.oj-runner {
  border: 1px solid #d8dee9;
  border-radius: 8px;
  margin: 16px 0;
  overflow: hidden;
  background: #ffffff;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.oj-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border-bottom: 1px solid #e5e7eb;
  background: #f8fafc;
}

.oj-toolbar button {
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  background: #fff;
  color: #0f172a;
  padding: 6px 10px;
  cursor: pointer;
}

.oj-toolbar button:disabled {
  cursor: wait;
  opacity: 0.6;
}

.oj-status {
  margin-left: auto;
  color: #475569;
  font-size: 13px;
}

.oj-editor {
  box-sizing: border-box;
  width: 100%;
  min-height: 180px;
  border: 0;
  border-bottom: 1px solid #e5e7eb;
  padding: 12px;
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
}

.oj-output {
  margin: 0;
  min-height: 72px;
  padding: 12px;
  background: #0f172a;
  color: #e2e8f0;
  overflow: auto;
  white-space: pre-wrap;
}

.oj-output.error {
  color: #fecaca;
}