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

:root {
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 16px;

  --transition: 180ms ease;

  /* Light theme */
  --bg:          #f8f9fc;
  --bg-card:     #ffffff;
  --bg-sidebar:  #ffffff;
  --bg-input:    #f1f3f9;
  --bg-hover:    #f0f2f8;
  --bg-active:   #ede9fe;

  --border:      #e2e5ef;
  --border-focus:#6366f1;

  --text:        #0f1117;
  --text-muted:  #6b7280;
  --text-faint:  #9ca3af;

  --accent:      #6366f1;
  --accent-dark: #4f46e5;
  --accent-bg:   #ede9fe;

  --success:     #10b981;
  --warning:     #f59e0b;
  --danger:      #ef4444;

  --shadow-sm:   0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow:      0 4px 12px rgba(0,0,0,.08), 0 1px 4px rgba(0,0,0,.04);
  --shadow-lg:   0 12px 32px rgba(0,0,0,.12), 0 2px 8px rgba(0,0,0,.06);

  --status-h:    44px;
  --header-h:    64px;
}

[data-theme="dark"] {
  --bg:          #0d0f14;
  --bg-card:     #161a24;
  --bg-sidebar:  #161a24;
  --bg-input:    #1e2233;
  --bg-hover:    #1e2233;
  --bg-active:   #2d2b55;

  --border:      #252a3a;
  --border-focus:#818cf8;

  --text:        #e8eaf0;
  --text-muted:  #8b93a8;
  --text-faint:  #4b5563;

  --accent:      #818cf8;
  --accent-dark: #6366f1;
  --accent-bg:   #2d2b55;

  --shadow-sm:   0 1px 3px rgba(0,0,0,.3);
  --shadow:      0 4px 16px rgba(0,0,0,.4);
  --shadow-lg:   0 12px 40px rgba(0,0,0,.5);
}

html { height: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  height: 100%;
  display: flex;
  flex-direction: column;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ──────────────────────────────────────────────────────────── */
h1 { font-size: 1.25rem; font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: .875rem; font-weight: 600; letter-spacing: -.01em; }
code {
  font-family: var(--font-mono);
  font-size: .8em;
  background: var(--bg-input);
  padding: 1px 5px;
  border-radius: 4px;
}

/* ── Scrollbar ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }

/* ── Info Banner ────────────────────────────────────────────────────────── */
.info-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 6px 16px;
  background: var(--bg-input);
  border-bottom: 1px solid var(--border);
  font-size: .75rem;
  color: var(--text-muted);
  font-weight: 500;
}
.info-banner-close {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: .85rem;
  padding: 2px 4px;
  margin-left: auto;
  border-radius: var(--radius-sm);
  line-height: 1;
  transition: color var(--transition), background var(--transition);
}
.info-banner-close:hover { color: var(--text); background: var(--bg-hover); }

/* ── Mode Switcher ───────────────────────────────────────────────────────── */
.mode-switcher {
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 3px;
  gap: 2px;
  flex-shrink: 0;
}
.mode-pill {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 13px;
  border-radius: 99px;
  border: none;
  background: transparent;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-faint);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.mode-pill:hover { color: var(--text-muted); }
.mode-pill.active {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
}
.mode-pill-mysql.active { color: #c2410c; }
[data-theme="dark"] .mode-pill-mysql.active { color: #fb923c; }
.mode-pill-db2.active   { color: #1d4ed8; }
[data-theme="dark"] .mode-pill-db2.active   { color: #93c5fd; }
.mode-pill-oracle.active { color: #dc2626; }
[data-theme="dark"] .mode-pill-oracle.active { color: #f87171; }
.mode-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* ── Header Playground & Divider ─────────────────────────────────────────── */
.header-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
}
.header-playground-wrap {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  flex-shrink: 0;
}
.header-playground-label {
  font-size: .75rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.header {
  height: var(--header-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  z-index: 10;
}
.header-logo { display: flex; align-items: center; gap: 10px; }
.header-logo svg { height: 28px; width: auto; }
.header-logo .logo-text { font-size: .85rem; font-weight: 500; color: var(--text-muted); }
.header-spacer { flex: 1; }
.header-subtitle {
  font-size: .8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.header-subtitle::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

/* ── Main Layout ─────────────────────────────────────────────────────────── */
.main-layout {
  flex: 1;
  display: grid;
  grid-template-columns: 260px 1fr 300px;
  grid-template-rows: 1fr auto;
  min-height: 0;
  gap: 0;
  overflow: hidden;
}

