.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif}.app-header{text-align:center;padding:2rem}.app-header h1{font-size:3rem;margin-bottom:1rem}.app-header p{font-size:1.2rem;opacity:.9}.app-header .info{margin-top:2rem;padding:1rem 2rem;background:#ffffff1a;border-radius:8px;font-size:1rem}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}