/**
 * Styles for the Tree & Sortable page (tree-and-sortable.html), under .ts-*.
 * This sheet covers the page around the demos: the kind filter, the card
 * grid, each card's head and code snippet, the small helpers inside the
 * demos and the shortcuts dialog. The components on show (.basalt-tree,
 * .basalt-sortable, .basalt-board, .basalt-transfer) are styled in
 * basalt.css. Colors are --basalt-* tokens, mixed where needed so small
 * text keeps 4.5:1 in every palette.
 */

/* The page wrapper defines two mixes: a quiet gray for small text, and a
   primary fill nudged toward the text color so on-primary text still
   clears 4.5:1 in the lighter palettes. */
.ts-page {
	--ts-quiet: color-mix(in srgb, var(--basalt-copy-muted) 72%, var(--basalt-copy));
	--ts-fill: color-mix(in srgb, var(--basalt-hue) 86%, var(--basalt-copy));

	&[data-ts-root] {
		margin-top: 2rem;
	}

	& kbd {
		display: inline-block;
		min-width: 1.5em;
		padding: 0.1em 0.4em;
		border-radius: 5px;
		border: 1px solid var(--basalt-edge-strong);
		border-bottom-width: 2px;
		font-size: 0.71rem;
		line-height: 1.4;
		text-align: center;
		color: var(--basalt-copy);
		background: var(--basalt-plane);
		box-shadow: none;
	}

	/* A disabled outline button stays readable rather than fading to 65%. */
	& .btn-outline-secondary {
		--bs-btn-disabled-opacity: 1;
		--bs-btn-disabled-color: var(--ts-quiet);
		--bs-btn-disabled-bg: transparent;
		--bs-btn-disabled-border-color: var(--basalt-edge);
	}
}

/* The kind filter sits above the grid: a row of chips, then the count. */
.ts-filter {
	display: flex;
	gap: 0.75rem;
	flex-direction: column;
	margin-bottom: 1.75rem;
}
.ts-chips {
	display: flex;
	gap: 0.5rem;
	flex-wrap: wrap;
}
.ts-chip {
	padding: 0.4rem 0.9rem;
	border: 1px solid var(--basalt-edge-strong);
	border-radius: 999px;
	font-size: 0.8rem;
	font-weight: 600;
	line-height: 1.2;
	color: var(--basalt-copy-body);
	background: var(--basalt-plane);
	cursor: pointer;
	transition:
		background-color 170ms ease,
		color 170ms ease,
		border-color 170ms ease;

	&:hover {
		color: var(--basalt-copy);
		background: var(--basalt-wash);
	}
	&:focus-visible {
		outline: 2px solid var(--basalt-hue);
		outline-offset: 2px;
	}
}
.ts-chips .ts-chip[aria-pressed="true"] {
	border-color: var(--basalt-copy);
	color: var(--basalt-plane);
	background: var(--basalt-copy);
}
.ts-filter-count {
	margin: 0;
	font-size: 0.8rem;
	color: var(--ts-quiet);
}

/* Cards fill a twelve-track grid. Every card spans the row below 1200px;
   from there they pair up, unless marked full or left alone by the
   filter. */
.ts-grid {
	display: grid;
	gap: 1.5rem;
	grid-template-columns: repeat(12, minmax(0, 1fr));
}
.ts-card {
	grid-column: span 12;
	min-width: 0;

	&.is-hidden {
		display: none;
	}

	@media (min-width: 1200px) {
		grid-column: span 6;
	}
	&.basalt-box .card-body {
		display: flex;
		flex-direction: column;
		height: 100%;
		padding: 1.75rem;

		@media (max-width: 575.98px) {
			padding: 1.25rem;
		}
	}
}
@media (min-width: 1200px) {
	.ts-card-full,
	.ts-card.is-alone {
		grid-column: span 12;
	}
}

