.nav-group {
  display: flex;
  flex-direction: column;
  gap: .28rem;
}

.sidebar-collapse {
  position: absolute;
  top: 1.65rem;
  right: -.8rem;
  z-index: 5;
  display: grid;
  place-items: center;
  width: 1.7rem;
  height: 1.7rem;
  padding: 0;
  border: 1px solid #ffffff2b;
  border-radius: 50%;
  color: #fff;
  background: #404040;
  box-shadow: 0 5px 14px #0004;
  font-size: 1.15rem;
  line-height: 1;
  cursor: pointer;
}

.sidebar-collapse:hover { background: #660000; }
.navigation .nav-icon { flex: 0 0 1.55rem; width: 1.55rem; font-size: 1.05rem; line-height: 1; }
.navigation .nav-text { display: block; flex: 1 1 auto; width: auto; min-width: 0; overflow: hidden; text-align: left; text-overflow: ellipsis; white-space: nowrap; }
.app-shell,.sidebar { transition: grid-template-columns .2s ease, width .2s ease, padding .2s ease; }
.app-shell.sidebar-collapsed { grid-template-columns: 82px minmax(0,1fr); }
.sidebar-collapsed .sidebar { padding-inline: .7rem; }
.sidebar-collapsed .sidebar-brand { justify-content: center; padding-inline: 0; }
.sidebar-collapsed .sidebar-brand img { width: 48px; height: 36px; }
.sidebar-collapsed .sidebar-brand span,.sidebar-collapsed .nav-text,.sidebar-collapsed .nav-label { display: none; }
.sidebar-collapsed .navigation button { justify-content: center; padding-inline: .55rem; }
.sidebar-collapsed .navigation .nav-icon { width: 1.55rem; }

@media (max-width: 800px) {
  .sidebar-collapse { display: none; }
  .app-shell.sidebar-collapsed { grid-template-columns: 1fr; }
  .sidebar-collapsed .sidebar-brand span,.sidebar-collapsed .nav-text,.sidebar-collapsed .nav-label { display: initial; }
}