/* Database Studio — enterprise no-code database management */

.database-studio-section {
    height: calc(100vh - var(--topbar-height, 56px));
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    padding: 0;
    width: 100%;
    max-width: 100%;
}

/* Knowledge module header tabs */
.knowledge-module-header {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.knowledge-module-tab {
    padding: 0.875rem 1.25rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color 0.15s, border-color 0.15s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.knowledge-module-tab.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-600);
}

/* Page shell */
.ds-page {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.ds-page-header {
    padding: 1rem 1.5rem 0.75rem;
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
}

.ds-page-header-left {
    min-width: 0;
    flex: 1;
}

/* Data refresh status (MT4 / MT5 / Oanda) */
.ds-refresh-status {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 0;
}

.ds-refresh-status-loading {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.ds-refresh-status-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0 0.125rem;
}

.ds-refresh-status-title {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.375rem;
    white-space: nowrap;
}

.ds-refresh-status-title i {
    color: var(--primary-500, #3b82f6);
    font-size: 0.75rem;
}

.ds-refresh-status-refresh-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    font-size: 0.75rem;
    line-height: 1;
    transition: color 0.15s, background 0.15s;
}

.ds-refresh-status-refresh-btn:hover {
    color: var(--primary-500, #3b82f6);
    background: rgba(59, 130, 246, 0.1);
}

.ds-refresh-status-refresh-btn.spinning i {
    animation: ds-spin 0.8s linear infinite;
}

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

.ds-refresh-source-list {
    display: flex;
    flex-direction: row;
    gap: 0.625rem;
}

.ds-refresh-source-card {
    flex: 1;
    min-width: 108px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.625rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.ds-refresh-source-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.ds-refresh-source-name {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.ds-refresh-source-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.ds-refresh-source-dot.success { background: #22c55e; }
.ds-refresh-source-dot.warning { background: #f59e0b; }
.ds-refresh-source-dot.error { background: #ef4444; }

.ds-refresh-source-size {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.ds-refresh-source-time {
    font-size: 0.625rem;
    line-height: 1.35;
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .ds-page-header {
        flex-direction: column;
    }

    .ds-refresh-status {
        width: 100%;
    }

    .ds-refresh-source-list {
        flex-wrap: wrap;
    }

    .ds-refresh-source-card {
        flex: 1 1 calc(33.333% - 0.5rem);
        min-width: 100px;
    }
}

.ds-page-title {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.ds-page-subtitle {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Overview cards */
.ds-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    padding: 0 1.5rem 1rem;
    flex-shrink: 0;
}

.ds-overview-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.875rem 1rem;
}

.ds-overview-card.primary {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-900) 100%);
    border-color: transparent;
    color: #fff;
}

.ds-overview-card.primary .ds-overview-label {
    color: rgba(255, 255, 255, 0.75);
}

.ds-overview-label {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

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

.ds-overview-card.primary .ds-overview-value {
    color: #fff;
    font-size: 1.125rem;
}

.ds-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.625rem;
    border-radius: 999px;
    margin-top: 0.5rem;
}

.ds-status-badge.connected {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.ds-status-badge.warning {
    background: rgba(234, 179, 8, 0.15);
    color: #eab308;
}

.ds-status-badge.error {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.ds-status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* Two-column layout */
.ds-workspace {
    display: grid;
    grid-template-columns: 240px 1fr;
    flex: 1;
    min-height: 0;
    border-top: 1px solid var(--border-color);
}

.ds-sidebar {
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
    background: var(--bg-secondary);
}

.ds-sidebar-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.ds-sidebar-header {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.ds-sidebar-search {
    position: relative;
}

.ds-sidebar-search i {
    position: absolute;
    left: 0.625rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.ds-sidebar-search input {
    width: 100%;
    padding: 0.5rem 0.625rem 0.5rem 1.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.8125rem;
}

.ds-sidebar-section {
    padding: 0.5rem 0.75rem 0.25rem;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 600;
}

.ds-table-list {
    padding: 0 0.5rem 0.5rem;
}

.ds-table-list--compact {
    max-height: 100px;
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
}

.ds-table-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.625rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8125rem;
    color: var(--text-primary);
    transition: background 0.12s;
}

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

.ds-table-item.active {
    background: var(--primary-100);
    color: var(--primary-700);
}

