Write a C# program that calculates an estimate of the battery drain percentage for a drone flying for a duration between 5 and 45 minutes.

Your program should:

• Keep asking the user to enter a flight duration in minutes until they enter a value that is between 5 and 45 (inclusive).
• Calculate the base battery drain by multiplying the entered duration by 1.8.
• Ask the user if 'sport mode' is enabled (expect the user to enter yes if it is).
• If sport mode is enabled, multiply the calculated battery drain by 1.4.
• Output the final calculated battery drain percentage.

You should use meaningful variable names, correct syntax, and appropriate indentation in your answer.