body {
      font-family: Arial, sans-serif;
      margin: 0;
      background: #f0f0f0;
    }

    .gallery {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 60px;
      padding: 40px;
    }

    .gallery img {
      width: 100%;
      height: auto;
      cursor: pointer;
      border-radius: 8px;
      transition: transform 0.3s;
    }

    .gallery img:hover {
      transform: scale(1.05);
    }

    /* Modal styles */
    .modal {
      display: none;
      position: fixed;
      z-index: 999;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: rgba(0, 0, 0, 0.9);
      justify-content: center;
      align-items: center;
    }

    .modal img {
      max-width: 90%;
      max-height: 80vh;
      border-radius: 10px;
    }

    .nav-btn {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      color: white;
      font-size: 2em;
      background: rgba(0,0,0,0.5);
      border: none;
      padding: 10px;
      cursor: pointer;
      z-index: 1000;
    }

    .prev {
      left: 20px;
    }

    .next {
      right: 20px;
    }

    .close {
      position: absolute;
      top: 20px;
      right: 30px;
      font-size: 2em;
      color: white;
      cursor: pointer;
    }

    @media (max-width: 768px) {
      .gallery {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 480px) {
      .gallery {
        grid-template-columns: 1fr;
      }
    }