/* assets/css/app.css - 优化整理版 */
/* ===== 基础重置和排版 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 14px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: rgba(0, 0, 0, 0.4);
  color: var(--text-primary);
  line-height: 1.4;
  overflow: hidden;
  min-height: 100vh;
  font-weight: var(--font-weight-normal);
}

/* ===== 壁纸系统 ===== */
.wallpaper-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform-origin: center center;
  backdrop-filter: blur(var(--wallpaper-blur, 0px));
}

/* 壁纸类型基础样式 */
.wallpaper-image-layer,
.wallpaper-color-layer,
.wallpaper-gradient-layer {
  background: var(--wallpaper-background);
  filter: blur(var(--wallpaper-blur, 0px));
}

.wallpaper-image-layer {
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.wallpaper-video-layer {
  filter: blur(var(--wallpaper-blur, 0px));
}

.wallpaper-video-layer .wallpaper-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: opacity 0.5s ease-in-out;
}

/* 壁纸遮罩层 */
.wallpaper-image-layer::before,
.wallpaper-color-layer::before,
.wallpaper-gradient-layer::before,
.wallpaper-video-layer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, var(--wallpaper-mask-opacity, 0.4));
  z-index: 1;
}

/* 壁纸状态 */
.wallpaper-changing {
  animation: wallpaper-scale-switch 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.wallpaper-loading-state::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
  animation: wallpaper-loading-shine 2s infinite;
  z-index: 2;
}

.wallpaper-video-loading .wallpaper-video { opacity: 0; }
.wallpaper-video-ready .wallpaper-video { opacity: 1; }

/* 壁纸预加载层 */
.wallpaper-next-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  opacity: 0;
  transform: scale(1.1);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.wallpaper-next-layer.active {
  opacity: 1;
  transform: scale(1);
  z-index: -1;
}

.wallpaper-current-layer.fading-out {
  opacity: 0;
  transform: scale(1.1);
  z-index: -2;
}

/* 壁纸动画 */
@keyframes wallpaper-scale-switch {
  0% { transform: scale(1); opacity: 1; }
  30% { transform: scale(1.08); opacity: 0.9; }
  50% { transform: scale(1.05); opacity: 0.7; }
  70% { transform: scale(1.02); opacity: 0.5; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes wallpaper-smooth-switch {
  0% { transform: scale(1); filter: brightness(1); }
  25% { transform: scale(1.03); filter: brightness(1.1); }
  50% { transform: scale(1.06); filter: brightness(1.2); }
  75% { transform: scale(1.03); filter: brightness(1.1); }
  100% { transform: scale(1); filter: brightness(1); }
}

@keyframes wallpaper-loading-shine {
  0% { transform: translateX(-100%) skewX(-15deg); }
  100% { transform: translateX(200%) skewX(-15deg); }
}

/* ===== 主应用布局 ===== */
.app {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: var(--spacing-md);
  transition: var(--transition-medium);
}

/* ===== 头部区域 ===== */
.header {
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text-primary);
  min-height: var(--header-height);
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-medium);
}

.app-date-box {
  text-align: center;
  min-width: 300px;
  transition: all var(--transition-medium);
}

/* 时间显示 */
.app-time {
  font-size: var(--header-time-font-size, 70px);
  font-weight: var(--header-font-weight, normal);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
  font-variant-numeric: tabular-nums;
  letter-spacing: -2px;
  font-family: var(--header-font-family, 'HarmonyOS_Sans', 'Inter', system-ui, sans-serif);
  text-shadow: 0 2px 6px rgb(0 0 0 / 16%);
  color: var(--header-text-color, var(--theme-text-on-primary));
  opacity: var(--header-text-opacity, 1);
  transition: all var(--transition-medium);
}

.app-time .colon {
  display: inline-block;
  animation: blink 2s infinite;
  color: var(--header-text-color, var(--theme-text-on-primary));
  opacity: var(--header-text-opacity, 1);
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.3; }
}

/* 日期显示 */
.app-date {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 14px;
  color: var(--header-text-color, var(--theme-text-on-primary));
  font-weight: var(--header-font-weight, var(--font-weight-medium));
  text-shadow: 0 2px 4px rgb(0 0 0 / 16%);
  opacity: var(--header-text-opacity, 1);
  font-family: var(--header-font-family, 'Inter', system-ui, sans-serif);
  transition: all var(--transition-medium);
}

.date-separator {
  margin: 0 var(--spacing-xs);
}

/* Logo布局 */
.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
}

.header-logo {
  object-fit: contain;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-medium);
  width: var(--logo-size, 80px);
  height: var(--logo-size, 80px);
}

.logo-placeholder {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--theme-glass-bg);
  border: 2px dashed var(--theme-glass-border);
  border-radius: var(--border-radius-md);
  color: var(--theme-glass-border);
  font-size: 24px;
  transition: all var(--transition-medium);
  width: var(--logo-size, 80px);
  height: var(--logo-size, 80px);
}

/* 文字布局 */
.text-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 100%;
  text-align: center;
}

.custom-main-text {
  font-size: var(--header-time-font-size, 70px);
  font-weight: var(--header-font-weight, normal);
  line-height: 1.1;
  margin-bottom: var(--spacing-sm);
  font-variant-numeric: tabular-nums;
  letter-spacing: -2px;
  font-family: var(--header-font-family, 'HarmonyOS_Sans', 'Inter', system-ui, sans-serif);
  text-shadow: 0 2px 6px rgb(0 0 0 / 16%);
  color: var(--header-text-color, var(--theme-text-on-primary));
  opacity: var(--header-text-opacity, 1);
  transition: all var(--transition-medium);
  text-align: center;
  white-space: pre-wrap;
  word-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
  width: 100%;
}

.custom-sub-text {
  font-size: 1.2rem;
  color: var(--header-text-color, var(--theme-text-on-primary));
  font-weight: var(--header-font-weight, var(--font-weight-medium));
  text-shadow: 0 2px 4px rgb(0 0 0 / 16%);
  opacity: var(--header-text-opacity, 1);
  font-family: var(--header-font-family, 'Inter', system-ui, sans-serif);
  transition: all var(--transition-medium);
  text-align: center;
  line-height: 1.4;
  white-space: pre-wrap;
  word-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
  width: 100%;
}

