/* 引入字体 */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&family=Lato:wght@400;700&display=swap');
@import url('https://cdn.jsdelivr.net/npm/source-han-sans@latest/SubsetOTF/SC/WOFF2/OTF/SourceHanSansSC-Regular.otf');

/* 全局样式 */
* {
  margin: 0;    /*把浏览器自带格式清零*/
  padding: 0;
  box-sizing: border-box;
  font-family: '霞鹜文楷', 'Playfair Display', serif;
}

/*大背景板*/
.page-wrapper{
  max-width: 1400px;
  margin:0 auto;
  padding: 0 20px;
}

body {
  font-family: "Arial", sans-serif;
  line-height: 1.6;
  background: linear-gradient(45deg, #d9effe, #f3f0ff); 
  color: #333;    /* 主体的文字 */
}

/* 导航栏 */
.navbar {
  background: linear-gradient(360deg, #4e92c0, #6e5fa4);  /*45°线性渐变 蓝紫混合*/
  color: rgb(250, 250, 251);
  padding: 1rem 2rem;  /*上下1rem，左右2rem内边距*/
  display: flex;       /*块级元素 弹性盒模型*/
  justify-content: space-between;  /*左右分布*/
  align-items: center;   /*flex 元素的外边距框在交叉轴上居中对齐*/
  margin-top: 2rem;
  border-radius: 8px 8px 0px 0px;
}

/*右上角导航条*/
.nav-links {
  list-style: none;
  display: flex;
  gap: 1rem;
}

.nav-links a {
  color: rgb(255, 255, 255);
  text-decoration: none;
}

/* 欢迎区域 */
.hero {
  background: linear-gradient(180deg, #4991c2, #e2e1e1); 
  color: white;
  padding: 3rem 2rem;
  height: 200px; 
  display: flex;
  flex-direction: column;
  justify-content: center; 
  align-items: center; 
  border-radius: 0px 0px 8px 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.hero h2 {
  font-size: 2.5rem;
}

/* 文章列表 */
.articles {
  padding: 5rem;
}

.article-card {
  background: white;
  margin-bottom: 1rem;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* 文章卡片「阅读更多」按钮 */
.btn-read {
  padding: 6px 18px;
  font-size: 14px;
  color: #fff;
  border: none;
  border-radius: 20px;
  background: linear-gradient(135deg, #007acc 0%, #005fa3 100%);
  box-shadow: 0 2px 8px rgba(0, 122, 204, 0.25);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 10px;
}

.btn-read:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 122, 204, 0.4);
}

.btn-read:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 122, 204, 0.3);
}

/* 页脚 */
footer {
  text-align: center;
  padding: 1rem;
  background: linear-gradient(360deg, #4e92c0, #6e5fa4);  /*45°线性渐变 蓝紫混合*/
  color: white;
  border-radius: 8px;
  margin-bottom: 2rem;
}

/* 响应式设计 */
@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-direction: column;
    margin-top: 0.5rem;
  }
}

/* 文章详情页样式 */
.article-detail {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.article-detail h1 {
  margin-bottom: 1rem;
}

.article-detail a {
  display: inline-block;
  margin-top: 1.5rem;
  color: #007acc;
  text-decoration: none;
}

/* 关于我和联系方式页面统一样式 */
.about, .contact {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.about ul, .contact ul {
  margin-left: 1.5rem;
}

/* 换头像按钮 */
.btn-avatar {
  padding: 8px 22px;
  font-size: 14px;
  color: #fff;
  border: none;
  border-radius: 30px;
  background: linear-gradient(135deg, #007acc 0%, #005fa3 100%);
  box-shadow: 0 4px 10px rgba(0, 122, 204, 0.25);
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 0 auto 1rem auto;
}

.btn-avatar:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 122, 204, 0.4);
}

.btn-avatar:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 122, 204, 0.3);
}

/* 头像统一样式 */
.avatar-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #007acc;
  display: block;
  margin: 0 auto 1rem auto; /* 居中+下方留空 */
}

/* 评论区 */
.comments {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.comments h3 {
  margin-bottom: 1rem;
}

#commentForm {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

#nickname,
#commentText {
  padding: 0.6rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

#commentText {
  min-height: 80px;
  resize: vertical;
}

#commentList {
  list-style: none;
  padding: 0;
}

#commentList li {
  border-bottom: 1px solid #eee;
  padding: 1rem 0;
}

#commentList li:last-child {
  border-bottom: none;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: #666;
  margin-bottom: 0.4rem;
}

.comment-body {
  white-space: pre-wrap; /* 保留换行 */
  line-height: 1.6;
}

.article-date {
  display: block;
  font-size: 13px;
  color: #666;
  margin-bottom: 0.6rem;
}

#article-content p {
  text-indent: 2em;   /* 中文段首两格 */
}

/* 导航栏：文字+图标 */
.brand {
  display: flex;
  align-items: center;   /* 垂直居中 */
  gap: 0.5rem;          /* 文字与图标间距 */
}
/* 图标大小 */
.brand i {
  font-size: 1.8rem;   
  color: #ffffff;     
}

/* 欢迎行：文字+图标 */
.hello {
  display: flex;
  align-items: center;   /* 垂直居中 */
  gap: 0.5rem;          /* 文字与图标间距 */
}
/* 图标大小 */
.hello i {
  font-size: 2rem;  
  color: #ffffff;    

}