/* SERPsKit Sticky TOC — Frontend Styles */

.serpskit-stoc {
	box-sizing: border-box;
	width: var(--stoc-width, 280px);
	max-width: 100%;
	margin: 0 0 1.5em 0;
	padding: 0;
	background: var(--stoc-bg, #fff);
	border: var(--stoc-border-width, 1px) solid var(--stoc-border, #e5e7eb);
	border-radius: var(--stoc-radius, 12px);
	z-index: 50;
	-webkit-font-smoothing: antialiased;
}

.serpskit-stoc *,
.serpskit-stoc *::before,
.serpskit-stoc *::after {
	box-sizing: border-box;
}

.serpskit-stoc__inner {
	padding: var(--stoc-padding, 25px);
}

/* Header */
.serpskit-stoc__header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	margin: 0 0 18px 0;
}

.serpskit-stoc__title {
	margin: 0;
	padding: 0;
	font-size: var(--stoc-title-size, 16px);
	line-height: 1.2;
	font-weight: 700;
	color: var(--stoc-title-color, #000);
	text-transform: uppercase;
	letter-spacing: var(--stoc-title-spacing, 1px);
}

.serpskit-stoc__toggle {
	display: none;
	align-items: center;
	justify-content: center;
	width: 28px;
	height: 28px;
	padding: 0;
	margin: 0;
	background: transparent;
	border: 0;
	color: var(--stoc-title-color, #000);
	cursor: pointer;
	border-radius: 6px;
	transition: background-color 150ms ease, transform 200ms ease;
}

.serpskit-stoc__toggle:hover {
	background: rgba(0, 0, 0, 0.04);
}

.serpskit-stoc.is-collapsed .serpskit-stoc__toggle svg {
	transform: rotate(-90deg);
}

/* List */
.serpskit-stoc__list {
	list-style: none;
	margin: 0;
	padding: 0;
	counter-reset: none;
}

.serpskit-stoc__item {
	margin: 0 0 14px 0;
	padding: 0;
	list-style: none;
}

.serpskit-stoc__item:last-child {
	margin-bottom: 0;
}

.serpskit-stoc__link {
	display: flex;
	align-items: flex-start;
	gap: 14px;
	padding: 4px 0;
	text-decoration: none;
	color: var(--stoc-text, #1a1a1a);
	font-size: var(--stoc-font-size, 16px);
	line-height: 1.4;
	transition: color 150ms ease;
}

.serpskit-stoc__link:hover,
.serpskit-stoc__link:focus {
	color: var(--stoc-hover, #1d6ef5);
	text-decoration: none;
	outline: none;
}

.serpskit-stoc__link:focus-visible {
	outline: 2px solid var(--stoc-hover, #1d6ef5);
	outline-offset: 2px;
	border-radius: 4px;
}

.serpskit-stoc__num {
	flex-shrink: 0;
	min-width: 24px;
	font-weight: 700;
	color: var(--stoc-num, #1d6ef5);
	font-size: var(--stoc-font-size, 16px);
	line-height: 1.4;
	font-variant-numeric: tabular-nums;
}

.serpskit-stoc__text {
	flex: 1 1 auto;
	display: block;
	word-wrap: break-word;
	overflow-wrap: break-word;
}

/* Active state */
.serpskit-stoc__item.is-active > .serpskit-stoc__link {
	color: var(--stoc-active, #1d6ef5);
}

.serpskit-stoc__item.is-active > .serpskit-stoc__link .serpskit-stoc__num {
	color: var(--stoc-active, #1d6ef5);
}

/* Sublist (h3, h4) */
.serpskit-stoc__sublist {
	list-style: none;
	margin: 8px 0 0 38px;
	padding: 0;
	border-left: 2px solid var(--stoc-border, #e5e7eb);
}

.serpskit-stoc__subitem {
	margin: 0;
	padding: 0;
	list-style: none;
}

.serpskit-stoc__subitem--l4 {
	padding-left: 12px;
}

.serpskit-stoc__link--sub {
	padding: 4px 0 4px 12px;
	font-size: calc(var(--stoc-font-size, 16px) - 1px);
	color: var(--stoc-text, #1a1a1a);
	opacity: 0.85;
}

.serpskit-stoc__link--sub:hover {
	opacity: 1;
}

/* Floating (desktop) — applied by JS */
.serpskit-stoc.is-floating {
	position: fixed;
	margin: 0;
	max-height: calc(100vh - var(--stoc-top-offset, 100px) - 40px);
	overflow-y: auto;
	overflow-x: hidden;
	scrollbar-width: thin;
}

.serpskit-stoc.is-floating::-webkit-scrollbar {
	width: 6px;
}

.serpskit-stoc.is-floating::-webkit-scrollbar-thumb {
	background: var(--stoc-border, #e5e7eb);
	border-radius: 3px;
}

/* Hidden state (used during JS init / off-screen) */
.serpskit-stoc.is-hidden {
	visibility: hidden;
}

/* Collapsed (mobile) */
.serpskit-stoc.is-collapsible .serpskit-stoc__toggle {
	display: inline-flex;
}

.serpskit-stoc.is-collapsed .serpskit-stoc__list {
	display: none;
}

/* Print: keep inline, hide as ornamental */
@media print {
	.serpskit-stoc {
		display: none !important;
	}
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
	.serpskit-stoc__link,
	.serpskit-stoc__toggle,
	.serpskit-stoc__toggle svg {
		transition: none !important;
	}

	html {
		scroll-behavior: auto !important;
	}
}