:root {
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-primary-light: #eef2ff;
  --color-primary-bg: rgba(99,102,241,0.08);
  --color-success: #10b981;
  --color-success-bg: rgba(16,185,129,0.1);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245,158,11,0.1);
  --color-danger: #ef4444;
  --color-danger-bg: rgba(239,68,68,0.1);
  --color-info: #3b82f6;
  --color-info-bg: rgba(59,130,246,0.1);
  --color-bg: #fafafa;
  --color-bg-card: #ffffff;
  --color-bg-hover: #f5f5f5;
  --color-bg-sidebar: #ffffff;
  --color-bg-overlay: rgba(0,0,0,0.4);
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  --transition-fast: 0.15s ease;
  --transition: 0.2s ease;
  --transition-slow: 0.3s ease;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Fira Code", Consolas, "Liberation Mono", monospace;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal-backdrop: 300;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
}

[data-theme="dark"] {
  --color-bg: #1a1a2e;
  --color-bg-card: #16213e;
  --color-bg-hover: #1e293b;
  --color-bg-sidebar: #16213e;
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-border: #334155;
  --color-border-light: #1e293b;
  --color-primary-light: #312e81;
  --color-primary-bg: rgba(99,102,241,0.15);
  --color-success-bg: rgba(16,185,129,0.15);
  --color-warning-bg: rgba(245,158,11,0.15);
  --color-danger-bg: rgba(239,68,68,0.15);
  --color-info-bg: rgba(59,130,246,0.15);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.3);
}