:root{--primary-color:#e31a1c;--secondary-color:#2c3e50;--text-color:#fff;--bg-color:#1a1a1a;--gradient-start:#e31a1c;--gradient-end:#ff5252}*{box-sizing:border-box;margin:0;padding:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body{background-color:var(--bg-color);color:var(--text-color);justify-content:center;align-items:center;min-height:100vh;display:flex}