:root {
  --bg-primary: #fafaf8;
  --bg-secondary: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-tertiary: #7a7a7a;
  --accent: #c1504f;
  --border: #e5e5e0;
  --nav-height: 52px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Work Sans", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.shell {
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
  padding: calc(var(--nav-height) + 2rem) 2rem 4rem;
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 1.75rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  position: relative;
  transition: color 0.3s ease;
}

.site-nav a:hover {
  color: var(--accent);
}

.site-nav a.is-active {
  color: var(--accent);
}

.site-nav a::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

.site-nav a:hover::after {
  width: 100%;
}

.site-nav a.is-active::after {
  width: 100%;
}

.content {
  min-height: calc(100vh - var(--nav-height) - 8rem);
}

.blog-list {
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.post-item {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.6rem 0;
}

.post-item h2 {
  font-family: "Crimson Pro", serif;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.2;
}

.post-item h2 a,
.archive-list a,
.post-content a {
  color: var(--text-primary);
  text-decoration: none;
}

.post-item:hover h2 a,
.archive-list a:hover,
.post-content a:hover {
  color: var(--accent);
}

.blog-meta {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.blog-excerpt,
.post-content {
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.7;
}

.site-footer {
  text-align: center;
  padding-top: 2rem;
  color: var(--text-tertiary);
  font-size: 0.95rem;
}

.blog-post {
  animation: fadeIn 0.6s ease;
}

.article-title {
  font-family: "Crimson Pro", serif;
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.post-content p,
.post-content ul,
.post-content ol {
  margin-bottom: 1.5rem;
}

.post-content h2 {
  font-family: "Crimson Pro", serif;
  font-size: 1.8rem;
  font-weight: 600;
  margin: 2.5rem 0 1rem;
  color: var(--text-primary);
}

.post-content h3 {
  font-family: "Crimson Pro", serif;
  font-size: 1.4rem;
  font-weight: 600;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}

.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

.post-content code {
  background-color: #f5f5f0;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  font-family: "Courier New", monospace;
  font-size: 0.95em;
}

.archive-item {
  margin-bottom: 1.5rem;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .site-nav ul {
    gap: 1rem;
  }

  .shell {
    padding: calc(var(--nav-height) + 1.25rem) 1.5rem 2rem;
  }

  .post-item {
    grid-template-columns: 1fr;
    gap: 0.15rem;
    padding: 0.8rem 0;
  }

  .post-item h2 {
    font-size: 1.15rem;
  }

  .article-title {
    font-size: 1.35rem;
  }

  .post-content {
    font-size: 0.94rem;
  }
}