:root{--background-light:#fff;--text-light:#333;--primary-light:#007bff;--secondary-light:#6c757d;--border-light:#dee2e6;--background-dark:#1a1a1a;--text-dark:#fff;--primary-dark:#0056b3;--secondary-dark:#495057;--border-dark:#2d2d2d}.light-theme{--background:var(--background-light);--text:var(--text-light);--primary:var(--primary-light);--secondary:var(--secondary-light);--border:var(--border-light)}.dark-theme{--background:var(--background-dark);--text:var(--text-dark);--primary:var(--primary-dark);--secondary:var(--secondary-dark);--border:var(--border-dark)}body{background-color:var(--background);color:var(--text);transition:background-color .3s,color .3s;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif}body,html{max-width:100vw;overflow-x:hidden}@media (max-width:768px){body,html{overflow-y:auto;height:auto;min-height:100vh}}*{box-sizing:border-box;padding:0;margin:0}a{color:inherit;text-decoration:none}@media (prefers-color-scheme:dark){html{color-scheme:dark}}