.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
  transition: grid-template-columns var(--transition-base);
}

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

/* Sidebar */
.sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--sidebar-border);
  padding: var(--space-5) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) 0 var(--space-3);
}

.sidebar__logo {
  width: 200px;
  max-width: 60%;
  height: auto;
  object-fit: contain;
  transition: width var(--transition-base);
}

.sidebar__nav {
  flex: 1;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--sidebar-text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  white-space: nowrap;
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-item svg {
  color: var(--sidebar-text-muted);
  transition: color var(--transition-fast);
}

.nav-item:hover {
  background: var(--sidebar-hover-bg);
  color: var(--sidebar-text-primary);
}

.nav-item:hover svg {
  color: var(--accent);
}

.nav-item.is-active {
  background: var(--accent);
  color: var(--accent-contrast);
}

.nav-item.is-active svg {
  color: var(--accent-contrast);
}

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

.nav-item__chevron {
  transition: transform var(--transition-fast);
  color: var(--sidebar-text-muted);
}

.nav-group.is-open > .nav-group__toggle .nav-item__chevron {
  transform: rotate(90deg);
}

.nav-group__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-1) 0 var(--space-2) var(--space-6);
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  pointer-events: none;
  transition: max-height var(--transition-base);
}

.nav-group.is-open > .nav-group__list {
  visibility: visible;
  pointer-events: auto;
  max-height: 340px;
}

.nav-subitem {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--sidebar-text-muted);
  font-size: 0.82rem;
  text-align: left;
}

.nav-subitem:hover {
  background: var(--sidebar-hover-bg);
  color: var(--sidebar-text-primary);
}

.nav-subitem.is-active {
  color: var(--accent);
  font-weight: 700;
}

/* Subgrupo dentro de um módulo (3º nível: módulo > subgrupo > ferramenta) */
.nav-subgroup__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  font-weight: 700;
  border-bottom: 1px solid var(--sidebar-border);
  border-radius: 0;
}

.nav-subgroup.is-open > .nav-subgroup__toggle .nav-item__chevron {
  transform: rotate(90deg);
}

.nav-subgroup__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-1) 0 var(--space-2) var(--space-4);
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  pointer-events: none;
  transition: max-height var(--transition-base);
}

.nav-subgroup.is-open > .nav-subgroup__list {
  visibility: visible;
  pointer-events: auto;
  max-height: 160px;
}

.nav-subitem--tool {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-subitem--tool svg {
  color: var(--sidebar-text-muted);
  flex-shrink: 0;
}

/* Linha com o item de navegação + botão de favoritar. padding-right aqui
   repõe o padding-right que o .nav-item perde visualmente ao ser encurtado
   por flex:1 — sem isso, o .fav-toggle fica encostado na borda da sidebar,
   enquanto itens sem estrela (ex.: toggles de grupo) mantêm o respiro do
   próprio padding do .nav-item. */
.nav-item-row {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding-right: var(--space-3);
}

.nav-item-row > .nav-item,
.nav-item-row > .nav-subitem {
  flex: 1;
  min-width: 0;
}

.fav-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sidebar-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.fav-toggle:hover {
  color: var(--gold-400);
  background: var(--sidebar-hover-bg);
}

.fav-toggle.is-favorite {
  color: var(--gold-400);
}

.fav-toggle.is-favorite svg {
  fill: currentColor;
}

.badge-restricted {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gold-400);
  border: 1px solid var(--gold-400);
  border-radius: var(--radius-pill);
  padding: 1px 6px;
}

/* Sidebar colapsada: esconde texto, mantém ícones */
.app-shell.is-collapsed .nav-item__label,
.app-shell.is-collapsed .nav-item__chevron,
.app-shell.is-collapsed .nav-group__list,
.app-shell.is-collapsed .badge-restricted,
.app-shell.is-collapsed .fav-toggle {
  display: none;
}

.app-shell.is-collapsed .nav-item {
  justify-content: center;
}

.app-shell.is-collapsed .sidebar__logo {
  width: 44px;
}

.app-shell.is-collapsed .nav-item-row {
  padding-right: 0;
}

/* Tooltip com o nome da ferramenta, mostrado ao passar o mouse sobre um
   ícone da sidebar colapsada. Fica em document.body (não dentro de
   .sidebar, que tem overflow-x:hidden e cortaria um elemento posicionado
   fora da faixa da sidebar), posicionado via JS com getBoundingClientRect. */
.sidebar-tooltip {
  position: fixed;
  transform: translateY(-50%);
  z-index: 60;
  padding: var(--space-1) var(--space-3);
  background: var(--bg-sidebar);
  color: var(--sidebar-text-primary);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  pointer-events: none;
  animation: pidFadeIn var(--transition-fast);
}

/* Topbar */
.topbar {
  height: var(--topbar-height);
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-5);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar__title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-primary);
}

.topbar__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.main-content {
  min-width: 0;
}

.page-content {
  padding: var(--space-5);
  max-width: 1200px;
  margin: 0 auto;
  animation: pidFadeSlideUp 180ms ease;
}

/* Telas de aplicação (tudo exceto o "Principal"/portal.html) aproveitam melhor
   o espaço entre a sidebar e a borda da tela — a home continua com o limite
   padrão de 1200px, mais confortável de leitura pra uma grade de favoritos. */
.page-content.page-content--wide {
  max-width: 1600px;
}

@media (max-width: 1024px) {
  .app-shell {
    grid-template-columns: var(--sidebar-width-collapsed) 1fr;
  }

  .app-shell .nav-item__label,
  .app-shell .nav-item__chevron,
  .app-shell .nav-group__list,
  .app-shell .badge-restricted,
  .app-shell .fav-toggle {
    display: none;
  }

  .app-shell .nav-item {
    justify-content: center;
  }

  .app-shell .nav-item-row {
    padding-right: 0;
  }

  .app-shell .sidebar__logo {
    width: 44px;
  }

  .app-shell.is-expanded-mobile {
    grid-template-columns: var(--sidebar-width) 1fr;
  }

  .app-shell.is-expanded-mobile .sidebar__logo {
    width: 200px;
  }

  .app-shell.is-expanded-mobile .nav-item__label,
  .app-shell.is-expanded-mobile .nav-item__chevron,
  .app-shell.is-expanded-mobile .badge-restricted {
    display: inline;
  }

  .app-shell.is-expanded-mobile .fav-toggle {
    display: flex;
  }

  .app-shell.is-expanded-mobile .nav-item-row {
    padding-right: var(--space-3);
  }

  .app-shell.is-expanded-mobile .nav-group.is-open .nav-group__list {
    display: flex;
  }
}