/* 容器布局 */
.container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* 顶部导航栏 */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: var(--top-nav-height, 48px);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom:1px solid var(--border-color);
  z-index: var(--z-sidebar);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
}

.top-nav .hamburger-menu {
  flex-shrink: 0;
  order: -1;
  margin-right: var(--spacing-sm);
}

.top-nav .header-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 0 0 auto;
}

.top-nav .header-title h1 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.nav-links {
  display: flex;
  gap: var(--spacing-sm);
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-normal);
  font-size: 14px;
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary-color);
}

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary-color);
  font-weight: 600;
}

.nav-link i {
  font-size: 16px;
}

.nav-link span {
  display: none;
}

@media (min-width: 768px) {
  .nav-link span {
    display: inline;
  }
}

/* 品牌 Logo - 小尺寸（用于 Header） */
.brand-logo {
  width: 24px;
  height: 24px;
  object-fit: contain;
  flex-shrink: 0;
}

/* 主内容区 */
.main-content {
  flex: 1;
  padding: var(--spacing-lg);
  padding-top: calc(var(--top-nav-height, 48px) + var(--spacing-lg));
  padding-left: var(--spacing-lg);
  overflow-y: auto;
}

/* Header右侧操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

/* 汉堡菜单按钮 */
.hamburger-menu {
  width: 24px;
  height: 18px;
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: none;
}

.hamburger-menu span {
  position: absolute;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger-menu span:nth-child(1) { top: 0; }
.hamburger-menu span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger-menu span:nth-child(3) { bottom: 0; }

/* 汉堡菜单激活状态 - 变成 X */
.hamburger-menu.active span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.hamburger-menu.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* 移动端下拉菜单面板 */
.mobile-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--glass-bg-xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  max-height: 400px;
  overflow-y: auto;
  z-index: 1000;
  display: none;
  padding: var(--spacing-sm);
}

.mobile-menu-dropdown.active {
  display: block;
  animation: dropdownFade 0.2s ease-out;
}

/* 移动端下拉菜单在小屏幕下的优化 */
@media (max-width: 768px) {
  .mobile-menu-dropdown {
    position: fixed;
    top: 40px; /* 与移动端导航栏高度一致 */
    left: 0;
    right: 0;
    width: 100%;
    min-width: unset;
    max-height: calc(100vh - 40px);
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
  }
}

/* 下拉菜单内的导航链接 */
.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: visible;
  padding: 0;
}

.mobile-nav-links .nav-link {
  width: 100%;
  padding: 12px var(--spacing-md);
  justify-content: flex-start;
  border-radius: var(--radius-sm);
  margin-bottom: 0;
}

.mobile-nav-links .nav-link span {
  display: inline;
}

.mobile-nav-links .nav-link i {
  width: 20px;
  text-align: center;
  margin-right: var(--spacing-sm);
}

/* 搜索切换按钮 */
.search-toggle-container {
  position: relative;
  margin-right: var(--spacing-md);
}

.search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.search-toggle:hover {
  background: var(--primary-light);
  color: var(--primary-color);
}

/* 搜索框下拉菜单 */
.search-box-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--glass-bg-xl);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 300px;
  z-index: 1000;
  animation: dropdownFade 0.2s ease-out;
}

@keyframes dropdownFade {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 搜索框 */
.search-box {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 16px;
  z-index: 1;
}

.search-box input[type="text"] {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm) 45px !important;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  color: var(--text-primary);
  font-size: 14px;
  height: var(--input-height-desktop);
  transition: all var(--transition-normal);
}

.search-box input[type="text"]:focus {
  border-color: var(--primary-color);
  background: var(--glass-bg-xl);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.2);
}

.search-box input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

/* 清除按钮 */
.search-clear {
  position: absolute;
  right: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.6;
  transition: all var(--transition-normal);
  z-index: 1;
}

.search-clear:hover {
  opacity: 1;
  color: var(--text-primary);
}

/* 搜索建议下拉框 */
.search-suggestions {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--glass-bg-xl);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.suggestion-item {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.suggestion-item:hover {
  background: var(--primary-light);
}

.suggestion-code {
  font-weight: 600;
  color: var(--text-primary);
  margin-right: var(--spacing-sm);
  min-width: 80px;
}

.suggestion-name {
  color: var(--text-secondary);
  font-size: 14px;
}

.suggestion-arrow {
  margin-left: auto;
  color: var(--text-muted);
  opacity: 0.5;
}

/* 无结果提示 */
.suggestion-empty {
  padding: var(--spacing-md);
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* 加载动画 */
.suggestion-loading {
  padding: var(--spacing-md);
  text-align: center;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.suggestion-loading i {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 语言选择器 */
.lang-selector {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.lang-selector i {
  font-size: 18px;
  color: var(--text-muted);
}

.lang-selector select {
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.lang-selector select:focus {
  outline: none;
}

/* Header右侧操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: auto;
}

/* 主题切换按钮（桌面端） */
.theme-toggle-desktop {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.theme-toggle-desktop:hover {
  background: var(--primary-light);
  transform: rotate(30deg);
}

.theme-toggle-desktop:active {
  transform: rotate(60deg);
}

/* 主题切换时的旋转动画 */
.theme-toggle-desktop.rotating {
  animation: themeRotate 0.3s ease;
}

@keyframes themeRotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 区块样式 */
section {
  margin-bottom: var(--spacing-lg);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.section-icon {
  font-size: 26px;
  color: var(--primary-color);
}

/* 徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  background: var(--primary-color);
  color: var(--white);
}

/* 主题选择器容器 */
.theme-toggle-container {
  position: relative;
  cursor: pointer;
}

/* 主题切换按钮（移动端） */
.theme-toggle-mobile {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--primary-color);
  font-size: 20px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.theme-toggle-mobile:hover {
  background: var(--primary-light);
  transform: rotate(30deg);
}

.theme-toggle-mobile:active {
  transform: rotate(60deg);
}

/* 主题切换时的旋转动画 */
.theme-toggle-mobile.rotating {
  animation: themeRotate 0.3s ease;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .top-nav {
    height: 40px;
    padding: 0 var(--spacing-sm);
    justify-content: space-between;
  }

  .top-nav .header-title h1 {
    font-size: 14px;
  }

  /* 隐藏顶部导航链接 */
  .top-nav > .nav-links {
    display: none;
  }

  /* 显示汉堡菜单 */
  .hamburger-menu {
    display: block;
    order: -1;
    margin-right: var(--spacing-sm);
  }

  /* 移动端标题布局 */
  .top-nav .header-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin: 0;
  }

  .nav-link {
    flex-shrink: 0;
  }

  .header-actions {
    flex: 0 0 auto;
    min-width: auto;
    order: 1;
  }

  .main-content {
    padding-top: calc(40px + var(--spacing-lg));
    padding: var(--spacing-lg);
  }

  .search-box-dropdown {
    min-width: 280px;
    right: -10px;
  }

  .header-title h1 {
    font-size: 16px;
  }
}

@media (min-width: 769px) {
  /* 桌面端隐藏汉堡菜单和下拉面板 */
  .hamburger-menu {
    display: none;
  }

  .mobile-menu-dropdown {
    display: none !important;
  }

  /* 桌面端显示顶部导航链接 */
  .top-nav > .nav-links {
    display: flex;
  }
}