/* Logo, utility strip and site header. Mobile: menu button opens a full-width panel. Desktop (1021px+): inline links. */
.logo { display: inline-flex; align-items: center; gap: 12px; color: var(--fg); }
.logo-mark { flex: none; }
.logo-words { display: flex; flex-direction: column; gap: 3px; }
.logo-name { font-family: var(--font-display); font-weight: 700; font-size: 19px; line-height: 1; }
.logo-sub { font-family: var(--font-display); font-weight: 600; font-size: 9.5px; letter-spacing: 0.24em; color: var(--teal-text); }
.brand { display: inline-flex; text-decoration: none; color: var(--fg); }
.brand:hover { color: var(--fg); }

.strip-top { background: var(--strip-bg); color: #B9C6DD; font-size: 13px; }
.strip-inner { display: flex; flex-direction: column; gap: 4px; padding-block: 8px; }
.strip-msg { display: none; }
.strip-doms { display: flex; flex-wrap: wrap; gap: 4px 20px; }
.strip-top a { color: #B9C6DD; text-decoration: none; font-family: var(--font-mono); font-size: 12px; }
.strip-top a:hover { color: #FFFFFF; }

.site-header {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top, 0px);
}
.header-bar { position: relative; display: flex; align-items: center; gap: 12px; padding-block: 10px; }
.header-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }

/* menu button swaps its icon */
.nav-toggle .ico-close { display: none; }
.nav-toggle[aria-expanded="true"] .ico-open { display: none; }
.nav-toggle[aria-expanded="true"] .ico-close { display: block; }

/* mobile panel */
.nav-menu {
  display: none;
  position: absolute; left: 0; right: 0; top: 100%;
  flex-direction: column;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 12px 24px rgba(8, 21, 48, 0.12);
  padding: 4px max(20px, env(safe-area-inset-right)) 20px max(20px, env(safe-area-inset-left));
  max-height: calc(100vh - 120px);
  max-height: calc(100dvh - 120px);
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}
.nav-menu.is-open { display: flex; }
.nav-menu a.link {
  display: flex; align-items: center; min-height: 52px;
  border-bottom: 1px solid var(--line);
  color: var(--fg); text-decoration: none; font-weight: 500; font-size: 16px;
}
.nav-menu a.link:hover { color: var(--teal-text); }
.nav-menu .btn { margin-top: 16px; }

@media (min-width: 640px) {
  .strip-inner { flex-direction: row; justify-content: space-between; align-items: center; }
  .strip-msg { display: inline; }
}

@media (min-width: 1021px) {
  .nav-toggle { display: none; }
  .header-bar { padding-block: 12px; gap: 24px; }
  .nav-menu {
    display: flex; position: static; flex-direction: row; align-items: center; gap: 26px;
    margin-left: auto; padding: 0; border: 0; box-shadow: none; background: transparent;
    max-height: none; overflow: visible;
  }
  .nav-menu a.link { min-height: 0; border-bottom: 2px solid transparent; padding-block: 6px; font-size: 14.5px; }
  .nav-menu a.link:hover { border-bottom-color: var(--teal); color: var(--fg); }
  .nav-menu .btn { margin-top: 0; }
  .header-actions { margin-left: 0; }
}