/* 自定义HTML布局 */
.custom-html-container {
  width: 100%;
  text-align: center;
}

.custom-html-error,
.custom-html-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xl);
  opacity: 0.7;
}

.custom-html-error i,
.custom-html-placeholder i {
  font-size: 32px;
  margin-bottom: var(--spacing-sm);
}

.custom-html-error small,
.custom-html-placeholder small {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

.header-placeholder {
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
}

/* ===== 侧边栏系统 ===== */
.sidebar {
  position: fixed;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  width: var(--sidebar-compact-width);
  background: var(--sidebar-bg);
  backdrop-filter: var(--glass-blur-sm);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-sm) var(--spacing-xs);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  z-index: 1000;
  min-height: 240px;
  max-height: 70vh;
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-md);
  overflow: visible;
  transform-origin: left center;
  backface-visibility: hidden;
  perspective: 1000px;
  will-change: transform;
}

/* 侧边栏变体 */
.sidebar.full-height {
  top: 0;
  bottom: 0;
  left: 0;
  transform: none;
  justify-content: center;
  align-items: center;
  min-height: auto;
  height: 100vh;
  max-height: none;
  margin: 0;
  border-radius: 0;
  border: 0;
  box-shadow: var(--shadow-lg);
}

.sidebar.right-sidebar {
  left: auto;
  right: 0;
  transform-origin: right center;
}

.sidebar.compact {
  width: var(--sidebar-compact-width);
  padding: var(--spacing-sm) var(--spacing-xs);
  transition: all var(--transition-medium);
}

.sidebar.hidden {
  display: none !important;
}

/* 自动隐藏状态 */
.sidebar.auto-hide {
  opacity: 0;
  visibility: hidden;
  transform: translateX(-16px) translateY(-50%);
  transition: all var(--transition-slow);
}

.sidebar.auto-hide:hover,
.sidebar.auto-hide:focus-within {
  opacity: 1;
  visibility: visible;
  transform: translateX(0) translateY(-50%);
}

.sidebar.right-sidebar.auto-hide {
  transform: translateX(16px) translateY(-50%);
}

.sidebar.right-sidebar.auto-hide:hover {
  transform: translateX(0) translateY(-50%);
}

/* 侧边栏内容结构 */
.sidebar-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: var(--spacing-xs);
  overflow: hidden;
}

.sidebar-user-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) 0;
  flex-shrink: 0;
}

.sidebar-pages-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  overflow: hidden;
}

.sidebar-pages-groups {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  overflow-y: auto;
  overflow-x: hidden;
  max-height: calc(100% - 80px);
}

.sidebar-controls-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) 0;
  flex-shrink: 0;
}

/* 通长布局特殊样式 */
.sidebar.full-height .sidebar-content {
  height: 100%;
  max-height: 80vh;
  justify-content: space-between;
  gap: 0;
}

.sidebar.full-height .sidebar-user-section {
  padding-top: var(--spacing-lg);
}

.sidebar.full-height .sidebar-pages-section {
  justify-content: center;
  flex: 1;
}

.sidebar.full-height .sidebar-pages-groups {
  justify-content: flex-start;
  flex: 1;
  max-height: none;
  gap: 0;
}

.sidebar.full-height .sidebar-controls-section {
  padding-bottom: var(--spacing-lg);
}

/* 用户区域 */
.sidebar-user {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 8px;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
  background: transparent;
  border: none;
  color: var(--sidebar-text);
  text-decoration: none;
}

.sidebar-user:hover {
  background: var(--sidebar-group-hover-bg);
  color: var(--sidebar-text);
  transform: scale(1.05);
}

.sidebar-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: var(--gradient-primary);
  color: white;
}

.sidebar-username {
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  line-height: 1.2;
}

/* 分组样式 */
.sidebar-group {
  width: calc(100% - 2px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--spacing-sm) var(--spacing-xs);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  background: var(--sidebar-group-bg);
  border: none;
  color: var(--sidebar-text);
  text-decoration: none;
  transform-origin: left center;
  backface-visibility: hidden;
  perspective: 1000px;
  will-change: transform;
}

.sidebar-group:hover {
  background: var(--sidebar-group-hover-bg);
  color: var(--sidebar-text);
  transform: translateY(-1px) scale(1.02);
}

.sidebar-group.active {
  background: var(--sidebar-group-active-bg);
  color: var(--sidebar-text);
  box-shadow: var(--shadow-sm);
  transform: scale(1.05);
}

.sidebar-group.drop-zone.drag-over {
  background: var(--color-primary);
  color: var(--sidebar-text);
  transform: scale(1.02);
}

.sidebar.full-height .sidebar-group {
  border-radius: 0;
  gap: 0;
}

.sidebar.full-height .sidebar-group:hover {
  background: var(--sidebar-group-hover-bg);
}

.sidebar.full-height .sidebar-group:active {
  background: var(--sidebar-group-active-bg);
}

/* 侧边栏图标和名称 */
.sidebar-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: var(--transition-fast);
  color: inherit;
}

.sidebar-group:hover .sidebar-icon {
  transform: scale(1.05);
}

.sidebar-group.active .sidebar-icon {
  transform: scale(1.1);
}

.sidebar-name {
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  line-height: 1.2;
  color: inherit;
}

/* 侧边栏分割线 */
.sidebar-divider {
  height: 1px;
  background: var(--sidebar-divider);
  margin: var(--spacing-xs) 0;
  width: 100%;
}

/* 控制按钮 */
.sidebar-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding-top: var(--spacing-xs);
  width: 100%;
}

.sidebar-control-btn {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--spacing-sm) var(--spacing-xs);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
  background: transparent;
  border: none;
  color: var(--sidebar-text);
  text-decoration: none;
}

.sidebar-control-btn:hover {
  background: var(--sidebar-group-hover-bg);
  color: var(--sidebar-text);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.sidebar-control-btn:active {
  background: var(--sidebar-group-active-bg);
  color: var(--sidebar-text);
  box-shadow: var(--shadow-sm);
  transform: translateY(0);
}

/* 添加分页按钮 */
#addPageBtn {
  margin-top: auto;
  flex-shrink: 0;
}

.sidebar.full-height #addPageBtn {
  margin-top: var(--spacing-lg);
}

.sidebar.full-height .sidebar-controls {
  margin-top: auto;
  padding-bottom: var(--spacing-lg);
  gap: var(--spacing-md);
}

