:root {
  --builder-font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --builder-surface: #ffffff;
}

body {
  font-family: var(--builder-font);
  background: radial-gradient(circle at 15% 20%, #e0f2fe 0, transparent 25%), radial-gradient(circle at 80% 10%, #e9d5ff 0, transparent 22%), #f8fafc;
}

.hero {
  background: linear-gradient(135deg, #0f172a, #111827 45%, #1e293b);
  color: #e2e8f0;
}

.surface-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
}

textarea.mono {
  font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 12px;
  border: 1px solid #1f2937;
  min-height: 260px;
  padding: 14px;
}

.pill {
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid #cbd5e1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.preview-block {
  border: 1px dashed #cbd5e1;
  border-radius: 12px;
  padding: 16px;
  background: #ffffff;
}

.ds-doc {
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 12px;
  background: #ffffff;
}

.ds-doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.ds-doc-card {
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 10px;
  background: #f8fafc;
}

.ds-doc-title {
  font-weight: 700;
  margin-bottom: 6px;
}

#feedback {
  transition: opacity 150ms ease;
}