body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #86ebf8, #ffffff);
    margin: 0;
    padding: 0;
    color: #0d47a1;
  }
  
  /* Navigation Bar Styles */
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  
  
  .navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
  }
  
  .navbar-icon {
    font-size: 1.8rem;
  }
  
  .navbar-title {
    font-family: 'Poppins', sans-serif;
  }

  .navbar-title-link {
    color: white;
    text-decoration: none;
  }

  .navbar-title-link:hover {
    background-color: rgba(251, 252, 252, 0.15);
    color: rgb(253, 253, 253);
  }
  
  .navbar-tabs {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
  }
  
  .navbar-tab a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
  }
  
  .navbar-tab a i {
    font-size: 1.1rem;
  }
  
  .navbar-tab a:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
  }
  
  .navbar-tab.active a {
    background-color: rgba(255, 255, 255, 0.25);
    color: white;
    font-weight: 600;
  }
  
  .container {
    max-width: 900px;
    margin: 40px auto;
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(13, 71, 161, 0.2);
    animation: fadeIn 1s ease;
  }
  
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  h1 {
    color: #1565c0;
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-align: center;
  }
  
  h2 {
    color: #1976d2;
    border-left: 4px solid #64b5f6;
    padding-left: 10px;
    margin-top: 30px;
  }
  
  h3 {
    color: #1e88e5;
    margin-top: 25px;
  }
  
  p {
    line-height: 1.8;
    font-size: 1rem;
    margin: 10px 0;
  }
  
  ul, ol {
    padding-left: 20px;
    margin: 15px 0;
  }
  
  li {
    margin-bottom: 10px;
    font-size: 1rem;
  }
  
  code {
    background: #e3f2fd;
    padding: 4px 8px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    color: #0d47a1;
  }
  
  @media (max-width: 768px) {
    .container {
      margin: 20px;
      padding: 20px;
    }
  
    h1 {
      font-size: 2rem;
    }
  
    .navbar {
      flex-direction: column;
      align-items: flex-start;
      padding: 1rem;
    }
  
    .navbar-tabs {
      flex-direction: column;
      width: 100%;
      gap: 0.5rem;
    }
  
    .navbar-tab a {
      width: 100%;
      justify-content: flex-start;
    }
  }