/* The kind pill shows above the title, though the markup puts it after
   so the title is read first. */
.ts-card-head {
	display: flex;
	gap: 0.7rem;
	flex-direction: column-reverse;
	align-items: flex-start;
	margin-bottom: 1.5rem;
}
.ts-card-title {
	margin: 0 0 0.3rem;
	font-size: var(--basalt-fs-card-title, 1.2rem);
	font-weight: 700;
	color: var(--basalt-copy);
}
.ts-card-desc {
	max-width: 72ch;
	margin: 0;
	font-size: 0.875rem;
	line-height: 1.6;
	color: var(--ts-quiet);
}
.ts-card-kind {
	flex-shrink: 0;
	padding: 0.2rem 0.6rem;
	border: 1px solid var(--basalt-edge-strong);
	border-radius: 999px;
	font-size: 0.7rem;
	font-weight: 600;
	letter-spacing: 0.035em;
	white-space: nowrap;
	color: var(--ts-quiet);
}

/* List group tree: Bootstrap's list group and collapse, retinted. The
   group owns the outer edge so nested rows line up with it. */
.ts-lgtree {
	--bs-list-group-color: var(--basalt-copy-body);
	--bs-list-group-bg: var(--basalt-plane);
	--bs-list-group-border-color: var(--basalt-edge);
	--bs-list-group-border-radius: 12px;
	--bs-list-group-item-padding-x: 1rem;
	--bs-list-group-item-padding-y: 0.7rem;
	--bs-list-group-action-color: var(--basalt-copy-body);
	--bs-list-group-action-hover-color: var(--basalt-copy);
	--bs-list-group-action-hover-bg: var(--basalt-wash);
	--bs-list-group-action-active-color: var(--basalt-copy);
	--bs-list-group-action-active-bg: var(--basalt-wash);
	--bs-list-group-active-color: var(--basalt-on-hue);
	--bs-list-group-active-bg: var(--ts-fill);
	--bs-list-group-active-border-color: var(--ts-fill);
	border: 1px solid var(--basalt-edge);
	border-radius: 12px;
	overflow: hidden;
	font-size: 0.875rem;

	& .list-group-item.active {
		border-color: var(--ts-fill);
		color: var(--basalt-on-hue);
		background-color: var(--ts-fill);
	}
	& .list-group-item {
		border-left: 0;
		border-right: 0;
		border-radius: 0;
	}
	& > .list-group-item {
		border-top-width: 1px;
		border-bottom: 0;
	}
	& > .list-group-item:first-child {
		border-top: 0;
	}
	& .list-group-item:focus-visible {
		box-shadow: inset 0 0 0 2px var(--basalt-hue);
	}
}
.ts-lgtree-folder {
	display: flex;
	gap: 0.6rem;
	align-items: center;
	font-weight: 600;
	color: var(--basalt-copy);
}
.ts-lgtree-chev {
	font-size: 0.7rem;
	color: var(--ts-quiet);
	transition: transform 170ms ease;
}
.ts-lgtree-folder[aria-expanded="true"] .ts-lgtree-chev {
	transform: rotate(90deg);
}
.ts-lgtree-count {
	margin-left: auto;
	padding: 0.05rem 0.5rem;
	border-radius: 999px;
	border: 1px solid var(--basalt-edge);
	font-size: 0.71rem;
	font-weight: 600;
	color: var(--basalt-copy-body);
	background: var(--basalt-canvas);
}
.ts-lgtree-group {
	--bs-list-group-bg: var(--basalt-canvas);
	border-top: 1px solid var(--basalt-edge);

	& .list-group-item {
		padding-left: 3rem;
	}
}

/* Demos that pair a control row with a tree stack them with room between. */
.ts-stack {
	display: flex;
	gap: 1.25rem;
	flex-direction: column;
}

