Improve toolbar for both mobile and desktop with unified responsive design

- Create unified toolbar component that works on both mobile and desktop
- Mobile toolbar is compact (40px height) with proper touch targets
- Desktop toolbar maintains standard spacing (44px height)
- CSV area now has consistent height with other toolbar buttons
- Added compact mode to FileUpload showing "CSV" and "URL" labels
- ExampleSelector now has proper dropdown arrow and consistent styling
- LibrarySelector shows WebR status on mobile with same colors as desktop
- WebR status shows loading state for all operations (init, execute, package install)
- Removed checkmark from mobile WebR status to reduce visual noise
- All components use consistent border radius, padding, and hover states
- Fixed toolbar visibility issues on mobile devices

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: stared

package.json

@@ -1,7 +1,7 @@
 {
   "name": "webr-ggplot2-demo",
   "private": true,
-  "version": "0.2.9",
+  "version": "0.2.10",
   "type": "module",
   "scripts": {
     "dev": "vite",

src/App.vue

@@ -166,49 +166,34 @@ onMounted(async () => {
     <AppHeader />
 
     <main class="main">
-      <!-- Mobile toolbar -->
-      <div
-        v-if="isMobile"
-        class="mobile-toolbar"
-      >
-        <FileUpload 
-          :uploaded-file="currentCsvData"
-          @file-uploaded="handleFileUpload" 
-          @file-removed="handleFileRemoved" 
-        />
-        <ExampleSelector @example-selected="handleExampleSelect" />
-        <LibrarySelector 
-          :installed-libraries="installedLibraries" 
-          :is-loading="isInitializing"
-          :package-versions="packageVersions"
-          @toggle-library="toggleLibrary"
-        />
-      </div>
-
-      <!-- Desktop toolbar -->
-      <div
-        v-else
-        class="toolbar"
-      >
-        <div class="toolbar-left">
+      <!-- Unified responsive toolbar -->
+      <div class="toolbar" :class="{ 'mobile': isMobile }">
+        <div class="toolbar-group toolbar-left">
           <FileUpload 
             :uploaded-file="currentCsvData"
+            :compact="isMobile"
             @file-uploaded="handleFileUpload" 
             @file-removed="handleFileRemoved" 
           />
-          <ExampleSelector @example-selected="handleExampleSelect" />
+          <ExampleSelector 
+            :compact="isMobile"
+            @example-selected="handleExampleSelect" 
+          />
         </div>
-        <div class="toolbar-right">
+        <div class="toolbar-group toolbar-right">
           <WebRStatus 
+            v-if="!isMobile"
             :is-ready="isReady" 
-            :is-loading="isInitializing" 
+            :is-loading="isLoading" 
             :loading-status="loadingStatus"
             :webr-version="webrVersion"
           />
           <LibrarySelector 
             :installed-libraries="installedLibraries" 
-            :is-loading="isInitializing"
+            :is-loading="isLoading"
+            :is-ready="isReady"
             :package-versions="packageVersions"
+            :show-status="isMobile"
             @toggle-library="toggleLibrary"
           />
         </div>
@@ -322,28 +307,17 @@ onMounted(async () => {
   flex-direction: column;
   overflow: hidden;
   min-height: 0;
+  position: relative;
 }
 
-/* Mobile toolbar */
-.mobile-toolbar {
-  background: white;
-  border-bottom: 1px solid #e5e7eb;
-  padding: 0.25rem;
-  display: flex;
-  align-items: center;
-  gap: 0.25rem;
-  flex-shrink: 0;
-  height: 32px;
-}
-
-
 /* Mobile split view */
 .mobile-container {
   flex: 1;
   display: flex;
   overflow: hidden;
   position: relative;
   width: 100%;
+  min-height: 0;
 }
 
 .panel-wrapper {
@@ -409,28 +383,61 @@ onMounted(async () => {
   pointer-events: none;
 }
 
