/* ─────────────────────────────────────────────────────────────────────────
   nav.css
   Site header, desktop nav, mobile drawer, overlay.
   ───────────────────────────────────────────────────────────────────────── */

/* ── HEADER WRAPPER ────────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
}

/* ── NAV BAR ───────────────────────────────────────────────────────────── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px var(--gutter);
  transition:
    background var(--duration-slow) var(--ease-standard),
    padding    var(--duration-slow) var(--ease-standard),
    border-color var(--duration-slow) var(--ease-standard);
}
.nav--scrolled {
  background: rgba(13,11,9,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 20px var(--gutter);
  border-bottom: var(--border-gold-subtle);
}

/* ── LOGO ──────────────────────────────────────────────────────────────── */
.nav-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-decoration: none;
  transition: opacity var(--duration-fast) ease;
}
.nav-logo span { color: var(--gold); }
.nav-logo:hover { opacity: 0.8; }

/* ── DESKTOP LINKS ─────────────────────────────────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--size-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--ivory-dim);
  text-decoration: none;
  position: relative;
  transition: color var(--duration-fast) ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--duration-base) var(--ease-out);
}
.nav-link:hover,
.nav-link--active {
  color: var(--ivory);
}
.nav-link:hover::after,
.nav-link--active::after {
  width: 100%;
}

/* ── NAV CTA BUTTON ────────────────────────────────────────────────────── */
.nav-cta {
  font-family: var(--font-body);
  font-size: var(--size-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--ink);
  background: var(--gold);
  padding: 10px 24px;
  text-decoration: none;
  transition:
    background var(--duration-fast) ease,
    color      var(--duration-fast) ease;
}
.nav-cta:hover {
  background: var(--gold-light);
}

/* ── HAMBURGER ─────────────────────────────────────────────────────────── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: none;
}
.hamburger-bar {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--ivory);
  transition:
    transform var(--duration-base) var(--ease-out),
    opacity   var(--duration-base) ease;
}
.nav-hamburger[aria-expanded="true"] .hamburger-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-hamburger[aria-expanded="true"] .hamburger-bar:nth-child(2) {
  opacity: 0;
}
.nav-hamburger[aria-expanded="true"] .hamburger-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── MOBILE DRAWER ─────────────────────────────────────────────────────── */
.mobile-menu {
  position: fixed;
  top: 0; right: 0;
  width: min(320px, 85vw);
  height: 100dvh;
  background: var(--ink-mid);
  border-left: var(--border-gold-subtle);
  z-index: var(--z-drawer);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  display: flex;
  flex-direction: column;
}
.mobile-menu--open {
  transform: translateX(0);
}

.mobile-menu-inner {
  padding: var(--space-12) var(--space-8);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.mobile-menu-close {
  align-self: flex-end;
  color: var(--ivory-dim);
  padding: var(--space-2);
  margin-bottom: var(--space-12);
  transition: color var(--duration-fast) ease;
  cursor: none;
}
.mobile-menu-close:hover { color: var(--gold); }

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  color: var(--ivory-dim);
  text-decoration: none;
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(201,168,76,0.06);
  transition:
    color        var(--duration-fast) ease,
    padding-left var(--duration-base) var(--ease-out);
}
.mobile-nav-link:hover,
.mobile-nav-link--active {
  color: var(--gold);
  padding-left: var(--space-4);
}

.mobile-menu-footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-8);
  border-top: var(--border-gold-subtle);
  margin-top: var(--space-8);
}

/* ── MOBILE OVERLAY ────────────────────────────────────────────────────── */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13,11,9,0.7);
  backdrop-filter: blur(4px);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow) ease;
}
.mobile-overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── RESPONSIVE ────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav { padding: 20px var(--gutter-sm); }
  .nav--scrolled { padding: 16px var(--gutter-sm); }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}