* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "微软雅黑 Light", "Microsoft YaHei", sans-serif;
  background-color: #b6e7db;
  line-height: 1.5;
  min-height: 100vh;
}

/* 导航栏响应式设计 */
.nav-container {
  width: 100%;
  padding: 10px 20px;
  box-sizing: border-box;
  position: relative;
}

nav {
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  border: 1px solid #eee;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  padding: 8px 0;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  font-family: 'Segoe UI', sans-serif;
}

nav a {
  color: #007bff;
  padding: 12px 20px;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.2s, color 0.2s;
  white-space: nowrap;
  margin: 2px;
}

nav a:hover {
  background-color: #f2f2f2;
  color: #0056b3;
}

/* 主要内容容器 */
#app {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  box-sizing: border-box;
}

.project-info-box {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  padding: 2rem;
  margin-bottom: 2rem;
}

/* 分类按钮 */
.filter-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin: 20px auto;
  background: #ffffff;
  border-radius: 10px;
  padding: 15px;
  width: 100%;
  max-width: 800px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.filter-bar button {
  margin: 5px;
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  background-color: #b6e7db;
  color: #007bff;
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
  white-space: nowrap;
}

.filter-bar button:hover,
.filter-bar button.active {
  background-color: #007bff;
  color: #fff;
}

/* 搜索框 */
.search-bar {
  display: flex;
  justify-content: center;
  margin: 20px auto;
  width: 100%;
  max-width: 600px;
}

.search-bar input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ccc;
  border-radius: 8px;
  outline: none;
  font-size: 14px;
  transition: border-color 0.3s;
  box-sizing: border-box;
}

.search-bar input:focus {
  border-color: #007bff;
  box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
}

/* 资源列表 */
.resource-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 20px auto;
  width: 100%;
  max-width: 1200px;
}

.resource-card {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  padding: 20px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 150px;
}

.resource-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.resource-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #333;
}

.resource-card p {
  font-size: 14px;
  color: #555;
  margin-bottom: 15px;
  flex-grow: 1;
}

.resource-card a {
  text-decoration: none;
  color: #007bff;
  font-weight: 500;
  padding: 8px 16px;
  border: 1px solid #007bff;
  border-radius: 6px;
  transition: background-color 0.2s, color 0.2s;
  display: inline-block;
}

.resource-card a:hover {
  background-color: #007bff;
  color: #fff;
}

/* 页脚 */
footer {
  text-align: center;
  font-size: 14px;
  margin: 40px 0 20px 0;
  color: #666;
  padding: 0 20px;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .nav-container {
    padding: 10px;
  }
  
  nav {
    flex-direction: column;
    padding: 10px;
  }
  
  nav a {
    width: 100%;
    text-align: center;
    margin: 2px 0;
  }
  
  #app {
    padding: 15px;
  }
  
  .filter-bar {
    padding: 12px;
    margin: 15px auto;
  }
  
  .filter-bar button {
    padding: 8px 12px;
    font-size: 13px;
    margin: 3px;
  }
  
  .search-bar {
    margin: 15px auto;
  }
  
  .search-bar input {
    padding: 10px 14px;
    font-size: 13px;
  }
  
  .resource-list {
    grid-template-columns: 1fr;
    gap: 15px;
    margin: 15px auto;
  }
  
  .resource-card {
    padding: 15px;
    min-height: 120px;
  }
  
  .resource-card h3 {
    font-size: 16px;
  }
  
  .resource-card p {
    font-size: 13px;
  }
  
  footer {
    padding: 0 10px;
  }

  .project-info-box {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 5px;
  }
  nav {
    padding: 5px;
  }
  nav a {
    padding: 10px 8px;
    font-size: 13px;
  }
  #app {
    padding: 8px;
  }
  .resource-list {
    gap: 10px;
  }
  .resource-card {
    padding: 10px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .resource-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .filter-bar {
    max-width: 600px;
  }
}

@media (min-width: 1200px) {
  .nav-container {
    max-width: 1200px;
    margin: 0 auto;
  }
  #app {
    max-width: 1200px;
  }
  .filter-bar {
    max-width: 800px;
  }
  .search-bar {
    max-width: 600px;
  }
  .resource-list {
    max-width: 1200px;
  }
  .resource-card {
    min-height: 180px;
  }
}

@media (min-width: 1600px) {
  .nav-container {
    max-width: 1400px;
  }
  #app {
    max-width: 1400px;
  }
  .resource-list {
    max-width: 1400px;
  }
}