/* Page reset and the top-level app shell layout. */

* { box-sizing: border-box; }

html, body {
  margin: 0; height: 100%;
  background: var(--page-plane);
  color: var(--text-primary);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}

.app { display: flex; flex-direction: column; height: 100vh; }

main { position: relative; flex: 1; min-height: 0; display: flex; }