/* Shared application layout; individual demo themes remain unchanged. */
.shell { max-width: 1600px; padding: 0 28px; }
.topbar { min-height: 76px; }
.app-layout { display: grid; grid-template-columns: 232px minmax(0, 1fr); gap: 28px; align-items: start; }
.app-main { min-width: 0; width: 100%; max-width: none; margin: 0; padding: 28px 0 0; }
.use-case-sidebar { position: sticky; top: 20px; display: flex; flex-direction: column; max-height: calc(100dvh - 40px); padding: 28px 16px 20px 0; border-right: 1px solid var(--border); }
.sidebar-heading { display: flex; align-items: center; justify-content: space-between; padding: 0 12px 18px; font-size: 10px; font-weight: 700; letter-spacing: 1.5px; color: var(--muted); }
.use-case-count { letter-spacing: 0; border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px; }
.use-case-list { display: flex; flex-direction: column; gap: 6px; overflow-y: auto; min-height: 0; padding: 5px; }
.use-case-link { display: flex; align-items: center; gap: 12px; width: 100%; flex-shrink: 0; padding: 12px 10px; border: 1px solid transparent; border-radius: 9px; background: transparent; text-decoration: none; text-align: left; font: 500 12px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; color: var(--muted); overflow-wrap: anywhere; }
.use-case-link > span { width: 18px; flex-shrink: 0; text-align: center; font-size: 18px; }
.use-case-link:hover { background: var(--panel, var(--surface)); color: var(--blue); }
.use-case-link.active { color: var(--blue); background: var(--panel, var(--surface)); border-color: var(--border); font-weight: 650; box-shadow: 0 2px 6px #283c6708; }
.sidebar-contribute { margin: 22px 12px 0; padding-top: 18px; border-top: 1px solid var(--border); font-size: 11px; color: var(--muted); text-decoration: none; }
.sidebar-contribute:hover { color: var(--blue); }
.navigation-toggle { display: none; }
.section-intro { margin: 0 0 22px; }
.section-intro h1 { font-size: 24px; line-height: 1.3; letter-spacing: -.7px; margin: 0; }
.compare-page > .app-layout { max-width: 1600px; padding: 0 28px; margin: auto; }
.compare-page .intro h1 { font-size: 26px; letter-spacing: -.8px; margin: 5px 0 10px; }
.compare-page .intro .lede { font-size: 13px; }
.compare-page #setup { margin-bottom: 22px; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 10; padding: 12px 18px; background: white; color: var(--blue); border: 1px solid var(--border); border-radius: 8px; }
.skip-link:focus { top: 12px; }
@media (min-width: 761px) and (max-width: 1150px) {
  .app-layout { grid-template-columns: 210px minmax(0, 1fr); gap: 20px; }
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .controls { grid-template-columns: 1fr 1fr; }
  .router-grid { grid-template-columns: minmax(0, 1fr); }
  .compare-page #catalog-tools { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .shell, .compare-page > .app-layout { padding: 0 16px; }
  .app-layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .use-case-sidebar { position: static; max-height: none; padding: 14px 0; border-right: 0; border-bottom: 1px solid var(--border); }
  .sidebar-heading, .use-case-list, .sidebar-contribute { display: none; }
  .navigation-toggle { display: flex; align-items: center; justify-content: space-between; width: 100%; border: 1px solid var(--border); background: var(--panel, var(--surface)); color: inherit; border-radius: 8px; padding: 10px 12px; font: inherit; }
  .use-case-sidebar.expanded .use-case-list { display: flex; max-height: 50dvh; margin-top: 8px; }
  .use-case-sidebar.expanded .sidebar-contribute { display: block; margin-top: 12px; }
  .app-main { padding-top: 22px; }
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .controls { grid-template-columns: 1fr 1fr; }
}