.App{text-align:center;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.App-header{padding:2rem}h1{font-size:3rem;margin-bottom:1rem}.card{margin-top:2rem}button{background:#fff;color:#667eea;border:none;padding:1rem 2rem;font-size:1.2rem;border-radius:8px;cursor:pointer;font-weight:700;transition:transform .2s}button:hover{transform:scale(1.05)}*{margin:0;padding:0;box-sizing:border-box}body{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}