body {
    font-family: 'Arial', sans-serif;
    background-color: #FFECF0;  /* Light pink background */
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
}

.container {
    max-width: 100%;
    background-color: #FFF; /* White container */
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    text-align: center;
}

h1 {
    color: #FF6B9C;  /* Pink title */
    margin-bottom: 20px;
    font-size: 1.5rem;
}

#aquarium {
    width: 80vw;
    height: 80vh;
    max-width: 300px;
    max-height: 500px;
    border: 5px solid #FF6B9C; /* Pink border */
    position: relative;
    overflow: hidden;
    margin: 20px auto;
    border-radius: 15px;
}

.ball {
    position: absolute;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    font-weight: bold;
    color: white;
}

.ball[data-value="1"] {
    background-color: #FFB3D1; /* Shades of pink for balls */
    width: 50px;
    height: 50px;
}

.ball[data-value="2"] {
    background-color: #FF6B9C;
    width: 60px;
    height: 60px;
}

.ball[data-value="3"] {
    background-color: #FF2465;
    width: 70px;
    height: 70px;
}

.ball[data-value="4"] {
    background-color: #FF0040;
    width: 80px;
    height: 80px;
}

.ball[data-value="5"] {
    background-color: #D50034;
    width: 90px;
    height: 90px;
}

#gameOverMessage, #clearMessage {
    font-size: 1.5rem;
    color: #FF0040;
    margin-top: 20px;
}

#upcomingBalls {
    display: flex;
    gap: 10px;
    margin: 20px auto;
}

.previewBall {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    font-weight: bold;
    color: white;
    background-color: #FF6B9C;
}