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

body {
    background: #1a1a2e;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

canvas {
    border: 3px solid #e94560;
    border-radius: 8px;
    image-rendering: pixelated;
}

/* Mobile: hide border, fill screen */
@media (max-width: 1024px) and (pointer: coarse) {
    canvas {
        border: none;
        border-radius: 0;
    }
    body {
        background: #000;
    }
}