Draw the empty state without Tailwind

Plan step 36 (actions, last of the batch). <x-empty-state> renders
data-md-empty-state with data-md-empty-state-illustration/-shape/
-icon/-title/-description/-actions; no class list. empty-state.css
draws the secondary-container shape behind the on-secondary-container
icon (the icon needs its own stacking context to paint above the
shape's absolute position), the title-large title and the 448px
body-medium description. The docblock's illustration example moves
from a caller class to a caller style, since the shape rule scans
the whole file. EmptyStateTest is rewritten on the hooks and
ComponentStylesheet.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9

resources/css/components.css

@@ -31,6 +31,7 @@
 @import './components/progress.css';
 @import './components/alert.css';
 @import './components/stat.css';
+@import './components/empty-state.css';
 
 /* Inputs, selection and data */
 @import './components/form.css';

resources/css/components/empty-state.css

@@ -0,0 +1,69 @@
+/*
+ * <x-empty-state>: "you have nothing here yet" — not an M3 component; built from M3 Expressive's
+ * parts, a shape in secondary-container behind an icon in on-secondary-container, a title-large
+ * title, body-medium description at 448px and a centred row of actions.
+ *
+ * The shape is `position: absolute`, so the icon needs its own stacking context
+ * (`position: relative`) to paint above it in DOM order rather than losing to the shape's own —
+ * an application's illustration slot replaces both and sizes itself.
+ */
+
+@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;
+
+@import './icon.css';
+@import './shape.css';
+
+@layer material.components {
+    [data-md-empty-state] {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        gap: var(--md-sys-measurement-space200);
+        padding-inline: var(--md-sys-measurement-space200);
+        padding-block: var(--md-sys-measurement-space500);
+        text-align: center;
+    }
+
+    [data-md-empty-state-illustration] {
+        position: relative;
+        display: grid;
+        width: 112px;
+        height: 112px;
+        place-items: center;
+    }
+
+    [data-md-empty-state-shape] {
+        position: absolute;
+        inset: 0;
+        width: 100%;
+        height: 100%;
+        color: var(--md-sys-color-secondary-container);
+    }
+
+    [data-md-empty-state-icon] {
+        position: relative;
+        color: var(--md-sys-color-on-secondary-container);
+    }
+
+    [data-md-empty-state-title] {
+        font: var(--md-sys-typescale-title-lg);
+        letter-spacing: var(--md-sys-typescale-title-lg-tracking);
+        font-variation-settings: normal;
+    }
+
+    [data-md-empty-state-description] {
+        max-width: 448px;
+        color: var(--md-sys-color-on-surface-variant);
+        font: var(--md-sys-typescale-body-md);
+        letter-spacing: var(--md-sys-typescale-body-md-tracking);
+        font-variation-settings: normal;
+    }
+
+    [data-md-empty-state-actions] {
+        display: flex;
+        flex-wrap: wrap;
+        justify-content: center;
+        gap: 12px;
+        padding-top: var(--md-sys-measurement-space100);
+    }
+}

resources/views/components/empty-state.blade.php

@@ -12,13 +12,15 @@
 
      An application with its own artwork puts it in the `illustration` slot, which is drawn in place
      of the shape and icon (both props are then unused). The slot sizes itself; its attributes go on
-     the element around it, so `class` can set the colour an SVG's `currentColor` takes:
+     the element around it, so `style` can set the colour an SVG's `currentColor` takes:
 
          <x-empty-state title="No routes yet">
-             <x-slot:illustration class="text-primary"><svg class="size-32" aria-hidden="true">…</svg></x-slot:illustration>
+             <x-slot:illustration style="color: var(--md-sys-color-primary)"><svg style="width: 128px; height: 128px" aria-hidden="true">…</svg></x-slot:illustration>
          </x-empty-state>
 
-     A slot holding only whitespace or comments counts as empty, and the shape and icon stay. --}}
+     A slot holding only whitespace or comments counts as empty, and the shape and icon stay.
+
+     Drawn by resources/css/components/empty-state.css from `data-md-empty-state`; no class list. --}}
 
 @props([
     'icon' => 'inbox',
@@ -27,25 +29,25 @@
     'description' => null,
 ])
 
-<div {{ $attributes->class('flex flex-col items-center gap-4 px-4 py-10 text-center') }}>
+<div data-md-empty-state {{ $attributes }}>
     @if (isset($illustration) && $illustration->hasActualContent())
         <div {{ $illustration->attributes }}>{{ $illustration }}</div>
     @else
-        <div class="relative grid size-28 place-items-center">
-            <x-livewire-material::shape :name="$shape" class="absolute inset-0 size-full text-secondary-container" />
-            <x-livewire-material::icon :name="$icon" class="relative size-12 text-on-secondary-container" />
+        <div data-md-empty-state-illustration>
+            <x-livewire-material::shape :name="$shape" data-md-empty-state-shape />
+            <x-livewire-material::icon :name="$icon" size="48" data-md-empty-state-icon />
         </div>
     @endif
 
     @if ($title)
-        <h3 class="type-title-lg">{{ $title }}</h3>
+        <h3 data-md-empty-state-title>{{ $title }}</h3>
     @endif
 
     @if ($description || $slot->isNotEmpty())
-        <div class="max-w-md type-body-md text-on-surface-variant">{{ $description ?? $slot }}</div>
+        <div data-md-empty-state-description>{{ $description ?? $slot }}</div>
     @endif
 
     @isset($actions)
-        <div class="flex flex-wrap justify-center gap-3 pt-2">{{ $actions }}</div>
+        <div data-md-empty-state-actions>{{ $actions }}</div>
     @endisset
 </div>