:root {
  color-scheme: light dark;
  --fundo: #fafaf9;
  --texto: #1c1917;
  --suave: #57534e;
  --borda: #d6d3d1;
  --destaque: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #1c1917;
    --texto: #f5f5f4;
    --suave: #a8a29e;
    --borda: #44403c;
    --destaque: #60a5fa;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--fundo);
  color: var(--texto);
  font: 16px/1.5 system-ui, sans-serif;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 3rem 1rem;
}

h1 {
  font-size: 1.5rem;
}

textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--borda);
  border-radius: 0.5rem;
  background: transparent;
  color: inherit;
  font: 0.875rem/1.4 ui-monospace, monospace;
  word-break: break-all;
  resize: vertical;
}

button {
  margin-top: 0.75rem;
  padding: 0.6rem 1.1rem;
  border: 0;
  border-radius: 0.5rem;
  background: var(--destaque);
  color: #fff;
  font: inherit;
  cursor: pointer;
}

.nota {
  color: var(--suave);
  font-size: 0.875rem;
}