;
    overflow: hidden;
}

.sidebar h3,
.document-sidebar h3 {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.upload-section {
    flex-shrink: 0;
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--background);
}

.upload-zone:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.upload-zone.dragging {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.upload-zone p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.upload-hint {
    font-size: 0.65rem;
    line-height: 1.2;
    color: var(--text-secondary);
}

.search-section {
    margin-bottom: var(--spacing-xs);
    flex-shrink: 0;
}

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

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(138, 0, 229, 0.2);
}

.documents-section {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.documents-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}


.chat-history-sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 65px;
    height: calc(100vh - 65px);
    overflow: hidden;
}

.chat-history-header {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--background);
    flex-shrink: 0;
}

.chat-history-header h3 {
    margin: 0;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.new-chat-btn {
    padding: 6px 10px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    transition: var(--transition);
}

.new-chat-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.chat-history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.chat-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition);
}

.chat-item {
    position: relative;
}

.chat-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.chat-item.active {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.delete-chat-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 20px;
    height: 20px;
    border: none;
    background: none;
    color: #999;
    border-radius: 50%;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: var(--transition);
}

.delete-chat-btn:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.chat-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.chat-badge {
    display: inline-block;
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 500;
    background: var(--primary-light);
    color: var(--primary-color);
}

.document-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.document-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.document-item.selected {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.document-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--background);
}

.document-item.uploading,
.document-item.processing {
    opacity: 0.7;
    cursor: wait;
}

.document-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.document-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.document-status {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.status-pending {
    background: #fef3c7;
    color: #92400e;
}

.status-processing {
    background: #dbeafe;
    color: #1e40af;
}

.status-finished {
    background: #d1fae5;
    color: #065f46;
}

.status-error {
    background: #fee2e2;
    color: #991b1b;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: var(--spacing-lg);
}

.document-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.content-area {
    background: var(--background);
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.function-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: nowrap;    
    overflow-x: auto;      
}


.tab-button {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.tab-button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tab-button.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.new-chat-button {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-color);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    margin-left: auto;
}

.new-chat-button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.function-content {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.function-panel {
    display: none;
}

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

.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: var(--background);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: var(--transition);
}

.drop-zone.drag-over {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.drop-zone p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.dropped-documents {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.dropped-doc {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.dropped-doc .remove-doc {
    cursor: pointer;
    color: #999;
    font-weight: bold;
    transition: var(--transition);
}

.dropped-doc .remove-doc:hover {
    color: var(--error);
}


.delete-doc {
    color: #999;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.delete-doc:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

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

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

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

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.form-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

.form-group input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

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

.btn-primary {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

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

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

.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-icon {
    padding: var(--spacing-sm) var(--spacing-md);
}

.output-panel {
    border-top: 1px solid var(--border);
    padding-top: var(--spacing-lg);
}

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

.output-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.output-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.output-content {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    min-height: 200px;
    max-height: 500px;
    overflow-y: auto;
    font-size: 0.875rem;
    line-height: 1.6;
}

.output-placeholder {
    color: var(--text-secondary);
    text-align: center;
}

.output-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    color: var(--text-secondary);
}

.output-loading .loading-dots {
    display: inline-flex;
    gap: 0.25rem;
}

.output-loading .loading-dots span {
    width: 6px;
    height: 6px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: pulse 1.4s infinite ease-in-out;
}

.output-loading .loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.output-loading .loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes pulse {
    0%, 80%, 100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    40% {
        opacity: 1;
        transform: scale(1);
    }
}

.output-image {
    max-width: 512px;
    max-height: 512px;
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.output-video {
    max-width: 512px;
    max-height: 512px;
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

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

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.notification {
    position: fixed;
    top: 80px;
    right: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
    min-width: 300px;
    max-width: 400px;
}

.notification.show {
    transform: translateX(0);
}

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

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

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

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

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.markdown-content h1 { font-size: 2em; }
.markdown-content h2 { font-size: 1.5em; }
.markdown-content h3 { font-size: 1.25em; }

.markdown-content p {
    margin: 0.5rem 0;
    line-height: 1.6;
}

.markdown-content ul,
.markdown-content ol {
    margin: 0.5rem 0;
    padding-left: 2rem;
}

