/* =========================================================
   StudyDunia TOC — Compact Colour Edition
   ========================================================= */

.sd-toc {
	position: relative;
	width: 100%;
	margin: 0 0 20px;
padding: 2px 8px 4px;
box-sizing: border-box;
	background:
		radial-gradient(circle at 96% 0%, rgba(210, 27, 143, .07) 0 52px, transparent 53px),
		radial-gradient(circle at 2% 100%, rgba(37, 99, 235, .07) 0 65px, transparent 66px),
		linear-gradient(135deg, #f8faff 0%, #fbf9ff 52%, #fff8fc 100%);
	border: 1px solid rgba(99, 102, 241, .15);
	border-radius: 12px;
	box-shadow: 0 4px 14px rgba(37, 42, 90, .055);
	font-family: var(--theme-font-body, inherit);
	overflow: hidden;
}

.sd-toc::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	background: linear-gradient(90deg, #2563eb 0%, #4f46e5 50%, #d21b8f 100%);
}

.sd-toc-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	margin: 0;
	padding: 0 0 9px;
	border-bottom: 1px solid rgba(99, 102, 241, .12);
}

.sd-toc-title {
	position: relative;
	margin: 0;
	padding: 0;
	font-family: var(--theme-font-heading, inherit);
	font-size: 18px;
	font-weight: 800;
	line-height: 1.2;
	color: var(--theme-text, #111827);
}

.sd-toc-title::after {
	content: '';
	display: block;
	width: 38px;
	height: 3px;
	margin-top: 6px;
	border-radius: 999px;
	background: linear-gradient(90deg, #2563eb, #d21b8f);
}

.sd-toc-toggle {
	flex: 0 0 auto;
	display: inline-flex;
	align-items: center;
	gap: 6px;
	margin: 0;
	padding: 5px 9px;
	border: 1px solid rgba(37, 99, 235, .17);
	border-radius: 999px;
	background: rgba(255, 255, 255, .72);
	color: #2456d9;
	font: inherit;
	font-size: 11px;
	font-weight: 750;
	line-height: 1.1;
	cursor: pointer;
	box-shadow: 0 1px 5px rgba(37, 99, 235, .05);
	transition: background-color .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}

.sd-toc-toggle:hover,
.sd-toc-toggle:focus-visible {
	color: #fff;
	background: linear-gradient(135deg, #2563eb, #7c3aed);
	border-color: transparent;
}

.sd-toc-toggle:active { transform: translateY(1px); }

.sd-toc-toggle:focus-visible {
	outline: 2px solid rgba(210, 27, 143, .28);
	outline-offset: 2px;
}

.sd-toc-toggle-label { white-space: nowrap; }

.sd-toc-toggle-icon {
	position: relative;
	width: 5px;
	height: 5px;
	border-right: 2px solid currentColor;
	border-bottom: 2px solid currentColor;
	transform: rotate(225deg) translateY(-1px);
	transition: transform .18s ease;
}

.sd-toc.is-collapsed .sd-toc-toggle-icon {
	transform: rotate(45deg) translate(-1px, -1px);
}

.sd-toc-nav {
	margin: 0 !important;
	padding: 7px 0 0 !important;
	overflow: hidden;
	max-height: 5000px;
	opacity: 1;
	transition: max-height .22s ease, opacity .18s ease;
}

.sd-toc.is-collapsed .sd-toc-nav {
	max-height: 0;
	opacity: 0;
	padding-top: 0 !important;
}

.sd-toc-nav[hidden] { display: none !important; }

.article-body .sd-toc-list,
.sd-toc .sd-toc-list {
	margin: 0 !important;
	padding: 0 !important;
	list-style: none !important;
}

.article-body .sd-toc-item,
.sd-toc .sd-toc-item {
	display: block !important;
	margin: 0 !important;
	padding: 0 !important;
	list-style: none !important;
}

.article-body .sd-toc-item::before,
.sd-toc .sd-toc-item::before {
	content: none !important;
	display: none !important;
}

