.app-shell {
  min-height: 100vh;
  min-height: 100dvh;
  padding-left: var(--sidebar-width);
  overflow: visible;
}

.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  position: fixed;
  inset: 0 auto 0 0;
  z-index: var(--z-sidebar);
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  border-right: var(--border-width) solid var(--color-sidebar-border);
  padding: var(--space-4);
  background: var(--color-sidebar);
  color: var(--color-sidebar-text);
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-sidebar-text);
  text-decoration: none;
}

.brand:hover {
  color: var(--color-sidebar-text);
}

.brand:focus-visible {
  border-radius: var(--radius-medium);
}

.brand-mark {
  width: var(--control-height);
  height: var(--control-height);
  flex: 0 0 var(--control-height);
  display: grid;
  place-items: center;
  color: var(--color-surface);
}

.brand-copy {
  min-width: 0;
  display: grid;
  line-height: 1.08;
}

.brand-copy strong {
  overflow-wrap: anywhere;
  color: var(--color-sidebar-text);
  font-size: 18px;
  font-weight: var(--font-weight-bold);
}

.brand-copy small {
  margin-top: 1px;
  color: var(--color-sidebar-text-muted);
  font-size: var(--font-size-body-small);
  font-weight: var(--font-weight-medium);
}

.sidebar-close {
  display: none;
  border-color: var(--color-sidebar-border);
  background: var(--color-sidebar-surface);
  color: var(--color-sidebar-text);
}

.sidebar-close:hover {
  border-color: var(--color-brand-border);
  background: var(--color-sidebar-hover);
  color: var(--color-sidebar-text);
}

.sidebar-environment {
  min-width: 0;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  align-items: center;
  gap: var(--space-2);
  border: var(--border-width) solid var(--color-sidebar-border);
  border-radius: var(--radius-medium);
  margin: var(--space-4) 0 var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-sidebar-surface);
  color: var(--color-sidebar-text-muted);
}

.sidebar-environment span,
.sidebar-environment small,
.sidebar-environment strong {
  min-width: 0;
  display: block;
}

.sidebar-environment small {
  color: var(--color-sidebar-text-muted);
  font-size: var(--font-size-meta);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
}

.sidebar-environment strong {
  margin-top: 2px;
  overflow-wrap: anywhere;
  color: var(--color-sidebar-text);
  font-size: var(--font-size-meta);
  line-height: var(--line-height-compact);
}

.sidebar-navigation {
  min-height: 0;
  overflow: hidden;
}

.nav-menu {
  height: 100%;
  display: grid;
  align-content: start;
  gap: var(--space-1);
  padding: 0 var(--space-1) var(--space-4) 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--color-sidebar-border) transparent;
}

.nav-section {
  margin: var(--space-4) var(--space-2) var(--space-1);
  color: var(--color-sidebar-text-muted);
  font-size: var(--font-size-meta);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-compact);
  text-transform: uppercase;
}

.nav-link {
  width: 100%;
  min-height: var(--control-height);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-medium);
  padding: var(--space-2) var(--space-3);
  color: var(--color-sidebar-text);
  font-size: var(--font-size-body-small);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-compact);
  text-decoration: none;
  transition:
    background-color var(--motion-fast) var(--motion-ease),
    border-color var(--motion-fast) var(--motion-ease),
    color var(--motion-fast) var(--motion-ease);
}

.nav-link:hover {
  border-color: var(--color-sidebar-border);
  background: var(--color-sidebar-hover);
  color: var(--color-sidebar-text);
}

.nav-link:focus-visible {
  outline-color: var(--color-brand-border);
}

.nav-link.is-active {
  border-color: var(--color-brand-border);
  background: var(--color-brand);
  color: var(--color-surface);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-small);
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  display: grid;
  place-items: center;
  color: currentColor;
  opacity: 0.9;
}

.nav-link.is-active .nav-icon {
  opacity: 1;
}

.sidebar-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-backdrop);
  background: var(--color-overlay);
  backdrop-filter: blur(2px);
}

.sidebar-backdrop[hidden] {
  display: none;
}

.content {
  min-width: 0;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--space-5) var(--space-6) var(--space-8);
}

.content-frame {
  width: min(100%, var(--content-max-width));
  min-width: 0;
  margin: 0 auto;
}

.topbar {
  min-height: var(--topbar-min-height);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: var(--space-6);
  border-bottom: var(--border-width) solid var(--color-divider);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
}

