:root {
      /* Light Theme */
      --bg-primary: #ffffff;
      --bg-secondary: #f8fafc;
      --bg-tertiary: #f1f5f9;
      --text-primary: #1e293b;
      --text-secondary: #475569;
      --text-muted: #94a3b8;
      --border-color: #e2e8f0;
      --accent-primary: #3b82f6;
      --accent-secondary: #8b5cf6;
      --accent-tertiary: #f59e0b;
      --success: #10b981;
      --warning: #f59e0b;
      --error: #ef4444;
      --glass-bg: rgba(255, 255, 255, 0.8);
      --glass-border: rgba(255, 255, 255, 0.2);
      --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
      --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
      --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
      --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
      --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
      --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    }

    /* Dark Theme */
    [data-theme="dark"] {
      --bg-primary: #0f172a;
      --bg-secondary: #1e293b;
      --bg-tertiary: #334155;
      --text-primary: #f8fafc;
      --text-secondary: #cbd5e1;
      --text-muted: #64748b;
      --border-color: #334155;
      --accent-primary: #60a5fa;
      --accent-secondary: #a78bfa;
      --accent-tertiary: #fbbf24;
      --glass-bg: rgba(15, 23, 42, 0.8);
      --glass-border: rgba(255, 255, 255, 0.1);
      --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
      --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
      --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
      --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
      --gradient-primary: linear-gradient(135deg, #4338ca 0%, #7c3aed 100%);
      --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
      --gradient-hero: linear-gradient(135deg, #1e40af 0%, #7c2d12 100%);
    }