/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  
  /* Text Colors */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  
  /* Border & Shadows */
  --border-color: #e2e8f0;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition: all 0.2s ease;
}