/* Hide sidebar scrollbar across all browsers */
.sidebar,
.sidebar-nav,
.sidebar-content,
#quarto-sidebar,
#quarto-sidebar > * {
  overflow-y: auto;
  scrollbar-width: none !important; /* Firefox */
  -ms-overflow-style: none !important; /* IE/Edge legacy */
}

.sidebar::-webkit-scrollbar,
.sidebar-nav::-webkit-scrollbar,
.sidebar-content::-webkit-scrollbar,
#quarto-sidebar::-webkit-scrollbar {
  display: none !important;
  width: 0 !important;
}

/* Slim scrollbar on hover */
#quarto-sidebar:hover {
  scrollbar-width: thin;
}

#quarto-sidebar:hover::-webkit-scrollbar {
  display: block !important;
  width: 4px !important;
}

#quarto-sidebar:hover::-webkit-scrollbar-thumb {
  background-color: rgba(0,0,0,0.2);
  border-radius: 4px;
}
/* Desktop: float right */
.book-cover-float {
  float: right;
  margin: 0 0 1.5em 2.5em;
}

/* Mobile: centered, no float */
@media (max-width: 768px) {
  .book-cover-float {
    float: none;
    display: block;
    margin: 0 auto 1.5em auto;
    text-align: center;
  }

  .book-cover-float img {
    width: 80% !important;
    max-width: 300px;
  }
}