:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --secondary: #4b5563;
      --light: #f9fafb;
      --dark: #111827;
      --accent: #8b5cf6;
      --success: #10b981;
    }
    
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    
    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
      line-height: 1.6;
      color: var(--dark);
      background-color: var(--light);
    }
    
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.3s ease;
    }
    
    a:hover {
      color: var(--primary-dark);
    }
    
    .container {
      width: 90%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    
    /* Header */
    header {
      padding: 1.5rem 0;
      position: fixed;
      width: 100%;
      top: 0;
      background-color: rgba(249, 250, 251, 0.9);
      backdrop-filter: blur(5px);
      z-index: 100;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    }
    
    nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .logo {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--dark);
    }
    
    .logo span {
      color: var(--primary);
    }
    
    .nav-links {
      display: flex;
      list-style: none;
    }
    
    .nav-links li {
      margin-left: 2rem;
    }
    
    .nav-links a {
      font-weight: 500;
      color: var(--secondary);
      transition: color 0.3s ease;
    }
    
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
    }
    
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--secondary);
      cursor: pointer;
    }
    
    /* Hero Section */
    .hero {
      padding: 10rem 0 5rem;
      display: flex;
      align-items: center;
      min-height: 100vh;
    }
    
    .hero-content {
      max-width: 650px;
    }
    
    .hero h1 {
      font-size: clamp(2rem, 6vw, 3.5rem);
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1.5rem;
    }
    
    .hero p {
      font-size: 1.25rem;
      color: var(--secondary);
      margin-bottom: 2rem;
    }
    
    .highlight {
      color: var(--primary);
    }
    
    .tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      margin-bottom: 2rem;
    }
    
    .tag {
      display: inline-block;
      background: rgba(37, 99, 235, 0.1);
      color: var(--primary);
      padding: 0.5rem 1rem;
      border-radius: 30px;
      font-size: 0.875rem;
      font-weight: 500;
    }
    
    .cta-buttons {
      display: flex;
      gap: 1rem;
    }
    
    .btn {
      display: inline-block;
      padding: 0.75rem 1.5rem;
      border-radius: 6px;
      font-weight: 500;
      font-size: 1rem;
      cursor: pointer;
      transition: all 0.3s ease;
    }
    
    .btn-primary {
      background-color: var(--primary);
      color: white;
      border: 1px solid var(--primary);
    }
    
    .btn-primary:hover {
      background-color: var(--primary-dark);
      color: white;
    }
    
    .btn-outline {
      background-color: transparent;
      color: var(--primary);
      border: 1px solid var(--primary);
    }
    
    .btn-outline:hover {
      background-color: rgba(37, 99, 235, 0.1);
    }
    
    /* Section styling */
    section {
      padding: 6rem 0;
    }
    
    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 3rem;
      text-align: center;
    }
    
    .section-subtitle {
      text-align: center;
      color: var(--secondary);
      font-size: 1.25rem;
      margin-top: -2rem;
      margin-bottom: 3rem;
    }
    
    /* Projects Section */
    .projects-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
      gap: 2rem;
    }
    
    .project-card {
      background-color: white;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    
    .project-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    }
    
    .project-img {
      height: 200px;
      background-color: #e5e7eb;
      overflow: hidden;
    }
    
    .project-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    
    .project-card:hover .project-img img {
      transform: scale(1.05);
    }
    
    .project-content {
      padding: 1.5rem;
    }
    
    .project-content h3 {
      font-size: 1.25rem;
      font-weight: 600;
      margin-bottom: 0.75rem;
    }
    
    .project-tech {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-bottom: 1rem;
    }
    
    .project-tech span {
      background-color: rgba(75, 85, 99, 0.1);
      color: var(--secondary);
      padding: 0.25rem 0.5rem;
      border-radius: 4px;
      font-size: 0.75rem;
    }
    
    .project-links {
      margin-top: 1rem;
      display: flex;
      gap: 1rem;
    }
    
    .project-links a {
      font-size: 0.875rem;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }
    
    /* About Section */
    .about-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    
    .about-img {
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }
    