.main-layout.playground-mode {
  grid-template-columns: 260px 1fr 0px;
}
.main-layout.playground-mode .panel-tasks {
  display: none;
}

/* ── Panels ──────────────────────────────────────────────────────────────── */
.panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
}
.panel:last-of-type { border-right: none; }

.panel-header {
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.panel-title {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
}
.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

/* ── Schema Panel ────────────────────────────────────────────────────────── */
.schema-table {
  margin-bottom: 6px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}
.schema-table-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  cursor: pointer;
  background: var(--bg-input);
  user-select: none;
  transition: background var(--transition);
}
.schema-table-header:hover { background: var(--bg-hover); }
.schema-table-header.active { background: var(--accent-bg); }

.schema-table-icon {
  width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.schema-table-name {
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}
.schema-table-count {
  font-size: .7rem;
  color: var(--text-faint);
  background: var(--border);
  padding: 1px 6px;
  border-radius: 99px;
}
.schema-chevron {
  width: 14px; height: 14px;
  color: var(--text-faint);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.schema-table.open .schema-chevron { transform: rotate(90deg); }

.schema-columns {
  display: none;
  padding: 6px 0;
}
.schema-table.open .schema-columns { display: block; }

.schema-col {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px 4px 36px;
  font-size: .78rem;
  cursor: pointer;
  transition: background var(--transition);
  border-radius: 4px;
  margin: 0 4px;
}
.schema-col:hover { background: var(--bg-hover); }
.schema-col-name { font-family: var(--font-mono); color: var(--text); flex: 1; }
.schema-col-type { color: var(--text-faint); font-size: .7rem; }

.schema-preview-btn {
  width: 100%;
  margin-top: 2px;
  padding: 5px 12px;
  font-size: .72rem;
  color: var(--accent);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color var(--transition);
}
.schema-preview-btn:hover { color: var(--accent-dark); }

/* ── SQL Editor Panel ────────────────────────────────────────────────────── */
.panel-editor {
  display: flex;
  flex-direction: column;
  background: var(--bg);
}
.editor-toolbar {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  background: var(--bg-card);
}
.editor-area {
  flex: 1;
  position: relative;
  min-height: 0;
}
#monaco-container, #cm-container {
  position: absolute;
  inset: 0;
}
#sql-fallback {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: .85rem;
  background: var(--bg-input);
  color: var(--text);
  resize: none;
  line-height: 1.7;
}

.result-area {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  min-height: 180px;
  max-height: 45vh;
}
.result-toolbar {
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.result-meta {
  font-size: .75rem;
  color: var(--text-muted);
  display: flex;
  gap: 14px;
  flex: 1;
}
.result-meta span { display: flex; align-items: center; gap: 4px; }
.result-scroll {
  flex: 1;
  overflow: auto;
  padding: 4px 0;
}

/* ── Data Table ──────────────────────────────────────────────────────────── */
.data-table {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  font-size: .8rem;
}
.data-table th {
  position: sticky;
  top: 0;
  background: var(--bg-input);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
  z-index: 1;
}
.data-table td {
  padding: 7px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  white-space: nowrap;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--font-mono);
  font-size: .78rem;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-hover); }
.data-table td.null-val { color: var(--text-faint); font-style: italic; }

/* ── Tasks Panel ─────────────────────────────────────────────────────────── */
.panel-tasks { background: var(--bg-sidebar); }
.tasks-toggle {
  width: 100%;
  padding: 14px 16px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: .8rem;
  font-weight: 600;
  text-align: left;
  transition: background var(--transition);
}
.tasks-toggle:hover { background: var(--bg-hover); }
.tasks-toggle-icon { transition: transform var(--transition); }
.tasks-open .tasks-toggle-icon { transform: rotate(180deg); }

.tasks-list { display: none; flex: 1; overflow-y: auto; padding: 8px; }
.tasks-open .tasks-list { display: block; }

/* ── Tasks Meta Row ──────────────────────────────────────────────────────── */
.tasks-meta-row {
  padding: 6px 12px 6px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}
.toggle-wrap-sm { font-size: .75rem; color: var(--text-muted); }

.task-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.task-card:hover { border-color: var(--accent); box-shadow: var(--shadow); }

.task-header {
  padding: 10px 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  cursor: pointer;
  background: var(--bg-input);
}
.task-num {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-size: .65rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.task-info { flex: 1; min-width: 0; }
.task-title { font-weight: 600; font-size: .8rem; margin-bottom: 3px; }
.task-badges { display: flex; gap: 5px; flex-wrap: wrap; }

