/**
 * Little River Trailer Inventory — filter sidebar, chips, and layout (Sprint 4.3).
 *
 * Loads on the archive and on pages with inventory shortcodes. Inherits brand
 * variables from inventory.css (shared .lrti-archive / .lrti-single scope).
 * All selectors are plugin-prefixed; no global theme form/button styling.
 */

.lrti-inventory-layout {
	display: grid;
	grid-template-columns: 280px 1fr;
	gap: 32px;
	align-items: start;
	padding-bottom: 56px;
}

.lrti-inventory-layout--nofilters {
	grid-template-columns: 1fr;
}

.lrti-inventory-main {
	min-width: 0;
}

/* ---- Grid column counts ------------------------------------------------- */

.lrti-grid--cols-1 {
	grid-template-columns: 1fr;
}

.lrti-grid--cols-2 {
	grid-template-columns: repeat( 2, minmax( 0, 1fr ) );
}

.lrti-grid--cols-3 {
	grid-template-columns: repeat( 3, minmax( 0, 1fr ) );
}

.lrti-grid--cols-4 {
	grid-template-columns: repeat( 4, minmax( 0, 1fr ) );
}

/* ---- Sidebar ------------------------------------------------------------ */

.lrti-inventory .lrti-sidebar {
	position: sticky;
	top: 20px;
}

.lrti-filter-form {
	background: var( --lrti-white );
	border: 1px solid var( --lrti-border );
	border-radius: var( --lrti-radius );
	padding: 18px;
	box-shadow: var( --lrti-shadow );
	display: flex;
	flex-direction: column;
	gap: 14px;
}

.lrti-filter-group {
	display: flex;
	flex-direction: column;
	gap: 6px;
	margin: 0;
	padding: 0;
	border: 0;
}

.lrti-filter-label {
	font-size: 0.8rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.02em;
	color: var( --lrti-navy );
	padding: 0;
}

.lrti-input,
.lrti-select {
	width: 100%;
	padding: 9px 10px;
	border: 1px solid var( --lrti-border );
	border-radius: 8px;
	background: var( --lrti-white );
	font-size: 0.92rem;
	color: var( --lrti-dark );
}

.lrti-filter-range {
	display: flex;
	flex-direction: row;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px;
}

.lrti-filter-range .lrti-filter-label {
	flex: 0 0 100%;
}

.lrti-input--sm {
	flex: 1 1 0;
	min-width: 0;
}

.lrti-range-sep {
	color: var( --lrti-muted );
}

.lrti-filter-checks {
	gap: 10px;
}

.lrti-check {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 0.92rem;
	font-weight: 500;
	text-transform: none;
	letter-spacing: 0;
	color: var( --lrti-dark );
	cursor: pointer;
}

.lrti-filter-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: 4px;
}

.lrti-filter-actions .lrti-btn {
	flex: 1 1 auto;
}

/* Mobile filter toggle (hidden on large screens) */
.lrti-filter-toggle {
	display: none;
	width: 100%;
	margin-bottom: 12px;
}

/* ---- Results header ----------------------------------------------------- */

.lrti-results-header {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	margin-bottom: 14px;
}

.lrti-results-count {
	margin: 0;
	font-weight: 700;
}

.lrti-sort {
	display: flex;
	align-items: center;
	gap: 8px;
}

.lrti-sort-label {
	font-size: 0.85rem;
	color: var( --lrti-muted );
}

.lrti-sort-select {
	padding: 8px 10px;
	border: 1px solid var( --lrti-border );
	border-radius: 8px;
	background: var( --lrti-white );
	font-size: 0.88rem;
	max-width: 220px;
}

/* ---- Active filter chips ------------------------------------------------ */

.lrti-chips {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px;
	margin-bottom: 18px;
}

.lrti-chip {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	background: var( --lrti-light );
	border: 1px solid var( --lrti-border );
	border-radius: 999px;
	padding: 5px 6px 5px 12px;
	font-size: 0.85rem;
	font-weight: 600;
}

