@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&display=swap');

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #222;
  background: #fff;
}

a {
  color: #222;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Homepage */
.home {
  max-width: 600px;
  margin: 0 auto;
  padding: 60px 20px;
}

.home-intro {
  margin-bottom: 40px;
  font-size: 18px;
  line-height: 1.7;
}

.home-posts {
  list-style: none;
}

.home-posts li {
  margin-bottom: 12px;
}

.home-posts a {
  font-size: 17px;
}

/* Post layout */
.post-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 220px;
  flex-shrink: 0;
  padding: 40px 20px;
  border-right: 1px solid #eee;
  font-size: 13px;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-title {
  font-weight: 500;
  margin-bottom: 16px;
  font-size: 14px;
}

.sidebar-list {
  list-style: none;
}

.sidebar-list li {
  margin-bottom: 8px;
}

.sidebar-list a {
  color: #666;
}

.sidebar-list a:hover {
  color: #222;
}

.sidebar-list a.active {
  color: #222;
  font-weight: 500;
}

/* Main content */
.main {
  flex: 1;
  margin-left: 220px;
  padding: 60px 40px;
  max-width: 800px;
}

.post-title {
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 32px;
  line-height: 1.3;
}

.post-content {
  font-size: 17px;
  line-height: 1.8;
}

.post-content p {
  margin-bottom: 1.5em;
}

.post-content h2 {
  font-size: 22px;
  font-weight: 500;
  margin-top: 2em;
  margin-bottom: 1em;
}

.post-content h3 {
  font-size: 18px;
  font-weight: 500;
  margin-top: 1.5em;
  margin-bottom: 0.75em;
}

.post-content blockquote {
  border-left: 3px solid #ddd;
  padding-left: 20px;
  margin: 1.5em 0;
  color: #555;
}

/* Navigation */
.post-nav {
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}

.post-nav a {
  color: #666;
}

.post-nav a:hover {
  color: #222;
}

.post-nav-position {
  color: #999;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1000;
  background: #fff;
  border: 1px solid #ddd;
  padding: 8px 12px;
  font-size: 18px;
  cursor: pointer;
  border-radius: 4px;
}

/* Mobile styles */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
    background: #fff;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main {
    margin-left: 0;
    padding: 80px 20px 40px;
  }

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

  .post-content {
    font-size: 16px;
  }
}