/**
 * OpenStation — Files-on-the-Desktop tile + layer styles.
 *
 * The layer is an absolutely-positioned container inside
 * `#os-area`; tiles inside use absolute positioning
 * keyed off `(x, y)` coordinates persisted server-side.
 *
 * Tiles are intentionally close to the look of `os-icon`
 * (the plugin-shortcut tiles) so the desktop reads as one
 * coherent surface — but they live in their own class namespace
 * (`os-file-tile`) so plugins can theme each rail
 * independently.
 *
 * @since 0.9.0
 */

/*
 * Unified rail (since 0.9.0): plugin shortcuts now ride on the
 * same files layer as folders / posts / etc — they're a
 * `'shortcut'` file type. The legacy `.os-icons` DIV
 * still renders for backwards compatibility (existing tests and
 * non-files-active code paths), but when a files layer is
 * mounted as a sibling we hide it so we don't end up with two
 * rails competing for the same wallpaper.
 */
#os-area:has( > .os-files-layer ) > .os-icons {
	display: none;
}

/*
 * Drop-target highlight — the `data-files-drop-active` attribute
 * is set on the FilesLayer host (desktop area or folder window
 * body) while a shortcut payload is being dragged over it.
 *
 * Marching-ants animation makes the affordance unmissable even
 * against the busiest wallpaper, and the soft inner glow draws
 * the eye when the user is "shopping" for a drop target. Both
 * effects respect prefers-reduced-motion below.
 *
 * @since 0.18.0; visuals strengthened in 0.20.0.
 */
@keyframes os-drop-marching-ants {
	to {
		background-position: 24px 0, -24px 0, 0 24px, 0 -24px;
	}
}

[ data-files-drop-active ] {
	position: relative;
	outline: 3px dashed var( --wp-admin-theme-color, #2271b1 );
	outline-offset: -8px;
	background-image:
		linear-gradient(
			90deg,
			rgba( 34, 113, 177, 0.45 ) 50%,
			transparent 0
		),
		linear-gradient(
			90deg,
			rgba( 34, 113, 177, 0.45 ) 50%,
			transparent 0
		),
		linear-gradient(
			0deg,
			rgba( 34, 113, 177, 0.45 ) 50%,
			transparent 0
		),
		linear-gradient(
			0deg,
			rgba( 34, 113, 177, 0.45 ) 50%,
			transparent 0
		);
	background-repeat: repeat-x, repeat-x, repeat-y, repeat-y;
	background-size: 12px 3px, 12px 3px, 3px 12px, 3px 12px;
	background-position: 0 6px, 0 calc( 100% - 6px ), 6px 0, calc( 100% - 6px ) 0;
	box-shadow: inset 0 0 32px 4px rgba( 34, 113, 177, 0.12 );
	animation: os-drop-marching-ants 0.6s linear infinite;
	transition: box-shadow 0.18s ease-out;
}

@media ( prefers-reduced-motion: reduce ) {
	[ data-files-drop-active ] {
		animation: none;
	}
}

.os-files-layer {
	position: absolute;
	inset: 0;
	z-index: 0;
	/*
	 * Layer doesn't intercept pointer events itself — tiles and
	 * the wallpaper own that. Phase 4's wallpaper context menu
	 * binds clicks on the parent `#os-area`, which is
	 * unblocked because of this rule.
	 */
	pointer-events: none;
}

/*
 * Live drop-cell preview. A soft outline that hovers at the cell
 * the dropped tile will land in, so the user can predict where the
 * grid snap will place it before releasing. Positioned absolutely
 * inside the files layer; `translate3d` updated from JS on every
 * pointermove while a desktop-file drag hovers the canvas.
 *
 * The tile dimensions are baked into `grid.ts` (88 × 96 visual,
 * 96 × 110 cell pitch). The outline matches the cell pitch — slightly
 * larger than the tile — so the highlight reads as "this slot" rather
 * than "this tile."
 *
 * @since 0.20.0
 */
.os-files-drop-preview {
	position: absolute;
	top: 0;
	left: 0;
	width: 88px;
	height: 96px;
	pointer-events: none;
	box-sizing: border-box;
	border-radius: 12px;
	background: var(
		--os-drop-preview-bg,
		rgba( 34, 113, 177, 0.08 )
	);
	border: 2px dashed
		var(
			--os-drop-preview-border,
			rgba( 34, 113, 177, 0.55 )
		);
	transition: transform 90ms ease-out;
	will-change: transform;
	/* Sit BELOW tiles so a tile being dragged over the cell isn't
	 * visually clipped by the dashed outline; the outline still reads
	 * because the tile is semi-transparent during drag (`--dragging`
	 * sets `opacity: 0.4`). */
	z-index: 0;
}

@media ( prefers-reduced-motion: reduce ) {
	.os-files-drop-preview {
		transition: none;
	}
}

