/* Навигация */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .5s var(--ease), border-color .5s var(--ease), backdrop-filter .5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav::before {
  content: "";
  position: absolute;
  inset: 0 0 -44px;
  z-index: -1;
  background: linear-gradient(180deg, rgba(13, 11, 8, .62), rgba(13, 11, 8, 0));
  pointer-events: none;
  opacity: 1;
  transition: opacity .5s var(--ease);
}
.nav--scrolled::before { opacity: 0; }
.nav--scrolled {
  background: rgba(13, 11, 8, .72);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  backdrop-filter: blur(18px) saturate(1.2);
  border-bottom-color: var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 48px);
  height: 84px;
}
.nav--scrolled .nav__inner { height: 68px; }
.nav__inner { transition: height .5s var(--ease); }

.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
}
.nav__mark { width: 34px; height: 34px; flex: none; }
.nav__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: .02em;
}

.nav__links {
  display: flex;
  gap: clamp(18px, 2.2vw, 34px);
}
.nav__links a {
  position: relative;
  font-size: .88rem;
  font-weight: 500;
  color: var(--ivory-70);
  transition: color .4s var(--ease);
  padding: 6px 0;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--grad-gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .5s var(--ease);
}
.nav__links a:hover, .nav__links a.is-active { color: var(--ivory); }
.nav__links a:hover::after, .nav__links a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__cta { padding: 12px 26px; font-size: .86rem; }

/* «Связаться» в списке ссылок — только для мобильного меню:
   на десктопе эту роль играет пилюля .nav__cta */
.nav__links .nav__link-contact { display: none; }

.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 44px; height: 44px;
  align-items: center;
}
.nav__burger span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--ivory);
  transition: transform .4s var(--ease), opacity .4s var(--ease);
}

@media (max-width: 860px) {
  .nav__links {
    position: fixed;
    inset: 0;
    top: 68px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    background: rgba(13, 11, 8, .96);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .5s var(--ease);
  }
  .nav--open .nav__links { opacity: 1; pointer-events: auto; }
  .nav__links a { font-size: 1.4rem; font-family: var(--font-display); }
  .nav__links .nav__link-contact { display: block; color: var(--gold); }
  .nav--open { background: rgba(13, 11, 8, .96); }
  .nav--open .nav__burger span:first-child { transform: translateY(4.25px) rotate(45deg); }
  .nav--open .nav__burger span:last-child { transform: translateY(-4.25px) rotate(-45deg); }
  .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .nav__inner { height: 68px; }
}