/*
 * `<x-drawer>`: M3's side sheet, modal by default and co-planar as `standard` from 840px
 * (docs/reference/m3/components-actions-communication-containment.md § Side sheets → Specs; no
 * androidx Compose token file exists for it — Compose support is "Unavailable" per the site — so
 * the numbers come from the specs page and, for the standard variant's 0dp elevation,
 * material-components-android's `SideSheet.md`).
 *
 *   [data-md-drawer]                the wrapper; data-md-open, data-md-standard
 *     [data-md-drawer-scrim]        modal only (a standard sheet's is hidden from 840px)
 *     [data-md-drawer-sheet]        surface-container-low, elevation 1; data-md-side
 *       [data-md-drawer-head]       title/subtitle/close, and the separator's divider
 *         [data-md-drawer-head-row], [data-md-drawer-heading], [data-md-drawer-title],
 *         [data-md-drawer-subtitle], [data-md-drawer-close]
 *       [data-md-drawer-body]       a size container, so its contents lay out by the sheet's own
 *                                   width (`@md:`), never the viewport's
 *       [data-md-drawer-actions]    left-aligned, 72dp (C-10 — a dialog's are trailing-aligned)
 *
 * 400px cap, 24dp start/end padding, a large corner on the inner edge only — from the specs
 * table. It enters on the emphasized-decelerate easing rather than a spring, because a sheet
 * anchored to an edge that overshot would open a gap, and leaves on emphasized accelerate: the
 * view keeps `x-show`, so `@starting-style` gives the entry its start and `allow-discrete` holds
 * `display` through the exit, whose timing comes from the closed state's own rule (a transition
 * takes the after-change style's). Reduced motion zeroes both duration tokens (tokens/motion.css).
 * Below `expanded` it slides, from whichever edge `data-md-side` names in the document's direction;
 * once `standard` makes it co-planar it only fades (an in-flow box does not need to travel). Every
 * state rule matches the sheet and scrim as the root's children, so a sheet nested in an open one
 * keeps its own.
 *
 * A `standard` sheet drops the scrim, the trap and the elevation, and swaps surface-container-low
 * for `surface` with an outline-variant rule down its inner edge, in place of the scrim
 * (its anatomy's "Divider (optional)"). Below `expanded` (840px) it is the modal sheet — M3 caps
 * a side sheet at 400dp, and a 600px window has too little room left beside one, so the switch
 * sits at `expanded` rather than `medium`. `data-md-drawer-collapsed` (the view, from the
 * `wide` — window ≥ 840px — Alpine state) takes the standard sheet out of the layout entirely
 * while it is closed there, so the content beside it fills the space.
 */

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

@import './button.css';
@import './divider.css';

@layer material.components {
    /* The scrim fades in and, while `display` is held by `allow-discrete`, back out. */
    [data-md-drawer-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, display;
        transition-duration: var(--md-sys-motion-effects-default-duration);
        transition-timing-function: var(--md-sys-motion-effects-default);
        transition-behavior: allow-discrete;
    }

    [data-md-drawer][data-md-open] > [data-md-drawer-scrim] {
        opacity: 1;
    }

    @starting-style {
        [data-md-drawer][data-md-open] > [data-md-drawer-scrim] {
            opacity: 0;
        }
    }

    /* Closed, the sheet waits one width past its own edge (`--sheet-offset`, mirrored in RTL) and
       slides there on emphasized accelerate; open, it comes back on emphasized decelerate. */
    [data-md-drawer-sheet] {
        --sheet-offset: 100%;

        position: fixed;
        top: var(--material-safe-top, env(safe-area-inset-top));
        bottom: 0;
        z-index: 50;
        display: flex;
        width: 100%;
        flex-direction: column;
        overflow-y: auto;
        padding: var(--md-sys-measurement-space300);
        background-color: var(--md-sys-color-surface-container-low);
        color: var(--md-sys-color-on-surface);
        box-shadow: var(--md-sys-elevation-1);
        translate: var(--sheet-offset) 0;
        transition-property: translate, display;
        transition-duration: var(--md-sys-motion-effects-default-duration);
        transition-timing-function: var(--md-sys-motion-easing-emphasized-accelerate);
        transition-behavior: allow-discrete;
    }

    [data-md-drawer-sheet][data-md-side='end'] {
        inset-inline-end: 0;
    }

    [data-md-drawer-sheet][data-md-side='start'] {
        --sheet-offset: -100%;

        inset-inline-start: 0;
    }

    [data-md-drawer-sheet][data-md-side='end']:dir(rtl) {
        --sheet-offset: -100%;
    }

