.site-header {
  position: relative;
  background-color: var(--color-white);
  border-bottom: 2px solid var(--color-gray-border);
}

.main-navigation {
  height: 5rem;
  padding: 0.6rem 2.3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.logo-container {
  display: flex;
  align-items: center;
  width: 3rem;
  height: 2rem;
}

.desktop-nav-menu {
  display: none;
  align-items: center;
  gap: 2.2rem;
}

.nav-link {
  font-weight: 600;
  font-size: 14px;
  line-height: 30px;
  padding: 0.5rem 0;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.signup-container {
  display: none;
}

.login-container {
  display: flex;
}

.user-info {
  display: flex;
  align-items: center;
  margin-right: 1rem;
}

.welcome-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-black);
}

.username-link {
  color: var(--color-primary);
  text-decoration: underline;
  font-weight: 600;
}

.username-link:hover {
  color: var(--color-primary-hover);
}

.mobile-menu-checkbox {
  display: none;
}

.hamburger-button {
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1001;
  padding: 1rem 0.5rem 0.5rem 0.5rem;
}

.hamburger-icon {
  width: 2rem;
  height: 2px;
  background-color: var(--color-black);
  border-radius: 2px;
  position: relative;
  transition: all 0.3s ease;
}

.hamburger-icon::before,
.hamburger-icon::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  background-color: var(--color-black);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger-icon::before {
  top: -8px;
}

.hamburger-icon::after {
  bottom: -8px;
}

.mobile-menu-checkbox:checked + .hamburger-button .hamburger-icon {
  background-color: transparent;
}

.mobile-menu-checkbox:checked + .hamburger-button .hamburger-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-menu-checkbox:checked + .hamburger-button .hamburger-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

.mobile-nav-menu {
  position: fixed;
  top: 0;
  left: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  padding: 100px 24px 40px 24px;
  background-color: var(--color-white);
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  z-index: 1000;
  transition: left 0.3s ease-in-out;
  overflow-y: auto;
}

.mobile-menu-checkbox:checked ~ .mobile-nav-menu {
  left: 0;
}

@media (max-width: 56.24rem) {
  .hamburger-button {
    display: flex;
    position: relative;
  }

  .nav-right {
    display: none;
  }

  .main-navigation {
    padding: 0.5rem 1rem;
    height: 4rem;
  }

  .nav-left {
    gap: 0.75rem;
  }
}

@media (min-width: 56.25rem) {
  .signup-container {
    display: flex;
  }

  .desktop-nav-menu {
    display: flex;
  }

  .mobile-nav-menu {
    display: none;
  }

  .hamburger-button {
    display: none;
  }
}