:root {
  --bg: #f1f5f9;
  --bg-card: #ffffff;
  --bg-input: #f8fafc;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --success: #22c55e;
  --success-hover: #16a34a;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --row-hover: #f1f5f9;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
}
[data-theme="dark"] {
  --bg: #0b1220;
  --bg-card: #131c2e;
  --bg-input: #0b1220;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #1e293b;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --success: #4ade80;
  --success-hover: #22c55e;
  --danger: #f87171;
  --danger-hover: #ef4444;
  --row-hover: #1e293b;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.5);
}