.badge {
  font-size: .65rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.badge-category { background: var(--bg-active); color: var(--accent); }
.badge-beginner  { background: #d1fae5; color: #065f46; }
.badge-intermediate { background: #fef3c7; color: #92400e; }
.badge-advanced  { background: #fee2e2; color: #991b1b; }
[data-theme="dark"] .badge-beginner    { background: #064e3b; color: #6ee7b7; }
[data-theme="dark"] .badge-intermediate { background: #78350f; color: #fcd34d; }
[data-theme="dark"] .badge-advanced    { background: #7f1d1d; color: #fca5a5; }

.task-body { display: none; padding: 10px 12px; border-top: 1px solid var(--border); }
.task-card.open .task-body { display: block; }
.task-description { font-size: .8rem; color: var(--text-muted); margin-bottom: 8px; line-height: 1.6; }
.task-objective {
  font-size: .75rem;
  color: var(--text-muted);
  background: var(--bg-input);
  border-left: 2px solid var(--accent);
  padding: 6px 10px;
  border-radius: 0 4px 4px 0;
  margin-bottom: 10px;
}
.task-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.task-actions .btn {
  width: 100%;
  justify-content: center;
}
.task-solution-block {
  display: none;
  margin-top: 10px;
  padding: 10px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.task-solution-block.visible { display: block; }
.task-solution-code {
  font-family: var(--font-mono);
  font-size: .78rem;
  white-space: pre;
  color: var(--accent);
  line-height: 1.6;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: inherit;
  text-decoration: none;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent-dark);
  box-shadow: 0 1px 3px rgba(99,102,241,.3);
}
.btn-primary:hover { background: var(--accent-dark); }

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--text-faint); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); }

.btn-sm { padding: 4px 10px; font-size: .75rem; }
.btn-xs { padding: 3px 8px; font-size: .72rem; }

.btn-icon { padding: 7px; }

/* ── Status Bar ──────────────────────────────────────────────────────────── */
.statusbar {
  height: var(--status-h);
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 0;
  flex-shrink: 0;
  box-shadow: 0 -1px 0 var(--border);
}
.statusbar-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  height: 100%;
  border-right: 1px solid var(--border);
  font-size: .75rem;
  color: var(--text-muted);
  cursor: default;
}
.statusbar-item:first-child { padding-left: 0; }
.statusbar-item:last-child { border-right: none; margin-left: auto; }
.statusbar-item .stat-val {
  font-weight: 700;
  color: var(--text);
  font-family: var(--font-mono);
}
.statusbar-item .stat-icon { font-size: .85rem; }

/* ── SQL Syntax Bar ──────────────────────────────────────────────────────── */
.syntax-bar {
  padding: 5px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.syntax-bar-label {
  font-size: .68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-faint);
  flex-shrink: 0;
}
.syntax-chips-empty {
  font-size: .72rem;
  color: var(--text-faint);
  font-style: italic;
}
.syntax-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: .7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: .03em;
  border: 1px solid transparent;
  animation: chipIn .15s ease;
}
@keyframes chipIn {
  from { opacity: 0; transform: scale(.85); }
  to   { opacity: 1; transform: scale(1); }
}

/* Farben je Keyword-Gruppe */
.chip-select   { background: #dbeafe; color: #1e40af; border-color: #bfdbfe; }
.chip-from     { background: #ede9fe; color: #5b21b6; border-color: #ddd6fe; }
.chip-where    { background: #fef9c3; color: #854d0e; border-color: #fef08a; }
.chip-join     { background: #dcfce7; color: #166534; border-color: #bbf7d0; }
.chip-group    { background: #fff7ed; color: #9a3412; border-color: #fed7aa; }
.chip-having   { background: #fce7f3; color: #9d174d; border-color: #fbcfe8; }
.chip-order    { background: #f0fdf4; color: #15803d; border-color: #bbf7d0; }
.chip-limit    { background: #f1f5f9; color: #475569; border-color: #e2e8f0; }
.chip-agg      { background: #fdf4ff; color: #7e22ce; border-color: #e9d5ff; }

