/**
 * Raoa ToC Linker frontend styles — modern hierarchical card UI.
 *
 * @package Raoa_Toc_Linker
 */

.raoa-toc-linker {
	--raoa-toc-linker-border: #e4e7ec;
	--raoa-toc-linker-bg: #f8f9fb;
	--raoa-toc-linker-link: #2f6fed;
	--raoa-toc-linker-link-hover: #1d4ed8;
	--raoa-toc-linker-active: #2f6fed;
	--raoa-toc-linker-text: #1a2332;
	--raoa-toc-linker-text-muted: #667085;
	--raoa-toc-linker-line: #d0d5dd;
	--raoa-toc-linker-badge-bg: #2f6fed;
	--raoa-toc-linker-badge-nested-bg: #e8f1fb;
	--raoa-toc-linker-badge-deep-bg: #eef0f3;
	--raoa-toc-linker-radius: 12px;
	--raoa-toc-linker-pad: 1.15rem 1.25rem;
	--raoa-toc-linker-shadow: none;
	--raoa-toc-linker-badge-size: 1.65rem;
	
	box-sizing: border-box;
	display: flex;
	flex-direction: column;
	gap: 0.85rem;
	margin: 0 0 1.75em;
	padding: var(--raoa-toc-linker-pad);
	color: var(--raoa-toc-linker-text);
	background: var(--raoa-toc-linker-bg);
	border: 1px solid var(--raoa-toc-linker-border);
	border-radius: var(--raoa-toc-linker-radius);
	box-shadow: var(--raoa-toc-linker-shadow);
	font-size: 1rem;
	line-height: 1.45;
}

.raoa-toc-linker *,
.raoa-toc-linker *::before,
.raoa-toc-linker *::after {
	box-sizing: border-box;
}

/* -------------------------------------------------------------------------
   Header
   ------------------------------------------------------------------------- */

.raoa-toc-linker-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
}

.raoa-toc-linker-title {
	display: inline-flex;
	align-items: center;
	gap: 0.55rem;
	margin: 0;
	flex: 1 1 auto;
	font-weight: 700;
	font-size: 1.125rem;
	line-height: 1.3;
	color: var(--raoa-toc-linker-text);
}

.raoa-toc-linker-title__icon {
	display: inline-flex;
	flex: 0 0 auto;
	color: var(--raoa-toc-linker-link);
}

.raoa-toc-linker-title__icon svg {
	display: block;
	width: 1.4rem;
	height: 1.4rem;
}

.raoa-toc-linker-title__text {
	min-width: 0;
}

/* -------------------------------------------------------------------------
   Show / Hide control
   ------------------------------------------------------------------------- */

.raoa-toc-linker-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.35rem;
	flex: 0 0 auto;
	margin: 0;
	padding: 0.35rem 0.65rem;
	border: 1px solid var(--raoa-toc-linker-border);
	border-radius: 8px;
	background: #fff;
	color: var(--raoa-toc-linker-text-muted);
	font: inherit;
	font-size: 0.72rem;
	font-weight: 700;
	line-height: 1;
	letter-spacing: 0.04em;
	cursor: pointer;
	transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.raoa-toc-linker-toggle:hover {
	border-color: var(--raoa-toc-linker-link);
	color: var(--raoa-toc-linker-link);
	background: #fff;
}

.raoa-toc-linker-toggle:focus {
	outline: none;
}

.raoa-toc-linker-toggle:focus-visible {
	outline: 2px solid var(--raoa-toc-linker-link);
	outline-offset: 2px;
}

.raoa-toc-linker-toggle__text {
	text-transform: uppercase;
	line-height: 1;
}

.raoa-toc-linker-toggle__eye,
.raoa-toc-linker-toggle__chevron {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 0.95rem;
	height: 0.95rem;
}

.raoa-toc-linker-toggle__eye svg,
.raoa-toc-linker-toggle__chevron svg {
	display: block;
	width: 100%;
	height: 100%;
}

.raoa-toc-linker-toggle__chevron {
	transition: transform 0.2s ease;
}

/* Expanded = Hide + eye-off + chevron up */
.raoa-toc-linker-toggle[aria-expanded="true"] .raoa-toc-linker-toggle__eye-on {
	display: none;
}

