:root {
  --bg: #1e1e1e;
  --panel: #252526;
  --border: #3c3c3c;
  --fg: #d4d4d4;
  --fg-dim: #858585;
  --accent: #007acc;
  --accent-fg: #ffffff;
  --error: #f48771;
  --warning: #cca700;
  --value: #4ec9b0;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 1rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.mode-switch {
  display: flex;
  gap: 0.25rem;
}

.mode-switch button {
  background: transparent;
  color: var(--fg-dim);
  border: 1px solid var(--border);
  padding: 0.35rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
}

.mode-switch button[aria-selected="true"] {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}

.actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.actions button {
  background: var(--panel);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 0.35rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
}

.actions button.primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}

.actions button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.version-tag {
  color: var(--fg-dim);
  font-size: 0.8em;
  font-family: var(--font-mono);
  white-space: nowrap;
  cursor: help;
}

.layout {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 0;
}

.editor-pane,
.output-pane {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.editor-pane {
  border-right: 1px solid var(--border);
}

.editor {
  flex: 1 1 auto;
  min-height: 0;
}

.output-tabs {
  display: flex;
  gap: 0.25rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 0.25rem 0.5rem;
  font-size: 0.85em;
}

.output-tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--fg-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  cursor: pointer;
  font: inherit;
}

.output-tab.active {
  color: var(--fg);
  background: var(--bg);
  border-color: var(--border);
}

.sql-panel {
  white-space: pre;
  color: var(--value);
}

.sql-panel .sql-entry {
  border-bottom: 1px dashed var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
}

.sql-panel .sql-entry:last-child {
  border-bottom: none;
}

.progress {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 0.4rem 1rem 0.55rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  flex: 0 0 auto;
}

.progress[hidden] {
  /* HTML5 `hidden` is supposed to mean display: none, but our flex rule above
     overrides it. Spell it out so the bar actually disappears on init done. */
  display: none;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8em;
  color: var(--fg-dim);
}

.progress-pct {
  color: var(--fg);
}

.progress-track {
  height: 4px;
  background: var(--bg);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 120ms linear;
}

.progress-bar.indeterminate {
  width: 30%;
  animation: progress-slide 1.4s ease-in-out infinite;
}

@keyframes progress-slide {
  0% { margin-left: -30%; }
  100% { margin-left: 100%; }
}

.output {
  flex: 1 1 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 0.75rem 1rem;
  overflow: auto;
  white-space: pre-wrap;
  line-height: 1.5;
}

.output .line {
  padding: 0;
}

.output .line.stdout {
  color: var(--fg);
}

.output .line.value {
  color: var(--value);
}

.output .line.value::before {
  content: "= ";
  color: var(--fg-dim);
}

.output .line.error {
  color: var(--error);
}

.output .line.warning {
  color: var(--warning);
}

.output .line.control {
  color: var(--fg-dim);
  font-style: italic;
}

.output .line.input::before {
  content: ">>> ";
  color: var(--fg-dim);
}

.repl-input {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  border-top: 1px solid var(--border);
  padding: 0.5rem 1rem;
  background: var(--panel);
}

.repl-input[hidden] {
  /* HTML's `hidden` attribute means display:none, but our display:flex above
     overrides it. Spell it out so the REPL prompt actually disappears in
     Run-file mode. (Same fix as .progress[hidden].) */
  display: none;
}

.repl-input .prompt {
  font-family: var(--font-mono);
  color: var(--fg-dim);
}

.repl-input input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--fg);
  font: 13px var(--font-mono);
  outline: none;
}