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

  body {
      font-family: 'Inter', sans-serif;
      background: linear-gradient(135deg, #FAFBFC 0%, #F0F4F8 100%);
      color: #2D3748;
      line-height: 1.6;
  }

  /* Navigation Styles */
  .main-navigation {
      position: fixed;
      top: 0;
      width: 100%;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      z-index: 50;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
      border-bottom: 1px solid #E2E8F0;
      transition: all 0.3s ease;
  }

  .nav-container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 1rem;
  }

  .nav-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 4rem;
  }

  .nav-brand {
      display: flex;
      align-items: center;
  }

  .brand-title {
      font-size: 1.5rem;
      font-weight: 700;
      background: linear-gradient(135deg, #4299E1 0%, #9F7AEA 100%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
  }

  .brand-subtitle {
      margin-left: 0.5rem;
      font-size: 0.875rem;
      color: #718096;
      font-weight: 500;
  }

  .nav-menu {
      display: flex;
      gap: 2rem;
  }

  .nav-link {
      background: none;
      border: none;
      color: #718096;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.3s ease;
      padding-bottom: 0.25rem;
      border-bottom: 2px solid transparent;
  }

  .nav-link:hover,
  .nav-link.active {
      color: #4299E1;
      border-bottom-color: #4299E1;
  }

  .mobile-menu-button {
      display: none;
      flex-direction: column;
      gap: 0.25rem;
      padding: 0.5rem;
      border-radius: 0.375rem;
      background: none;
      border: none;
      cursor: pointer;
      transition: background-color 0.2s ease;
  }

  .mobile-menu-button:hover {
      background-color: #F7FAFC;
  }

  .menu-line {
      width: 1.5rem;
      height: 2px;
      background-color: #718096;
      transition: all 0.3s ease;
  }

  .mobile-menu {
      display: none;
      background: white;
      border-top: 1px solid #E2E8F0;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

  .mobile-menu-content {
      padding: 1rem;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
  }

  .mobile-nav-link {
      text-align: left;
      color: #718096;
      background: none;
      border: none;
      padding: 0.75rem 1rem;
      border-radius: 0.5rem;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s ease;
  }

  .mobile-nav-link:hover {
      color: #4299E1;
      background-color: #EBF8FF;
  }

  /* Hero Section */
  .hero-section {
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding-top: 4rem;
      padding-left: 1rem;
      padding-right: 1rem;
      position: relative;
      overflow: hidden;
  }

  .hero-background {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, #EBF8FF 0%, #F0F9FF 50%, #FAF5FF 100%);
      opacity: 0.6;
  }

  .hero-decoration-1 {
      position: absolute;
      top: 5rem;
      left: 2.5rem;
      width: 18rem;
      height: 18rem;
      background: linear-gradient(135deg, #4299E1 0%, #9F7AEA 100%);
      border-radius: 50%;
      mix-blend-mode: multiply;
      filter: blur(40px);
      opacity: 0.2;
      animation: pulse 4s ease-in-out infinite;
  }

  .hero-decoration-2 {
      position: absolute;
      bottom: 5rem;
      right: 2.5rem;
      width: 18rem;
      height: 18rem;
      background: linear-gradient(135deg, #48BB78 0%, #38B2AC 100%);
      border-radius: 50%;
      mix-blend-mode: multiply;
      filter: blur(40px);
      opacity: 0.2;
      animation: pulse 4s ease-in-out infinite 2s;
  }

  .hero-content {
      max-width: 1280px;
      margin: 0 auto;
      text-align: center;
      position: relative;
      z-index: 10;
  }

  .hero-avatar-container {
      margin-bottom: 2rem;
      opacity: 0;
      transform: translateY(50px) scale(0.9);
      animation: fadeInUp 1s ease-out 0.1s forwards;
  }

  .hero-avatar {
      width: 10rem;
      height: 10rem;
      border-radius: 50%;
      margin: 0 auto 1.5rem;
      border: 4px solid white;
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
      object-fit: cover;
      ring: 4px solid rgba(66, 153, 225, 0.3);
  }

