/* ==========================================================================
   restart-fluent · post.css
   阅读进度、文章目录（桌面侧栏 + 移动抽屉）。
   正文增强、分享、代码块样式在 extras.css / code.css。
   ========================================================================== */

/* ---------- 阅读进度 ---------- */
.read-progress {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	z-index: 1200;
	pointer-events: none;
	background: transparent;
}

.read-progress i {
	display: block;
	width: 0;
	height: 100%;
	background: var(--accent);
	transition: width .08s linear;
}

/* ---------- 阅读页布局 ---------- */
.post-wrap {
	display: flex;
	align-items: flex-start;
	gap: 26px;
}

.post-main {
	flex: 1;
	min-width: 0;
}

.post-side {
	width: 230px;
	flex: none;
	position: sticky;
	/* 顶部有 UWP 标题栏（--topnav-h），吸顶时让开它 */
	top: calc(var(--topnav-h) + 12px);
	display: flex;
	flex-direction: column;
	max-height: calc(100vh - var(--topnav-h) - 24px);
}

/* ---------- 文章目录（Win10 Fluent 侧栏磁贴） ----------
   亚克力模糊由 fluent.css 的 blur 名单提供；入场动画在 animations.css；
   Reveal 径向光效与边缘光由 fluent.js cardTargets 绑定。
   视觉对齐 Win10 设置侧栏：左侧滑动主色指示条 + 圆角磁贴悬停 + 层级树线。 */
.toc-box {
	display: flex;
	flex-direction: column;
	min-height: 0;
	max-height: 100%;
	overflow: hidden;
	background: var(--tile-tint);
	border: 1px solid var(--stroke);
	transition: border-color .15s var(--ease);
}

.toc-box:hover {
	border-color: var(--stroke-strong);
}

.toc-box .box-title {
	flex: none;
	margin: 0;
	padding: 14px 16px 12px;
	font-size: 11px;
	font-weight: 600;
	letter-spacing: .08em;
	color: var(--text-dim);
	background: transparent;
	border-bottom: 1px solid var(--stroke);
	border-left: 3px solid var(--accent);
}

.toc-content {
	flex: 1;
	min-height: 0;
	overflow-y: auto;
	overscroll-behavior: contain;
	padding: 10px 12px 14px;
	font-size: 12.5px;
	scrollbar-width: thin;
	scrollbar-color: var(--scrollbar) transparent;
}

.toc-content::-webkit-scrollbar { width: 8px; }
.toc-content::-webkit-scrollbar-track { background: transparent; }

.toc-content::-webkit-scrollbar-thumb {
	background: var(--scrollbar);
	border: 2px solid transparent;
	background-clip: content-box;
}

.toc-content ul,
.toc-content ol {
	list-style: none;
	margin: 0;
	padding-left: 0;
	border-left: 0;
}

/* 嵌套层级：细树线 + 缩进（h3 及更深） */
.toc-content li ul,
.toc-content li ol {
	padding-left: 14px;
	margin-left: 8px;
	border-left: 1px solid var(--stroke);
}

.toc-content li {
	margin: 1px 0;
	line-height: 1.5;
}

/* 链接 = Fluent 导航行：直角磁贴 + 左侧滑动指示条 */
.toc-content a {
	display: block;
	position: relative;
	padding: 7px 10px 7px 12px;
	color: var(--text-mute);
	transition: color .15s var(--ease), background .15s var(--ease);
}

.toc-content a::before {
	content: '';
	position: absolute;
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	width: 3px;
	height: 0;
	background: var(--accent);
	transition: height .18s var(--ease);
}

.toc-content a:hover {
	color: var(--text);
	background: var(--surface);
}

.toc-content a.active {
	color: var(--accent-text);
	background: var(--accent-soft);
	font-weight: 600;
}

.toc-content a.active::before {
	height: 18px;
}

/* 二级及更深：字号略收、缩进由 li ul 负责 */
.toc-content li li a {
	font-size: 12px;
	padding-left: 14px;
}

/* ---------- 移动端目录按钮 ---------- */
.toc-toggle {
	display: none;
	position: fixed;
	left: 20px;
	bottom: 24px;
	z-index: 950;
	width: 44px;
	height: 44px;
	padding: 0;
	place-items: center;
	font-size: 17px;
	color: var(--text-dim);
	background: var(--tile-tint);
	-webkit-backdrop-filter: blur(18px);
	backdrop-filter: blur(18px);
	border: 1px solid var(--stroke-strong);
	cursor: pointer;
}

.toc-toggle:hover {
	color: #fff;
	background: var(--accent);
	border-color: var(--accent);
}

/* ---------- 目录抽屉 ---------- */
.toc-drawer {
	position: fixed;
	inset: 0;
	z-index: 1200;
	visibility: hidden;
	pointer-events: none;
}

.toc-drawer.active {
	visibility: visible;
	pointer-events: auto;
}

.toc-drawer-mask {
	position: absolute;
	inset: 0;
	background: rgba(0, 0, 0, .5);
	opacity: 0;
	transition: opacity .2s var(--ease);
}

.toc-drawer.active .toc-drawer-mask { opacity: 1; }

.toc-drawer-panel {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	display: flex;
	flex-direction: column;
	width: min(300px, 84vw);
	background: var(--panel);
	-webkit-backdrop-filter: blur(var(--acrylic-blur)) saturate(140%);
	backdrop-filter: blur(var(--acrylic-blur)) saturate(140%);
	border-right: 1px solid var(--stroke);
	transform: translateX(-100%);
	transition: transform .24s var(--ease);
}

.toc-drawer.active .toc-drawer-panel { transform: translateX(0); }

.toc-drawer-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex: none;
	padding: 12px 14px;
	font-size: 13px;
	font-weight: 600;
	color: var(--text);
	border-bottom: 1px solid var(--stroke);
}

#toc-drawer-close {
	display: grid;
	place-items: center;
	width: 30px;
	height: 30px;
	padding: 0;
	font-size: 20px;
	line-height: 1;
	color: var(--text-mute);
	background: transparent;
	border: 1px solid transparent;
	cursor: pointer;
}

#toc-drawer-close:hover {
	color: var(--text);
	background: var(--surface-hover);
	border-color: var(--stroke);
}

.toc-drawer-panel .toc-content {
	flex: 1;
	min-height: 0;
	padding: 10px 16px;
	font-size: 14px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1380px) {
	.post-side { display: none; }
	.toc-toggle { display: grid; }
}

@media (max-width: 640px) {
	.toc-toggle {
		left: 12px;
		bottom: 16px;
		width: 40px;
		height: 40px;
	}
}