/*
 * WPF Blog Topics — structural styles of the hub filter. A theme maps its brand by setting the
 * --wbt-* custom properties on .wbt-nav, not by overriding these selectors. The defaults sit in
 * :where(), so any theme rule on .wbt-nav wins whatever the load order. Component rules carry
 * .wbt-nav in front, so a theme's bare `button` / `[type="button"]` reset does not beat them.
 */
:where(.wbt-nav) {
	--wbt-font: inherit;
	--wbt-font-size: 1rem;
	--wbt-font-weight: 500;
	--wbt-line-height: 1.2;
	--wbt-letter-spacing: normal;
	--wbt-color: inherit;
	--wbt-bg: #fff;
	--wbt-border: 1px solid rgba(0, 0, 0, .3);
	--wbt-radius: 4px;
	--wbt-padding: .75em 1em;
	--wbt-gap: .75rem;
	--wbt-min-width: 12rem;
	--wbt-list-bg: var(--wbt-bg);
	--wbt-list-border: var(--wbt-border);
	--wbt-list-radius: var(--wbt-radius);
	--wbt-list-shadow: 0 8px 24px rgba(0, 0, 0, .08);
	--wbt-list-max-height: min(60vh, 24rem);
	--wbt-option-padding: .5em 1em;
	--wbt-option-color: inherit;
	--wbt-option-hover-bg: rgba(0, 0, 0, .06);
	--wbt-option-hover-color: inherit;
	--wbt-option-active-color: inherit;
	--wbt-option-active-weight: 600;
	--wbt-z: 20;
	--wbt-motion: .3s;
	--wbt-ease: cubic-bezier(.22, 1, .36, 1);
	--wbt-chip-gap: .5rem;
	--wbt-chip-padding: .5em 1em;
	--wbt-chip-font-size: inherit;
	--wbt-chip-font-weight: inherit;
	--wbt-chip-color: inherit;
	--wbt-chip-bg: transparent;
	--wbt-chip-border: var(--wbt-border);
	--wbt-chip-radius: 999px;
	--wbt-chip-hover-color: var(--wbt-chip-active-color);
	--wbt-chip-active-color: #fff;
	--wbt-chip-active-bg: #1e1e1e;
	--wbt-chip-active-border: var(--wbt-chip-border);
	--wbt-count-color: inherit;
	--wbt-count-opacity: .55;
	--wbt-label-color: inherit;
	--wbt-label-opacity: .6;
	--wbt-status-font-size: .875em;
	--wbt-status-color: inherit;
	--wbt-reset-color: inherit;
	--wbt-focus: 2px solid currentColor;
	--wbt-scroll-offset: 0px;
}

.wbt-nav {
	display: flex;
	flex-direction: column;
	align-items: stretch;
	gap: var(--wbt-gap);
	scroll-margin-top: var(--wbt-scroll-offset);
	font-family: var(--wbt-font);
	font-size: var(--wbt-font-size);
	font-weight: var(--wbt-font-weight);
	line-height: var(--wbt-line-height);
	letter-spacing: var(--wbt-letter-spacing);
	color: var(--wbt-color);
}

.wbt-nav [hidden] {
	display: none !important;
}

.wbt-nav .wbt-nav__chips {
	display: flex;
	flex-wrap: wrap;
	gap: var(--wbt-chip-gap);
}

.wbt-nav .wbt-nav__chip {
	display: inline-flex;
	align-items: baseline;
	gap: .35em;
	margin: 0;
	padding: var(--wbt-chip-padding);
	font: inherit;
	font-size: var(--wbt-chip-font-size);
	font-weight: var(--wbt-chip-font-weight);
	letter-spacing: inherit;
	color: var(--wbt-chip-color);
	white-space: nowrap;
	background: var(--wbt-chip-bg);
	border: var(--wbt-chip-border);
	border-radius: var(--wbt-chip-radius);
	cursor: pointer;
	transition: color var(--wbt-motion) ease, background-color var(--wbt-motion) ease, border-color var(--wbt-motion) ease;
}

@media (hover: hover) {
	.wbt-nav .wbt-nav__chip:hover {
		color: var(--wbt-chip-hover-color);
	}
}

.wbt-nav .wbt-nav__chip.is-active {
	color: var(--wbt-chip-active-color);
	background: var(--wbt-chip-active-bg);
	border: var(--wbt-chip-active-border);
}

.wbt-nav .wbt-nav__count {
	font-size: .8em;
	font-weight: 500;
	color: var(--wbt-count-color);
	opacity: var(--wbt-count-opacity);
}

.wbt-nav .wbt-nav__selects {
	display: flex;
	flex-wrap: wrap;
	gap: var(--wbt-gap);
}

.wbt-nav .wbt-nav__label {
	color: var(--wbt-label-color);
	opacity: var(--wbt-label-opacity);
	white-space: nowrap;
}

.wbt-nav .wbt-nav__value {
	margin-right: auto;
}

.wbt-nav .wbt-nav__status {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: .25em 1em;
	margin: 0;
	font-size: var(--wbt-status-font-size);
	color: var(--wbt-status-color);
}

.wbt-nav .wbt-nav__reset {
	margin: 0;
	padding: 0;
	font: inherit;
	letter-spacing: inherit;
	color: var(--wbt-reset-color);
	text-decoration: underline;
	text-underline-offset: .2em;
	background: none;
	border: 0;
	cursor: pointer;
}