  .hero-title {
      font-size: 3.75rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
      background: linear-gradient(135deg, #4299E1 0%, #9F7AEA 50%, #48BB78 100%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeInUp 1s ease-out 0.2s forwards;
  }

  .hero-description {
      font-size: 1.25rem;
      color: #718096;
      margin-bottom: 2rem;
      max-width: 64rem;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.6;
      font-weight: 500;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeInUp 1s ease-out 0.4s forwards;
  }

  .hero-buttons {
      display: flex;
      gap: 1.5rem;
      justify-content: center;
      margin-bottom: 3rem;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeInUp 1s ease-out 0.6s forwards;
  }

  .primary-button {
      background: linear-gradient(135deg, #4299E1 0%, #3182CE 100%);
      color: white;
      padding: 1rem 2rem;
      border-radius: 0.75rem;
      font-weight: 600;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
  }

  .primary-button:hover {
      background: linear-gradient(135deg, #3182CE 0%, #2C5282 100%);
      box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
      transform: scale(1.05) rotate(1deg);
  }

  .secondary-button {
      border: 2px solid #4299E1;
      color: #4299E1;
      background: white;
      padding: 1rem 2rem;
      border-radius: 0.75rem;
      font-weight: 600;
      cursor: pointer;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
  }

  .secondary-button:hover {
      background: #4299E1;
      color: white;
      box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
      transform: scale(1.05) rotate(-1deg);
  }

  .social-links {
      display: flex;
      gap: 2rem;
      justify-content: center;
      opacity: 0;
      transform: translateY(30px);
      animation: fadeInUp 1s ease-out 0.8s forwards;
  }

  .social-link {
      color: #718096;
      padding: 0.5rem;
      border-radius: 50%;
      transition: all 0.3s ease;
      text-decoration: none;
  }

  .social-link:hover {
      color: #4299E1;
      background-color: #EBF8FF;
      transform: scale(1.25) rotate(12deg);
  }

  .scroll-indicator {
      position: absolute;
      bottom: 2rem;
      left: 50%;
      transform: translateX(-50%);
      animation: bounce 2s infinite;
  }

  /* About Section */
  .about-section {
      padding: 6rem 1rem;
      background: white;
      position: relative;
      overflow: hidden;
  }

  .about-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg, #F7FAFC 0%, #EDF2F7 100%);
      opacity: 0.5;
  }

  .section-container {
      max-width: 1280px;
      margin: 0 auto;
      position: relative;
      z-index: 10;
  }

  .section-header {
      text-align: center;
      margin-bottom: 5rem;
      opacity: 0;
      transform: translateY(50px);
      transition: all 1s ease;
  }

  .section-header.visible {
      opacity: 1;
      transform: translateY(0);
  }

  .section-title {
      font-size: 3rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
      color: #2D3748;
  }


  .section-divider {
      width: 6rem;
      height: 4px;
      background: linear-gradient(135deg, #4299E1 0%, #9F7AEA 100%);
      margin: 0 auto 1.5rem;
  }

  .section-subtitle {
      font-size: 1.25rem;
      color: #718096;
      max-width: 48rem;
      margin: 0 auto;
  }

  .about-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
  }

  .about-text {
      opacity: 0;
      transform: translateX(-50px);
      transition: all 1s ease 0.2s;
  }

  .about-text.visible {
      opacity: 1;
      transform: translateX(0);
  }

  .about-heading {
      font-size: 1.875rem;
      font-weight: 700;
      margin-bottom: 2rem;
      color: #4299E1;
  }

  .about-paragraph {
      color: #718096;
      margin-bottom: 1.5rem;
      line-height: 1.6;
      font-size: 1.125rem;
  }

  .stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
      margin-top: 2rem;
  }

  .stat-card {
      text-align: center;
      padding: 1.5rem;
      border-radius: 1rem;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
  }

