Layout: resizable window, fluid SVG ring, no scrollbars unless overflow, opaque bg

tauri.conf: resizable=true, min 220x240, default 300x320.
BlockRing: SVG scales via viewBox, claims remaining vertical space.
#app uses flex column with sections flex:0 0 auto — content reflows when window resized.
Bumped --bg opacity from 0.78 to 0.93 so files behind the widget don't bleed through.
Themed scrollbars subtle when they do appear.

src-tauri/tauri.conf.json

@@ -14,11 +14,11 @@
       {
         "label": "main",
         "title": "Claude Usage",
-        "width": 280,
-        "height": 360,
-        "minWidth": 280,
-        "minHeight": 360,
-        "resizable": false,
+        "width": 300,
+        "height": 320,
+        "minWidth": 220,
+        "minHeight": 240,
+        "resizable": true,
         "decorations": false,
         "transparent": true,
         "alwaysOnTop": true,

src/components/App.svelte

@@ -92,11 +92,10 @@
 
 <style>
   .loading {
-    flex: 1;
-    display: flex;
-    align-items: center;
-    justify-content: center;
+    flex: 0 0 auto;
+    padding: 12px;
     color: var(--fg-dim);
     font-size: 12px;
+    text-align: center;
   }
 </style>

src/components/BlockRing.svelte

@@ -1,8 +1,8 @@
 <script lang="ts">
   import type { UsageBar } from "../types";
 
-  // Shows the *real* percentage from `claude /usage` — the
-  // "Current session" bar (5-hour rolling window).
+  // Shows the *real* "Current session" percentage from `claude /usage`.
+  // The SVG uses a viewBox so it scales to whatever container size we get.
   let {
     bar,
     fallbackText = "—",
@@ -11,7 +11,7 @@
     fallbackText?: string;
   } = $props();
 
-  // Geometry.
+  // Logical units; the SVG viewBox is fixed. CSS scales it.
   const SIZE = 140;
   const STROKE = 12;
   const R = (SIZE - STROKE) / 2;
@@ -26,7 +26,12 @@
 </script>
 
 <div class="wrap">
-  <svg width={SIZE} height={SIZE} viewBox={`0 0 ${SIZE} ${SIZE}`}>
+  <svg
+    viewBox={`0 0 ${SIZE} ${SIZE}`}
+    preserveAspectRatio="xMidYMid meet"
+    role="img"
+    aria-label={bar ? `${bar.percent} percent session used` : "no usage data"}
+  >
     <circle
       cx={SIZE / 2}
       cy={SIZE / 2}
@@ -60,7 +65,24 @@
 </div>
 
 <style>
-  .wrap { display: flex; justify-content: center; padding: 14px 0 6px; }
+  /*
+    Container reserves a roughly square area at ~50% of widget height.
+    The SVG fills the container and scales via viewBox.
+  */
+  .wrap {
+    flex: 1 1 0;
+    min-height: 110px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 6px 0;
+  }
+  svg {
+    width: 100%;
+    height: 100%;
+    max-width: 220px;   /* don't get absurdly large in a wide window */
+    max-height: 220px;
+  }
   text { fill: var(--fg); font-family: inherit; }
   text.big { font-size: 26px; font-weight: 600; }
   text.small { font-size: 11px; fill: var(--fg-dim); }

src/styles.css

@@ -1,7 +1,7 @@
 /* Glass / always-on-top widget look. */
 
 :root {
-  --bg: rgba(18, 20, 26, 0.78);
+  --bg: rgba(18, 20, 26, 0.93);
   --bg-card: rgba(255, 255, 255, 0.04);
   --border: rgba(255, 255, 255, 0.08);
   --fg: #e8eaf0;
@@ -38,12 +38,22 @@ html, body {
   background: var(--bg);
   border: 1px solid var(--border);
   border-radius: 12px;
-  overflow: hidden;
+  overflow: hidden;          /* the window itself never scrolls */
   display: flex;
   flex-direction: column;
   backdrop-filter: blur(14px);
 }
 
+/* Each child of #app gets a sensible flex behavior so resizing reflows
+   instead of overflowing. TitleBar and section panels are flex:0 (size
+   to content); the BlockRing wrap is flex:1 (claims remaining space). */
+
+/* Hide scrollbars unless content really overflows; when they do appear,
+   make them subtle. */
+::-webkit-scrollbar { width: 6px; height: 6px; }
+::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.15); border-radius: 3px; }
+::-webkit-scrollbar-track { background: transparent; }
+
 button {
   font: inherit;
   color: inherit;
@@ -78,7 +88,8 @@ input[type="number"], input[type="text"], select {
 }
 
 .section {
-  padding: 8px var(--pad);
+  flex: 0 0 auto;
+  padding: 6px var(--pad) 8px;
   border-top: 1px solid var(--border);
 }
 .section:first-child { border-top: none; }