body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}
h1, h2 {
  margin-top: 0;
}
.grid, .charts {
  display: grid;
  gap: 16px;
}
.grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin: 20px 0;
}
.charts {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.card {
  background: #1e293b;
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.metric-value {
  font-size: 28px;
  font-weight: bold;
  margin-top: 8px;
}
pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.5;
}
canvas {
  background: #fff;
  border-radius: 8px;
  padding: 8px;
}
.controls-card {
  margin-top: 20px;
}
.controls-row,
.controls-grid {
  display: grid;
  gap: 12px;
  margin: 12px 0;
}
.controls-row {
  grid-template-columns: repeat(auto-fit, minmax(120px, max-content));
}
.controls-grid {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.controls-grid label,
.controls-row label {
  display: grid;
  gap: 6px;
}
input {
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 8px 10px;
  background: #0f172a;
  color: #e2e8f0;
}
button {
  background: #2563eb;
  color: white;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
}
button:hover {
  background: #1d4ed8;
}
.hidden {
  display: none;
}
.source-status {
  margin-top: 10px;
  color: #93c5fd;
  font-size: 14px;
}
.method-description {
  color: #475569;
  font-size: 14px;
  line-height: 1.5;
  margin: 0 0 12px;
}
.inline-metrics {
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.5;
}
.inline-metrics .mini {
  background: #0f172a;
  border-radius: 10px;
  padding: 10px 12px;
}
.inline-metrics .label {
  color: #94a3b8;
  font-size: 12px;
}
.inline-metrics .value {
  font-weight: bold;
  margin-top: 4px;
}