Draw the loading indicator without Tailwind

Plan step 36. <x-loading> renders data-md-loading and data-md-contained,
and loading.css in material.components draws the 48px indicator in
primary, the contained circle and the still shape under reduced motion.
The view no longer reads the caller's classes to decide its size and
colour: a caller's utility outranks the package's layer on its own.

ActionStylesheetsTest checks the group's stylesheets for the package's
shape (layer statement, plain imports, material.components, tokens, px
breakpoints, imports of rendered components) and its views for class
lists; tests/Support/ComponentStylesheet reads a rule's declarations.

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

resources/css/components.css

@@ -12,6 +12,7 @@
 @import './components/shape.css';
 
 /* Actions and communication */
+@import './components/loading.css';
 
 /* Inputs, selection and data */
 

resources/css/components/loading.css

@@ -0,0 +1,53 @@
+/*
+ * <x-loading>: M3 Expressive's loading indicator, a shape that morphs through seven Expressive
+ * shapes while it turns, for a wait with no known length.
+ *
+ * The drawing is resources/svg/loading-indicator/, ported from androidx Compose Material 3's
+ * LoadingIndicator in bin/loading-indicator.mjs (Apache-2.0): LoadingIndicatorTokens' 38px
+ * indicator in a 48px container, which is the size here unless the caller's CSS sizes it. It is
+ * drawn in the text colour, `primary` (ActiveIndicatorColor) unless the caller colours it;
+ * `contained` puts it on a `primary-container` circle in `on-primary-container`
+ * (ContainedContainerColor, ContainedIndicatorColor), for a spinner over content.
+ *
+ * The animated drawing is SMIL, so it runs without script. Under `prefers-reduced-motion` the
+ * still drawing of the same shape takes its place: the view renders both, and this file shows one.
+ */
+
+@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;
+
+@layer material.components {
+    [data-md-loading] {
+        display: inline-flex;
+        flex-shrink: 0;
+        align-items: center;
+        justify-content: center;
+        inline-size: 48px;
+        block-size: 48px;
+        color: var(--md-sys-color-primary);
+
+        & > svg {
+            inline-size: 100%;
+            block-size: 100%;
+        }
+
+        & > [data-md-loading-still] {
+            display: none;
+        }
+
+        @media (prefers-reduced-motion: reduce) {
+            & > [data-md-loading-animated] {
+                display: none;
+            }
+
+            & > [data-md-loading-still] {
+                display: block;
+            }
+        }
+    }
+
+    [data-md-loading][data-md-contained] {
+        border-radius: var(--md-sys-shape-corner-full);
+        background-color: var(--md-sys-color-primary-container);
+        color: var(--md-sys-color-on-primary-container);
+    }
+}

resources/views/components/loading.blade.php

@@ -1,16 +1,17 @@
 {{-- M3 Expressive's loading indicator: a shape that morphs through seven Expressive shapes while
      it turns, for a wait that has no known length.
 
-     In the text colour — primary unless the caller colours it — and 48px unless sized. `contained`
-     puts it on a primary-container circle, for a spinner over content. It is a `progressbar`
-     named `label` ("Loading" by default); pass `:label="false"` where something else already
-     says what is happening, as a button's own spinner does.
+     In the text colour — primary unless the caller colours it — and 48px unless the caller's CSS
+     sizes it. `contained` puts it on a primary-container circle, for a spinner over content. It
+     is a `progressbar` named `label` ("Loading" by default); pass `:label="false"` where something
+     else already says what is happening, as a button's own spinner does.
 
      Pure SVG with SMIL, so it animates in every engine without script. Under
      `prefers-reduced-motion` the shape rests. The geometry is androidx Compose Material 3's
      LoadingIndicator and Morph, ported in bin/loading-indicator.mjs (Apache-2.0):
      LoadingIndicatorTokens' 38px indicator in a 48px container, a morph every 650ms on a spring,
-     a quarter turn per morph and a full turn every 4666ms. --}}
+     a quarter turn per morph and a full turn every 4666ms. Drawn by
+     resources/css/components/loading.css. --}}
 
 @props([
     'contained' => false,
@@ -18,26 +19,19 @@
 ])
 
 @php
-    $sized = preg_match('/(^|\s)(size|w|h)-/', (string) $attributes->get('class')) === 1;
-    $coloured = preg_match('/(^|\s)text-(?!(xs|sm|base|lg|xl|[2-9]xl|left|center|right|start|end)(\s|$))/', (string) $attributes->get('class')) === 1;
     $decorative = $label === false;
     $label = $decorative ? null : ($label ?? __('Loading'));
 
-    $attributes = $attributes
-        ->class([
-            'inline-flex shrink-0 items-center justify-center',
-            'size-12' => ! $sized,
-            'rounded-corner-full bg-primary-container text-on-primary-container' => $contained,
-            'text-primary' => ! $contained && ! $coloured,
-        ])
-        ->merge(array_filter([
-            'role' => $decorative ? null : 'progressbar',
-            'aria-label' => $label,
-            'aria-hidden' => $decorative ? 'true' : null,
-        ]));
+    $attributes = $attributes->merge(array_filter([
+        'data-md-loading' => true,
+        'data-md-contained' => $contained ? true : null,
+        'role' => $decorative ? null : 'progressbar',
+        'aria-label' => $label,
+        'aria-hidden' => $decorative ? 'true' : null,
+    ], fn ($value): bool => $value !== null));
 @endphp
 
 <span {{ $attributes }}>
-    {{ \NoNameWeb\LivewireMaterial\Support\SvgFile::loadingIndicator(true, new \Illuminate\View\ComponentAttributeBag(['class' => 'size-full motion-reduce:hidden', 'aria-hidden' => 'true', 'focusable' => 'false'])) }}
-    {{ \NoNameWeb\LivewireMaterial\Support\SvgFile::loadingIndicator(false, new \Illuminate\View\ComponentAttributeBag(['class' => 'hidden size-full motion-reduce:block', 'aria-hidden' => 'true', 'focusable' => 'false'])) }}
+    {{ \NoNameWeb\LivewireMaterial\Support\SvgFile::loadingIndicator(true, new \Illuminate\View\ComponentAttributeBag(['data-md-loading-animated' => true, 'aria-hidden' => 'true', 'focusable' => 'false'])) }}
+    {{ \NoNameWeb\LivewireMaterial\Support\SvgFile::loadingIndicator(false, new \Illuminate\View\ComponentAttributeBag(['data-md-loading-still' => true, 'aria-hidden' => 'true', 'focusable' => 'false'])) }}
 </span>