.demo-shell{display:flex;flex-direction:column;min-height:calc(100vh - 56px)}.demo-shell__strip{display:flex;align-items:center;gap:var(--sk-space-md);padding:var(--sk-space-xs) var(--sk-space-lg);background:var(--sk-bg-elevated);border-bottom:1px solid var(--sk-border);font-family:var(--sk-font-mono);font-size:var(--sk-font-size-sm)}.demo-shell__back{color:var(--sk-text-secondary);text-decoration:none}.demo-shell__back:hover{color:var(--sk-accent)}.demo-shell__name{color:var(--sk-text-primary);font-weight:var(--sk-font-weight-semibold, 600)}.demo-shell__tagline{color:var(--sk-text-muted)}.demo-shell__spacer{flex:1}.demo-shell__theme{display:flex;align-items:center;gap:var(--sk-space-sm)}.demo-shell__theme-label{color:var(--sk-text-muted)}.demo-shell__theme-select{min-width:160px}.demo-shell__source{color:var(--sk-text-secondary);text-decoration:none}.demo-shell__source:hover{color:var(--sk-accent)}.demo-shell__app{flex:1;display:flex;flex-direction:column;min-height:0}@media(max-width:640px){.demo-shell__tagline,.demo-shell__theme-label{display:none}.demo-shell__theme-select{min-width:120px}}