    [data-md-drawer-sheet][data-md-side='start']:dir(rtl) {
        --sheet-offset: 100%;
    }

    [data-md-drawer][data-md-open] > [data-md-drawer-sheet] {
        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-drawer][data-md-open] > [data-md-drawer-sheet] {
            translate: var(--sheet-offset) 0;
        }
    }

    @media (width >= 600px) {
        [data-md-drawer-sheet] {
            width: var(--sheet-width);
            max-width: calc(100vw - 64px);
        }

        [data-md-drawer-sheet][data-md-side='end'] {
            border-start-start-radius: var(--md-sys-shape-corner-lg);
            border-end-start-radius: var(--md-sys-shape-corner-lg);
        }

        [data-md-drawer-sheet][data-md-side='start'] {
            border-start-end-radius: var(--md-sys-shape-corner-lg);
            border-end-end-radius: var(--md-sys-shape-corner-lg);
        }
    }

    /* Co-planar from expanded: sticky beside the content, no scrim, no elevation, flat on
       `surface` with an outline-variant rule down the inner edge instead. It only fades here —
       an in-flow box does not travel like an overlay does. */
    @media (width >= 840px) {
        [data-md-drawer][data-md-standard] {
            position: sticky;
            top: 0;
            height: 100dvh;
            flex-shrink: 0;
            align-self: flex-start;
        }

        [data-md-drawer][data-md-standard][data-md-drawer-collapsed] {
            display: none;
        }

        [data-md-drawer][data-md-standard] > [data-md-drawer-scrim] {
            display: none;
        }

        [data-md-drawer][data-md-standard] > [data-md-drawer-sheet] {
            position: relative;
            top: 0;
            z-index: auto;
            height: 100%;
            translate: 0 0;
            border-radius: var(--md-sys-shape-corner-none);
            background-color: var(--md-sys-color-surface);
            box-shadow: none;
            opacity: 0;
            transition-property: opacity, display;
            transition-duration: var(--md-sys-motion-effects-default-duration);
            transition-timing-function: var(--md-sys-motion-easing-emphasized-accelerate);
        }

        [data-md-drawer][data-md-standard][data-md-open] > [data-md-drawer-sheet] {
            opacity: 1;
            transition-duration: var(--md-sys-motion-spatial-default-duration);
            transition-timing-function: var(--md-sys-motion-easing-emphasized-decelerate);
        }

        @starting-style {
            [data-md-drawer][data-md-standard][data-md-open] > [data-md-drawer-sheet] {
                translate: 0 0;
                opacity: 0;
            }
        }

        [data-md-drawer][data-md-standard] > [data-md-drawer-sheet][data-md-side='end'] {
            border-inline-start: 1px solid var(--md-sys-color-outline-variant);
        }

        [data-md-drawer][data-md-standard] > [data-md-drawer-sheet][data-md-side='start'] {
            border-inline-end: 1px solid var(--md-sys-color-outline-variant);
        }
    }

    [data-md-drawer-head] {
        margin-bottom: var(--md-sys-measurement-space200);
    }

    [data-md-drawer-head-row] {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 12px;
    }

    [data-md-drawer-heading] {
        min-width: 0;
    }

    [data-md-drawer-title] {
        font: var(--md-sys-typescale-title-lg);
        letter-spacing: var(--md-sys-typescale-title-lg-tracking);
    }

    [data-md-drawer-subtitle] {
        margin-top: var(--md-sys-measurement-space50);
        color: var(--md-sys-color-on-surface-variant);
        font: var(--md-sys-typescale-body-md);
        letter-spacing: var(--md-sys-typescale-body-md-tracking);
    }

    [data-md-drawer-close] {
        display: inline-flex;
        flex-shrink: 0;
        margin-top: calc(-1 * var(--md-sys-measurement-space100));
        margin-inline-end: -12px;
    }

    [data-md-drawer-head] > [data-md-divider] {
        margin-top: var(--md-sys-measurement-space200);
    }

    [data-md-drawer-body] {
        container-type: inline-size;
        flex: 1 1 0%;
    }

    [data-md-drawer-actions] {
        display: flex;
        min-height: var(--md-sys-measurement-space900);
        flex-shrink: 0;
        flex-wrap: wrap;
        align-items: center;
        justify-content: flex-start;
        gap: var(--md-sys-measurement-space100);
        padding-top: var(--md-sys-measurement-space200);
    }
}