.nav {
  position: sticky;
  top: 0;
  z-index: 46;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem clamp(1.25rem, 4vw, 3rem);
  background: var(--text);
  border-bottom: 1px solid var(--accent-deep);
  transition:
    box-shadow 0.25s ease,
    padding 0.25s ease;
}

.nav--scrolled {
  box-shadow: 0 8px 24px -18px rgba(0, 0, 0, 0.45);
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
}

.nav__mark {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: 1.3rem;
  color: var(--surface);
  letter-spacing: 0.01em;
}

.nav__logo {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  flex-shrink: 0;
  object-fit: cover;
  object-position: 55% 35%;
}

.nav__mark-text span {
  color: var(--accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  flex-wrap: wrap;
}

.nav__links a {
  position: relative;
  font-size: 0.8rem;
  font-weight: var(--fw-semibold);
  color: rgba(255, 255, 255, 0.7);
  padding-bottom: 0.3rem;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav__links a:hover {
  color: var(--surface);
}

.nav__links a.is-active {
  color: var(--surface);
}

.nav__links a.is-active::after {
  transform: scaleX(1);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.nav__social {
  width: 2.1rem;
  height: 2.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent-deep);
  border-radius: 50%;
  color: var(--surface);
  font-size: 1rem;
  transition:
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.nav__social:hover {
  border-color: var(--accent);
  color: var(--accent-soft);
  transform: translateY(-1px);
}

.nav .btn--primary {
  padding: 0.6rem 1.3rem;
  font-size: 0.82rem;
}

.nav__toggle {
  display: none;
  position: relative;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  color: var(--surface);
  font-size: 1.2rem;
}

.nav__toggle-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transform: rotate(0deg) scale(1);
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
}

.nav__toggle-icon--close {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
  color: var(--accent);
}

.nav__toggle.is-open .nav__toggle-icon--open {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

.nav__toggle.is-open .nav__toggle-icon--close {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 45;
  display: flex;
  visibility: hidden;
  background: var(--text);
  clip-path: circle(0% at calc(100% - 2.9rem) 2.5rem);
  transition:
    clip-path 0.6s cubic-bezier(0.65, 0, 0.35, 1),
    visibility 0s linear 0.6s;
}

.mobile-menu.is-open {
  visibility: visible;
  clip-path: circle(150% at calc(100% - 2.9rem) 2.5rem);
  transition:
    clip-path 0.6s cubic-bezier(0.65, 0, 0.35, 1),
    visibility 0s linear 0s;
}

.mobile-menu__inner {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.6rem;
  padding: 6rem 2rem 3rem;
  overflow-y: auto;
}

.mobile-menu__links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  counter-reset: mobile-menu-item;
}

.mobile-menu__links a {
  position: relative;
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 5.5vw, 1.8rem);
  font-weight: var(--fw-bold);
  color: var(--surface);
  padding: 0.75rem 0.5rem 0.75rem 2.1rem;
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.35s ease,
    transform 0.35s ease,
    color 0.2s ease;
}

.mobile-menu__links a::before {
  counter-increment: mobile-menu-item;
  content: counter(mobile-menu-item, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  color: var(--accent);
  opacity: 0.6;
}

.mobile-menu__links a.is-active {
  color: var(--accent);
}

.mobile-menu.is-open .mobile-menu__links a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__links a:nth-child(1) {
  transition-delay: 0.14s;
}

.mobile-menu__links a:nth-child(2) {
  transition-delay: 0.18s;
}

.mobile-menu__links a:nth-child(3) {
  transition-delay: 0.22s;
}

.mobile-menu__links a:nth-child(4) {
  transition-delay: 0.26s;
}

.mobile-menu__links a:nth-child(5) {
  transition-delay: 0.3s;
}

.mobile-menu__links a:nth-child(6) {
  transition-delay: 0.34s;
}

.mobile-menu__links a:nth-child(7) {
  transition-delay: 0.38s;
}

.mobile-menu__links a:nth-child(8) {
  transition-delay: 0.42s;
}

.mobile-menu__links a:nth-child(9) {
  transition-delay: 0.46s;
}

.mobile-menu__foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
  transition-delay: 0.5s;
}

.mobile-menu.is-open .mobile-menu__foot {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__social {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--surface);
  opacity: 0.75;
  font-size: 0.9rem;
  transition: opacity 0.2s ease;
}

.mobile-menu__social:hover {
  opacity: 1;
}

@media (max-width: 900px) {
  .nav__toggle {
    display: flex;
  }
}

@media (max-width: 1024px) {
  .nav__logo {
    width: 2.1rem;
    height: 2.1rem;
  }
}

@media (max-width: 900px) {
  .nav__links {
    display: none;
  }

  .nav__logo {
    width: 2rem;
    height: 2rem;
  }
}

@media (max-width: 768px) {
  .nav__logo {
    width: 1.9rem;
    height: 1.9rem;
  }
}

@media (max-width: 480px) {
  .nav {
    padding: 1rem clamp(1rem, 5vw, 1.5rem);
  }

  .nav__logo {
    width: 1.75rem;
    height: 1.75rem;
  }

  .nav__social {
    display: none;
  }

  .nav .btn--primary {
    padding: 0.55rem 1rem;
    font-size: 0.76rem;
  }

  .mobile-menu {
    clip-path: circle(0% at calc(100% - 2.1rem) 2.3rem);
  }

  .mobile-menu.is-open {
    clip-path: circle(150% at calc(100% - 2.1rem) 2.3rem);
  }

  .mobile-menu__inner {
    justify-content: flex-start;
    gap: 1.6rem;
    padding: 6.5rem 1.75rem 2.5rem;
  }

  .mobile-menu__links {
    gap: 0.15rem;
  }

  .mobile-menu__links a {
    font-size: clamp(1rem, 5vw, 1.2rem);
    padding: 0.5rem 0.5rem 0.5rem 1.7rem;
  }
}

@media (max-width: 320px) {
  .nav__logo {
    width: 1.6rem;
    height: 1.6rem;
  }

  .nav__mark {
    font-size: 1.05rem;
    gap: 0.4rem;
  }

  .nav .btn--primary {
    padding: 0.5rem 0.75rem;
    font-size: 0.7rem;
  }

  .mobile-menu__inner {
    padding: 6rem 1.5rem 2rem;
  }

  .mobile-menu__links a {
    font-size: 0.95rem;
    padding: 0.4rem 0.4rem 0.4rem 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-menu {
    transition: visibility 0s linear;
  }

  .mobile-menu.is-open {
    transition: visibility 0s linear;
  }

  .nav__toggle-icon,
  .mobile-menu__links a,
  .mobile-menu__foot {
    transition: none;
  }
}