:root {
  --primary-color: #2d6a4f; /* 深绿色，博客主色 */
  --secondary-color: #40916c; /* 浅绿色，博客次色 */
  --text-color: #343a40; /* 深灰色，正文色 */
  --background-color: #fdf6e3; /* 米黄色，博客背景色 */
  --left-bg-color: #ffe5b4; /* 浅橙色，侧栏背景色 */
  --border-color: #b7b7a4; /* 浅棕色，边框色 */
  --verbose-color: #6c757d; /* 中灰色，次要文字色 */
  --heading-font: "黑体, 'Heiti SC', 'SimHei', sans-serif",
  --body-font: "宋体, 'SimSun', 'Songti SC', serif"
}
body {
  margin: 0;
  font-family: Arial, sans-serif;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--primary-color);
  font-family: var(--heading-font), serif;
}

p {
  color: var(--text-color);
  font-family: var(--body-font), serif;
}

.main {
  display: flex;
  min-height: 100vh;
}

.left {
  min-width: 400px;
  align-content: center;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  background-image: url('left-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.right {
  flex: 1;
  background-color: var(--background-color);
  padding: 20px;
  border: 1px solid var(--border-color);
  margin-left: 400px; /* 避免被left遮挡 */
}

.right-card {
  background-color: #fff;
  padding: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.right-card:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.right-card.height-viewport {
  height: 95%;
}

.site-name {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-align: center;
  margin-top: 20px;
}

.avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 20px auto;
  background-color: #ccc; /* 占位符颜色 */
  text-align: center;
  align-content: center;
}

.nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 20px;
  gap: 10px;
}

.right-card.height-viewport {
  min-height: 90vh;
}

.nav a {
  text-decoration: none;
  color: var(--primary-color);
  font-weight: bold;
}

.nav a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 20px;
}
.social-links a {
  text-decoration: none;
  color: var(--primary-color);
  font-weight: bold;
}

.socail-links a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.article-container {
  color: var(--text-color);
  padding: 20px;
  height: 100vh;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
  .article-container {
    width: 80%;
    margin: 10px auto;
  }
}

.comment {
  margin-top: 20px;
}

.comment-input {
  width: 100%;
  min-height: 80px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-family: var(--body-font), serif;
  color: var(--text-color);
  padding-right: 120px; /* 为按钮留出空间 */
  box-sizing: border-box;
}

.comment-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 8px 12px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.comment-btn:hover {
  background-color: var(--secondary-color);
}

.form {
  display: flex;
  flex-direction: row;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: 1 1 0;
}

.form-group input {
  flex: 1;
  padding: 5px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-family: var(--body-font), serif;
  color: var(--text-color);
}

.comment-area {
  position: relative;
  width: 100%;
}

article h2 a {
  text-decoration: none;
  color: var(--primary-color);
}
article h2 a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.post-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 10px;
  list-style: none;
  padding: 0;
}

.post-meta li a {
  text-decoration: none;
  color: var(--primary-color);
}
.post-meta li a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.nickname {
  text-decoration: none;
  color: var(--primary-color);
}

.nickname:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.meta-verbose {
  color: var(--verbose-color);
  font-size: 0.9em;
}

.pagination {
  display: flex;
  justify-content: center;
  text-align: center;
  gap: 10px;
  margin-top: 20px;
}

.current-page {
  font-weight: bold;
  color: var(--verbose-color);
  margin: auto 0;
}

.clickable-page {
  text-decoration: none;
  color: var(--primary-color);
  font-weight: bold;
  padding: 5px 10px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  margin: auto 0;
}

.clickable-page:hover {
  color: var(--secondary-color);
  background-color: var(--background-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.more-post {
  text-decoration: none;
  color: var(--primary-color);
  font-weight: bold;
}

.more-post:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.scrollup {
  position: fixed;
  display: none; /* 默认隐藏 */
  bottom: 20px;
  right: 20px;
  background-color: var(--primary-color);
  color: white;
  padding: 10px;
  border-radius: 50%;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.scrollup:hover {
  background-color: var(--secondary-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

p > img {
  float: left;              /* 图片靠左浮动 */
  margin: 0 10px 10px 0;    /* 图片右边和下方留出间距，防止文字贴太紧 */
  width: 200px;             /* 固定图片宽度 */
  height: auto;
}

@media (max-width: 768px) {
  .main {
    flex-direction: column;
  }

  .left {
    position: relative;
    width: 100%;
    height: auto;
  }
  .right {
    margin-left: 0;
  }

  .nav {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 8px;
  }
  .social-links {
    margin-bottom: 8px;
  }

  p > img {
    float: none;
    display: block;
    width: 100%;
    height: auto;
    margin: 0;
  }

  .form {
    flex-direction: column;
  }
  .form-group {
    width: 100%;
  }

}