5 Minute Countdown Timer in Javascript

<script type="module" src="https://unpkg.com/ionicons@7.1.0/dist/ionicons/ionicons.esm.js"></script>
<script nomodule src="https://unpkg.com/ionicons@7.1.0/dist/ionicons/ionicons.js"></script>

<div class="container">
  <h1>⏱️ 5 Minute Timer</h1>
  <p class="subtitle">Focus timer for productivity</p>

  <div class="timer-circle">
    <svg class="circle-bg" viewBox="0 0 320 320">
      <defs>
        <linearGradient id="gradient" x1="0%" y1="0%" x2="100%" y2="100%">
          <stop offset="0%" style="stop-color:#e74c3c;stop-opacity:1" />
          <stop offset="100%" style="stop-color:#c0392b;stop-opacity:1" />
        </linearGradient>
      </defs>
      <circle class="circle-bg-path" cx="160" cy="160" r="150"></circle>
      <circle class="circle-progress-path" id="progressCircle" cx="160" cy="160" r="150"></circle>
    </svg>
    <div class="timer-display">
      <div id="timeDisplay">05:00</div>
      <div class="timer-label">MINUTES</div>
    </div>
  </div>

  <div class="controls">
    <button class="btn btn-success" id="startBtn">
      <ion-icon name="play-outline"></ion-icon>
      Start
    </button>
    <button class="btn btn-secondary" id="pauseBtn" disabled>
      <ion-icon name="pause-outline"></ion-icon>
      Pause
    </button>
    <button class="btn btn-secondary" id="resetBtn">
      <ion-icon name="refresh-outline"></ion-icon>
      Reset
    </button>
  </div>

  <div class="preset-buttons">
    <button class="preset-btn" data-time="1">1 min</button>
    <button class="preset-btn" data-time="3">3 min</button>
    <button class="preset-btn" data-time="5">5 min</button>
    <button class="preset-btn" data-time="10">10 min</button>
    <button class="preset-btn" data-time="15">15 min</button>
    <button class="preset-btn" data-time="25">25 min</button>
  </div>

  <div class="status-message" id="statusMessage">
    🎉 Time's Up! Great work!
  </div>
</div>

* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .container {
            background: white;
            border-radius: 30px;
            box-shadow: 0 25px 70px rgba(0, 0, 0, 0.3);
            padding: 60px 50px;
            text-align: center;
            max-width: 600px;
            width: 100%;
        }

        h1 {
            font-size: 32px;
            color: #333;
            margin-bottom: 15px;
            font-weight: 700;
        }

        .subtitle {
            color: #666;
            font-size: 16px;
            margin-bottom: 40px;
        }

        .timer-circle {
            position: relative;
            width: 320px;
            height: 320px;
            margin: 0 auto 40px;
        }

        .circle-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        .circle-progress {
            transform: rotate(-90deg);
            transform-origin: center;
        }

        .circle-bg-path {
            fill: none;
            stroke: #f0f0f0;
            stroke-width: 12;
        }

        .circle-progress-path {
            fill: none;
            stroke: url(#gradient);
            stroke-width: 12;
            stroke-linecap: round;
            transition: stroke-dashoffset 1s linear;
        }

        .timer-display {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 72px;
            font-weight: 700;
            color: #333;
            font-family: 'Courier New', monospace;
            line-height: 1;
        }

        .timer-label {
            font-size: 16px;
            color: #999;
            margin-top: 10px;
            font-weight: 400;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto;
        }

        .controls {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .btn {
            background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 16px 32px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            min-width: 140px;
            justify-content: center;
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(231, 76, 60, 0.4);
        }

        .btn:active {
            transform: translateY(-1px);
        }

        .btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }

        .btn-secondary {
            background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
        }

        .btn-secondary:hover {
            box-shadow: 0 10px 25px rgba(149, 165, 166, 0.4);
        }

        .btn-success {
            background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
        }

        .btn-success:hover {
            box-shadow: 0 10px 25px rgba(39, 174, 96, 0.4);
        }

        .status-message {
            padding: 15px;
            border-radius: 12px;
            margin-top: 20px;
            font-size: 16px;
            font-weight: 600;
            display: none;
            animation: slideIn 0.3s ease;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .status-complete {
            background: #d4edda;
            color: #155724;
            border: 2px solid #c3e6cb;
            display: block;
            animation: pulse 1s infinite;
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.02);
            }
        }

        .preset-buttons {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        .preset-btn {
            background: #f8f9fa;
            color: #333;
            border: 2px solid #e0e0e0;
            border-radius: 25px;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .preset-btn:hover {
            background: #e74c3c;
            color: white;
            border-color: #e74c3c;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .container {
                padding: 40px 30px;
            }

            h1 {
                font-size: 26px;
            }

            .timer-circle {
                width: 260px;
                height: 260px;
            }

