body {
    cursor: url('caliper_cursor.png'), auto;
  }



    :root {
      --nav-bg: #001f3f;
      --nav-link: #fcbf49;
      --nav-link-hover: #e6aa30;
      --primary-color: #001f3f;
      --accent-color: #fcbf49;
      --background-gradient: linear-gradient(135deg, #f2f0e6 0%, #d6c796 100%);
      --text-color: #001f3f;
      --shadow-color: rgba(0, 31, 63, 0.2);
      --font-family: 'Poppins', sans-serif;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-family);
      background: var(--background-gradient);
      color: var(--text-color);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    header {
      background-color: var(--nav-bg);
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 20px;
      box-shadow: 0 2px 6px var(--shadow-color);
      position: sticky;
      top: 0;
      z-index: 1000;
      flex-wrap: wrap;
    }

    .header-left {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--nav-link);
      letter-spacing: 0.1em;
      text-shadow: 0 0 5px var(--accent-color);
      text-transform: uppercase;
      white-space: nowrap;
      font-family: 'Poppins', sans-serif;
    }

    nav {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
    }

    nav a {
      color: var(--nav-link);
      text-decoration: none;
      font-weight: 600;
      font-size: 1.05rem;
      padding: 8px 16px;
      border-radius: 8px;
      transition: 0.3s ease;
    }

    nav a:hover,
    nav a:focus {
      background-color: var(--nav-link-hover);
      color: var(--nav-bg);
      box-shadow: 0 0 10px var(--nav-link-hover);
      outline: none;
    }

    nav a[aria-current="page"] {
      background-color: var(--nav-link);
      color: var(--nav-bg);
      font-weight: 700;
      box-shadow: 0 0 10px var(--nav-link);
    }

    main {
      flex: 1;
      max-width: 960px;
      margin: 70px auto 100px;
      padding: 0 20px;
    }

    h1 {
      font-size: 3rem;
      font-weight: 800;
      color: var(--primary-color);
      text-align: center;
      margin-bottom: 40px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      text-shadow: 0 0 5px var(--accent-color);
    }

    .project {
      background: #ffffffcc;
      border-left: 6px solid var(--accent-color);
      border-radius: 20px;
      padding: 30px;
      margin-bottom: 10px;
      box-shadow: 0 10px 30px var(--shadow-color);
      transition: transform 0.3s ease;
    }

    .project:hover {
      transform: translateY(-5px);
    }

    .project h2 {
      font-size: 1.6rem;
      color: var(--primary-color);
      margin-bottom: 5px;
    }

    .gallery {
      display: flex;
      gap: 15px;
      flex-wrap: wrap;
      margin-bottom: 15px;
      justify-content: center;
    }

    .gallery img {
      width: 180px;
      height: 120px;
      object-fit: cover;
      border-radius: 10px;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
      cursor: zoom-in;
    }

    .description {
      max-height: 0;
      overflow: hidden;
      opacity: 0;
      transition: max-height 0.5s ease, opacity 0.5s ease;
      margin-top: 0;
    }

    .description.open {
      max-height: 2000px;
      opacity: 1;
      margin-top: 15px;
    }

    .description p {
      color: #2b3a58;
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 15px;
    }

    .toggle-btn {
      display: block;
      margin: 20px auto 0;
      padding: 10px 25px;
      background-color: var(--accent-color);
      color: var(--primary-color);
      font-weight: 700;
      font-size: 1rem;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: 0.3s ease;
    }

    .toggle-btn:hover {
      background-color: var(--nav-link-hover);
    }

    /* Lightbox */
    #lightbox {
      display: none;
      position: fixed;
      z-index: 9999;
      top: 0; left: 0;
      width: 100%; height: 100%;
      background: rgba(0,0,0,0.85);
      justify-content: center;
      align-items: center;
      cursor: zoom-out;
    }

    #lightbox img {
      max-width: 90%;
      max-height: 90%;
      border-radius: 10px;
      box-shadow: 0 0 40px rgba(0,0,0,0.5);
    }

    @media (max-width: 600px) {
      .header-left {
        font-size: 1.4rem;
      }

      nav {
        justify-content: center;
        gap: 10px;
      }

      nav a {
        font-size: 0.95rem;
        padding: 6px 12px;
      }

      h1 {
        font-size: 2.3rem;
      }

      .gallery img {
        width: 100%;
        height: auto;
      }

      .project {
        padding: 20px;
      }

      .description p {
        font-size: 0.95rem;
      }
    }