:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  box-sizing: border-box;
}

main {
  max-width: 34rem;
}

h1 {
  font-size: 1.4rem;
  margin: 0 0 0.75rem;
}

[lang="vi"] {
  opacity: 0.75;
}

.destination code {
  font-size: 1.1rem;
  word-break: break-all;
}

button {
  font: inherit;
  padding: 0.6rem 1.2rem;
  border-radius: 0.5rem;
  border: 1px solid currentColor;
  cursor: pointer;
}