body {
        font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
        background-color: #f8f9fa;
      }

      header img {
        max-height: 100px;
        object-fit: contain;
      }

      nav a.nav-link {
        color: #333;
        font-weight: 500;
      }

      nav a.nav-link:hover {
        text-decoration: underline;
      }

      footer {
        background-color: #f1f1f1;
        padding: 1rem 0;
        text-align: center;
        font-size: 0.9rem;
        color: #666;
      }

      main {
        min-height: 400px;
        padding: 2rem 0;
      }