/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
}

body {
  background-image: url("../img/mountain.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  color: #fff;
  position: relative;
}

body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.2) 0%,
    rgba(0, 0, 0, 0.3) 100%
  );
  z-index: 0;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at center,
    transparent 0%,
    rgba(0, 0, 0, 0.2) 100%
  );
  z-index: 1;
  pointer-events: none;
}

.container {
  position: relative;
  z-index: 2;
}

.container {
  display: flex;
  height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
  width: 65px;
  height: 100%;
  background: linear-gradient(180deg,
    rgba(0, 0, 0, 0.5) 0%,
    rgba(0, 0, 0, 0.4) 100%);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  scrollbar-width: none; /* Firefox */
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 5px 0 25px rgba(0, 0, 0, 0.15);
}

.sidebar::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

.sidebar:hover {
  width: 160px;
  background: linear-gradient(180deg,
    rgba(0, 0, 0, 0.6) 0%,
    rgba(0, 0, 0, 0.5) 100%);
}

.logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 25px;
  cursor: pointer;
  padding: 10px 0;
  transition: all 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.logo i {
  font-size: 28px;
  color: #ff6b00;
  margin-bottom: 8px;
  filter: drop-shadow(0 2px 4px rgba(255, 107, 0, 0.3));
  transition: all 0.3s ease;
}

.logo:hover i {
  transform: scale(1.1) translateY(-2px);
  filter: drop-shadow(0 4px 8px rgba(255, 107, 0, 0.4));
}

.nav-items {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 8px;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%;
  padding: 12px 0;
  position: relative;
  overflow: hidden;
}

.nav-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: linear-gradient(to bottom, #ff6b00, #ff8533);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.nav-item i {
  font-size: 22px;
  margin-bottom: 6px;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.nav-item span {
  font-size: 13px;
  font-weight: 500;
  opacity: 0.95;
  text-align: center;
  transition: all 0.3s ease;
  white-space: nowrap;
  position: relative;
  z-index: 1;
}

.nav-item.active {
  background: linear-gradient(90deg,
    rgba(255, 107, 0, 0.15) 0%,
    rgba(255, 107, 0, 0.05) 100%);
}

.nav-item.active::before {
  transform: scaleY(1);
}

.nav-item.active i,
.nav-item.active span {
  color: #ff6b00;
  text-shadow: 0 2px 4px rgba(255, 107, 0, 0.2);
}

.nav-item:hover {
  background: linear-gradient(90deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.02) 100%);
}

.nav-item:hover::before {
  transform: scaleY(0.6);
}

.nav-item:hover i {
  transform: translateY(-3px);
  color: rgba(255, 255, 255, 0.95);
}

.nav-item:hover span {
  transform: translateY(1px);
  opacity: 1;
}

.add-btn i {
  font-size: 24px;
}

.settings {
  margin-bottom: 20px;
}

.settings i {
  font-size: 22px;
  cursor: pointer;
}

/* 主内容区样式 */
.main-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  position: relative;
  overflow-y: auto; /* 添加垂直滚动 */
}

/* 时间和日期 */
.time-container {
  margin-top: 45px;
  text-align: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  padding: 20px 40px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.time-container:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
  background: rgba(255, 255, 255, 0.15);
}

.time {
  font-size: 84px;
  font-weight: 300;
  letter-spacing: 6px;
  text-shadow: 0 2px 15px rgba(0, 0, 0, 0.4);
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 5px;
}

.date {
  font-size: 16px;
  margin-top: 10px;
  letter-spacing: 3px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 300;
}

/* 搜索框 */
.search-container {
  margin-top: 50px;
  width: 100%;
  display: flex;
  justify-content: center;
}

.search-box {
  width: 700px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.12);
  border-radius: 30px;
  display: flex;
  align-items: center;
  padding: 0 25px;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.search-box:hover,
.search-box:focus-within {
  background-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.25);
}

.search-icon {
  width: 30px;
  height: 30px;
  margin-right: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #4285f4;
}