/* ===== 搜索系统 ===== */
.search-section {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  padding: 0 var(--spacing-md);
}

.search-container {
  position: relative;
  width: 100%;
  max-width: 580px;
  min-width: 400px;
}

/* 搜索框 */
.search-box {
  height: var(--search-height, 55px);
  border-radius: var(--search-radius, 12px);
  opacity: var(--search-opacity, 0.95);
  display: flex;
  align-items: center;
  background: var(--search-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--theme-glass-border);
  padding: var(--spacing-sm);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-medium);
  position: relative;
  z-index: 100;
}

.search-box:focus-within {
  border-color: var(--color-primary);
  background: var(--search-focus-bg);
  box-shadow: 
    0 12px 40px var(--primary-alpha-20),
    0 4px 12px var(--primary-alpha-10);
  transform: translateY(-2px);
}

/* 搜索引擎按钮 */
.search-engine-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--spacing-sm);
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--transition-medium);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  min-width: 60px;
  justify-content: space-between;
  margin-right: var(--spacing-sm);
  background: transparent;
}

.search-engine-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.engine-icon-container {
  margin: 0;
  padding: 0;
  width: 24px;
  height: 24px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: var(--engine-icon);
}

.engine-icon-container i {
  font-size: 20px;
}

.search-engine-btn i:last-child {
  font-size: 14px;
  opacity: 1;
}

/* 搜索输入 */
.search-input-wrapper {
  flex: 1;
  position: relative;
}

.search-input {
  width: 100%;
  padding: var(--spacing-md);
  background: transparent;
  border: none;
  color: var(--input-text);
  font-size: var(--font-size-lg);
  outline: none;
  font-weight: var(--font-weight-medium);
  height: 100%;
}

.search-input::placeholder {
  color: var(--input-placeholder);
  font-weight: var(--font-weight-normal);
}

/* 搜索按钮 */
.search-btn {
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--border-radius-lg);
  color: var(--text-on-primary);
  cursor: pointer;
  transition: all var(--transition-medium);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  min-width: 60px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
}

.search-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.search-btn:active {
  transform: translateY(0);
}

/* ===== 搜索浮层系统 ===== */
.search-overlay {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  left: 0;
  right: 0;
  background: var(--search-overlay-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--search-overlay-border);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.95);
  transition: all var(--transition-medium);
  overflow: hidden;
  width: 100%;
  transform-origin: top center;
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.search-overlay .overlay-content {
  width: 100%;
  box-sizing: border-box;
}

.overlay-title {
  padding: var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--search-overlay-title);
  border-bottom: 1px solid var(--theme-border-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--theme-glass-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.overlay-title i {
  font-size: 14px;
  color: var(--color-primary);
}

.overlay-content {
  max-height: 280px;
  overflow-y: auto;
  padding: var(--spacing-md);
}

/* 搜索引擎浮层 */
.search-engines .overlay-content {
  padding: var(--spacing-md);
  max-height: 200px;
}

.engine-options {
  display: grid;
  grid-template-columns: repeat(auto-fill, 80px);
  gap: var(--spacing-md);
  width: 100%;
  justify-content: start;
}

.engine-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background: var(--engine-option-bg);
  border: 1px solid var(--engine-option-border);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-medium);
  text-align: center;
  width: 80px;
  height: 80px;
  position: relative;
  color: var(--theme-text-primary);
}

.engine-option::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 24px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  background-image: var(--engine-icon);
}

.engine-option:hover {
  border-color: var(--engine-option-hover-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.engine-option.active {
  border-color: var(--engine-option-active-border);
  background: var(--engine-option-active-bg);
  box-shadow: 0 4px 12px var(--primary-alpha-15);
}

.engine-option span {
  font-weight: var(--font-weight-semibold);
  color: var(--theme-text-primary);
  font-size: var(--font-size-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
  margin-top: 24px;
}

.engine-option.active span {
  color: var(--color-primary);
}

/* 搜索历史浮层 */
.search-history .overlay-content {
  padding: var(--spacing-md);
  max-height: 250px;
  min-height: 150px;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-lg);
  border-bottom: 1px solid var(--theme-border-primary);
  background: var(--theme-glass-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.history-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--theme-text-primary);
}

.history-clear-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: transparent;
  border: 1px solid var(--theme-border-primary);
  border-radius: var(--border-radius-md);
  color: var(--theme-text-tertiary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.history-clear-btn:hover {
  background: var(--history-delete-hover-bg);
  border-color: var(--history-delete-hover-border);
  color: var(--history-delete-hover-color);
}

.history-clear-btn i {
  font-size: 12px;
}

.history-items {
  padding: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-start;
}

.history-item {
  background: var(--history-item-bg);
  border: 1px solid var(--history-item-border);
  border-radius: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-lg);
  cursor: pointer;
  transition: all var(--transition-medium);
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  box-shadow: var(--shadow-xs);
  font-size: 0.8rem;
  max-width: 200px;
  min-width: 70px;
  width: auto;
  flex-shrink: 0;
  color: var(--theme-text-primary);
}

.history-item:hover {
  background: var(--history-item-hover-bg);
  border-color: var(--history-item-hover-border);
  box-shadow: var(--shadow-sm);
}

.history-item i {
  font-size: 12px;
  color: var(--theme-text-tertiary);
  width: 16px;
  flex-shrink: 0;
}

.history-item span {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.history-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
  min-width: 0;
}

.history-icon {
  font-size: 12px;
  color: var(--theme-text-tertiary);
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

.history-text {
  color: var(--theme-text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.history-delete-btn {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--history-delete-bg);
  border: 1px solid var(--history-delete-bg);
  color: var(--theme-text-tertiary);
  cursor: pointer;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  transition: var(--transition);
  opacity: 0;
  box-shadow: var(--shadow-sm);
  z-index: 2;
}

.history-item:hover .history-delete-btn {
  color: var(--text-on-primary);
  opacity: 1;
}

.history-delete-btn:hover {
  background: var(--history-delete-hover-bg);
  border-color: var(--history-delete-hover-border);
  color: var(--history-delete-hover-color);
}

.history-delete-btn i {
  font-size: 12px;
}

/* 搜索建议浮层 */
.search-suggestions .overlay-content {
  padding: 0;
}

.suggestion-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.suggestion-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--suggestion-item-bg);
  border: none;
  border-bottom: 1px solid var(--suggestion-item-border);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--theme-text-primary);
  min-height: 50px;
}

