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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

canvas {
    border: 2px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 8px;
}