/* ═══════════════════════════════════════════════════════════════════════════
   DB Browser Online — Styles
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── CSS Variables / Theme ────────────────────────────────────────────── */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

    --transition: 0.2s ease;
    --sidebar-width: 280px;
    --topbar-height: 52px;
}

[data-theme="light"] {
    --bg-primary: #f8f9fb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f3f5;
    --bg-hover: #e9ecef;
    --bg-active: #dde1e6;
    --bg-sidebar: #ffffff;
    --bg-topbar: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f8f9fb;
    --bg-code: #f4f5f7;
    --bg-tooltip: #1a1a2e;
    --bg-overlay: rgba(0,0,0,0.4);
    --bg-selected-row: #e8f0fe;
    --bg-stripe: #fafbfc;

    --border-color: #e2e5e9;
    --border-light: #edf0f3;
    --border-focus: #4a7dff;

    --text-primary: #1a1a2e;
    --text-secondary: #5a6070;
    --text-tertiary: #8a90a0;
    --text-inverse: #ffffff;
    --text-link: #4a7dff;

    --accent: #4a7dff;
    --accent-hover: #3a6af0;
    --accent-light: #e8f0fe;
    --success: #22c55e;
    --success-light: #dcfce7;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;

    --scrollbar-thumb: #c4c8cf;
    --scrollbar-track: transparent;
}

[data-theme="dark"] {
    --bg-primary: #0f1117;
    --bg-secondary: #181a20;
    --bg-tertiary: #1e2028;
    --bg-hover: #262830;
    --bg-active: #2e3038;
    --bg-sidebar: #14161c;
    --bg-topbar: #14161c;
    --bg-card: #1a1c24;
    --bg-input: #1e2028;
    --bg-code: #1a1c24;
    --bg-tooltip: #2e3038;
    --bg-overlay: rgba(0,0,0,0.6);
    --bg-selected-row: #1e2a40;
    --bg-stripe: #14161c;

    --border-color: #2a2c34;
    --border-light: #222430;
    --border-focus: #4a7dff;

    --text-primary: #e4e6ec;
    --text-secondary: #9a9eae;
    --text-tertiary: #6a6e7e;
    --text-inverse: #ffffff;
    --text-link: #6a9dff;

    --accent: #4a7dff;
    --accent-hover: #6a9dff;
    --accent-light: #1e2a40;
    --success: #22c55e;
    --success-light: #14261c;
    --warning: #f59e0b;
    --warning-light: #2a2214;
    --danger: #ef4444;
    --danger-light: #2a1414;
    --info: #3b82f6;
    --info-light: #141e2a;

    --scrollbar-thumb: #3a3c44;
    --scrollbar-track: transparent;
}

/* ─── Reset & Base ─────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-sans);
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

::selection {
    background: var(--accent);
    color: var(--text-inverse);
}

a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Buttons ──────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-sans);
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    line-height: 1;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.btn i { font-size: 0.85em; }

.btn-xs  { padding: 4px 8px;   font-size: 11px; border-radius: var(--radius-sm); }
.btn-sm  { padding: 6px 12px;  font-size: 12px; }
.btn-md  { padding: 8px 16px;  font-size: 13px; }
.btn-lg  { padding: 12px 24px; font-size: 15px; border-radius: var(--radius-lg); }

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-outline:hover:not(:disabled) { background: var(--bg-hover); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover:not(:disabled) { background: var(--bg-hover); color: var(--text-primary); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover:not(:disabled) { filter: brightness(1.1); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { filter: brightness(1.1); }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover:not(:disabled) { filter: brightness(1.1); }

/* ─── Form Controls ────────────────────────────────────────────────────── */
input[type="text"], input[type="number"], input[type="email"],
input[type="search"], textarea, select {
    font-family: var(--font-sans);
    font-size: 13px;
    padding: 7px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, textarea:focus, select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(74,125,255,0.15);
}
select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236a6e7e' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: 28px;
}

/* ─── Top Bar ──────────────────────────────────────────────────────────── */
.topbar {
    height: var(--topbar-height);
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 16px;
    z-index: 100;
    position: relative;
}
.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 200px;
}
.topbar-center { flex: 1; }
.topbar-right {
    display: flex;
    align-items: center;
    gap: 4px;
}
.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.sidebar-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}
.logo i { color: var(--accent); font-size: 18px; }
.logo-icon { border-radius: 5px; flex-shrink: 0; }

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-tertiary);
}
.breadcrumb-item { color: var(--text-secondary); }
.breadcrumb-sep { color: var(--text-tertiary); }
.breadcrumb-item.active { color: var(--text-primary); font-weight: 500; }

/* ─── Layout ───────────────────────────────────────────────────────────── */
.topbar { flex-shrink: 0; }
.app-footer { flex-shrink: 0; }

