/* ═══════════════════════════════════════════════════════
   VALHALLA MUSIC — Navigation
   ═══════════════════════════════════════════════════════ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px var(--wrap-padding);
  transition: all 0.6s var(--ease-out-expo);
}

.nav.is-scrolled {
  padding-top: 16px;
  padding-bottom: 16px;
  background: rgba(7, 7, 7, 0.88);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--border-subtle);
}

.nav.is-hidden {
  transform: translateY(-100%);
}

.nav__logo {
  position: relative;
  z-index: 10;
}

.nav__logo img {
  height: 38px;
  display: block;
  transition: opacity 0.3s;
}

.nav__logo:hover img {
  opacity: 0.7;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 44px;
}

.nav__link {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.3s;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.4s var(--ease-out-expo);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--text-primary);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  width: 100%;
}

.nav__cta {
  margin-left: 12px;
}

.nav__link.nav__cta:hover,
.nav__link.nav__cta.is-active {
  color: var(--bg-primary);
}

.nav__link.nav__cta::after {
  display: none;
}

/* ── Mobile Menu Toggle ──────────────────────────── */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 28px;
  background: none;
  border: none;
  padding: 4px 0;
  z-index: 10;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--text-primary);
  transition: all 0.4s var(--ease-out-expo);
  transform-origin: center;
}

.nav__toggle.is-active span:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

.nav__toggle.is-active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__toggle.is-active span:nth-child(3) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ── Mobile Menu Overlay ─────────────────────────── */
.nav__mobile {
  position: fixed;
  inset: 0;
  background: rgba(4, 4, 4, 0.97);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease-out-expo),
              visibility 0.5s;
}

.nav__mobile.is-open {
  opacity: 1;
  visibility: visible;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 5rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--white);
  padding: 12px 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s, transform 0.5s var(--ease-out-expo), color 0.3s;
}

.nav__mobile.is-open .nav__mobile-link {
  opacity: 1;
  transform: translateY(0);
}

.nav__mobile.is-open .nav__mobile-link:nth-child(1) { transition-delay: 0.1s; }
.nav__mobile.is-open .nav__mobile-link:nth-child(2) { transition-delay: 0.15s; }
.nav__mobile.is-open .nav__mobile-link:nth-child(3) { transition-delay: 0.2s; }
.nav__mobile.is-open .nav__mobile-link:nth-child(4) { transition-delay: 0.25s; }
.nav__mobile.is-open .nav__mobile-link:nth-child(5) { transition-delay: 0.3s; }

.nav__mobile-link:hover {
  color: var(--accent);
}

.nav__mobile-footer {
  position: absolute;
  bottom: 48px;
  display: flex;
  gap: 32px;
  opacity: 0;
  transition: opacity 0.5s 0.35s;
}

.nav__mobile.is-open .nav__mobile-footer {
  opacity: 1;
}

.nav__mobile-social {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  opacity: 0.82;
  transition: opacity 0.3s;
  filter: grayscale(1) brightness(1.18) contrast(1.05);
}

.nav__mobile-social:hover {
  opacity: 1;
}

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 960px) {
  .nav__links {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }
}