:root {
  color-scheme: light dark;
  font-family: system-ui, sans-serif;
}

body {
  margin: 0;
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
}

main {
  max-width: 40rem;
  width: 100%;
}

.prompt {
  border: 1px solid #8884;
  border-radius: 0.5rem;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
}

.thai {
  font-size: 2rem;
  margin: 0 0 0.25rem;
}

.translation {
  font-style: italic;
  margin: 0;
}

.controls {
  display: flex;
  gap: 0.75rem;
}

button {
  font-size: 1rem;
  padding: 0.5rem 1.25rem;
  border-radius: 0.4rem;
  border: 1px solid #8884;
  cursor: pointer;
}

#status {
  min-height: 1.5rem;
  color: #888;
}

.diff {
  font-size: 1.5rem;
}

.word {
  padding: 0 0.15rem;
}

.word.match {
  color: #2e7d32;
}

.word.missing {
  color: #c62828;
  text-decoration: line-through;
}

.word.extra {
  color: #ef6c00;
}

.score {
  font-weight: bold;
  font-size: 1.2rem;
}

footer {
  margin-top: 2.5rem;
  font-size: 0.75rem;
  color: #888;
  text-align: center;
}

footer a {
  color: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

footer img {
  border-radius: 3px;
  vertical-align: middle;
}