{{-- A section that opens to show more: an FAQ answer, advanced settings.

     Not an M3 component; built on the native `<details>` so it opens without script, keeps its
     state through a Livewire morph (`wire:ignore.self` stops the server's HTML from closing it),
     and is announced as a disclosure. Drawn in M3's terms: a title-medium `title` (or a
     `heading` slot), an optional leading `icon`, a chevron that turns over on the spatial spring,
     and — where the browser supports animating `details` content (`interpolate-size`) — a height
     that eases open on the same spring (`data-collapse`, resources/css/components/collapse.css).
     `open` starts it open. `variant`: `plain` (the default, on the surface around
     it) or `filled` (a surface-container tile with a large corner).

     Its open state can be bound, both ways:
     - `wire:model` (any modifiers; `.live` tells the server at once) entangles it with a Livewire
       boolean property. The server renders `open` from the property, so the first paint matches it
       and `open` is ignored; toggling writes the property, and the property changing opens or
       closes it.
     - `x-model` binds an Alpine property through `x-modelable`; `open` is then only the first
       paint, until Alpine starts and applies the property.
     The state lives in `collapseOpen` on the `<details>`, a name kept clear of `open`, which a
     dialog inside the slot may be reading from a scope around it. Without a binding there is no
     Alpine on it at all. --}}

@props([
    'title' => null,
    'icon' => null,
    'open' => false,
    'variant' => 'plain',
])

@php
    $model = $attributes->wire('model')->value() ?: null;
    $bound = $model !== null || count($attributes->whereStartsWith('x-model')->getAttributes()) > 0;
    $expanded = (bool) $open;

    if ($model !== null && ($component = \Livewire\Livewire::current()) !== null) {
        $expanded = (bool) data_get($component, $model);
    }
@endphp

<details
    wire:ignore.self
    data-collapse
    @if ($bound)
        x-data="{ collapseOpen: @if ($model !== null) @entangle($attributes->wire('model')) @else @js($expanded) @endif }"
        @if ($model === null) x-modelable="collapseOpen" @endif
        x-effect="$el.open = collapseOpen"
        x-on:toggle="collapseOpen = $el.open"
    @endif
    @if ($expanded) open @endif
    {{ $attributes->whereDoesntStartWith('wire:model')->class([
        'group/collapse [interpolate-size:allow-keywords]',
        'rounded-corner-lg bg-surface-container' => $variant === 'filled',
    ]) }}
>
    <summary @class([
        'state-layer focus-ring flex min-h-12 cursor-pointer list-none items-center gap-3 rounded-[inherit] type-title-md [&::-webkit-details-marker]:hidden',
        'px-4' => $variant === 'filled',
    ])>
        @if ($icon)
            <x-livewire-material::icon :name="$icon" class="size-6 text-on-surface-variant" />
        @endif

        <span class="min-w-0 flex-1">{{ $heading ?? $title }}</span>

        <x-livewire-material::icon name="expand_more" class="size-6 text-on-surface-variant transition-[rotate] duration-(--md-sys-motion-spatial-fast-duration) ease-spatial-fast group-open/collapse:rotate-180" />
    </summary>

    <div @class(['pb-4 type-body-md text-on-surface-variant', 'px-4' => $variant === 'filled', 'pt-1'])>
        {{ $slot }}
    </div>
</details>