:root {
  --canvas: #0a0a0b;
  --surface: #111113;
  --elevated: #18181b;
  --hover: #1f1f23;
  --border: #27272a;
  --border-strong: #3f3f46;
  --text: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --ok: #4ade80;
  --warn: #fbbf24;
  --error: #f87171;
  --font-ui: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  --font-code: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--canvas);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.5;
}

button,
select,
input,
textarea {
  font: inherit;
}

button,
a,
select,
input,
textarea {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible,
[role="separator"]:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.app-container {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100dvh;
  min-width: 320px;
  overflow: hidden;
}

.top-bar {
  display: grid;
  grid-template-columns: minmax(max-content, 1fr) minmax(180px, 320px) minmax(max-content, 1fr);
  align-items: center;
  gap: 16px;
  height: 48px;
  padding: 0 16px;
  flex: 0 0 48px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 8px;
  min-width: 0;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
}

.brand-name {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.product-label {
  color: var(--text-muted);
  white-space: nowrap;
}

.example-control {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.example-control label {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.select-input {
  width: 100%;
  min-width: 0;
  height: 30px;
  padding: 0 28px 0 10px;
  color: var(--text-secondary);
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

.select-input:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.actions-group {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 8px;
  min-width: 0;
}

.docs-link {
  color: var(--text);
  text-decoration-line: underline;
  text-decoration-color: var(--border-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.docs-link:hover {
  text-decoration-color: var(--text);
}

.button,
.tool-button,
.repl-send {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
}

.button {
  height: 30px;
  padding: 0 10px;
  gap: 8px;
}

.button:hover:not(:disabled),
.tool-button:hover:not(:disabled),
.repl-send:hover:not(:disabled) {
  color: var(--text);
  background: var(--hover);
  border-color: var(--border-strong);
}

.button-primary {
  min-width: 84px;
  color: var(--canvas);
  background: var(--text);
  border-color: var(--text);
  font-weight: 600;
}

.button-primary:hover:not(:disabled) {
  color: var(--canvas);
  background: #d4d4d8;
  border-color: #d4d4d8;
}

.button:disabled,
.tool-button:disabled,
.repl-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.shortcut-key {
  color: #52525b;
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 400;
}

.workspace {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  background: var(--canvas);
}

.pane {
  display: flex;
  flex: 1 1 50%;
  flex-direction: column;
  min-width: 240px;
  min-height: 0;
  overflow: hidden;
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 36px;
  padding: 0 12px;
  flex: 0 0 36px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  user-select: none;
}

.pane-title {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pane-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.editor-status-text {
  color: var(--text-muted);
  font-family: var(--font-code);
  font-size: 11px;
  white-space: nowrap;
}

.tool-button {
  height: 24px;
  padding: 0 8px;
  font-size: 11px;
}

.resizer {
  position: relative;
  width: 1px;
  flex: 0 0 1px;
  background: var(--border);
  cursor: col-resize;
  touch-action: none;
}

.resizer::before {
  position: absolute;
  inset: 0 -4px;
  content: "";
}

.resizer:hover,
.resizer.dragging {
  background: var(--border-strong);
}

.editor-container {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  background: var(--canvas);
}

.line-numbers {
  width: 52px;
  padding: 16px 12px 16px 8px;
  flex: 0 0 52px;
  overflow: hidden;
  color: #52525b;
  background: var(--canvas);
  border-right: 1px solid var(--border);
  font-family: var(--font-code);
  font-size: 13px;
  font-variant-ligatures: none;
  line-height: 1.6;
  text-align: right;
  white-space: pre;
  tab-size: 2;
  user-select: none;
}

.editor-stage {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.editor-highlight,
.code-editor {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 16px;
  overflow: auto;
  border: 0;
  border-radius: 0;
  outline: 0;
  font-family: var(--font-code);
  font-size: 13px;
  font-style: normal;
  font-variant-ligatures: none;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.6;
  tab-size: 2;
  text-align: left;
  text-indent: 0;
  text-transform: none;
  white-space: pre;
  word-break: normal;
  word-spacing: 0;
  overflow-wrap: normal;
}

.editor-highlight {
  z-index: 1;
  pointer-events: none;
  color: var(--text);
  background: transparent;
  scrollbar-width: none;
}

.editor-highlight::-webkit-scrollbar {
  display: none;
}

.editor-highlight code {
  display: block;
  min-width: max-content;
  min-height: 100%;
  font: inherit;
  white-space: inherit;
}

.code-editor {
  z-index: 2;
  resize: none;
  color: transparent;
  background: transparent;
  caret-color: var(--text);
  -webkit-text-fill-color: transparent;
}

.code-editor::selection {
  background: rgba(161, 161, 170, 0.3);
  -webkit-text-fill-color: transparent;
}