.suggestion-item:last-child {
  border-bottom: none;
}

.suggestion-item:hover {
  background: var(--suggestion-item-hover-bg);
  border-bottom-color: var(--suggestion-item-hover-border);
  transform: translateX(4px);
}

.suggestion-item i {
  font-size: 14px;
  color: var(--theme-text-tertiary);
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

.suggestion-item span {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  flex: 1;
}

/* 空状态样式 */
.search-history .empty-state,
.search-suggestions .empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  color: var(--empty-state-color);
  text-align: center;
  gap: var(--spacing-md);
}

.search-history .empty-state i,
.search-suggestions .empty-state i {
  font-size: 32px;
  opacity: 0.5;
}

.search-history .empty-state h3,
.search-suggestions .empty-state h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--theme-text-primary);
  margin: 0;
}

.search-history .empty-state p,
.search-suggestions .empty-state p {
  font-size: var(--font-size-sm);
  max-width: 200px;
  line-height: 1.4;
  margin: 0;
  color: var(--theme-text-secondary);
}

/* ===== 页面容器和网格系统 ===== */
.pages-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  height: calc(100vh - var(--header-height) - var(--search-height) - var(--footer-height));
  min-height: 300px;
  max-height: 500px;
  perspective: 1200px;
  isolation: isolate;
  min-width: 100%;
  transform: translateZ(0);
}

/* 页面基础样式 */
.page {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  padding: var(--spacing-md) var(--spacing-md) 60px;
  animation-fill-mode: both;
  backface-visibility: hidden;
  transform-style: preserve-3d;
  will-change: transform, opacity;
  transform: translateZ(0);
  z-index: 1;
  display: flex !important;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
  overflow-x: hidden;
}

/* 活动页面状态 */
.page.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 2;
  transform: translateY(0) scale(1);
  display: flex !important;
}

/* 隐藏页面状态 */
.page.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1;
  display: none !important;
}

/* 动画中的页面 */
.page.animating {
  opacity: 1;
  visibility: visible;
  pointer-events: none;
  z-index: 3;
  display: flex !important;
}

/* 网格容器布局 */
.grid-container {
  width: 100%;
  max-width: var(--grid-max-width);
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 150px;
  height: fit-content;
  min-height: 300px;
  transform: translateZ(0);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: var(--site-spacing);
  justify-items: center;
  align-items: start;
  width: 100%;
  max-width: var(--grid-max-width);
  padding: calc(var(--site-spacing) / 2);
  min-height: 200px;
  transform: translateZ(0);
}

/* 当站点数量少时居中显示 */
.grid:not(:has(.site-item:nth-child(6))) {
  justify-content: center;
  grid-template-columns: repeat(auto-fit, 80px);
}

/* 网格布局优化 */
.grid {
  grid-auto-rows: min-content;
}

/* 当站点数量很少时的居中优化 */
.grid:has(.site-item:nth-child(1):not(:nth-child(2))) {
  justify-content: center;
  grid-template-columns: repeat(auto-fit, minmax(calc(var(--site-icon-size) + 16px), max-content));
}

/* ===== 站点项目 ===== */
.site-item, .folder-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-lg);
  cursor: grab;
  transition: all var(--transition-medium);
  user-select: none;
  background: var(--site-item-bg);
  border: none;
  width: calc(var(--site-icon-size) + 16px);
  min-height: calc(var(--site-icon-size) + 32px);
  position: relative;
  margin: 0;
  transform-origin: center;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.site-item:hover, .folder-item:hover {
  background: var(--site-item-hover-bg);
  transform: translateY(-2px) scale(1.03);
  box-shadow: var(--shadow-lg);
  z-index: 10;
}

.site-item:active, .folder-item:active {
  cursor: grabbing;
  transform: translateY(0) scale(0.98);
  transition: transform 0.1s ease;
}

/* 站点图标 */
.site-icon, .folder-icon {
  width: var(--site-icon-size);
  height: var(--site-icon-size);
  border-radius: var(--site-icon-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(var(--site-icon-size) * 0.3);
  color: white;
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-md);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: var(--site-icon-opacity);
}

.site-item:hover .site-icon, .folder-item:hover .folder-icon {
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
}

.site-title {
  font-size: var(--site-name-size);
  font-weight: 500;
  text-align: center;
  line-height: 1.2;
  max-width: calc(var(--site-icon-size) + 8px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--site-name-color);
}


/* 文件夹样式 */
.folder-icon {
  background: var(--theme-glass-bg);
  position: relative;
  overflow: hidden;
}

.folder-preview {
  position: absolute;
  top: 3px;
  left: 3px;
  right: 3px;
  bottom: 3px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 1px;
}

.folder-preview-item {
  background: var(--theme-glass-border);
  border-radius: var(--border-radius-sm);
}

/* 添加快捷方式按钮 */
.add-site-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  cursor: pointer;
  border-radius: var(--border-radius-lg);
  background: var(--add-site-btn-bg);
  border: 1px dashed var(--add-site-btn-border);
  color: var(--color-primary-light);
  transition: all var(--transition-medium);
  width: calc(var(--site-icon-size) + 16px);
  min-height: calc(var(--site-icon-size) + 32px);
  transform-origin: center;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.add-site-btn:hover {
  background: var(--add-site-btn-hover-bg);
  border-color: var(--add-site-btn-hover-border);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.add-site-icon {
  width: var(--site-icon-size);
  height: var(--site-icon-size);
  border-radius: var(--site-icon-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(var(--site-icon-size) * 0.3);
  background: var(--add-site-icon-bg);
  transition: all var(--transition-medium);
}

.add-site-btn:hover .add-site-icon {
  transform: scale(1.03);
  background: var(--add-site-icon-hover-bg);
}

/* ===== 拖拽状态样式 ===== */
/* 拖拽样式优化 */
.site-item.dragging {
  opacity: 0.8;
  transform: rotate(5deg) scale(1.03);
  z-index: 1000;
  transition: none;
}

.sortable-ghost {
  opacity: 0.3;
  transform: scale(0.9) translateZ(0);
  transition: all 0.2s ease;
}

.sortable-chosen {
  transform: rotate(2deg) scale(1.02) translateZ(0);
  z-index: 1000;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

