/**
 * Simple SPA Styles
 * Clean, modern styling for a minimal single-page application
 */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

/* Navigation Styles */
nav {
  background: white;
  padding: 1rem;
  margin-bottom: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav a {
  text-decoration: none;
  color: #333;
  padding: 0.5rem 1rem;
  margin-right: 1rem;
  border-radius: 4px;
  transition: background 0.2s;
}

nav a:hover {
  background: #f0f0f0;
}

nav a.active {
  background: #4CAF50;
  color: white;
}

/* Main Content Styles */
main {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  min-height: 400px;
}

/* Typography */
h1 {
  color: #4CAF50;
  margin-bottom: 1rem;
}

h2 {
  color: #333;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

ul {
  margin-left: 2rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

code {
  background: #f4f4f4;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

strong {
  color: #222;
  font-weight: 600;
}

/* Footer Styles */
footer {
  text-align: center;
  margin-top: 2rem;
  padding: 1rem;
  color: #666;
  font-size: 0.9rem;
}

/* Link Styles */
a {
  color: #4CAF50;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #45a049;
  text-decoration: underline;
}

/* Sub-pages Navigation */
.sub-pages-nav {
  list-style: none;
  margin-left: 0;
  padding: 1rem;
  background: #f9f9f9;
  border-radius: 8px;
  margin-top: 1.5rem;
}

.sub-pages-nav li {
  margin-bottom: 0.75rem;
}

.sub-pages-nav li:last-child {
  margin-bottom: 0;
}

.sub-pages-nav a {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: white;
  border-radius: 4px;
  border: 1px solid #e0e0e0;
  transition: all 0.2s;
}

.sub-pages-nav a:hover {
  background: #4CAF50;
  color: white;
  border-color: #4CAF50;
  text-decoration: none;
  transform: translateX(5px);
}

/* Code blocks */
pre {
  background: #2d2d2d;
  color: #f8f8f2;
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 1rem;
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }

  nav a {
    display: inline-block;
    margin-bottom: 0.5rem;
  }

  main {
    padding: 1.5rem;
  }
}