body {
    padding-top: 70px;
    background-color: #f8f9fa;
    
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
  
  main {
    flex: 1;
  }
  
  .portfolio-header {
    text-align: center;
    margin-bottom: 40px;
  }
  
  .portfolio-header h1 {
    font-size: 3rem;
    font-weight: bold;
  }
  
  .portfolio-header h2 {
    font-size: 1.5rem;
    color: #6c757d;
  }
  .section-title {
    margin-top: 40px;
    margin-bottom: 20px;
    border-bottom: 2px solid #dee2e6;
    padding-bottom: 10px;
  }
  .card-title a {
    text-decoration: none;
    color: #0d6efd;
  }
  .card-title a:hover {
    text-decoration: underline;
  }
  .placeholder {
    height: 200px;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    border: 2px dashed #ced4da;
    border-radius: 5px;
  }
  .footer {
    background-color: #343a40;
    color: #fff;
    padding: 20px 0;
    margin-top: 60px;
  }
  .footer a {
    color: #ffc107;
    text-decoration: none;
  }
  .footer a:hover {
    text-decoration: underline;
  }
  
  .project-header {
    background-color: #fff;
    padding: 40px 0;
    margin-bottom: 40px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  .project-header h1 {
    font-size: 2.5rem;
    font-weight: bold;
  }
  .project-header p {
    font-size: 1.2rem;
    color: #6c757d;
  }
  .section-title {
    margin-top: 40px;
    margin-bottom: 20px;
    border-bottom: 2px solid #dee2e6;
    padding-bottom: 10px;
    font-size: 1.75rem;
    font-weight: 600;
  }
  .tech-badge {
    margin: 2px;
  }