.markdown-content li {
    margin: 0.25rem 0;
}

.markdown-content code {
    background: var(--bg-secondary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.markdown-content pre {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.markdown-content pre code {
    background: none;
    padding: 0;
}

.markdown-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-secondary);
}

.markdown-content a {
    color: var(--primary);
    text-decoration: none;
}

.markdown-content a:hover {
    text-decoration: underline;
}

.markdown-content strong {
    font-weight: 600;
}

.markdown-content em {
    font-style: italic;
}

.markdown-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
}

.markdown-content th,
.markdown-content td {
    border: 1px solid var(--border);
    padding: 0.5rem;
    text-align: left;
}

.markdown-content th {
    background: var(--bg-secondary);
    font-weight: 600;
}

@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 280px 1fr;
    }
   
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-container {
        grid-template-columns: 1fr;
    }
   
    .sidebar {
        position: relative;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
   
    .function-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
   
    .content-area {
        padding: var(--spacing-md);
    }
   
    .function-content {
        padding: var(--spacing-md);
    }
}

.chat-settings-bar {
    padding: var(--spacing-md);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.chat-settings-bar .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin: 0;
}

.chat-settings-bar .form-group {
    margin: 0;
}

.chat-settings-bar label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.chat-settings-bar select,
.chat-settings-bar input {
    font-size: 0.875rem;
    padding: 0.5rem;
}


.chat-messages-container {
    background: var(--background);     
    border: 1px solid var(--border);    
    border-radius: var(--radius-md);  
    padding: var(--spacing-lg);         
    margin-top: var(--spacing-lg);   
    box-shadow: none;                  
}




.chat-messages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.chat-placeholder {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: var(--spacing-xl);
}

.chat-message {
    display: flex;
    flex-direction: column;
    max-width: 80%;
    animation: slideIn 0.2s ease-out;
}

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

.chat-message.user {
    align-self: flex-end;
}

.chat-message.assistant {
    align-self: flex-start;
}

.chat-message-role {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
}

.chat-message.user .chat-message-role {
    text-align: right;
}

.chat-message-content {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    word-wrap: break-word;
}

.chat-message.user .chat-message-content {
    background: var(--primary-color);
    color: white;
    border-bottom-right-radius: 0.25rem;
}

.chat-message.assistant .chat-message-content {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-bottom-left-radius: 0.25rem;
    box-shadow: var(--shadow-sm);
}

.chat-message.assistant .chat-message-content .markdown-content {
    color: var(--text-primary);
}

.chat-message.assistant .chat-message-content .markdown-content h1,
.chat-message.assistant .chat-message-content .markdown-content h2,
.chat-message.assistant .chat-message-content .markdown-content h3 {
    color: var(--text-primary);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.chat-message.assistant .chat-message-content .markdown-content code {
    background: var(--background);
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
}

.chat-message.assistant .chat-message-content .markdown-content pre {
    background: var(--background);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-sm) 0;
}

.chat-message.assistant .chat-message-content .markdown-content ul,
.chat-message.assistant .chat-message-content .markdown-content ol {
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}


.chat-info-hint{
    padding: var(--spacing-sm) var(--spacing-md);
    background: #e8f4fd;
    border-top: 1px solid var(--border);
    color: #0369a1;
    font-size: 0.875;
    text-align: center;
}


.chat-input-area {
    padding: var(--spacing-md);
    background: var(--surface);
    border-top: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.chat-input-area textarea {
    flex: 1;
    resize: vertical;
    min-height: 80px;
    max-height: 200px;
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9375rem;
    line-height: 1.5;
    transition: var(--transition);
}

.chat-input-area textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.chat-input-area textarea::placeholder {
    color: var(--text-secondary);
}

.btn-send {
    min-width: 80px;
    max-width: 100px;
    padding: var(--spacing-sm) var(--spacing-md);
    white-space: nowrap;
    align-self: flex-end;
    height: fit-content;
}

.chat-loading {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    border-bottom-left-radius: 0.25rem;
    max-width: 80%;
    align-self: flex-start;
}