.app-container {
    display: flex;
    flex: 1;
    min-height: 0;
}

/* ─── Sidebar ──────────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.3s ease, min-width 0.3s ease;
}
.sidebar.collapsed {
    width: 0;
    min-width: 0;
    border-right: none;
}

.sidebar-section {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.sidebar-section:first-child { flex-shrink: 0; }
.sidebar-section:last-child { flex: 1; overflow: hidden; }

.sidebar-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px 8px;
}
.sidebar-section-header h3 {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-tertiary);
}
.sidebar-actions {
    display: flex;
    gap: 4px;
}

.file-list, .table-list {
    overflow-y: auto;
    padding: 0 8px 8px;
}

.file-item, .table-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 12px;
    color: var(--text-secondary);
    position: relative;
}
.file-item:hover, .table-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.file-item.active, .table-item.active {
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 500;
}
.file-item i, .table-item i {
    font-size: 13px;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}
.file-item .file-name, .table-item .table-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.file-item .file-size, .table-item .row-count {
    font-size: 10px;
    color: var(--text-tertiary);
    flex-shrink: 0;
}
.file-item .file-delete, .table-item .table-actions-btn {
    opacity: 0;
    transition: opacity var(--transition);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    font-size: 11px;
}
.file-item:hover .file-delete,
.table-item:hover .table-actions-btn {
    opacity: 1;
}
.file-item .file-delete:hover { color: var(--danger); }

/* ─── Main Content ─────────────────────────────────────────────────────── */
.main-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

/* ─── Welcome Screen ───────────────────────────────────────────────────── */
.welcome-screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.welcome-inner {
    text-align: center;
    max-width: 500px;
    padding: 40px;
}
.welcome-icon {
    font-size: 64px;
    color: var(--accent);
    margin-bottom: 20px;
    opacity: 0.8;
}
.welcome-inner h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}
.welcome-inner p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 28px;
}
.welcome-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 24px;
}
.welcome-formats {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.format-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
    font-family: var(--font-mono);
}

.welcome-conversions {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.convert-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent-light);
    color: var(--accent);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}
.convert-badge i { font-size: 9px; opacity: 0.7; }

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    transition: all var(--transition);
    color: var(--text-tertiary);
}
.drop-zone i { font-size: 32px; margin-bottom: 10px; display: block; }
.drop-zone p { font-size: 13px; }
.drop-zone.drag-over {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent);
}

/* ─── Tab Bar ──────────────────────────────────────────────────────────── */
.data-view {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.tab-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
}
.tab-bar-left {
    display: flex;
    gap: 0;
}
.tab-bar-right {
    display: flex;
    align-items: center;
    gap: 6px;
}
.export-group { display: flex; gap: 4px; }

.tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: -1px;
}
.tab:hover { color: var(--text-primary); background: var(--bg-hover); }
.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}
.tab i { font-size: 12px; }

.tab-content {
    display: none;
    flex: 1;
    overflow: hidden;
    flex-direction: column;
}
.tab-content.active {
    display: flex;
}

/* ─── Data Toolbar ─────────────────────────────────────────────────────── */
.data-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    gap: 12px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    flex-shrink: 0;
}
.toolbar-left, .toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}
.search-box i {
    position: absolute;
    left: 10px;
    color: var(--text-tertiary);
    font-size: 12px;
    pointer-events: none;
}
.search-box input {
    padding-left: 32px;
    width: 260px;
}
.search-clear {
    position: absolute;
    right: 6px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
}
.search-clear:hover { color: var(--text-primary); }

.filter-badge {
    background: var(--accent);
    color: #fff;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 10px;
    margin-left: 4px;
}

.per-page-select select {
    padding: 5px 28px 5px 8px;
    font-size: 12px;
}

/* ─── Filter Panel ─────────────────────────────────────────────────────── */
.filter-panel {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    padding: 12px 16px;
    flex-shrink: 0;
}
.filter-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.filter-panel-header h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.filter-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 6px;
}
.filter-row select, .filter-row input {
    font-size: 12px;
    padding: 5px 8px;
}
.filter-row .filter-col { width: 160px; }
.filter-row .filter-op { width: 130px; }
.filter-row .filter-val { flex: 1; }
.filter-row .filter-remove {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    font-size: 14px;
}
.filter-row .filter-remove:hover { color: var(--danger); }

/* ─── Data Grid ────────────────────────────────────────────────────────── */
.data-grid-container {
    flex: 1;
    overflow: hidden;
    position: relative;
}
.data-grid-wrapper {
    width: 100%;
    height: 100%;
    overflow: auto;
}

