Monochrome Stopwatch

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Monochrome Stopwatch</title>
    <style>
        body {
            font-family: 'Poppins', sans-serif;
            background: #000;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            color: #fff;
        }
        .stopwatch {
            background: #1e1e1e;
            border-radius: 10px;
            padding: 40px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            color: #fff;
        }
        .stopwatch .time {
            font-size: 3rem;
            margin-bottom: 20px;
            color: #ccc;
        }
        .stopwatch .buttons {
            display: flex;
            justify-content: space-between;
        }
        .stopwatch button {
            background: #ccc;
            border: none;
            border-radius: 5px;
            color: #000;
            font-size: 1rem;
            padding: 10px 20px;
            cursor: pointer;
            transition: background 0.3s, transform 0.3s;
        }
        .stopwatch button:hover {
            background: #bbb;
        }
        .stopwatch button:active {
            transform: scale(0.95);
        }
        .stopwatch button:focus {
            outline: none;
        }
    </style>
</head>
<body>
    <div class="stopwatch">
        <div class="time">00:00:00</div>
        <div class="buttons">
            <button type="button" class="start-btn">Start ⏱️</button>&nbsp;&nbsp;&nbsp;
            <button type="button" class="reset-btn">Reset 🔄</button>
        </div>
    </div>
    <script>
        let timeDisplay = document.querySelector('.time');
        let startBtn = document.querySelector('.start-btn');
        let resetBtn = document.querySelector('.reset-btn');
        let intervalId;
        let elapsedTime = 0;
        let running = false;
        startBtn.addEventListener('click', function() {
            if (!running) {
                intervalId = setInterval(() => {
                    elapsedTime += 10;
                    let date = new Date(elapsedTime);
                    let minutes = String(date.getMinutes()).padStart(2, '0');
                    let seconds = String(date.getSeconds()).padStart(2, '0');
                    let milliseconds = String(date.getMilliseconds()).padStart(3, '0').slice(0, -1);
                    timeDisplay.textContent = `${minutes}:${seconds}:${milliseconds}`;
                }, 10);
                running = true;
                startBtn.textContent = 'Pause ⏸️';
            } else {
                clearInterval(intervalId);
                running = false;
                startBtn.textContent = 'Start ⏱️';
            }
        });
        resetBtn.addEventListener('click', function() {
            clearInterval(intervalId);
            elapsedTime = 0;
            timeDisplay.textContent = '00:00:00';
            running = false;
            startBtn.textContent = 'Start ⏱️';
        });
    </script>
</body>
</html>

Monochrome Stopwatch - MeggiTools