.shell {
  min-height: 100vh;
  background: var(--bg);
}

.app-screen {
  min-height: 100vh;
  padding: calc(72px + env(safe-area-inset-top)) 24px 24px 24px;
}

/* ── Topbar ── */
.topbar {
  position: fixed;
  top: 0; right: 0; left: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: calc(64px + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) 24px 0;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  flex: 1;
}

.topbar-left > div {
  min-width: 0;
}

.topbar h1 {
  margin-bottom: 0;
  font-size: 1.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar .eyebrow {
  margin-bottom: 2px;
  font-size: 0.68rem;
}

/* ── Botão hamburger ── */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border: none;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text, #1e293b);
  transition: transform 0.25s, opacity 0.25s, width 0.25s;
  width: 100%;
}

.hamburger:hover { background: var(--blue-soft, #eff6ff); }

/* Estado "aberto": transforma em X */
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Overlay escuro ── */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 14;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(1px);
}

/* ── Sidebar (tabbar) ── */
.tabbar {
  position: fixed;
  top: calc(64px + env(safe-area-inset-top));
  bottom: 0;
  left: 0;
  z-index: 15;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 240px;
  padding: 18px 14px calc(18px + env(safe-area-inset-bottom));
  border-right: 1px solid var(--border);
  background: #ffffff;

  /* começa fora da tela */
  transform: translateX(-100%);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 4px 0 24px rgba(0,0,0,.08);
}

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

.tabbar button {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-sub);
  font-size: 0.9rem;
  font-weight: 750;
  text-align: left;
  padding: 0 12px;
  cursor: pointer;
}

.tabbar button span {
  color: inherit;
  font-size: 1rem;
}

.tabbar button.active {
  background: var(--blue-soft);
  color: var(--blue);
}

.tabbar button:hover:not(.active) {
  background: var(--blue-soft, #eff6ff);
}

/* ── Grupo colapsável na sidebar ── */
.sidebar-group { display: flex; flex-direction: column; }

.tabbar .sidebar-group-header {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-sub);
  font-size: 0.9rem;
  font-weight: 750;
  text-align: left;
  padding: 0 12px;
  cursor: pointer;
  width: 100%;
}
.tabbar .sidebar-group-header:hover { background: var(--blue-soft, #eff6ff); }

.sidebar-group-arrow { font-size: .65rem; transition: transform .2s; }
.sidebar-group.open .sidebar-group-arrow { transform: rotate(180deg); }

.sidebar-group-body {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding-left: 14px;
}
.sidebar-group.open .sidebar-group-body { display: flex; }

.sidebar-group-body button {
  min-height: 38px;
  font-size: 0.85rem;
}

.content {
  width: min(100%, 1120px);
}

@media (max-width: 860px) {
  .app-screen {
    padding: calc(80px + env(safe-area-inset-top)) 14px 18px;
  }

  .topbar {
    padding: env(safe-area-inset-top) 14px 0;
  }
}

@media (max-width: 480px) {
  .app-screen {
    padding: calc(72px + env(safe-area-inset-top)) 10px 16px;
  }

  .topbar {
    padding: env(safe-area-inset-top) 10px 0;
  }

  .tabbar {
    width: min(240px, 82vw);
  }
}