.app{min-height:100vh}*{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-color:#f5f5f5}#root{max-width:1200px;margin:0 auto;padding:2rem}h1{color:#333;margin-bottom:1rem}h2{color:#555;margin-top:1.5rem;margin-bottom:.75rem;font-size:1.25rem}.upload-section{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;margin-bottom:1.5rem}.file-input-wrapper{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.file-input{padding:.5rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.info-section{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;margin-bottom:1.5rem}.info-grid{display:grid;grid-template-columns:auto 1fr;gap:.5rem 1rem;margin-bottom:1rem}.info-label{font-weight:600;color:#666}.info-value{color:#333}.warning{background-color:#fff3cd;color:#856404;padding:.75rem;border-radius:4px;border:1px solid #ffeeba;margin-top:1rem}.controls-section{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;margin-bottom:1.5rem}.control-group{margin-bottom:1rem}.control-group label{display:block;font-weight:600;color:#666;margin-bottom:.5rem}.control-group input[type=number]{width:150px;padding:.5rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.control-group .help-text{font-size:.875rem;color:#888;margin-top:.25rem}.chart-section,.placeholder-section{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;margin-bottom:1.5rem}.placeholder-list{list-style:none;padding:0}.placeholder-list li{padding:.5rem 0;color:#999;font-style:italic}.error{background-color:#f8d7da;color:#721c24;padding:.75rem;border-radius:4px;border:1px solid #f5c6cb;margin-top:1rem}