body {
    margin: 0;
    padding: 0;
    background-color: #000;
    color: #fff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden; /* Prevents scrollbars */
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

canvas {
    background-color: #0c0a18; /* Deep space blue */
    display: block;
    touch-action: none; /* Important for mobile controls */
}

#ui-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Allows canvas interaction */
}

#score-display {
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 1.5em;
    text-shadow: 2px 2px 4px #000;
}

.overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.75);
    padding: 2em;
    border-radius: 15px;
    text-align: center;
    pointer-events: all; /* Make buttons clickable */
    width: 80%;
    max-width: 400px;
}

.overlay h1 {
    margin-top: 0;
    color: #ff4500;
}

.overlay button {
    margin-top: 1em;
    padding: 10px 25px;
    font-size: 1.2em;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: #ff4500;
    color: white;
    transition: background-color 0.2s;
}

.overlay button:hover {
    background-color: #ff6347;
}

.instructions {
    margin: 1.5em 0;
    font-size: 0.9em;
    line-height: 1.5;
    color: #ddd;
}

/* On-screen shoot button for mobile */
#shoot-button {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 80px;
    height: 80px;
    background-color: rgba(255, 69, 0, 0.7);
    border: 3px solid white;
    border-radius: 50%;
    pointer-events: all;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5em;
    color: white;
}

/* Use a pseudo-element to add the emoji */
#shoot-button::after {
    content: '💥';
}

.hidden {
    display: none !important;
}