  .stat-card:hover {
      box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
      transform: scale(1.05);
  }

  .stat-card:nth-child(1) {
      background: linear-gradient(135deg, #EBF8FF 0%, #F0F9FF 100%);
  }

  .stat-card:nth-child(2) {
      background: linear-gradient(135deg, #F0FFF4 0%, #F0FDF4 100%);
  }

  .stat-card:nth-child(3) {
      background: linear-gradient(135deg, #FFFAF0 0%, #FEF7ED 100%);
  }

  .stat-card:nth-child(4) {
      background: linear-gradient(135deg, #FAF5FF 0%, #F7FAFC 100%);
  }

  .stat-number {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
  }

  .stat-card:nth-child(1) .stat-number {
      color: #4299E1;
  }

  .stat-card:nth-child(2) .stat-number {
      color: #48BB78;
  }

  .stat-card:nth-child(3) .stat-number {
      color: #ED8936;
  }

  .stat-card:nth-child(4) .stat-number {
      color: #9F7AEA;
  }

  .stat-label {
      color: #718096;
      font-weight: 600;
  }

  .about-image-container {
      display: flex;
      justify-content: center;
      opacity: 0;
      transform: translateX(50px);
      transition: all 1s ease 0.4s;
  }

  .about-image-container.visible {
      opacity: 1;
      transform: translateX(0);
  }

  .about-image {
      border-radius: 1rem;
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
      object-fit: cover;
      transition: all 0.5s ease;
  }

  .about-image:hover {
      transform: scale(1.05) rotate(1deg);
  }

  /* Projects Section */
  .projects-section .experience-section .certificate-section {
      padding: 6rem 1rem;
      background: linear-gradient(135deg, #F7FAFC 0%, #EDF2F7 100%);
      position: relative;
      overflow: hidden;
  }

  .projects-background {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, #4299E1 0%, #9F7AEA 100%);
      opacity: 0.05;
  }

  .projects-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
      margin-bottom: 3rem;
  }

  .project-card {
      background: white;
      border-radius: 1rem;
      overflow: hidden;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
      opacity: 0;
      transform: translateY(50px);
  }

  .project-card.visible {
      opacity: 1;
      transform: translateY(0);
  }

  .project-card:hover {
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
      transform: translateY(-10px);
  }

  .project-image {
      width: 100%;
      height: 12rem;
      object-fit: cover;
  }

  .project-content {
      padding: 1.5rem;
  }

  .project-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: #2D3748;
  }

  .project-description {
      color: #718096;
      margin-bottom: 1rem;
      line-height: 1.6;
  }

  .project-tech {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-bottom: 1rem;
  }

  .tech-tag {
      background: #EBF8FF;
      color: #4299E1;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.875rem;
      font-weight: 500;
  }

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

  .project-link {
      color: #4299E1;
      text-decoration: none;
      font-weight: 500;
      transition: color 0.3s ease;
  }

  .project-link:hover {
      color: #3182CE;
  }

  /* Skills Section */
  .skills-section {
      padding: 6rem 1rem;
      background: white;
  }

  .skills-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
      margin-top: 3rem;
  }

  .skill-item {
      opacity: 0;
      transform: translateY(30px);
      transition: all 0.8s ease;
  }

  .skill-item.visible {
      opacity: 1;
      transform: translateY(0);
  }

  .skill-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.5rem;
  }

  .skill-name {
      font-weight: 600;
      color: #2D3748;
      display: flex;
      align-items: center;
      gap: 0.5rem;
  }

  .skill-percentage {
      font-weight: 600;
      color: #4299E1;
  }

  .skill-bar {
      width: 100%;
      height: 8px;
      background: #E2E8F0;
      border-radius: 4px;
      overflow: hidden;
  }

  .skill-progress {
      height: 100%;
      background: linear-gradient(135deg, #4299E1 0%, #9F7AEA 100%);
      border-radius: 4px;
      width: 0;
      transition: width 2s ease-in-out;
  }

