:root {
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --neon-yellow: #ffc107;
    --neon-red: #ff0000;
    --bg-color: #111;
}

body {
    background-color: var(--bg-color);
    touch-action: none; /* Prevent pull-to-refresh on mobile */
    font-family: 'Courier New', Courier, monospace; /* Retro font */
}

#game-container {
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
    border: 2px solid #333;
    border-radius: 4px;
    background-color: #000;
}

canvas {
    display: block;
    max-width: 100%;
    max-height: 80vh; /* Leave room for header and controls */
}

.neon-border {
    box-shadow: 0 0 10px currentColor;
    transition: all 0.2s ease;
}

.neon-border:hover {
    box-shadow: 0 0 20px currentColor, inset 0 0 10px currentColor;
    transform: scale(1.05);
}

/* Scanline effect */
body::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0),
        rgba(255, 255, 255, 0) 50%,
        rgba(0, 0, 0, 0.1) 50%,
        rgba(0, 0, 0, 0.1)
    );
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 100;
}