body {
    background-color: skyblue;
    margin: 0;
    font-family: Arial, sans-serif;
    color: #3b2f2f;
}

.game-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 40px;
    height: 100vh;
    padding: 40px;
}

.main-area {
    text-align: center;
    background: rgba(255, 255, 255, 0.8);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

    .main-area img {
        width: 200px;
        cursor: pointer;
        transition: transform 0.1s;
    }

        .main-area img:active {
            transform: scale(0.9);
        }

.shop {
    position: fixed; /* Stick it to the screen */
    top: 0;
    right: 0; /* Push it all the way to the right */
    height: 100vh; /* Full height of the screen */
    width: 220px; /* Slightly wider for comfort */
    overflow-y: auto; /* Scroll if there are many upgrades */
    background: skyblue;
    padding: 20px;
    border-left: 4px solid #a0522d;
    box-shadow: -4px 0 10px rgba(0,0,0,0.2);
}


.upgrade {
    display: flex;
    align-items: center;
    gap: 10px;
    border: 2px solid #a0522d;
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    background: #ffe4b5;
    transition: background 0.2s;
}

    .upgrade:hover {
        background: #ffdead;
    }

    .upgrade img {
        width: 40px;
        height: 40px;
    }