[data-theme="dark"] .ds-table-item.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-400);
}

.ds-table-item .ds-table-meta {
    margin-left: auto;
    font-size: 0.6875rem;
    color: var(--text-secondary);
}

.ds-favorite-btn {
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.125rem;
    font-size: 0.6875rem;
    opacity: 0;
    transition: opacity 0.12s, color 0.12s;
}

.ds-table-item:hover .ds-favorite-btn,
.ds-favorite-btn.favorited {
    opacity: 1;
}

.ds-favorite-btn.favorited {
    color: #eab308;
}

.ds-sidebar-footer {
    padding: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.ds-create-table-btn {
    width: 100%;
    padding: 0.5rem;
    border: 1px dashed var(--border-color);
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    transition: border-color 0.15s, color 0.15s;
}

.ds-create-table-btn:hover {
    border-color: var(--primary-500);
    color: var(--primary-600);
}

/* Main workspace */
.ds-main {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.ds-main-toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.ds-workspace-tabs {
    display: flex;
    gap: 0.25rem;
    margin-right: auto;
}

.ds-workspace-tab {
    padding: 0.375rem 0.75rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.12s, color 0.12s;
}

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

.ds-workspace-tab.active {
    background: var(--primary-100);
    color: var(--primary-700);
}

[data-theme="dark"] .ds-workspace-tab.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-400);
}

.ds-toolbar-actions {
    display: flex;
    gap: 0.375rem;
    align-items: center;
}

.ds-toolbar-btn {
    padding: 0.375rem 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    transition: background 0.12s;
}

.ds-toolbar-btn:hover {
    background: var(--bg-hover);
}

.ds-toolbar-btn.primary {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: #fff;
}

.ds-toolbar-btn.danger {
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}

.ds-global-search {
    position: relative;
    min-width: 180px;
}

.ds-global-search input {
    width: 100%;
    padding: 0.375rem 0.625rem 0.375rem 1.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.75rem;
}

.ds-global-search i {
    position: absolute;
    left: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.6875rem;
    color: var(--text-secondary);
}

.ds-role-select {
    padding: 0.375rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.75rem;
}

/* Data grid */
.ds-content {
    flex: 1;
    min-height: 0;
    overflow: auto;
    position: relative;
}

.ds-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    gap: 0.75rem;
    padding: 2rem;
    text-align: center;
}

.ds-empty-state i {
    font-size: 2.5rem;
    opacity: 0.4;
}

.ds-grid-wrapper {
    min-height: 0;
}

.ds-grid {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.8125rem;
}

.ds-grid thead {
    position: sticky;
    top: 0;
    z-index: 2;
}

.ds-grid th {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    user-select: none;
}

.ds-grid th.ds-row-select-col,
.ds-grid td.ds-row-select-col {
    width: 36px;
    text-align: center;
    padding: 0.375rem;
}

.ds-grid td {
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    padding: 0;
    max-width: 280px;
}

.ds-grid tr:hover td {
    background: var(--bg-hover);
}

.ds-grid tr.selected td {
    background: rgba(99, 102, 241, 0.08);
}

.ds-cell-input {
    width: 100%;
    border: none;
    background: transparent;
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    font-size: 0.8125rem;
    font-family: inherit;
    min-height: 36px;
}

.ds-cell-input:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: -2px;
    background: var(--bg-primary);
}

.ds-cell-readonly {
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Pagination */
.ds-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.ds-pagination-btns {
    display: flex;
    gap: 0.25rem;
}

.ds-pagination-btns button {
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.75rem;
}

.ds-pagination-btns button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Schema view */
.ds-schema-view {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
}

.ds-schema-table-wrapper {
    flex: 1;
    min-height: 0;
    overflow: auto;
}

.ds-schema-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.ds-schema-table th,
.ds-schema-table td {
    padding: 0.625rem 1rem;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.ds-schema-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
}

.ds-schema-badge {
    display: inline-block;
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 500;
}

.ds-schema-badge.pk { background: rgba(99, 102, 241, 0.15); color: var(--primary-600); }
.ds-schema-badge.fk { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.ds-schema-badge.idx { background: rgba(234, 179, 8, 0.15); color: #eab308; }

/* Relationships diagram */
.ds-relationships {
    padding: 1.5rem;
    overflow: auto;
    height: 100%;
}

