:root {
  --bg: #1e2127;
  --panel: #282c34;
  --border: #3a3f4b;
  --text: #d7dae0;
  --muted: #8b93a3;
  --accent: #e5a54b;
  --accent-text: #1e2127;
  --stdout: #7fd1e0;
  --stderr: #f08c8c;
  --result: #d7dae0;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.topbar {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}

.topbar h1 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.tagline { color: var(--muted); font-size: 13px; }

.topbar nav { margin-left: auto; }

.topbar a { color: var(--accent); text-decoration: none; }
.topbar a:hover { text-decoration: underline; }

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

.pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.editor-pane { flex: 3; border-right: 1px solid var(--border); }
.output-pane { flex: 2; background: var(--panel); }

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

.editor .cm-editor { height: 100%; font-size: 14px; }
.editor .cm-scroller { font-family: var(--mono); }

.toolbar, .pane-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-top: 1px solid var(--border);
}

.pane-header {
  border-top: 0;
  border-bottom: 1px solid var(--border);
  justify-content: space-between;
  color: var(--muted);
}

.hint { margin-right: auto; color: var(--muted); font-size: 12px; }

.examples { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
.examples select {
  padding: 4px 8px;
  background: var(--panel);
  font-size: 13px;
}
.examples select option, .examples select optgroup { background: var(--panel); color: var(--text); }

.btn {
  font: inherit;
  padding: 5px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.btn:hover { border-color: var(--muted); }
.btn-small { padding: 2px 10px; font-size: 12px; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.08); }
.btn[disabled] { opacity: 0.5; cursor: progress; }
/* Room for "Copied!" so the toolbar doesn't shift when the label changes */
#share { min-width: 7.5em; }
#share.flash { border-color: var(--accent); color: var(--accent); }
.btn.loading { opacity: 0.7; cursor: progress; }

.output {
  flex: 1;
  overflow: auto;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 13px;
}

.out-block { padding: 6px 0; border-bottom: 1px dashed var(--border); }
.out-block:empty { display: none; }
.output pre { margin: 0; white-space: pre-wrap; word-break: break-word; font: inherit; }
.out-stdout { color: var(--stdout); }
.out-stderr { color: var(--stderr); }
.out-result { color: var(--result); }

@media (max-width: 760px) {
  .panes { flex-direction: column; }
  .editor-pane { border-right: 0; border-bottom: 1px solid var(--border); flex: 3; }
  .output-pane { flex: 2; }
  .hint { display: none; }
  .toolbar { justify-content: flex-end; }
  .examples { margin-right: auto; }
  .examples > span { display: none; }
}