/* Better page width and breathing room */
.content {
  max-width: 980px;
}

/* Headings: cleaner hierarchy */
h1, h2, h3 {
  letter-spacing: -0.01em;
}
h1 { font-weight: 800; }
h2 { font-weight: 700; margin-top: 2.0rem; }
h3 { font-weight: 700; margin-top: 1.4rem; }

/* Paragraph readability */
p, li {
  line-height: 1.6;
}

/* Make callouts look more “course-like” */
.callout {
  border-radius: 14px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}

/* Code blocks: nicer corners */
pre {
  border-radius: 14px;
}

/* Tables: cleaner */
table {
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border-radius: 14px;
}
table thead th {
  font-weight: 700;
}

/* Sidebar tweaks */
#quarto-sidebar {
  border-right: 1px solid rgba(0,0,0,0.08);
}
.sidebar-item-text {
  font-weight: 600;
}

/* Part titles (big chapter groups) */
.sidebar-item.sidebar-item-part > .sidebar-item-container > .sidebar-item-text {
  text-transform: none;
  letter-spacing: 0;
}