.os-file-tile {
	pointer-events: auto;
	position: absolute;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: flex-start;
	gap: 6px;
	/*
	 * `box-sizing` is load-bearing, not housekeeping. Without it the
	 * horizontal padding is ADDED to the declared width, so an 88px
	 * tile occupies 96px — which was exactly the desktop's old cell
	 * pitch, and why icons sat edge to edge with no gap at all while
	 * the maths insisted there were 8px between them.
	 *
	 * The tile is the size the grid says it is. Padding lives inside.
	 */
	box-sizing: border-box;
	width: var( --os-tile-w, 88px );
	/*
	 * Fixed, not minimum. The tile box IS the selection ring, and a
	 * box that grows with its label gives a row of selected icons a
	 * ragged top edge — one height per label that happened to wrap
	 * to two lines. Every tile occupies its cell; short labels leave
	 * the slack inside the ring, where it reads as padding.
	 */
	height: var( --os-tile-h, 104px );
	padding: 8px 4px;
	border: 0;
	background: transparent;
	/* Tile foreground driven by `--os-tile-fg` so any
	 * light-on-dark surface (folder window, My WordPress preview)
	 * can retint tiles by overriding the variable in its scope —
	 * no per-surface selectors needed here. */
	color: var( --os-tile-fg, var( --os-fg, #fff ) );
	cursor: pointer;
	border-radius: 8px;
	transition: background-color 0.15s ease, transform 0.05s linear;
	-webkit-user-select: none;
	user-select: none;
	touch-action: none;
	/* Soft fade-in on mount — each tile carries its own randomised
	 * `--enter-delay` / `--enter-duration` (set inline by the
	 * tile builder), so a freshly-painted grid reads as a cascade
	 * rather than a synchronised pop-in. Both values land in the
	 * decimal-of-a-second range — perceivable, never sluggish.
	 *
	 * `backwards` keeps the tile invisible during its delay so the
	 * cascade is honest; the animation runs once, leaves the tile
	 * at its static `opacity: 1`, and never re-fires from later
	 * state changes (drag, hover, drop-target).
	 */
	animation: os-file-tile-enter
		var( --os-file-tile-enter-duration, 0.4s )
		ease-out
		var( --os-file-tile-enter-delay, 0s )
		backwards;
}

@keyframes os-file-tile-enter {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

@media ( prefers-reduced-motion: reduce ) {
	.os-file-tile {
		animation: none;
	}
}

.os-file-tile:hover,
.os-file-tile:focus-visible {
	background: var(
		--os-tile-hover-bg,
		rgba( 255, 255, 255, 0.12 )
	);
	outline: none;
}

.os-file-tile:focus-visible {
	/* Inset focus ring — outset rings extended past the tile and
	 * visually overlapped the colindant icon when the canvas cell
	 * pitch is tight (96 px cell, 88 px tile → only 4 px clearance
	 * per side). Inset keeps the ring fully inside the tile. */
	box-shadow: inset 0 0 0 2px
		var( --os-tile-focus-ring, var( --wp-admin-theme-color, #2271b1 ) );
}

/* Status ribbon sizing inside tiles. The `<os-ribbon>` defaults
 * are tuned for cards (~90 px clipping window); 88 px-wide tiles
 * need a tighter footprint or the ribbon dominates the icon. We
 * override the component's CSS custom-property theming surface so
 * the ribbon stays a small accent in the corner. Authors who want
 * different sizing can override per-tile or per-section. */
.os-file-tile > os-ribbon {
	--os-ui-ribbon-size: 48px;
	--os-ui-ribbon-banner-width: 72px;
	--os-ui-ribbon-banner-offset: 12px;
	--os-ui-ribbon-banner-pull: -18px;
	--os-ui-ribbon-padding: 1px 0;
	--os-ui-ribbon-font: 700 7px/1.4 var( --os-font, system-ui );
	--os-ui-ribbon-tracking: 0.05em;
	--os-ui-ribbon-shadow: 0 1px 2px rgba( 0, 0, 0, 0.2 );
}

.os-file-tile--dragging {
	/* The DragManager renders a separate ghost element that follows
	 * the pointer; the SOURCE tile stays in place but is dimmed so
	 * the user has a stable reference for "this is what I'm
	 * dragging."
	 *
	 * @since 0.18.0
	 */
	opacity: 0.4;
	cursor: grabbing;
}

/* Pinned tiles ("My WordPress", Recycle Bin) anchor to a fixed slot
 * and DO NOT wire drag — but they look + behave identically to any
 * other tile until the user attempts a drag (which silently fails).
 * No upfront visual cue: feedback now happens at the moment of the
 * gesture, not before, per @since 0.9.0 design feedback.
 *
 * Default `cursor: pointer` from the base `.os-file-tile`
 * rule covers click-to-open. Touch interactions stay as
 * `touch-action: auto` so the OS scroll gesture works on top of
 * the tile.
 */
.os-file-tile--pinned {
	touch-action: auto;
}

/* Folder tile is the drop target during a cross-window shortcut
 * drag — the user dragged a post / page / user tile out of My
 * WordPress and is hovering over a folder. Bright outline, soft
 * pulse, and a slight scale so the folder reads unmistakably as
 * "yes, drop here." @since 0.8.0; pulse added 0.20.0. */
@keyframes os-drop-target-pulse {
	0% {
		box-shadow:
			0 0 0 0 rgba( 34, 113, 177, 0.5 ),
			inset 0 0 0 2px var( --wp-admin-theme-color, #2271b1 );
	}
	100% {
		box-shadow:
			0 0 0 8px rgba( 34, 113, 177, 0 ),
			inset 0 0 0 2px var( --wp-admin-theme-color, #2271b1 );
	}
}

