:root {
  --bg: #0f1117;
  --bg-surface: #161822;
  --bg-elevated: #1c1f2e;
  --bg-hover: #252839;
  --bg-active: #2a2d40;
  --border: #2a2d40;
  --border-light: #363a50;
  --text: #e4e6f0;
  --text-secondary: #9499b3;
  --text-muted: #6e7290;
  --accent: #6c5ce7;
  --accent-hover: #7d6ff0;
  --accent-glow: rgba(108, 92, 231, 0.15);
  --green: #00d68f;
  --green-bg: rgba(0, 214, 143, 0.1);
  --red: #ff6b6b;
  --red-bg: rgba(255, 107, 107, 0.1);
  --yellow: #ffd93d;
  --yellow-bg: rgba(255, 217, 61, 0.1);
  --blue: #4fc3f7;
  --blue-bg: rgba(79, 195, 247, 0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.4);
  --header-h: 52px;
  --status-h: 28px;
  --sidebar-w: 260px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ── Light Theme ── */
.light {
  --bg: #f5f6fa;
  --bg-surface: #ffffff;
  --bg-elevated: #f0f1f5;
  --bg-hover: #e8e9f0;
  --bg-active: #dddee8;
  --border: #d5d7e0;
  --border-light: #c5c7d0;
  --text: #1a1c2e;
  --text-secondary: #5a5e78;
  --text-muted: #8a8ea8;
  --accent: #6c5ce7;
  --accent-hover: #5b4bd6;
  --accent-glow: rgba(108, 92, 231, 0.1);
  --green: #00b87a;
  --green-bg: rgba(0, 184, 122, 0.08);
  --red: #e05555;
  --red-bg: rgba(224, 85, 85, 0.08);
  --yellow: #d4a800;
  --yellow-bg: rgba(212, 168, 0, 0.08);
  --blue: #2196f3;
  --blue-bg: rgba(33, 150, 243, 0.08);
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.12);
}

/* ── Light Theme Syntax Highlighting ── */
.light .hl-keyword { color: #7c3aed; font-weight: 600; }
.light .hl-function { color: #2563eb; }
.light .hl-string { color: #16a34a; }
.light .hl-number { color: #ea580c; }
.light .hl-comment { color: #6b7280; font-style: italic; }
.light .hl-operator { color: #0891b2; }
.light .hl-type { color: #ca8a04; }
.light .hl-null { color: #dc2626; }
.light .hl-bracket { color: #4b5563; }

/* ── Light Theme JSON Tree ── */
.light .json-key { color: #7c3aed; }
.light .json-string { color: #16a34a; }
.light .json-number { color: #ea580c; }
.light .json-boolean { color: #dc2626; }
.light .json-null { color: #dc2626; }
.light .json-bracket { color: #0891b2; }

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

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

input, textarea, select, button { font-family: inherit; font-size: inherit; }

/* ── App Layout ── */
.app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
}

/* ── Header ── */
.header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  gap: 12px;
  flex-shrink: 0;
  z-index: 100;
  width: 100%;
  box-sizing: border-box;
}
.header-left, .header-right { display: flex; align-items: center; gap: 8px; }
.header-center { flex: 1; text-align: center; min-width: 0; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; color: var(--text); white-space: nowrap; }
.db-name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-size: 13px;
  font-weight: 500;
}
.btn:hover { background: var(--bg-hover); border-color: var(--border-light); }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: transparent; border-color: var(--accent); color: var(--accent); }
.btn-secondary:hover { background: var(--accent-glow); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); }
.btn-danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn-danger:hover { background: #ff5252; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 10px 24px; font-size: 15px; }
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }

/* ── Main Area ── */
.main {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
  width: 100%;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--transition), transform var(--transition);
  overflow: hidden;
  z-index: 90;
}
.sidebar.collapsed { width: 0; border-right: none; }
.sidebar-header { padding: 12px; border-bottom: 1px solid var(--border); }
.search-input {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}
.search-input:focus { border-color: var(--accent); }
.search-input::placeholder { color: var(--text-muted); }
.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}
.sidebar-section { margin-bottom: 4px; }
.sidebar-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}
.table-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-secondary);
  font-size: 13px;
}
.table-item:hover { background: var(--bg-hover); color: var(--text); }
.table-item.active { background: var(--accent-glow); color: var(--accent); }
.table-item svg { flex-shrink: 0; }
.table-item-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table-item-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ── Content ── */
.content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  position: relative;
}

/* ── Welcome ── */
.welcome {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  width: 100%;
  min-height: 0;
}
.welcome-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
  max-width: 480px;
}
.welcome-inner h1 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.welcome-inner p { color: var(--text-secondary); font-size: 15px; line-height: 1.6; }
.welcome-actions { display: flex; gap: 12px; margin-top: 8px; }
.welcome-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}
.feature {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-secondary);
}

