/* =============================================================
   Sidebar Table of Contents — PaperMod Override
   Shows TOC as a sticky left sidebar on wide screens,
   falls back to default inline TOC on narrow screens.
   ============================================================= */

/* --- Layout wrapper --- */
.post-content-wrapper.has-sidebar-toc {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  max-width: calc(var(--main-width) + 280px + 2rem);
  position: relative;
}

/* --- Sidebar TOC --- */
.sidebar-toc {
  display: none; /* hidden on mobile by default */
}

/* --- Desktop: show sidebar --- */
@media (min-width: 1200px) {
  /* Widen the main container to make room */
  body:has(.has-sidebar-toc) .main {
    max-width: calc(var(--main-width) + 280px + var(--gap) * 2 + 2rem);
  }

  .sidebar-toc {
    display: block;
    position: sticky;
    top: calc(var(--header-height, 60px) + 1.5rem);
    width: 260px;
    min-width: 260px;
    max-height: calc(100vh - var(--header-height, 60px) - 3rem);
    overflow-y: auto;
    order: -1; /* place on the left */
    flex-shrink: 0;
    padding-right: 1rem;
  }

  /* Remove the collapsible <details> behavior on desktop — always open */
  .sidebar-toc .toc {
    background: transparent;
    border: none;
    border-radius: 0;
    border-right: 2px solid var(--border);
    padding: 0 1rem 0 0;
  }

  .sidebar-toc .toc details {
    pointer-events: none; /* prevent collapse */
  }

  .sidebar-toc .toc details > summary {
    display: none; /* hide the "Table of Contents" toggle */
  }

  .sidebar-toc .toc details[open] > .inner {
    display: block;
  }

  .sidebar-toc .toc details > .inner {
    display: block; /* always show */
    margin: 0;
    padding: 0;
  }

  .sidebar-toc .toc .inner ul {
    padding-inline-start: 1rem;
    margin: 0;
  }

  .sidebar-toc .toc .inner > ul {
    padding-inline-start: 0;
  }

  .sidebar-toc .toc .inner li {
    margin: 0.25rem 0;
    list-style: none;
  }

  .sidebar-toc .toc .inner a {
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--secondary);
    text-decoration: none;
    display: block;
    padding: 0.15rem 0;
    transition: color 0.2s ease, border-color 0.2s ease;
  }

  .sidebar-toc .toc .inner a:hover {
    color: var(--primary);
  }

  /* Active state — will be set by JS */
  .sidebar-toc .toc .inner a.toc-active {
    color: var(--primary);
    font-weight: 600;
  }

  /* The post content takes remaining space */
  .post-content-wrapper.has-sidebar-toc .post-content {
    flex: 1;
    min-width: 0;
  }

  /* Scrollbar styling for the sidebar */
  .sidebar-toc::-webkit-scrollbar {
    width: 4px;
  }

  .sidebar-toc::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
  }
}

/* --- Mobile: use default PaperMod inline TOC --- */
@media (max-width: 1199px) {
  .post-content-wrapper.has-sidebar-toc {
    display: block;
  }

  .sidebar-toc {
    display: block;
    margin-bottom: 1.5rem;
  }

  .sidebar-toc .toc {
    /* keep PaperMod's default collapsible style */
  }
}