.os-file-tile--drop-target {
	outline: 2px solid var( --wp-admin-theme-color, #2271b1 );
	outline-offset: -4px;
	background: rgba( 34, 113, 177, 0.2 );
	transform: scale( 1.08 );
	z-index: 5;
	animation: os-drop-target-pulse 1s ease-out infinite;
	border-radius: 12px;
}

@media ( prefers-reduced-motion: reduce ) {
	.os-file-tile--drop-target {
		animation: none;
	}
}

/* Drop-hint chip — floats next to the cursor during a drag and
 * shows context-aware text ("Drop here to create shortcut",
 * "Can't drop here", etc.). The chip text is owned by the
 * ghost module (`src/drag/ghost.ts`); these styles control the
 * appearance per accept/reject/neutral mode.
 *
 * @since 0.20.0
 */
.os-drag-hint {
	position: fixed;
	top: 0;
	left: 0;
	padding: 6px 10px;
	border-radius: 999px;
	font-size: 12px;
	font-weight: 600;
	letter-spacing: 0.02em;
	white-space: nowrap;
	pointer-events: none;
	user-select: none;
	box-shadow: 0 4px 14px rgba( 0, 0, 0, 0.22 );
	background: rgba( 30, 30, 30, 0.85 );
	color: var( --os-ui-fg-on-accent, #fff );
	z-index: 2147483647;
	transition:
		background-color 0.12s ease,
		color 0.12s ease,
		transform 0.06s ease-out;
}

.os-drag-hint--neutral {
	background: rgba( 30, 30, 30, 0.85 );
	color: var( --os-ui-fg-on-accent, #fff );
}

.os-drag-hint--accept {
	background: #1e8449;
	color: var( --os-ui-fg-on-accent, #fff );
	box-shadow:
		0 0 0 2px rgba( 30, 132, 73, 0.25 ),
		0 6px 18px rgba( 30, 132, 73, 0.3 );
}

.os-drag-hint--accept::before {
	/* Tiny checkmark chevron prefix so "Drop here" reads as an
	 * actionable affirmation rather than a passive label. The
	 * checkmark is a real character (U+2713) so screen readers
	 * skip past it via the `aria-hidden` on the host chip. */
	content: '✓ ';
}

.os-drag-hint--reject {
	background: var( --os-ui-danger-hover, #b32d2e );
	color: var( --os-ui-fg-on-accent, #fff );
	box-shadow:
		0 0 0 2px rgba( 179, 45, 46, 0.25 ),
		0 6px 18px rgba( 179, 45, 46, 0.3 );
}

.os-drag-hint--reject::before {
	content: '⊘ ';
}

/*
 * No body-level cursor swap during drag — the user prefers the
 * default arrow cursor regardless of state, so the accept/reject
 * feedback lives entirely in the hint chip + outline animation.
 * Don't reintroduce a `cursor: grabbing/copy/no-drop` here.
 */

/* Shortcut overlay — small arrow badge in the BOTTOM-RIGHT corner
 * of the icon visual on any tile that's a reference to an external
 * entity (post, attachment, comment, user, term — anything that
 * ISN'T a folder or a plugin shortcut). Mirrors the macOS / Windows
 * convention of an arrow decoration on alias/shortcut icons.
 *
 * The geometry: tile is 88px wide with `padding: 8px 4px`. The icon
 * visual is 48×48 centered horizontally, so the icon's bottom-right
 * corner lands at roughly (68, 56) from the tile's top-left. The
 * 18×18 arrow circle is anchored just inside that corner so it
 * reads as part of the icon, not floating off in space.
 *
 * @since 0.8.0
 */
/* Only real placements get the badge — i.e. tiles built by
 * `buildTile(placement)` on the desktop / folder windows, which
 * are the only surface where "this is a shortcut" actually means
 * something. Tiles in My WordPress grids (and any future content
 * surface) are the entity, not a shortcut to it, so the arrow
 * would just be noise. `[data-placement-id]` is the canonical
 * placement marker. */
.os-file-tile[ data-placement-id ][ data-file-type="post" ]::after,
.os-file-tile[ data-placement-id ][ data-file-type="attachment" ]::after,
.os-file-tile[ data-placement-id ][ data-file-type="comment" ]::after,
.os-file-tile[ data-placement-id ][ data-file-type="user" ]::after,
.os-file-tile[ data-placement-id ][ data-file-type="term" ]::after {
	content: "↗";
	position: absolute;
	right: 14px;
	top: 44px;
	width: 18px;
	height: 18px;
	border-radius: 50%;
	background: var( --os-tile-shortcut-bg, rgba( 0, 0, 0, 0.65 ) );
	color: var( --os-tile-shortcut-fg, #fff );
	font-size: 11px;
	line-height: 18px;
	text-align: center;
	box-shadow: var(
		--os-tile-shortcut-shadow,
		0 1px 3px rgba( 0, 0, 0, 0.5 )
	);
	pointer-events: none;
}

