:root {
      --primary-color: #6366f1;
      --secondary-color: #4f46e5;
      --text-color: #333;
      --bg-color: #fff;
      --card-bg: #f9fafb;
      --border-color: #e5e7eb;
      --header-bg: rgba(255, 255, 255, 0.9);
      --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      --transition: all 0.3s ease;
    }

    .dark-mode {
      --primary-color: #818cf8;
      --secondary-color: #6366f1;
      --text-color: #e5e7eb;
      --bg-color: #1f2937;
      --card-bg: #374151;
      --border-color: #4b5563;
      --header-bg: rgba(31, 41, 55, 0.9);
      --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Poppins', sans-serif;
      color: var(--text-color);
      background-color: var(--bg-color);
      transition: var(--transition);
      overflow-x: hidden;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background-color: var(--header-bg);
      backdrop-filter: blur(8px);
      box-shadow: var(--shadow);
      z-index: 1000;
      padding: 1rem 0;
      transition: var(--transition);
    }

    .header-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logo {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary-color);
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .logo span {
      color: var(--text-color);
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
    }

    .nav-links a {
      text-decoration: none;
      color: var(--text-color);
      font-weight: 500;
      transition: var(--transition);
      position: relative;
    }

    .nav-links a:hover {
      color: var(--primary-color);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: -5px;
      left: 0;
      background-color: var(--primary-color);
      transition: var(--transition);
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .theme-toggle {
      background: none;
      border: none;
      cursor: pointer;
      font-size: 1.2rem;
      color: var(--text-color);
      transition: var(--transition);
    }

    .theme-toggle:hover {
      color: var(--primary-color);
      transform: rotate(20deg);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-color);
      cursor: pointer;
    }

    section {
      min-height: 100vh;
      padding: 6rem 0;
      display: flex;
      align-items: center;
      scroll-margin-top: 4rem;
    }

    h1, h2, h3, h4 {
      line-height: 1.2;
      font-weight: 700;
    }

    .btn {
      display: inline-block;
      padding: 0.8rem 2rem;
      background-color: var(--primary-color);
      color: white;
      border-radius: 5px;
      text-decoration: none;
      font-weight: 500;
      transition: var(--transition);
      border: none;
      cursor: pointer;
    }

    .btn:hover {
      background-color: var(--secondary-color);
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    /* Home Section */
    #home {
      position: relative;
      background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.5)), url('images/profile.jpg');
      background-size: cover;
      background-position: center;
      color: white;
      text-align: center;
      padding: 0;
    }

    .home-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(rgba(99, 102, 241, 0.2), transparent);
    }

    .home-content {
      position: relative;
      z-index: 2;
      max-width: 800px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    .home-title {
      font-size: 3.5rem;
      margin-bottom: 1rem;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeUp 1s forwards 0.3s;
    }

    .home-subtitle {
      font-size: 1.5rem;
      margin-bottom: 2rem;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeUp 1s forwards 0.6s;
    }

    .social-icons {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      margin-bottom: 2.5rem;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeUp 1s forwards 0.9s;
    }

    .social-icons a {
      color: white;
      font-size: 1.5rem;
      transition: var(--transition);
    }

    .social-icons a:hover {
      color: var(--primary-color);
      transform: translateY(-5px);
    }

    .cta-btn {
      opacity: 0;
      transform: translateY(30px);
      animation: fadeUp 1s forwards 1.2s;
    }

    @keyframes fadeUp {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    /* About Section */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .about-img-container {
      position: relative;
      border-radius: 1rem;
      overflow: hidden;
    }

    .about-img {
      width: 100%;
      height: auto;
      border-radius: 1rem;
      transition: var(--transition);
    }

    .about-img-container::before {
      content: '';
      position: absolute;
      top: 20px;
      left: 20px;
      width: 100%;
      height: 100%;
      border: 3px solid var(--primary-color);
      border-radius: 1rem;
      z-index: -1;
      transition: var(--transition);
    }

    .about-img-container:hover::before {
      top: 10px;
      left: 10px;
    }

    .about-content h2 {
      font-size: 2.5rem;
      margin-bottom: 1.5rem;
      color: var(--primary-color);
    }