[data-theme="dark"] .chip-select  { background: #1e3a5f; color: #93c5fd; border-color: #1d4ed8; }
[data-theme="dark"] .chip-from    { background: #2e1a5e; color: #c4b5fd; border-color: #6d28d9; }
[data-theme="dark"] .chip-where   { background: #422006; color: #fde68a; border-color: #92400e; }
[data-theme="dark"] .chip-join    { background: #052e16; color: #86efac; border-color: #166534; }
[data-theme="dark"] .chip-group   { background: #431407; color: #fdba74; border-color: #9a3412; }
[data-theme="dark"] .chip-having  { background: #500724; color: #f9a8d4; border-color: #9d174d; }
[data-theme="dark"] .chip-order   { background: #052e16; color: #6ee7b7; border-color: #065f46; }
[data-theme="dark"] .chip-limit   { background: #1e293b; color: #94a3b8; border-color: #334155; }
[data-theme="dark"] .chip-agg     { background: #3b0764; color: #d8b4fe; border-color: #7e22ce; }

/* ── Playground Toggle ───────────────────────────────────────────────────── */
.playground-bar {
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  flex-shrink: 0;
}
.toggle-wrap { display: flex; align-items: center; gap: 8px; font-size: .8rem; color: var(--text-muted); }

.toggle {
  position: relative;
  width: 36px; height: 20px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 99px;
  cursor: pointer;
  transition: background var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  left: 3px; top: 3px;
  width: 14px; height: 14px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(16px); }

/* ── Empty / Loading States ──────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 12px;
  color: var(--text-faint);
  padding: 32px;
  text-align: center;
}
.empty-state-icon { font-size: 2rem; opacity: .4; }
.empty-state-title { font-size: .85rem; font-weight: 600; color: var(--text-muted); }
.empty-state-text { font-size: .78rem; max-width: 320px; line-height: 1.6; text-wrap: balance; }
.empty-state-text p { margin: 0; }
.empty-state-text p + p { margin-top: .5em; }

.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Error Banner ────────────────────────────────────────────────────────── */
.error-banner {
  margin: 8px;
  padding: 10px 14px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  color: #991b1b;
  font-size: .8rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
[data-theme="dark"] .error-banner {
  background: #2d1515;
  border-color: #7f1d1d;
  color: #fca5a5;
}
.error-banner-icon { flex-shrink: 0; margin-top: 1px; }

/* ── Theme button ────────────────────────────────────────────────────────── */
.theme-btn {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  font-size: .9rem;
}
.theme-btn:hover { background: var(--bg-hover); color: var(--text); }

/* ── Divider / helpers ───────────────────────────────────────────────────── */
.divider { width: 1px; height: 20px; background: var(--border); flex-shrink: 0; }
.flex-gap { display: flex; align-items: center; gap: 8px; }
.ml-auto { margin-left: auto; }

/* ── Toast notifications ─────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 60px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
}
.toast {
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: .8rem;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  color: var(--text);
  animation: slideIn .2s ease;
  display: flex; align-items: center; gap: 8px;
}
.toast.success { border-color: var(--success); }
.toast.error   { border-color: var(--danger); }
@keyframes slideIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Modal ───────────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(3px);
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 32px 16px;
  overflow-y: auto;
  animation: fadeIn .15s ease;
}
.modal-backdrop[hidden] { display: none; }

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

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 860px;
  animation: slideUp .2s ease;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg-card);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  z-index: 1;
}
.modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.01em;
}
.modal-subtitle {
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: 3px;
}
.modal-close {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: .85rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}
.modal-close:hover { background: var(--bg-hover); color: var(--text); }

.modal-body {
  padding: 20px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.ref-section {}
.ref-section-title {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .8rem;
}
.ref-table th {
  background: var(--bg-input);
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  padding: 7px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.ref-table th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.ref-table th:last-child  { border-radius: 0 var(--radius-sm) 0 0; }

.ref-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.6;
  color: var(--text);
}
.ref-table tr:last-child td { border-bottom: none; }
.ref-table tr:hover td { background: var(--bg-hover); }

.ref-table td:first-child code { color: #b45309; }
.ref-table td:nth-child(2) code { color: var(--accent); }
.ref-table td:last-child { color: var(--text-muted); font-size: .75rem; }

/* col widths */
.ref-table th:first-child, .ref-table td:first-child { width: 32%; }
.ref-table th:nth-child(2), .ref-table td:nth-child(2) { width: 36%; }

.ref-table code {
  font-size: .78rem;
  background: var(--bg-input);
  padding: 1px 5px;
  border-radius: 4px;
  display: inline;
}

.ref-tip {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 14px;
  font-size: .8rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.ref-tip strong { color: var(--text); }

