/* ===== Navigation ===== */
.site-nav {
  margin-top: 0.8em;
  padding-top: 0.6em;
  border-top: 1px solid #e8e8e8;
}

.site-nav .nav-link {
  display: block;
  padding: 0.25em 0;
  color: #666;
  text-decoration: none;
  font-size: 0.9em;
  transition: color 0.15s;
}

.site-nav .nav-link:hover,
.site-nav .nav-link.active {
  color: #267CB9;
}

.site-nav .nav-link.active {
  font-weight: 600;
}

/* ===== Blog Index ===== */
.blog-index h1 {
  margin-bottom: 0.15em;
}

.blog-description {
  color: #666;
  font-size: 0.95em;
  margin-bottom: 1.8em;
}

.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-item {
  margin-bottom: 1.8em;
  padding-bottom: 1.5em;
  border-bottom: 1px solid #eee;
}

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

.post-date {
  display: block;
  font-size: 0.82em;
  color: #888;
  margin-bottom: 0.2em;
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
}

.post-link {
  font-size: 1.15em;
  font-weight: 600;
  color: #267CB9;
  text-decoration: none;
}

.post-link:hover {
  text-decoration: underline;
}

.post-excerpt {
  color: #555;
  font-size: 0.9em;
  line-height: 1.6;
  margin-top: 0.3em;
  margin-bottom: 0.4em;
}

/* ===== Tags ===== */
.post-tags {
  margin-top: 0.3em;
}

.post-tag {
  display: inline-block;
  background: #eef4f8;
  color: #4a7a9e;
  font-size: 0.75em;
  padding: 0.15em 0.6em;
  border-radius: 3px;
  margin-right: 0.4em;
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
}

/* ===== Post Layout ===== */
.post {
  max-width: 720px;
}

.post-header {
  margin-bottom: 1.8em;
}

.post-title {
  margin-bottom: 0.2em;
  line-height: 1.25;
}

.post-meta {
  color: #888;
  font-size: 0.9em;
}

.post-meta .post-date {
  display: inline;
  margin-bottom: 0;
}

.post-meta .post-tags {
  margin-top: 0.3em;
}

/* Post body */
.post-content {
  line-height: 1.7;
  font-size: 1em;
  color: #333;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  line-height: 1.3;
}

.post-content h1 { font-size: 1.6em; }
.post-content h2 { font-size: 1.35em; padding-bottom: 0.3em; border-bottom: 1px solid #eee; }
.post-content h3 { font-size: 1.15em; }
.post-content h4 { font-size: 1.05em; }

.post-content p {
  margin: 1em 0;
}

.post-content a {
  color: #267CB9;
  text-decoration: none;
}

.post-content a:hover {
  text-decoration: underline;
}

.post-content ul,
.post-content ol {
  margin: 0.8em 0;
  padding-left: 1.8em;
}

.post-content li {
  margin: 0.3em 0;
}

.post-content blockquote {
  margin: 1.2em 0;
  padding: 0.4em 1em;
  border-left: 3px solid #267CB9;
  color: #555;
  background: #f8f9fa;
}

.post-content blockquote p {
  margin: 0.5em 0;
}

.post-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.2em auto;
}

.post-content code {
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
  background: #f0f0f0;
  padding: 0.15em 0.35em;
  border-radius: 3px;
  font-size: 0.9em;
}

.post-content pre {
  background: #2d2d2d;
  color: #ccc;
  padding: 1em 1.2em;
  border-radius: 5px;
  overflow-x: auto;
  margin: 1.2em 0;
  line-height: 1.5;
  font-size: 0.88em;
}

.post-content pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2em 0;
}

.post-content th,
.post-content td {
  border: 1px solid #ddd;
  padding: 0.5em 0.8em;
  text-align: left;
}

.post-content th {
  background: #f5f5f5;
  font-weight: 600;
}

.post-content hr {
  border: none;
  border-top: 1px solid #ddd;
  margin: 2em 0;
}

/* ===== Post Footer / Navigation ===== */
.post-footer {
  margin-top: 2.5em;
  padding-top: 1.5em;
  border-top: 1px solid #eee;
}

.post-nav {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1em;
  font-size: 0.9em;
}

.post-nav a {
  color: #267CB9;
  text-decoration: none;
  max-width: 48%;
}

.post-nav a:hover {
  text-decoration: underline;
}

.post-back {
  font-size: 0.9em;
}

.post-back a {
  color: #888;
  text-decoration: none;
}

.post-back a:hover {
  color: #267CB9;
}

/* ===== Publication Entry (Homepage) ===== */
.publication {
  display: flex;
  gap: 1.2em;
  align-items: flex-start;
  margin: 0.6em 0 1.2em;
}