.search-box input {
  flex-grow: 1;
  height: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-size: 16px;
  color: #ffffff;
  letter-spacing: 0.5px;
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.search-button {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.search-button:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

.search-button i {
  color: #ffffff;
  font-size: 18px;
}

/* 网站图标区域 */
.websites-container {
  margin-top: 60px;
  width: 90%;
  max-width: 1200px;
  margin-bottom: 180px;
  padding-bottom: 50px;
}

.website-item a {
  text-decoration: none;  /* 移除链接下划线 */
  color: inherit;  /* 继承父元素的文字颜色 */
  display: flex;  /* 使链接也保持flex布局 */
  flex-direction: column;
  align-items: center;
}

/* 优化网站图标区域布局 */
.website-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 25px;
  margin-top: 25px;
}

.website-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.3s ease;
  cursor: pointer;
  width: calc(20% - 25px); /* 每行显示5个图标 */
  max-width: 140px;
  min-width: 100px;
}

.website-item:hover {
  transform: translateY(-5px);
}

.website-icon {
  width: 70px;
  height: 70px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  position: relative;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.website-icon:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.22);
}

.website-name {
  font-size: 12px;
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  transition: all 0.3s ease;
  text-align: center;
  word-break: break-word; /* 防止文字溢出 */
}

/* 响应式设计调整 */
@media (max-width: 768px) {
  .website-item {
    width: calc(33.33% - 15px); /* 每行最多显示3个图标 */
  }
}

@media (max-width: 480px) {
  .website-item {
    width: calc(50% - 10px); /* 每行最多显示2个图标 */
  }
}

/* Dock样式 */
.dock-container {
  position: fixed;
  bottom: 30px;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  z-index: 1000; /* 提高z-index确保Dock栏在其他元素上方 */
  pointer-events: none; /* 防止Dock容器阻挡点击 */
}

.dock {
  pointer-events: auto;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(15px);
  border-radius: 25px;
  display: flex;
  padding: 18px;
  gap: 18px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dock:hover {
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

.dock-item {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.dock-item:hover {
  transform: translateY(-8px) scale(1.08);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.25);
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.2);
}

.dock-item i {
  font-size: 26px;
  transition: all 0.3s ease;
  color: rgba(255, 255, 255, 0.9);
}

.dock-item:hover i {
  transform: scale(1.1);
  color: rgba(255, 255, 255, 1);
}

.dock-item img {
  width: 35px;
  height: 35px;
  object-fit: contain;
}

/* 媒体查询 - 响应式设计 */
@media (max-width: 1200px) {
  .website-item {
    width: calc(25% - 25px); /* 每行4个图标 */
  }
}

@media (max-width: 992px) {
  .websites-container {
    width: 95%;
  }
  
  .website-item {
    width: calc(33.33% - 25px); /* 每行3个图标 */
  }

  .time {
    font-size: 72px;
  }

  .search-box {
    width: 85%;
  }
}

@media (max-width: 768px) {
  .time {
    font-size: 56px;
  }

  .date {
    font-size: 14px;
  }

  .search-box {
    width: 90%;
    height: 50px;
  }

  .website-item {
    width: calc(50% - 20px); /* 每行2个图标 */
  }

  .website-icon {
    width: 65px;
    height: 65px;
  }

  .dock {
    overflow-x: auto;
    width: 95%;
    padding: 12px;
    gap: 12px;
  }

  .dock-item {
    min-width: 50px;
  }
}

@media (max-width: 480px) {
  .sidebar {
    width: 45px;
  }

  .sidebar:hover {
    width: 120px;
  }

  .time {
    font-size: 42px;
    letter-spacing: 2px;
  }

  .date {
    font-size: 12px;
    letter-spacing: 1px;
  }

  .search-box {
    height: 45px;
    padding: 0 15px;
  }

  .search-box input {
    font-size: 14px;
  }

  .website-item {
    width: calc(50% - 15px);
    min-width: auto;
  }

  .website-icon {
    width: 55px;
    height: 55px;
  }

  .website-name {
    font-size: 11px;
  }

  .dock {
    padding: 10px;
    gap: 10px;
  }

  .dock-item {
    width: 45px;
    height: 45px;
    min-width: 45px;
    border-radius: 12px;
  }
}

