body {
    margin: 0;
    padding: 0;
    height: 100vh;
    width: 100vw;
    background-color: #1a1a1a; /* Fallback background */
    font-family: 'Press Start 2P', cursive;
    color: #fff;
    overflow: hidden; /* Prevent scrollbars */
    display: flex;
    justify-content: center;
    align-items: center;
}
#gameCanvas {
    border: none; /* Removed border for full screen feel */
    background-color: #2c2c2c; /* Initial canvas background */
    display: block;
    max-width: 100%; /* Ensure canvas doesn't overflow */
    max-height: 100%; /* Ensure canvas doesn't overflow */
    object-fit: contain; 
}
#gameUI { /* This is the temporary message box */
    position: absolute;
    top: 20px; /* Adjusted top for better visibility */
    left: 50%; 
    transform: translateX(-50%); 
    padding: 10px 15px;
    background-color: rgba(0,0,0,0.8); 
    border-radius: 8px;
    font-size: clamp(0.7em, 2.5vw, 1em); 
    color: #ffcc00;
    z-index: 100; /* Ensure it's above game UI like joystick */
    pointer-events: none;
    max-width: 90%; 
    text-align: center;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}
.hidden {
    display: none;
}