/* 组件样式：按钮、搜索框、面包屑、内容区等 */
.shortcut-hint {
	position: absolute;
	right: 10px;
	top: 50%;
	transform: translateY(-50%);
	display: flex;
	gap: 2px;
	opacity: 0.7;
	pointer-events: none;
}

.shortcut-hint span {
	background: var(--button-bg);
	color: var(--text-color);
	padding: 2px 4px;
	border-radius: 3px;
	font-size: 12px;
}

#search-input:not(:placeholder-shown) ~ .shortcut-hint {
	opacity: 0;
	transition: opacity var(--duration-base) var(--ease-default);
}

.search-container {
	display: flex;
	align-items: center;
	z-index: 999;
	white-space: nowrap;
	user-select: none;
	height: calc(1rem + 16px + 6px);
	will-change: transform;
	contain: layout;
	outline: none;
	backface-visibility: hidden;
	overflow: visible;

	/* 添加左侧空白补偿，与主页按钮宽度匹配 */
	padding-left: calc(1rem + 15px + 6px + 5px);
}

.search-input-wrapper {
	position: relative;
	display: inline-block;
}

#search-input {
	padding: 6px;
	padding-right: 56px;
	font-size: 1rem;
	border: 2px solid #a4d1c4;
	border-radius: 8px;
	width: 230px;
	max-width: calc(100vw - 120px);
	box-sizing: border-box;
	background: var(--bg-color);
	color: var(--text-color);
	user-select: text;
	font-family: "DingTalk JinBuTi", sans-serif;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	text-rendering: optimizeLegibility;
	font-synthesis: none;
	outline: none;
	transition:
		border-color var(--duration-base) var(--ease-default),
		box-shadow var(--duration-base) var(--ease-default);
}

#search-input::placeholder {
	font-family: "DingTalk JinBuTi", sans-serif;
	color: var(--text-color);
	opacity: 0.8;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	text-rendering: optimizeLegibility;
	font-synthesis: none;
}

/* 搜索框悬停效果 - 仅在PC端生效 */
@media (hover: hover) and (pointer: fine) {
	#search-input:hover {
		border-color: var(--link-color);
		box-shadow:
			0 0 0 1px var(--link-color),
			var(--shadow-sm);
	}
}

/* 非PC端搜索框点击效果 */
@media not all and (hover: hover) and (pointer: fine) {
	#search-input:active {
		border-color: var(--link-color);
		box-shadow:
			0 0 0 1px var(--link-color),
			var(--shadow-sm);
	}
}

/* 搜索框键盘聚焦样式 */
#search-input:focus-visible {
	border-color: var(--link-color);
	box-shadow:
		0 0 0 1px var(--link-color),
		var(--shadow-sm);
}

/* 面包屑导航 */
#breadcrumbs {
	font-weight: bold;
	margin-bottom: 1rem;
	padding: 60px 0 0 0;
	font-size: 1.5rem;
	white-space: normal;
	overflow-x: auto;
	user-select: none;
	opacity: 0;
	animation: slideDown 0.3s ease forwards;
	outline: none;
	scroll-behavior: smooth;
	-webkit-overflow-scrolling: touch;
	transition:
		mask-image 0.3s ease,
		-webkit-mask-image 0.3s ease;
	/* 防止布局偏移 */
	contain: layout style;
}

.breadcrumb-icon {
	margin-right: 4px;
	user-select: none;
	display: inline-block;
}

.breadcrumb-item {
	cursor: pointer;
	color: var(--link-color);
	padding: 8px 8px;
	border-radius: 4px;
	display: inline-block;
	margin: 0 4px 4px 0;
	user-select: none;
	transition:
		background var(--duration-base) var(--ease-default),
		transform var(--duration-base) var(--ease-default),
		box-shadow var(--duration-base) var(--ease-default),
		text-decoration var(--duration-base) var(--ease-default);
	outline: none;
	will-change: transform, background;
	border: none;
	background: transparent;
	font-family: inherit;
	font-size: inherit;
	font-weight: inherit;
}

/* 重置button默认样式 */
button.breadcrumb-item {
	appearance: none;
	line-height: normal;
	margin: 0 4px 4px 0;
	min-height: 24px;
}

/* 面包屑悬停效果 - 仅在PC端生效 */
@media (hover: hover) and (pointer: fine) {
	.breadcrumb-item:hover {
		background: var(--hover-bg);
		box-shadow: var(--shadow-sm);
		transform: scale(1.05);
		text-decoration: underline;
	}
}

.breadcrumb-separator {
	color: var(--text-color);
	margin: 0 4px;
	user-select: none;
}

