/* ========== 全局重置 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", sans-serif;
  background-color: #121212;
  color: #e0e0e0;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: #00ccff;
}

a:hover {
  color: #66efff;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* ========== 导航栏 ========== */
.navbar {
  background-color: #1e1e1e;
  border-bottom: 2px solid #00ccff;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 99;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  color: #00ccff;
  font-size: 1.5rem;
}

nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: #fff;
  font-weight: 500;
}

nav a.active, nav a:hover {
  color: #00ccff;
}

/* ========== 搜索框 ========== */
.search-box {
  position: relative;
  margin-right: 1rem;
}

.search-box input {
  background: #2a2a2a;
  border: 1px solid #00ccff;
  color: #fff;
  padding: 6px 10px 6px 32px;
  border-radius: 20px;
  outline: none;
  width: 180px;
  transition: width 0.3s;
}

.search-box input:focus {
  width: 220px;
  border-color: #66efff;
}

.search-box i {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: #00ccff;
}

/* ========== 头像样式 ========== */
.avatar {
  text-align: center;
  margin-bottom: 1rem;
}
.avatar img {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 3px solid #00ccff;
  object-fit: cover;
  box-shadow: 0 0 10px #00ccff66;
}

/* ========== 主体布局 ========== */
.main-content {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

/* ========== 文章卡片 ========== */
.card {
  background-color: #1e1e1e;
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border-left: 4px solid #00ccff;
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-3px);
}

.category {
  display: inline-block;
  background-color: #00ccff;
  color: #121212;
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.8rem;
}

.blog-list h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: #fff;
}

article h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.meta {
  color: #999;
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

.excerpt {
  color: #ccc;
  margin-bottom: 1rem;
}

.read-more {
  font-size: 0.9rem;
  font-weight: bold;
}

/* 文章标签 */
.tags {
  margin: 12px 0;
}
.tags span {
  display: inline-block;
  background: #252525;
  color: #00ccff;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 4px;
  margin-right: 6px;
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.tag-cloud a {
  background: #252525;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 13px;
}

/* 联系方式 */
.contact {
  margin-top: 12px;
  line-height: 1.8;
  font-size: 14px;
}
.contact i {
  color: #00ccff;
  width: 20px;
}

/* ========== 侧边栏 ========== */
.sidebar h3 {
  margin-bottom: 1rem;
  color: #fff;
  text-align: center;
}

.categories {
  list-style: none;
}

.categories li {
  margin: 0.5rem 0;
}

/* ========== 底部 ========== */
footer {
  background-color: #1e1e1e;
  text-align: center;
  padding: 1.5rem 0;
  margin-top: 3rem;
  border-top: 1px solid #333;
  color: #888;
}

/* ========== 移动端适配 ========== */
@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }

  .main-content {
    grid-template-columns: 1fr;
  }

  .search-box {
    margin: 0.5rem 0;
  }
}