/* Site-wide nav · shared by homepage + every content template.
   Depends on the dark-navy palette variables exposed by each page's :root:
   --bg, --text, --text-soft, --accent, --accent-bright, --accent-dim,
   --border, --border-soft, --card, --card-soft, --rule,
   --serif, --mono. */

header.site {
  position: relative;
  z-index: 30;
  border-bottom: 1px solid var(--rule);
  padding: 1.4rem 1.5rem;
  background: rgba(14,27,44,0.85);
  backdrop-filter: saturate(140%) blur(8px);
}
header.site .inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}
.wordmark {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border: none;
}
.wordmark:hover { color: var(--accent-bright); }

header.site nav.primary {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  justify-content: flex-end;
  align-items: center;
}
header.site nav.primary > a,
header.site nav.primary .dt-nav__trigger {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--text-soft);
  text-transform: uppercase;
  font-weight: 500;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  height: 1.6rem;
  text-decoration: none;
  border: none;
}
header.site nav.primary > a:hover,
header.site nav.primary .dt-nav__trigger:hover { color: var(--text); }

header.site nav.primary a.subscribe {
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  transition: background 0.15s, border-color 0.15s;
  height: auto;
}
header.site nav.primary a.subscribe:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent-bright);
}

header.site nav.primary .nav-sep {
  display: inline-block;
  width: 1px;
  height: 1rem;
  background: var(--border-soft);
  margin: 0 0.35rem;
}

header.site nav.primary a.nav-cta-secondary {
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  height: 1.6rem;
  transition: color 0.15s;
  border: none;
}
header.site nav.primary a.nav-cta-secondary:hover { color: var(--accent-bright); }

/* Mega menu */
.dt-nav__item {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.dt-nav__trigger {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.dt-nav__caret {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 3px solid transparent;
  border-right: 3px solid transparent;
  border-top: 4px solid currentColor;
  transition: transform 0.18s ease;
  opacity: 0.7;
}
.dt-nav__trigger[aria-expanded="true"] .dt-nav__caret { transform: rotate(180deg); }

.dt-mega {
  position: absolute;
  top: calc(100% + 0.85rem);
  right: 0;
  width: 560px;
  background: var(--card);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 1.4rem 1.4rem 1.25rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.45), 0 1px 0 rgba(242,233,216,0.04);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.22s cubic-bezier(.2,.7,.2,1), transform 0.22s cubic-bezier(.2,.7,.2,1);
  z-index: 40;
}
.dt-mega[hidden] { display: none; }
.dt-mega.open { opacity: 1; transform: translateY(0); }
.dt-mega__eyebrow {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.95rem;
  font-weight: 600;
}
.dt-mega__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem 1.25rem;
}
.dt-mega__link {
  display: block;
  padding: 0.7rem 0.75rem;
  border-radius: 6px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}
.dt-mega__link:hover,
.dt-mega__link:focus-visible {
  background: var(--card-soft);
  border-color: var(--border-soft);
  outline: none;
  color: var(--text);
}
.dt-mega__title {
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.25;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 0.15rem;
}
.dt-mega__link:hover .dt-mega__title,
.dt-mega__link:focus-visible .dt-mega__title { color: var(--accent); }
.dt-mega__dek {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-dim, #8a8478);
  line-height: 1.45;
}

@media (prefers-reduced-motion: reduce) {
  .dt-mega { transition-duration: 0s; }
}

@media (max-width: 760px) {
  header.site { padding: 1rem 1.25rem; }
  header.site .inner { flex-direction: column; align-items: flex-start; gap: 0.85rem; }
  header.site nav.primary { gap: 0.85rem; }
  header.site nav.primary .nav-sep { display: none; }
  .dt-mega { width: 92vw; right: -1rem; }
}