.serial-number-container{width:100%;max-width:600px;margin:0 auto;padding:20px;background-color:#f9f9f9;border-radius:8px;box-shadow:0 4px 8px rgb(0 0 0 / .1)}.serial-number-form{direction:rtl;text-align:right}.form-group{margin-bottom:20px}.form-group label{font-size:18px;margin-bottom:10px;display:block;color:#333;font-family:'iranyekan'}.form-group input[type="text"]{width:100%;padding:12px;font-size:16px;border:1px solid #ccc;border-radius:5px;box-sizing:border-box;transition:border-color 0.3s ease}.form-group input[type="text"]:focus{border-color:#4CAF50;outline:none}.form-group input[type="submit"]{background-color:#4CAF50;color:#fff;font-size:18px;padding:12px 20px;border:none;border-radius:5px;cursor:pointer;width:100%;box-sizing:border-box;transition:background-color 0.3s ease}.form-group input[type="submit"]:hover{background-color:#45a049}#serial-number-response{margin-top:20px;padding:20px;border-radius:8px;background-color:#f1f1f1;display:none;font-size:16px;color:#333}#serial-number-response.success{background-color:#e0f7e0;border:1px solid #4CAF50}#serial-number-response.error{background-color:#f8d7da;border:1px solid #e53e3e}#serial-number-response p{margin:0;padding:5px 0}#serial-number-response.loading{text-align:center;font-size:18px;color:#555}#serial-number-response.loading::before{content:'در حال بررسی...'}