{
  "name": "OSI Model — Interactive",
  "short_name": "OSI Model",
  "description": "Interactive animated OSI model — trace requests, compare TCP vs UDP, explore every layer.",
  "start_url": "./index.html",
  "display": "standalone",
  "background_color": "#0f0f13",
  "theme_color": "#7b2ff7",
  "orientation": "portrait-primary",
  "icons": [
    { "src": "./icon-192.svg", "sizes": "192x192", "type": "image/svg+xml", "purpose": "any maskable" },
    { "src": "./icon-512.svg", "sizes": "512x512", "type": "image/svg+xml", "purpose": "any maskable" }
  ],
  "shortcuts": [
    { "name": "Single Stack",    "url": "./index.html#single"  },
    { "name": "Trace a Request", "url": "./index.html#trace"   },
    { "name": "TCP vs UDP",      "url": "./index.html#compare" }
  ]
}