/* Sitewide shell. Page-specific grids begin in later phases. */
.bbx-site-header { position: relative; z-index: 20; border-bottom: 2px solid var(--bbx-shell-divider); background: var(--bbx-header-bg); color: var(--bbx-header-text); }
.bbx-utility-bar { min-height: 1.9rem; padding: 0.3rem 0; background: var(--bbx-accent); color: var(--bbx-p-dark-text); text-align: center; font-size: 0.69rem; font-weight: 650; letter-spacing: 0.15em; text-transform: uppercase; }
.bbx-header-main { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 6.8rem; gap: var(--bbx-space-4); }
.bbx-brand-axis { grid-column: 2; justify-self: center; text-align: center; }
.bbx-brand-axis .custom-logo-link { display: inline-block; line-height: 0; }
.bbx-brand-axis .custom-logo { display: block; width: auto; max-height: 4.8rem; }
.bbx-wordmark, .bbx-footer-wordmark { color: inherit; font-size: clamp(1.15rem, 2vw, 1.8rem); font-weight: 600; letter-spacing: 0.2em; line-height: 1.1; text-decoration: none; white-space: nowrap; }
.bbx-wordmark span, .bbx-footer-wordmark span { font-family: var(--bbx-font-display); font-weight: 400; letter-spacing: 0.08em; }
.bbx-header-actions { grid-column: 3; display: flex; justify-content: flex-end; align-items: center; gap: clamp(0.1rem, 1vw, 0.75rem); }
.bbx-icon-button, .bbx-menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 2.7rem; height: 2.7rem; padding: 0; border: 1px solid transparent; background: transparent; color: var(--bbx-header-text); text-decoration: none; }
.bbx-icon-button:hover, .bbx-menu-toggle:hover { border-color: currentColor; background: transparent; color: var(--bbx-header-text); }
.bbx-menu-toggle, .bbx-mode-toggle { display: none; }
.bbx-js .bbx-mode-toggle { display: inline-flex; }
.bbx-mode-toggle span { font-size: 1.45rem; line-height: 1; }
.bbx-search { position: relative; }
.bbx-search > summary { list-style: none; cursor: pointer; }
.bbx-search > summary::-webkit-details-marker, .bbx-nav-dropdown summary::-webkit-details-marker { display: none; }
.bbx-search-panel { position: absolute; z-index: 40; top: calc(100% + 0.6rem); right: 0; width: min(27rem, calc(100vw - 2rem)); padding: var(--bbx-space-4); border: 1px solid var(--bbx-border); background: var(--bbx-surface); color: var(--bbx-text); }
.bbx-search-panel label { display: block; margin-bottom: var(--bbx-space-2); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; }
.bbx-search-controls { display: flex; gap: var(--bbx-space-2); }
.bbx-search-controls input { min-width: 0; }

.bbx-primary-nav { border-top: 2px solid var(--bbx-shell-divider); background: var(--bbx-nav-bg); color: var(--bbx-nav-text); }
.bbx-primary-list, .bbx-primary-list ul { padding: 0; margin: 0; list-style: none; }
.bbx-primary-list { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 0 clamp(0.8rem, 1.65vw, 1.8rem); min-height: 2.1rem; }
.bbx-primary-list > li > a, .bbx-primary-list > li > span, .bbx-primary-list > li > details > summary { display: inline-block; padding: 0.32rem 0; font-size: 0.72rem; font-weight: 650; letter-spacing: 0.11em; text-decoration: none; text-transform: uppercase; white-space: nowrap; }
.bbx-primary-list a:hover, .bbx-primary-list summary:hover { text-decoration: underline; text-underline-offset: 0.35em; }
.bbx-nav-unavailable { color: var(--bbx-nav-text); opacity: 0.7; }
.bbx-nav-dropdown { position: relative; }
.bbx-nav-dropdown summary { list-style: none; cursor: pointer; }
.bbx-nav-dropdown summary::after { content: "⌄"; margin-left: 0.35rem; font-size: 1rem; }
.bbx-nav-dropdown ul { position: absolute; z-index: 50; top: 100%; left: 50%; width: max-content; min-width: 15rem; max-width: 22rem; transform: translateX(-50%); padding: 0.55rem; border: 1px solid var(--bbx-shell-divider); background: var(--bbx-nav-bg); }
.bbx-nav-dropdown li > a, .bbx-nav-dropdown li > span { display: block; padding: 0.5rem 0.7rem; font-size: 0.82rem; line-height: 1.35; text-decoration: none; }
.bbx-nav-dropdown li > a:hover { text-decoration: underline; }
.bbx-primary-list a { color: inherit; }
.bbx-primary-nav a:focus-visible, .bbx-primary-nav summary:focus-visible { outline-color: var(--bbx-nav-text); }
.bbx-header-main a:focus-visible, .bbx-header-main button:focus-visible, .bbx-header-main summary:focus-visible { outline-color: var(--bbx-header-text); }
.bbx-primary-list .sub-menu { position: absolute; z-index: 50; top: 100%; left: 0; min-width: 14rem; padding: 0.5rem; background: var(--bbx-nav-bg); border: 1px solid var(--bbx-shell-divider); display: none; }
.bbx-primary-list .menu-item-has-children { position: relative; }
.bbx-primary-list .menu-item-has-children:hover > .sub-menu, .bbx-primary-list .menu-item-has-children:focus-within > .sub-menu { display: block; }
.bbx-primary-list .sub-menu a { display: block; padding: 0.5rem; }

