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

:root {
  --color-bg: #ffffff;
  --color-text: #333333;
  --color-text-muted: #666666;
  --color-accent: #0073aa;
  --color-accent-hover: #005177;
  --color-border: #e0e0e0;
  --color-surface: #f7f7f7;
  --font-body:
    "Libre Franklin", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading:
    "Libre Franklin", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 740px;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 2rem 0;
  text-align: center;
}
.site-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.site-title a {
  color: var(--color-text);
}
.site-title a:hover {
  text-decoration: none;
}
.site-description {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

/* Navigation */
.site-nav {
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
  text-align: center;
}
.site-nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  text-decoration: none;
}

/* Content */
.site-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.page-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.site-content p {
  margin-bottom: 1.25rem;
}

/* Reading list */
.reading-list {
  list-style: disc;
  padding-left: 1.5rem;
}
.reading-list li {
  margin-bottom: 0.5rem;
}
.reading-list .book-title {
  font-style: italic;
}
.reading-list .book-author {
  color: var(--color-text-muted);
}

/* Contact */
.contact-info {
  margin-top: 1rem;
}
.contact-info a {
  display: inline-block;
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: 4rem;
}

/* Responsive */
@media (max-width: 600px) {
  .site-nav ul {
    gap: 1rem;
  }
  .site-content {
    padding: 2rem 1rem;
  }
  .site-title {
    font-size: 1.6rem;
  }
}