            .timer-display {
                font-size: 56px;
            }

            .controls {
                flex-direction: column;
            }

            .btn {
                width: 100%;
            }
        }

        let countdown;
        let totalSeconds = 300; // 5 minutes = 300 seconds
        let remainingSeconds = 300;
        let isPaused = false;
        let isRunning = false;

        const timeDisplay = document.getElementById('timeDisplay');
        const startBtn = document.getElementById('startBtn');
        const pauseBtn = document.getElementById('pauseBtn');
        const resetBtn = document.getElementById('resetBtn');
        const statusMessage = document.getElementById('statusMessage');
        const progressCircle = document.getElementById('progressCircle');
        const presetButtons = document.querySelectorAll('.preset-btn');

        const circumference = 2 * Math.PI * 150;
        progressCircle.style.strokeDasharray = circumference;
        progressCircle.style.strokeDashoffset = 0;

        function formatTime(seconds) {
            const mins = Math.floor(seconds / 60);
            const secs = seconds % 60;
            return `${String(mins).padStart(2, '0')}:${String(secs).padStart(2, '0')}`;
        }

        function updateDisplay() {
            timeDisplay.textContent = formatTime(remainingSeconds);
            updateProgressCircle();
        }

        function updateProgressCircle() {
            const progress = remainingSeconds / totalSeconds;
            const offset = circumference * (1 - progress);
            progressCircle.style.strokeDashoffset = offset;
        }

        function startTimer() {
            if (remainingSeconds === 0) {
                alert('Please reset the timer first');
                return;
            }

            isRunning = true;
            statusMessage.style.display = 'none';
            startBtn.disabled = true;
            pauseBtn.disabled = false;

            countdown = setInterval(() => {
                remainingSeconds--;
                updateDisplay();

                if (remainingSeconds === 0) {
                    clearInterval(countdown);
                    statusMessage.style.display = 'block';
                    startBtn.disabled = false;
                    pauseBtn.disabled = true;
                    isRunning = false;
                    playSound();
                }
            }, 1000);
        }

        function pauseTimer() {
            clearInterval(countdown);
            isPaused = true;
            isRunning = false;
            startBtn.disabled = false;
            pauseBtn.disabled = true;
            startBtn.innerHTML = '<ion-icon name="play-outline"></ion-icon> Resume';
        }

        function resetTimer() {
            clearInterval(countdown);
            remainingSeconds = totalSeconds;
            isPaused = false;
            isRunning = false;
            
            updateDisplay();
            
            startBtn.disabled = false;
            pauseBtn.disabled = true;
            statusMessage.style.display = 'none';
            
            startBtn.innerHTML = '<ion-icon name="play-outline"></ion-icon> Start';
        }

        function setPresetTime(minutes) {
            if (isRunning) {
                if (!confirm('Timer is running. Do you want to change the time?')) {
                    return;
                }
                clearInterval(countdown);
            }
            
            totalSeconds = minutes * 60;
            remainingSeconds = totalSeconds;
            isRunning = false;
            isPaused = false;
            
            updateDisplay();
            
            startBtn.disabled = false;
            pauseBtn.disabled = true;
            statusMessage.style.display = 'none';
            startBtn.innerHTML = '<ion-icon name="play-outline"></ion-icon> Start';
        }

        function playSound() {
            const audioContext = new (window.AudioContext || window.webkitAudioContext)();
            
            // Create three beeps
            for (let i = 0; i < 3; i++) {
                setTimeout(() => {
                    const oscillator = audioContext.createOscillator();
                    const gainNode = audioContext.createGain();

                    oscillator.connect(gainNode);
                    gainNode.connect(audioContext.destination);

                    oscillator.frequency.value = 800;
                    oscillator.type = 'sine';

                    gainNode.gain.setValueAtTime(0.3, audioContext.currentTime);
                    gainNode.gain.exponentialRampToValueAtTime(0.01, audioContext.currentTime + 0.3);

                    oscillator.start(audioContext.currentTime);
                    oscillator.stop(audioContext.currentTime + 0.3);
                }, i * 400);
            }
        }

        startBtn.addEventListener('click', startTimer);
        pauseBtn.addEventListener('click', pauseTimer);
        resetBtn.addEventListener('click', resetTimer);

        presetButtons.forEach(btn => {
            btn.addEventListener('click', () => {
                const minutes = parseInt(btn.getAttribute('data-time'));
                setPresetTime(minutes);
            });
        });

        // Initialize display
        updateDisplay();