.sortable-drag {
  opacity: 0.8;
  transform: rotate(3deg) scale(1.03) translateZ(0);
  z-index: 10000;
}

.site-item.drag-over {
  background: var(--site-item-drag-over-bg, rgba(var(--color-primary-rgb), 0.1));
  border: 2px dashed var(--site-item-drag-over-border, var(--color-primary));
  transform: scale(1.03) translateZ(0);
  transition: transform 0.15s ease, background 0.15s ease;
}

.site-item.drag-adjacent {
  transform: translateX(8px) translateZ(0);
  transition: transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.site-item.drag-adjacent.left {
  transform: translateX(-8px) translateZ(0);
}

/* ===== 页面指示器 ===== */
.page-indicator {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateZ(0);
  display: var(--page-indicator-display, flex);
  gap: var(--spacing-sm);
  z-index: 1000;
  background: var(--page-indicator-bg, rgba(255, 255, 255, 0.1));
  backdrop-filter: var(--glass-blur-sm, blur(10px));
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 20px;
  border: 1px solid var(--page-indicator-border, rgba(255, 255, 255, 0.2));
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-md);
}

.page-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--border-radius-round, 50%);
  background: var(--page-dot-bg, rgba(255, 255, 255, 0.4));
  transition: all var(--transition-fast);
  cursor: pointer;
  transform-origin: center;
  transform: translateZ(0);
  position: relative;
  overflow: hidden;
  animation: dotPulse 2s infinite;
}

.page-dot::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.6s ease;
}

.page-dot.active {
  background: var(--page-dot-active-bg, var(--color-primary));
  transform: scale(1.3);
  box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb), 0.3);
  animation: activeDotPulse 1.5s infinite;
}

.page-dot.active::before {
  left: 100%;
}

.page-dot:hover {
  background: var(--page-dot-hover-bg, rgba(255, 255, 255, 0.6));
  transform: scale(1.1);
}

.page-dot:hover::before {
  left: 100%;
  transition: left 0.3s ease;
}

@keyframes dotPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

@keyframes activeDotPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.9;
  }
}

/* ===== 底部信息区域 ===== */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: var(--footer-height);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: var(--spacing-sm);
}

.copyright {
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  text-align: center;
  line-height: 1.3;
}

.copyright a {
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
  border-bottom: 1px solid transparent;
  padding: 2px 4px;
  border-radius: var(--border-radius-sm);
}

.copyright a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: var(--primary-alpha-10);
}

/* ===== 风车按钮 ===== */
.windmill {
  position: fixed;
  right: 24px;
  bottom: 0px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1000;
  cursor: pointer;
  transition: all var(--transition-medium);
}

.sidebar-right ~ .windmill {
  right: calc(24px + 50px);
}

.windmill:hover {
  transform: translateY(-4px);
}

.windmill.hover {
  transform: translateY(-4px);
}

.windmill.loading {
  cursor: not-allowed;
  opacity: 0.7;
}

.windmill img {
  z-index: 1;
  cursor: pointer;
  width: 40px;
  height: 40px;
  transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.windmill:hover img {
  transform: rotate(180deg);
}

.windmill.loading img {
  animation: windmill-rotate 1.5s linear infinite;
}

/* 连杆样式 */
.windmill-rod {
  display: block;
  margin-top: -8px;
  width: 3px;
  height: 40px;
  background: linear-gradient(to top, 
    rgba(254, 254, 254, 0.8) 0%, 
    rgba(254, 254, 254, 0.6) 50%, 
    rgba(254, 254, 254, 0.3) 100%);
  border-radius: 2px;
  transition: all 0.3s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.windmill:hover .windmill-rod {
  height: 44px;
  background: linear-gradient(to top, 
    rgba(254, 254, 254, 0.9) 0%, 
    rgba(254, 254, 254, 0.7) 50%, 
    rgba(254, 254, 254, 0.4) 100%);
}

.windmill.loading .windmill-rod {
  background: linear-gradient(to top, 
    rgba(100, 200, 255, 0.8) 0%, 
    rgba(100, 200, 255, 0.6) 50%, 
    rgba(100, 200, 255, 0.3) 100%);
}

/* 加载状态 */
.windmill-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: none;
}

.windmill.loading .windmill-loading {
  display: block;
}

.loading-dots {
  display: flex;
  gap: 3px;
}

.loading-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(100, 200, 255, 0.8);
  animation: windmill-dot-bounce 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

.loading-dots span:nth-child(3) {
  animation-delay: 0s;
}

/* 风车动画 */
@keyframes windmill-rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes windmill-dot-bounce {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes windmill-pulse {
  0% {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
  }
  50% {
    filter: drop-shadow(0 2px 8px rgba(100, 200, 255, 0.5));
  }
  100% {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
  }
}

.windmill.loading img {
  animation: 
    windmill-rotate 1.5s linear infinite,
    windmill-pulse 2s ease-in-out infinite;
}

/* 工具提示 */
.windmill::after {
  content: '切换壁纸';
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(0, 0, 0, 0.7);
  padding: 6px 12px;
  border-radius: 6px;
  backdrop-filter: blur(10px);
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.windmill:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

/* ===== 浮动设置按钮 ===== */
.floating-settings-btn {
  position: fixed;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  width: 48px;
  height: 48px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-sm);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-medium);
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.floating-settings-btn.visible {
  display: flex;
}

.floating-settings-btn:hover {
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===== 状态样式 ===== */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl);
  color: var(--text-secondary);
  gap: var(--spacing-md);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading-state i {
  font-size: 24px;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl);
  color: var(--empty-state-color);
  text-align: center;
  gap: var(--spacing-md);
}

.empty-state i {
  font-size: 48px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.empty-state p {
  font-size: var(--font-size-base);
  max-width: 300px;
  line-height: 1.4;
}

.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl);
  color: var(--color-error);
  text-align: center;
  gap: var(--spacing-md);
}

.error-state i {
  font-size: 48px;
}

.error-state h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
}

.error-state p {
  font-size: var(--font-size-base);
  max-width: 300px;
  line-height: 1.4;
  color: var(--text-secondary);
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
  transition: all var(--transition-fast);
}

::-webkit-scrollbar-track {
  background: var(--theme-border-secondary);
  border-radius: 3px;
  transition: all var(--transition-fast);
}

::-webkit-scrollbar-thumb {
  background: var(--theme-border-primary);
  border-radius: 3px;
  transition: all var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-light);
  transform: scale(1.1);
}

