html {
      scroll-behavior: smooth;
    }
    body {
      margin: 0;
      font-family: 'Segoe UI', sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: #fff;
    }

    nav {
      background: #1e40af;
      color: white;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 20px;
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    nav .logo {
      font-weight: bold;
      font-size: 1.2rem;
    }

    nav ul {
      list-style: none;
      display: flex;
      gap: 20px;
      margin: 0;
      padding: 0;
      align-items: center;
    }

    nav ul li a {
      color: white;
      text-decoration: none;
      font-weight: 500;
      transition: opacity 0.3s;
    }

    nav ul li a:hover {
      opacity: 0.8;
    }

    nav ul li a i {
      font-size: 1.1rem;
    }

    header {
      background: linear-gradient(to right, #3b82f6, #6366f1);
      color: #fff;
      padding: 20px;
      text-align: center;
    }

    .logo-placeholder {
      width: 120px;
      height: 120px;
      background: #fff;
      border-radius: 50%;
      margin: 20px auto;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: #3b82f6;
      font-size: 2rem;
      background-image: url('../images/nikki.jpg');
      background-size: cover;
      background-position: center;
    }

    header h1 {
      font-size: 2.5rem;
      margin-bottom: 10px;
    }

    header p {
      font-size: 1.2rem;
      margin-bottom: 20px;
    }

    .btn {
      display: inline-block;
      background: #fff;
      color: #3b82f6;
      padding: 12px 24px;
      font-weight: bold;
      border-radius: 30px;
      text-decoration: none;
      transition: background 0.3s ease;
    }

    .btn:hover {
      background: #f3f4f6;
    }

    section {
      padding: 60px 20px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .section-title {
      font-size: 2rem;
      margin-bottom: 40px;
      text-align: center;
    }

    .services, .portfolio {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      justify-content: center;
      text-align: center;
    }

    .service, .project {
      flex: 1 1 300px;
      padding: 20px;
      border: 1px solid #ddd;
      border-radius: 10px;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .project:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
      background-color: #f9fafb;
    }

    .about {
      background: linear-gradient(to right, #fdf2f8, #f0fdf4);
      text-align: center;
      padding: 100px 20px;
      border-radius: 20px;
      margin-top: 40px;
    }

    .about h2 {
      font-size: 2.2rem;
      color: #6b21a8;
    }

    .about p {
      font-size: 1.1rem;
      margin-bottom: 20px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .skills {
      background-color: #f0f4f8;
      text-align: center;
      padding: 40px 20px 100px;
      border-radius: 10px;
    }

    .skills ul {
      list-style: none;
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 15px;
    }

    .skills li {
      background: #fff;
      padding: 10px 20px;
      border-radius: 20px;
      border: 1px solid #ccc;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1rem;
    }

    .skills i {
      font-size: 1.2rem;
    }

    .contact {
      background: #3b82f6;
      color: white;
      text-align: center;
      padding: 60px 20px;
    }

    .contact a {
      background: #fff;
      color: #3b82f6;
      padding: 12px 24px;
      border-radius: 30px;
      font-weight: bold;
      text-decoration: none;
    }

    footer {
      text-align: center;
      padding: 20px;
      font-size: 0.9rem;
      color: #777;
    }

    footer a {
      color: inherit;
      text-decoration: none;
      margin: 0 10px;
    }

    footer a:hover {
      opacity: 0.8;
    }

    @media (max-width: 768px) {
      nav ul {
        flex-direction: column;
        gap: 10px;
        margin-top: 10px;
      }
      header h1 {
        font-size: 2rem;
      }
      .services, .portfolio {
        flex-direction: column;
        align-items: center;
      }
    }