.breadcrumb-item:last-child {
	color: var(--text-color);
	font-weight: bold;
	cursor: default;
}

.breadcrumb-item:last-child:hover {
	background: transparent;
	text-decoration: none;
}

/* 滚动提示样式 */
#breadcrumbs.scrollable:not(.at-end)::after {
	content: "";
	position: absolute;
	right: 0;
	top: 50%;
	transform: translateY(-50%);
	width: 24px;
	height: 24px;
	background: linear-gradient(to right, transparent, var(--bg-color));
	pointer-events: none;
	opacity: 0.8;
}

#breadcrumbs.scrollable:not(.at-start)::before {
	content: "";
	position: absolute;
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	width: 24px;
	height: 24px;
	background: linear-gradient(to left, transparent, var(--bg-color));
	pointer-events: none;
	opacity: 0.8;
	z-index: 1;
}

.folder-loading,
.folder-error {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: 40px;
	color: var(--text-color);
	opacity: 0.7;
	text-align: center;
	gap: 12px;
}

.folder-loading-text,
.folder-error-text {
	margin: 0;
}

.folder-loading-spinner {
	width: 24px;
	height: 24px;
	border: 2px solid currentColor;
	border-top-color: transparent;
	border-radius: 50%;
	animation: spin 1s linear infinite;
}

/* 内容区 */
#content {
	transition: transform var(--duration-base) var(--ease-in-out-cubic);
}

/* 移动端内容布局 */
#content.mobile-content-layout {
	margin-left: 0;
	width: 100%;
	max-width: 600px;
	position: relative;
	padding-left: 5px;
	/* 增加一点左侧内边距 */
	/* 移除导致元素扩散的transform和left */
}

#content .folder,
#content .bookmark {
	display: flex;
	align-items: center;
	gap: 8px;
	margin: 1.2rem 0;
	padding: 0.25rem 0.5rem;
	opacity: 0;
	animation: fadeInUp 0.3s ease forwards;
	animation-delay: calc(var(--item-index, 0) * 0.05s);
	will-change: transform;
	outline: none;
	box-sizing: border-box;
	/* 防止布局偏移 */
	contain: layout;
}

#content .folder {
	user-select: none;
	-webkit-user-drag: none;
	-webkit-touch-callout: none;
	backface-visibility: hidden;
	transform: translateZ(0);
	transition:
		transform var(--duration-base) var(--ease-default),
		background var(--duration-base) var(--ease-in-out-cubic),
		box-shadow var(--duration-base) var(--ease-default);
	width: fit-content;
	/* 保留最小占位，减少动态渲染/懒加载引起的布局偏移 */
	min-width: 120px;
	/* 移除min-height以与书签保持一致的间距 */
	/* 确保emoji和文字垂直居中对齐 */
	line-height: 1;
}

/* 文件夹悬停效果 - 仅在PC端生效 */
@media (hover: hover) and (pointer: fine) {
	#content .folder:hover {
		transform: translateY(-1px);
		cursor: pointer;
	}

	#content .folder:hover .folder-name {
		color: var(--link-color);
		text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
		box-shadow: var(--shadow-sm);
	}

	#content .bookmark:hover {
		transform: translateY(-1px);
	}

	#content .bookmark a:hover {
		color: var(--link-color);
		box-shadow: var(--shadow-sm);
	}

	.github-link:hover {
		transform: scale(1.1);
		color: var(--link-color);
	}
}

#content .folder .folder-name {
	font-size: 1rem;
	padding: 0.25rem 0.5rem;
	cursor: pointer;
	transition: all var(--duration-base) var(--ease-default);
	border-radius: 4px;
	/* 确保文字垂直居中 */
	display: flex;
	align-items: center;
	line-height: 1;
}

#content .bookmark .bookmark-icon {
	flex-shrink: 0;
	display: inline-block;
	user-select: none;
	transition: transform 0.2s ease;
	will-change: transform;
	width: 16px;
	height: 16px;
	font-size: 16px;
	line-height: 16px;
	min-width: 16px;
	min-height: 16px;
	font-feature-settings: "zero" 1;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	overflow: hidden;
	position: relative;
	padding: 0;
	margin: 0;
}

.bookmark-icon-emoji {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 100%;
	line-height: 1;
}

.bookmark-icon .bookmark-icon-img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	transition: opacity 0.3s ease;
	/* 保留占位并避免在加载完成时通过移动 DOM 引起位移 */
	display: block;
	min-width: 16px;
	min-height: 16px;
	box-sizing: border-box;
	opacity: 0;
	visibility: hidden;
}

