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

  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0f0f0f;
    color: #fff;
    line-height: 1.6;
    overflow-x: hidden;
  }

  nav {
    width: 100%;
    background: rgba(0, 0, 0, 0.85);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    z-index: 1000;
  }

  nav ul {
    display: flex;
    gap: 1.5rem;
  }

  nav ul li {
    list-style: none;
  }

  nav ul li a {
    color: #00ff88;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
  }

  nav ul li a:hover {
    color: #fff;
  }

  .container {
    padding: 100px 2rem 2rem;
    max-width: 1000px;
    margin: auto;
  }

  .project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
  }

  .project {
    background: #1a1a1a;
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #333;
    transition: transform 0.3s, box-shadow 0.3s;
  }

  .project:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 10px #00ff88;
  }

  .project h3 {
    color: #00ff88;
    margin-bottom: 0.5rem;
  }

  .project p {
    font-size: 14px;
    color: #ccc;
  }

  .project a {
    color: #00ff88;
    text-decoration: underline;
    display: inline-block;
    margin-top: 1rem;
  }

  footer {
    text-align: center;
    padding: 2rem;
    font-size: 14px;
    color: #888;
    border-top: 1px solid #333;
    margin-top: 3rem;
  }

  @media (max-width: 768px) {
    nav {
      bottom: 0;
      top: auto;
    }
    nav ul {
      flex-direction: row;
      justify-content: center;
    }
  }
  .demo {
    gap: 2rem;
  }