/*
 * Missing files (the underlying entity was deleted but the
 * placement still exists) render the tile dimmed so the user
 * can right-click → Remove without confusing it for an active
 * file. Phase 6's per-placement permission re-check uses the
 * same affordance for "you can't see this" placeholders.
 */
.os-file-tile--missing {
	opacity: 0.5;
}

/**
 * Access-gated tile — the recipient sees the icon (the owner
 * shared the folder containing it) but lacks `can_read` on the
 * underlying entity. Dim the tile, kill the pointer affordance,
 * and overlay a lock badge so the state reads at a glance.
 */
.os-file-tile--access-gated {
	opacity: 0.65;
	cursor: not-allowed;
}
.os-file-tile--access-gated .os-file-tile__visual,
.os-file-tile--access-gated .os-file-tile__preview {
	filter: grayscale( 0.6 );
}
.os-file-tile--access-gated:hover,
.os-file-tile--access-gated:focus-visible {
	background: var( --os-ui-hover, rgba( 0, 0, 0, 0.06 ) );
}
.os-file-tile__lock {
	position: absolute;
	top: 4px;
	inset-inline-end: 4px;
	width: 20px;
	height: 20px;
	border-radius: 50%;
	background: var( --os-ui-scrim, rgba( 0, 0, 0, 0.7 ) );
	color: var( --os-ui-fg-on-accent, #fff );
	font-size: 14px;
	line-height: 20px;
	text-align: center;
	pointer-events: none;
	box-shadow: 0 1px 3px rgba( 0, 0, 0, 0.5 );
}

/**
 * Preview-pane empty state when a recipient selects a tile they
 * can't open. Big lock ring + clear copy + secondary hint. Designed
 * to read at a glance in the otherwise-busy preview column.
 */
.os-files__access-gated {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 16px;
	padding: 32px 24px;
	min-height: 240px;
	text-align: center;
	color: var( --os-fg, inherit );
}
.os-files__access-gated-ring {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 96px;
	height: 96px;
	border-radius: 50%;
	background: linear-gradient(
		145deg,
		rgba( 214, 54, 56, 0.22 ),
		rgba( 214, 54, 56, 0.08 )
	);
	border: 2px solid rgba( 214, 54, 56, 0.45 );
	box-shadow:
		inset 0 1px 0 rgba( 255, 255, 255, 0.08 ),
		0 8px 24px rgba( 214, 54, 56, 0.18 );
}
.os-files__access-gated-glyph {
	font-size: 44px;
	width: 44px;
	height: 44px;
	color: #ff8080;
	filter: drop-shadow( 0 1px 2px rgba( 0, 0, 0, 0.4 ) );
}
.os-files__access-gated-title {
	margin: 0;
	font-size: 17px;
	font-weight: 600;
	letter-spacing: 0.2px;
}
.os-files__access-gated-sub {
	margin: 0;
	font-size: 13px;
	line-height: 1.5;
	max-width: 340px;
	opacity: 0.85;
}
.os-files__access-gated-hint {
	margin: 0;
	font-size: 12px;
	line-height: 1.5;
	max-width: 340px;
	opacity: 0.6;
}

.os-file-tile__visual {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 48px;
	height: 48px;
	font-size: 32px;
	line-height: 1;
}

.os-file-tile__icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 48px;
	height: 48px;
	font-size: 32px;
	line-height: 1;
}

.os-file-tile__preview {
	width: 48px;
	height: 48px;
	object-fit: cover;
	border-radius: 4px;
}

/* `<img>` defaults to `draggable=true`, which lets the browser
 * start a native HTML5 image-drag from a pointerdown — that
 * pre-empts the DragManager's pointer-event-driven tile rearrange
 * and the tile silently refuses to move. The renderer also sets
 * `draggable="false"` on every `<img>` it produces; this CSS rule
 * covers anything injected later (plugin filters, decorators)
 * without having to remember the attribute. */
.os-file-tile img {
	-webkit-user-drag: none;
	user-select: none;
}

/*
 * Wallpaper + tile context menus use `<os-context-menu>` and
 * `<os-context-menu-option>` (Phase 4 / 0.9.0). Their host-level
 * styles live inside the component shadow DOM — see
 * `src/ui/components/os-context-menu/os-context-menu.styles.ts`.
 * No project CSS rules needed here; the legacy `.os-
 * wallpaper-menu*` rules were removed when the components landed.
 */

