function isEven(num) {
    return num % 2 === 0;
}

function isPrime(num) {
    if (num <= 1) return false;

    for (let i = 2; i <= Math.sqrt(num); i++) {
        if (num % i === 0) return false;
    }

    return true;
}

function generateAnalysis(num) {
    let output = "";
    let evenCount = 0;
    let oddCount = 0;
    let primeCount = 0;

    for (let i = 1; i <= num; i++) {

        if (isEven(i)) {
            output += i + " - Even";
            evenCount++;
        } else {
            output += i + " - Odd";
            oddCount++;
        }

        if (isPrime(i)) {
            output += " | Prime";
            primeCount++;
        }

        output += "<br>";
    }

    output += "<br><strong>Total Even Numbers: " + evenCount + "</strong><br>";
    output += "<strong>Total Odd Numbers: " + oddCount + "</strong><br>";
    output += "<strong>Total Prime Numbers: " + primeCount + "</strong>";

    return output;
}

function handleAnalyze() {
    let num = document.getElementById("numberInput").value;

    if (num <= 0) {
        document.getElementById("output").innerHTML = "⚠️ Enter a valid number";
        return;
    }

    let result = generateAnalysis(num);
    document.getElementById("output").innerHTML = result;
}