* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #ffffff;
  color: #202122;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: #0645ad;
  text-decoration: none;
}

a:visited {
  color: #0b0080;
}

a:hover {
  text-decoration: underline;
}

/* Navbar */

.navbar {
  border-bottom: 1px solid #a2a9b1;
  padding: 12px 24px;
  background: #f8f9fa;
}

.navbar-home {
  font-weight: bold;
  font-size: 1.1rem;
  color: #202122;
}

.navbar-home:visited {
  color: #202122;
}

/* Content */

.content {
  max-width: 780px;
  margin: 0 auto;
  padding: 32px 24px;
  min-height: calc(100vh - 220px);
}

.content h1 {
  font-size: 1.9rem;
  border-bottom: 1px solid #a2a9b1;
  padding-bottom: 6px;
  margin-bottom: 12px;
}

.content h2 {
  font-size: 1.4rem;
  border-bottom: 1px solid #eaecf0;
  padding-bottom: 4px;
  margin-top: 28px;
}

.content h3 {
  font-size: 1.15rem;
  margin-top: 22px;
}

.content p {
  margin: 12px 0;
}

.content .description {
  color: #54595d;
  font-style: italic;
  margin-bottom: 24px;
}

.content blockquote {
  margin: 16px 0;
  padding: 6px 16px;
  border-left: 4px solid #a2a9b1;
  color: #54595d;
  background: #f8f9fa;
}

.content code {
  background: #f8f9fa;
  border: 1px solid #eaecf0;
  padding: 1px 5px;
  font-family: "Courier New", monospace;
  font-size: 0.9em;
}

.content pre {
  background: #f8f9fa;
  border: 1px solid #eaecf0;
  padding: 12px;
  overflow-x: auto;
}

.content pre code {
  border: none;
  padding: 0;
}

/* Search */

.search-input {
  width: 100%;
  padding: 8px 10px;
  margin-bottom: 16px;
  border: 1px solid #a2a9b1;
  background: #ffffff;
  color: #202122;
  font-family: inherit;
  font-size: 0.95rem;
}

.search-input:focus {
  outline: 2px solid #0645ad;
  outline-offset: -1px;
}

.list-note {
  color: #54595d;
  font-size: 0.85rem;
  margin: 0 0 10px 0;
  min-height: 1.2em;
}

/* Article list (home) */

.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid #eaecf0;
}

.article-list li {
  border-bottom: 1px solid #eaecf0;
}

.article-list li a {
  display: block;
  padding: 10px 6px;
}

.article-list li.empty {
  padding: 10px 6px;
  color: #54595d;
  font-style: italic;
}

.article-list .item-title {
  display: block;
}

/* Tags */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.tag {
  display: inline-block;
  font-family: "Courier New", monospace;
  font-size: 0.75rem;
  color: #54595d;
  background: #f8f9fa;
  border: 1px solid #eaecf0;
  padding: 2px 8px;
  border-radius: 3px;
}

.content.article .tags {
  margin-bottom: 20px;
}

/* Article page */

.back-link {
  display: inline-block;
  margin-bottom: 18px;
}

/* Footer */

.footer {
  border-top: 1px solid #a2a9b1;
  background: #f8f9fa;
  padding: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  font-size: 0.9rem;
  color: #54595d;
}

.footer-col {
  flex: 1;
  min-width: 180px;
}

.footer-col h3 {
  font-size: 0.95rem;
  margin: 0 0 8px 0;
  color: #202122;
}

.footer-col p {
  margin: 4px 0;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

@media (max-width: 600px) {
  .content {
    padding: 24px 16px;
  }
}