.wbt-nav .wbt-nav__chip:focus-visible,
.wbt-nav .wbt-nav__trigger:focus-visible,
.wbt-nav .wbt-nav__reset:focus-visible {
	outline: var(--wbt-focus);
	outline-offset: 2px;
}

.wbt-nav__item {
	position: relative;
	min-width: var(--wbt-min-width);
}

.wbt-nav .wbt-nav__trigger {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: .75em;
	width: 100%;
	margin: 0;
	padding: var(--wbt-padding);
	font: inherit;
	letter-spacing: inherit;
	color: inherit;
	text-align: left;
	background: var(--wbt-bg);
	border: var(--wbt-border);
	border-radius: var(--wbt-radius);
	cursor: pointer;
}

.wbt-nav .wbt-nav__trigger::after {
	content: "";
	flex: none;
	width: .45em;
	height: .45em;
	border-right: 2px solid currentColor;
	border-bottom: 2px solid currentColor;
	transform: translateY(-25%) rotate(45deg);
	transition: transform .2s ease;
}

.wbt-nav .wbt-nav__item--open .wbt-nav__trigger::after {
	transform: translateY(25%) rotate(-135deg);
}

.wbt-nav .wbt-nav__list {
	position: absolute;
	z-index: var(--wbt-z);
	top: calc(100% + 4px);
	left: 0;
	display: block;
	visibility: hidden;
	min-width: 100%;
	max-height: var(--wbt-list-max-height);
	margin: 0;
	padding: .25rem 0;
	overflow-y: auto;
	list-style: none;
	background: var(--wbt-list-bg);
	border: var(--wbt-list-border);
	border-radius: var(--wbt-list-radius);
	box-shadow: var(--wbt-list-shadow);
	opacity: 0;
	transform: translateY(-6px);
	/* Unfolds from the trigger down; the negative open inset leaves room for the shadow. */
	clip-path: inset(0 0 100% 0 round var(--wbt-list-radius));
	pointer-events: none;
	transition:
		clip-path var(--wbt-motion) var(--wbt-ease),
		opacity var(--wbt-motion) var(--wbt-ease),
		transform var(--wbt-motion) var(--wbt-ease),
		visibility 0s linear var(--wbt-motion);
}

.wbt-nav .wbt-nav__item--open .wbt-nav__list {
	visibility: visible;
	opacity: 1;
	transform: none;
	clip-path: inset(-8px -48px -48px -48px round var(--wbt-list-radius));
	pointer-events: auto;
	transition-delay: 0s;
}

.wbt-nav .wbt-nav__entry {
	opacity: 0;
	transform: translateY(-4px);
	transition: opacity .2s ease, transform .2s ease;
}

.wbt-nav .wbt-nav__item--open .wbt-nav__entry {
	opacity: 1;
	transform: none;
	transition-delay: calc(var(--wbt-motion) / 3);
}

.wbt-nav .wbt-nav__entry {
	margin: 0;
	padding: 0;
}

.wbt-nav .wbt-nav__option {
	display: block;
	width: 100%;
	margin: 0;
	padding: var(--wbt-option-padding);
	font: inherit;
	letter-spacing: inherit;
	color: var(--wbt-option-color);
	text-align: left;
	white-space: nowrap;
	background: none;
	border: 0;
	cursor: pointer;
}

.wbt-nav .wbt-nav__option.is-active {
	font-weight: var(--wbt-option-active-weight);
	color: var(--wbt-option-active-color);
}

.wbt-nav .wbt-nav__option:hover,
.wbt-nav .wbt-nav__option:focus-visible {
	color: var(--wbt-option-hover-color);
	background: var(--wbt-option-hover-bg);
}

[data-wbt-topic][hidden] {
	display: none !important;
}

.wbt-list {
	transition: opacity .4s ease;
}

.wbt-list.is-hidden {
	opacity: 0;
}

@media (max-width: 767px) {
	/* One swipeable row of chips instead of several wrapped lines. */
	.wbt-nav .wbt-nav__chips {
		flex-wrap: nowrap;
		margin-inline: calc(var(--wbt-chip-bleed, 0px) * -1);
		padding-inline: var(--wbt-chip-bleed, 0px);
		padding-block: 2px;
		overflow-x: auto;
		scroll-snap-type: x proximity;
		/* Snap to the padding, not the row's edge, or the first chip is pushed against the screen. */
		scroll-padding-inline: var(--wbt-chip-bleed, 0px);
		scrollbar-width: none;
	}

	.wbt-nav .wbt-nav__chips::-webkit-scrollbar {
		display: none;
	}

	.wbt-nav .wbt-nav__chip {
		scroll-snap-align: start;
	}
}

@media (max-width: 479px) {
	.wbt-nav__item {
		flex: 1 1 100%;
		min-width: 0;
	}

	.wbt-nav .wbt-nav__option {
		white-space: normal;
	}
}

@media (prefers-reduced-motion: reduce) {
	.wbt-list,
	.wbt-nav .wbt-nav__trigger::after,
	.wbt-nav .wbt-nav__list,
	.wbt-nav .wbt-nav__entry,
	.wbt-nav .wbt-nav__chip {
		transition: none;
	}
}