/* App Shell Grid */
.sys-app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Sidebar Styling */
.sys-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width-expanded);
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, width 0.3s ease;
}

.sys-sidebar-brand {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 16px;
  border-bottom: 1px solid var(--color-border);
  gap: 12px;
}

.sys-sidebar-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.sys-sidebar-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sys-sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sys-nav-item {
  display: flex;
  align-items: center;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.925rem;
  transition: var(--transition-fast);
  gap: 12px;
  width: 100%;
}

.sys-nav-item:hover {
  background-color: rgba(var(--color-primary-rgb), 0.08);
  color: var(--color-primary);
}

.sys-nav-item.active {
  background-color: var(--color-primary);
  color: var(--color-secondary);
}

.sys-nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Sidebar Accordion / Submenu */
.sys-nav-group {
  display: flex;
  flex-direction: column;
}

.sys-nav-trigger {
  justify-content: space-between;
  cursor: pointer;
}

.sys-submenu {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding-left: 32px;
  margin-top: 2px;
}

.sys-nav-group.open .sys-submenu {
  display: flex;
}

.sys-nav-group.open .sys-nav-trigger .sys-chevron-icon {
  transform: rotate(180deg);
}

.sys-submenu-item {
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.sys-submenu-item:hover {
  color: var(--color-primary);
  background-color: rgba(var(--color-primary-rgb), 0.05);
}

/* Sidebar User Info Card Footer */
.sys-sidebar-user {
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Collapsed State (Desktop) */
.sys-app-container.sidebar-collapsed .sys-sidebar {
  width: var(--sidebar-width-collapsed);
}

.sys-app-container.sidebar-collapsed .sys-sidebar-title,
.sys-app-container.sidebar-collapsed .sys-nav-text,
.sys-app-container.sidebar-collapsed .sys-sidebar-user .sys-user-info-text {
  display: none;
}

.sys-app-container.sidebar-collapsed .sys-main-content {
  margin-left: var(--sidebar-width-collapsed);
}

.sys-app-container.sidebar-collapsed .sys-header,
.sys-app-container.sidebar-collapsed .sys-footer {
  left: var(--sidebar-width-collapsed);
}

/* Main Content Area */
.sys-main-content {
  flex: 1;
  margin-left: var(--sidebar-width-expanded);
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: margin-left 0.3s ease;
}

/* Header Topbar (Fixed) */
.sys-header {
  height: var(--header-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: fixed;
  top: 0;
  right: 0;
  left: var(--sidebar-width-expanded);
  z-index: 90;
  transition: left 0.3s ease;
}

.sys-header-left, .sys-header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Header Collapsible Navigation & Menus */
.sys-header-menu {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sys-header-dropdown {
  position: relative;
}

.sys-header-menu-btn,
.sys-header-user-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text-main);
  transition: var(--transition-fast);
}

.sys-header-menu-btn:hover,
.sys-header-user-btn:hover {
  background-color: var(--color-bg-light);
}

.sys-chevron-icon {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.sys-header-dropdown.active .sys-chevron-icon {
  transform: rotate(180deg);
}

.sys-header-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  min-width: 180px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px 0;
  z-index: 1000;
}

.sys-header-dropdown-menu.sys-dropdown-right {
  left: auto;
  right: 0;
}

.sys-header-dropdown.active .sys-header-dropdown-menu {
  display: block;
}

.sys-header-dropdown-item {
  display: block;
  padding: 8px 16px;
  font-size: 0.875rem;
  color: var(--color-text-main);
  transition: var(--transition-fast);
}

.sys-header-dropdown-item:hover {
  background-color: rgba(var(--color-primary-rgb), 0.08);
  color: var(--color-primary);
}

.sys-dropdown-divider {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: 6px 0;
}

.sys-text-danger {
  color: var(--color-danger);
}

/* User Avatar & Info */
.sys-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.sys-user-info-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.2;
}

.sys-user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.sys-user-role {
  font-size: 0.725rem;
  color: var(--color-text-muted);
}

.sys-toggle-btn {
  padding: 8px;
  border-radius: var(--radius-sm);
  color: var(--color-text-main);
  transition: var(--transition-fast);
}

.sys-toggle-btn:hover {
  background-color: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
}

.sys-portal-badge {
  background-color: rgba(var(--color-tertiary-rgb), 0.2);
  color: var(--color-text-main);
  border: 1px solid var(--color-tertiary);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* Body Container Clearances */
.sys-page-body {
  padding: 24px;
  padding-top: calc(var(--header-height) + 24px);
  padding-bottom: 70px;
  flex: 1;
}

/* Footer Topbar (Fixed) */
.sys-footer {
  padding: 16px 24px;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  position: fixed;
  bottom: 0;
  right: 0;
  left: var(--sidebar-width-expanded);
  z-index: 80;
  transition: left 0.3s ease;
}

/* Mobile Responsiveness */
@media (max-width: 767.98px) {
  .sys-sidebar {
    transform: translateX(-100%);
  }

  .sys-app-container.mobile-open .sys-sidebar {
    transform: translateX(0);
  }

  .sys-main-content {
    margin-left: 0 !important;
  }

  .sys-header, .sys-footer {
    left: 0 !important;
  }

  .sys-header-menu {
    display: none;
  }

  .sys-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 95;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .sys-app-container.mobile-open .sys-overlay {
    opacity: 1;
    pointer-events: auto;
  }
}