/* 分类相关样式 */

/* 分类筛选栏 */
.category-filter {
  position: fixed;
  left: 50px;
  top: 100px;
  background-color: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
  z-index: 100;
  width: 180px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.filter-title {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 5px;
  color: var(--text-color);
  font-family: 'Noto Serif SC', "SimSun", serif;
  font-weight: 700; /* bold字重 */
  position: relative;
  padding-left: 15px;
}

.filter-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 16px;
  background-color: var(--blue-color);
  border-radius: 2px;
}

.filter-tags {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.filter-tag {
  padding: 5px 10px;
  border: var(--border-width) solid var(--light-color);
  border-radius: 15px;
  background-color: var(--background-color);
  color: var(--text-color);
  cursor: var(--cursor-click);
  transition: all 0.3s ease;
  font-size: 12px;
  font-family: 'Noto Serif SC', "SimSun", serif;
  font-weight: 400; /* regular字重 */
  text-align: center;
}

.filter-tag:hover {
  background-color: var(--light-color);
  transform: translateY(-2px);
}

.filter-tag.active {
  background-color: var(--blue-color);
  color: white;
  border-color: var(--blue-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .category-filter {
    position: static;
    background-color: transparent;
    border: none;
    border-top: var(--border-width) solid var(--light-color);
    border-radius: 0;
    padding: 20px 0;
    box-shadow: none;
    width: 100%;
    max-width: 800px;
    margin: 20px auto 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  
  .filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }
}

/* 分类页样式 */
.category-title {
  text-align: center;
  margin-bottom: 30px;
  font-size: 28px;
  font-weight: bold;
  color: var(--text-color);
}

.category-posts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.category-post {
  padding: var(--spacing-md);
  border: var(--border-width) solid var(--light-color);
  border-radius: var(--border-radius);
  transition: box-shadow 0.3s;
}

.category-post:hover {
  box-shadow: var(--box-shadow);
}

.category-post-title {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--text-color);
}

.category-post-meta {
  font-size: var(--font-size-sm);
  color: #999999;
  margin-bottom: 10px;
}

.category-post-excerpt {
  font-size: 15px;
  color: var(--secondary-color);
  margin-bottom: 10px;
}

/* 夜间模式 */
body.dark-mode .category-filter {
  background-color: var(--dark-background);
  border-color: var(--dark-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body.dark-mode .filter-title {
  color: var(--dark-text);
}

body.dark-mode .filter-tag {
  background-color: var(--dark-background);
  border-color: var(--dark-border);
  color: var(--dark-text);
}

body.dark-mode .filter-tag:hover {
  background-color: var(--dark-border);
}

body.dark-mode .filter-tag.active {
  background-color: var(--blue-color);
  color: white;
  border-color: var(--blue-color);
}

body.dark-mode .category-title {
  color: var(--dark-text);
}

body.dark-mode .category-post {
  background-color: var(--dark-background);
  border-color: var(--dark-border);
}

body.dark-mode .category-post-title {
  color: var(--dark-text);
}

body.dark-mode .category-post-meta {
  color: #888888;
}

body.dark-mode .category-post-excerpt {
  color: #aaaaaa;
}