.raoa-toc-linker-toggle[aria-expanded="true"] .raoa-toc-linker-toggle__chevron {
	transform: rotate(180deg);
}

/* Collapsed = Show + eye-on + chevron down */
.raoa-toc-linker-toggle[aria-expanded="false"] .raoa-toc-linker-toggle__eye-off {
	display: none;
}

.raoa-toc-linker-toggle[aria-expanded="false"] .raoa-toc-linker-toggle__chevron {
	transform: rotate(0deg);
}

/* -------------------------------------------------------------------------
   Nav / lists
   ------------------------------------------------------------------------- */

.raoa-toc-linker-nav {
	margin: 0;
}

.raoa-toc-linker-collapsed .raoa-toc-linker-nav[hidden] {
	display: none;
}

.raoa-toc-linker-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.raoa-toc-linker-item {
	position: relative;
	margin: 0;
}

.raoa-toc-linker-row {
	display: flex;
	align-items: center;
	gap: 0.65rem;
	min-height: 2rem;
	padding: 0.2rem 0;
}

.raoa-toc-linker-link {
	flex: 1 1 auto;
	min-width: 0;
	color: var(--raoa-toc-linker-text);
	font-weight: 600;
	text-decoration: none;
	transition: color 0.12s ease;
}

.raoa-toc-linker-link:hover,
.raoa-toc-linker-link:focus {
	color: var(--raoa-toc-linker-link);
	text-decoration: none;
}

.raoa-toc-linker-link:focus {
	outline: none;
}

.raoa-toc-linker-link:focus-visible {
	outline: 2px solid var(--raoa-toc-linker-link);
	outline-offset: 2px;
	border-radius: 4px;
}

.raoa-toc-linker-link.raoa-toc-linker-active {
	color: var(--raoa-toc-linker-active-color, var(--raoa-toc-linker-active));
}

/* Nested link weight / color */
.raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-link {
	font-weight: 500;
	color: #344054;
}

.raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-link:hover {
	font-weight: 500;
	color: var(--raoa-toc-linker-link);
	transition: color 0.12s ease;
}

.raoa-toc-linker-list .raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-link {
	font-weight: 400;
	color: var(--raoa-toc-linker-text-muted);
	transition: color 0.12s ease;
}

.raoa-toc-linker-list .raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-link:hover {
	color: var(--raoa-toc-linker-link);
}

/* -------------------------------------------------------------------------
   Number badges (CSS counters)
   ------------------------------------------------------------------------- */

.raoa-toc-linker-badge {
	display: none;
	flex: 0 0 auto;
	align-items: center;
	justify-content: center;
	min-width: var(--raoa-toc-linker-badge-size);
	height: var(--raoa-toc-linker-badge-size);
	padding: 0 0.35rem;
	border-radius: 50%;
	background: var(--raoa-toc-linker-badge-bg);
	color: #fff;
	font-size: 0.72rem;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
	line-height: 1;
	z-index: 1;
}

.raoa-toc-linker-counter-decimal .raoa-toc-linker-badge,
.raoa-toc-linker-counter-numeric .raoa-toc-linker-badge,
.raoa-toc-linker-counter-roman .raoa-toc-linker-badge {
	display: inline-flex;
}

.raoa-toc-linker-counter-none .raoa-toc-linker-badge {
	display: none;
}

.raoa-toc-linker-counter-decimal .raoa-toc-linker-list,
.raoa-toc-linker-counter-numeric .raoa-toc-linker-list,
.raoa-toc-linker-counter-roman .raoa-toc-linker-list {
	counter-reset: raoa-toc-linker-item;
}

.raoa-toc-linker-counter-decimal .raoa-toc-linker-item,
.raoa-toc-linker-counter-numeric .raoa-toc-linker-item,
.raoa-toc-linker-counter-roman .raoa-toc-linker-item {
	counter-increment: raoa-toc-linker-item;
}

.raoa-toc-linker-counter-decimal > .raoa-toc-linker-nav > .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-badge::before,
.raoa-toc-linker-counter-decimal .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-badge::before {
	content: counters(raoa-toc-linker-item, ".");
}

/* Top-level: solid circle with single number look when root */
.raoa-toc-linker-counter-decimal > .raoa-toc-linker-nav > .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-badge::before {
	content: counter(raoa-toc-linker-item);
}