/* 选择文本样式 */
::selection {
  background: var(--primary-alpha-30);
  color: white;
}

::-moz-selection {
  background: var(--primary-alpha-30);
  color: white;
}

/* 打印样式 */
@media print {
  .sidebar,
  .search-section,
  .footer,
  .page-indicator,
  .site-actions {
    display: none !important;
  }

  .main-content {
    margin: 0 !important;
    padding: 0 !important;
  }

  .background-layer {
    display: none;
  }

  body {
    background: white !important;
    color: black !important;
  }
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
  :root {
    --sidebar-compact-width: 40px;
    --header-height: 100px;
    --spacing-md: 8px;
    --search-height: 50px;
    --search-radius: 10px;
    --header-time-font-size: 50px;
  }

  .app {
    flex-direction: column;
  }

  .sidebar {
    position: fixed;
    bottom: 0;
    top: auto;
    left: 0;
    right: 0;
    width: 100%;
    height: 60px;
    flex-direction: row;
    transform: none;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: var(--spacing-sm);
  }
  
  .sidebar.full-height {
    justify-content: flex-start;
    padding-top: var(--spacing-lg);
  }
  
  .sidebar.full-height .sidebar-content {
    max-height: none;
    justify-content: flex-start;
  }

  .sidebar-content {
    flex-direction: row;
    align-items: center;
  }

  .sidebar-groups {
    flex-direction: row;
    justify-content: center;
    flex: 1;
    max-height: none;
  }

  .sidebar-group {
    flex: 1;
    max-width: 60px;
  }

  .sidebar-divider {
    display: none;
  }

  .sidebar-controls {
    flex-direction: row;
    padding-top: 0;
  }

  .main-content {
    margin-bottom: 60px;
    padding: var(--spacing-sm);
  }

  .sidebar.right-sidebar ~ .main-content {
    margin-right: 0;
  }

  .app-date-box {
    min-width: auto;
    padding: var(--spacing-md);
  }

  .app-time {
    font-size: 50px;
  }

  .app-date {
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 12px;
  }

  .search-container {
    max-width: auto;
    min-width: auto;
  }
  
  .search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    border-radius: 0;
    z-index: 1000;
  }

  .search-box {
    flex-direction: column;
    gap: var(--spacing-sm);
    border-radius: var(--search-radius, 10px);
    height: var(--search-height, 50px);
    padding: var(--spacing-md);
  }

  .search-engine-btn {
    width: 100%;
    justify-content: center;
    margin-right: 0;
    margin-bottom: var(--spacing-sm);
  }

  .search-input-wrapper {
    width: 100%;
  }

  .search-btn {
    width: 100%;
    margin-left: 0;
    margin-top: var(--spacing-sm);
  }

  .engine-options {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
    
  .engine-option {
    min-height: 70px;
    padding: var(--spacing-md);
  }
    
  .engine-option i {
    font-size: 20px;
  }

  .history-items {
    flex-direction: column;
    max-height: none;
  }

  .history-item {
    max-width: none;
    width: 100%;
  }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
  }

  /* 移动端减少动画复杂度 */
  .slide-up, .slide-down,
  .zoom-in, .zoom-out,
  .flip-in, .flip-out,
  .rotate-in, .rotate-out {
    animation-timing-function: ease;
  }
  
  .bounce-in, .bounce-out {
    animation: fadeIn 0.3s ease forwards;
  }
  
  .bounce-out {
    animation: fadeOut 0.3s ease forwards;
  }

  .sidebar-group:hover {
    transform: none;
  }
  
  .site-item:hover, .folder-item:hover {
    transform: none;
  }

  .floating-settings-btn {
    bottom: 70px;
  }

  /* 头部响应式 */
  .app-time {
    font-size: calc(var(--header-time-font-size, 70px) * 0.7);
  }
  
  .app-date {
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 12px;
  }
  
  .custom-text {
    font-size: calc(var(--custom-text-size, 32px) * 0.8);
  }
  
  .logo-container,
  .text-container {
    padding: var(--spacing-sm);
  }

  /* 风车响应式 */
  .windmill {
    right: 16px;
  }
  
  .sidebar-right ~ .windmill {
    right: calc(16px + 50px);
  }
  
  .windmill img {
    width: 36px;
    height: 36px;
  }
  
  .windmill-rod {
    height: 36px;
    width: 2.5px;
  }
  
  .windmill:hover .windmill-rod {
    height: 40px;
  }
  
  .windmill::after {
    font-size: 11px;
    padding: 4px 8px;
    top: -36px;
  }
  
  .loading-dots span {
    width: 5px;
    height: 5px;
  }
}

@media (max-width: 480px) {
  :root {
    --site-icon-size: 50px;
    --site-spacing: 8px;
    --header-time-font-size: 40px;
  }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  }

  .app-time {
    font-size: 40px;
  }

  .app-date {
    font-size: 12px;
  }

  .engine-options {
    grid-template-columns: 1fr;
  }

  .checkbox-grid {
    grid-template-columns: 1fr;
  }

  /* 头部响应式 */
  .app-time {
    font-size: calc(var(--header-time-font-size, 70px) * 0.6);
  }
  
  .custom-text {
    font-size: calc(var(--custom-text-size, 32px) * 0.7);
  }
  
  .header-logo,
  .logo-placeholder {
    width: calc(var(--logo-size, 80px) * 0.8) !important;
    height: calc(var(--logo-size, 80px) * 0.8) !important;
  }

  /* 小屏幕设备进一步简化动画 */
  .page {
    animation-duration: 0.2s !important;
  }
  
  .site-item, .folder-item {
    transition: none;
  }
}

/* ===== 高对比度模式支持 ===== */
@media (prefers-contrast: high) {
  .site-item:hover, .folder-item:hover {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }
  
  .sidebar-group.active {
    outline: 2px solid var(--color-primary);
  }

  .color-option.active {
    outline: 2px solid white;
    outline-offset: 2px;
  }
}

/* ===== 辅助类和工具样式 ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
/* ===== 动画系统 ===== */
.animations-enabled {
  /* 启用动画的标记类 */
}

.hover-animations-enabled {
  /* 启用悬停动画的标记类 */
}

.smooth-scrolling-enabled {
  scroll-behavior: smooth;
}

.reduced-motion * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

.no-animations * {
  animation: none !important;
  transition: none !important;
}

