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

html, body{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
}

header {
    width: 100%;
    text-align: center;
    padding: 15px;
    background-color: white;
    box-shadow: 0 2px 4px red;
    margin: 0 0 10px 0;
    font-size: 25px;
    font-weight: bold;
    color: linear-gradient(60deg, #ff0000, #ff7f00ff);
}

main {
    width: 100%;
    max-width: 800px;
    margin: auto;
    text-align: center;
}

#gameResult{
    margin: 20px 0;
    padding: 5px 15px;
    font-size: 16px;
    font-weight: bold;
    color: #333;    
}

#gameContainer {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    margin-bottom: 10px;

    #computerChoiceCont, #userChoiceCont {
        width: 150px;
        overflow: hidden;
        height: 150px;
        border: 2px solid #333;
        border-radius: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 40px;
        background-color: white;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    #userOptions {
        display: flex;
        justify-content: center;
        gap: 15px;
        margin-top: 20px;
        flex-direction: column;

        button {
            padding: 10px 20px;
            font-size: 16px;
            border: none;
            border-radius: 5px;
            background-color: #007BFF;
            color: white;
            cursor: pointer;
            transition: background-color 0.3s;

            &:hover {
                background-color: #0056b3;
            }
        }
    }
}

#scoreBoard {
    margin-top: 20px;
    font-size: 18px;
    border-collapse: collapse;
    width: 100%;
    border: 1px solid #ddd;

    th, td {
        text-align: center;
        padding: 8px;
        border: 1px solid #ddd;
    }

    th {
        background-color: #dcdcdc;
    }

    tr{
        background-color: whitesmoke;

        &:hover {
            background-color: #f1f1f1;
        }
    }

}

#introMain {
    margin: 20px auto;
    padding: 15px;
    max-width: 800px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    font-size: 16px;
    line-height: 1.5;
    color: #333;

    ul {
        text-align: left;
        margin-top: 10px;
        list-style-type: disc;
        padding-left: 20px;
    }
    button {
        margin-top: 15px;
        padding: 10px 20px;
        font-size: 16px;
        border: none;
        border-radius: 5px;
        background-color: #28a745;
        color: white;
        cursor: pointer;
        transition: background-color 0.3s;

        &:hover {
            background-color: #1e7e34;
        }
    }
}