.raoa-toc-linker-counter-numeric .raoa-toc-linker-badge::before {
	content: counters(raoa-toc-linker-item, " ");
}

.raoa-toc-linker-counter-numeric > .raoa-toc-linker-nav > .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-badge::before {
	content: counter(raoa-toc-linker-item);
}

.raoa-toc-linker-counter-roman .raoa-toc-linker-badge::before {
	content: counter(raoa-toc-linker-item, lower-roman);
}

/* Nested badges: pill */
.raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-badge {
	min-width: 2rem;
	border-radius: 6px;
	background: var(--raoa-toc-linker-badge-nested-bg);
	color: var(--raoa-toc-linker-link);
	font-weight: 600;
}

.raoa-toc-linker-list .raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-badge {
	background: var(--raoa-toc-linker-badge-deep-bg);
	color: var(--raoa-toc-linker-text-muted);
	font-weight: 500;
}

/* -------------------------------------------------------------------------
   Tree connectors
   ------------------------------------------------------------------------- */

.raoa-toc-linker-item > .raoa-toc-linker-list {
	position: relative;
	margin: 0 0 0.15rem;
	padding: 0 0 0.15rem calc(var(--raoa-toc-linker-badge-size) / 2);
}

.raoa-toc-linker-item > .raoa-toc-linker-list > .raoa-toc-linker-item {
	padding-left: calc(var(--raoa-toc-linker-badge-size) / 2 + 0.85rem);
}

.raoa-toc-linker-item > .raoa-toc-linker-list > .raoa-toc-linker-item::before {
	content: "";
	position: absolute;
	left: calc(var(--raoa-toc-linker-badge-size) / 2);
	top: 0;
	bottom: 0;
	width: 1px;
	background: var(--raoa-toc-linker-line);
}

.raoa-toc-linker-item > .raoa-toc-linker-list > .raoa-toc-linker-item::after {
	content: "";
	position: absolute;
	left: calc(var(--raoa-toc-linker-badge-size) / 2);
	top: 1.05rem;
	width: 0.85rem;
	height: 1px;
	background: var(--raoa-toc-linker-line);
}

.raoa-toc-linker-item > .raoa-toc-linker-list > .raoa-toc-linker-item:last-child::before {
	height: 1.05rem;
	bottom: auto;
}

.raoa-toc-linker-item--branch-collapsed > .raoa-toc-linker-list {
	display: none;
}

.raoa-toc-linker-counter-none .raoa-toc-linker-item > .raoa-toc-linker-list {
	padding-left: 0.75rem;
}

.raoa-toc-linker-counter-none .raoa-toc-linker-item > .raoa-toc-linker-list > .raoa-toc-linker-item {
	padding-left: 1.1rem;
}

.raoa-toc-linker-counter-none .raoa-toc-linker-item > .raoa-toc-linker-list > .raoa-toc-linker-item::before {
	left: 0;
}

.raoa-toc-linker-counter-none .raoa-toc-linker-item > .raoa-toc-linker-list > .raoa-toc-linker-item::after {
	left: 0;
	width: 0.75rem;
}

/* -------------------------------------------------------------------------
   Branch chevron (per-item collapse)
   ------------------------------------------------------------------------- */

.raoa-toc-linker-branch {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex: 0 0 auto;
	width: 1.6rem;
	height: 1.6rem;
	margin: 0;
	padding: 0;
	border: 0;
	border-radius: 6px;
	background: transparent;
	color: #98a2b3;
	cursor: pointer;
	transition: color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.raoa-toc-linker-branch:hover {
	color: var(--raoa-toc-linker-link);
	background: rgba(47, 111, 237, 0.08);
}

.raoa-toc-linker-branch:focus {
	outline: none;
}

.raoa-toc-linker-branch:focus-visible {
	outline: 2px solid var(--raoa-toc-linker-link);
	outline-offset: 1px;
}

.raoa-toc-linker-branch__icon {
	display: inline-flex;
	transition: transform 0.2s ease;
}

.raoa-toc-linker-branch__icon svg {
	display: block;
	width: 1rem;
	height: 1rem;
}

.raoa-toc-linker-branch[aria-expanded="false"] .raoa-toc-linker-branch__icon {
	transform: rotate(-90deg);
}

