* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Poppins', sans-serif;
    }
    body {
      background-color: #f8f9fa;
      color: #212529;
    }
    header {
      background-color: #1e1e2f;
      padding: 20px;
      color: white;
      text-align: center;
    }
    nav {
      background-color: #2e2e42;
    }
    .navbar-toggler {
      border: none;
      background: none;
    }
    .nav-item{
        margin-top:5px;
    }
    .nav-links a {
      color: white;
      text-decoration: none;
      font-weight: 500;
      margin: 0 15px;
      padding: 10px 15px;
      border-radius: 5px;
      transition: background-color 0.3s;
    }
    .nav-links a:hover {
      background-color: rgba(255, 255, 255, 0.1);
      text-decoration: none;
    }
    .nav-links a.active {
      background-color: #0d6efd;
      color: white;
    }
    .login a {
      color: white;
      font-weight: 500;
      text-decoration: none;
      margin-left: 15px;
      padding: 10px 15px;
      border-radius: 5px;
      transition: background-color 0.3s;
    }
    .login a:hover,
    .login a.active {
      background-color: #0d6efd;
      color: white;
      text-decoration: none;
    }
    .hero {
      text-align: center;
      padding: 50px 20px;
      background: linear-gradient(120deg, #89f7fe 0%, #66a6ff 100%);
      color: white;
    }
    .section {
      padding: 40px 20px;
    }
    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
    }
    .card {
      background-color: white;
      border-radius: 12px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      padding: 20px;
      width:100%;
      transition: transform 0.2s;
    }
    .card:hover {
      transform: scale(1.03);
    }
    footer {
      text-align: center;
      padding: 20px;
      background-color: #1e1e2f;
      color: white;
    }
    #loading-spinner {
      display: flex;
      align-items: center;
      justify-content: center;
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background-color: rgba(255, 255, 255, 0.8);
      z-index: 9999;
    }