-/* Desktop toolbar */
+/* Unified responsive toolbar */
 .toolbar {
   background: white;
   border-bottom: 1px solid #e5e7eb;
   padding: 0.75rem 1rem;
-  display: flex;
+  display: flex !important;
   justify-content: space-between;
   align-items: center;
   flex-shrink: 0;
   gap: 1rem;
+  min-height: 44px;
+  visibility: visible !important;
+  opacity: 1 !important;
+  position: relative;
+  z-index: 10;
 }
 
-.toolbar-left {
+.toolbar.mobile {
+  padding: 0.375rem 0.5rem;
+  gap: 0.375rem;
+  min-height: 40px;
+  height: 40px;
+  display: flex !important;
+}
+
+.toolbar-group {
   display: flex;
+  align-items: center;
   gap: 0.75rem;
+  min-width: 0;
+}
+
+.toolbar.mobile .toolbar-group {
+  gap: 0.375rem;
+}
+
+.toolbar-left {
+  flex: 1;
+  display: flex;
   align-items: center;
+  gap: 0.75rem;
+}
+
+.toolbar.mobile .toolbar-left {
+  gap: 0.375rem;
 }
 
 .toolbar-right {
   display: flex;
-  gap: 0.75rem;
   align-items: center;
+  gap: 0.75rem;
+}
+
+.toolbar.mobile .toolbar-right {
+  gap: 0.375rem;
 }
 
 
@@ -499,10 +506,6 @@ onMounted(async () => {
 
 /* Mobile styles */
 @media (max-width: 768px) {
-  .mobile-toolbar {
-    display: flex;
-  }
-  
   .mobile-container {
     display: flex;
     flex: 1;

src/components/ConsoleToggle.vue

@@ -89,12 +89,12 @@ const toggleConsole = (): void => {
   padding: 0.5rem 0.75rem;
   font-size: 0.875rem;
   cursor: pointer;
-  transition: all 0.3s ease;
+  transition: all 0.2s ease;
   display: flex;
   align-items: center;
   gap: 0.5rem;
   color: #6b7280;
-  min-height: 38px;
+  min-height: 36px;
   white-space: nowrap;
 }
 
@@ -137,9 +137,9 @@ const toggleConsole = (): void => {
 
 @media (max-width: 768px) {
   .console-toggle {
-    min-height: 36px;
-    font-size: 0.875rem;
-    padding: 0.5rem 0.625rem;
+    min-height: 32px;
+    font-size: 0.8125rem;
+    padding: 0.375rem 0.5rem;
   }
 }
 </style>

src/components/ExampleSelector.vue

@@ -3,6 +3,12 @@ import { ref, computed } from 'vue'
 import { examples } from '@/data/examples'
 import type { RExample } from '@/types'
 
+interface Props {
+  compact?: boolean
+}
+
+defineProps<Props>()
+
 const emit = defineEmits<{
   exampleSelected: [example: RExample]
 }>()
@@ -46,43 +52,56 @@ const handleExampleChange = (): void => {
   align-items: center;
   min-width: 0;
   flex: 1;
+  max-width: 250px;
 }
 
 .select {
   background: #f3f4f6;
   border: 1px solid #d1d5db;
   border-radius: 6px;
-  padding: 0.5rem 0.75rem;
+  padding: 0.375rem 0.625rem;
+  padding-right: 1.5rem;
   font-size: 0.875rem;
   cursor: pointer;
-  transition: all 0.3s ease;
+  transition: all 0.2s ease;
   width: 100%;
-  max-width: 250px;
-  min-height: 38px;
+  max-width: 200px;
+  min-height: 32px;
+  appearance: none;
+  background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20width%3D%2714%27%20height%3D%278%27%20viewBox%3D%270%200%2014%208%27%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%3E%3Cpath%20d%3D%27M1%201l6%206%206-6%27%20stroke%3D%27%236B7280%27%20stroke-width%3D%272%27%20fill%3D%27none%27%20fill-rule%3D%27evenodd%27%2F%3E%3C%2Fsvg%3E');
+  background-repeat: no-repeat;
+  background-position: right 0.5rem center;
+  background-size: 12px;
 }
 