/* ── Tab Bar ── */
.tab-bar {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0 4px;
  min-height: 38px;
  gap: 2px;
  overflow-x: auto;
  flex-shrink: 0;
}
.tabs { display: flex; align-items: center; gap: 2px; flex: 1; min-width: 0; overflow-x: auto; }
.tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: transparent;
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
  flex-shrink: 0;
}
.tab:hover { color: var(--text); background: var(--bg-hover); }
.tab.active {
  color: var(--accent);
  background: var(--bg);
}
.tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}
.tab-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  transition: all var(--transition);
}
.tab:hover .tab-close { opacity: 1; }
.tab-close:hover { background: var(--red-bg); color: var(--red); }

/* ── Tab Panels ── */
.tab-panels {
  flex: 1;
  overflow: hidden;
  position: relative;
  min-height: 0;
  width: 100%;
  display: none; /* Hidden by default until tabs exist */
}
.tab-panel {
  display: none;
  flex-direction: column;
  height: 100%;
  width: 100%;
  overflow: hidden;
}
.tab-panel.active { display: flex; }

/* ── SQL Editor ── */
.editor-wrapper {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  width: 100%;
}
.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.editor-toolbar .btn { font-size: 12px; }
.sql-editor {
  width: 100%;
  min-height: 100px;
  max-height: 300px;
  padding: 12px 16px;
  background: var(--bg);
  border: none;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  tab-size: 2;
}
.sql-editor::placeholder { color: var(--text-muted); }

/* ── Results ── */
.results-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
  width: 100%;
}
.results-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.results-info .badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.badge-success { background: var(--green-bg); color: var(--green); }
.badge-error { background: var(--red-bg); color: var(--red); }
.badge-info { background: var(--blue-bg); color: var(--blue); }
.table-wrapper {
  flex: 1;
  overflow: auto;
  min-height: 0;
  width: 100%;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  position: sticky;
  top: 0;
  background: var(--bg-elevated);
  padding: 8px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  z-index: 1;
}
.data-table th:hover { color: var(--text); }
.data-table td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12px;
}
.data-table tr:hover td { background: var(--bg-hover); }
.data-table tr.selected td { background: var(--accent-glow); }
.data-table td.null { color: var(--text-muted); font-style: italic; }
.data-table td.number { color: var(--blue); }
.data-table td.string { color: var(--green); }

/* ── Cell Selection ── */
.data-table td.cell-selected {
  background: var(--accent-glow) !important;
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.data-table td.cell-selecting {
  background: rgba(108, 92, 231, 0.08) !important;
}
.data-table td:focus {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  background: var(--bg-hover);
}

/* ── Search Highlight ── */
.data-table td .search-highlight {
  background: var(--yellow-bg);
  color: var(--yellow);
  padding: 0 2px;
  border-radius: 2px;
}

/* ── Data Search Input ── */
.data-search-input {
  width: 200px;
  padding: 4px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 12px;
  outline: none;
  transition: border-color var(--transition);
}
.data-search-input:focus { border-color: var(--accent); }
.data-search-input::placeholder { color: var(--text-muted); }
.cell-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition);
}
.data-table tr:hover .cell-actions { opacity: 1; }
.cell-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}
.cell-action:hover { background: var(--bg-active); color: var(--text); }

/* ── Data Table Panel ── */
.data-panel-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  width: 100%;
  box-sizing: border-box;
}
.pagination {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.pagination-info { font-size: 12px; color: var(--text-secondary); margin: 0 8px; }

/* ── Structure View ── */
.structure-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.structure-table th {
  position: sticky;
  top: 0;
  background: var(--bg-elevated);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
  z-index: 1;
}
.structure-table td {
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
}
.structure-table tr:hover td { background: var(--bg-hover); }
.type-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
}
.type-integer { background: var(--blue-bg); color: var(--blue); }
.type-text { background: var(--green-bg); color: var(--green); }
.type-real { background: var(--yellow-bg); color: var(--yellow); }
.type-blob { background: var(--red-bg); color: var(--red); }
.pk-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  background: var(--accent-glow);
  color: var(--accent);
}

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}
.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.2s ease;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-body {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
}
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

/* ── Form Elements ── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.form-input, .form-select {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}
.form-input:focus, .form-select:focus { border-color: var(--accent); }
.form-input::placeholder { color: var(--text-muted); }
.form-select { cursor: pointer; }
.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }
.form-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
}
.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

