/**
 * GosSeo — mục lục trong bài. Chỉ nạp ở trang có mục lục.
 *
 * Màu nhấn: `--gosseo-toc-mau` (cài đặt) → `--primary-color` (Flatsome) → xanh mặc định.
 * Mở/đóng dùng <details>, nên không cần JS; toc.js chỉ lo cuộn mượt, mục đang đọc, nút nổi.
 */
.gosseo-toc {
	--gosseo-toc-ac: var(--gosseo-toc-mau, var(--primary-color, #1e66d0));
	--gosseo-toc-vien: #e3e6eb;
	--gosseo-toc-nhat: #f5f7fa;
	--gosseo-toc-chu: inherit;
	--gosseo-toc-phu: #6b7280;
	margin: 0 0 1.5em;
	font-size: 0.95em;
	line-height: 1.5;
}

.gosseo-toc ol {
	list-style: none;
	margin: 0;
	padding: 0;
}

.gosseo-toc li {
	margin: 0.4em 0 0;
	padding: 0;
}

.gosseo-toc ol ol {
	padding-left: 1.25em;
}

.gosseo-toc ol ol a {
	color: var(--gosseo-toc-phu);
	font-size: 0.95em;
}

.gosseo-toc a {
	display: inline-flex;
	gap: 0.4em;
	color: var(--gosseo-toc-chu);
	text-decoration: none;
}

.gosseo-toc a:hover,
.gosseo-toc a.is-active {
	color: var(--gosseo-toc-ac);
}

.gosseo-toc-so {
	min-width: 1.2em;
	color: var(--gosseo-toc-ac);
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}

.gosseo-toc-dau {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75em;
	list-style: none;
	cursor: default;
}

summary.gosseo-toc-dau {
	cursor: pointer;
}

.gosseo-toc-dau::-webkit-details-marker {
	display: none;
}

.gosseo-toc-tieu-de {
	font-weight: 700;
	letter-spacing: 0.04em;
	text-transform: uppercase;
}

.gosseo-toc-mui::before {
	content: "";
	display: inline-block;
	width: 0.5em;
	height: 0.5em;
	border-top: 2px solid var(--gosseo-toc-ac);
	border-left: 2px solid var(--gosseo-toc-ac);
	transform: rotate(45deg) translate(0.12em, 0.12em);
	transition: transform 0.2s;
}

details:not([open]) > .gosseo-toc-dau .gosseo-toc-mui::before {
	transform: rotate(225deg) translate(0.12em, 0.12em);
}

/* 1 — Hộp viền */
.gosseo-toc--hop .gosseo-toc-hop {
	border: 1px solid var(--gosseo-toc-vien);
	border-radius: 8px;
}

.gosseo-toc--hop .gosseo-toc-dau {
	padding: 0.8em 1.1em;
}

.gosseo-toc--hop [open] > .gosseo-toc-dau,
.gosseo-toc--hop div > .gosseo-toc-dau {
	border-bottom: 1px solid var(--gosseo-toc-vien);
}

.gosseo-toc--hop .gosseo-toc-than {
	padding: 0.6em 1.1em 1em 2em;
}

/* 2 — Nền nhạt */
.gosseo-toc--nen .gosseo-toc-hop {
	padding: 0.9em 1.1em;
	border-radius: 10px;
	background: var(--gosseo-toc-nhat);
}

.gosseo-toc--nen .gosseo-toc-tieu-de {
	letter-spacing: 0;
	text-transform: none;
}

.gosseo-toc--nen .gosseo-toc-than {
	padding-top: 0.4em;
}

/* 3 — Viền nhấn trái */
.gosseo-toc--vien .gosseo-toc-hop {
	padding: 0.2em 0 0.2em 1em;
	border-left: 4px solid var(--gosseo-toc-ac);
}

.gosseo-toc--vien .gosseo-toc-dau {
	justify-content: flex-start;
}

.gosseo-toc--vien .gosseo-toc-tieu-de {
	color: var(--gosseo-toc-phu);
	font-size: 0.85em;
}

/* 4 — Thanh tiêu đề màu */
.gosseo-toc--thanh .gosseo-toc-hop {
	overflow: hidden;
	border: 1px solid var(--gosseo-toc-vien);
	border-radius: 8px;
}

