/* ── NAV ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--px);
  transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(238,238,238,0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom-color: var(--border);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-logo img {
  height: 36px;
  width: auto;
  transition: filter 0.4s;
}
/* Mobile: hero is always dark, so logo is always white unless scrolled */
.nav:not(.scrolled) .nav-logo img {
  filter: brightness(0) invert(1);
}
.nav.scrolled .nav-logo img {
  filter: none;
}

/* Links — hidden on mobile by default */
.nav-links {
  display: none;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
    align-items: center;
    gap: 2.2rem;
  }
}

.nav-links a {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  transition: color 0.3s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--accent); }
.nav.scrolled .nav-links a { color: var(--muted); }
.nav.scrolled .nav-links a:hover { color: var(--text); }
.nav-links a.active {
  color: #fff;
  position: relative;
}
.nav.scrolled .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
}

/* CTA — hidden on mobile by default */
.nav-cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav-cta {
    display: inline-flex;
    background: var(--accent) !important;
    color: var(--text) !important;
    padding: 0.55rem 1.4rem !important;
    border-radius: var(--radius-pill) !important;
    font-weight: 700 !important;
    font-size: 0.72rem !important;
    letter-spacing: 0.1em !important;
    text-transform: uppercase !important;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s !important;
    white-space: nowrap;
    flex-shrink: 0;
  }
}

.nav-cta:hover {
  background: var(--accent-hover) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 6px 24px rgba(241,253,115,0.45) !important;
  color: var(--text) !important;
}

/* Mobile hamburger — shown by default on mobile */
.nav-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  transition: background 0.3s, transform 0.3s;
}
.nav.scrolled .nav-hamburger span { background: var(--text); }

@media (min-width: 1024px) {
  .nav-hamburger { display: none; }
}

/* Mobile menu overlay */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--dark);
  z-index: 199;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  color: #fff;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-mobile a:hover { color: var(--accent); }
.nav-mobile .nav-mobile-cta {
  margin-top: 1rem;
  background: var(--accent);
  color: #000;
  padding: 0.9rem 2.5rem;
  border-radius: var(--radius-pill);
  font-size: 1rem;
}