Appearance section: opacity + corner radius + visibility toggle

- Opacity with blend icon, corner radius with radius icon
- Eye/eye-off toggle in section header
- Layers panel: hidden layers dimmed (opacity-50) with permanent
  eye-off indicator
- Removed duplicate corner radius from LayoutSection

components.d.ts

@@ -20,11 +20,13 @@ declare module 'vue' {
     IconLucideAlignLeft: typeof import('~icons/lucide/align-left')['default']
     IconLucideAlignRight: typeof import('~icons/lucide/align-right')['default']
     IconLucideBaseline: typeof import('~icons/lucide/baseline')['default']
+    IconLucideBlend: typeof import('~icons/lucide/blend')['default']
     IconLucideCheck: typeof import('~icons/lucide/check')['default']
     IconLucideChevronDown: typeof import('~icons/lucide/chevron-down')['default']
     IconLucideChevronRight: typeof import('~icons/lucide/chevron-right')['default']
     IconLucideEye: typeof import('~icons/lucide/eye')['default']
     IconLucideEyeOff: typeof import('~icons/lucide/eye-off')['default']
+    IconLucideRadius: typeof import('~icons/lucide/radius')['default']
     IconLucideSearch: typeof import('~icons/lucide/search')['default']
     LayersPanel: typeof import('./src/components/LayersPanel.vue')['default']
     LayoutSection: typeof import('./src/components/properties/LayoutSection.vue')['default']

src/components/LayersPanel.vue

@@ -218,13 +218,14 @@ function updateDropTarget(ev: PointerEvent) {
             @select="onSelect"
           >
             <button
-              class="flex w-full cursor-pointer items-center gap-1 rounded border-none py-1 text-left text-xs"
+              class="group/row flex w-full cursor-pointer items-center gap-1 rounded border-none py-1 text-left text-xs"
               :class="[
                 store.state.selectedIds.has(item.value.id)
                   ? 'bg-accent text-white'
                   : 'bg-transparent text-surface hover:bg-hover',
                 dragging && dragNodeId === item.value.id ? 'opacity-30' : '',
-                dropIntoId === item.value.id ? 'ring-2 ring-accent ring-inset' : ''
+                dropIntoId === item.value.id ? 'ring-2 ring-accent ring-inset' : '',
+                !item.value.visible ? 'opacity-50' : ''
               ]"
               :style="{ paddingLeft: `${8 + (item.level - 1) * 16}px` }"
               @pointerdown.prevent="onPointerDown($event, item.value.id)"
@@ -239,7 +240,11 @@ function updateDropTarget(ev: PointerEvent) {
               </span>
               <span v-else class="w-4 shrink-0" />
               <component :is="nodeIcons[item.value.type] ?? IconSquare" class="size-3 shrink-0 opacity-70" />
-              <span class="truncate">{{ item.value.name }}</span>
+              <span class="min-w-0 flex-1 truncate">{{ item.value.name }}</span>
+              <icon-lucide-eye-off
+                v-if="!item.value.visible"
+                class="mr-1 size-3 shrink-0 text-muted"
+              />
             </button>
           </TreeItem>
         </div>

src/components/PropertiesPanel.vue

@@ -33,7 +33,7 @@ const multiCount = computed(() => store.selectedNodes.value.length)
         <span class="text-[11px] text-muted">Mixed</span>
         <span class="text-xs font-semibold">{{ multiCount }} layers</span>
       </div>
-      <AppearanceSection :opacity="store.selectedNodes.value[0]?.opacity ?? 1" />
+      <AppearanceSection v-if="store.selectedNodes.value[0]" :node="store.selectedNodes.value[0]" />
     </div>
 
     <!-- Single selection -->
@@ -46,7 +46,7 @@ const multiCount = computed(() => store.selectedNodes.value.length)
 
       <PositionSection :node="node" />
       <LayoutSection :node="node" />
-      <AppearanceSection :opacity="node.opacity" />
+      <AppearanceSection :node="node" />
       <TypographySection v-if="node.type === 'TEXT'" :node="node" />
       <FillSection :node-id="node.id" :fills="node.fills" />
       <StrokeSection :node-id="node.id" :strokes="node.strokes" />

src/components/properties/AppearanceSection.vue

@@ -2,24 +2,54 @@
 import ScrubInput from '../ScrubInput.vue'
 import { useNodeProps } from '../../composables/use-node-props'
 
-const { updateProp, commitProp } = useNodeProps()
+import type { SceneNode } from '../../engine/scene-graph'
 
-defineProps<{ opacity: number }>()
+const { node } = defineProps<{ node: SceneNode }>()
+const { store, updateProp, commitProp } = useNodeProps()
+
+function toggleVisibility() {
+  store.updateNodeWithUndo(node.id, { visible: !node.visible }, 'Toggle visibility')
+  store.requestRender()
+}
 </script>
 
 <template>
   <div class="border-b border-border px-3 py-2">
-    <label class="mb-1.5 block text-[11px] text-muted">Appearance</label>
+    <div class="mb-1.5 flex items-center justify-between">
+      <label class="text-[11px] text-muted">Appearance</label>
+      <button
+        class="flex cursor-pointer items-center justify-center rounded border-none bg-transparent p-0.5 text-muted hover:bg-hover hover:text-surface"
+        :class="{ 'text-accent': !node.visible }"
+        title="Toggle visibility"
+        @click="toggleVisibility"
+      >
+        <icon-lucide-eye v-if="node.visible" class="size-3.5" />
+        <icon-lucide-eye-off v-else class="size-3.5" />
+      </button>
+    </div>
     <div class="flex gap-1.5">
       <ScrubInput
-        icon="⊘"
         suffix="%"
-        :model-value="Math.round(opacity * 100)"
+        :model-value="Math.round(node.opacity * 100)"
         :min="0"
         :max="100"
         @update:model-value="updateProp('opacity', $event / 100)"
         @commit="(v: number, p: number) => commitProp('opacity', v / 100, p / 100)"
-      />
+      >
+        <template #icon>
+          <icon-lucide-blend class="size-3" />
+        </template>
+      </ScrubInput>
+      <ScrubInput
+        :model-value="node.cornerRadius"
+        :min="0"
+        @update:model-value="updateProp('cornerRadius', $event)"
+        @commit="(v: number, p: number) => commitProp('cornerRadius', v, p)"
+      >
+        <template #icon>
+          <icon-lucide-radius class="size-3" />
+        </template>
+      </ScrubInput>
     </div>
   </div>
 </template>

src/components/properties/LayoutSection.vue

@@ -145,10 +145,6 @@ function setAlignment(primary: LayoutAlign, counter: LayoutCounterAlign) {
         </div>
       </div>
     </div>
-    <!-- Corner radius -->
-    <div class="mt-1.5 flex gap-1.5">
-      <ScrubInput icon="↻" :model-value="node.cornerRadius" :min="0" @update:model-value="updateProp('cornerRadius', $event)" @commit="(v: number, p: number) => commitProp('cornerRadius', v, p)" />
-    </div>
   </div>
 
   <!-- Auto Layout -->