 .select:hover {
   background: #e5e7eb;
-  border-color: #9ca3af;
+  border-color: #3b82f6;
 }
 
 .select:focus {
   outline: none;
   border-color: #3b82f6;
-  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
+  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
 }
 
 @media (max-width: 768px) {
   .example-selector {
     flex: 1;
+    min-width: 0;
+    display: flex;
+    align-items: center;
   }
   
   .select {
     max-width: none;
-    min-height: 32px;
+    min-height: 28px;
     padding: 0.25rem 0.5rem;
+    padding-right: 1.25rem;
     font-size: 0.8125rem;
     border-radius: 4px;
+    background-size: 10px;
+    background-position: right 0.375rem center;
   }
 }
 </style>

src/components/FileUpload.vue

@@ -4,6 +4,7 @@ import type { CsvData } from '@/types'
 
 const props = defineProps<{
   uploadedFile?: CsvData | null
+  compact?: boolean
 }>()
 
 const emit = defineEmits<{
@@ -196,13 +197,13 @@ onUnmounted(() => {
           class="thin-btn"
           @click="fileInputRef?.click()"
         >
-          Upload file
+          {{ props.compact ? 'CSV' : 'Upload CSV file' }}
         </button>
         <button
           class="thin-btn"
           @click="showUrlInput = true"
         >
-          Load from URL
+          {{ props.compact ? 'URL' : 'Load from URL' }}
         </button>
       </div>
     </div>
@@ -278,18 +279,21 @@ onUnmounted(() => {
   position: relative;
   display: flex;
   align-items: center;
+  min-width: 0;
 }
 
 .csv-drop-zone {
   background: #fafafa;
   border: 2px dashed #d1d5db;
   border-radius: 6px;
-  padding: 0.375rem 0.5rem;
+  padding: 0.375rem 0.625rem;
   transition: all 0.3s ease;
-  min-height: 36px;
+  min-height: 32px;
+  max-height: 32px;
   display: flex;
   align-items: center;
   justify-content: center;
+  box-sizing: border-box;
 }
 
 .csv-drop-zone:hover {
@@ -319,6 +323,8 @@ onUnmounted(() => {
   cursor: pointer;
   transition: all 0.2s ease;
   white-space: nowrap;
+  font-weight: 500;
+  line-height: 1;
 }
 
 .thin-btn:hover {
@@ -371,11 +377,12 @@ onUnmounted(() => {
   background: #f3f4f6;
   border: 1px solid #d1d5db;
   border-radius: 6px;
-  padding: 0.5rem 0.75rem;
+  padding: 0.375rem 0.625rem;
   font-size: 0.875rem;
   cursor: pointer;
   transition: all 0.3s ease;
   white-space: nowrap;
+  min-height: 32px;
 }
 
 .csv-button:hover {
@@ -525,8 +532,14 @@ onUnmounted(() => {
 
 /* Mobile styles */
 @media (max-width: 768px) {
+  .file-upload {
+    display: flex;
+    align-items: center;
+  }
+  
   .csv-drop-zone {
     min-height: 28px;
+    max-height: 28px;
     padding: 0.25rem 0.375rem;
     border-radius: 4px;
   }
@@ -538,11 +551,13 @@ onUnmounted(() => {
   .thin-btn {
     padding: 0.125rem 0.25rem;
     font-size: 0.625rem;
+    line-height: 1;
   }
   
   .csv-button {
-    padding: 0.25rem 0.375rem;
-    font-size: 0.75rem;
+    padding: 0.25rem 0.5rem;
+    font-size: 0.8125rem;
+    min-height: 28px;
   }
   
   .csv-dropdown {