/* The tally above the checkbox tree: a big count, its label and two
   buttons pushed to the end. */
.ts-tally {
	display: flex;
	row-gap: 0.5rem;
	column-gap: 0.6rem;
	flex-wrap: wrap;
	align-items: baseline;
}
.ts-tally-num {
	margin: 0;
	font-size: 1.6rem;
	font-weight: 750;
	letter-spacing: -0.02em;
	font-variant-numeric: tabular-nums;
	color: var(--basalt-copy);
}
.ts-tally-label {
	margin: 0;
	font-size: 0.85rem;
	color: var(--ts-quiet);
}
.ts-tally-actions {
	display: flex;
	gap: 0.5rem;
	margin-left: auto;
}

/* The search above the searchable tree, with its count, a few words to
   try, and an empty state when nothing matches. */
.ts-search .form-label {
	font-size: 0.8rem;
	font-weight: 600;
	color: var(--basalt-copy);
}
.ts-search-field {
	position: relative;

	& .bi {
		position: absolute;
		top: 50%;
		left: 0.85rem;
		transform: translateY(-50%);
		color: var(--ts-quiet);
		pointer-events: none;
	}
	& .form-control {
		padding-left: 2.35rem;
	}
}
.ts-search-meta {
	display: flex;
	gap: 0.5rem;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	margin-top: 0.6rem;
}
.ts-search-count {
	margin: 0;
	font-size: 0.8rem;
	color: var(--ts-quiet);
}
.ts-try {
	display: flex;
	gap: 0.3rem;
	flex-wrap: wrap;
	align-items: center;
}
.ts-try-label {
	margin-right: 0.1rem;
	font-size: 0.75rem;
	color: var(--ts-quiet);
}
.ts-try-btn {
	padding: 0.1rem 0.5rem;
	border: 1px dashed var(--basalt-edge-strong);
	border-radius: 999px;
	font-size: 0.75rem;
	color: var(--basalt-copy-body);
	background: transparent;
	cursor: pointer;

	&:hover {
		color: var(--basalt-copy);
		background: var(--basalt-wash);
	}
	&:focus-visible {
		outline: 2px solid var(--basalt-hue);
		outline-offset: 2px;
	}
}
.ts-empty {
	display: flex;
	gap: 0.6rem;
	flex-direction: column;
	align-items: center;
	padding: 1.75rem 1rem;
	text-align: center;

	& > .bi {
		display: inline-grid;
		place-items: center;
		width: 2.75rem;
		height: 2.75rem;
		border-radius: 50%;
		font-size: 1.1rem;
		color: var(--basalt-hue);
		background: var(--basalt-hue-soft);
	}
}
.ts-empty-text {
	margin: 0;
	font-size: 0.875rem;
	color: var(--basalt-copy-body);
}

/* The drag-and-drop card splits into the tree and a side column of
   move buttons, status and key hints; the columns sit side by side from
   992px. */
.ts-split {
	display: grid;
	gap: 1.5rem;
	grid-template-columns: minmax(0, 1fr);
	align-items: start;

	@media (min-width: 992px) {
		gap: 2rem;
		grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
	}
}
.ts-side {
	display: flex;
	gap: 1rem;
	flex-direction: column;
	min-width: 0;
}
.ts-side-label,
.ts-keymap-title {
	margin: 0;
	font-size: 0.71rem;
	font-weight: 700;
	letter-spacing: 0.055em;
	text-transform: uppercase;
	color: var(--ts-quiet);
}
.ts-keymap-title {
	margin: 0 0 0.5rem;
}

/* Key hints read as two columns: the keys, then what they do. The table
   form in the dialog adds rules between rows. */
.ts-keys {
	display: grid;
	gap: 0.5rem;
	margin: 0;

	& > div {
		display: flex;
		gap: 0.75rem;
		align-items: baseline;
		font-size: 0.8rem;
	}
	& dt {
		flex: 0 0 8.5rem;
		font-weight: 400;
		white-space: nowrap;
		color: var(--basalt-copy-body);
	}
	& dd {
		margin: 0;
		color: var(--ts-quiet);
	}
}
.ts-keys-table {
	& > div {
		padding: 0.4rem 0;
		border-bottom: 1px solid var(--basalt-edge);
	}
	& > div:last-child {
		border-bottom: 0;
	}
	& dt {
		flex-basis: 7.5rem;
	}
}