    .about-text {
      margin-bottom: 2rem;
      line-height: 1.7;
    }

    .timeline {
      position: relative;
      margin-top: 4rem;
    }

    .timeline::before {
      content: '';
      position: absolute;
      width: 100%;
      height: 2px;
      background-color: var(--border-color);
      top: 20px;
    }

    .timeline-items {
      display: flex;
      justify-content: space-between;
      position: relative;
    }

    .timeline-item {
      text-align: center;
      flex: 1;
      position: relative;
    }

    .timeline-dot {
      width: 15px;
      height: 15px;
      background-color: var(--primary-color);
      border-radius: 50%;
      margin: 0 auto 15px;
      position: relative;
      z-index: 2;
    }

    .timeline-date {
      font-weight: 600;
      margin-bottom: 0.5rem;
      color: var(--primary-color);
    }

    .timeline-title {
      font-size: 0.9rem;
      margin-bottom: 0.25rem;
    }

    .timeline-org {
      font-size: 0.8rem;
      color: #777;
    }

    /* Skills Section */
    .section-title {
      font-size: 2.5rem;
      text-align: center;
      margin-bottom: 3rem;
      color: var(--primary-color);
      position: relative;
    }

    .section-title::after {
      content: '';
      position: absolute;
      width: 70px;
      height: 3px;
      background-color: var(--primary-color);
      bottom: -10px;
      left: 50%;
      transform: translateX(-50%);
    }

    .skills-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: 2rem;
    }

    .skill-card {
      background-color: var(--card-bg);
      border-radius: 10px;
      padding: 2rem;
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

    .skill-card:hover {
      transform: translateY(-10px);
    }

    .skill-icon {
      font-size: 2.5rem;
      color: var(--primary-color);
      margin-bottom: 1rem;
    }

    .skill-name {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 1rem;
    }

    .progress-container {
      height: 8px;
      background-color: var(--border-color);
      border-radius: 4px;
      overflow: hidden;
    }

    .progress-bar {
      height: 100%;
      background-color: var(--primary-color);
      border-radius: 4px;
      width: 0;
      transition: width 1.5s ease-in-out;
    }

    /* Projects Section */
    .projects-filter {
      display: flex;
      justify-content: center;
      gap: 1rem;
      margin-bottom: 2.5rem;
      flex-wrap: wrap;
    }

    .filter-btn {
      padding: 0.5rem 1.5rem;
      background-color: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 5px;
      cursor: pointer;
      transition: var(--transition);
      font-weight: 500;
    }

    .filter-btn.active, .filter-btn:hover {
      background-color: var(--primary-color);
      color: white;
    }

    .projects-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 2rem;
    }

    .project-card {
      position: relative;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: var(--shadow);
      height: 250px;
    }

    .project-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .project-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.7);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 1.5rem;
      opacity: 0;
      transition: var(--transition);
    }

    .project-card:hover .project-overlay {
      opacity: 1;
    }

    .project-card:hover .project-img {
      transform: scale(1.1);
    }

    .project-title {
      color: white;
      font-size: 1.3rem;
      margin-bottom: 0.5rem;
      text-align: center;
    }

    .project-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 0.5rem;
      margin-bottom: 1.5rem;
    }

    .project-tag {
      padding: 0.3rem 0.7rem;
      background-color: var(--primary-color);
      border-radius: 20px;
      font-size: 0.8rem;
      color: white;
    }

    .project-btn {
      padding: 0.6rem 1.5rem;
      background-color: transparent;
      color: white;
      border: 2px solid white;
      border-radius: 5px;
      cursor: pointer;
      transition: var(--transition);
      font-weight: 500;
    }

    .project-btn:hover {
      background-color: white;
      color: var(--primary-color);
    }

    /* Project Modal */
    .modal {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.8);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 2000;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }

    .modal.active {
      opacity: 1;
      visibility: visible;
    }

    .modal-content {
      background-color: var(--bg-color);
      border-radius: 10px;
      width: 90%;
      max-width: 800px;
      max-height: 90vh;
      overflow-y: auto;
      padding: 2rem;
      position: relative;
    }

    .modal-close {
      position: absolute;
      top: 1rem;
      right: 1rem;
      font-size: 1.5rem;
      background: none;
      border: none;
      color: var(--text-color);
      cursor: pointer;
      transition: var(--transition);
    }

