.app{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:20px;background:linear-gradient(135deg,#667eea,#764ba2)}h1{color:#fff;font-size:2.5rem;margin-bottom:3rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.button-container{display:flex;gap:20px;flex-wrap:wrap;justify-content:center}.color-button{padding:20px 40px;font-size:1.2rem;font-weight:700;border:none;border-radius:10px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0000004d;color:#fff;text-transform:uppercase;letter-spacing:1px}.color-button:hover{transform:translateY(-5px);box-shadow:0 6px 12px #0006}.color-button:active{transform:translateY(-2px)}.color-button.red{background-color:#e74c3c}.color-button.red:hover{background-color:#c0392b}.color-button.blue{background-color:#3498db}.color-button.blue:hover{background-color:#2980b9}.color-button.green{background-color:#2ecc71}.color-button.green:hover{background-color:#27ae60}.color-button.yellow{background-color:#f1c40f;color:#333}.color-button.yellow:hover{background-color:#f39c12}.color-button.purple{background-color:#9b59b6}.color-button.purple:hover{background-color:#8e44ad}*{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}#root{width:100%;min-height:100vh}