.app{max-width:1200px;margin:0 auto;padding:20px}.header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:40px;border-radius:10px;margin-bottom:20px;text-align:center}.header h1{font-size:2.5em;margin-bottom:10px}.tagline{font-size:1.1em;opacity:.9}.tabs{display:flex;gap:10px;margin-bottom:20px}.tab{flex:1;padding:15px;border:none;background:#fff;border-radius:8px;cursor:pointer;font-size:16px;font-weight:500;transition:all .3s}.tab:hover{background:#f0f0f0}.tab.active{background:#667eea;color:#fff}.main-content{background:#fff;padding:30px;border-radius:10px;box-shadow:0 2px 10px #0000001a}*{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;background:#f5f5f5;overflow-x:hidden;width:100%;min-height:100vh;position:relative}#root{min-height:100vh;width:100%;position:relative}