:root{--bg-primary:#f5f5f5;--bg-card:#2e0909;--text-primary:#111;--text-secondary:#666;--border-color:#e5e7eb}.dark{--bg-primary:#111;--bg-card:#1a0505;--text-primary:#fff;--text-secondary:#aaa;--border-color:#333}*{box-sizing:border-box;margin:0;padding:0}body{transition:background-color .3s ease}