body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.container{flex-direction:column;justify-content:center;align-items:center;gap:1rem;padding:20px;display:flex}.import-grid{align-items:stretch;width:min(1200px,100%)}.card{background:#fff;border-radius:8px;width:100%;max-width:720px;padding:2rem;box-shadow:0 4px 6px #0000001a}h2{color:#333;text-align:center;margin-bottom:1rem}h3{color:#333;margin:0 0 .75rem}p{color:#666;text-align:center;margin-bottom:2rem}fieldset{border:1px solid #ddd;border-radius:4px;justify-content:space-between;margin-bottom:1rem;padding:1rem;display:flex}.field-stack{flex-direction:column;align-items:flex-start;gap:.75rem}.field-stack label{font-weight:600}.field-stack input,.field-stack select,.text-input{box-sizing:border-box;width:100%;min-height:42px;font:inherit;border:1px solid #c9ced6;border-radius:6px;padding:.75rem}.checkbox-fieldset{padding:.75rem 1rem}.checkbox-row{color:#22303d;align-items:center;gap:.75rem;width:100%;font-weight:600;display:flex}.checkbox-row input{width:18px;height:18px}small{color:#5f6b76;text-align:left}button{color:#fff;cursor:pointer;background-color:#007bff;border:none;border-radius:4px;width:100%;margin-bottom:1rem;padding:12px 24px;font-size:16px;transition:background-color .3s}button:hover:not(:disabled){background-color:#0056b3}button:disabled{cursor:not-allowed;background-color:#6c757d}button.loading{position:relative}button.loading:after{content:"";border:2px solid #0000;border-top-color:#fff;border-radius:50%;width:16px;height:16px;animation:1s linear infinite spin;position:absolute;top:50%;right:12px;transform:translateY(-50%)}@keyframes spin{0%{transform:translateY(-50%)rotate(0)}to{transform:translateY(-50%)rotate(360deg)}}.message{border-radius:4px;margin-bottom:1rem;padding:12px;font-size:14px}.message.success{color:#155724;background-color:#d4edda;border:1px solid #c3e6cb}.message.error{color:#721c24;background-color:#f8d7da;border:1px solid #f5c6cb}.message.warning{color:#7b5b00;background-color:#fff4d6;border:1px solid #f2d48a}.result-panel{text-align:left;background:#f7f9fb;border:1px solid #dde5ec;border-radius:8px;margin-top:1rem;padding:1rem}.result-meta{text-align:left;margin:0 0 .75rem}.summary-grid{color:#22303d;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.75rem;margin-bottom:1rem;display:grid}@media (width<=768px){.container{padding:16px}.card{padding:1.25rem}}.App{text-align:center;background-color:#f5f5f5;min-height:100vh}.nav-tabs{background:#f8f8f8;border-bottom:1px solid #d8d8d8;justify-content:center;gap:8px;padding:16px;display:flex}.nav-tab{color:#6c757d;padding:10px 16px;font-weight:600;text-decoration:none;display:inline-block}.nav-tab:hover{color:#333}.nav-tab-active{color:#333;border-bottom:2px solid #007bff}