/*
 * Folder native window — the body of `os-folder-<id>`
 * contains a `FilesLayer` rendering that folder's contents.
 * We ensure the body has positioning context so absolutely-
 * positioned tiles inside the layer anchor correctly.
 */
.desktop-mode-folder-window {
	position: relative;
	min-height: 200px;
	/* Same window background recipe as My WordPress — defaults to
	 * the standard window bg (#fff) and themable per-window. */
	background: var(
		--os-folder-window-bg,
		var( --os-window-bg, #fff )
	);
	color: var( --os-fg-on-light, var( --os-ui-fg, #1d2327 ) );
	display: flex;
	flex-direction: column;
	/* Light-on-dark context: the folder window opens inside a
	 * standard window chrome whose body is white-ish. Retint the
	 * tile color tokens here so dashicons + labels read against
	 * a light background. Plugins / themes can override these
	 * same variables at any scope to retint further. */
	--os-tile-fg: var( --os-fg-on-light, var( --os-ui-fg, #1d2327 ) );
	/* Chains through the palette for the same reason as
	 * `--os-tile-fg` beside it: a bare literal here outranks the
	 * palette's own value and pins every tile's secondary line to
	 * near-black, which disappears the moment the surface is dark.
	 * The literal stays as the pre-brand floor. */
	--os-tile-fg-muted: var(
		--os-folder-window-fg-muted,
		var( --os-ui-fg-muted, rgba( 0, 0, 0, 0.55 ) )
	);
	--os-tile-hover-bg: rgba( 0, 0, 0, 0.06 );
	/* Light-context label rendering — share the same recipe with
	 * every other light-bg tile surface (My WordPress, future
	 * windows). One set of tokens, no per-surface duplication. */
	--os-tile-label-shadow: none;
	--os-tile-label-weight: 500;
	--os-tile-label-smoothing: antialiased;
	--os-tile-label-color: var( --os-fg-on-light, var( --os-ui-fg, #1d2327 ) );
}

/* Folder window's bottom status bar — paint with the same light-
 * context treatment My WordPress uses (transparent bg, soft border,
 * muted dark text). Without this, the wallpaper-targeted defaults
 * (`background: rgba(0,0,0,0.18); color: white`) would show as a
 * dark band against the white window bg. */
.desktop-mode-folder-window .os-folder-status-bar {
	border-top: 1px solid var( --os-ui-border, #dcdcde );
	background: transparent;
	color: var( --os-ui-fg-muted, #50575e );
}

.desktop-mode-folder-window
	.os-folder-status-bar
	button.os-folder-status-bar__segment:hover {
	background: var( --os-hover, var( --os-ui-hover, rgba( 0, 0, 0, 0.06 ) ) );
}

/* Generic breadcrumb header — any surface that grows a navigation
 * stack (folder window, My WordPress folder, future drill-down
 * windows) renders one of these via `renderBreadcrumbs` from
 * `src/desktop-files/breadcrumbs.ts`. Visual vocabulary: small
 * icon-only Back button on the left, `›`-separated crumb buttons,
 * current segment is bold + non-interactive.
 *
 * @since 0.8.0
 */
.os-breadcrumbs {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 6px 10px;
	border-bottom: 1px solid var( --os-ui-border, #dcdcde );
	background: transparent;
	flex: 0 0 auto;
}

.os-breadcrumbs__back {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 26px;
	height: 26px;
	padding: 0;
	border: 0;
	background: transparent;
	border-radius: 4px;
	cursor: pointer;
	color: inherit;
	flex: 0 0 auto;
}

.os-breadcrumbs__back:hover:not(:disabled),
.os-breadcrumbs__back:focus-visible:not(:disabled) {
	background: var( --os-hover, var( --os-ui-hover, rgba( 0, 0, 0, 0.06 ) ) );
	outline: none;
}

.os-breadcrumbs__back:disabled {
	opacity: 0.35;
	cursor: default;
}

.os-breadcrumbs__back .dashicons {
	font-size: 18px;
	width: 18px;
	height: 18px;
	line-height: 1;
}

.os-breadcrumbs__crumbs {
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 13px;
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.os-breadcrumbs__crumb {
	border: 0;
	background: transparent;
	color: var( --os-link, var( --os-ui-accent, #2271b1 ) );
	cursor: pointer;
	padding: 2px 4px;
	border-radius: 4px;
	font: inherit;
}

.os-breadcrumbs__crumb:hover {
	background: var( --os-hover, var( --os-ui-hover, rgba( 0, 0, 0, 0.06 ) ) );
}

.os-breadcrumbs__crumb--current {
	color: var( --os-fg-on-light, var( --os-ui-fg, #1d2327 ) );
	cursor: default;
	font-weight: 600;
}

.os-breadcrumbs__crumb--current:hover {
	background: transparent;
}

.os-breadcrumbs__sep {
	color: var( --os-ui-fg-muted, #787c82 );
}

.os-folder-window__layer {
	position: relative;
	flex: 1;
	min-height: 0;
	overflow: auto;
}

/* Two-pane shell — left: tile canvas, right: preview pane that
 * reflects the currently-selected tile. Same model as the My
 * WordPress two-pane view so the UX is unified.
 *
 * @since 0.8.0 */
.os-folder-window__split {
	display: grid;
	grid-template-columns: minmax( 240px, 60% ) minmax( 0, 1fr );
	flex: 1 1 auto;
	min-height: 0;
}

.os-folder-window__preview {
	overflow-y: auto;
	min-width: 0;
	background: var( --os-window-bg, #fff );
	border-inline-start: 1px solid var( --os-ui-border, #dcdcde );
	color: var( --os-fg-on-light, var( --os-ui-fg, #1d2327 ) );
}

/* Selected file tile — light-blue accent on the wallpaper, soft
 * accent inside light-context windows. Variable-driven so plugins
 * can retune. */
.os-file-tile--selected,
.os-file-tile--selected:hover {
	background: var(
		--os-tile-selected-bg,
		rgba( 34, 113, 177, 0.18 )
	);
	box-shadow: inset 0 0 0 1px
		var( --os-tile-focus-ring, var( --wp-admin-theme-color, #2271b1 ) );
}

