#app-shell {
  background-color: var(--fill-header);
  background-image: var(--noise);
  background-blend-mode: multiply;
  color: var(--text-on-dark);
  padding: 0.75rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

#app-footer {
  background-color: var(--fill-footer);
  background-image: var(--noise);
  background-blend-mode: multiply;
  color: var(--text-on-dark);
  padding: 0.5rem 1.25rem;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.875rem;
}

#page-root {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
  min-height: calc(100vh - 8rem);
}

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
  padding: 0.5rem 0;
}