.data-grid {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    table-layout: auto;
}
.data-grid thead {
    position: sticky;
    top: 0;
    z-index: 10;
}
.data-grid th {
    background: var(--bg-tertiary);
    padding: 8px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    transition: background var(--transition);
    position: relative;
}
.data-grid th:hover { background: var(--bg-hover); }
.data-grid th.sort-asc::after,
.data-grid th.sort-desc::after {
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: 6px;
    font-size: 9px;
    color: var(--accent);
}
.data-grid th.sort-asc::after { content: '\f077'; }
.data-grid th.sort-desc::after { content: '\f078'; }

.data-grid th.col-checkbox,
.data-grid td.col-checkbox {
    width: 40px;
    text-align: center;
    padding: 8px;
}
.data-grid th.col-rownum,
.data-grid td.col-rownum {
    width: 52px;
    text-align: center;
    color: var(--text-tertiary);
    font-size: 10px;
    font-family: var(--font-mono);
}
.data-grid th.col-actions,
.data-grid td.col-actions {
    width: 50px;
    text-align: center;
}

.data-grid td {
    padding: 6px 12px;
    border-bottom: 1px solid var(--border-light);
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: background var(--transition);
}
.data-grid tbody tr:nth-child(even) td {
    background: var(--bg-stripe);
}
.data-grid tbody tr:hover td {
    background: var(--bg-hover);
}
.data-grid tbody tr.selected td {
    background: var(--bg-selected-row) !important;
}

.data-grid td.null-value {
    color: var(--text-tertiary);
    font-style: italic;
}

.data-grid td.editable {
    cursor: pointer;
    position: relative;
}
.data-grid td.editable:hover {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
    border-radius: 2px;
}

.data-grid td .cell-edit-input {
    width: 100%;
    padding: 2px 4px;
    border: 2px solid var(--accent);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    outline: none;
    margin: -4px 0;
}

.row-delete-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    transition: all var(--transition);
}
.row-delete-btn:hover {
    color: var(--danger);
    background: var(--danger-light);
}

input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent);
    cursor: pointer;
}

.data-grid-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
    position: absolute;
    inset: 0;
}
.data-grid-empty i { font-size: 40px; margin-bottom: 12px; opacity: 0.5; }
.data-grid-empty p { font-size: 14px; }

/* ─── Pagination ───────────────────────────────────────────────────────── */
.pagination-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
    font-size: 12px;
}
.pagination-info { color: var(--text-secondary); }
.pagination-controls {
    display: flex;
    align-items: center;
    gap: 4px;
}
.page-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    padding: 0 8px;
}
.page-indicator input {
    width: 48px;
    text-align: center;
    padding: 3px 4px;
    font-size: 12px;
}

/* ─── Schema Tab ───────────────────────────────────────────────────────── */
.schema-container {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}
.schema-section {
    margin-bottom: 24px;
}
.schema-section h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}
.schema-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.schema-header h3 { margin-bottom: 0; }

.schema-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}
.schema-table th {
    background: var(--bg-tertiary);
    padding: 8px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}
.schema-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
}
.schema-table td .type-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    font-family: var(--font-mono);
    background: var(--info-light);
    color: var(--info);
}
.schema-table td .pk-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    background: var(--warning-light);
    color: var(--warning);
}
.schema-table .col-drop-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
}
.schema-table .col-drop-btn:hover {
    color: var(--danger);
    background: var(--danger-light);
}

.sql-display {
    background: var(--bg-code);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ─── Query Tab ────────────────────────────────────────────────────────── */
.query-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}
.query-editor-wrap {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.query-editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}
.query-actions { display: flex; gap: 6px; }

#sqlEditor {
    width: 100%;
    height: 160px;
    resize: vertical;
    border: none;
    border-radius: 0;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    background: var(--bg-code);
    color: var(--text-primary);
    outline: none;
    tab-size: 2;
}
#sqlEditor:focus {
    box-shadow: none;
}

.query-results {
    flex: 1;
    overflow: auto;
    padding: 0;
}
.query-results .results-header {
    display: flex;
    justify-content: space-between;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    font-size: 11px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 5;
}
.query-results .query-error {
    padding: 16px;
    color: var(--danger);
    background: var(--danger-light);
    border-radius: var(--radius-md);
    margin: 12px;
    font-size: 13px;
    font-family: var(--font-mono);
}
.query-results .query-success {
    padding: 16px;
    color: var(--success);
    background: var(--success-light);
    border-radius: var(--radius-md);
    margin: 12px;
    font-size: 13px;
}

