Webleb - fragmentos de código

<!DOCTYPE html>
<html lang="en">
<head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Andev Web</title>
    <link href="https://fonts.googleapis.com/css2?family=Rubik:wght@400;500&display=swap" rel="stylesheet">
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="container">
        <div class="stats">
            <p id="heads-count">Heads: 0</p>
            <p id="tails-count">Tails: 0</p>
        </div>
        <div class="coin" id="coin">
            <div class="heads">
                <img src="https://i.postimg.cc/8C3SmCRC/heads.png">
            </div>
            <div class="tails">
                <img src="https://i.postimg.cc/MTQ8P85m/tails.png">
            </div>
        </div>
        <div class="buttons">
            <button id="flip-button">
                Flip Coin
            </button>
            <button id="reset-button">
                Reset
            </button>
        </div>
    </div>
    <script src="script.js"></script>
</body>
</html>

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: "Rubik",sans-serif;
}
body{
    height: 100%;
    background: linear-gradient(
        to right,
        #575ce5 50%,
        #f9fbfc 50%
    ) fixed;
}
.container{
    background-color: #ffffff;
    width: 400px;
    padding: 50px;
    position: absolute;
    transform: translate(-50%,-50%);
    top: 50%;
    left: 50%;
    box-shadow: 15px 30px 35px rgba(0,0,0,0.1);
    border-radius: 10px;
    -webkit-perspective: 300px;
    perspective: 300px;
}
.stats{
    text-align: right;
    color: #101020;
    font-weight: 500;
    line-height: 25px;
}
.coin{
    height: 150px;
    width: 150px;
    position: relative;
    margin: 50px auto;
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d;
}
.coin img{
    width: 145px;
}
.heads,.tails{
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
            backface-visibility: hidden;
}
.tails{
    transform: rotateX(180deg);
}
@keyframes spin-tails{
    0%{
        transform: rotateX(0);
    }
    100%{
        transform: rotateX(1980deg);
    }
}
@keyframes spin-heads{
    0%{
        transform: rotateX(0);
    }
    100%{
        transform: rotateX(2160deg);
    }
}
.buttons{
    display: flex;
    justify-content: space-between;
}
button{
    width: 120px;
    padding: 10px 0;
    border: 2.5px solid #424ae0;
    border-radius: 5px;
    cursor: pointer;
}
#flip-button{
    background-color: #424ae0;
    color: #ffffff;
}
#flip-button:disabled{
    background-color: #e1e0ee;
    border-color: #e1e0ee;
    color: #101020;
}
#reset-button{
    background-color: #ffffff;
    color: #424ae0;
}

let heads = 0;
let tails = 0;
let coin = document.querySelector(".coin");
let flipBtn = document.querySelector("#flip-button");
let resetBtn = document.querySelector("#reset-button");

flipBtn.addEventListener("click", () => {
    let i = Math.floor(Math.random() * 2);
    coin.style.animation = "none";
    if(i){
        setTimeout(function(){
            coin.style.animation = "spin-heads 3s forwards";
        }, 100);
        heads++;
    }
    else{
        setTimeout(function(){
            coin.style.animation = "spin-tails 3s forwards";
        }, 100);
        tails++;
    }
    setTimeout(updateStats, 3000);
    disableButton();
});
function updateStats(){
    document.querySelector("#heads-count").textContent = `Heads: ${heads}`;
    document.querySelector("#tails-count").textContent = `Tails: ${tails}`;
}
function disableButton(){
    flipBtn.disabled = true;
    setTimeout(function(){
        flipBtn.disabled = false;
    },3000);
}
resetBtn.addEventListener("click",() => {
    coin.style.animation = "none";
    heads = 0;
    tails = 0;
    updateStats();
});

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HTML

CSS

let heads = 0;
let tails = 0;
let coin = document.querySelector(".coin");
let flipBtn = document.querySelector("#flip-button");
let resetBtn = document.querySelector("#reset-button");