:root {
  --primary: #5349b6;
  --bg: #f7f7fb;
  --text: #222;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

textarea {
  width: 100%;
  height: 120px;
  padding: 0.5rem;
  resize: vertical;
  font-family: monospace;
  border: 1px solid #ddd;
  border-radius: 4px;
}

button#run {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 0.6rem 1.2rem;
  margin: 0.5rem 0 1rem;
  border-radius: 4px;
  cursor: pointer;
}

.results {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.panel {
  flex: 1 1 45%;
  background: #fff;
  border: 1px solid #e3e3e3;
  padding: 0.8rem;
  border-radius: 4px;
}

.panel h2 {
  margin-top: 0;
  color: var(--primary);
}

pre.tokenised {
  white-space: pre-wrap;
  word-wrap: break-word;
  border: 1px solid #eee;
  padding: 0.5rem;
  border-radius: 4px;
  min-height: 120px;
}

.tkn {
  padding: 1px 2px;
  border-radius: 3px;
}

@media (max-width: 640px) {
  .panel {
    flex: 1 1 100%;
  }
}