/* ==========================================================================
   Knowledge Base Page Styles
   ========================================================================== */

/* Page Header */
.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-header-content {
    max-width: 600px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.page-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* KB Documents Layout - Single Column with Collapsible Sections */
.kb-documents-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Collapsible Sections */
.kb-section.collapsible {
    transition: margin var(--transition-normal);
}

.kb-section.collapsible .collapsible-header {
    cursor: pointer;
    user-select: none;
}

.kb-section.collapsible .collapsible-header:hover {
    background-color: var(--color-bg-hover);
}

.kb-section.collapsible .card-header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.kb-section.collapsible .toggle-icon {
    transition: transform var(--transition-normal);
}

.kb-section.collapsible:not(.open) .toggle-icon {
    transform: rotate(-90deg);
}

.kb-section.collapsible .collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
    padding: 0 var(--spacing-lg);
}

.kb-section.collapsible.open .collapsible-content {
    max-height: 2000px;
    padding: var(--spacing-lg);
}

/* Documents Scrollable Container */
.documents-scrollable {
    max-height: 300px;
    overflow-y: auto;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) var(--color-bg-tertiary);
}

.documents-scrollable::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.documents-scrollable::-webkit-scrollbar-track {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
}

.documents-scrollable::-webkit-scrollbar-thumb {
    background-color: var(--color-border);
    border-radius: var(--radius-sm);
}

.documents-scrollable::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text-muted);
}

/* KB Layout - Two Columns (legacy, kept for compatibility) */
.kb-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (max-width: 1200px) {
    .kb-layout {
        grid-template-columns: 1fr;
    }
}

/* Cards */
.card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

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

.card-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.card-title i {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

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

.card-body {
    padding: var(--spacing-lg);
}

/* Form Styles */
.upload-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-weight: 500;
    color: var(--color-text-primary);
}

.form-label .required {
    color: var(--color-critical);
}

.form-select,
.form-input,
.form-textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-select-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8125rem;
}

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

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

/* Client Info Display */
.client-info {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
}

.client-info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.client-info-item i {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
}

/* File Upload Area */
.file-upload-area {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.file-upload-area:hover,
.file-upload-area.dragover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-upload-content {
    pointer-events: none;
}

.file-upload-icon {
    width: 48px;
    height: 48px;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.file-upload-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.file-upload-link {
    color: var(--color-primary);
    font-weight: 500;
}

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

/* File Preview */
.file-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.file-preview-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.file-preview-info {
    flex: 1;
    text-align: left;
}

.file-preview-name {
    display: block;
    font-weight: 500;
    color: var(--color-text-primary);
}

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

.file-remove-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background-color: transparent;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-remove-btn:hover {
    background-color: var(--color-critical-light);
    color: var(--color-critical);
}

/* Form Actions */
.form-actions {
    margin-top: var(--spacing-md);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* Upload Progress */
.upload-progress {
    padding: var(--spacing-lg);
    text-align: center;
}

.progress-bar {
    height: 8px;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-fill {
    height: 100%;
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
    width: 0%;
}

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

/* Documents Filters */
.documents-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.documents-filters .form-select {
    flex: 1;
}

/* Documents Table */
.documents-table-container {
    overflow-x: auto;
    min-height: 300px;
}

.documents-table {
    width: 100%;
    border-collapse: collapse;
}

.documents-table th,
.documents-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.documents-table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--color-text-muted);
    background-color: var(--color-bg-tertiary);
}

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

.doc-title-cell {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.doc-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.doc-icon i {
    width: 18px;
    height: 18px;
}

.doc-info {
    flex: 1;
}

.doc-name {
    font-weight: 500;
    color: var(--color-text-primary);
    display: block;
}

.doc-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: block;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-type-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

.doc-type-badge.functional {
    background-color: #dbeafe;
    color: #2563eb;
}

.doc-type-badge.technical {
    background-color: #ede9fe;
    color: #7c3aed;
}

.doc-type-badge.runbook {
    background-color: #d1fae5;
    color: #059669;
}

.doc-type-badge.architecture {
    background-color: #fef3c7;
    color: #d97706;
}

[data-theme="dark"] .doc-type-badge.functional {
    background-color: #1e3a5f;
}

[data-theme="dark"] .doc-type-badge.technical {
    background-color: #312e81;
}

[data-theme="dark"] .doc-type-badge.runbook {
    background-color: #064e3b;
}

[data-theme="dark"] .doc-type-badge.architecture {
    background-color: #78350f;
}

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8125rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-muted);
}

.empty-state i {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
}

.empty-state h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

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

/* Loading State */
.loading-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

/* Documents Stats */
.documents-stats {
    display: flex;
    gap: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

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

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 1000;
    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-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--color-primary);
    animation: slideIn 0.3s ease;
    max-width: 400px;
}

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

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

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

.toast-icon {
    width: 20px;
    height: 20px;
}

.toast.success .toast-icon {
    color: var(--color-success);
}

.toast.error .toast-icon {
    color: var(--color-critical);
}

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

.toast-message {
    flex: 1;
    font-size: 0.875rem;
}

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

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1001;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active,
.modal.show {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

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

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

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

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

/* Detail Items */
.detail-item {
    margin-bottom: var(--spacing-lg);
}

.detail-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.detail-value {
    color: var(--color-text-primary);
}

.detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

/* Chunks Preview */
.chunks-preview {
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.chunk-item {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.chunk-item:last-child {
    border-bottom: none;
}

.chunk-section {
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.chunk-content {
    font-family: var(--font-mono);
    white-space: pre-wrap;
    word-break: break-word;
}

/* ==========================================================================
   Tabs
   ========================================================================== */

.page-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: -1px;
}

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

.tab-btn.active {
    color: #ffffff;
    border-bottom-color: var(--color-primary);
    background: var(--color-primary);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.tab-btn i {
    width: 18px;
    height: 18px;
    color: inherit;
}

.tab-btn.active i {
    color: #ffffff;
}

.tab-content {
    display: none;
    padding-top: var(--spacing-xl);
}

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

/* ==========================================================================
   Clients Section
   ========================================================================== */

.clients-layout {
    max-width: 1200px;
}

.clients-table-container {
    overflow-x: auto;
}

.clients-table {
    width: 100%;
    border-collapse: collapse;
}

.clients-table th,
.clients-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.clients-table th {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.client-id-cell {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-primary);
}

.client-name-cell {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.client-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.client-icon i {
    width: 16px;
    height: 16px;
    color: white;
}

.client-name-text {
    font-weight: 500;
}

.client-desc {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.client-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.client-status.active {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.client-status.inactive {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

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

.client-actions .btn {
    padding: 6px 10px;
}

/* Modal Footer with Danger Buttons */
.modal-footer-danger {
    display: flex;
    gap: var(--spacing-sm);
    margin-right: auto;
}

.btn-warning {
    background-color: #f59e0b;
    color: white;
    border: none;
}

.btn-warning:hover {
    background-color: #d97706;
}

/* ==========================================================================
   Modal Large
   ========================================================================== */

.modal-large {
    max-width: 700px;
}

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

.form-group-full {
    grid-column: 1 / -1;
}

.form-color {
    height: 40px;
    padding: 4px;
    cursor: pointer;
}

/* Cloud Fields */
.cloud-fields {
    display: contents;
}

.cloud-fields.hidden {
    display: none;
}

/* Form Section Titles */
.form-section-title {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.form-section-title h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin: 0;
}

.form-section-title h4 i {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group-full {
        grid-column: auto;
    }
}