    .about-img img {
      width: 100%;
      height: auto;
      display: block;
    }
    
    .about-content h2 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }
    
    .about-content p {
      margin-bottom: 1.5rem;
      color: var(--secondary);
    }
    
    .skills {
      margin-top: 2rem;
    }
    
    .skills h3 {
      font-size: 1.25rem;
      margin-bottom: 1rem;
    }
    
    .skills-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
    }
    
    .skill-item {
      background-color: white;
      padding: 0.75rem;
      border-radius: 6px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    
    .skill-icon {
      width: 1.5rem;
      height: 1.5rem;
      color: var(--primary);
    }
    
    /* Contact Section */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
    }
    
    .contact-info h3 {
      font-size: 1.5rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
    }
    
    .contact-links {
      margin-bottom: 2rem;
    }
    
    .contact-link {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-bottom: 1rem;
      color: var(--secondary);
      transition: color 0.3s ease;
    }
    
    .contact-link:hover {
      color: var(--primary);
    }
    
    .contact-icon {
      width: 1.25rem;
      height: 1.25rem;
    }
    
    .contact-form {
      background-color: white;
      padding: 2rem;
      border-radius: 8px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    }
    
    .form-group {
      margin-bottom: 1.5rem;
    }
    
    .form-group label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 500;
      color: var(--secondary);
    }
    
    .form-control {
      width: 100%;
      padding: 0.75rem;
      border: 1px solid #e5e7eb;
      border-radius: 6px;
      font-family: inherit;
      font-size: 1rem;
      transition: border-color 0.3s ease;
    }
    
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
    }
    
    textarea.form-control {
      min-height: 150px;
      resize: vertical;
    }

    /* Footer */
    footer {
      background-color: var(--dark);
      color: white;
      padding: 3rem 0;
    }
    
    .footer-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .footer-logo {
      font-size: 1.5rem;
      font-weight: 700;
    }
    
    .footer-logo span {
      color: var(--primary);
    }
    
    .social-links {
      display: flex;
      gap: 1.5rem;
    }
    
    .social-link {
      color: white;
      transition: color 0.3s ease;
    }
    
    .social-link:hover {
      color: var(--primary);
    }
    
    .copyright {
      margin-top: 2rem;
      text-align: center;
      color: #9ca3af;
      font-size: 0.875rem;
    }
    
    /* Responsive styles */
    @media (max-width: 992px) {
      .about-container, 
      .contact-container {
        grid-template-columns: 1fr;
      }
      
      .about-img {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
      }
    }

    
    @media (max-width: 768px) {
      .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      }
      .hero {
        padding: 5rem 0 2rem;
      }
      .hero h1 {
        font-size: clamp(1.5rem, 8vw, 2.5rem);
      }
      .container {
        padding: 0 10px;
      }
      .hero-content {
        max-width: 500px;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease, display 0.3s;
        z-index: 200;
      }
      .nav-links.active {
        display: flex;
        transform: translateY(0);
      }
      .nav-links li {
        margin: 1rem 0;
      }
    }
    
    @media (max-width: 480px) {
      .cta-buttons {
        flex-direction: column;
      }
      
      .skills-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      
      .section-title {
        font-size: 2rem;
      }
      .hero {
        padding: 2rem 0 1rem;
      }
      .container {
        padding: 0 5px;
      }
      .projects-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 400px) {
      .hero h1 {
        font-size: 1.25rem;
      }
      .section-title {
        font-size: 1.25rem;
      }
      .container {
        padding: 0 2px;
      }
      .hero {
        padding: 1rem 0 0.5rem;
      }
    }

    /* Animation */
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }
    
    .fade-in {
      animation: fadeIn 0.8s ease forwards;
    }
    
    .delay-1 { animation-delay: 0.2s; }
    .delay-2 { animation-delay: 0.4s; }
    .delay-3 { animation-delay: 0.6s; }

    @media (max-width: 600px) {
      footer {
        padding: 1.5rem 0;
      }
      .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }
      .footer-logo {
        margin-bottom: 1rem;
      }
      .social-links {
        justify-content: center;
      }
    }