/* ============================================
   极简个人博客 - 样式表
   设计理念：纯白背景、黑白灰配色、大量留白
   ============================================ */

/* --- 全局重置 & 基础设置 --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  background-color: #ffffff;
  color: #1a1a1a;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   顶部导航
   ============================================ */
.site-header {
  padding: 48px 0 32px;
  border-bottom: 1px solid #eeeeee;
  margin-bottom: 48px;
}

.site-title {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 28px;
  font-weight: 400;
  color: #1a1a1a;
  text-decoration: none;
  letter-spacing: 1px;
}

.site-nav {
  margin-top: 16px;
  display: flex;
  gap: 28px;
}

.site-nav a {
  font-size: 15px;
  color: #888888;
  text-decoration: none;
  transition: color 0.2s ease;
  cursor: pointer;
}

.site-nav a:hover,
.site-nav a.active {
  color: #1a1a1a;
}

/* ============================================
   文章列表（首页）
   ============================================ */
.post-list {
  list-style: none;
}

.post-item {
  display: flex;
  align-items: baseline;
  padding: 14px 0;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.post-item:hover {
  opacity: 0.6;
}

.post-title {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 18px;
  font-weight: 400;
  color: #1a1a1a;
  white-space: nowrap;
  flex-shrink: 0;
}

.post-dots {
  flex-grow: 1;
  min-width: 24px;
  margin: 0 12px;
  border-bottom: 1px dotted #cccccc;
  align-self: flex-end;
  margin-bottom: 5px;
}

.post-date {
  font-size: 14px;
  color: #aaaaaa;
  white-space: nowrap;
  flex-shrink: 0;
}

.post-list-empty {
  text-align: center;
  color: #aaaaaa;
  font-size: 15px;
  padding: 60px 0;
}

/* ============================================
   文章详情
   ============================================ */
.back-link {
  display: inline-block;
  font-size: 14px;
  color: #888888;
  text-decoration: none;
  margin-bottom: 40px;
  transition: color 0.2s ease;
  cursor: pointer;
}

.back-link:hover {
  color: #1a1a1a;
}

.back-link::before {
  content: "← ";
}

.article {
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.8;
}

.article h1 {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 32px;
  font-weight: 400;
  color: #1a1a1a;
  margin-bottom: 12px;
  line-height: 1.3;
}

.article-meta {
  font-size: 14px;
  color: #aaaaaa;
  margin-bottom: 40px;
}

.article h2 {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 22px;
  font-weight: 400;
  color: #1a1a1a;
  margin: 40px 0 16px;
}

.article h3 {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 18px;
  font-weight: 400;
  color: #333333;
  margin: 32px 0 12px;
}

.article p {
  margin-bottom: 20px;
  font-size: 16px;
}

.article blockquote {
  margin: 24px 0;
  padding: 12px 20px;
  border-left: 3px solid #dddddd;
  color: #666666;
  font-style: italic;
}

.article blockquote p {
  margin-bottom: 8px;
}

.article ul,
.article ol {
  margin: 0 0 20px 24px;
}

.article li {
  margin-bottom: 8px;
}

.article hr {
  border: none;
  border-top: 1px solid #eeeeee;
  margin: 40px 0;
}

.article code {
  background-color: #f5f5f5;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
}

.article pre {
  background: #f8f8f8;
  padding: 16px 20px;
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: 20px;
}

.article pre code {
  background: none;
  padding: 0;
  font-size: 14px;
  line-height: 1.6;
}

.article img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 24px auto;
}

/* ============================================
   页面通用标题（归档、关于）
   ============================================ */
.page-heading {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 28px;
  font-weight: 400;
  margin-bottom: 32px;
}

/* ============================================
   归档页
   ============================================ */
.archive-year {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 22px;
  font-weight: 400;
  color: #1a1a1a;
  margin: 36px 0 12px;
}

.archive-year:first-child {
  margin-top: 0;
}

.archive-item {
  display: flex;
  align-items: baseline;
  padding: 8px 0;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.archive-item:hover {
  opacity: 0.6;
}

.archive-item-date {
  font-size: 13px;
  color: #aaaaaa;
  flex-shrink: 0;
  width: 80px;
}

.archive-item-title {
  font-size: 16px;
  color: #1a1a1a;
}

.archive-empty {
  text-align: center;
  color: #aaaaaa;
  font-size: 15px;
  padding: 60px 0;
}

/* ============================================
   关于我页
   ============================================ */
#about-content p {
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.8;
}

#about-content ul {
  margin: 0 0 20px 20px;
}

#about-content li {
  margin-bottom: 8px;
}

#about-content a {
  color: #555;
}

/* ============================================
   【预留】评论区样式（display:none 直到启用）
   ============================================ */
.comment-heading {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-size: 20px;
  font-weight: 400;
  margin: 60px 0 24px;
  padding-top: 40px;
  border-top: 1px solid #eeeeee;
}

.comment-form {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 480px;
}

.comment-form input,
.comment-form textarea {
  padding: 10px 14px;
  border: 1px solid #dddddd;
  border-radius: 4px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.comment-form input:focus,
.comment-form textarea:focus {
  border-color: #999999;
}

.comment-form button {
  align-self: flex-start;
  padding: 8px 24px;
  background: #1a1a1a;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}

.comment-form button:hover {
  background: #444444;
}

/* ============================================
   【预留】关注按钮样式（display:none 直到启用）
   ============================================ */
.follow-btn {
  padding: 8px 24px;
  background: #1a1a1a;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}

.follow-btn:hover {
  background: #444444;
}

.follow-btn.following {
  background: #ffffff;
  color: #1a1a1a;
  border: 1px solid #1a1a1a;
}

/* ============================================
   【预留】登录模态框样式（display:none 直到启用）
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-box {
  background: #ffffff;
  padding: 40px;
  border-radius: 8px;
  width: 360px;
  max-width: 90vw;
}

.modal-box h2 {
  font-family: Georgia, "Times New Roman", "Noto Serif SC", serif;
  font-weight: 400;
  margin-bottom: 24px;
  font-size: 22px;
}

.modal-box input {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #dddddd;
  border-radius: 4px;
  font-size: 15px;
  margin-bottom: 12px;
  outline: none;
}

.modal-box input:focus {
  border-color: #999999;
}

.modal-box button {
  width: 100%;
  padding: 10px;
  background: #1a1a1a;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
  margin-top: 8px;
}

.modal-switch {
  text-align: center;
  font-size: 13px;
  color: #888888;
  margin-top: 16px;
}

.modal-switch a {
  color: #1a1a1a;
}

/* ============================================================
   file:// 协议提示
   ============================================================ */
#protocol-hint {
  background-color: #fafafa;
  border: 1px solid #eeeeee;
  border-radius: 4px;
  padding: 20px 0;
  margin-bottom: 24px;
}

#protocol-hint p {
  font-size: 14px;
  color: #888888;
  text-align: center;
  margin: 4px 0;
}

#protocol-hint strong {
  color: #555555;
  font-weight: 600;
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
  margin-top: 80px;
  padding: 32px 0;
  border-top: 1px solid #eeeeee;
  text-align: center;
  font-size: 13px;
  color: #cccccc;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }

  .site-header {
    padding: 32px 0 24px;
    margin-bottom: 32px;
  }

  .site-title {
    font-size: 24px;
  }

  .article h1 {
    font-size: 26px;
  }

  .article {
    line-height: 1.75;
  }

  .archive-item-date {
    width: 64px;
    font-size: 12px;
  }
}