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livewire-material/resources/css/components/bottom-sheet.css
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Andreas Reinhold / reiniandClaude Opus 5 15e4fa7ed1 Slide the sheets and close the search view out in Firefox too 
The side sheet, the bottom sheet's panel and the docked search's scrim
and view kept `display` alive through their exit with
`transition-behavior: allow-discrete`. Firefox does not transition
`display` (Chrome 117 and Safari 18 do), and `x-show` sets
`display: none` in the frame the exit starts, so in Firefox the sheets
vanished instead of sliding out and the search view and scrim vanished
instead of fading. The docked search had a second problem in every
engine: neither the view nor the scrim had a closed state to transition
to, so where `display` was held (Chrome, Safari) the view stood at full
opacity for its duration and then disappeared.

Each element now carries `x-transition:enter`/`:leave="md-transition"`,
the approach the two sheet scrims already took (renamed from
`md-scrim-transition` to one name for all of them). The class only
switches Alpine to CSS-transition mode, so `x-show` holds `display` for
the element's computed transition-duration before hiding it, in every
engine, and a reopen during the exit cancels the pending hide; nothing
styles it. `display` and `allow-discrete` leave the transitions so
Chrome and Safari do not hold a second time. Alpine reads the first
`transition-duration` listed, which is the closing slide or fade in each
list (the preset panel lists translate before height). The search view
now closes back into the bar (opacity 0, `scale: 1 0.9`, the reverse of
its `@starting-style` entry) and its scrim fades out on close and when
the search turns full screen. Under reduced motion the durations are
zero and every one of them closes at once.

Four browser tests sample each exit mid-way in the page, in the same
round trip as the close: the sheets part of the way to their closed
offset, the search scrim and view part of the way faded, each still
displayed, then `display: none`. All four fail on main in Firefox (the
two search tests in Chrome too) and pass in Chrome, Firefox and Safari.
OverlayTest pins the drawer's new transition and the view's markup.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-16 20:26:45 +02:00

