body {
  margin: 0;
  background: #f3f4f6;
  color: #111827;
  font-family: Arial, sans-serif;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.header {
  margin-bottom: 16px;
}

.muted {
  color: #4b5563;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
}

.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 12px;
}

.row,
.grid-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
}

input,
select,
button {
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 14px;
}

button {
  background: #111827;
  color: #ffffff;
  cursor: pointer;
}

pre {
  margin: 0;
  max-height: 320px;
  overflow: auto;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 10px;
  font-size: 12px;
}

.status {
  margin: 10px 0 0;
  font-size: 13px;
}