Draw the datepicker's controls from the shared classes, in px

Plan step 36 review of 72d9dbfc. The year, the three menu buttons and
the docked lists' options hand-rolled md-state-layer and md-focus-ring
on themselves, in their own ink, on the claim that each was a bigger box
than an indicator inside it; only the day is. They now render the
classes, with the option's inset ring as the one refinement. The day
keeps its own layer on the 40px indicator, now at M3's state-opacity
tokens, gone from a disabled or blank day (a focused disabled day still
showed it), and in its own stacking context so it lies over a chosen
day's primary fill instead of under it.

The month announcement is md-visually-hidden again, not a hook with a
copy of its clip. The stylesheet kept every length in rem although the
commit said px: sizes are now px, spacing the measurement tokens, and
disabled ink the 38% state token, as search and slider were drawn. The
view header's "below sm" is 600px, medium.

Six browser assertions still read the old unprefixed hooks
(dataset.presentation, data-selected, data-between, data-start,
data-end); one of them would have passed vacuously.

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

tests/Feature/Components/DatepickerTest.php

@@ -3,6 +3,7 @@
 use Carbon\CarbonImmutable;
 use Livewire\Component;
 use Livewire\Livewire;
+use NoNameWeb\LivewireMaterial\Tests\Support\ComponentStylesheet;
 
 /**
  * The JSON config handed to `materialDatepicker(…)`, decoded.
@@ -97,6 +98,35 @@ it('names each dropdown so Shift+M and Shift+Y can reach it', function () {
         ->toContain('data-md-datepicker-menu-button="years"');
 });
 
+it('draws the year, the menu buttons and the list options from the interaction classes', function () {
+    $html = (string) $this->blade('<x-datepicker id="expires" label="Expires on" />');
+    $css = ComponentStylesheet::read('datepicker');
+
+    expect(preg_match_all('/class="md-state-layer md-focus-ring"\s+data-md-datepicker-menu-button=/', $html))->toBe(3)
+        ->and(preg_match_all('/class="md-state-layer md-focus-ring"\s+data-md-datepicker-year\b/', $html))->toBe(1)
+        ->and(preg_match_all('/class="md-state-layer md-focus-ring"\s+data-md-datepicker-option\b/', $html))->toBe(2)
+        ->and($html)->toContain('<span id="expires-month" class="md-visually-hidden" aria-live="polite" x-text="monthYear"></span>')
+        // Nothing in the stylesheet takes back what the classes draw…
+        ->and($css->declarations('[data-md-datepicker-menu-button]'))->not->toHaveKeys(['position', 'isolation', 'outline'])
+        ->and($css->declarations('[data-md-datepicker-year]'))->not->toHaveKeys(['position', 'isolation', 'outline'])
+        ->and($css->declarations('[data-md-datepicker-option]'))->not->toHaveKeys(['position', 'isolation', 'outline'])
+        // …but the option's ring, which sits inside its full-width row.
+        ->and($css->declarations('[data-md-datepicker-option]:focus-visible'))->toBe(['outline-offset' => '-3px']);
+});
+
+it('draws the day\'s state layer on its indicator at M3\'s state opacities, and none on a disabled day', function () {
+    $css = ComponentStylesheet::read('datepicker');
+
+    expect($css->declarations('[data-md-datepicker-day] > span::before'))->toMatchArray(['background-color' => 'var(--datepicker-layer)', 'opacity' => '0', 'z-index' => '-1'])
+        ->and($css->declarations('[data-md-datepicker-day] > span'))->toMatchArray(['width' => '40px', 'height' => '40px', 'isolation' => 'isolate'])
+        ->and($css->declarations('[data-md-datepicker-day]:hover > span::before', ['@media (hover: hover)']))->toBe(['opacity' => 'var(--md-sys-state-hover-state-layer-opacity)'])
+        ->and($css->declarations('[data-md-datepicker-day]:focus-visible > span::before'))->toBe(['opacity' => 'var(--md-sys-state-focus-state-layer-opacity)'])
+        ->and($css->declarations('[data-md-datepicker-day]:active > span::before'))->toBe(['opacity' => 'var(--md-sys-state-pressed-state-layer-opacity)'])
+        ->and($css->declarations("[data-md-datepicker-day]:is([aria-disabled='true'], [data-md-blank]) > span::before"))->toBe(['display' => 'none'])
+        ->and($css->declarations('[data-md-datepicker-day]:focus-visible > span'))->toBe(['outline' => '3px solid var(--md-sys-color-secondary)', 'outline-offset' => '2px'])
+        ->and($css->declarations('[data-md-datepicker-day]'))->toMatchArray(['height' => '48px']);
+});
+
 it('falls back to the docked picker for an unknown mode', function () {
     expect(datepickerConfig((string) $this->blade('<x-datepicker label="Date" mode="wheel" />'))['mode'])->toBe('docked');
 });