.query-results table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}
.query-results table th {
    background: var(--bg-tertiary);
    padding: 8px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 11px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 28px;
    z-index: 4;
}
.query-results table td {
    padding: 6px 12px;
    border-bottom: 1px solid var(--border-light);
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ─── Stats Tab ────────────────────────────────────────────────────────── */
.stats-container {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}
.stats-overview {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    min-width: 140px;
    flex: 1;
}
.stat-card .stat-label {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}
.stat-card .stat-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}
.stat-card .stat-value.accent { color: var(--accent); }

.col-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}
.col-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
}
.col-stat-card .col-stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.col-stat-card .col-stat-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
}
.col-stat-card .col-stat-type {
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--info-light);
    color: var(--info);
    font-weight: 500;
}
.col-stat-card .stat-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    font-size: 12px;
    border-bottom: 1px solid var(--border-light);
}
.col-stat-card .stat-row:last-child { border-bottom: none; }
.col-stat-card .stat-row .stat-key { color: var(--text-secondary); }
.col-stat-card .stat-row .stat-val {
    font-weight: 500;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-primary);
}

/* ─── Empty States ─────────────────────────────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-tertiary);
    text-align: center;
}
.empty-state i { font-size: 32px; margin-bottom: 12px; opacity: 0.5; }
.empty-state p { font-size: 13px; }
.empty-state.small { padding: 20px; }
.empty-state.small i { font-size: 24px; margin-bottom: 8px; }
.empty-state.small p { font-size: 12px; }

/* ─── Modal ────────────────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}
.modal-overlay.visible {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    animation: modalIn 0.2s ease;
}
.modal.modal-sm { max-width: 420px; }
.modal.modal-lg { max-width: 720px; }

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--border-light);
}
.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}
.modal-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 16px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.modal-close:hover { background: var(--bg-hover); color: var(--text-primary); }

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 14px 20px;
    border-top: 1px solid var(--border-light);
}

/* ─── Modal Form ───────────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 14px;
}
.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
}
.form-group .form-hint {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 3px;
}
.form-row {
    display: flex;
    gap: 10px;
}
.form-row .form-group { flex: 1; }

.column-def-row {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    margin-bottom: 8px;
    padding: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}
.column-def-row .form-group { margin-bottom: 0; flex: 1; }
.column-def-row .form-group.small { flex: 0 0 auto; }
.column-def-row .col-remove {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 7px;
    font-size: 14px;
}
.column-def-row .col-remove:hover { color: var(--danger); }

/* ─── DB Info ──────────────────────────────────────────────────────────── */
.db-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.db-info-item {
    padding: 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}
.db-info-item .label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    margin-bottom: 2px;
}
.db-info-item .value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ─── Toast Notifications ──────────────────────────────────────────────── */
#toast-container {
    position: fixed;
    top: 60px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    font-size: 13px;
    color: var(--text-primary);
    animation: toastIn 0.3s ease;
    pointer-events: all;
    max-width: 380px;
}
.toast.toast-success { border-left: 3px solid var(--success); }
.toast.toast-error   { border-left: 3px solid var(--danger); }
.toast.toast-warning { border-left: 3px solid var(--warning); }
.toast.toast-info    { border-left: 3px solid var(--info); }

.toast i { font-size: 16px; flex-shrink: 0; }
.toast.toast-success i { color: var(--success); }
.toast.toast-error i   { color: var(--danger); }
.toast.toast-warning i { color: var(--warning); }
.toast.toast-info i    { color: var(--info); }

.toast .toast-msg { flex: 1; }
.toast .toast-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 2px;
    font-size: 12px;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(20px); }
    to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(20px); }
}

/* ─── Context Menu ─────────────────────────────────────────────────────── */
.context-menu {
    position: fixed;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    min-width: 160px;
    padding: 4px;
    animation: modalIn 0.15s ease;
}
.context-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    font-size: 12px;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}
.context-menu-item:hover { background: var(--bg-hover); }
.context-menu-item i { width: 16px; text-align: center; color: var(--text-tertiary); font-size: 12px; }
.context-menu-item.danger { color: var(--danger); }
.context-menu-item.danger i { color: var(--danger); }
.context-menu-sep {
    height: 1px;
    background: var(--border-light);
    margin: 4px 8px;
}

/* ─── Loading Spinner ──────────────────────────────────────────────────── */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
}

/* ─── Footer ───────────────────────────────────────────────────────────── */
.app-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 11px;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    flex-shrink: 0;
}
.app-footer a {
    color: var(--accent);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition);
}
.app-footer a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* ─── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: var(--topbar-height);
        bottom: 0;
        z-index: 50;
        box-shadow: var(--shadow-lg);
    }
    .sidebar.collapsed {
        width: 0;
        min-width: 0;
    }
    .tab-bar { flex-wrap: wrap; }
    .tab-bar-right { padding: 4px 0; }
    .data-toolbar { flex-wrap: wrap; }
    .search-box input { width: 180px; }
}