    .modal-close:hover {
      color: var(--primary-color);
      transform: rotate(90deg);
    }

    .modal-img {
      width: 100%;
      border-radius: 5px;
      margin-bottom: 1.5rem;
    }

    .modal-title {
      font-size: 1.8rem;
      margin-bottom: 1rem;
    }

    .modal-description {
      margin-bottom: 1.5rem;
      line-height: 1.7;
    }

    .modal-tech {
      margin-bottom: 1.5rem;
    }

    .modal-tech-title {
      font-weight: 600;
      margin-bottom: 0.5rem;
    }

    .modal-tech-list {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .modal-tech-item {
      padding: 0.3rem 0.7rem;
      background-color: var(--card-bg);
      border-radius: 20px;
      font-size: 0.9rem;
    }

    .modal-links {
      display: flex;
      gap: 1rem;
    }

    .modal-link {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.6rem 1.2rem;
      background-color: var(--primary-color);
      color: white;
      border-radius: 5px;
      text-decoration: none;
      transition: var(--transition);
    }

    .modal-link:hover {
      background-color: var(--secondary-color);
    }

    .modal-nav {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      font-size: 2rem;
      color: white;
      background: none;
      border: none;
      cursor: pointer;
      transition: var(--transition);
    }

    .modal-nav:hover {
      color: var(--primary-color);
    }

    .modal-prev {
      left: 1rem;
    }

    .modal-next {
      right: 1rem;
    }

    /* Blog Section */
    .blog-filter {
      margin-bottom: 2rem;
    }

    .blog-search {
      width: 100%;
      max-width: 500px;
      margin: 0 auto;
      position: relative;
      display: flex;
    }

    .blog-search input {
      width: 100%;
      padding: 0.8rem 1rem 0.8rem 2.5rem;
      border: 1px solid var(--border-color);
      border-radius: 5px;
      background-color: var(--card-bg);
      font-family: inherit;
      transition: var(--transition);
    }

    .blog-search i {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      color: #777;
    }

    .blog-search input:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    }

    .blog-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
      gap: 2rem;
    }

    .blog-card {
      background-color: var(--card-bg);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

    .blog-card:hover {
      transform: translateY(-10px);
    }

    .blog-img-container {
      height: 200px;
      overflow: hidden;
    }

    .blog-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .blog-card:hover .blog-img {
      transform: scale(1.1);
    }

    .blog-content {
      padding: 1.5rem;
    }

    .blog-date {
      font-size: 0.8rem;
      color: #777;
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .blog-title {
      font-size: 1.3rem;
      margin-bottom: 1rem;
      color: var(--text-color);
      transition: var(--transition);
    }

    .blog-title:hover {
      color: var(--primary-color);
    }

    .blog-excerpt {
      margin-bottom: 1.5rem;
      line-height: 1.6;
      color: var(--text-color);
      opacity: 0.8;
    }

    .blog-link {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--primary-color);
      font-weight: 500;
      transition: var(--transition);
    }

    .blog-link:hover {
      gap: 0.8rem;
    }

    /* Contact Section */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
    }

    .contact-info {
      display: flex;
      flex-direction: column;
      gap: 2rem;
    }

    .contact-title {
      font-size: 2rem;
      margin-bottom: 1rem;
      color: var(--primary-color);
    }

    .contact-text {
      margin-bottom: 2rem;
      line-height: 1.7;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 1rem;
    }

    .contact-icon {
      width: 50px;
      height: 50px;
      background-color: var(--primary-color);
      color: white;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 1.2rem;
      flex-shrink: 0;
    }

    .contact-label {
      font-weight: 600;
      margin-bottom: 0.2rem;
    }

    .contact-value {
      color: var(--text-color);
      opacity: 0.8;
    }

    .contact-social {
      display: flex;
      gap: 1rem;
      margin-top: 2rem;
    }

    .contact-social a {
      width: 40px;
      height: 40px;
      background-color: var(--card-bg);
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      color: var(--text-color);
      font-size: 1.2rem;
      transition: var(--transition);
    }

    .contact-social a:hover {
      background-color: var(--primary-color);
      color: white;
      transform: translateY(-5px);
    }