@media (max-width: 360px) {
  .time {
    font-size: 36px;
  }

  .website-icon {
    width: 50px;
    height: 50px;
  }

  .dock-item {
    width: 40px;
    height: 40px;
    min-width: 40px;
  }
}

/* 提供默认的图标样式 */
.website-icon i,
.dock-item i {
  font-size: 24px;
  color: white;
}

.search-icon i {
  font-size: 20px;
  color: #4285f4;
}

/* 隐藏屏幕阅读器专用文本 */
.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;
}

/* 网站分类样式 */
.website-category {
  display: none; /* 默认隐藏 */
  width: 100%;
  margin-bottom: 30px;
  opacity: 0; /* 初始透明度为0 */
  transition: opacity 0.3s ease; /* 添加渐变效果 */
  max-height: calc(60vh - 80px); /* 增加最大高度 */
  overflow-y: auto; /* 添加垂直滚动条 */
  scroll-behavior: smooth; /* 添加平滑滚动效果 */
  -webkit-overflow-scrolling: touch; /* 增加iOS设备上的滚动惯性 */
  padding-bottom: 20px; /* 确保底部内容不被遮挡 */
}

.website-category.active-category {
  display: block; /* 显示激活的分类 */
  opacity: 1; /* 完全可见 */
}

/* 自定义滚动条样式 */
.website-category::-webkit-scrollbar {
  width: 6px; /* 减小滚动条宽度 */
}

.website-category::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  margin: 4px 0; /* 添加上下边距 */
}

.website-category::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1); /* 添加边框 */
}

.website-category::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.5);
}

.category-title {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
  letter-spacing: 1px;
  position: relative;
  padding-bottom: 10px;
}

.category-title:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: linear-gradient(
    to right,
    rgba(255, 107, 0, 0.2),
    rgba(255, 107, 0, 0.8),
    rgba(255, 107, 0, 0.2)
  );
  border-radius: 1px;
}

/* 增加网站图标色彩 */
.website-icon.pink:before {
  background: linear-gradient(145deg, #fb7299, #ffa8c0);
}

.website-icon.green:before {
  background: linear-gradient(145deg, #34a853, #46d066);
}

.website-icon.orange:before {
  background: linear-gradient(145deg, #ff9900, #ffbb44);
}

.website-icon.purple:before {
  background: linear-gradient(145deg, #9146ff, #c391ff);
}

/* 多彩链接效果样式 - 如图片所示 */
.education-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  width: 100%;
}

.education-link {
  width: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
}

.education-link:hover {
  transform: translateY(-5px);
}

.education-icon {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  transition: all 0.3s ease;
}

.education-icon i, .education-icon span {
  font-size: 28px;
  color: white;
}

.education-name {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  text-align: center;
}

/* 图标颜色定义 */
.edu-wikipedia {
  background-color: #3366cc;
}

.edu-coursera {
  background-color: #29b35b;
}

.edu-edx {
  background-color: #e2282e;
}

.edu-khan {
  background-color: #4c8bf5;
}

.edu-nature {
  background-color: #222222;
}

.edu-duolingo {
  background-color: #e53935;
}

.edu-udemy {
  background: linear-gradient(45deg, #ec5252, #6e1a52);
}

.edu-research {
  background-color: #3b95d0;
}

/* 图标内容样式 */
.edu-wikipedia span {
  font-family: serif;
  font-weight: bold;
  font-size: 34px;
}

.edu-research span {
  font-family: serif;
  font-size: 26px;
  font-weight: bold;
}

.education-link:hover .education-icon {
  transform: scale(1.05);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
}