body {
    font-family: Arial, sans-serif;
    background: linear-gradient(-45deg, #ff9a9e, #fad0c4, #fbc2eb, #a18cd1);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* Keyframes for background animation */
@keyframes gradientBG {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Container Styling */
.container {
    text-align: center;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 100%;
    position: relative;
    z-index: 1;
}

/* Canvas Styling for Fireworks */
#fireworksCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

h1 {
    color: #2c3e50;
}

input {
    width: 80%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    margin: 5px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    opacity: 0.9;
}

button#singleSubmit, button#multiSubmit, button#startMultiGameBtn {
    background-color: #3498db;
    color: white;
}

button.restartBtn {
    background-color: #e74c3c;
    color: white;
}
#scoreboard {
    background-color: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    margin-top: 20px;
}