/* Demo composition only. Shared F12 classes own type and surface styling. */
body { margin: 0; }

.demo-header {
  padding-inline: var(--f12-space-6);
  border-bottom: 1px solid var(--f12-color-border-subtle);
  box-shadow: var(--f12-shadow-1);
}
.demo-header__inner {
  max-width: 1180px;
  min-height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--f12-space-8);
}
.demo-logo { display: block; width: auto; height: 40px; }
.demo-desktop-nav {
  display: flex;
  align-items: center;
  gap: var(--f12-space-8);
}
.demo-nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  gap: var(--f12-space-2);
  font-size: var(--f12-font-size-md);
  font-weight: var(--f12-font-weight-bold);
  letter-spacing: 0.5px;
  color: var(--f12-color-text-heading);
  text-decoration: none;
  cursor: pointer;
  list-style: none;
}
.demo-nav-link::-webkit-details-marker { display: none; }
.demo-nav-link img { opacity: 0.6; }
.demo-nav-link:hover,
.demo-nav-link:focus-visible,
.demo-nav-group[open] > summary { color: var(--f12-color-brand-editorial); }
.demo-nav-group { position: relative; }
.demo-dropdown {
  position: absolute;
  top: calc(100% + var(--f12-space-2));
  left: 50%;
  transform: translateX(-50%);
  min-width: 240px;
  padding: var(--f12-space-3);
  z-index: 2;
}
.demo-dropdown a {
  padding: var(--f12-space-2) var(--f12-space-3);
  border-radius: var(--f12-radius-1);
  font-size: var(--f12-font-size-sm);
  font-weight: var(--f12-font-weight-medium);
  text-decoration: none;
}
.demo-dropdown a:hover,
.demo-dropdown a:focus-visible { background: var(--f12-color-surface-subtle); }
.demo-header__actions { display: flex; gap: var(--f12-space-2); }
.demo-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  cursor: pointer;
  border-radius: var(--f12-radius-pill);
}
.demo-icon:hover { background: var(--f12-color-surface-subtle); }
.demo-icon img { display: block; }
.demo-menu { display: none; position: relative; }
.demo-menu summary { list-style: none; }
.demo-menu summary::-webkit-details-marker { display: none; }
.demo-menu nav {
  position: absolute;
  top: calc(100% + var(--f12-space-3));
  right: 0;
  min-width: 220px;
  z-index: 1;
}
.demo-menu a { text-decoration: none; }
.demo-menu a:hover { text-decoration: underline; }
.skip-link {
  position: absolute;
  left: var(--f12-space-4);
  top: var(--f12-space-4);
  transform: translateY(-200%);
  padding: var(--f12-space-3);
  background: var(--f12-color-surface-card);
  z-index: 2;
}
.skip-link:focus { transform: none; }

@media (max-width: 900px) {
  .demo-desktop-nav { display: none; }
  .demo-menu { display: block; }
}

@media (max-width: 640px) {
  .demo-header { padding-inline: var(--f12-space-4); }
  .demo-header__inner { min-height: 72px; }
  .demo-header__actions { gap: var(--f12-space-1); }
}

@media print {
  .demo-header, .skip-link { display: none; }
}