body.no-scroll {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

header {
  background-color: var(--gray-color);
  padding: 0 50px;
  position: relative;
  margin-bottom: 2rem;
}

.logo {
  width: 80px;
  cursor: pointer;
  transition: 2ms ease;
  transition: transform 0.3s ease;
}
.logo:hover {
  opacity: 0.75;
  transform: scale(1.05);
}

.nav-list {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.header-li {
  font-size: 1.25rem;
}

a {
  text-decoration: none;
  color: inherit;
  font-weight: 600;
}

a:hover {
  color: var(--main-color);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 3px;
  margin: 6px 0;
  background: currentColor;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
    z-index: 2001;
  }

  .logo {
    z-index: 2001;
  }

  .main-nav {
    position: fixed;
    inset: 0;
    background: var(--gray-color);
    display: flex;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 2000;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .header-li {
    font-size: 2rem;
  }
}

.hamburger.is-open span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}
@media screen and (max-width: 768px) {
  .logo {
    width: 64px;
  }
  .about-text {
    text-align: center;
  }
}