body {
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  margin: 0;
  padding: 24px;
}

main {
  max-width: 1100px;
  margin: 0 auto;
}

.card {
  background: #111827;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

input,
textarea,
button {
  width: 100%;
  margin: 6px 0;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #475569;
  background: #1e293b;
  color: #e2e8f0;
  box-sizing: border-box;
}

button {
  cursor: pointer;
  background: #2563eb;
  border-color: #1d4ed8;
}

pre {
  white-space: pre-wrap;
  background: #020617;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 12px;
  max-height: 360px;
  overflow: auto;
}

a {
  color: #93c5fd;
}