/* =========================================================
   TextBases Page Shell V1
   Shared page-level layout utilities.
   ========================================================= */

.tb-shell-narrow {
  width: min(100%, 920px);
  margin-inline: auto;
  padding-inline: var(--tb-page-pad);
}

.tb-shell-default {
  width: min(100%, var(--tb-container));
  margin-inline: auto;
  padding-inline: var(--tb-page-pad);
}

.tb-shell-wide {
  width: min(100%, var(--tb-container-wide));
  margin-inline: auto;
  padding-inline: var(--tb-page-pad);
}

.tb-stack {
  display: grid;
  gap: 18px;
}

.tb-stack-lg {
  display: grid;
  gap: 28px;
}

.tb-cluster {
  margin-top: var(--tb-section-gap);
}