@charset "utf-8";

/* ===== CSS 变量 ===== */
:root {
  --font-color-0: #e00000;
  --font-color-1: #252525;
  --font-color-2: #333;
  --font-color-3: #999;
  --bg-color-1: #f5f5f5;
  --bg-color-2: #fff;
  --line-1: #eee;
  --line-2: #ddd;
}

/* ===== 基础样式 ===== */
body {
  font-family: "Montserrat", "SF UI Text", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.6px;
  color: var(--font-color-2);
  background-color: var(--bg-color-1);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--font-color-0);
  text-decoration: none;
  transition: opacity 0.5s ease-in-out;
}

a:hover {
  opacity: 0.7;
}

/* ===== 主容器 ===== */
.paper-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 30px;
  background-color: var(--bg-color-2);
  border-radius: 24px;
  min-height: 100vh;
}

/* ===== 头部导航 ===== */
.header, .post-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line-1);
  flex-wrap: wrap;
}

.logo {
  font-size: 2rem;
  font-weight: 600;
  color: var(--font-color-1);
  letter-spacing: 2px;
}

.logo:hover {
  opacity: 0.8;
}

.nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.nav li a {
  color: var(--font-color-3);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav li a:hover {
  color: var(--font-color-0);
  opacity: 1;
}

.content {
  min-height: 60vh;
}

/* ===== 首页文章列表 ===== */
.post-list {
  margin-bottom: 40px;
}

.post {
  padding: 24px 0;
  border-bottom: 1px dashed var(--line-2);
}

.post:last-child {
  border-bottom: none;
}

.post-title {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.post-title a {
  color: var(--font-color-1);
  transition: color 0.3s ease;
}

.post-title a:hover {
  color: var(--font-color-0);
  opacity: 1;
}

.post-meta {
  color: var(--font-color-3);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.post-excerpt {
  color: var(--font-color-2);
  margin-bottom: 12px;
  line-height: 1.75;
}

.read-more {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--font-color-0);
  transition: all 0.3s ease;
}

.read-more::before {
  content: "{ ";
}

.read-more::after {
  content: " }";
}

.read-more:hover {
  letter-spacing: 2px;
  opacity: 1;
}

/* ===== 文章详情页 ===== */
.post-detail .post-title {
  font-size: 2rem;
  margin-bottom: 12px;
}

.post-detail .post-meta {
  padding-bottom: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line-1);
}

.post-categories {
  margin-left: 12px;
}

.category-link {
  color: var(--font-color-3);
  font-size: 0.85rem;
  margin-right: 8px;
}

.category-link:hover {
  color: var(--font-color-0);
  opacity: 1;
}

/* ===== 标签 ===== */
.tags {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line-1);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-item {
  display: inline-block;
  padding: 4px 14px;
  background: var(--bg-color-1);
  color: var(--font-color-2);
  border-radius: 14px;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  height: 28px;
  line-height: 20px;
}

.tag-item:hover {
  background: var(--font-color-1);
  color: #fff;
  opacity: 1;
}

/* ===== 归档页 ===== */
.page-title {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--font-color-1);
  margin-bottom: 28px;
}

.archive-item {
  display: flex;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-1);
}

.archive-item:nth-child(odd) {
  background-color: #fafafa;
}

.archive-date {
  flex-shrink: 0;
  width: 100px;
  color: var(--font-color-3);
  font-size: 0.9rem;
}

.archive-title {
  color: var(--font-color-1);
  font-weight: 500;
  transition: color 0.3s ease;
}

.archive-title:hover {
  color: var(--font-color-0);
  opacity: 1;
}

/* ===== 分页器 ===== */
.paginator {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-top: 40px;
  padding-top: 24px;
}

.paginator a,
.paginator span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  color: var(--font-color-2);
}

.paginator a:hover {
  background-color: var(--font-color-0);
  color: #fff;
  opacity: 1;
}

.paginator .page-number.current {
  border: 2px solid var(--font-color-0);
  color: var(--font-color-0);
  font-weight: 600;
}

.paginator .extend {
  color: var(--font-color-3);
}

/* ===== 页脚 ===== */
.footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--line-1);
  text-align: center;
  color: var(--font-color-3);
  font-size: 0.85rem;
}

.footer a {
  color: var(--font-color-3);
}

.footer a:hover {
  color: var(--font-color-0);
  opacity: 1;
}

/* ===== 关于页面 ===== */
.page-content {
  line-height: 1.75;
}

.page-content h1,
.page-content h2,
.page-content h3 {
  color: var(--font-color-1);
  margin: 20px 0 12px;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .paper-main {
    padding: 24px 18px;
    border-radius: 0;
    margin: 0;
  }

  .logo {
    font-size: 1.5rem;
  }

  .nav {
    gap: 16px;
    margin-top: 12px;
  }

  .post-title {
    font-size: 1.3rem;
  }

  .post-detail .post-title {
    font-size: 1.6rem;
  }

  .archive-date {
    width: 80px;
  }
}

@media (max-width: 480px) {
  .header, .post-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    gap: 14px;
  }

  .archive-item {
    flex-direction: column;
  }

  .archive-date {
    width: auto;
    margin-bottom: 4px;
  }
}