/* ============================================================
   HEADER — navegación sticky
   ============================================================ */

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 0;
}

.brand { display: flex; flex-direction: column; line-height: 1.05 }
.brand b    { font-family: 'Fraunces', serif; font-size: 1.18rem; font-weight: 700; color: var(--navy-800) }
.brand span { font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold-600); font-weight: 600 }

.nav .btn { padding: .7rem 1.4rem; font-size: .92rem }

.nav-links { display: flex; gap: 2rem; align-items: center }
.nav-links a { font-weight: 600; font-size: .95rem; color: var(--ink); opacity: .8 }
.nav-links a:hover { opacity: 1; color: var(--gold-600) }

@media (max-width: 860px) {
  .nav-links a:not(.btn) { display: none }
}