:root{--bg-primary: #f0f2f5;--bg-secondary: #ffffff;--bg-sidebar: #1e293b;--text-primary: #1e293b;--text-secondary: #64748b;--text-sidebar: #cbd5e1;--border-color: #e2e8f0;--card-bg: #ffffff;--accent: #667eea;--accent-hover: #5a6fd8;--danger: #ef4444;--success: #10b981;--warning: #f59e0b}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-sidebar: #0f172a;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-sidebar: #cbd5e1;--border-color: #334155;--card-bg: #1e293b;--accent: #818cf8;--accent-hover: #6366f1}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);transition:background .3s,color .3s}#app{min-height:100vh}