/**
 * JIT Table of Contents — single post sidebar
 */

.jit-toc-widget__sticky {
	padding: 0;
}

/* Header */
.jit-toc-widget__header {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	margin-bottom: 0.65rem;
	padding-bottom: 0;
	border-bottom: none;
}

.jit-single-post .jit-toc-widget__header::after {
	content: "";
	display: block;
	flex-basis: 100%;
	width: 100%;
	height: 2px;
	margin-top: 0.55rem;
	background: var(--fs-color-primary);
	border-radius: 1px;
}

.jit-single-post .jit-toc-widget__header {
	flex-wrap: wrap;
}

.jit-toc-widget__icon {
	display: inline-flex;
	color: var(--fs-color-primary);
	flex-shrink: 0;
}

.jit-toc-widget__title {
	font-family: var(--jit-font-sans);
	font-size: 0.75rem;
	font-weight: 700;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--fs-color-primary);
	line-height: 1.3;
}

/* Reading progress */
.jit-toc-widget__progress {
	height: 3px;
	margin-bottom: 0.85rem;
	background: color-mix(in srgb, var(--fs-color-primary) 12%, var(--jit-color-border));
	border-radius: 999px;
	overflow: hidden;
}

.jit-toc-widget__progress-bar {
	display: block;
	width: 0;
	height: 100%;
	background: var(--fs-color-primary);
	border-radius: 999px;
	transition: width 0.12s ease-out;
}

/* Scrollable nav */
.jit-toc-widget__nav {
	max-height: min(var(--jit-toc-max-height, 420px), 55vh);
	overflow-y: auto;
	overflow-x: hidden;
	overscroll-behavior: contain;
	scrollbar-width: thin;
	scrollbar-color: color-mix(in srgb, var(--fs-color-primary) 40%, transparent) transparent;
}

.jit-toc-widget__nav::-webkit-scrollbar {
	width: 5px;
}

.jit-toc-widget__nav::-webkit-scrollbar-thumb {
	background: color-mix(in srgb, var(--fs-color-primary) 35%, var(--jit-color-border));
	border-radius: 999px;
}

.jit-toc-widget__list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.jit-toc-widget__item {
	margin: 0 0 0.35rem;
}

.jit-toc-widget__item:last-child {
	margin-bottom: 0.15rem;
}

.jit-toc-widget__link {
	display: block;
	padding: 0.55rem 0.65rem;
	font-family: var(--jit-font-sans);
	font-size: 0.8125rem;
	font-weight: 600;
	line-height: 1.4;
	color: var(--jit-color-text);
	text-decoration: none;
	border-radius: var(--jit-radius-sm);
	transition:
		background var(--jit-transition),
		color var(--jit-transition);
}

.jit-toc-widget__link:hover {
	color: var(--fs-color-primary);
	background: color-mix(in srgb, var(--fs-color-primary) 6%, var(--jit-color-surface));
}

.jit-toc-widget__item.is-active .jit-toc-widget__link {
	color: var(--fs-color-primary);
	background: color-mix(in srgb, var(--fs-color-primary) 10%, var(--jit-color-surface-alt));
}

/* Heading depth */
.jit-toc-widget__item--h3 .jit-toc-widget__link {
	padding-left: 1.15rem;
	font-size: 0.75rem;
	font-weight: 500;
}

.jit-toc-widget__item--h4 .jit-toc-widget__link {
	padding-left: 1.65rem;
	font-size: 0.75rem;
	font-weight: 500;
	color: var(--jit-color-text-muted);
}

.jit-toc-widget__item--h4.is-active .jit-toc-widget__link {
	color: var(--fs-color-primary);
}

/* TOC list scroll when many headings (inside widget card) */
.jit-single-post .jit-toc-widget__nav {
	max-height: min(var(--jit-toc-max-height, 360px), 45vh);
	overflow-y: auto;
}

@media (max-width: 849px) {
	.jit-toc-widget__nav {
		max-height: min(var(--jit-toc-max-height, 320px), 40vh);
		overflow-y: auto;
	}
}

/* ── Mobile FAB + bottom sheet ── */

.jit-toc-fab,
.jit-toc-sheet,
.jit-toc-sheet__backdrop {
	display: none;
}

@media (max-width: 849px) {
	.jit-toc-fab {
		display: inline-flex;
		align-items: center;
		justify-content: center;
		position: fixed;
		left: 0.85rem;
		top: 50%;
		transform: translateY(-50%);
		z-index: 10050;
		width: 3rem;
		height: 3rem;
		padding: 0;
		border: none;
		border-radius: 50%;
		background: var(--fs-color-primary);
		color: #fff;
		box-shadow: 0 4px 14px color-mix(in srgb, var(--fs-color-primary) 35%, transparent);
		cursor: pointer;
		transition:
			transform var(--jit-transition),
			box-shadow var(--jit-transition),
			background var(--jit-transition);
	}

	.jit-toc-fab:hover,
	.jit-toc-fab:focus-visible {
		background: color-mix(in srgb, var(--fs-color-primary) 88%, #000);
		box-shadow: 0 6px 18px color-mix(in srgb, var(--fs-color-primary) 42%, transparent);
		outline: none;
	}