.bbx-site-footer { margin-top: var(--bbx-space-6); border-top: 1px solid var(--bbx-accent); background: var(--bbx-surface); }
.bbx-footer-main { display: grid; grid-template-columns: minmax(13rem, 1.6fr) repeat(3, minmax(9rem, 1fr)); gap: clamp(1.5rem, 4vw, 4rem); padding-block: clamp(3rem, 5vw, 5rem); }
.bbx-footer-identity .bbx-divider { margin-top: var(--bbx-space-4); }
.bbx-footer-column h2 { margin: 0 0 1.25rem; font: 650 0.76rem/1.4 var(--bbx-font-body); letter-spacing: 0.13em; text-transform: uppercase; }
.bbx-footer-column ul { margin: 0; padding: 0; list-style: none; }
.bbx-footer-column li + li { margin-top: 0.55rem; }
.bbx-footer-column a, .bbx-footer-column span { font-size: 0.9rem; text-decoration: none; }
.bbx-footer-column a:hover { text-decoration: underline; }
.bbx-footer-newsletter { grid-column: 1 / -1; max-width: 32rem; }
.bbx-footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: var(--bbx-space-4); min-height: 4rem; padding-block: 0.75rem; border-top: 1px solid var(--bbx-border); }
.bbx-footer-bottom small { color: var(--bbx-muted); }
.bbx-footer-bottom ul { display: flex; flex-wrap: wrap; gap: var(--bbx-space-4); padding: 0; margin: 0; list-style: none; }
.bbx-footer-bottom a { font-size: 0.78rem; text-decoration: none; }
.bbx-footer-mode { display: none !important; }
.bbx-js .bbx-footer-mode { display: inline-flex !important; min-height: 2.5rem; padding: 0.4rem 0.8rem; border: 1px solid var(--bbx-border); background: transparent; color: var(--bbx-text); }
.bbx-js .bbx-footer-mode:hover { background: var(--bbx-page); }

@media (max-width: 68rem) {
  .bbx-header-main { min-height: 5.5rem; grid-template-columns: minmax(2.7rem, 1fr) auto minmax(8rem, 1fr); }
  .bbx-js .bbx-menu-toggle { display: inline-flex; grid-column: 1; justify-self: start; }
  .bbx-primary-list { display: block; padding-block: var(--bbx-space-3); }
  .bbx-primary-list > li > a, .bbx-primary-list > li > span, .bbx-primary-list > li > details > summary { display: block; padding: 0.7rem 0; }
  .bbx-primary-list > li + li { border-top: 1px solid var(--bbx-accent); }
  .bbx-nav-dropdown ul { position: static; transform: none; width: 100%; max-width: none; border: 0; border-left: 1px solid var(--bbx-accent); margin-bottom: var(--bbx-space-3); }
  .bbx-primary-list .sub-menu { position: static; display: block; border: 0; border-left: 1px solid var(--bbx-shell-divider); }
  .bbx-js .bbx-primary-nav { display: none; }
  .bbx-js .bbx-site-header.bbx-menu-open .bbx-primary-nav { display: block; }
  .bbx-footer-main { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .bbx-footer-identity { grid-column: 1 / -1; }
}

@media (max-width: 42rem) {
  .bbx-header-main { grid-template-columns: 2.7rem minmax(0, 1fr) auto; min-height: 4.8rem; gap: 0.2rem; }
  .bbx-brand-axis { grid-column: 2; }
  .bbx-wordmark { font-size: clamp(0.92rem, 3.6vw, 1.2rem); letter-spacing: 0.1em; }
  .bbx-header-actions { gap: 0; }
  .bbx-icon-button, .bbx-menu-toggle { width: 2.25rem; height: 2.5rem; }
  .bbx-mode-toggle { display: none !important; }
  .bbx-search-panel { right: -4.5rem; }
  .bbx-search-controls { display: block; }
  .bbx-search-controls button { margin-top: var(--bbx-space-2); width: 100%; }
  .bbx-footer-main { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bbx-footer-bottom { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 26rem) {
  .bbx-wordmark { font-size: 0.83rem; letter-spacing: 0.05em; }
  .bbx-header-actions .bbx-icon-button { width: 2rem; }
  .bbx-footer-main { grid-template-columns: 1fr; }
  .bbx-footer-identity { grid-column: auto; }
}