.app-shell {
  min-height: 100vh;
  min-height: 100dvh;
  padding: 18px 16px calc(18px + var(--safe-bottom));
}

.loader-screen,
.state-screen {
  min-height: calc(100vh - 36px);
  min-height: calc(100dvh - 36px);
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  text-align: center;
}

.portal-shell {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.portal-header {
  display: grid;
  gap: 16px;
  padding: 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.hotel-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.hotel-logo {
  width: 58px;
  height: 58px;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: var(--color-secondary);
  padding: 8px;
}

.hotel-title {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.1;
}

.hotel-subtitle {
  margin: 4px 0 0;
  color: var(--color-muted);
  font-weight: 700;
  font-size: 0.88rem;
}

.module-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.module-view {
  display: grid;
  gap: 18px;
}

@media (min-width: 760px) {
  .app-shell {
    padding: 26px;
  }

  .portal-header {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}