body,html{padding:0;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}a{color:inherit;text-decoration:none}*{box-sizing:border-box}.card{background:white;border-radius:12px;padding:2rem;box-shadow:0 10px 30px rgba(0,0,0,.2);margin:1rem 0}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:#333}.form-control{width:100%;padding:.75rem;border:2px solid #e1e8ed;border-radius:8px;font-size:1rem;transition:border-color .3s}.form-control:focus{outline:none;border-color:#667eea}.btn{padding:.75rem 2rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;display:inline-flex;align-items:center;gap:.5rem}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:white}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 5px 15px rgba(102,126,234,.4)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:#6c757d;color:white}.btn-secondary:hover{background:#5a6268}.alert{padding:1rem;border-radius:8px;margin:1rem 0}.alert-success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.alert-error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.alert-warning{background:#fff3cd;color:#856404;border:1px solid #ffeeba}.spinner{border:3px solid #f3f3f3;border-top-color:#667eea;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:2rem auto}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.result-box{background:#f8f9fa;border:1px solid #dee2e6;border-radius:8px;padding:1rem;margin-top:1rem;max-height:400px;overflow-y:auto;white-space:pre-wrap;word-wrap:break-word}.file-input-wrapper{position:relative;overflow:hidden;display:inline-block;width:100%}.file-input-wrapper input[type=file]{position:absolute;left:-9999px}.file-input-label{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:1rem;background:#f8f9fa;border:2px dashed #dee2e6;border-radius:8px;cursor:pointer;transition:all .3s}.file-input-label:hover{background:#e9ecef;border-color:#667eea}.badge{display:inline-block;padding:.25rem .5rem;font-size:.875rem;font-weight:600;border-radius:4px;margin:.25rem}.badge-primary{background:#667eea;color:white}.badge-info{background:#17a2b8;color:white}.badge-warning{background:#ffc107;color:#212529}