/* 
 * Minimal CSS for HTML Export
 * Optimized single-file CSS for fast loading
 */

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #1a202c;
  background-color: #ebf8ff;
}

/* Layout */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.content-wrapper {
  background-color: #f7fafc;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 2rem;
}

/* Typography */
h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #1a202c;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: #2d3748;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: #4a5568;
}

p {
  margin-bottom: 1rem;
  line-height: 1.75;
}

a {
  color: #2b6cb0;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Navigation */
nav {
  margin-bottom: 1.5rem;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: 0.25rem;
  margin: 1rem 0;
}

.figure {
  margin: 1.5rem 0;
  text-align: center;
}

.figure img {
  max-width: 100%;
  border-radius: 0.5rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.figure-caption {
  font-size: 0.875rem;
  color: #718096;
  margin-top: 0.5rem;
}

/* Lists */
ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Related Links */
.related-articles {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e2e8f0;
}

.related-articles h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.related-articles ul {
  list-style: disc;
  padding-left: 1.5rem;
}

/* Footer */
footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #e2e8f0;
  font-size: 0.875rem;
  color: #718096;
}

/* Utilities */
.text-center {
  text-align: center;
}

.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }

.pt-4 { padding-top: 1rem; }
.pt-6 { padding-top: 1.5rem; }
.pt-8 { padding-top: 2rem; }

.pb-4 { padding-bottom: 1rem; }
.pb-6 { padding-bottom: 1.5rem; }

.leading-relaxed {
  line-height: 1.625;
}

/* Responsive */
@media (max-width: 640px) {
  .container {
    padding: 1rem;
  }
  
  .content-wrapper {
    padding: 1rem;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.25rem;
  }
}