body{color:#1d1d1f;background-color:#f5f5f7;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.container{background:#fff;border-radius:12px;max-width:800px;margin:40px auto;padding:20px;box-shadow:0 4px 6px #0000001a}h1{text-align:center}.upload-section{text-align:center;cursor:pointer;border:2px dashed #ccc;border-radius:8px;margin-bottom:20px;padding:40px;transition:background-color .2s}.upload-section:hover{background-color:#fafafa}.api-key-input{border:1px solid #ccc;border-radius:6px;width:100%;margin-bottom:20px;padding:10px;font-size:16px}button{color:#fff;cursor:pointer;background:#007aff;border:none;border-radius:6px;padding:10px 20px;font-size:16px}button:disabled{background:#ccc}