/* ── Context Menu ── */
.context-menu {
  position: fixed;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 4px;
  min-width: 180px;
  z-index: 2000;
  animation: fadeIn 0.1s ease;
}
.context-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.context-item:hover { background: var(--bg-hover); color: var(--text); }
.context-item.danger { color: var(--red); }
.context-item.danger:hover { background: var(--red-bg); }
.context-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ── Toast ── */
.toast-container {
  position: fixed;
  bottom: 40px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 3000;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: 13px;
  color: var(--text);
  animation: slideIn 0.3s ease;
  pointer-events: auto;
  max-width: 360px;
}
.toast-success { border-left: 3px solid var(--green); }
.toast-error { border-left: 3px solid var(--red); }
.toast-info { border-left: 3px solid var(--blue); }

/* ── Status Bar ── */
.statusbar {
  height: var(--status-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
  width: 100%;
  box-sizing: border-box;
}
.statusbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  overflow: hidden;
}
.statusbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.statusbar-brand {
  font-weight: 600;
  color: var(--text-secondary);
}
.statusbar-divider {
  color: var(--border-light);
}
.statusbar-link {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
.statusbar-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ── Autocomplete ── */
.autocomplete-dropdown {
  position: fixed;
  display: none;
  max-height: 220px;
  min-width: 220px;
  max-width: 300px;
  overflow-y: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 5000;
  padding: 4px;
  animation: fadeIn 0.08s ease;
}
.autocomplete-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: background 0.1s ease;
  white-space: nowrap;
  overflow: hidden;
}
.autocomplete-item:hover,
.autocomplete-item.selected {
  background: var(--bg-hover);
  color: var(--text);
}
.autocomplete-item.selected {
  background: var(--accent-glow);
}
.autocomplete-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  font-family: var(--font-mono);
}
.autocomplete-icon-keyword { background: rgba(199, 146, 234, 0.15); color: #c792ea; }
.autocomplete-icon-function { background: rgba(130, 170, 255, 0.15); color: #82aaff; }
.autocomplete-icon-type { background: rgba(255, 203, 107, 0.15); color: #ffcb6b; }
.autocomplete-icon-table { background: var(--green-bg); color: var(--green); }
.autocomplete-icon-view { background: var(--blue-bg); color: var(--blue); }
.autocomplete-icon-column { background: rgba(255, 214, 102, 0.1); color: #ffd666; }
.autocomplete-text {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
}
.autocomplete-detail {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100px;
  flex-shrink: 0;
}
.autocomplete-type {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  display: none;
}

/* ── Animations ── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  :root { --sidebar-w: 100%; }
  .header { padding: 0 8px; }
  .header-center { display: none; }
  .btn span.btn-text { display: none; }
  .logo span { display: none; }
  .main { position: relative; }
  .sidebar {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform var(--transition);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { transform: translateX(0); }
  .welcome-inner h1 { font-size: 22px; }
  .welcome-actions { flex-direction: column; width: 100%; }
  .welcome-actions .btn { width: 100%; justify-content: center; }
  .welcome-features { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; }
  .data-table td { max-width: 150px; }
  .modal { max-width: 100%; margin: 10px; }
}

@media (max-width: 480px) {
  .header-right .btn:not(.btn-primary) { display: none; }
  .tab-bar { padding: 0 2px; }
  .tab { padding: 6px 10px; font-size: 11px; }
}

/* ── Syntax Highlight Editor ── */
.editor-container {
  position: relative;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.editor-highlight {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
  pointer-events: none;
  overflow: auto;
  color: var(--text-secondary);
  tab-size: 2;
}
.sql-editor {
  position: relative;
  z-index: 1;
  background: transparent;
  caret-color: var(--text);
  color: transparent;
}
.editor-container .sql-editor,
.editor-container .editor-highlight {
  min-height: 100px;
  max-height: 300px;
}
.hl-keyword { color: #c792ea; font-weight: 600; }
.hl-function { color: #82aaff; }
.hl-string { color: #c3e88d; }
.hl-number { color: #f78c6c; }
.hl-comment { color: #7a8a9a; font-style: italic; }
.hl-operator { color: #89ddff; }
.hl-type { color: #ffcb6b; }
.hl-null { color: #ff5370; }
.hl-bracket { color: #bfc7d5; }

/* ── Inline Edit ── */
.inline-edit-input {
  width: 100%;
  padding: 2px 6px;
  background: var(--bg);
  border: 2px solid var(--accent);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
}

