/* ==========================================================================
   Explore Menu – Front-end Styles
   ========================================================================== */

:root {
	--exm-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
	--exm-accent: #2563eb;
	--exm-accent-light: #dbeafe;
	--exm-text: #1e293b;
	--exm-text-muted: #64748b;
	--exm-bg: #f8fafc;
	--exm-bg-white: #ffffff;
	--exm-border: #e2e8f0;
	--exm-current-bg: #eff6ff;
	--exm-current-border: #2563eb;
	--exm-radius: 8px;
	--exm-sticky-height: 44px;
	--exm-sticky-offset: 0px;
	--exm-progress-color: #2563eb;
	--exm-progress-bg: #e2e8f0;
	--exm-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
	--exm-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
	--exm-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
}

/* ==========================================================================
   Contextual Menu (inline, before content)
   ========================================================================== */

.exm-contextual {
	font-family: var(--exm-font);
	background: var(--exm-bg);
	border: 1px solid var(--exm-border);
	border-radius: var(--exm-radius);
	padding: 16px 20px;
	margin-top: 28px;
	margin-bottom: 28px;
	line-height: 1.5;
}

.exm-contextual__header {
	display: flex;
	align-items: center;
	gap: 8px;
	margin-bottom: 12px;
	padding-bottom: 10px;
	border-bottom: 1px solid var(--exm-border);
}

.exm-contextual__label {
	font-size: 11px;
	font-weight: 600;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--exm-text-muted);
}

/* ==========================================================================
   Tree (shared between inline and sticky panel)
   ========================================================================== */

.exm-tree {
	list-style: none;
	margin: 0;
	padding: 0;
}

.exm-tree .exm-tree {
	padding-left: 20px;
	overflow: hidden;
	transition: max-height var(--exm-transition), opacity var(--exm-transition);
}

/* Collapsed children: not in active line */
li:not(.exm-active-line) > .exm-tree {
	max-height: 0;
	opacity: 0;
	pointer-events: none;
}

/* Expanded children: in active line */
li.exm-active-line > .exm-tree {
	max-height: 2000px;
	opacity: 1;
	pointer-events: auto;
}

/* JS-toggled expand */
li.exm-expanded > .exm-tree {
	max-height: 2000px !important;
	opacity: 1 !important;
	pointer-events: auto !important;
}

/* JS-toggled collapse (overrides active-line when user manually collapses) */
li.exm-collapsed > .exm-tree {
	max-height: 0 !important;
	opacity: 0 !important;
	pointer-events: none !important;
}

.exm-node {
	display: flex;
	align-items: center;
	gap: 4px;
	min-height: 32px;
}

/* Toggle button */
.exm-toggle {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 24px;
	height: 24px;
	padding: 0;
	border: none;
	background: transparent;
	color: var(--exm-text-muted);
	cursor: pointer;
	border-radius: 4px;
	flex-shrink: 0;
	transition: background var(--exm-transition), color var(--exm-transition);
}

.exm-toggle:hover {
	background: var(--exm-border);
	color: var(--exm-text);
}

.exm-chevron {
	transition: transform var(--exm-transition);
}

/* Rotate chevron when expanded */
li.exm-active-line > .exm-node > .exm-toggle .exm-chevron,
li.exm-expanded > .exm-node > .exm-toggle .exm-chevron {
	transform: rotate(90deg);
}

li.exm-collapsed > .exm-node > .exm-toggle .exm-chevron {
	transform: rotate(0deg) !important;
}

/* Links */
.exm-link {
	font-size: 14px;
	color: var(--exm-text);
	text-decoration: none;
	padding: 4px 8px;
	border-radius: 4px;
	transition: background var(--exm-transition), color var(--exm-transition);
	line-height: 1.4;
}

a.exm-link:hover {
	background: var(--exm-accent-light);
	color: var(--exm-accent);
}

/* Current page */
.exm-current > .exm-node > .exm-link {
	font-weight: 600;
	color: var(--exm-accent);
	background: var(--exm-current-bg);
	border-left: 2px solid var(--exm-current-border);
	padding-left: 6px;
}

/* Active line ancestor */
.exm-active-line > .exm-node > a.exm-link {
	font-weight: 500;
}