/* The selected path above the file tree wraps under its label when the
   name runs long. */
.ts-path {
	display: flex;
	gap: 0.5rem 0.75rem;
	flex-wrap: wrap;
	align-items: center;
	font-size: 0.85rem;
}
.ts-path-label {
	font-size: 0.71rem;
	font-weight: 700;
	letter-spacing: 0.055em;
	text-transform: uppercase;
	color: var(--ts-quiet);
}
.ts-path-value {
	flex: 1 1 12rem;
	min-width: 0;
	font-weight: 600;
	overflow-wrap: anywhere;
	color: var(--basalt-copy);
}

/* A trend pill under each sortable grid tile, green when good and red
   when not. */
.ts-trend {
	display: inline-flex;
	gap: 0.25rem;
	align-items: center;
	padding: 0.1rem 0.4rem;
	border-radius: 999px;
	font-size: 0.75rem;
	font-weight: 600;
}
.ts-trend-good {
	color: color-mix(in srgb, var(--basalt-success) 45%, var(--basalt-copy));
	background: var(--basalt-success-soft);
}
.ts-trend-bad {
	color: color-mix(in srgb, var(--basalt-danger) 50%, var(--basalt-copy));
	background: var(--basalt-danger-soft);
}

/* Each card ends with a folded code snippet pinned to the bottom, with
   room above it whatever the demo ends with. */
.ts-card .card-body > :nth-last-child(2) {
	margin-bottom: 1.75rem;
}
.ts-code {
	margin-top: auto;
	padding-top: 0.85rem;
	border-top: 1px solid var(--basalt-edge);

	& summary {
		display: inline-flex;
		gap: 0.4rem;
		align-items: center;
		border-radius: 6px;
		font-size: 0.8rem;
		font-weight: 600;
		color: var(--basalt-copy-body);
		list-style: none;
		cursor: pointer;

		&::-webkit-details-marker {
			display: none;
		}
		&:hover {
			color: var(--basalt-copy);
		}
		&:focus-visible {
			outline: 2px solid var(--basalt-hue);
			outline-offset: 3px;
		}
		& .bi {
			font-size: 0.7rem;
			transition: transform 170ms ease;
		}
	}
	&[open] summary .bi {
		transform: rotate(90deg);
	}

	& pre {
		margin: 0;
		padding: 2.9rem 1rem 0.9rem;
		border-radius: 10px;
		border: 1px solid var(--basalt-edge);
		overflow-x: auto;
		overflow-y: hidden;
		font-family: "Chivo Mono", monospace;
		font-size: 0.76rem;
		line-height: 1.6;
		color: var(--basalt-copy);
		background: var(--basalt-canvas);
	}
}
.ts-code-body {
	position: relative;
	margin-top: 0.75rem;
}
.ts-code-copy {
	position: absolute;
	top: 0.5rem;
	right: 0.5rem;
}

/* The shortcuts dialog lists keys in two columns from 768px. It reuses
   the page wrapper class, so the quiet mix applies inside it too. */
.ts-keymap {
	display: grid;
	gap: 1.5rem;
	grid-template-columns: minmax(0, 1fr);

	@media (min-width: 768px) {
		gap: 2rem;
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}
.modal-content.ts-page {
	color: var(--basalt-copy);

	& .basalt-dialog-head-sub {
		color: var(--ts-quiet);
	}
}

/* Reduced motion drops the transitions; print shows every card and
   leaves out the filter and the snippets. */
@media (prefers-reduced-motion: reduce) {
	.ts-chip,
	.ts-code summary .bi,
	.ts-lgtree-chev {
		transition: none;
	}
}
@media print {
	.ts-filter,
	.ts-code {
		display: none;
	}
	.ts-card.is-hidden {
		display: block;
	}
}