* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: fixed;
}

body {
    background: #1a1a2e;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Arial', sans-serif;
}

#game-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}

canvas {
    display: block;
    touch-action: none;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* Desktop - centered with shadow */
@media (min-width: 768px) {
    canvas {
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        border-radius: 8px;
    }
}