	.jit-toc-fab:active {
		transform: translateY(-50%) scale(0.96);
	}

	.jit-toc-sheet {
		display: block !important;
		position: fixed;
		inset: auto 0 0;
		z-index: 10052;
		pointer-events: none;
		visibility: hidden;
	}

	.jit-toc-sheet.is-open {
		pointer-events: auto;
		visibility: visible;
	}

	.jit-toc-sheet[hidden] {
		display: none !important;
	}

	.jit-toc-sheet__backdrop {
		display: block !important;
		position: fixed;
		inset: 0;
		z-index: 10051;
		padding: 0;
		border: none;
		background: rgba(15, 23, 42, 0.45);
		opacity: 0;
		transition: opacity 0.28s ease;
		cursor: pointer;
	}

	.jit-toc-sheet__backdrop.is-visible {
		opacity: 1;
		visibility: visible;
	}

	.jit-toc-sheet__backdrop[hidden] {
		display: none !important;
	}

	.jit-toc-sheet__backdrop:not(.is-visible) {
		visibility: hidden;
		pointer-events: none;
	}

	.jit-toc-sheet__panel {
		background: var(--jit-color-surface);
		border: 1px solid var(--jit-color-border);
		border-bottom: none;
		border-radius: 1.35rem 1.35rem 0 0;
		padding: 1.15rem 1.1rem calc(1.1rem + env(safe-area-inset-bottom, 0px));
		box-shadow: 0 -8px 32px rgba(15, 23, 42, 0.12);
		max-height: min(88vh, 640px);
		display: flex;
		flex-direction: column;
		transform: translateY(100%);
		transition: transform 0.28s cubic-bezier(0.32, 0.72, 0, 1);
	}

	.jit-toc-sheet.is-open .jit-toc-sheet__panel {
		transform: translateY(0);
	}

	.jit-toc-sheet .jit-toc-widget__header::after {
		display: none;
	}

	.jit-toc-sheet__header {
		flex-wrap: nowrap;
		align-items: center;
		margin-bottom: 0;
		padding-bottom: 0.85rem;
		border-bottom: 1px solid var(--jit-color-border);
	}

	.jit-toc-sheet__icon {
		display: inline-flex;
		align-items: center;
		justify-content: center;
		width: 2rem;
		height: 2rem;
		border-radius: 0.45rem;
		background: var(--fs-color-primary);
		color: #fff;
		flex-shrink: 0;
	}

	.jit-toc-sheet__nav {
		flex: 1 1 auto;
		min-height: 0;
		max-height: none;
		margin: 0.85rem 0 0;
		padding-right: 0.15rem;
		overflow-y: auto;
		-webkit-overflow-scrolling: touch;
	}

	.jit-toc-sheet__nav .jit-toc-widget__item {
		margin-bottom: 0.55rem;
	}

	.jit-toc-sheet__nav .jit-toc-widget__link {
		display: flex;
		align-items: flex-start;
		gap: 0.7rem;
		padding: 0.35rem 0.15rem;
		font-size: 0.875rem;
		font-weight: 500;
		border-radius: 0;
		background: transparent !important;
	}

	.jit-toc-sheet__nav .jit-toc-widget__link::before {
		content: "";
		flex-shrink: 0;
		width: 1.125rem;
		height: 1.125rem;
		margin-top: 0.2rem;
		border-radius: 0.3rem;
		background: color-mix(in srgb, var(--jit-color-border) 75%, var(--jit-color-surface-alt));
	}

	.jit-toc-sheet__nav .jit-toc-widget__item.is-active .jit-toc-widget__link {
		color: var(--fs-color-primary);
		font-weight: 600;
	}

	.jit-toc-sheet__nav .jit-toc-widget__item.is-active .jit-toc-widget__link::before {
		background: color-mix(in srgb, var(--fs-color-primary) 22%, var(--jit-color-surface-alt));
	}

	.jit-toc-sheet__nav .jit-toc-widget__item--h3 .jit-toc-widget__link {
		padding-left: 1.35rem;
		font-size: 0.8125rem;
	}

	.jit-toc-sheet__nav .jit-toc-widget__item--h4 .jit-toc-widget__link {
		padding-left: 2rem;
		font-size: 0.8125rem;
	}

	.jit-toc-sheet__footer {
		flex-shrink: 0;
		margin-top: 0.85rem;
		padding-top: 0.85rem;
		border-top: 1px solid var(--jit-color-border);
	}

	.jit-toc-sheet__progress-meta {
		display: flex;
		align-items: center;
		justify-content: space-between;
		gap: 0.75rem;
		margin-bottom: 0.55rem;
	}

	.jit-toc-sheet__progress-label {
		font-family: var(--jit-font-sans);
		font-size: 0.6875rem;
		font-weight: 600;
		letter-spacing: 0.08em;
		text-transform: uppercase;
		color: var(--jit-color-text-muted);
	}

	.jit-toc-sheet__progress-value {
		font-family: var(--jit-font-sans);
		font-size: 0.8125rem;
		font-weight: 700;
		color: var(--fs-color-primary);
	}

	.jit-toc-sheet__progress {
		height: 4px;
		margin-bottom: 0;
	}

	body.jit-toc-sheet-open {
		overflow: hidden;
	}
}