.code-editor:disabled {
  cursor: not-allowed;
}

.token.comment {
  color: #52525b;
  font-style: italic;
}

.token.string,
.token.raw-string,
.token.template-string {
  color: #9cc9ff;
}

.token.interpolation,
.token.interpolation .token {
  color: #c7d2e0;
  font-style: normal;
  font-weight: 400;
}

.token.keyword {
  color: #ffffff;
  font-weight: 600;
}

.token.number,
.token.boolean,
.token.constant {
  color: #b8c8e0;
}

.token.function,
.token.builtin {
  color: #e4e4e7;
}

.token.hook {
  color: #e4e4e7;
  font-weight: 600;
}

.token.type,
.token.class-name,
.token.namespace {
  color: #d4d4d8;
  font-style: italic;
}

.token.attribute,
.token.attr-name {
  color: #71717a;
}

.token.operator {
  color: #a1a1aa;
}

.token.punctuation,
.token.interpolation-punctuation,
.token.template-punctuation {
  color: #71717a;
}

.output-pane {
  background: var(--canvas);
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  border-radius: 50%;
  background: var(--warn);
}

.status-indicator.ready .status-dot {
  background: var(--ok);
}

.status-indicator.error .status-dot {
  background: var(--error);
}

.status-indicator.running .status-dot {
  background: var(--warn);
}

.status-indicator.ready .status-text {
  color: var(--text-secondary);
}

.status-indicator.error .status-text {
  color: var(--error);
}

.output-container {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 16px;
  background: var(--canvas);
}

.output-log {
  min-width: 100%;
  margin: 0;
  color: var(--text);
  font-family: var(--font-code);
  font-size: 13px;
  font-variant-ligatures: none;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.repl-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  margin: 0;
  padding: 8px 12px;
  flex: 0 0 auto;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.repl-prompt-symbol {
  color: var(--text-muted);
  font-family: var(--font-code);
  font-size: 18px;
  line-height: 1;
  user-select: none;
}

.repl-input {
  min-width: 0;
  height: 30px;
  padding: 0;
  flex: 1 1 auto;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: 0;
  outline: 0;
  font-family: var(--font-code);
  font-size: 13px;
}

.repl-input::placeholder {
  color: #52525b;
}

.repl-input:disabled {
  color: var(--text-muted);
  cursor: not-allowed;
}

.repl-send {
  height: 28px;
  padding: 0 9px;
  font-size: 11px;
}

.ansi-red,
.ansi-green,
.ansi-yellow,
.ansi-blue,
.ansi-purple,
.ansi-cyan,
.ansi-bright {
  color: inherit;
}

.output-error,
.output-error .ansi-red,
.output-error .ansi-green,
.output-error .ansi-yellow,
.output-error .ansi-blue,
.output-error .ansi-purple,
.output-error .ansi-cyan,
.output-error .ansi-bright {
  color: var(--error);
}

.repl-echo {
  color: var(--text-muted);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border: 3px solid var(--canvas);
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

@media (max-width: 760px) {
  .top-bar {
    grid-template-columns: 1fr auto;
    grid-template-rows: 47px 43px;
    gap: 0 12px;
    height: 91px;
    padding: 0 12px;
    flex-basis: 91px;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .actions-group {
    grid-column: 2;
    grid-row: 1;
    gap: 6px;
  }

  .example-control {
    grid-column: 1 / -1;
    grid-row: 2;
    align-self: start;
  }

  .example-control label {
    width: 58px;
    flex: 0 0 58px;
  }

  .shortcut-key {
    display: none;
  }

  .product-label {
    font-size: 11px;
  }

  .docs-link,
  .button {
    font-size: 12px;
  }

  .button {
    height: 28px;
    padding: 0 8px;
  }

  .button-primary {
    min-width: 48px;
  }

  .workspace {
    flex-direction: column;
  }

  .pane {
    min-width: 0;
    min-height: 160px;
  }

  .editor-pane {
    flex: 1 1 52%;
  }

  .output-pane {
    flex: 1 1 48%;
  }

  .resizer {
    width: 100%;
    height: 1px;
    flex: 0 0 1px;
    cursor: row-resize;
  }

  .resizer::before {
    inset: -4px 0;
  }

  .line-numbers {
    width: 44px;
    padding: 12px 8px 12px 4px;
    flex-basis: 44px;
  }

  .editor-highlight,
  .code-editor,
  .output-container {
    padding: 12px;
  }

  .repl-bar {
    min-height: 44px;
    padding: 6px 10px;
  }
}

@media (max-width: 390px) {
  .top-bar {
    gap: 0 8px;
    padding: 0 10px;
  }

  .actions-group {
    gap: 5px;
  }

  .docs-link,
  .button {
    font-size: 11px;
  }

  .button {
    padding: 0 6px;
  }

  .button-primary {
    min-width: 42px;
  }

  .brand {
    gap: 6px;
  }

  .brand-name {
    font-size: 13px;
  }

  .product-label {
    font-size: 10px;
  }

  .brand-mark {
    width: 20px;
    height: 20px;
  }

  .editor-status-text {
    font-size: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}