/* ===== 页面切换动画系统 ===== */

/* 淡入淡出动画 (fade) */
.page-fade-in {
  animation: pageFadeIn var(--animation-duration) var(--ease-in-out) forwards;
  opacity: 0;
}

.page-fade-out {
  animation: pageFadeOut var(--animation-duration) var(--ease-in-out) forwards;
  opacity: 1;
}

@keyframes pageFadeIn {
  0% {
    opacity: 0;
    transform: translateZ(0);
  }
  100% {
    opacity: 1;
    transform: translateZ(0);
  }
}

@keyframes pageFadeOut {
  0% {
    opacity: 1;
    transform: translateZ(0);
  }
  100% {
    opacity: 0;
    transform: translateZ(0);
  }
}

/* 上下滑动动画 (slide) */
.page-slide-up-in {
  animation: pageSlideUpIn var(--animation-duration) var(--ease-out) forwards;
  opacity: 0;
}

.page-slide-up-out {
  animation: pageSlideUpOut var(--animation-duration) var(--ease-out) forwards;
  opacity: 1;
}

.page-slide-down-in {
  animation: pageSlideDownIn var(--animation-duration) var(--ease-out) forwards;
  opacity: 0;
}

.page-slide-down-out {
  animation: pageSlideDownOut var(--animation-duration) var(--ease-out) forwards;
  opacity: 1;
}

/* 向上滑动进入 */
@keyframes pageSlideUpIn {
  0% {
    opacity: 0;
    transform: translateY(100%) translateZ(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
}

/* 向上滑动离开 */
@keyframes pageSlideUpOut {
  0% {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-100%) translateZ(0);
  }
}

/* 向下滑动进入 */
@keyframes pageSlideDownIn {
  0% {
    opacity: 0;
    transform: translateY(-100%) translateZ(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
}

/* 向下滑动离开 */
@keyframes pageSlideDownOut {
  0% {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
  100% {
    opacity: 0;
    transform: translateY(100%) translateZ(0);
  }
}

/* 缩放动画 (zoom) */
.page-zoom-in {
  animation: pageZoomIn var(--animation-duration) var(--ease-out) forwards;
  opacity: 0;
  transform-origin: center;
}

.page-zoom-out {
  animation: pageZoomOut var(--animation-duration) var(--ease-out) forwards;
  opacity: 1;
  transform-origin: center;
}

@keyframes pageZoomIn {
  0% {
    opacity: 0;
    transform: scale(0.8) translateZ(0);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateZ(0);
  }
}

@keyframes pageZoomOut {
  0% {
    opacity: 1;
    transform: scale(1) translateZ(0);
  }
  100% {
    opacity: 0;
    transform: scale(1.2) translateZ(0);
  }
}

/* 翻转动画 (flip) - 改为垂直翻转 */
.page-flip-in {
  animation: pageFlipIn var(--animation-duration) var(--ease-out) forwards;
  opacity: 0;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.page-flip-out {
  animation: pageFlipOut var(--animation-duration) var(--ease-out) forwards;
  opacity: 1;
  transform-style: preserve-3d;
  perspective: 1000px;
}

@keyframes pageFlipIn {
  0% {
    opacity: 0;
    transform: rotateX(-90deg) translateZ(0);
  }
  100% {
    opacity: 1;
    transform: rotateX(0) translateZ(0);
  }
}

@keyframes pageFlipOut {
  0% {
    opacity: 1;
    transform: rotateX(0) translateZ(0);
  }
  100% {
    opacity: 0;
    transform: rotateX(90deg) translateZ(0);
  }
}

/* 弹跳动画 (bounce) */
.page-bounce-in {
  animation: pageBounceIn var(--animation-duration) var(--ease-bounce) forwards;
  opacity: 0;
}

.page-bounce-out {
  animation: pageBounceOut var(--animation-duration) var(--ease-bounce) forwards;
  opacity: 1;
}

@keyframes pageBounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3) translateZ(0);
  }
  50% {
    opacity: 1;
    transform: scale(1.05) translateZ(0);
  }
  70% {
    transform: scale(0.9) translateZ(0);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateZ(0);
  }
}

@keyframes pageBounceOut {
  0% {
    opacity: 1;
    transform: scale(1) translateZ(0);
  }
  20% {
    transform: scale(1.1) translateZ(0);
  }
  50% {
    opacity: 1;
    transform: scale(1.05) translateZ(0);
  }
  100% {
    opacity: 0;
    transform: scale(0.3) translateZ(0);
  }
}

/* 旋转动画 (rotate) */
.page-rotate-in {
  animation: pageRotateIn var(--animation-duration) var(--ease-out) forwards;
  opacity: 0;
  transform-origin: center;
}

.page-rotate-out {
  animation: pageRotateOut var(--animation-duration) var(--ease-out) forwards;
  opacity: 1;
  transform-origin: center;
}

@keyframes pageRotateIn {
  0% {
    opacity: 0;
    transform: rotate(-180deg) scale(0.5) translateZ(0);
  }
  100% {
    opacity: 1;
    transform: rotate(0) scale(1) translateZ(0);
  }
}

@keyframes pageRotateOut {
  0% {
    opacity: 1;
    transform: rotate(0) scale(1) translateZ(0);
  }
  100% {
    opacity: 0;
    transform: rotate(180deg) scale(0.5) translateZ(0);
  }
}

/* ===== 侧边栏入场动画 ===== */
.sidebar {
  animation: sidebarSlideIn 0.4s var(--ease-out) forwards;
}

@keyframes sidebarSlideIn {
  0% {
    opacity: 0;
    transform: translateX(-20px) translateY(-50%);
  }
  100% {
    opacity: 1;
    transform: translateX(0) translateY(-50%);
  }
}

.sidebar.right-sidebar {
  animation: sidebarSlideInRight 0.4s var(--ease-out) forwards;
}

@keyframes sidebarSlideInRight {
  0% {
    opacity: 0;
    transform: translateX(20px) translateY(-50%);
  }
  100% {
    opacity: 1;
    transform: translateX(0) translateY(-50%);
  }
}

/* 通长布局的侧边栏动画 */
.sidebar.full-height {
  animation: sidebarFullHeightIn 0.5s var(--ease-out) forwards;
}