.topbar-mobile {
  display: none;
}

.topbar-title {
  min-width: 0;
}

.topbar-title-layout {
  align-items: flex-start;
  margin-bottom: 0;
}

.topbar-title h1 {
  margin-bottom: 0;
}

.topbar-context {
  margin: var(--space-1) 0 0;
  color: var(--color-text-primary);
  font-size: var(--font-size-body-small);
  font-weight: var(--font-weight-semibold);
  text-transform: capitalize;
}

.topbar-description {
  max-width: 760px;
  margin: var(--space-1) 0 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-body-small);
  line-height: var(--line-height-compact);
}

.topbar-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: flex-end;
  gap: var(--space-2);
}

.context-pill {
  min-height: var(--control-height);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-medium);
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-meta);
  box-shadow: var(--shadow-small);
}

.environment-pill {
  max-width: 320px;
  min-height: var(--control-height-small);
  border-color: var(--color-warning-border);
  background: var(--color-warning-background-subtle);
  color: var(--color-warning-text);
  font-weight: var(--font-weight-semibold);
  box-shadow: none;
}

.environment-pill span {
  overflow-wrap: anywhere;
}

.environment-label-short {
  display: none;
}

.user-pill > span {
  min-width: 0;
  display: grid;
}

.user-pill strong {
  max-width: 220px;
  overflow: hidden;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-pill small {
  color: var(--color-text-muted);
}

.topbar-logout {
  margin: 0;
}

.auth-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  background: var(--color-page-background);
}

.auth-content {
  width: min(440px, 100%);
}

.auth-card {
  padding: var(--space-8);
  box-shadow: var(--shadow-medium);
}

.auth-brand-lockup {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.auth-brand-lockup > span:last-child {
  display: grid;
}

.auth-brand-lockup strong {
  font-size: 20px;
}

.auth-brand-lockup small {
  color: var(--color-text-muted);
}

.auth-environment {
  margin-bottom: var(--space-4);
}

.auth-card .primary-button {
  width: 100%;
}

body.nav-drawer-open {
  overflow: hidden;
}

@media (min-width: 1024px) and (max-width: 1279px) {
  .topbar {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .topbar-meta {
    justify-content: flex-start;
  }

}

@media (max-width: 1023px) {
  .app-shell {
    padding-left: 0;
    overflow: visible;
  }

  .navigation-ready .sidebar {
    width: min(320px, calc(100vw - var(--space-12)));
    border-right-color: var(--color-sidebar-border);
    box-shadow: var(--shadow-large);
    transform: translateX(-102%);
    visibility: hidden;
    transition:
      transform var(--motion-normal) var(--motion-ease),
      visibility 0s linear var(--motion-normal);
  }

  .navigation-ready .sidebar.is-menu-open {
    transform: translateX(0);
    visibility: visible;
    transition:
      transform var(--motion-normal) var(--motion-ease),
      visibility 0s linear 0s;
  }

  .sidebar-close {
    display: inline-grid;
  }

  .content {
    height: auto;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-y: visible;
    padding: var(--space-4) var(--space-5) var(--space-8);
  }

  .topbar {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .topbar-mobile {
    display: flex;
    align-items: center;
    gap: var(--space-3);
  }

  .mobile-menu-toggle {
    display: inline-grid;
  }

  .topbar-mobile-brand {
    color: var(--color-text-primary);
    font-size: var(--font-size-body-small);
    font-weight: var(--font-weight-bold);
  }

  .topbar-meta {
    justify-content: flex-start;
  }

}

@media (max-width: 560px) {
  .content {
    padding: var(--space-3) var(--space-4) var(--space-6);
  }

  .topbar {
    margin-bottom: var(--space-4);
  }

  .topbar-meta {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .context-pill,
  .topbar-logout,
  .topbar-logout .button {
    width: 100%;
    max-width: none;
    justify-content: flex-start;
  }

  .user-pill strong {
    max-width: calc(100vw - 100px);
  }

  .environment-label-full {
    display: none;
  }

  .environment-label-short {
    display: inline;
  }

  .auth-shell {
    padding: var(--space-4);
  }

  .auth-card {
    padding: var(--space-5);
  }
}

@media (prefers-reduced-motion: reduce) {
  .navigation-ready .sidebar,
  .navigation-ready .sidebar.is-menu-open {
    transition: none;
  }
}