.App{text-align:center;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.App-header{color:#fff}.App-header h1{font-size:4rem;margin:0;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.App-header p{font-size:1.5rem;margin:1rem 0}.subtitle{font-size:1rem!important;opacity:.9;font-family:monospace}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}