/* -------------------------------------------------------------------------
   Widget
   ------------------------------------------------------------------------- */

.raoa-toc-linker-widget {
	--raoa-toc-linker-active-color: var(--raoa-toc-linker-active, #2f6fed);
}

.raoa-toc-linker-widget .raoa-toc-linker {
	margin-bottom: 0;
}

.raoa-toc-linker-widget .raoa-toc-linker-item.raoa-toc-linker-active > .raoa-toc-linker-row > .raoa-toc-linker-link,
.raoa-toc-linker-widget .raoa-toc-linker-link.raoa-toc-linker-active {
	color: var(--raoa-toc-linker-active-color);
	font-weight: 600;
}

.raoa-toc-linker-widget-sticky {
	position: sticky;
	top: var(--raoa-toc-linker-sticky-top, 20px);
	z-index: 1;
}

/* -------------------------------------------------------------------------
   Themes
   ------------------------------------------------------------------------- */

.raoa-toc-linker-theme-default {
	--raoa-toc-linker-border: #e4e7ec;
	--raoa-toc-linker-bg: #f8f9fb;
	--raoa-toc-linker-link: #2f6fed;
	--raoa-toc-linker-link-hover: #1d4ed8;
	--raoa-toc-linker-active: #2f6fed;
	--raoa-toc-linker-badge-bg: #2f6fed;
	--raoa-toc-linker-badge-nested-bg: #e8f1fb;
}

.raoa-toc-linker-theme-minimal {
	--raoa-toc-linker-border: transparent;
	--raoa-toc-linker-bg: transparent;
	--raoa-toc-linker-link: #2f6fed;
	--raoa-toc-linker-link-hover: #1d4ed8;
	--raoa-toc-linker-active: #2f6fed;
	--raoa-toc-linker-shadow: none;
	padding: 0.25em 0;
	border: 0;
	background: transparent;
	box-shadow: none;
}

.raoa-toc-linker-theme-minimal .raoa-toc-linker-toggle {
	background: transparent;
}

.raoa-toc-linker-theme-bordered {
	--raoa-toc-linker-border: #1d2327;
	--raoa-toc-linker-bg: #fff;
	--raoa-toc-linker-link: #2f6fed;
	--raoa-toc-linker-link-hover: #1d4ed8;
	--raoa-toc-linker-active: #2f6fed;
	--raoa-toc-linker-pad: 1.2em 1.35em;
	border-width: 2px;
}

.raoa-toc-linker-theme-dark {
	--raoa-toc-linker-border: #3c434a;
	--raoa-toc-linker-bg: #1d2327;
	--raoa-toc-linker-link: #8cbae8;
	--raoa-toc-linker-link-hover: #c5dcf5;
	--raoa-toc-linker-active: #8cbae8;
	--raoa-toc-linker-text: #f0f0f1;
	--raoa-toc-linker-text-muted: #a7aaad;
	--raoa-toc-linker-line: #3c434a;
	--raoa-toc-linker-badge-bg: #3b82f6;
	--raoa-toc-linker-badge-nested-bg: #2c3338;
	--raoa-toc-linker-badge-deep-bg: #2c3338;
	color: #f0f0f1;
}

.raoa-toc-linker-theme-dark .raoa-toc-linker-toggle {
	background: rgba(255, 255, 255, 0.06);
	color: #a7aaad;
	border-color: #3c434a;
}

.raoa-toc-linker-theme-dark .raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-link {
	color: #dcdcde;
}

.raoa-toc-linker-theme-dark .raoa-toc-linker-list .raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-link {
	color: #a7aaad;
}

.raoa-toc-linker-theme-dark .raoa-toc-linker-list .raoa-toc-linker-list > .raoa-toc-linker-item > .raoa-toc-linker-row > .raoa-toc-linker-badge {
	color: #8cbae8;
}

.raoa-toc-linker-theme-custom {
	--raoa-toc-linker-badge-bg: var(--raoa-toc-linker-link);
	--raoa-toc-linker-badge-nested-bg: color-mix(in srgb, var(--raoa-toc-linker-link) 14%, #fff);
}

@supports not (background: color-mix(in srgb, #000 10%, #fff)) {
	.raoa-toc-linker-theme-custom {
		--raoa-toc-linker-badge-nested-bg: #e8f1fb;
	}
}