/* Inside a folder window the selected highlight should read on
 * white. */
.desktop-mode-folder-window {
	--os-tile-selected-bg: rgba( 34, 113, 177, 0.12 );
}

/* Type breakdown under a multi-selection's count in a folder
 * window's preview pane. The count is the headline; this is the
 * detail that tells you which actions the menu will offer. */
.os-files-preview__selection-breakdown {
	font-size: 12px;
	opacity: 0.75;
}

/* While a rubber band is live, nothing in the shell is selectable.
 *
 * The band starts on bare canvas, which — unlike a tile — IS
 * selectable, so the browser begins its own text selection on the
 * same press and keeps extending it as the pointer travels. Inside
 * the canvas that stays invisible; drag out over another window and
 * it starts highlighting that window's text in blue, mid-gesture.
 *
 * The controller also refuses `selectstart` outright while the band
 * is up. This rule is the second half: it covers anything already
 * selectable that the event route misses. */
body[ data-os-marquee ] {
	-webkit-user-select: none;
	user-select: none;
}

/* Marquee (rubber-band) selection box. Painted by the shared
 * selection controller on any canvas that opts into it — the
 * wallpaper, folder windows, every My WordPress list — so this one
 * declaration dresses all of them.
 *
 * `pointer-events: none` is load-bearing: the box tracks under the
 * cursor for the whole gesture, and without it every hit-test
 * (drop targets, the controller's own tile lookup) would land on
 * the box instead of what's beneath it. */
.os-selection-marquee {
	position: absolute;
	z-index: 5;
	pointer-events: none;
	border: 1px solid
		var( --os-tile-focus-ring, var( --wp-admin-theme-color, #2271b1 ) );
	border-radius: 2px;
	/* A WASH, not a fill — the whole point of a rubber band is that
	 * you can see what it is about to catch. `--os-ui-accent-dim` is a
	 * solid hex (Pulse, one step back), so reaching for it directly
	 * paints an opaque rectangle over the icons; `--os-ui-accent-soft`
	 * is that same colour already taken down to a 14% wash, which is
	 * what every other ambient accent surface in the shell uses. */
	background: var(
		--os-selection-marquee-bg,
		var( --os-ui-accent-soft, rgba( 34, 113, 177, 0.14 ) )
	);
}

.os-folder-status-bar {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
	padding: 6px 12px;
	border-top: 1px solid rgba( 255, 255, 255, 0.08 );
	background: var( --os-ui-scrim, rgba( 0, 0, 0, 0.18 ) );
	color: var( --os-fg-muted, rgba( 255, 255, 255, 0.7 ) );
	font-size: 12px;
	flex-shrink: 0;
}

.os-folder-status-bar__cluster {
	display: flex;
	align-items: center;
	gap: 12px;
}

.os-folder-status-bar__segment {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	padding: 0;
	border: 0;
	background: transparent;
	color: inherit;
	font: inherit;
}

button.os-folder-status-bar__segment {
	cursor: pointer;
	border-radius: 4px;
	padding: 2px 6px;
}

button.os-folder-status-bar__segment:hover {
	background: rgba( 255, 255, 255, 0.1 );
}

.os-folder-status-bar__icon {
	font-size: 14px;
}

/*
 * File Associations OS Settings tab (Phase 5). One row per file
 * type: label on the left, a `<os-select>` of compatible
 * openers on the right. Color tokens use the OS-Settings-canonical
 * `--os-ui-fg-muted` so the tab inherits theme colors instead of
 * falling back to white-on-light invisibility.
 */
.os-file-associations__intro {
	display: block;
	margin: 0 0 16px;
	color: var( --os-ui-fg-muted, #50575e );
	font-size: 13px;
	line-height: 1.5;
}

.os-file-associations__list {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.os-file-associations__row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	padding: 8px 12px;
	background: var( --os-ui-hover, rgba( 0, 0, 0, 0.04 ) );
	border-radius: 6px;
}

.os-file-associations__label {
	font-weight: 500;
	flex: 1;
}

.os-file-associations__select {
	min-width: 220px;
}

.os-file-associations__none,
.os-file-associations__empty {
	color: var( --os-ui-fg-muted, #50575e );
	font-size: 12px;
}

