index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>TCO Calculator</title>
    <link rel="stylesheet" href="styles.css">
</head>
<body>
    <div class="container">
        <h1>Total Cost of Ownership (TCO) Calculator</h1>
        
        <form id="tco-form">
            <div class="input-group">
                <label for="initial-costs">Initial Costs ($):</label>
                <input type="number" id="initial-costs" required>
            </div>
            <div class="input-group">
                <label for="ongoing-costs">Ongoing Costs ($/year):</label>
                <input type="number" id="ongoing-costs" required>
            </div>
            <div class="input-group">
                <label for="indirect-costs">Indirect Costs ($):</label>
                <input type="number" id="indirect-costs" required>
            </div>
            <div class="input-group">
                <label for="direct-costs">Direct Costs ($):</label>
                <input type="number" id="direct-costs" required>
            </div>
            <div class="input-group">
                <label for="depreciation">Depreciation ($/year):</label>
                <input type="number" id="depreciation" required>
            </div>
            <div class="input-group">
                <label for="years">Number of Years:</label>
                <input type="number" id="years" required>
            </div>
            <button type="button" onclick="calculateTCO()">Calculate TCO</button>
        </form>

        <div id="result">
            <h2>Total Cost of Ownership: $<span id="tco-value">0</span></h2>
        </div>
    </div>
    <script src="script.js"></script>
</body>
</html>