/* shell.css
   App + main layout wrappers (no media queries)
*/
.app{
  height: 100dvh;
  display: grid;
  grid-template-columns: var(--sb-w) minmax(0, 1fr);
  background: var(--bg);
}

/* ===== Main wrapper ===== */
.main{
  min-width: 0;
  height: 100dvh;
  display: grid;
  grid-template-rows: var(--topbar-h) minmax(0, 1fr) auto;
  background: var(--bg);
}