.header {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  background-color: transparent;
}

.header .logo2{
  display: none;
}

.header.scrolled,
.header.header-active {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header.scrolled .logo1,
.header.header-active .logo1{
  display: none;
}
.header.scrolled .logo2,
.header.header-active .logo2{
  display: block;
}

.header nav ul {
  display: flex;
  gap: 60px;
  list-style: none;
  border-bottom: 1px solid #fff;
  align-items: center;
  transition: border-color 0.3s ease;
}

.header.scrolled nav ul {
  border-bottom: 2px solid black;
}

.header nav ul li.active{
  border-bottom: 6px solid #fff;
  transition: border-color 0.3s ease;
}

.header.scrolled nav ul li.active,
.header.header-active nav ul li.active{
  border-bottom: 6px solid black;
}

.header nav a {
  color: #fff;
  font-weight: 500;
  font-size: 18px;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  height: 78px;
  padding: 0 10px;
}

.header.scrolled nav a,
.header.header-active nav a {
  color: black;
}


.mobile-menu-btn {
  display: none;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  position: absolute;
  width: 60px;
  height: 100%;
  right: 0;
  top: 0;
}


.mobile-menu-btn {
  width: 30px;
  height: 30px;
  position: relative;
  z-index: 101;
}

.hamburger-line {
  width: 21px;
  height: 2px;
  background-color: white;
  display: block;
  margin: 5px 0;
  transition: all 0.3s ease;
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header.scrolled .hamburger-line,
.header.header-active .hamburger-line{
  background-color: black;
}

/* Hamburger Menu Animation */
@keyframes waveIn {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  50% {
    opacity: 0.5;
    transform: translateY(-5px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  
  .header nav {
    position: fixed;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    left: 0;
    right: 0;
    background: #fff;
    padding: 1rem;
    display: none;
  }
  
  .header nav ul {
    flex-direction: column;
    border-bottom: 0px;
  }
  
  .mobile-menu-btn {
    display: block;
  }

  
  /* Mobile Navigation Styles */
  #main-nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 100;
    padding: 20px;

    &.menu-active {
      display: block;
    }

    ul {
      display: flex;
      flex-direction: column;
      gap: 20px;
      border: 0px;
    }

    li {
      opacity: 0;
      transform: translateY(20px);
    }

    li.menu-item-animate {
      animation: waveIn 0.5s ease forwards;
    }

   
  }
}