:root {
  color-scheme: light;
  font-family: Arial, sans-serif;
}
body {
  margin: 0;
  background: #f3f4f6;
  color: #111827;
}
header {
  background: #0f172a;
  color: #fff;
  padding: 16px 20px;
}
main {
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}
.card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 12px;
}
form {
  display: grid;
  gap: 8px;
}
label {
  display: grid;
  font-size: 14px;
  gap: 4px;
}
input, select, button {
  padding: 8px;
  border-radius: 6px;
  border: 1px solid #d1d5db;
}
button {
  cursor: pointer;
  background: #111827;
  color: #fff;
}
button:hover { opacity: 0.9; }
.row { display: flex; gap: 8px; align-items: center; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { border: 1px solid #e5e7eb; padding: 6px; text-align: left; }
pre {
  background: #111827;
  color: #e5e7eb;
  padding: 8px;
  border-radius: 6px;
  max-height: 260px;
  overflow: auto;
  white-space: pre-wrap;
}