    .contact-form {
      background-color: var(--card-bg);
      padding: 2rem;
      border-radius: 10px;
      box-shadow: var(--shadow);
    }

    .form-group {
      margin-bottom: 1.5rem;
    }

    .form-label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 500;
    }

    .form-control {
      width: 100%;
      padding: 0.8rem 1rem;
      border: 1px solid var(--border-color);
      border-radius: 5px;
      background-color: var(--bg-color);
      font-family: inherit;
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    }

    textarea.form-control {
      min-height: 150px;
      resize: vertical;
    }

    .form-error {
      color: #e11d48;
      font-size: 0.8rem;
      margin-top: 0.25rem;
      display: none;
    }

    .form-control.error {
      border-color: #e11d48;
    }

    .form-control.error + .form-error {
      display: block;
    }

    /* Map */
    .map {
      height: 300px;
      border-radius: 10px;
      overflow: hidden;
      margin-top: 3rem;
    }

    /* Footer */
    footer {
      background-color: var(--card-bg);
      padding: 2rem 0;
      text-align: center;
    }

    .footer-logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary-color);
      margin-bottom: 1rem;
      display: inline-block;
    }

    .footer-text {
      margin-bottom: 1.5rem;
      max-width: 500px;
      margin-left: auto;
      margin-right: auto;
    }

    .footer-links {
      display: flex;
      justify-content: center;
      gap: 2rem;
      margin-bottom: 1.5rem;
      flex-wrap: wrap;
    }

    .footer-link {
      color: var(--text-color);
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-link:hover {
      color: var(--primary-color);
    }

    .footer-social {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      margin-bottom: 1.5rem;
    }

    .footer-social a {
      color: var(--text-color);
      font-size: 1.2rem;
      transition: var(--transition);
    }

    .footer-social a:hover {
      color: var(--primary-color);
      transform: translateY(-5px);
    }

    .copyright {
      font-size: 0.9rem;
      color: var(--text-color);
      opacity: 0.7;
    }

    /* Responsive Styles */
    @media (max-width: 992px) {
      .about-grid,
      .contact-grid {
        grid-template-columns: 1fr;
      }

      .about-img-container {
        margin-bottom: 2rem;
      }

      .about-img-container::before {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        flex-direction: column;
        gap: 0;
        background-color: var(--header-bg);
        box-shadow: var(--shadow);
        padding: 1rem 0;
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
      }

      .nav-links.active {
        transform: translateY(0);
      }

      .nav-links li {
        width: 100%;
        text-align: center;
      }

      .nav-links a {
        display: block;
        padding: 1rem 0;
      }

      .nav-links a::after {
        display: none;
      }

      .mobile-menu-btn {
        display: block;
      }

      .home-title {
        font-size: 2.5rem;
      }

      .timeline-items {
        flex-direction: column;
        gap: 2rem;
      }

      .timeline::before {
        height: 100%;
        width: 2px;
        top: 0;
        left: 20px;
      }

      .timeline-item {
        text-align: left;
        padding-left: 50px;
      }

      .timeline-dot {
        position: absolute;
        left: 15px;
        top: 0;
        margin: 0;
      }

      .projects-grid,
      .skills-grid,
      .blog-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      }

      .section-title {
        font-size: 2rem;
      }

      .modal-nav {
        font-size: 1.5rem;
      }

      .modal-prev {
        left: 0.5rem;
      }

      .modal-next {
        right: 0.5rem;
      }
    }

    @media (max-width: 576px) {
      .home-title {
        font-size: 2rem;
      }

      .home-subtitle {
        font-size: 1.2rem;
      }

      .section-title {
        font-size: 1.8rem;
      }

      .modal-content {
        padding: 1.5rem;
      }

      .footer-links {
        gap: 1rem;
      }
    }

    /* Animations */
    .fade-up {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .fade-up.active {
      opacity: 1;
      transform: translateY(0);
    }

    /* Custom scroll bar */
    ::-webkit-scrollbar {
      width: 10px;
    }

    ::-webkit-scrollbar-track {
      background-color: var(--card-bg);
    }

    ::-webkit-scrollbar-thumb {
      background-color: var(--primary-color);
      border-radius: 5px;
    }

    ::-webkit-scrollbar-thumb:hover {
      background-color: var(--secondary-color);
    }