.app{min-height:100vh;background-color:#f9fafb}.app-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem 0;text-align:center;margin-bottom:2rem}.app-header h1{font-size:2.5rem;font-weight:700;margin:0}.app-header p{font-size:1.1rem;opacity:.9;margin:.5rem 0 0}@tailwind base;@tailwind components;@tailwind utilities;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}