/* ===== BASIC RESET ===== */
    body {
      margin: 0;
      line-height: 1.6;
    }

    header {
      position: sticky;
      top: 0;
      background: #fff;
      border-bottom: 1px solid #ddd;
      padding: 10px 20px;
    }

    nav a {
      margin-right: 15px;
      text-decoration: none;
      color: #333;
    }

    section {
      padding: 6.5em 5ch;
      width: 100%;
    }

    h1, h2 {
      margin-top: 0;
    }

    .project {
      border: 1px solid #ddd;
      padding: 15px;
      margin-bottom: 10px;
      cursor: pointer;
    }

    .project-details {
      margin-top: 10px;
    }

    .visible {
      display: block;
    }

    footer {
      text-align: center;
      padding: 20px;
      border-top: 1px solid #ddd;
    }