/* ── Mobile Navigation Bar ───────────────────────────────────────────────── */
.mobile-nav { display: none; }
.mobile-only { display: none; }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .main-layout { grid-template-columns: 220px 1fr; }
  .panel-tasks { display: none; }
}

@media (max-width: 700px) {
  /* Info Banner: ausblenden auf Mobile */
  .info-banner { display: none; }

  /* Mode Switcher: verkleinern auf Mobile */
  .mode-pill { padding: 4px 9px; font-size: .72rem; }

  /* Tasks Meta Row auf Mobile */
  .tasks-meta-row { padding: 8px 12px; }

  /* Header: compact, subtitle hidden */
  .header { height: 52px; padding: 0 12px; gap: 8px; }
  .header-subtitle { display: none; }
  .header-logo svg { height: 22px; }

  /* Show mobile-only elements */
  .mobile-only { display: inline-flex; }

  /* Layout: single column, tab-controlled */
  .main-layout { grid-template-columns: 1fr !important; }
  .panel-schema { display: none; }
  .panel-tasks  { display: none; }
  .panel-schema.mobile-active { display: flex; }
  .panel-tasks.mobile-active  { display: flex; }
  .panel-editor.mobile-hidden { display: none; }

  /* Tasks panel on mobile: skip the toggle, show list directly */
  .panel-tasks.mobile-active .tasks-toggle { display: none; }
  .panel-tasks.mobile-active .tasks-list   { display: block; }

  /* Statusbar hidden on mobile */
  .statusbar { display: none; }

  /* Mobile Nav Bar */
  .mobile-nav {
    display: flex;
    height: 56px;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    z-index: 10;
    box-shadow: 0 -2px 10px rgba(0,0,0,.07);
  }
  .mobile-nav-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    border: none;
    border-top: 2px solid transparent;
    background: transparent;
    color: var(--text-faint);
    font-size: .62rem;
    font-weight: 600;
    cursor: pointer;
    transition: color var(--transition), background var(--transition), border-color var(--transition);
    font-family: inherit;
    padding: 6px 4px 4px;
    letter-spacing: .02em;
    text-transform: uppercase;
  }
  .mobile-nav-tab svg { width: 22px; height: 22px; }
  .mobile-nav-tab.active {
    color: var(--accent);
    border-top-color: var(--accent);
  }

  /* Editor toolbar: 2 kompakte Zeilen auf Mobile */
  .editor-toolbar {
    padding: 6px 10px;
    gap: 5px;
    flex-wrap: wrap;
    align-items: center;
  }
  .editor-toolbar .btn   { flex: 0 0 auto; }
  .editor-toolbar .btn-sm { padding: 6px 10px; font-size: .75rem; }
  .editor-toolbar .divider { display: none; }
  .editor-toolbar .ml-auto { display: none; }

  /* Syntax bar */
  .syntax-bar { padding: 4px 10px; }

  /* Result area */
  .result-area { min-height: 140px; max-height: 36vh; }
  .result-toolbar { padding: 6px 10px; }

  /* Playground bar: komplett ausblenden auf Mobile */
  .playground-bar { display: none; }

  /* Header Playground & Divider ausblenden auf Mobile */
  .header-playground-wrap { display: none; }
  .header-divider { display: none; }

  /* Schema: Vorschau-Button ausblenden */
  .schema-preview-btn { display: none; }

  /* Modal: full-width on small screens */
  .modal-backdrop { padding: 16px 8px; align-items: flex-start; }
  .modal { border-radius: var(--radius); }
  .modal-body { padding: 14px 14px 20px; gap: 18px; }
  .modal-header { padding: 14px 16px 12px; }
  /* Ref-tables: horizontally scrollable so 3 columns don't break out of view */
  .ref-section { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .ref-table { font-size: .72rem; min-width: 480px; }
  .ref-table th, .ref-table td { padding: 6px 8px; }
}

/* ── Filter chips ────────────────────────────────────────────────────────── */
.filter-row {
  padding: 8px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}
.filter-chip {
  padding: 3px 9px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: transparent;
  font-size: .7rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
  font-family: inherit;
}
.filter-chip:hover, .filter-chip.active {
  background: var(--accent-bg);
  border-color: var(--accent);
  color: var(--accent);
}

