.app{height:100%;display:grid;grid-template-rows:1fr auto}.main{min-height:0}.workspace{height:100%;display:flex;min-height:0}.split-pane{height:100%;display:flex;background:var(--color-bg-secondary);flex:1;min-width:0}.split-left,.split-right{flex:1 1 0;min-width:0;height:100%}.split-handle{width:var(--split-handle-width);cursor:col-resize;background:var(--color-border)}.panel{height:100%;background:var(--color-bg-elevated);border-right:1px solid var(--color-border);display:flex;flex-direction:column;min-height:0}.panel--right{border-right:none;border-left:1px solid var(--color-border)}.panel-header{padding:var(--spacing-sm);border-bottom:1px solid var(--color-border);color:var(--color-text-secondary);font-size:var(--font-size-sm);display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);flex-wrap:wrap}