.ds-rel-tree {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.ds-rel-node {
    padding: 0.25rem 0;
}

.ds-rel-node.table-name {
    font-weight: 600;
    color: var(--primary-600);
}

.ds-rel-connector {
    color: var(--text-secondary);
    padding-left: 1rem;
}

/* Analytics */
.ds-analytics {
    padding: 1rem;
    overflow: auto;
    height: 100%;
}

.ds-analytics-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.ds-metric-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.875rem;
    text-align: center;
}

.ds-metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.ds-metric-label {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-top: 0.25rem;
}

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

.ds-chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
}

.ds-chart-card h4 {
    margin: 0 0 0.75rem;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.ds-chart-canvas {
    height: 200px;
    position: relative;
}

/* Drawer header (activity log, etc.) */
.ds-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.ds-drawer-header h3 {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Filters panel */
.ds-filters-panel {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: none;
}

.ds-filters-panel.open {
    display: block;
}

.ds-filter-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.ds-filter-row select,
.ds-filter-row input {
    padding: 0.375rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.75rem;
}

/* Modals (rendered on document.body — use apple tokens, not undefined --bg-primary) */
.ds-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100000;
    padding: 1rem;
    overflow-y: auto;
}

.ds-modal {
    background-color: #ffffff;
    color: #1d1d1f;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 12px;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
    margin: auto;
    isolation: isolate;
}

[data-theme="dark"] .ds-modal {
    background-color: #15151b;
    color: #f5f5f7;
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.65);
}

.ds-modal-wide {
    max-width: min(920px, 96vw);
}

.ds-modal-form {
    display: flex;
    flex-direction: column;
    max-height: min(90vh, 800px);
    overflow: hidden;
}

.ds-modal-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #ffffff;
    border-radius: 12px 12px 0 0;
}

[data-theme="dark"] .ds-modal-header {
    background-color: #15151b;
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.ds-modal-header h3 {
    margin: 0;
    font-size: 1rem;
    color: inherit;
}

.ds-modal-body {
    padding: 1.25rem;
    background-color: #ffffff;
}

[data-theme="dark"] .ds-modal-body {
    background-color: #15151b;
}

.ds-modal-form .ds-modal-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.ds-modal-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    flex-wrap: wrap;
    background-color: #ffffff;
    border-radius: 0 0 12px 12px;
}

[data-theme="dark"] .ds-modal-footer {
    background-color: #15151b;
    border-top-color: rgba(255, 255, 255, 0.1);
}

.ds-modal-form .ds-modal-header,
.ds-modal-form .ds-modal-footer {
    flex-shrink: 0;
}

.ds-modal-overlay .form-input,
.ds-modal-overlay .ds-formula-textarea,
.ds-modal-overlay select.form-input {
    background-color: #f5f5f7;
    color: #1d1d1f;
    border: 1px solid rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] .ds-modal-overlay .form-input,
[data-theme="dark"] .ds-modal-overlay .ds-formula-textarea,
[data-theme="dark"] .ds-modal-overlay select.form-input {
    background-color: #1c1c1e;
    color: #f5f5f7;
    border-color: rgba(255, 255, 255, 0.12);
}

.ds-modal-overlay .form-label {
    color: inherit;
}

.ds-modal-subtitle {
    font-size: 0.75rem;
    color: #6e6e73;
    margin: 0 0 1rem;
    line-height: 1.4;
}

[data-theme="dark"] .ds-modal-subtitle {
    color: #86868b;
}

.ds-modal-form .form-group {
    margin-bottom: 0.875rem;
}

.ds-checkbox-label {
    font-size: 0.8125rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.4;
    color: inherit;
}

/* Formula builder */
.ds-formula-builder {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 0.75rem;
    align-items: stretch;
}

.ds-formula-builder-editor {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 0;
}

.ds-formula-textarea {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 0.8125rem;
    resize: vertical;
    min-height: 100px;
}

.ds-formula-operators {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.375rem;
}

.ds-formula-operators-label {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    font-weight: 600;
    margin-right: 0.25rem;
}

.ds-formula-op {
    padding: 0.25rem 0.5rem;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 4px;
    background-color: #f5f5f7;
    color: #1d1d1f;
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    cursor: pointer;
}