.chat-loading-text {
    color: var(--text-secondary);
    font-style: italic;
}

#panel-ask {
    flex-direction: column;
    height: 100%;
}

#panel-ask.active {
    display: flex;
}



.hamburger-btn {
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  margin-right: var(--spacing-md);
}

.sidebar-bottom {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding-bottom: var(--spacing-md);
}
.sidebar-separator {
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}


.nav-sidebar {
  background: var(--primary-dark);
  color: white;
  transition: width 0.3s ease;
  overflow: hidden;
  position: fixed;
  top: 65px;
  left: 0;
  height: calc(100vh - 65px);
  z-index: 90;
}

.nav-sidebar.collapsed {
  width: 60px;
}

.nav-sidebar.expanded {
  width: 220px;
}

.nav-sidebar.expanded .icon-title {
  display: inline;
  white-space: nowrap;
}


.nav-sidebar .sidebar-content {
  padding: 0;
  gap: 0;
}

.sidebar-icons {
  list-style: none;
  padding: var(--spacing-md);
  margin: 0;
}

.sidebar-icons li {
  margin-bottom: var(--spacing-md);
}

.sidebar-icon-image {
  width: 20px;
  height: 20px;
  filter: invert(1);
  flex-shrink: 0;
}

.icon-link {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-sm);
  color: white;
  text-decoration: none;
  font-size: 1rem;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
  white-space: nowrap;
}

.icon-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.icon-link.active {
  background-color: rgba(255, 255, 255, 0.2);
  font-weight: bold;
}

.nav-sidebar.collapsed .icon-link {
  justify-content: center;
}

.icon-title {
  display: none;
}

.nav-sidebar.expanded .icon-title {
  display: inline;
}


.sources-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.sources-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.source-item {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    padding: 8px 12px;
    font-size: 0.9em;
    border-radius: var(--radius-sm);
    background: var(--background);
    border: 1px solid var(--border);
}

.source-file {
    font-weight: 500;
    color: var(--text-primary);
}

.source-page {
    color: var(--primary-color);
    font-weight: 500;
}

.source-score {
    color: var(--text-secondary);
    font-size: 0.85em;
    margin-left: auto;
}


.clickable-source {
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.clickable-source .source-file,
.clickable-source .source-page {
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 3px;
}

.clickable-source:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.clickable-source:hover .source-file,
.clickable-source:hover .source-page {
    text-decoration-style: solid;
    color: var(--primary-color);
}





.thumbnail-preview {
    position: fixed;
    z-index: 9999;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    max-width: 300px;
    max-height: 400px;
    background: var(--surface);
    padding: 8px;
    border: 1px solid var(--border);
    animation: thumbnailFadeIn 0.2s ease;
}

@keyframes thumbnailFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.thumbnail-preview img {
    max-width: 100%;
    max-height: 380px;
    border-radius: var(--radius-md);
    display: block;
}


.source-page-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: modalFadeIn 0.2s ease;
}

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

.source-page-modal-content {
    background: var(--surface);
    border-radius: var(--radius-lg);
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    animation: modalSlideIn 0.3s ease;
}

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

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

.source-page-modal-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.source-page-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.source-page-modal-close:hover {
    background: var(--error);
    color: white;
}

.source-page-modal-body {
    padding: 1.5rem;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.source-page-modal-body img {
    max-width: 100%;
    max-height: 75vh;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.source-page-loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}


.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: none;
}
.modal-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
}
.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid #ddd;
}
.close-modal {
    background: none;
    border: none;
    font-size: 32px;
    color: #dc3545;
    cursor: pointer;
    transition: all 0.2s ease;
}
.close-modal:hover {
    color: #ff0000;
    transform: scale(1.1);
}
.help-feedback-content {
    width: 600px;
    max-width: 90vw;
    height: auto;
    max-height: 80vh;
}
.help-feedback-body {
    padding: 20px;
    overflow-y: auto;
}



.feedback-form textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd; 
    border-radius: 0.5rem; 
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: all 0.2s ease;
    background: #ffffff;
}

.feedback-form textarea:focus {
    outline: none;
    border-color: #8a00e5; 
    box-shadow: 0 0 0 3px rgba(138, 0, 229, 0.1);
}