livewire-material/resources/css/components/toast.css

/*
 * <x-toast>: the snackbar host — shows every toast queued behind it, one at a time.
 *
 * SnackbarTokens (androidx Compose Material 3, Apache-2.0): inverse-surface container,
 * inverse-on-surface text, an inverse-primary action, extra-small corners, elevation 3, 48px for
 * one line and 68px for two (SnackbarTokens.TwoLinesContainerHeight — the more precise of M3's
 * two published figures; the site's prose says 64dp). `[data-md-two-line]`, bound from whether
 * the current toast carries a description, pins the container to 68px instead of leaving it to
 * grow into it; below `medium` (600px), a two-line snackbar with an action wraps the action under
 * the text through `[data-md-toast-wrap]`, bound the same way — M3's "two lines with longer
 * action" configuration.
 *
 * It lifts above a bottom bar through `--material-bottom-bar`; `data-md-position="bottom-start"`
 * moves it to the start edge, with M3's margin growing from `medium`. resources/js/snackbar.js
 * publishes the snackbar's own height as `--material-snackbar-height`, so a FAB (fab.css) can
 * lift clear of it — M3 puts a snackbar above a FAB, never in front of or behind one (ACT-17).
 * Below `medium` it is full width; from there it hugs its line length, which an application's own
 * class can still bound.
 *
 * The action and the close button are both drawn at 40px but reach M3's 48px target (ACT-18) with
 * the same `::after` touch target the shared classes use (foundation/interaction.css); they draw
 * their own state layer and focus ring instead of those classes because the action's ink is
 * inverse-primary, not the button's inherited inverse-on-surface.
 *
 * It enters on a translate and a fade on the fast spatial spring, `@starting-style` giving both a
 * start. No state icon: M3 says to avoid one in a snackbar (ACT-20). The live region is the host
 * itself, in the page before any message is, never the snackbar that comes and goes (ACT-02);
 * resources/js/snackbar.js queues, times and dismisses a toast, including on Escape while it
 * holds the focus and on Alt+G, which moves the focus to one carrying an action (ACT-34).
 */

@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;

@import './icon.css';

@layer material.components {
    [data-md-toast] {
        position: fixed;
        z-index: 50;
        inset-inline: var(--md-sys-measurement-space200);
        bottom: calc(var(--material-bottom-bar, 0px) + var(--md-sys-measurement-space200));
        display: flex;
        justify-content: center;
        pointer-events: none;
    }

    [data-md-toast][data-md-position='bottom-start'] {
        justify-content: flex-start;
    }

    @media (width >= 600px) {
        [data-md-toast][data-md-position='bottom-start'] {
            inset-inline-start: var(--md-sys-measurement-space300);
        }
    }

    [data-md-toast-snackbar] {
        pointer-events: auto;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 12px;
        width: 100%;
        max-width: min(100%, 576px);
        min-height: var(--md-sys-measurement-space600);
        border-radius: var(--md-sys-shape-corner-xs);
        padding-block: 6px;
        padding-inline: var(--md-sys-measurement-space200) var(--md-sys-measurement-space100);
        background-color: var(--md-sys-color-inverse-surface);
        color: var(--md-sys-color-inverse-on-surface);
        box-shadow: var(--md-sys-elevation-3);
        translate: 0;
        opacity: 1;
        transition-property: translate, opacity;
        transition-duration: var(--md-sys-motion-spatial-fast-duration);
        transition-timing-function: var(--md-sys-motion-spatial-fast);

        @starting-style {
            translate: 0 16px;
            opacity: 0;
        }
    }

    [data-md-toast-snackbar][data-md-two-line] {
        min-height: 68px;
    }

    @media (width >= 600px) {
        [data-md-toast-snackbar] {
            width: auto;
            min-width: 344px;
        }
    }

    [data-md-toast-content] {
        min-width: 0;
        flex: 1 1 auto;
        padding-block: 6px;
    }

    @media (width < 600px) {
        [data-md-toast-content][data-md-toast-wrap] {
            flex-basis: 100%;
        }
    }

    [data-md-toast-title],
    [data-md-toast-description] {
        font: var(--md-sys-typescale-body-md);
        letter-spacing: var(--md-sys-typescale-body-md-tracking);
        font-variation-settings: normal;
    }

    :is([data-md-toast-action], [data-md-toast-dismiss]) {
        position: relative;
        isolation: isolate;
        flex-shrink: 0;
        border-radius: var(--md-sys-shape-corner-full);
        cursor: pointer;
        outline: none;

        &::before {
            content: '';
            position: absolute;
            inset: 0;
            z-index: -1;
            border-radius: inherit;
            background-color: currentColor;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--md-sys-motion-effects-fast-duration) var(--md-sys-motion-effects-fast);
        }

        &::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 100%;
            height: 100%;
            min-width: var(--md-sys-measurement-space600);
            min-height: var(--md-sys-measurement-space600);
            translate: -50% -50%;
        }

        @media (hover: hover) {
            &:hover::before {
                opacity: var(--md-sys-state-hover-state-layer-opacity);
            }
        }

        &:focus-visible {
            outline: 3px solid var(--md-sys-color-secondary);
            outline-offset: 2px;
        }

        &:focus-visible::before {
            opacity: var(--md-sys-state-focus-state-layer-opacity);
        }

        &:active::before {
            opacity: var(--md-sys-state-pressed-state-layer-opacity);
        }
    }

    [data-md-toast-action] {
        margin-inline-start: auto;
        height: var(--md-sys-measurement-space500);
        padding-inline: 12px;
        color: var(--md-sys-color-inverse-primary);
        font: var(--md-sys-typescale-label-lg);
        letter-spacing: var(--md-sys-typescale-label-lg-tracking);
        font-variation-settings: normal;
    }

    [data-md-toast-dismiss] {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: var(--md-sys-measurement-space500);
        height: var(--md-sys-measurement-space500);
    }
}