body {
    margin: 0;
    padding: 0;
    background-color: #000;
    color: #fff;
    font-family: Arial, sans-serif;
    overflow: hidden;
}

#game-container {
    position: relative;
    width: 100%;
    height: 100vh;
}

#game-canvas {
    background-color: #000;
    width: 100%;
    height: 100%;
}

#game-ui {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
}

h1 {
    margin: 0;
    font-size: 24px;
    text-shadow: 0 0 5px #fff;
}

p {
    margin: 10px 0;
    text-shadow: 0 0 5px #fff;
}

button {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 18px;
    background-color: #ff6600;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0 0 10px #ff6600;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #ff8800;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: #222;
    padding: 20px;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.modal h2 {
    margin-top: 0;
    color: #fff;
    text-shadow: 0 0 5px #fff;
}

.modal button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 18px;
    background-color: #ff6600;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0 0 10px #ff6600;
    transition: background-color 0.3s;
}

.modal button:hover {
    background-color: #ff8800;
}

#settings {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    color: #fff;
    text-shadow: 0 0 5px #fff;
}

#settings h2 {
    margin: 0 0 10px;
    font-size: 18px;
}

#settings label {
    display: block;
    margin-bottom: 5px;
}

#settings input[type="range"] {
    width: 100%;
    margin-bottom: 10px;
}

#score-container {
    position: absolute;
    bottom: 20px;
    left: 20px;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    color: #fff;
    text-shadow: 0 0 5px #fff;
}

#formula-container {
    position: absolute;
    bottom: 60px;
    left: 20px;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    color: #fff;
    text-shadow: 0 0 5px #fff;
}