/* Source: https://onio.club/field1.js */
(function() {
const canvas = document.getElementById('minesweeper-bg');
if (!canvas || !canvas.getContext) return;
const ctx = canvas.getContext('2d');
const TILE_SIZE = 30;
const NUMBER_FONT_SIZE = Math.floor(TILE_SIZE * 0.65);
const FLAG_FONT = `${TILE_SIZE * 0.78}px "Segoe UI Emoji", "Apple Color Emoji", sans-serif`;
const NUMBER_FONT = `bold ${NUMBER_FONT_SIZE}px Arial, "Helvetica Neue", sans-serif`;
const COLORS = {
gridLine: 'rgba(160, 140, 120, 0.28)',
hiddenTile: '#e8e0d5',
revealedTile: '#f5f0e8',
hover: 'rgba(2AI Backend Error [200 OK]:
