.layout-wrapper {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width-expanded);
  min-width: var(--sidebar-width-expanded);
  background: var(--color-bg-sidebar);
  flex-shrink: 0;
  z-index: 1040;
  transition: width var(--transition-slow), min-width var(--transition-slow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
}

.sidebar.collapsed .brand-text,
.sidebar.collapsed .user-detail,
.sidebar.collapsed .nav-link span,
.sidebar.collapsed .nav-section-title,
.sidebar.collapsed .arrow,
.sidebar.collapsed .sidebar-footer span {
  display: none;
}

.sidebar.collapsed .nav-group-title {
  border-top: none;
  padding-top: var(--spacing-3);
  margin-top: 0;
}

.sidebar.collapsed .sidebar-user .user-info {
  justify-content: center;
}

.sidebar.collapsed .sidebar-user .user-info i {
  margin-right: 0;
  font-size: 1.5rem;
}

.sidebar.collapsed .nav-link {
  justify-content: center;
  padding: var(--spacing-3);
}

.sidebar.collapsed .nav-link i:first-child {
  margin-right: 0;
  font-size: var(--font-size-lg);
}

.sidebar.collapsed .sidebar-brand {
  justify-content: center;
}

.sidebar.collapsed .sidebar-brand i {
  margin-right: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-sidebar);
  min-height: 3.5rem;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  color: #ffffff;
  text-decoration: none;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
}

.sidebar-brand i {
  font-size: 1.5rem;
  margin-right: var(--spacing-2);
}

.sidebar-brand:hover {
  color: #ffffff;
}

.sidebar-title {
  color: #ffffff;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-2xl);
  margin: 0 0 0.25rem 0;
  letter-spacing: 0.02em;
}

.sidebar-subtitle {
  color: var(--color-text-sidebar);
  font-size: var(--font-size-xs);
  margin: 0;
  opacity: 0.9;
}

.sidebar-user {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 1px solid var(--color-border-sidebar);
}

.user-info {
  display: flex;
  align-items: center;
}

.user-info>i {
  font-size: 2rem;
  margin-right: var(--spacing-3);
  color: var(--color-primary-light);
}

.user-detail {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-name {
  font-weight: var(--font-weight-semibold);
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: var(--font-size-xs);
  color: var(--color-text-sidebar);
  white-space: nowrap;
}

.sidebar-nav {
  flex-grow: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-2) 0;
  margin-top: var(--spacing-2);
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
}

.sidebar-nav .nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-section-title {
  padding: var(--spacing-3) var(--spacing-4) var(--spacing-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-sidebar);
  opacity: 0.7;
  white-space: nowrap;
  overflow: hidden;
}

.nav-item {
  list-style: none;
  margin-bottom: 0.125rem;
}

.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  color: #ffffff;
  padding: var(--spacing-3) var(--spacing-4);
  border-left: 3px solid transparent;
  font-size: 0.875rem;
  font-weight: var(--font-weight-normal);
  text-decoration: none;
  transition: all var(--transition-normal);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  white-space: nowrap;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.nav-link i:first-child {
  font-size: var(--font-size-base);
  margin-right: var(--spacing-3);
  width: 1.25rem;
  text-align: center;
  flex-shrink: 0;
}

.nav-link span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-link .arrow {
  font-size: 0.7rem;
  transition: transform var(--transition-normal);
  margin-left: auto;
  flex-shrink: 0;
}

.nav-link[aria-expanded="true"] .arrow {
  transform: rotate(180deg);
}

.sidebar-nav .nav-link:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-text-sidebar-hover);
  border-left-color: var(--color-primary-light);
}

.sidebar-nav .nav-link.active {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--color-text-sidebar-hover);
  border-left-color: var(--color-primary-light);
  font-weight: var(--font-weight-medium);
}

.nav-sub {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-sub .nav-link {
  padding-left: 2.5rem;
  font-size: 0.8125rem;
}

.nav-sub .nav-sub .nav-link {
  padding-left: 3.5rem;
}

.nav-sub .nav-sub .nav-sub .nav-link {
  padding-left: 4.5rem;
}

.nav-link.nav-group-title {
  font-weight: var(--font-weight-semibold);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: calc(var(--spacing-3) + var(--spacing-2));
  margin-top: var(--spacing-1);
}

.nav-item.has-submenu>.nav-link.nav-group-title:first-child {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: calc(var(--spacing-3) + var(--spacing-2));
}

.nav-item.has-submenu:first-child>.nav-link.nav-group-title {
  border-top: none;
  padding-top: var(--spacing-3);
  margin-top: 0;
}

.nav-group-sub {
  list-style: none;
}

.nav-group-sub>.nav-link {
  padding-left: 2.5rem;
  font-size: 0.8125rem;
  font-weight: var(--font-weight-medium);
}

.nav-divider {
  height: 1px;
  background-color: rgba(255, 255, 255, 0.1);
  margin: var(--spacing-1) var(--spacing-4);
}

.sidebar-footer {
  padding: var(--spacing-3) var(--spacing-4);
  border-top: 1px solid var(--color-border-sidebar);
}

.sidebar-footer .nav-link {
  color: var(--color-danger);
}

.sidebar-footer .nav-link:hover {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1035;
}

.sidebar-overlay.show {
  display: block;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width-expanded);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-slow);
  background-color: var(--color-bg-secondary);
}

.layout-wrapper>.main-content:first-child {
  margin-left: 0;
}

.sidebar.collapsed~.sidebar-overlay+.main-content,
.sidebar.collapsed+.sidebar-overlay+.main-content {
  margin-left: var(--sidebar-width);
}

.top-bar {
  display: flex;
  align-items: center;
  padding: var(--spacing-2) var(--spacing-4);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  min-height: 3rem;
  position: sticky;
  top: 0;
  z-index: 1020;
  box-shadow: var(--shadow-sm);
}

.sidebar-toggle-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
  line-height: 1;
}

.sidebar-toggle-btn:hover {
  background-color: var(--color-bg-hover);
}

.top-bar-title {
  flex: 1;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-left: var(--spacing-2);
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.user-badge {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.user-badge i {
  color: var(--color-primary);
}

.content-area {
  flex: 1;
  padding: var(--spacing-5);
  font-size: var(--font-size-body);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
  overflow-y: auto;
}

.content-area>.container,
.content-area>.container-fluid {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}

.content-area h3 {
  font-size: var(--font-size-page-title);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-3);
}

.page-header {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-3) var(--spacing-5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.page-title {
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
  letter-spacing: -0.01em;
}

.user-info-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    width: var(--sidebar-width-expanded);
    min-width: var(--sidebar-width-expanded);
  }

  .sidebar.show {
    transform: translateX(0);
  }

  .sidebar.collapsed {
    width: var(--sidebar-width-expanded);
    min-width: var(--sidebar-width-expanded);
  }

  .sidebar.collapsed .brand-text,
  .sidebar.collapsed .user-detail,
  .sidebar.collapsed .nav-link span,
  .sidebar.collapsed .nav-section-title,
  .sidebar.collapsed .arrow,
  .sidebar.collapsed .sidebar-footer span {
    display: inline;
  }

  .sidebar.collapsed .sidebar-user .user-info {
    justify-content: flex-start;
  }

  .sidebar.collapsed .sidebar-user .user-info i {
    margin-right: var(--spacing-3);
    font-size: 2rem;
  }

  .sidebar.collapsed .nav-link {
    justify-content: flex-start;
    padding: var(--spacing-2) var(--spacing-4);
  }

  .sidebar.collapsed .nav-link i:first-child {
    margin-right: var(--spacing-3);
    font-size: var(--font-size-base);
  }

  .sidebar.collapsed .sidebar-brand {
    justify-content: flex-start;
  }

  .sidebar.collapsed .sidebar-brand i {
    margin-right: var(--spacing-2);
  }

  .main-content {
    margin-left: 0;
  }

  .sidebar.collapsed+.sidebar-overlay+.main-content {
    margin-left: 0;
  }

  .main-content-wrapper {
    margin-left: 0;
  }

  .page-header {
    padding: var(--spacing-3);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    box-shadow: var(--shadow-xl);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    padding: var(--spacing-3);
  }

  .page-title {
    font-size: var(--font-size-lg);
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .sidebar {
    width: 14rem;
  }

  :root {
    --sidebar-width-expanded: 14rem;
  }
}