.column-stack{ display:flex; }
.column-stack{ flex-direction:column; gap:12px; }
.column-stack > .field-wrap{ flex:0 0 auto; width:100%; }
.column-stack > .field-wrap.hidden{ display:none; }
.column-stack-cards{ flex:1 1 auto; min-height:0; }
.column-stack-title{
  font-family:var(--font-display); font-weight:var(--font-weight-light);
  font-size:var(--md-typography-font-size-600); line-height:32px;
  color:var(--md-brand-foreground-1-rest); outline:none; width:fit-content; max-width:100%;
}
.column-stack-title[data-placeholder]:empty:before{ content:attr(data-placeholder); color:var(--ui-muted); }
.column-stack[data-style="accent"] .column-stack-title{ color:var(--md-color-grey-white); }

.column-stack-cards{
  display:flex; flex-direction:column; gap:24px;
  width:100%; min-height:0;
}
.column-stack-card{ flex:1 1 0; min-height:0; overflow:hidden; }
.column-stack-card.content-card{ min-height:0; }

.column-stack-thumb{ display:flex; flex-direction:column; gap:3px; width:100%; }
.column-stack-thumb span{ height:9px; border-radius:2px; background:var(--ui-border); }

.column-kind-picker{ display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.column-kind-card{
  position:relative; display:flex; flex-direction:column; align-items:center; gap:6px;
  padding:10px 8px; border:1px solid var(--ui-border); border-radius:10px;
  background:var(--ui-surface); cursor:pointer; text-align:center;
}
.column-kind-card:hover{ border-color:var(--ui-accent); }
.column-kind-card input{ position:absolute; opacity:0; width:0; height:0; margin:0; pointer-events:none; }
.column-kind-card:has(input:checked){ border-color:var(--ui-accent); box-shadow:0 0 0 1px var(--ui-accent) inset; }
.column-kind-card:has(input:focus-visible){ outline:2px solid var(--ui-accent); outline-offset:2px; }
.column-kind-label{ font-size:var(--text-sm); color:var(--ui-text); }
.column-kind-thumb{
  display:flex; width:100%; height:46px; padding:8px; gap:6px;
  border-radius:6px; background:var(--md-neutral-background-2-rest);
}
.column-kind-thumb-feature{ align-items:center; }
.column-kind-thumb-list{ flex-direction:column; justify-content:center; gap:4px; }
.column-kind-square{ flex:0 0 auto; width:20px; height:20px; border-radius:4px; background:var(--ui-border); }
.column-kind-lines{ display:flex; flex-direction:column; gap:4px; flex:1 1 auto; min-width:0; }
.column-kind-line{ height:4px; border-radius:2px; background:var(--ui-border); }
.column-kind-line-title{ width:60%; background:var(--ui-muted); }
.column-kind-row{ height:4px; border-radius:2px; background:var(--ui-border); }

.column-stack-row-fields{ display:flex; flex-direction:column; gap:6px; flex:1 1 auto; min-width:0; }
.column-card-items{ display:flex; flex-direction:column; gap:6px; padding-left:8px; border-left:1px solid var(--ui-border); }
.column-card-item{ display:flex; align-items:center; gap:6px; }
.column-card-item .column-item-label{ flex:1 1 auto; min-width:0; }