[F] Fix mobile view height causing button to be invisible when browser url bar is not hidden

src/routes/+layout.svelte

@@ -3,6 +3,7 @@
   import "@fontsource/roboto"
   import 'virtual:uno.css'
   import "../style/app.sass"
+  import "../style/app.scss"
   import "../style/material.scss"
   import '@unocss/reset/normalize.css'
   import '@unocss/reset/tailwind-v4.css'
@@ -52,7 +53,7 @@
   <meta property="twitter:image" content="https://amaoke.app/images/meta.png" />
 </svelte:head>
 
-<div class="vbox h-screen min-h-screen box-border overflow-hidden relative max-w-1200px mx-auto">
+<div id="layout-view" class="vbox box-border overflow-hidden relative max-w-1200px mx-auto">
   {@render children()}
 </div>
 

src/style/app.sass

@@ -10,6 +10,9 @@ body
     margin: 0
     background: rgb(var(--m3-scheme-background))
 
+#layout-view
+    height: var(--svh)
+
 .hbox
     display: flex
     flex-direction: row

src/style/app.scss

@@ -0,0 +1,3 @@
+:root { --svh: 100vh; --dvh: 100vh; --svw: 100vw; --dvw: 100vw; }
+@supports (height: 100svh) { :root { --svh: 100svh; --svw: 100svw; } }
+@supports (height: 100dvh) { :root { --dvh: 100dvh; --dvw: 100dvw; } }