@keyframes sidebarFullHeightIn {
  0% {
    opacity: 0;
    transform: translateX(-100%) translateY(0);
  }
  100% {
    opacity: 1;
    transform: translateX(0) translateY(0);
  }
}

.sidebar.full-height.right-sidebar {
  animation: sidebarFullHeightInRight 0.5s var(--ease-out) forwards;
}

@keyframes sidebarFullHeightInRight {
  0% {
    opacity: 0;
    transform: translateX(100%) translateY(0);
  }
  100% {
    opacity: 1;
    transform: translateX(0) translateY(0);
  }
}

/* ===== 悬停动画 ===== */
.hover-animations-enabled .site-item {
  transition: all var(--transition-medium) var(--ease-out);
}

.hover-animations-enabled .site-item:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.hover-animations-enabled .sidebar-group {
  transition: all var(--transition-fast) var(--ease-out);
}

.hover-animations-enabled .sidebar-group:hover {
  transform: translateY(-1px) scale(1.02);
}

.hover-animations-enabled .search-btn {
  transition: all var(--transition-medium) var(--ease-out);
}

.hover-animations-enabled .search-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.hover-animations-enabled .sidebar-control-btn {
  transition: all var(--transition-fast) var(--ease-out);
}

.hover-animations-enabled .sidebar-control-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* ===== 搜索框焦点动画 ===== */
.search-box:focus-within {
  animation: searchFocus 0.3s var(--ease-out) forwards;
}

@keyframes searchFocus {
  0% {
    transform: translateY(0);
    box-shadow: var(--shadow-lg);
  }
  100% {
    transform: translateY(-2px);
    box-shadow: 
      0 12px 40px var(--primary-alpha-20),
      0 4px 12px var(--primary-alpha-10);
  }
}

/* ===== 拖拽动画 ===== */
.site-item.dragging {
  animation: dragPulse 0.5s var(--ease-out) infinite alternate;
}

@keyframes dragPulse {
  0% {
    transform: scale(1.05) rotate(3deg);
  }
  100% {
    transform: scale(1.1) rotate(5deg);
  }
}

.site-item.drag-over {
  animation: dragOverPulse 0.3s var(--ease-out) forwards;
}

@keyframes dragOverPulse {
  0% {
    background: transparent;
  }
  100% {
    background: var(--site-item-drag-over-bg, rgba(var(--color-primary-rgb), 0.1));
  }
}

/* ===== 动画工具类 ===== */
.animate-pulse {
  animation: pulse 2s var(--ease-in-out) infinite;
}

.animate-bounce {
  animation: bounce 2s var(--ease-bounce) infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.animate-ping {
  animation: ping 1s var(--ease-out) infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(-25%);
    animation-timing-function: var(--ease-bounce);
  }
  50% {
    transform: translateY(0);
    animation-timing-function: var(--ease-bounce);
  }
}

@keyframes ping {
  75%, 100% {
    transform: scale(2);
    opacity: 0;
  }
}

/* ===== 动画性能优化 ===== */
.page,
.site-item,
.sidebar-group,
.search-box {
  will-change: transform, opacity;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* 页面动画容器 */
.pages-container {
  perspective: 1200px;
  transform-style: preserve-3d;
}

.page {
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

/* 减少动画时的优化 */
.reduced-motion .page,
.reduced-motion .site-item,
.reduced-motion .sidebar-group {
  transition: none !important;
  animation: none !important;
}

.reduced-motion .page.active {
  opacity: 1;
  visibility: visible;
  display: flex !important;
}

.reduced-motion .page.hidden {
  opacity: 0;
  visibility: hidden;
  display: none !important;
}

/* ===== 动画状态类 ===== */
.animating {
  pointer-events: none;
}

/* 禁用动画时的回退 */
.no-animations .page {
  transition: none !important;
  animation: none !important;
}

.no-animations .page.active {
  opacity: 1;
  visibility: visible;
  display: flex !important;
}

.no-animations .page.hidden {
  opacity: 0;
  visibility: hidden;
  display: none !important;
}

/* ===== 响应式动画调整 ===== */
@media (max-width: 768px) {
  :root {
    --animation-duration: 250ms;
  }
  
  /* 移动端简化复杂页面动画 */
  .page-flip-in,
  .page-flip-out,
  .page-rotate-in,
  .page-rotate-out {
    animation: pageFadeIn var(--animation-duration) var(--ease-in-out) forwards;
  }
  
  .page-flip-out,
  .page-rotate-out {
    animation: pageFadeOut var(--animation-duration) var(--ease-in-out) forwards;
  }
  
  /* 移动端简化滑动动画 */
  .page-slide-up-in,
  .page-slide-down-in {
    animation: pageSlideUpIn var(--animation-duration) var(--ease-out) forwards;
  }
  
  .page-slide-up-out,
  .page-slide-down-out {
    animation: pageSlideUpOut var(--animation-duration) var(--ease-out) forwards;
  }
  
  /* 移动端侧边栏动画调整 */
  .sidebar {
    animation: sidebarMobileIn 0.3s var(--ease-out) forwards;
  }
  
  @keyframes sidebarMobileIn {
    0% {
      opacity: 0;
      transform: translateY(20px);
    }
    100% {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (max-width: 480px) {
  :root {
    --animation-duration: 200ms;
  }
  
  /* 小屏幕设备进一步简化 */
  .page-bounce-in,
  .page-bounce-out {
    animation: pageFadeIn var(--animation-duration) var(--ease-in-out) forwards;
  }
  
  .page-bounce-out {
    animation: pageFadeOut var(--animation-duration) var(--ease-in-out) forwards;
  }
  
  /* 小屏幕只保留淡入淡出和简单的上下滑动 */
  .page-slide-up-in,
  .page-slide-down-in,
  .page-slide-up-out,
  .page-slide-down-out {
    animation: pageFadeIn var(--animation-duration) var(--ease-in-out) forwards;
  }
  
  /* 简化悬停动画 */
  .hover-animations-enabled .site-item:hover,
  .hover-animations-enabled .sidebar-group:hover {
    transform: none;
  }
}

/* ===== 高性能模式 ===== */
@media (prefers-reduced-motion: reduce) {
  :root {
    --animation-duration: 0.01ms;
    --transition-fast: 0.01ms;
    --transition-medium: 0.01ms;
    --transition-slow: 0.01ms;
  }
  
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}