[data-theme="dark"] .ds-formula-op {
    background-color: #1c1c1e;
    color: #f5f5f7;
    border-color: rgba(255, 255, 255, 0.12);
}

.ds-formula-op:hover {
    background: var(--bg-hover);
    border-color: var(--primary-500);
}

.ds-column-picker {
    display: flex;
    flex-direction: column;
    min-height: 0;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 8px;
    background-color: #f5f5f7;
    overflow: hidden;
}

[data-theme="dark"] .ds-column-picker {
    background-color: #1c1c1e;
    border-color: rgba(255, 255, 255, 0.1);
}

.ds-column-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.625rem;
    border-bottom: 1px solid var(--border-color);
}

.ds-column-picker-count {
    font-size: 0.6875rem;
    color: #6e6e73;
    background-color: #ffffff;
    padding: 0.125rem 0.375rem;
    border-radius: 999px;
}

[data-theme="dark"] .ds-column-picker-count {
    color: #86868b;
    background-color: #15151b;
}

.ds-column-picker-search {
    position: relative;
    padding: 0.5rem 0.625rem;
    border-bottom: 1px solid var(--border-color);
}

.ds-column-picker-search i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.6875rem;
    color: var(--text-secondary);
    pointer-events: none;
}

.ds-column-picker-search input {
    width: 100%;
    padding: 0.375rem 0.5rem 0.375rem 1.5rem;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 4px;
    background-color: #ffffff;
    color: #1d1d1f;
    font-size: 0.75rem;
}

[data-theme="dark"] .ds-column-picker-search input {
    background-color: #15151b;
    color: #f5f5f7;
    border-color: rgba(255, 255, 255, 0.12);
}

.ds-column-picker-list {
    flex: 1;
    min-height: 140px;
    max-height: 220px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.375rem;
}

.ds-column-picker-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    width: 100%;
    padding: 0.375rem 0.5rem;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.75rem;
    text-align: left;
    cursor: pointer;
}

.ds-column-picker-item:hover {
    background: var(--bg-hover);
}

.ds-column-picker-name {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ds-column-picker-type {
    flex-shrink: 0;
    font-size: 0.625rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.ds-column-picker-empty {
    padding: 1rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.ds-column-picker-hint {
    margin: 0;
    padding: 0.375rem 0.625rem;
    font-size: 0.625rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    line-height: 1.3;
}

.ds-col-preview {
    margin-top: 0.75rem;
}

.ds-col-preview .ds-migration-sql {
    max-height: 100px;
}

@media (max-width: 720px) {
    .ds-formula-builder {
        grid-template-columns: 1fr;
    }

    .ds-column-picker-list {
        max-height: 160px;
    }
}

.ds-modal:not(.ds-modal-form) {
    overflow-y: auto;
}

.ds-migration-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.ds-migration-label {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}

.ds-migration-steps {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 40vh;
    overflow-y: auto;
}

.ds-migration-step-title {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
}

.ds-migration-sql {
    background: #1e293b;
    color: #e2e8f0;
    padding: 0.75rem;
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
    overflow-x: auto;
}

.ds-impact-list {
    margin: 0.75rem 0;
    padding: 0.75rem;
    background: rgba(239, 68, 68, 0.08);
    border-radius: 8px;
    font-size: 0.8125rem;
}

/* Activity log drawer */
.ds-activity-drawer {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 300px;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    z-index: 5;
    display: none;
    flex-direction: column;
}

.ds-activity-drawer.open {
    display: flex;
}

.ds-activity-item {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.75rem;
}

.ds-activity-item .ds-activity-user {
    font-weight: 600;
    color: var(--text-primary);
}

.ds-activity-item .ds-activity-time {
    color: var(--text-secondary);
    font-size: 0.6875rem;
}

/* Placeholder knowledge pages */
.knowledge-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100vh - var(--topbar-height, 56px) - 48px);
    color: var(--text-secondary);
    gap: 1rem;
    padding: 2rem;
    text-align: center;
}

.knowledge-placeholder i {
    font-size: 3rem;
    opacity: 0.35;
}

/* Responsive */
@media (max-width: 1200px) {
    .ds-workspace {
        grid-template-columns: 200px 1fr;
    }
}

@media (max-width: 992px) {
    .ds-workspace {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }

    .ds-sidebar {
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .ds-activity-drawer {
        right: 0;
        width: 100%;
    }
}