/* ── Rails Layout ───────────────────────────────── */
.page-shell {
  max-width: calc(var(--main-max-width) + 2.4rem);
  margin: 0 auto;
  padding: 1.2rem;
}

.container {
  max-width: var(--main-max-width);
  width: 100%;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.page-rail {
  display: none;
  width: 100%;
}

@media (min-width: 1360px) {
  .page-shell.has-left-rail,
  .page-shell.has-right-rail {
    max-width: calc(var(--main-max-width) + (var(--side-rail-width) * 2) + (var(--page-shell-gap) * 2) + 2.4rem);
    display: grid;
    grid-template-columns: minmax(200px, var(--side-rail-width)) minmax(var(--main-min-width-with-rails), var(--main-max-width)) minmax(200px, var(--side-rail-width));
    gap: var(--page-shell-gap);
    align-items: start;
    justify-content: center;
  }

  .page-shell.has-left-rail .container,
  .page-shell.has-right-rail .container {
    max-width: none;
    margin: 0;
    grid-column: 2;
  }

  .page-shell .page-rail-left {
    grid-column: 1;
  }

  .page-shell .page-rail-right {
    grid-column: 3;
  }

  .page-shell.has-left-rail .page-rail-left,
  .page-shell.has-right-rail .page-rail-right {
    display: grid;
    gap: 1rem;
    position: sticky;
    top: 108px;
    padding-bottom: 1px;
    max-height: calc(100vh - 108px - 1.2rem);
    overflow-y: auto;
    overflow-x: auto;
  }
}