.pub-thumb {
  flex: 0 0 180px;
  max-width: 180px;
}

.pub-thumb img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid #eee;
  border-radius: 4px;
}

.pub-body {
  flex: 1;
  min-width: 0;
}

.pub-title {
  font-weight: 600;
  line-height: 1.4;
}

.pub-authors {
  font-size: 0.95em;
  margin-top: 0.25em;
}

.pub-venue {
  font-size: 0.9em;
  color: #666;
  margin-top: 0.2em;
}

.pub-links {
  margin-top: 0.35em;
  font-size: 0.9em;
}

.pub-links a {
  color: #267CB9;
  text-decoration: none;
}

.pub-links a:hover {
  text-decoration: underline;
}

/* ===== Recent Writing (Homepage) ===== */
.recent-writing {
  margin-top: 1.2em;
}

.recent-posts-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.recent-posts-list li {
  margin-bottom: 0.5em;
  line-height: 1.5;
}

.recent-post-date {
  display: inline-block;
  font-size: 0.82em;
  color: #888;
  min-width: 6em;
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
}

.recent-posts-list a {
  color: #267CB9;
  text-decoration: none;
}

.recent-posts-list a:hover {
  text-decoration: underline;
}

.view-all {
  margin-top: 0.6em;
  font-size: 0.9em;
}

.view-all a {
  color: #267CB9;
  text-decoration: none;
}

/* ===== Empty State ===== */
.empty-state {
  padding: 2em 0;
  color: #888;
  font-style: italic;
}

/* ===== Back Link ===== */
.back-link {
  margin-top: 2em;
}

.back-link a {
  color: #888;
  text-decoration: none;
  font-size: 0.9em;
}

.back-link a:hover {
  color: #267CB9;
}

/* ===== Dark Mode ===== */
@media (prefers-color-scheme: dark) {

  /* Navigation */
  .site-nav {
    border-top-color: #333;
  }

  .site-nav .nav-link {
    color: #999;
  }

  .site-nav .nav-link:hover,
  .site-nav .nav-link.active {
    color: rgb(62, 183, 240);
  }

  /* Blog index */
  .blog-description {
    color: #999;
  }

  .post-item {
    border-bottom-color: #333;
  }

  .post-date,
  .recent-post-date {
    color: #888;
  }

  .post-excerpt {
    color: #aaa;
  }

  .post-link {
    color: rgb(62, 183, 240);
  }

  /* Tags */
  .post-tag {
    background: #2a3040;
    color: #8ab8d8;
  }

  /* Post body */
  .post-content {
    color: #dadbdf;
  }

  .post-content h2 {
    border-bottom-color: #333;
  }

  .post-content blockquote {
    background: #22232b;
    color: #aaa;
    border-left-color: rgb(62, 183, 240);
  }

  .post-content code {
    background: #2a2b33;
    color: #dadbdf;
  }

  .post-content pre {
    background: #1a1b22;
    color: #ccc;
  }

  .post-content th {
    background: #2a2b33;
  }

  .post-content th,
  .post-content td {
    border-color: #333;
  }

  .post-content hr {
    border-top-color: #333;
  }

  /* Publication entry */
  .pub-thumb img {
    border-color: #333;
  }

  .pub-venue {
    color: #999;
  }

  .pub-links a {
    color: rgb(62, 183, 240);
  }

  /* Post footer */
  .post-footer {
    border-top-color: #333;
  }

  .post-meta {
    color: #888;
  }

  /* Empty state */
  .empty-state {
    color: #888;
  }

  /* Back link */
  .back-link a,
  .post-back a {
    color: #888;
  }

  .back-link a:hover,
  .post-back a:hover {
    color: rgb(62, 183, 240);
  }
}

/* ===== Mobile ===== */
@media screen and (max-width: 960px) {
  .post {
    max-width: 100%;
  }

  .recent-post-date {
    display: block;
    min-width: auto;
    margin-bottom: 0.1em;
  }

  .post-nav {
    flex-direction: column;
    gap: 0.5em;
  }

  .post-nav a {
    max-width: 100%;
  }
}

@media screen and (max-width: 480px) {
  .post-content {
    font-size: 0.95em;
  }

  .post-title {
    font-size: 1.4em;
  }

  .post-item {
    margin-bottom: 1.2em;
    padding-bottom: 1em;
  }

  .pub-thumb {
    flex-basis: 110px;
    max-width: 110px;
  }
}