.auth-shell {
  align-items: center;
  display: grid;
  min-height: 100vh;
  padding: var(--space-3);
}

.auth-card {
  margin-inline: auto;
  max-width: 440px;
  width: 100%;
}

.app-header,
.site-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-3);
  justify-content: space-between;
  padding: 0.85rem clamp(1rem, 4vw, 2rem);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
}

.brand {
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  font-size: 1.1rem;
  font-weight: 900;
  min-height: 44px;
  text-decoration: none;
}

.app-nav,
.site-nav {
  align-items: center;
  display: flex;
  gap: 0.35rem;
  max-width: 100%;
  overflow-x: auto;
  padding-block: 0.15rem;
  scrollbar-width: thin;
}

.app-nav a,
.site-nav a,
.sidebar a {
  align-items: center;
  border-radius: 999px;
  color: var(--color-text);
  display: inline-flex;
  font-weight: 700;
  min-height: 40px;
  padding: 0.45rem 0.75rem;
  text-decoration: none;
  white-space: nowrap;
}

.app-nav a:hover,
.site-nav a:hover,
.sidebar a:hover,
.app-nav a[aria-current="page"],
.site-nav a[aria-current="page"],
.sidebar a[aria-current="page"] {
  background: var(--color-surface-strong);
  color: var(--color-primary);
}

.page-shell,
.hero,
.content-shell {
  display: grid;
  gap: var(--space-4);
  margin-inline: auto;
  max-width: 1120px;
  padding: clamp(1rem, 4vw, 2rem);
  width: 100%;
}

.public-shell {
  max-width: 760px;
}

.two-column {
  align-items: start;
  grid-template-columns: 1fr;
}

.narrow-shell {
  max-width: 760px;
}

.grid-cards,
.summary-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.app-shell {
  min-height: 100vh;
}

.sidebar {
  align-items: center;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding: 0.85rem clamp(1rem, 4vw, 2rem);
  position: sticky;
  top: 0;
  z-index: 20;
}

.page-header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
}

.app-shell,
.page-shell,
.hero {
  background: var(--color-background);
}


/* Sprint 11.2 — navegação unificada */
.brand-mark {
  color: var(--color-primary);
  font-size: 1.1rem;
  font-weight: 900;
  margin: 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-list {
  align-items: center;
  display: flex;
  gap: 0.35rem;
  margin: 0;
  max-width: 100%;
  overflow-x: auto;
  padding: 0;
}

.nav-button {
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--color-text);
  cursor: pointer;
  font-weight: 700;
  min-height: 40px;
  padding: 0.45rem 0.75rem;
  white-space: nowrap;
}

.nav-button:hover,
.nav-button:focus-visible,
.nav-list a.active {
  background: var(--color-surface-strong);
  color: var(--color-primary);
}

.content-header {
  display: flex;
  gap: var(--space-3);
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.content-header h1 { margin-bottom: 0.35rem; }

/* Navegação interna em sidebar retrátil */
.has-app-sidebar {
  --sidebar-width: 248px;
  --sidebar-collapsed-width: 76px;
  min-height: 100vh;
}

.app-sidebar {
  background: rgba(255, 255, 255, 0.98);
  border-right: 1px solid var(--color-border);
  bottom: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  left: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 1rem 0.75rem;
  position: fixed;
  top: 0;
  transition: width 220ms ease, transform 220ms ease, box-shadow 220ms ease;
  width: var(--sidebar-width);
  z-index: 40;
}

.app-sidebar-header {
  align-items: center;
  display: flex;
  gap: 0.5rem;
  justify-content: space-between;
  min-height: 44px;
}

.app-sidebar .brand {
  overflow: hidden;
  padding-inline: 0.65rem;
  white-space: nowrap;
}

.sidebar-toggle {
  align-items: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  color: var(--color-text);
  cursor: pointer;
  display: inline-flex;
  flex: 0 0 40px;
  font-size: 1.5rem;
  height: 40px;
  justify-content: center;
  line-height: 1;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.sidebar-toggle:hover,
.sidebar-toggle:focus-visible {
  background: var(--color-surface-strong);
  color: var(--color-primary);
}

.mobile-sidebar-toggle { display: none; }

.app-sidebar-nav {
  display: grid;
  gap: 0.35rem;
}

.app-sidebar-nav a {
  align-items: center;
  border-radius: 12px;
  color: var(--color-text);
  display: flex;
  font-weight: 700;
  gap: 0.85rem;
  min-height: 44px;
  overflow: hidden;
  padding: 0.65rem 0.8rem;
  text-decoration: none;
  white-space: nowrap;
}

.app-sidebar-nav a:hover,
.app-sidebar-nav a[aria-current="page"] {
  background: var(--color-surface-strong);
  color: var(--color-primary);
}

.sidebar-icon {
  flex: 0 0 24px;
  font-size: 1.05rem;
  text-align: center;
}

.sidebar-label {
  opacity: 1;
  transition: opacity 120ms ease;
}

.sidebar-footer { margin-top: auto; }

.sidebar-content {
  margin-left: var(--sidebar-width);
  min-width: 0;
  transition: margin-left 220ms ease;
}

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

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

.has-app-sidebar.sidebar-collapsed .app-sidebar-header {
  justify-content: center;
}

.has-app-sidebar.sidebar-collapsed .app-sidebar .brand,
.has-app-sidebar.sidebar-collapsed .sidebar-label {
  display: none;
}

.has-app-sidebar.sidebar-collapsed .app-sidebar-nav a {
  gap: 0;
  justify-content: center;
  padding-inline: 0.5rem;
}

.has-app-sidebar.sidebar-collapsed .sidebar-toggle {
  margin-inline: auto;
}

.sidebar-backdrop { display: none; }

@media (prefers-reduced-motion: reduce) {
  .app-sidebar,
  .sidebar-content,
  .sidebar-toggle,
  .sidebar-label { transition: none; }
}

@media (max-width: 760px) {
  .has-app-sidebar { --sidebar-width: min(82vw, 280px); }

  .app-sidebar {
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.18);
    transform: translateX(-100%);
    width: var(--sidebar-width);
  }

  .sidebar-content,
  .has-app-sidebar.sidebar-collapsed .sidebar-content {
    margin-left: 0;
  }

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

  .has-app-sidebar.sidebar-open .sidebar-label,
  .has-app-sidebar.sidebar-open .app-sidebar .brand {
    display: inline-flex;
  }

  .mobile-sidebar-toggle {
    display: inline-flex;
    left: 0.75rem;
    position: fixed;
    top: 0.75rem;
    z-index: 50;
  }

  .sidebar-content > .page-shell,
  .sidebar-content > .content-shell {
    padding-top: 4.5rem;
  }

  .sidebar-backdrop {
    background: rgba(15, 23, 42, 0.42);
    border: 0;
    inset: 0;
    position: fixed;
    z-index: 30;
  }

  .has-app-sidebar.sidebar-open .sidebar-backdrop { display: block; }
}