.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: padding 0.4s var(--ease-out), background 0.4s, backdrop-filter 0.4s;
}

.nav.is-scrolled {
  padding: 0.75rem 0;
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
}

.nav__container {
  width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  z-index: 10;
}

.nav__logo-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--leaf), var(--gold));
  color: var(--forest);
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 700;
}

.nav__logo-text {
  transition: opacity 0.3s;
}

.nav.is-scrolled .nav__logo-text {
  opacity: 0.9;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  position: relative;
  padding: 0.5rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 999px;
  transition: color 0.3s, background 0.3s;
}

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

.nav__link.active {
  background: rgba(121, 197, 106, 0.12);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--gold);
  border-radius: 50%;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 28px;
  z-index: 10;
}

.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

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

  .nav__menu {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s, visibility 0.4s;
  }

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

  .nav__list {
    flex-direction: column;
    gap: 1.5rem;
  }

  .nav__link {
    font-size: 1.5rem;
    padding: 0.75rem 1.5rem;
  }
}


.nav__logo-img {
  height: 28px;
  width: auto;
  max-width: 140px;
  display: block;
  object-fit: contain;
  transition: height 0.3s var(--ease-out);
}

.nav.is-scrolled .nav__logo-img {
  height: 24px;
  max-width: 120px;
}

.footer__logo .nav__logo-img {
  height: 26px;
  max-width: 130px;
}

@media (max-width: 640px) {
  .nav__logo-img {
    height: 22px;
    max-width: 110px;
  }
}