/* Navigation */

  .navigation-header {
    transition: background .2s;
  }

  .navigation-header {
    position: fixed;
    width: 100%;
    top: 0;
    padding: 12px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    /* ===== FIX: Ensure nav is always on top of other content ===== */
    z-index: 1000;
  }
  
  nav {
    width: 100%;
    max-width: 1600px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .logo-container > a {
    color: #9eebda;
    text-decoration: none;
    font-weight: 700;
    font-size: 2rem;
  }
  .navigation-items {
    display: flex;
    gap: 40px;
  }
  .navigation-items > a {
    color: #9eebda;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: .4s ease-in-out;
  }
  .navigation-items > a:hover {
    color: white;
  }
  .hamburger {
    display: none;
    font-size: 20px;
    font-weight: 800;
    color: white;
  }

  /* ======================================= */
  /* ===== RESPONSIVE & ENHANCED NAV   ===== */
  /* ======================================= */

  @media screen and (max-width:768px) {

    .navigation-header {
      background-color: #1d1727a9; /* Add slight transparency */
      /* ===== ENHANCEMENT: Add a modern blur effect ===== */
      -webkit-backdrop-filter: blur(5px);
      backdrop-filter: blur(5px);
    }

    .hamburger {
      display: block;
      position: relative;
      top: 5px;
      width: 44px;
      z-index: 1;
      -webkit-user-select: none;
      user-select: none;
    }
    
    .hamburger > input {
      display: block;
      width: 40px;
      height: 32px;
      position: absolute;
      cursor: pointer;
      opacity: 0%;
      z-index: 2;
    }

    .hamburger span {
      display: block;
      width: 33px;
      height: 4px;
      margin-bottom: 5px;
      position: relative;
      background: #9eebda; /* Brighter background for better visibility */
      border-radius: 3px;
      z-index: 1;
      transform-origin: 4px 0px;
      transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1),
          opacity 0.55s ease;
    }
  
    .hamburger span:first-child {
      transform-origin: 0% 0%;
    }
  
    .hamburger span:nth-child(4) {
      transform-origin: 0% 100%;
    }

    .hamburger input:checked ~ span {
        opacity: 1;
        transform: rotate(45deg) translate(-2px, -1px);
    }

    .hamburger input:checked ~ span:nth-child(3) {
        opacity: 0;
        transform: rotate(0deg) scale(0.2, 0.2);
    }

    .hamburger input:checked ~ span:nth-child(4) {
        transform: rotate(-45deg) translate(0, -1px);
    }

    .navigation-items {
      background-color: #1d1727;
      position: absolute;
      flex-direction: column;
      align-items: center;
      padding-top: 100px;
      gap: 80px;
      width: 100%;
      top: 60px;
      left: 0px;
      height: calc(100vh - 60px);
      transform-origin: 0% 0%;
      transform: translate(-100%, 0);
      transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1);
    }
    
    .navigation-items a {
      font-size: 2rem;
    }
  }