.lrti-chip-remove {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 20px;
	height: 20px;
	border: 0;
	border-radius: 50%;
	background: var( --lrti-navy );
	color: #fff;
	font-size: 15px;
	line-height: 1;
	cursor: pointer;
	padding: 0;
}

.lrti-chip-remove:hover,
.lrti-chip-remove:focus {
	background: var( --lrti-primary );
}

.lrti-chip-clear {
	background: none;
	border: 0;
	color: var( --lrti-primary );
	font-weight: 700;
	font-size: 0.85rem;
	cursor: pointer;
	text-decoration: underline;
	padding: 4px 6px;
}

/* ---- Loading state ------------------------------------------------------ */

.lrti-results {
	position: relative;
	min-height: 120px;
}

.lrti-results.is-loading {
	opacity: 0.55;
	pointer-events: none;
}

.lrti-results.is-loading::after {
	content: "";
	position: absolute;
	top: 40px;
	left: 50%;
	width: 34px;
	height: 34px;
	margin-left: -17px;
	border: 3px solid var( --lrti-border );
	border-top-color: var( --lrti-primary );
	border-radius: 50%;
	animation: lrti-spin 0.8s linear infinite;
}

@keyframes lrti-spin {
	to {
		transform: rotate( 360deg );
	}
}

@media ( prefers-reduced-motion: reduce ) {
	.lrti-results.is-loading::after {
		animation: none;
	}
}

/* ---- Standalone [trailer_filters] --------------------------------------- */

.lrti-filters-standalone {
	margin-bottom: 24px;
}

.lrti-search-shortcode {
	display: flex;
	gap: 8px;
	max-width: 520px;
}

.lrti-search-shortcode .lrti-input {
	flex: 1 1 auto;
}

/* ---- Responsive --------------------------------------------------------- */

@media ( max-width: 1024px ) {
	.lrti-inventory-layout {
		grid-template-columns: 240px 1fr;
		gap: 24px;
	}
}

@media ( max-width: 782px ) {
	.lrti-inventory-layout {
		grid-template-columns: 1fr;
	}

	.lrti-inventory .lrti-sidebar {
		position: static;
	}

	.lrti-filter-toggle {
		display: block;
	}

	/* Collapsed by default on mobile; JS toggles .is-open */
	.lrti-filter-form {
		display: none;
	}

	.lrti-filter-form.is-open {
		display: flex;
	}

	.lrti-grid--cols-3,
	.lrti-grid--cols-4 {
		grid-template-columns: repeat( 2, minmax( 0, 1fr ) );
	}
}

@media ( max-width: 560px ) {
	.lrti-grid--cols-2,
	.lrti-grid--cols-3,
	.lrti-grid--cols-4 {
		grid-template-columns: 1fr;
	}

	.lrti-results-header {
		flex-direction: column;
		align-items: flex-start;
	}
}

/* ---- Sprint 4.4: grouped filter sections -------------------------------- */

.lrti-filter-section {
	border: 0;
	border-top: 1px solid var( --lrti-border );
	margin: 0;
	padding: 14px 0 0;
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.lrti-filter-section:first-of-type {
	border-top: 0;
	padding-top: 0;
}

.lrti-filter-legend {
	font-size: 0.72rem;
	font-weight: 800;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var( --lrti-primary );
	padding: 0;
	margin: 0;
}

/* On mobile, allow tapping a legend to collapse its group. */
@media ( max-width: 782px ) {
	.lrti-filter-section .lrti-filter-legend {
		cursor: pointer;
		width: 100%;
		position: relative;
		padding-right: 20px;
	}

	.lrti-filter-section .lrti-filter-legend::after {
		content: "−";
		position: absolute;
		right: 0;
		top: 0;
	}

	.lrti-filter-section.is-collapsed .lrti-filter-legend::after {
		content: "+";
	}

	.lrti-filter-section.is-collapsed > *:not( .lrti-filter-legend ) {
		display: none;
	}
}