/* User Provided Stylesheet */

/* Custom styles for Optics Textbook */

/* Auto-expand all table of contents items in the left sidebar */
/* This keeps all navigation items visible without requiring clicks */

/* Target the navigation items in the primary sidebar */
.bd-sidebar-primary .toctree-l1 > .toc-toggle,
.bd-sidebar-primary .toctree-l2 > .toc-toggle,
.bd-sidebar-primary .toctree-l3 > .toc-toggle,
.bd-sidebar-primary .toctree-l4 > .toc-toggle {
  /* Hide the expand/collapse toggle icons */
  display: none;
}

/* Force all nested items to be visible */
.bd-sidebar-primary .toctree-l1 > ul,
.bd-sidebar-primary .toctree-l2 > ul,
.bd-sidebar-primary .toctree-l3 > ul,
.bd-sidebar-primary .toctree-l4 > ul {
  display: block !important;
  max-height: none !important;
}

/* Alternative selectors for book-theme specific classes */
nav.bd-docs-nav .nav-item .children,
nav.bd-docs-nav .nav-item > ul {
  display: block !important;
  max-height: none !important;
}

/* Hide toggle chevrons/icons */
nav.bd-docs-nav .nav-link .toc-toggle,
nav.bd-docs-nav button.toc-toggle {
  display: none;
}

/* Ensure all list items are visible */
.bd-sidebar .nav > .nav-item > .children {
  display: block !important;
}

/* For MyST book theme - expand all navigation items */
aside.bd-sidebar .bd-toc-item .bd-sidenav {
  display: block !important;
}

/* Keep the sidebar scrollable if content is too long */
.bd-sidebar-primary {
  overflow-y: auto;
  max-height: calc(100vh - 4rem);
}