/* Reference-style collapsible sidebar: expanded menu panel, collapsed icon rail. */
:root {
  --sidebar-expanded-width: 216px;
  --sidebar-collapsed-width: 44px;
  --sidebar-active: #4db6f2;
  --sidebar-blue: #1677ff;
}

.app-shell {
  grid-template-columns: var(--sidebar-expanded-width) minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 0;
  overflow: hidden auto;
  background: #ffffff;
  color: #111827;
  border-right: 1px solid #e5e7eb;
  box-shadow: 2px 0 8px rgba(15, 23, 42, 0.05);
}

.brand {
  min-height: 58px;
  padding: 12px 48px 10px 14px;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 8px;
  border-bottom: 1px solid #eef0f4;
}

.brand .brand-logo {
  width: 42px;
  height: 42px;
}

.brand strong {
  color: var(--sidebar-blue);
  font-size: 14px;
  font-weight: 600;
}

.brand span {
  color: #64748b;
}

.sidebar-toggle {
  position: absolute;
  top: 18px;
  right: 8px;
  width: 34px;
  min-height: 30px;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  place-items: center;
  border: 1px solid #dbe3ef;
  border-radius: 2px;
  background: #ffffff;
  color: #111827;
}

.sidebar-toggle span:not(.nav-icon) {
  display: none;
}

.sidebar-toggle:hover {
  border-color: var(--sidebar-blue);
  background: #f8fbff;
  color: var(--sidebar-blue);
}

.nav {
  margin-top: 6px;
  padding: 0 10px 14px;
}

.nav-group {
  width: calc(100% - 16px);
  margin: 11px 8px 6px;
  padding: 2px 4px;
  border: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: #6b7280;
  background: transparent;
  font-size: 13px;
  font-weight: 600;
  line-height: 24px;
  text-align: left;
  cursor: pointer;
}

.nav-group:hover {
  color: #111827;
}

.nav-group-sign {
  width: 18px;
  height: 18px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 18px;
  border: 1px solid #d8dee8;
  border-radius: 3px;
  color: #64748b;
  background: #ffffff;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
}

.nav-group:hover .nav-group-sign {
  border-color: #94a3b8;
  color: #111827;
}

.nav-item.nav-section-collapsed {
  display: none;
}

.nav-item {
  min-height: 38px;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 8px;
  padding: 0 14px;
  margin: 2px 0;
  border-radius: 4px;
  color: #111827;
  background: #ffffff;
  font-size: 13px;
  font-weight: 500;
}

.nav-item span:not(.nav-icon) {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-icon,
.nav-icon .icon-svg,
.nav-icon > svg {
  color: #64748b;
}

.nav-item:hover,
.nav-item.active {
  background: var(--sidebar-active);
  color: #ffffff;
}

.nav-item.active .nav-icon,
.nav-item:hover .nav-icon,
.nav-item.active .nav-icon .icon-svg,
.nav-item:hover .nav-icon .icon-svg {
  color: #ffffff;
}

.sidebar-collapsed .app-shell {
  grid-template-columns: var(--sidebar-collapsed-width) minmax(0, 1fr);
}

.sidebar-collapsed .sidebar {
  width: var(--sidebar-collapsed-width);
  overflow: hidden;
  box-shadow: 2px 0 8px rgba(15, 23, 42, 0.05);
}

.sidebar-collapsed .brand,
.sidebar-collapsed .nav,
.sidebar-collapsed .nav-group {
  display: none;
}

.sidebar-collapsed .sidebar-toggle {
  position: static;
  width: var(--sidebar-collapsed-width);
  min-height: 42px;
  margin: 14px 0 0;
  border: 0;
  border-radius: 0;
  background: #ffffff;
  color: #111827;
}

.sidebar-collapsed .sidebar-toggle:hover {
  background: #f3f7fb;
  color: var(--sidebar-blue);
}

.table-scrollbar {
  left: calc(var(--sidebar-expanded-width) + 8px);
}

.sidebar-collapsed .table-scrollbar {
  left: calc(var(--sidebar-collapsed-width) + 8px);
}