/* Root-level nodes (depth-0) */
.exm-depth-0 > li > .exm-node > .exm-link {
	font-size: 15px;
	font-weight: 600;
}

/* Items without toggle – add indent spacer */
li:not(.exm-has-children) > .exm-node {
	padding-left: 28px;
}

/* ==========================================================================
   Sticky Bar
   ========================================================================== */

.exm-sticky {
	position: fixed;
	top: var(--exm-sticky-offset);
	left: 0;
	right: 0;
	z-index: 99990;
	opacity: 0;
	transform: translateY(-8px);
	pointer-events: none;
	transition: opacity 0.25s ease, transform 0.25s ease;
	font-family: var(--exm-font);
}

.exm-sticky.exm-sticky--visible {
	opacity: 1;
	transform: translateY(0);
	pointer-events: auto;
}

/* Progress bar */
.exm-sticky__progress {
	position: absolute;
	bottom: 0;
	left: 0;
	height: 3px;
	width: 0%;
	background: var(--exm-progress-color);
	transition: width 0.1s linear;
	z-index: 2;
}

/* Main bar */
.exm-sticky__bar {
	position: relative;
	height: var(--exm-sticky-height);
	background: var(--exm-bg-white);
	border-bottom: 1px solid var(--exm-border);
	box-shadow: var(--exm-shadow);
	z-index: 1;
}

.exm-sticky__trigger {
	display: flex;
	align-items: center;
	gap: 10px;
	width: 100%;
	height: 100%;
	padding: 0 16px;
	border: none;
	background: transparent;
	cursor: pointer;
	font-family: var(--exm-font);
	color: var(--exm-text);
	text-align: left;
	transition: background var(--exm-transition);
}

.exm-sticky__trigger:hover {
	background: var(--exm-bg);
}

.exm-sticky__icon {
	flex-shrink: 0;
	color: var(--exm-accent);
}

.exm-sticky__label {
	flex: 1;
	min-width: 0;
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 14px;
	overflow: hidden;
}

.exm-sticky__hub-title {
	font-weight: 600;
	white-space: nowrap;
}

.exm-sticky__sep {
	color: var(--exm-text-muted);
	flex-shrink: 0;
}

.exm-sticky__current {
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	color: var(--exm-text-muted);
}

.exm-sticky__caret {
	flex-shrink: 0;
	color: var(--exm-text-muted);
	transition: transform var(--exm-transition);
}

.exm-sticky.exm-sticky--open .exm-sticky__caret {
	transform: rotate(180deg);
}

/* Dropdown panel */
.exm-sticky__panel {
	background: var(--exm-bg-white);
	border-bottom: 1px solid var(--exm-border);
	box-shadow: var(--exm-shadow-lg);
	max-height: 0;
	overflow: hidden;
	transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.exm-sticky.exm-sticky--open .exm-sticky__panel {
	max-height: 70vh;
	overflow-y: auto;
}

.exm-sticky__panel-inner {
	padding: 16px 20px;
}

/* Sticky panel tree tweaks */
.exm-sticky__panel .exm-tree {
	/* Same tree styles, no changes needed */
}

/* ==========================================================================
   Overlay / backdrop when sticky panel is open
   ========================================================================== */

.exm-backdrop {
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, 0.2);
	z-index: 99989;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.3s ease;
}

.exm-backdrop--visible {
	opacity: 1;
	pointer-events: auto;
}

/* ==========================================================================
   WP Admin Bar offset
   ========================================================================== */

.admin-bar .exm-sticky {
	top: calc( 32px + var(--exm-sticky-offset) );
}

@media screen and (max-width: 782px) {
	.admin-bar .exm-sticky {
		top: calc( 46px + var(--exm-sticky-offset) );
	}
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media screen and (max-width: 600px) {
	.exm-contextual {
		padding: 12px 14px;
		margin-bottom: 20px;
	}

	.exm-tree .exm-tree {
		padding-left: 16px;
	}

	.exm-link {
		font-size: 13px;
	}

	li:not(.exm-has-children) > .exm-node {
		padding-left: 24px;
	}

	.exm-sticky__label {
		font-size: 13px;
	}

	.exm-sticky__panel-inner {
		padding: 12px 14px;
	}
}