body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f0f0f0;
    transition: background-color 0.3s ease;
}

body.dark-mode {
    background-color: #333;
    color: #f0f0f0;
}

.container {
    position: relative;
}

#game {
    text-align: center;
}

#choices button {
    font-size: 2rem;
    padding: 1rem;
    margin: 0.5rem;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #fff;
    transition: transform 0.2s ease;
}

#choices button:hover {
    transform: scale(1.1);
}

#result {
    margin-top: 1rem;
    font-size: 1.2rem;
    font-weight: bold;
}

#computer-choice {
    margin-top: 1rem;
    font-size: 2rem;
}

#dark-mode-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    cursor: pointer;
    background-color: #fff;
}

body.dark-mode #dark-mode-toggle {
    background-color: #555;
    color: #f0f0f0;
    border-color: #888;
}