/* =========================================================
   NORTHSTAR SELECTED — Navigation
   ========================================================= */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--sp-6) var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition:
    background var(--duration-slow) var(--ease-out),
    padding var(--duration-slow) var(--ease-out),
    box-shadow var(--duration-slow) var(--ease-out);
}

/* Transparent on hero */
.nav--transparent {
  background: transparent;
}

/* Scrolled state */
.nav--scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding-block: var(--sp-4);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

/* Light scrolled state (over light sections) */
.nav--light-scrolled {
  background: rgba(250, 250, 249, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

/* ── Logo ───────────────────────────────────────────────── */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  z-index: 2;
}

.nav__logo-img {
  height: 65px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  transition: opacity var(--duration-base) var(--ease-out);
}

.nav--transparent .nav__logo-img {
  filter: brightness(0) invert(1);
}

.nav--scrolled .nav__logo-img {
  filter: brightness(0) invert(1);
}

.nav--light .nav__logo-img {
  filter: brightness(0) invert(1);
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-wide);
  color: var(--color-white);
  line-height: 1;
  transition: color var(--duration-base) var(--ease-out);
}

.nav__logo-sub {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-gold);
  margin-top: 2px;
}

/* Dark nav (light backgrounds) */
.nav--light .nav__logo-text {
  color: var(--color-black);
}

/* ── Desktop Links ──────────────────────────────────────── */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-10);
}

.nav__link {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  transition: color var(--duration-base) var(--ease-out);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width var(--duration-base) var(--ease-out);
}

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

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

/* Dark nav variant */
.nav--light .nav__link {
  color: var(--color-mid);
}

.nav--light .nav__link:hover,
.nav--light .nav__link.is-active {
  color: var(--color-black);
}

/* ── Nav CTA ────────────────────────────────────────────── */
.nav__cta {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

/* ── Hamburger ──────────────────────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  z-index: 2;
  background: none;
  border: none;
  padding: 0;
}

.nav__hamburger-line {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--color-white);
  transform-origin: center;
  transition:
    transform var(--duration-base) var(--ease-out),
    opacity var(--duration-base) var(--ease-out),
    width var(--duration-base) var(--ease-out);
}

.nav__hamburger-line:nth-child(2) {
  width: 70%;
}

.nav__hamburger.is-open .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  width: 100%;
}

.nav__hamburger.is-open .nav__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: translateX(-8px);
}

.nav__hamburger.is-open .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu ────────────────────────────────────────── */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-nav) - 1);
  background: var(--color-charcoal);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--duration-slow) var(--ease-out);
}

.nav__mobile.is-open {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-light);
  color: var(--color-white);
  letter-spacing: 0.02em;
  transition: color var(--duration-base) var(--ease-out);
  text-align: center;
}

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

.nav__mobile-footer {
  position: absolute;
  bottom: var(--sp-12);
  display: flex;
  gap: var(--sp-8);
}

.nav__mobile-social {
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  transition: color var(--duration-base) var(--ease-out);
}

.nav__mobile-social:hover {
  color: var(--color-gold);
}