body {
  font-family: ui-sans-serif, system-ui, sans-serif;
  margin: 0;
  background: #f3f4f6;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

.card {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 8px;
}

input {
  width: 100%;
  padding: 8px;
  margin-top: 4px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  box-sizing: border-box;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 8px 12px;
  background: #111827;
  color: white;
  cursor: pointer;
  margin-right: 8px;
}

pre {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 12px;
  overflow: auto;
}

.row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.row h2 {
  margin-right: auto;
}

.hidden {
  display: none;
}