/* ── Dashboard ── */
.dashboard {
  padding: 24px;
  overflow-y: auto;
  height: 100%;
  width: 100%;
  box-sizing: border-box;
}
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.stat-card-icon.purple { background: var(--accent-glow); color: var(--accent); }
.stat-card-icon.green { background: var(--green-bg); color: var(--green); }
.stat-card-icon.blue { background: var(--blue-bg); color: var(--blue); }
.stat-card-icon.yellow { background: var(--yellow-bg); color: var(--yellow); }
.stat-card-icon.red { background: var(--red-bg); color: var(--red); }
.stat-card-value { font-size: 28px; font-weight: 700; font-family: var(--font-mono); }
.stat-card-label { font-size: 12px; color: var(--text-secondary); }
.dashboard-section {
  margin-bottom: 24px;
}
.dashboard-section h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.table-list-compact {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
}
.table-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}
.table-list-item:hover { border-color: var(--accent); background: var(--accent-glow); }
.table-list-item-name { font-weight: 500; font-size: 13px; }
.table-list-item-meta { font-size: 11px; color: var(--text-muted); font-family: var(--font-mono); }

/* ── Create Table Form ── */
.create-table-columns { margin-top: 12px; }
.create-table-columns .col-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 6px;
}
.col-row input, .col-row select {
  padding: 6px 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-size: 12px;
  outline: none;
}
.col-row input:focus, .col-row select:focus { border-color: var(--accent); }
.col-row .col-name { flex: 2; }
.col-row .col-type { flex: 1; }
.col-row .col-pk { width: 60px; text-align: center; }
.col-row .col-nn { width: 60px; text-align: center; }
.col-row .col-default { flex: 1; }
.col-row .col-remove {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.col-row .col-remove:hover { background: var(--red-bg); color: var(--red); }
.col-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}
.col-header span:nth-child(1) { flex: 2; }
.col-header span:nth-child(2) { flex: 1; }
.col-header span:nth-child(3) { width: 60px; text-align: center; }
.col-header span:nth-child(4) { width: 60px; text-align: center; }
.col-header span:nth-child(5) { flex: 1; }

/* ── History / Bookmarks ── */
.history-list {
  max-height: 400px;
  overflow-y: auto;
}
.history-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
}
.history-item:hover { background: var(--bg-hover); }
.history-item-time {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  font-family: var(--font-mono);
  min-width: 60px;
}
.history-item-sql {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-item-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 8px;
  white-space: nowrap;
}

/* ── Triggers / Views Manager ── */
.manager-list {
  width: 100%;
  border-collapse: collapse;
}
.manager-list th {
  background: var(--bg-elevated);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
  font-size: 12px;
}
.manager-list td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.manager-list tr:hover td { background: var(--bg-hover); }
.manager-list .sql-preview {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Foreign Key Viewer ── */
.fk-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 8px;
}
.fk-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 13px;
}
.fk-arrow { color: var(--accent); }
.fk-detail {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-secondary);
}
.fk-detail code {
  font-family: var(--font-mono);
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--blue);
}

/* ── ERD Container ── */
.erd-container {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: var(--bg);
  cursor: grab;
  min-height: 0;
  width: 100%;
}
.erd-container svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* ── Enhanced Cells (BLOB/JSON) ── */
.data-table td.enhanced { color: var(--text); }
.blob-thumbnail {
  transition: transform 0.15s ease;
}
.blob-thumbnail:hover {
  transform: scale(1.08);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.json-preview {
  transition: color 0.15s ease;
}
.json-preview:hover {
  color: var(--accent) !important;
  text-decoration: underline;
}

/* ── JSON Tree Viewer ── */
.json-key { color: #c792ea; }
.json-string { color: #c3e88d; }
.json-number { color: #f78c6c; }
.json-boolean { color: #ff5370; }
.json-null { color: #ff5370; font-style: italic; }
.json-bracket { color: #89ddff; font-weight: 600; }
.json-toggle { font-size: 10px; margin-right: 2px; display: inline-block; width: 12px; }
.json-children { margin-left: 16px; border-left: 1px solid var(--border); padding-left: 4px; }
.json-collapsed { font-style: italic; }

/* ── Explain Tree ── */
.explain-tree-container .explain-node {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 0;
  border-left: 2px solid var(--border);
  margin-left: 4px;
}
.explain-tree-container .explain-node:hover {
  background: var(--bg-hover);
  border-radius: 2px;
}
.explain-icon {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.explain-detail {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}
.explain-children {
  border-left: 1px dashed var(--border-light);
  margin-left: 11px;
}

/* ── Multi-Query Result Tabs ── */
.multi-result-tabs::-webkit-scrollbar { height: 4px; }
.multi-result-tabs::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 2px; }

/* ── Markdown Tooltip ── */
.md-tooltip h1, .md-tooltip h2, .md-tooltip h3, .md-tooltip h4, .md-tooltip h5, .md-tooltip h6 {
  color: var(--text);
}
.md-tooltip a {
  color: var(--blue);
  text-decoration: none;
}
.md-tooltip a:hover {
  text-decoration: underline;
}
.md-tooltip code {
  background: var(--bg);
  padding: 1px 4px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.md-tooltip blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 8px;
  margin: 4px 0;
  color: var(--text-secondary);
}