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/*
* `<x-bottom-sheet>`: M3's modal and standard bottom sheets (SheetBottomTokens.kt, androidx
* Compose Material 3, Apache-2.0; docs/reference/m3/
* components-actions-communication-containment.md § Bottom sheets → Specs).
*
* [data-md-bottom-sheet] the wrapper; data-md-open, data-md-standard
* [data-md-bottom-sheet-scrim] modal only
* [data-md-bottom-sheet-probe] hidden, measures a stop's px height for a drag to settle on
* [data-md-bottom-sheet-panel] surface-container-low, extra-large top corners, elevation 1;
* data-md-preset while `heights`/`snap` gives it stops
* [data-md-bottom-sheet-handle] the drag target and M3's 48dp hit area (C-01)
* [data-md-bottom-sheet-grip] the 32×4px bar, the shared classes' touch target
* [data-md-bottom-sheet-announce] a live region, only while stops exist
* [data-md-bottom-sheet-body], [data-md-bottom-sheet-title], [data-md-bottom-sheet-actions]
*
* 640px max width, centred; 28px top corners only (`DockedContainerShape` = CornerExtraLargeTop);
* 50dvh default open height under a ceiling of the screen less M3's 72dp top margin (C-19). It
* rises on emphasized decelerate and only falls on emphasized accelerate — the asymmetric timing a
* more specific selector for the open state supplies, since a CSS transition always takes its
* duration and easing from the *after-change* style (the technique resources/css/components/
* drawer.css also uses). `data-md-preset` adds the height-between-stops transition on the spatial
* spring, independent of the open/close slide.
*
* The handle's own 22px top/bottom padding (`SheetDefaults.kt`'s `DragHandleVerticalPadding`) is a
* literal — 22 is not on the measurement scale — matching alert.css's 12px for the same reason.
* The grip button draws the shared `md-focus-ring` and `md-touch-target` classes rather than a
* hand-rolled ring: its own visible bar is not a smaller indicator drawn inside a bigger box those
* classes cannot reach (unlike the datepicker's day) — the box they draw *is* the button's whole
* hit area. The one refinement is the ring's offset, 4px rather than 2px, as the old handle drew
* it: 2px from a 4px-tall bar leaves the ring hard to tell from the bar.
*
* The scrim fades out as it fades in, and the state rules match the root's own scrim and panel,
* so a sheet nested in an open one (a menu's sheet at compact inside a sheet) keeps its own state.
* Both keep `x-show`, and the view's `x-transition` holds their `display` through the exit rather
* than `allow-discrete`, which Firefox does not honour for `display` (see drawer.css); Alpine holds
* for the first `transition-duration` listed, so the closing slide is listed first.
*/
@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;
@layer material.components {
/* The scrim fades out while the view's `x-transition` holds its `display` (see drawer.css). */
[data-md-bottom-sheet-scrim] {
position: fixed;
inset: 0;
z-index: 40;
background-color: color-mix(in srgb, var(--md-sys-color-scrim) 32%, transparent);
opacity: 0;
transition-property: opacity;
transition-duration: var(--md-sys-motion-effects-default-duration);
transition-timing-function: var(--md-sys-motion-effects-default);
}
[data-md-bottom-sheet][data-md-open] > [data-md-bottom-sheet-scrim] {
opacity: 1;
}
@starting-style {
[data-md-bottom-sheet][data-md-open] > [data-md-bottom-sheet-scrim] {
opacity: 0;
}
}
[data-md-bottom-sheet-probe] {
position: fixed;
inset-inline-start: 0;
top: 0;
width: 0;
visibility: hidden;
pointer-events: none;
}
[data-md-bottom-sheet-panel] {
position: fixed;
inset-inline: 0;
bottom: 0;
z-index: 50;
display: flex;
width: 100%;
max-width: 640px;
margin-inline: auto;
flex-direction: column;
max-height: var(--sheet-max-height);
touch-action: pan-y;
border-radius: var(--md-sys-shape-corner-xl) var(--md-sys-shape-corner-xl) var(--md-sys-shape-corner-none) var(--md-sys-shape-corner-none);
background-color: var(--md-sys-color-surface-container-low);
color: var(--md-sys-color-on-surface);
box-shadow: var(--md-sys-elevation-1);
padding-bottom: var(--material-safe-bottom, env(safe-area-inset-bottom));
translate: 0 100%;
transition-property: translate;
transition-duration: var(--md-sys-motion-effects-default-duration);
transition-timing-function: var(--md-sys-motion-easing-emphasized-accelerate);
}
[data-md-bottom-sheet][data-md-open] > [data-md-bottom-sheet-panel] {
translate: 0 0;
transition-duration: var(--md-sys-motion-spatial-default-duration);
transition-timing-function: var(--md-sys-motion-easing-emphasized-decelerate);
}
@starting-style {
[data-md-bottom-sheet][data-md-open] > [data-md-bottom-sheet-panel] {
translate: 0 100%;
}
}
/* With stops the panel is the height of its current one, moving between them on the spatial
spring, independent of the translate that opens and closes the sheet. */
[data-md-bottom-sheet-panel][data-md-preset] {
height: var(--sheet-max-height);
transition-property: translate, height;
transition-duration: var(--md-sys-motion-effects-default-duration), var(--md-sys-motion-spatial-default-duration);
transition-timing-function: var(--md-sys-motion-easing-emphasized-accelerate), var(--md-sys-motion-spatial-default);
}
[data-md-bottom-sheet][data-md-open] > [data-md-bottom-sheet-panel][data-md-preset] {
transition-duration: var(--md-sys-motion-spatial-default-duration), var(--md-sys-motion-spatial-default-duration);
transition-timing-function: var(--md-sys-motion-easing-emphasized-decelerate), var(--md-sys-motion-spatial-default);
}
[data-md-bottom-sheet-handle] {
display: flex;
flex-shrink: 0;
justify-content: center;
padding-block: 22px;
cursor: grab;
}
[data-md-bottom-sheet-handle]:active {
cursor: grabbing;
}
[data-md-bottom-sheet-grip] {
width: 32px;
height: 4px;
border-radius: var(--md-sys-shape-corner-full);
background-color: var(--md-sys-color-on-surface-variant);
}
[data-md-bottom-sheet-grip]:focus-visible {
outline-offset: 4px;
}
[data-md-bottom-sheet-body] {
min-height: 0;
flex: 1 1 0%;
overflow-y: auto;
padding-inline: var(--md-sys-measurement-space300);
padding-bottom: var(--md-sys-measurement-space300);
}
[data-md-bottom-sheet-title] {
margin-bottom: var(--md-sys-measurement-space200);
font: var(--md-sys-typescale-title-lg);
letter-spacing: var(--md-sys-typescale-title-lg-tracking);
}
[data-md-bottom-sheet-actions] {
display: flex;
flex-shrink: 0;
flex-wrap: wrap;
align-items: center;
justify-content: flex-end;
gap: var(--md-sys-measurement-space100);
padding-inline: var(--md-sys-measurement-space300);
padding-bottom: var(--md-sys-measurement-space300);
}
}
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