/* Highlight exercise sections */
.md-typeset .admonition.exercise,
.md-typeset details.exercise {
  border-color: #4CAF50;
}
.md-typeset .exercise > .admonition-title,
.md-typeset .exercise > summary {
  background-color: rgba(76, 175, 80, 0.1);
}
.md-typeset .exercise > .admonition-title::before,
.md-typeset .exercise > summary::before {
  background-color: #4CAF50;
}

/* Code block improvements */
.md-typeset pre {
  border-radius: 6px;
}

/* Chapter navigation spacing */
.md-typeset h2 {
  margin-top: 2em;
}