.bookmark-icon.bookmark-icon--img-loaded .bookmark-icon-emoji {
	display: none;
}

.bookmark-icon.bookmark-icon--img-loaded .bookmark-icon-img {
	opacity: 1;
	visibility: visible;
}

#content .bookmark a {
	color: var(--text-color);
	text-decoration: none;
	display: inline-block;
	padding: 0.25rem 0.5rem;
	max-width: calc(100% - 16px - 8px);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	user-select: text;
	font-size: 1rem;
	transition:
		color 0.15s ease,
		box-shadow 0.15s ease;
	border-radius: 4px;
}

/* GitHub链接按钮样式 */
.github-link {
	position: fixed;
	top: 20px;
	right: 20px;
	z-index: 999;
	color: var(--text-color);
	display: flex;
	align-items: center;
	transition:
		transform 0.2s,
		color 0.2s;
}

/* 主页消息字体与颜色 */
.home-message .chinese-text {
	font-family: "DingTalk JinBuTi", sans-serif;
	color: var(--text-color);
}

.home-message .english-text {
	font-family: "DingTalk JinBuTi", sans-serif;
	color: var(--link-color);
}

.home-message .chinese-text {
	font-size: 3rem;
}

.home-message .english-text {
	font-size: 2rem;
}

/* 主页消息基础样式 */
.home-message {
	font-weight: bold;
	text-align: center;
	user-select: none;
	opacity: 0;
	perspective: 1000px;
	transform-style: preserve-3d;
	will-change: opacity, transform;
	content-visibility: auto;
	outline: none;
}

.home-char {
	display: inline-block;
	position: relative;
}

.mobile-home-message {
	width: 90%;
	max-width: 400px;
}

.mobile-home-message .chinese-text {
	font-size: clamp(1.5rem, 8vw, 2rem);
}

.mobile-home-message .english-text {
	font-size: clamp(1rem, 6vw, 1.5rem);
}

/* 内容区文件夹聚焦样式 */
#content .folder:focus-visible {
	outline: 2px solid var(--link-color);
	outline-offset: 2px;
	box-shadow: 0 0 0 4px rgba(43, 195, 206, 0.2);
	border-radius: 4px;
}

/* 面包屑导航聚焦样式 */
button.breadcrumb-item:focus-visible {
	outline: 2px solid var(--link-color);
	outline-offset: 2px;
	box-shadow: 0 0 0 4px rgba(43, 195, 206, 0.2);
	border-radius: 4px;
}

/* 加载指示器样式 */
.loading-indicator {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 1rem;
	/* 保留占位，避免首次渲染时高度不足导致 CLS */
	min-height: 80px;
}

.loading-indicator.search-loading {
	text-align: center;
	margin-top: 50px;
	color: var(--text-color);
}

.loading-spinner {
	width: 40px;
	height: 40px;
	border: 4px solid var(--hover-bg);
	border-top: 4px solid var(--link-color);
	border-radius: 50%;
	animation: spin 1s linear infinite;
}

/* 居中消息基类 - 使用统一居中系统 */
.centered-message {
	z-index: 10;
	text-align: center;
	color: var(--text-color);
}

.error-message {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 1rem;
	padding: 2rem;
}

.loading-message .message-title {
	font-size: 2rem;
}

.error-message .message-title {
	font-size: 2rem;
}

.error-message .message-subtitle {
	font-size: 1.2rem;
}

.error-message .message-detail {
	font-size: 1rem;
}

.search-results-fade {
	transition: opacity 0.3s ease;
}

.search-results-fade-dim {
	opacity: 0.8;
}

.search-results-fade-full {
	opacity: 1;
}

.no-results {
	width: 90%;
	max-width: 400px;
	font-size: 1.1rem;
	opacity: 0.8;
	font-weight: bold;
	top: 45%;
}

/* 搜索结果相关样式 */
.results-container {
	position: relative;
	min-height: calc(100vh - 50px);
	padding-bottom: 2rem;
	/* 底部留些空间 */
}

/* 移动端减少底部间距 */
@media screen and (max-width: 479px) {
	.results-container {
		padding-bottom: 0.5rem;
		/* 移动端大幅减少底部间距 */
	}
}

/* 搜索结果项目样式 */
.search-result-item {
	opacity: 0;
	animation: fadeInUp 0.15s ease-out forwards;
	margin-bottom: 0.5rem;
}

.search-result-item:focus-visible {
	outline: 2px solid var(--link-color);
	outline-offset: 2px;
	box-shadow: 0 0 0 4px rgba(43, 195, 206, 0.2);
	border-radius: 4px;
}