  .experience-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
  }

  .experience-item {
      background: #fff;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  .experience-item h3 {
      color: #2c3e50;
  }

  .experience-duration {
      font-size: 0.9rem;
      color: #999;
      margin-bottom: 10px;
  }

  /* === Certificates Section === */
  .certificate-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
  }

  .certificate-item {
      background: #fff;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  .certificate-item h3 {
      color: #2c3e50;
  }

  .certificate-date {
      font-size: 0.9rem;
      color: #999;
      margin-bottom: 10px;
  }


  /* Contact Section */
  .contact-section {
      padding: 6rem 1rem;
      background: white;
  }

  .contact-content {
      max-width: 2xl;
      margin: 0 auto;
  }

  .contact-form {
      background: linear-gradient(135deg, #F7FAFC 0%, #EDF2F7 100%);
      padding: 3rem;
      border-radius: 1rem;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  }

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

  .form-label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 600;
      color: #2D3748;
  }

  .form-input,
  .form-textarea {
      width: 100%;
      padding: 0.75rem;
      border: 2px solid #E2E8F0;
      border-radius: 0.5rem;
      font-size: 1rem;
      transition: border-color 0.3s ease;
  }

  .form-input:focus,
  .form-textarea:focus {
      outline: none;
      border-color: #4299E1;
  }

  .form-textarea {
      resize: vertical;
      min-height: 8rem;
  }

  .submit-button {
      background: linear-gradient(135deg, #4299E1 0%, #3182CE 100%);
      color: white;
      padding: 0.75rem 2rem;
      border: none;
      border-radius: 0.5rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      width: 100%;
  }

  .submit-button:hover {
      background: linear-gradient(135deg, #3182CE 0%, #2C5282 100%);
      transform: translateY(-2px);
  }

  .success-message {
      background: #F0FFF4;
      color: #48BB78;
      padding: 1rem;
      border-radius: 0.5rem;
      margin-top: 1rem;
      text-align: center;
      font-weight: 600;
  }

  /* Animations */
  @keyframes fadeInUp {
      from {
          opacity: 0;
          transform: translateY(30px);
      }

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

  @keyframes pulse {

      0%,
      100% {
          transform: scale(1);
      }

      50% {
          transform: scale(1.05);
      }
  }

  @keyframes bounce {

      0%,
      20%,
      53%,
      80%,
      100% {
          transform: translateY(0);
      }

      40%,
      43% {
          transform: translateY(-30px);
      }

      70% {
          transform: translateY(-15px);
      }

      90% {
          transform: translateY(-4px);
      }
  }

  /* Responsive Design */
  @media (max-width: 1024px) {
      .nav-menu {
          display: none;
      }

      .mobile-menu-button {
          display: flex;
      }

      .about-content {
          grid-template-columns: 1fr;
          gap: 3rem;
      }

      .projects-grid {
          grid-template-columns: 1fr;
      }
  }

  @media (max-width: 640px) {
      .nav-container {
          padding: 0 1.5rem;
      }

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

      .hero-description {
          font-size: 1.125rem;
      }

      .hero-buttons {
          flex-direction: column;
          align-items: center;
      }

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

      .stats-grid {
          grid-template-columns: 1fr;
      }

      .skills-grid {
          grid-template-columns: 1fr;
      }

      .testimonial-author {
          flex-direction: column;
          text-align: center;
      }

      .contact-form {
          padding: 2rem;
      }
  }

  /* Utility Classes */
  .hidden {
      display: none;
  }

  .visible {
      opacity: 1 !important;
      transform: translateY(0) !important;
  }

  .slider {
      position: relative;
      width: 100%;
      padding-top: 75%;
      /* 4:3 Aspect Ratio (height / width = 0.75) */
      overflow: hidden;
  }

  .slider img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0;
      transition: opacity 1s ease-in-out;
      border-radius: 12px;
  }

  .slider img.active {
      opacity: 1;
      position: absolute;
  }