/* ── TABLE OF CONTENTS ───────────────────────────────────────────────── */

/* Desktop: pull the sidebar out of normal flow so it floats to the right
   of the article without affecting the max-w-3xl layout                  */
@media (min-width: 1280px) {
  #toc-panel {
    position: fixed;
    top: 7rem;
    /* sit just outside the 3xl container (~768px) + breathing room */
    left: calc(50% + 400px);
    width: 13rem;
    max-height: calc(100vh - 9rem);
  }
}

/* ── TOC link base ──────────────────────────────────────────────────── */
.toc-link {
  display: block;
  font-size: 0.78rem;
  line-height: 1.5;
  padding: 0.25rem 0.5rem;
  border-radius: 0.5rem;
  color: #7f849c;               /* ctp-overlay1 */
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  border-left: 2px solid transparent;
  text-decoration: none;
  word-break: break-word;
}
.toc-link:hover {
  color: #b4befe;               /* ctp-lavender */
  background: rgba(180, 190, 254, 0.06);
}

/* Active link */
.toc-link.toc-active {
  color: #b4befe;
  border-left-color: #b4befe;
  background: rgba(180, 190, 254, 0.08);
  font-weight: 500;
}

/* ── Hierarchy indentation ──────────────────────────────────────────── */
.toc-h1 { padding-left: 0.5rem;  font-weight: 600; font-size: 0.8rem; }
.toc-h2 { padding-left: 1rem; }
.toc-h3 { padding-left: 1.75rem; font-size: 0.74rem; }
.toc-h4 { padding-left: 2.5rem;  font-size: 0.72rem; }

/* ── Mobile drawer open state ───────────────────────────────────────── */
#toc-panel.toc-open {
  transform: translateY(0) !important;
}
#toc-backdrop.toc-open {
  opacity: 1 !important;
  pointer-events: auto !important;
}

/* ── TOC nav scrollbar ──────────────────────────────────────────────── */
#toc-nav::-webkit-scrollbar       { width: 3px; }
#toc-nav::-webkit-scrollbar-track { background: transparent; }
#toc-nav::-webkit-scrollbar-thumb { background: #313244; border-radius: 2px; }
#toc-nav::-webkit-scrollbar-thumb:hover { background: #45475a; }

/* ── Reading-progress strip ─────────────────────────────────────────── */
#toc-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, #cba6f7, #b4befe);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.1s linear;
  z-index: 60;
}