/*
 * The shell's two built-in modals — "New folder" / "Rename", and the
 * web-link dialog, which reuses this class set for its surface. Both
 * are light-DOM overlays that slot `<os-text-field>` +
 * `<os-button>` for their controls.
 *
 * The surface reads the same `--os-ui-modal-*` family that
 * `<os-modal>` and `<os-confirm-dialog>` do, so the three look like
 * one dialog system and answer to a desktop theme together. Two
 * things it must NOT do, both of which it used to:
 *
 *   - Paint from `--os-bg`. That is the WALLPAPER token: the desk
 *     default is a gradient and the wallpaper layer overwrites it
 *     with whatever artwork is active. A dialog is a surface, not a
 *     desk. Same note as `os-modal.styles.ts`.
 *   - Style raw form controls. Core's `forms.css` reaches every
 *     `<input>` in the parent shell through `input[type="text"]` —
 *     (0,1,1), which outranks a single class of ours — so a plain
 *     input rendered as a white core-chrome box on this dark
 *     surface no matter what we declared. The controls live in
 *     shadow DOM now, where that sheet cannot follow.
 */
.os-create-folder-dialog__overlay {
	position: fixed;
	inset: 0;
	background: var( --os-ui-scrim, rgba( 0, 0, 0, 0.45 ) );
	/* Desktop-theme texture slot: unset resolves to none. Mirrors
	   the scrim treatment in os-modal. */
	background-image: var( --os-ui-scrim-image, none );
	background-repeat: var( --os-ui-scrim-image-repeat, repeat );
	background-size: var( --os-ui-scrim-image-size, auto );
	background-position: var( --os-ui-scrim-image-position, center );
	backdrop-filter: blur( 2px );
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 10000;
}

.os-create-folder-dialog {
	/*
	 * Re-point the shared control tokens for a dark dialog surface,
	 * exactly as `<os-modal>` does on its host. The slotted
	 * `<os-text-field>` / `<os-button>` inherit these across the
	 * shadow boundary, so the field resolves a dark input with light
	 * ink instead of the light-admin defaults (`--os-window-bg` is
	 * `#fff` in an unthemed shell, which under a light `--os-ui-fg`
	 * is the invisible-value trap the modal styles call out).
	 *
	 * Each reads a palette-owned `--os-ui-modal-*` name first, so a
	 * desktop theme can still reach every one of them; the literals
	 * are only the floor for a shell whose stylesheet never loaded.
	 */
	--os-ui-fg: var( --os-ui-modal-text, #f0f0f1 );
	--os-ui-fg-muted: var( --os-ui-modal-text-muted, #a7aaad );
	--os-ui-border: var( --os-ui-modal-border, rgba( 255, 255, 255, 0.25 ) );
	--os-window-bg: var( --os-ui-modal-field-bg, #2c3338 );
	--os-ui-button-bg-hover: var(
		--os-ui-modal-button-bg-hover,
		rgba( 255, 255, 255, 0.08 )
	);

	width: min( 420px, 92vw );
	/* Longhand, and a literal fallback: the shorthand would reset the
	   texture slot below, and a gradient is invalid as a
	   background-color — it would leave the dialog transparent. */
	background-color: var( --os-ui-modal-bg, #1d2327 );
	background-image: var( --os-ui-dialog-bg-image, none );
	background-repeat: var( --os-ui-dialog-bg-image-repeat, repeat );
	background-size: var( --os-ui-dialog-bg-image-size, auto );
	background-position: var( --os-ui-dialog-bg-image-position, center );
	color: var( --os-ui-modal-fg, var( --os-fg, #fff ) );
	border: 1px solid var( --os-ui-border, rgba( 255, 255, 255, 0.08 ) );
	border-radius: 10px;
	box-shadow: 0 20px 50px rgba( 0, 0, 0, 0.6 );
	padding: 20px 22px 18px;
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.os-create-folder-dialog__title {
	margin: 0 0 4px;
	font-size: 16px;
	font-weight: 600;
	color: var( --os-ui-fg, #f0f0f1 );
}

.os-url-dialog__description {
	margin: 0 0 4px;
	font-size: 12px;
	line-height: 1.5;
	color: var( --os-ui-fg-muted, #a7aaad );
}

.os-create-folder-dialog__error {
	margin: 0;
	color: var( --os-ui-danger-hover, #ff8a8a );
	font-size: 12px;
}

.os-create-folder-dialog__actions {
	display: flex;
	justify-content: flex-end;
	gap: 8px;
	margin-top: 6px;
}

/* The busy state dims the whole form area rather than the input
   alone — the buttons carry their own disabled treatment from
   os-button, and dimming one control of three read as a glitch. */
.os-create-folder-dialog--busy .os-create-folder-dialog__field {
	opacity: 0.7;
}

/*
 * Single label rule for every tile, regardless of host surface.
 * Visual properties read from `--os-tile-label-*`
 * tokens — defined in `variables.css` for the dark wallpaper and
 * rebound by any light-context scope (folder window, My
 * WordPress, …) so all surfaces share one source of truth.
 */
.os-file-tile__label {
	font-size: 12px;
	line-height: 1.2;
	/* Follows the tile rather than restating its width, so a section
	 * that re-points `--os-tile-w` (image-led sections do) gets a
	 * label that grows with the tile instead of staying narrow. */
	max-width: calc( var( --os-tile-w, 88px ) - 4px );
	text-align: center;
	overflow: hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	color: var( --os-tile-label-color, var( --os-tile-fg, #fff ) );
	font-weight: var( --os-tile-label-weight, 400 );
	text-shadow: var( --os-tile-label-shadow, 0 1px 2px rgba( 0, 0, 0, 0.5 ) );
	-webkit-font-smoothing: var( --os-tile-label-smoothing, auto );
	-moz-osx-font-smoothing: grayscale;
}

