Fix Blazor error panel styling

src/NullDepth/wwwroot/css/app.css

@@ -205,3 +205,17 @@ kbd { color:var(--cyan); background:none; padding:0; }
 @media(max-width:720px) { .title-card { left:1.5rem;top:8vh; }.title-card h1 { font-size:2.7rem;letter-spacing:.12em; }.title-menu { left:1.5rem;bottom:5rem; }.room-panel { left:0;bottom:5.4rem;width:100%;padding:1.2rem;background:rgba(2,8,11,.82); }.movement-pad { right:1rem;bottom:15rem; }.command-bar { overflow-x:auto;justify-content:flex-start; }.command-bar button { white-space:nowrap; }.map-grid { grid-template-columns:repeat(4,2.8rem);grid-template-rows:repeat(10,1.9rem);overflow:auto; }.briefing-card { left:1rem;width:calc(100vw - 2rem);padding:1.4rem; }.briefing-card dl { grid-template-columns:1fr; }.briefing-card dd { margin-bottom:.5rem; } }
 @media(max-width:720px) { .inventory-card ul { grid-template-columns:1fr; } .breaker-grid { grid-template-columns:1fr; } .puzzle-controls { grid-template-columns:1fr; } }
 @media(prefers-reduced-motion:reduce) { *, *::before, *::after { animation-duration:.01ms!important; animation-iteration-count:1!important; transition-duration:.01ms!important; } }
+
+#blazor-error-ui {
+    display: none;
+    position: fixed;
+    inset: auto 0 0;
+    z-index: 2000;
+    padding: .75rem 1.25rem;
+    background: #b32121;
+    color: #fff;
+    text-align: center;
+}
+
+#blazor-error-ui .reload { color: #fff; font-weight: 600; }
+#blazor-error-ui .dismiss { position: absolute; right: 1rem; cursor: pointer; }

src/NullDepth/wwwroot/index.html

@@ -13,7 +13,6 @@
     <link rel="icon" type="image/png" sizes="64x64" href="favicon.png" />
     <link rel="apple-touch-icon" sizes="192x192" href="icon-192.png" />
     <link rel="manifest" href="manifest.webmanifest" />
-    <link href="NullDepth.styles.css" rel="stylesheet" />
     <script type="importmap"></script>
     <style>
         /* Immediate loader styles to prevent FOUC */