/* Reset and base styles */
* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  color: #333;
}

/* Layout */
.site-header {
  background: #f8f9fa;
  padding: 1rem 0;
  border-bottom: 1px solid #e9ecef;
}

.site-header nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.5rem;
  font-weight: bold;
  text-decoration: none;
  color: #333;
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1rem;
}

.nav-links a {
  text-decoration: none;
  color: #666;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.nav-links a:hover {
  background-color: #e9ecef;
  color: #333;
}

.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
  min-height: calc(100vh - 120px);
}

.site-footer {
  background: #f8f9fa;
  text-align: center;
  padding: 1rem;
  border-top: 1px solid #e9ecef;
  color: #666;
  font-size: 0.9rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: 1rem;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
  margin-bottom: 1rem;
}

/* Links */
a {
  color: #0066cc;
}

a:hover {
  color: #004499;
}

/* Code */
code {
  background: #f8f9fa;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header nav {
    flex-direction: column;
    gap: 1rem;
  }
  
  .main-content {
    padding: 1rem;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
}