update bus map style

  name: "MyMap",

  data: () => ({

    map_style_url: "https://mirrors.sustech.edu.cn/osm-tile/styles/osm-bright/style.json",

    map_style_url: "https://bus.sustcra.com/static/osm-style/osm-bright.json",

    map_text_colour: "#000000",

    bus_location_data_api: [],

    bus_location_data_display: [],

    if (await userPrefersDark) {

      console.log("dark mode enabled.")

      this.map_text_colour = "#FFFFFF"

      this.map_style_url = "https://mirrors.sustech.edu.cn/osm-tile/styles/osm-blue/style.json";

      this.map_style_url = "https://bus.sustcra.com/static/osm-style/osm-blue.json";

    }

    this.map = new maplibre.Map({