.gosseo-toc--thanh .gosseo-toc-dau {
	padding: 0.65em 1em;
	background: var(--gosseo-toc-ac);
	color: #fff;
}

.gosseo-toc--thanh .gosseo-toc-mui::before {
	border-color: #fff;
}

.gosseo-toc--thanh .gosseo-toc-than {
	padding: 0.6em 1.1em 1em;
}

/* 5 — Hai cột */
.gosseo-toc--hai_cot .gosseo-toc-hop {
	padding: 0.8em 1.1em;
	border: 1px solid var(--gosseo-toc-vien);
	border-radius: 8px;
}

.gosseo-toc--hai_cot .gosseo-toc-than > ol {
	columns: 2 14em;
	column-gap: 2em;
}

.gosseo-toc--hai_cot .gosseo-toc-than > ol > li {
	break-inside: avoid;
}

/* 6 — Gọn một dòng */
.gosseo-toc--mot_dong .gosseo-toc-dau {
	display: inline-flex;
	padding: 0.4em 1em;
	border: 1px solid var(--gosseo-toc-vien);
	border-radius: 999px;
}

.gosseo-toc--mot_dong .gosseo-toc-tieu-de {
	font-size: 0.85em;
}

.gosseo-toc-dem {
	color: var(--gosseo-toc-phu);
	font-size: 0.85em;
}

.gosseo-toc--mot_dong .gosseo-toc-than {
	margin-top: 0.6em;
	padding: 0.6em 1.1em 1em;
	border: 1px solid var(--gosseo-toc-vien);
	border-radius: 10px;
}

/* Tiêu đề đích: chừa chỗ cho header dính của theme khi cuộn tới. */
h2[id],
h3[id],
h4[id],
h5[id],
h6[id] {
	scroll-margin-top: var(--gosseo-toc-bu, 90px);
}

/* Nút nổi + bảng trượt (tạo bằng toc.js) */
.gosseo-toc-noi {
	position: fixed;
	z-index: 9990;
	right: 16px;
	bottom: 90px;
	display: grid;
	place-items: center;
	width: 46px;
	height: 46px;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: var(--gosseo-toc-ac, var(--primary-color, #1e66d0));
	box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
	color: #fff;
	cursor: pointer;
	opacity: 0;
	pointer-events: none;
	transform: translateY(8px);
	transition: opacity 0.2s, transform 0.2s;
}

.gosseo-toc-noi.is-trai {
	right: auto;
	left: 16px;
}

.gosseo-toc-noi.is-hien {
	opacity: 1;
	pointer-events: auto;
	transform: none;
}

.gosseo-toc-noi svg {
	width: 22px;
	height: 22px;
}

.gosseo-toc-noi.chi-dt {
	display: none;
}

@media (max-width: 849px) {
	.gosseo-toc-noi.chi-dt {
		display: grid;
	}
}

.gosseo-toc-man {
	position: fixed;
	z-index: 9991;
	inset: 0;
	background: rgba(17, 24, 39, 0.4);
}

.gosseo-toc-bang {
	position: fixed;
	z-index: 9992;
	right: 0;
	bottom: 0;
	left: 0;
	max-height: 70vh;
	overflow: auto;
	padding: 0.75em 1.25em calc(1.25em + env(safe-area-inset-bottom, 0px));
	border-radius: 16px 16px 0 0;
	background: #fff;
	box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.18);
	color: #1f2937;
}

@media (min-width: 850px) {
	.gosseo-toc-bang {
		right: 24px;
		bottom: 150px;
		left: auto;
		width: 360px;
		border-radius: 12px;
	}

	.gosseo-toc-bang.is-trai {
		right: auto;
		left: 24px;
	}
}

.gosseo-toc-bang .gosseo-toc {
	margin: 0;
}

.gosseo-toc-bang-dau {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 0.5em;
	font-weight: 700;
}

.gosseo-toc-bang-dong {
	padding: 0.25em 0.5em;
	border: 0;
	background: none;
	color: inherit;
	font-size: 1.4em;
	line-height: 1;
	cursor: pointer;
}

.gosseo-toc-ux {
	padding: 12px 16px;
	border: 1px dashed #c3c4c7;
	border-radius: 6px;
	color: #50575e;
}

@media (prefers-reduced-motion: reduce) {
	.gosseo-toc-mui::before,
	.gosseo-toc-noi {
		transition: none;
	}
}