/*
 * DragManager ghost element (the visual that follows the cursor
 * during a drag). Cloned from the source by `mountGhost()` and
 * pinned to the body with `position: fixed` + transform-based
 * movement. `pointer-events: none` ensures the ghost itself
 * never obscures the drop targets underneath during hit-testing.
 *
 * The accept / reject classes are toggled on each hover transition
 * so the cursor matches the drop semantics: `copy` over an
 * accepting target, `no-drop` over rejecting (or no) target.
 *
 * @since 0.18.0
 */
.os-drag-ghost {
	box-shadow: 0 6px 24px rgba( 0, 0, 0, 0.45 );
	border-radius: 6px;
	opacity: 0.95;
	transition: none;
}

.os-drag-ghost--accept {
	cursor: copy;
}

.os-drag-ghost--reject {
	cursor: no-drop;
}

/* Multi-item drag ghost: the grabbed tile, with the rest of the set
 * implied by two offset cards behind it and stated by a count badge.
 * The stack is drawn with pseudo-elements rather than real clones —
 * three cloned tiles cost three subtree copies per lift, and only
 * the top one is ever legible. */
.os-drag-stack {
	/* The drag manager overwrites this with `position: fixed` when it
	 * mounts the ghost. It stays declared so the stack still composes
	 * correctly if the helper is used outside a live drag — both
	 * values establish the containing block the cards and the badge
	 * are placed against. */
	position: relative;
}

.os-drag-stack::before,
.os-drag-stack::after {
	content: '';
	position: absolute;
	inset: 0;
	z-index: -1;
	border-radius: 6px;
	background: var( --os-ui-surface, rgba( 30, 30, 40, 0.9 ) );
	box-shadow: 0 4px 14px rgba( 0, 0, 0, 0.35 );
}

.os-drag-stack::before {
	transform: translate( 6px, 6px );
	opacity: 0.7;
}

.os-drag-stack::after {
	transform: translate( 12px, 12px );
	opacity: 0.45;
}

.os-drag-stack__count {
	position: absolute;
	inset-block-start: -8px;
	inset-inline-end: -8px;
	z-index: 1;
	min-width: 20px;
	height: 20px;
	padding: 0 6px;
	box-sizing: border-box;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 10px;
	background: var(
		--os-ui-accent,
		var( --wp-admin-theme-color, #2271b1 )
	);
	color: #fff;
	font-size: 11px;
	font-weight: 600;
	line-height: 1;
	box-shadow: 0 2px 8px rgba( 0, 0, 0, 0.4 );
}

/* ============================================================ *
 *  Upload progress HUD (since 0.31.0)
 *
 *  Pinned floating panel that surfaces the OS-file-drop manager's
 *  in-flight uploads. One row per file with a `<os-progress-bar>`,
 *  a filename + status, and a Cancel/Dismiss action. The panel
 *  hides itself when there are no rows; it's purely reactive to
 *  the four upload-lifecycle hooks.
 * ============================================================ */

.os-upload-hud {
	position: fixed;
	inset-block-end: 16px;
	inset-inline-end: 16px;
	width: 320px;
	max-width: calc( 100vw - 32px );
	background: var( --os-panel-bg, var( --os-ui-surface, #fff ) );
	color: var( --os-fg-on-light, var( --os-ui-fg, #1d2327 ) );
	border: 1px solid var( --os-ui-border, #dcdcde );
	border-radius: 10px;
	box-shadow: 0 8px 28px rgba( 0, 0, 0, 0.18 );
	z-index: 99998;
	font: inherit;
	pointer-events: auto;
	overflow: hidden;
}

.os-upload-hud[ hidden ] {
	display: none;
}

.os-upload-hud__header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	padding: 8px 12px;
	background: var( --os-panel-header-bg, var( --os-ui-hover, rgba( 0, 0, 0, 0.04 ) ) );
	border-block-end: 1px solid var( --os-ui-border, #dcdcde );
	font-weight: 600;
	font-size: 12px;
}

.os-upload-hud__title {
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.os-upload-hud__close {
	border: 0;
	background: transparent;
	color: inherit;
	font-size: 16px;
	line-height: 1;
	width: 22px;
	height: 22px;
	border-radius: 4px;
	cursor: pointer;
	display: inline-flex;
	align-items: center;
	justify-content: center;
}
.os-upload-hud__close:hover,
.os-upload-hud__close:focus-visible {
	background: var( --os-ui-hover, rgba( 0, 0, 0, 0.08 ) );
	outline: none;
}

.os-upload-hud__list {
	display: flex;
	flex-direction: column;
	gap: 10px;
	padding: 10px 12px;
	max-height: 50vh;
	overflow-y: auto;
}

.os-upload-hud__row {
	display: grid;
	grid-template-columns: 1fr auto;
	grid-template-areas:
		'meta actions'
		'bar bar';
	gap: 6px 8px;
	align-items: center;
	font-size: 12px;
}

.os-upload-hud__meta {
	grid-area: meta;
	min-width: 0;
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.os-upload-hud__name {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	font-weight: 500;
}

.os-upload-hud__status {
	font-size: 11px;
	opacity: 0.75;
	font-variant-numeric: tabular-nums;
}

.os-upload-hud__row os-progress-bar {
	grid-area: bar;
}

.os-upload-hud__actions {
	grid-area: actions;
	display: inline-flex;
	gap: 4px;
}