:root { color-scheme: light dark; font-family: Arial, sans-serif; background: #e7e7e7; color: #111; }
* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; }
/* Preserve the app's phone proportions on wide browser windows. */
#app { overflow: hidden; position: relative; width: 100%; max-width: 480px; height: 100%; height: 100dvh; margin: 0 auto; background: #f5f5f5; box-shadow: 0 0 40px #00000012; }
#loading { position: fixed; inset: 0; margin: auto; max-width: 480px; display: flex; flex-direction: column; align-items: center; justify-content: center; background: #f5f5f5; text-align: center; padding: 24px; z-index: 10; }
#loading img { border-radius: 16px; }
#loading h1 { font-size: 30px; margin: 20px 0 8px; }
#loading p { color: #666; line-height: 1.5; }
#retry { background: #111; color: white; border: 0; border-radius: 24px; padding: 14px 28px; font: inherit; cursor: pointer; }
[hidden] { display: none !important; }
noscript { position: fixed; inset: auto 0 20px; z-index: 20; text-align: center; }
@media (prefers-color-scheme: dark) {
  :root { background: #080808; color: #fff; }
  #app, #loading { background: #121212; }
  #loading p { color: #aaa; }
  #retry { background: #fff; color: #111; }
}