/* Logo */
img {
    width: 60px;
    background-size: contain;
  }
  
  /* Header */
  header {
    width: 100%;
    height: 80px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 100px;
    position: relative;
    z-index: 2;
  }
  
  .fixed-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
  }
  
  /* Logo container */
  .logo {
    font-size: 28px;
    font-weight: bold;
    color: #00308F;
    filter: brightness(1.5) contrast(1.0);
  }
  
  /* Hamburger menu */
  .hamburger {
    display: none;
    cursor: pointer;
  }
  
  .hamburger .line {
    width: 30px;
    height: 3px;
    background: #00308F;
    margin: 6px 0;
  }
  
  /* Navbar */
  .nav-bar ul {
    display: flex;
    list-style: none;
  }
  
  .nav-bar ul li {
    margin: 0 10px;
  }
  
  .nav-bar ul li a {
    display: block;
    color: #00308F;
    font-size: 18px;
    padding: 12px 20px;
    border-radius: 25px;
    transition: 0.3s;
    text-decoration: none;
    position: relative;
  }
  
  /* Hover underline */
  .nav-bar ul li a::after {
    content: "";
    position: absolute;
    bottom: 6px;
    left: 20px;
    width: 0%;
    height: 2px;
    background-color: #00308F;
    transition: width 0.3s ease;
  }
  
  .nav-bar ul li a:hover::after {
    width: 60%;
  }
  
  .nav-bar ul li a.active {
    font-weight: bold;
  }
  
  /* Responsive breakpoints */
  @media only screen and (max-width: 1320px) {
    header {
      padding: 0 50px;
    }
  }
  
  @media only screen and (max-width: 1100px) {
    header {
      padding: 0 30px;
    }
  }
  
  @media only screen and (max-width: 900px) {
    .hamburger {
      display: block;
    }
  
    .nav-bar {
      height: 0;
      position: absolute;
      top: 80px;
      left: 0;
      right: 0;
      width: 100vw;
      background: #00308F;
      transition: 0.2s;
      overflow: hidden;
    }
  
    .nav-bar.active {
      height: 450px;
    }
  
    .nav-bar ul {
      display: block;
      width: fit-content;
      margin: 80px auto 0 auto;
      text-align: center;
      transition: 0.5s;
      opacity: 0;
    }
  
    .nav-bar.active ul {
      opacity: 1;
    }
  
    .nav-bar ul li a {
      margin-bottom: 12px;
      color: #f0f1f8;
    }
  
    .nav-bar ul li a::after {
      background-color: #f0f1f8;
    }
  }