* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #1a1a1a;
    color: white;
    font-family: Arial, sans-serif;
    overflow: hidden;
    touch-action: none;
}

#game-container {
    position: relative;
    width: 100vmin;
    height: 100vmin;
    touch-action: none;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

#center-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

#ui {
    position: absolute;
    top: 20px;
    left: 0;
    width: 100%;
    text-align: center;
    pointer-events: none;
}

#score {
    font-size: 2rem;
    margin-bottom: 5px;
}

#message {
    font-size: 1.2rem;
    opacity: 0.8;
    min-height: 1.5em;
}

#instructions {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    text-align: center;
    font-size: 1rem;
    opacity: 0.6;
}