html {
  scroll-behavior: smooth;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.site-header__logo {
  display: block;
  flex-shrink: 0;
}

.site-header__logo img {
  width: 137px;
  height: auto;
}

.site-header__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 100px;
  border: 1px solid var(--color-white);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  white-space: nowrap;
  transition: background-color 0.2s ease;
}

.nav__link:hover,
.nav__link:focus-visible {
  background: rgba(255, 255, 255, 0.25);
}

.site-header__burger {
  display: none;
  flex-shrink: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-white);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
}

.site-header__burger-line {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-black);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.site-header__burger[aria-expanded="true"] .site-header__burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__burger[aria-expanded="true"] .site-header__burger-line:nth-child(2) {
  opacity: 0;
}

.site-header__burger[aria-expanded="true"] .site-header__burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__logo > img:nth-child(2) {
  display: none;
}


@media (max-width: 900px) {
  .site-header__nav {
    gap: 8px;
  }

  .site-header__logo > img:nth-child(1) {
    display: none;
  }

  .site-header__logo > img:nth-child(2) {
    display: block;
  }



  .nav__link {
    padding: 10px 16px;
    font-size: 14px;
  }

  body {
    padding-top: 96px;
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    justify-content: space-between;
    padding: 12px 20px;
    background: rgba(255, 253, 252, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(27, 14, 17, 0.08);
  }

  .site-header__logo img {
    width: 96px;
  }

  .site-header__burger {
    position: relative;
    z-index: 51;
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    top: 81px;
    left: 16px;
    right: 16px;
    z-index: 999;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 16px;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 16px 40px rgba(27, 14, 17, 0.18);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  }

  .site-header__nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav__link {
    width: 100%;
    border-color: rgba(27, 14, 17, 0.1);
    background: transparent;
    color: var(--color-black);
  }

  .nav__link:hover,
  .nav__link:focus-visible {
    background: rgba(27, 14, 17, 0.06);
  }
}