* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #0d1117;
  color: #c9d1d9;
  line-height: 1.6;
}
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}
header {
  text-align: center;
  margin-bottom: 2rem;
}
h1 {
  font-size: 1.8rem;
  color: #58a6ff;
}
.sandbox-badge {
  display: inline-block;
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 20px;
  padding: 0.2rem 1rem;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: #8b949e;
}
.status-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}
.card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 1.2rem;
}
.card h2 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}
.status.ok { color: #3fb950; }
.status.warn { color: #d29922; }
.status.checking { color: #8b949e; }
.api-section {
  margin: 2rem 0;
}
.api-controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.api-controls button {
  background: #21262d;
  border: 1px solid #30363d;
  color: #c9d1d9;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}
.api-controls button:hover {
  background: #30363d;
}
#api-result {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 1rem;
  min-height: 100px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.85rem;
  white-space: pre-wrap;
  overflow-x: auto;
}
.info {
  margin-top: 2rem;
  padding: 1rem;
  border: 1px solid #30363d;
  border-radius: 8px;
  font-size: 0.9rem;
}
.info p { margin-bottom: 0.5rem; }