javascript sound wave animation

 <div class="container">
        <h1>SOUND WAVE</h1>
        <div class="wave-container" id="waveContainer">
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
            <div class="bar"></div>
        </div>
        <div class="controls">
            <button id="playPauseBtn">Pause</button>
            <button id="resetBtn">Reset</button>
        </div>
    </div> 

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

        body {
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background: linear-gradient(135deg, #EDCDC2 0%, #f5e5df 100%);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            overflow: hidden;
        }

        .container {
            text-align: center;
        }

        .wave-container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 200px;
            margin-bottom: 40px;
        }

        .bar {
            width: 6px;
            background: linear-gradient(180deg, #d4a89a 0%, #c9968a 100%);
            border-radius: 10px;
            animation: wave 1.2s ease-in-out infinite;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .bar:nth-child(1) { animation-delay: 0s; }
        .bar:nth-child(2) { animation-delay: 0.1s; }
        .bar:nth-child(3) { animation-delay: 0.2s; }
        .bar:nth-child(4) { animation-delay: 0.3s; }
        .bar:nth-child(5) { animation-delay: 0.4s; }
        .bar:nth-child(6) { animation-delay: 0.5s; }
        .bar:nth-child(7) { animation-delay: 0.4s; }
        .bar:nth-child(8) { animation-delay: 0.3s; }
        .bar:nth-child(9) { animation-delay: 0.2s; }
        .bar:nth-child(10) { animation-delay: 0.1s; }

        @keyframes wave {
            0%, 100% {
                height: 30px;
            }
            50% {
                height: 150px;
            }
        }

        .controls {
            display: flex;
            gap: 15px;
            justify-content: center;
        }

        button {
            padding: 12px 30px;
            background: #fff;
            border: 2px solid #d4a89a;
            border-radius: 25px;
            color: #8a6d5f;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        button:hover {
            background: #d4a89a;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        button:active {
            transform: translateY(0);
        }

        .paused .bar {
            animation-play-state: paused;
        }

        h1 {
            color: #8a6d5f;
            font-size: 28px;
            margin-bottom: 30px;
            font-weight: 300;
            letter-spacing: 2px;
        }

  const waveContainer = document.getElementById('waveContainer');
        const playPauseBtn = document.getElementById('playPauseBtn');
        const resetBtn = document.getElementById('resetBtn');
        let isPaused = false;

        playPauseBtn.addEventListener('click', () => {
            isPaused = !isPaused;
            
            if (isPaused) {
                waveContainer.classList.add('paused');
                playPauseBtn.textContent = 'Play';
            } else {
                waveContainer.classList.remove('paused');
                playPauseBtn.textContent = 'Pause';
            }
        });

        resetBtn.addEventListener('click', () => {
            const bars = document.querySelectorAll('.bar');
            
            // Remove animation temporarily
            waveContainer.style.display = 'none';
            
            // Force reflow
            void waveContainer.offsetWidth;
            
            // Restore animation
            waveContainer.style.display = 'flex';
            
            // Ensure it's playing
            if (isPaused) {
                isPaused = false;
                waveContainer.classList.remove('paused');
                playPauseBtn.textContent = 'Pause';
            }
        });