/* =============================================================================
   Table of Contents Widget — d500-toc
   ============================================================================= */

/* Base container */
.d500-toc {
	margin: 0;
	padding: 0;
}

/* Header / title */
.d500-toc__header {
	display: block;
}

/* List reset */
.d500-toc__list {
	margin: 0;
	padding-left: 20px;
	list-style: none;
}

.d500-toc__list li {
	position: relative;
	margin-bottom: 12px;
	padding-left: 20px;
}

/* Heading level indentation */
.d500-toc__list li.h3 { padding-left: 28px; }
.d500-toc__list li.h4 { padding-left: 36px; }
.d500-toc__list li.h5 { padding-left: 44px; }
.d500-toc__list li.h6 { padding-left: 52px; }

/* Links */
.d500-toc__list a {
	text-decoration: none;
	color: inherit;
}

.d500-toc__list a:hover {
	text-decoration: underline;
}

/* Default: hide pseudo-element marker */
.d500-toc__list li::before {
	content: none;
}

/* ---- Marker: bullet ---- */
.d500-toc--marker-bullet .d500-toc__list li {
	padding-left: 20px;
}

.d500-toc--marker-bullet .d500-toc__list li::before {
	content: '';
	position: absolute;
	left: 4px;
	top: 0.55em;
	width: 6px;
	height: 6px;
	border-radius: 50%;
	background-color: currentColor;
}

/* ---- Marker: number ---- */
.d500-toc--marker-number .d500-toc__list {
	counter-reset: d500-toc-num;
}

.d500-toc--marker-number .d500-toc__list li {
	counter-increment: d500-toc-num;
	padding-left: 24px;
}

.d500-toc--marker-number .d500-toc__list li::before {
	content: counter(d500-toc-num) '.';
	position: absolute;
	left: 0;
	top: 0;
	color: currentColor;
}

/* ---- Marker: letter ---- */
.d500-toc--marker-letter .d500-toc__list {
	counter-reset: d500-toc-letter;
}

.d500-toc--marker-letter .d500-toc__list li {
	counter-increment: d500-toc-letter;
	padding-left: 24px;
}

.d500-toc--marker-letter .d500-toc__list li::before {
	content: counter(d500-toc-letter, upper-alpha) '.';
	position: absolute;
	left: 0;
	top: 0;
	color: currentColor;
}

/* ---- Marker: vertical line ---- */
.d500-toc--marker-vertical-line .d500-toc__list li {
	padding-left: 14px;
}

.d500-toc--marker-vertical-line .d500-toc__list li::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0;
	width: 2px;
	height: 100%;
	background-color: currentColor;
}

/* ---- Marker: horizontal line ---- */
.d500-toc--marker-horizontal-line .d500-toc__list li {
	padding-left: 22px;
}

.d500-toc--marker-horizontal-line .d500-toc__list li::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0.85em;
	width: 14px;
	height: 2px;
	background-color: currentColor;
}

/* ---- Active state ---- */
.d500-toc__list li.d500-toc__item--active > a {
	font-weight: 600;
}

/* ---- Mobile collapse ---- */

/* Mobile bar: always renders */
.d500-toc__mobile-bar {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 8px;
	margin-bottom: 12px;
}

/* Wraps title + subtitle vertically */
.d500-toc__mobile-text {
	display: flex;
	flex-direction: column;
	gap: 2px;
	flex: 1;
}

/* Subtitle and toggle: always hidden unless collapsible is active on mobile */
.d500-toc__mobile-subtitle {
	display: none;
	font-size: 0.9em;
	opacity: 0.75;
	line-height: 1.4;
}

.d500-toc__toggle-btn {
	display: none;
	background: none;
	border: none;
	padding: 0;
	cursor: pointer;
	color: inherit;
	flex-shrink: 0;
	align-self: center;
	line-height: 1;
}

.d500-toc__toggle-btn svg {
	display: block;
	transition: transform 0.25s ease;
}

/* Mobile: activate collapse UI only when .d500-toc--collapsible is present */
@media (max-width: 767px) {
	.d500-toc--collapsible .d500-toc__mobile-subtitle {
		display: block;
	}

	.d500-toc--collapsible .d500-toc__toggle-btn {
		display: flex;
		align-items: center;
	}

	.d500-toc--collapsible .d500-toc__list {
		display: none;
		margin-bottom: 0;
	}

	.d500-toc--collapsible.d500-toc--open .d500-toc__list {
		display: block;
	}

	.d500-toc--collapsible.d500-toc--open .d500-toc__toggle-btn svg {
		transform: rotate( 180deg );
	}

	.d500-toc--collapsible.d500-toc--open .d500-toc__toggle-btn {
		align-self: flex-start;
	}
}