/* ── DB Badge ────────────────────────────────────────────────────────────── */
.db-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .03em;
  flex-shrink: 0;
}
.db-badge-mysql {
  background: #fff7ed;
  color: #c2410c;
  border: 1px solid #fed7aa;
}
[data-theme="dark"] .db-badge-mysql {
  background: #431407;
  color: #fb923c;
  border-color: #9a3412;
}
.db-badge-db2 {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #93c5fd;
}
[data-theme="dark"] .db-badge-db2 {
  background: #1e3a8a;
  color: #93c5fd;
  border-color: #1d4ed8;
}
.header-subtitle-text {
  color: var(--text-muted);
  font-size: .8rem;
}

/* ── DB2 Note in Task Cards ───────────────────────────────────────────────── */
.task-db2-note {
  display: none;
  margin-top: 10px;
  padding: 10px 12px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-left: 3px solid #3b82f6;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .78rem;
  line-height: 1.6;
  color: #1e40af;
}
.task-db2-note.visible { display: block; }
.task-db2-note-header {
  font-weight: 700;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.task-db2-note pre {
  font-family: var(--font-mono);
  font-size: .75rem;
  background: rgba(59,130,246,.1);
  padding: 6px 8px;
  border-radius: 4px;
  margin-top: 6px;
  white-space: pre-wrap;
  word-break: break-word;
}
[data-theme="dark"] .task-db2-note {
  background: #172554;
  border-color: #1e40af;
  border-left-color: #60a5fa;
  color: #93c5fd;
}
[data-theme="dark"] .task-db2-note pre {
  background: rgba(96,165,250,.1);
}

/* ── DB2 Syntax Bar Hint ─────────────────────────────────────────────────── */
.db2-hint {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: .68rem;
  font-weight: 600;
  background: #eff6ff;
  border: 1px solid #93c5fd;
  color: #1d4ed8;
  margin-left: 6px;
  font-family: var(--font-sans);
}
.db2-hint-label {
  background: #3b82f6;
  color: white;
  border-radius: 99px;
  padding: 0 5px;
  font-size: .62rem;
}
[data-theme="dark"] .db2-hint {
  background: #172554;
  border-color: #1e40af;
  color: #93c5fd;
}
[data-theme="dark"] .db2-hint-label {
  background: #1d4ed8;
}

/* ── Panel icon ──────────────────────────────────────────────────────────── */
.panel-icon {
  width: 18px; height: 18px;
  color: var(--text-faint);
}

/* ── ERD Legend ──────────────────────────────────────────────────────────── */
.erd-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  padding: 10px 14px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: .73rem;
  color: var(--text-muted);
  margin-top: 4px;
}
.erd-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── Toggle small (Statusbar) ────────────────────────────────────────────── */
.toggle.toggle-sm { width: 28px; height: 16px; }
.toggle.toggle-sm .toggle-slider::before { width: 10px; height: 10px; left: 3px; top: 3px; }
.toggle.toggle-sm input:checked + .toggle-slider::before { transform: translateX(12px); }

/* ── DB2 Mode Statusbar ──────────────────────────────────────────────────── */
.statusbar-db2-label {
  font-size: .72rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}
.statusbar-db2-toggle.db2-mode-active .statusbar-db2-label {
  color: #1d4ed8;
  font-weight: 600;
}
[data-theme="dark"] .statusbar-db2-toggle.db2-mode-active .statusbar-db2-label {
  color: #93c5fd;
}

/* ── DB2 Translation Bar ─────────────────────────────────────────────────── */
.db2-translation-bar[hidden] { display: none; }
.db2-translation-bar {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  padding: 5px 12px;
  background: #eff6ff;
  border-bottom: 1px solid #bfdbfe;
  font-size: .72rem;
}
.db2-translation-label {
  font-weight: 700;
  color: #1d4ed8;
  flex-shrink: 0;
}
.db2-translation-bar code {
  font-family: 'JetBrains Mono', monospace;
  color: #1e40af;
  word-break: break-all;
}
[data-theme="dark"] .db2-translation-bar {
  background: rgba(30,58,138,.25);
  border-color: #1d4ed8;
}
[data-theme="dark"] .db2-translation-label { color: #93c5fd; }
[data-theme="dark"] .db2-translation-bar code { color: #bfdbfe; }

/* ── SQL2: 2-column layout (no tasks panel) ──────────────────────────────── */
.main-layout {
  grid-template-columns: 260px 1fr !important;
}
.panel-tasks { display: none !important; }
@media (max-width: 1024px) {
  .main-layout { grid-template-columns: 220px 1fr !important; }
}
@media (max-width: 768px) {
  .main-layout { grid-template-columns: 1fr !important; }
}