.article-body .sd-toc-link,
.sd-toc .sd-toc-link {
	position: relative;
	display: flex !important;
	align-items: center;
	gap: 8px;
	width: 100%;
	box-sizing: border-box;
	margin: 0 0 1px !important;
	padding: 4px 5px !important;
	border: 1px solid transparent;
	border-radius: 8px;
	font-family: var(--theme-font-body, inherit);
	font-size: 13.5px;
	font-weight: 650;
	line-height: 1.22 !important;
	color: var(--theme-text, #111827) !important;
	text-decoration: none !important;
	text-decoration-line: none !important;
	text-decoration-thickness: 0 !important;
	box-shadow: none !important;
	transition: background-color .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}

.article-body .sd-toc-link:hover,
.article-body .sd-toc-link:focus-visible,
.sd-toc .sd-toc-link:hover,
.sd-toc .sd-toc-link:focus-visible {
	color: #2456d9 !important;
	background: rgba(255, 255, 255, .64);
	border-color: rgba(79, 70, 229, .11);
	text-decoration: none !important;
}

.article-body .sd-toc-link:focus-visible,
.sd-toc .sd-toc-link:focus-visible {
	outline: 2px solid rgba(79, 70, 229, .25);
	outline-offset: 1px;
}

.sd-toc-number {
	position: relative;
	flex: 0 0 27px;
	min-width: 27px;
	height: 27px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 2px 4px;
	box-sizing: border-box;
	border-radius: 8px;
	background: linear-gradient(135deg, #2563eb 0%, #4f46e5 55%, #d21b8f 130%);
	color: #fff;
	font-size: 11px;
	font-weight: 800;
	line-height: 1;
	font-variant-numeric: tabular-nums;
	box-shadow: 0 2px 6px rgba(79, 70, 229, .13);
}

.sd-toc-text { min-width: 0; text-decoration: none !important; }

.sd-toc-link-level-2 { padding-left: 5px !important; font-weight: 700; }
.sd-toc-link-level-3 { padding-left: 24px !important; font-size: 13px; font-weight: 550; color: #475569 !important; }
.sd-toc-link-level-4 { padding-left: 42px !important; font-size: 12.5px; font-weight: 550; color: #64748b !important; }
.sd-toc-link-level-5 { padding-left: 60px !important; font-size: 12.5px; font-weight: 550; color: #64748b !important; }
.sd-toc-link-level-6 { padding-left: 78px !important; font-size: 12.5px; font-weight: 550; color: #64748b !important; }

@media (max-width: 768px) {
	.sd-toc {
		margin-bottom: 16px;
		padding: 11px 11px 8px;
		border-radius: 10px;
	}

	.sd-toc-header { gap: 7px; padding-bottom: 7px; }
	.sd-toc-title { font-size: 16px; }
	.sd-toc-title::after { width: 32px; height: 2px; margin-top: 5px; }
	.sd-toc-toggle { padding: 5px 8px; font-size: 10px; }
	.sd-toc-nav { padding-top: 5px !important; }

	.article-body .sd-toc-link,
	.sd-toc .sd-toc-link {
		gap: 7px;
		margin-bottom: 1px !important;
		padding: 3px 4px !important;
		font-size: 12.5px;
	}

	.sd-toc-number {
		flex-basis: 25px;
		min-width: 25px;
		height: 25px;
		border-radius: 7px;
		font-size: 10px;
	}

	.sd-toc-link-level-3 { padding-left: 19px !important; }
	.sd-toc-link-level-4 { padding-left: 34px !important; }
	.sd-toc-link-level-5 { padding-left: 49px !important; }
	.sd-toc-link-level-6 { padding-left: 64px !important; }
}

@media (prefers-reduced-motion: reduce) {
	.sd-toc-nav,
	.sd-toc-toggle,
	.sd-toc-toggle-icon,
	.sd-toc-link { transition: none; }
}