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

    body {
      background-color: #00192B;
      font-family: "Jura", sans-serif;
      scroll-behavior: smooth;
      margin: 0;
      padding: 0;
      font-size: clamp(14px, 2vw, 18px);
      transition: background-color 0.3s ease;
    }

    /* NAVIGATION */
    #mynav {
      background-color: white;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      padding: 10px 0;
      z-index: 100;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
      transition: background-color 0.3s ease;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0 20px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .brand {
      font-size: clamp(18px, 3vw, 24px);
      font-weight: bold;
      color: #00192B;
      transition: color 0.3s ease;
    }

    .nav-links {
      display: flex;
      gap: 20px;
      list-style: none;
      align-items: center;
      transition: right 0.3s ease-in-out;
    }

    .nav-links li a,
    .nav-links li button {
      text-decoration: none;
      color: #00192B;
      font-weight: 500;
      font-size: clamp(14px, 2vw, 16px);
      background: none;
      border: none;
      cursor: pointer;
      font-family: "Jura", sans-serif;
      padding: 8px 12px;
      transition: color 0.3s ease;
      position: relative;
    }

    .nav-links li a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      width: 0;
      height: 2px;
      background-color: #0077cc;
      transition: width 0.3s ease, left 0.3s ease;
    }

    .nav-links li a:hover::after,
    .nav-links li a.active::after {
      width: 80%;
      left: 10%;
    }

    .hamburger {
      font-size: 28px;
      background: none;
      border: none;
      display: none;
      cursor: pointer;
      color: #00192B;
      position: relative;
      z-index: 101;
    }

    @media (max-width: 768px) {
      .hamburger {
        display: block;
      }

      .nav-links {
        position: fixed;
        top: 60px;
        right: -250px;
        flex-direction: column;
        width: 200px;
        height: 100vh;
        padding: 20px;
        background-color: white;
        box-shadow: -2px 0 5px rgba(0,0,0,0.2);
        z-index: 99;
      }

      .nav-links.open {
        right: 0;
      }

      body.menu-open {
        overflow: hidden;
      }
    }

    .nav-links li a:hover,
    .nav-links li button:hover {
      color: #0077cc;
    }

    main {
      padding-top: 70px;
      max-width: 1200px;
      margin: 0 auto;
    }

    section {
      min-height: 80vh;
      padding: 40px 20px;
    }

    .box {
      background-color: #D9D9D9;
      margin: 20px 0;
      padding: 40px;
      border-radius: 15px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    }

    .boxdiv {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 50px;
      flex-wrap: wrap;
      padding: 20px;
    }

    .profile img {
      width: 200px;
      height: 200px;
      border-radius: 50%;
      object-fit: cover;
      border: 4px solid #0077cc;
      box-shadow: 0 8px 20px rgba(0,119,204,0.3);
      transition: transform 0.4s ease, box-shadow 0.4s ease;
    }

    .profile img:hover {
      transform: scale(1.05);
      box-shadow: 0 12px 30px rgba(0,119,204,0.5);
    }

    .stack ul {
      list-style-type: none;
      padding-left: 0;
      margin: 0;
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
      font-size: clamp(14px, 2.5vw, 16px);
    }

    .stack ul li {
      background-color: #f8f8f8;
      padding: 12px 18px;
      border-radius: 10px;
      border-left: 4px solid #0077cc;
      transition: all 0.3s ease;
    }

    .stack ul li:hover {
      background-color: #e8e8e8;
      transform: translateX(5px);
      border-left-color: #005fa3;
    }

    .intro {
      margin: 20px 0;
      font-size: clamp(16px, 2.5vw, 20px);
      line-height: 1.8;
      text-align: center;
    }

    h1 {
      font-size: clamp(28px, 5vw, 42px);
      padding: 10px 0 20px 0;
      color: #00192B;
    }

    h2 {
      font-size: clamp(24px, 4vw, 36px);
      margin-bottom: 30px;
      color: #00192B;
    }

    h3 {
      font-size: clamp(18px, 3vw, 24px);
      margin-bottom: 15px;
      color: #0077cc;
    }

    .button-group {
      text-align: center;
      margin-top: 30px;
      display: flex;
      gap: 15px;
      justify-content: center;
      flex-wrap: wrap;
    }

    #more, .contact {
      width: 140px;
      height: 50px;
      border-radius: 25px;
      border: 2px solid #0077cc;
      background-color: #0077cc;
      color: white;
      font-family: "Jura", sans-serif;
      font-size: 16px;
      font-weight: bold;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    #more:hover, .contact:hover {
      background-color: transparent;
      color: #0077cc;
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0,119,204,0.3);
    }

    /* Skills Section */
    .skills-container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 20px;
    }

    .skill-category {
      background-color: white;
      padding: 25px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      transition: transform 0.3s ease;
    }

    .skill-category:hover {
      transform: translateY(-5px);
    }

    .skill-category h3 {
      margin-bottom: 15px;
      padding-bottom: 10px;
      border-bottom: 2px solid #0077cc;
    }

    .skill-category ul {
      list-style-type: none;
      padding-left: 0;
    }

    .skill-category ul li {
      padding: 8px 0;
      padding-left: 20px;
      position: relative;
    }

    .skill-category ul li::before {
      content: '▹';
      position: absolute;
      left: 0;
      color: #0077cc;
      font-weight: bold;
    }

    /* Projects Grid */
    .projects-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 20px;
    }

    .project-card {
      background-color: white;
      border-radius: 15px;
      padding: 25px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.1);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .project-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, #0077cc, #00a8e8);
    }

    .project-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    }

    .project-card h3 {
      color: #00192B;
      margin-bottom: 10px;
    }

    .project-card p {
      line-height: 1.6;
      margin-bottom: 10px;
    }

    .project-card a {
      display: inline-block;
      margin-top: 15px;
      color: #0077cc;
      text-decoration: none;
      font-weight: bold;
      transition: color 0.3s ease;
    }

    .project-card a:hover {
      color: #005fa3;
    }

    .project-card.inProgress h3::after {
      content: '🛠️ In Progress';
      display: inline-block;
      margin-left: 10px;
      font-size: 11px;
      background-color: #ffc107;
      color: black;
      padding: 4px 10px;
      border-radius: 12px;
      font-weight: normal;
    }

    /* Achievements */
    .achievement {
      display: flex;
      align-items: flex-start;
      gap: 20px;
      background-color: white;
      border-radius: 15px;
      padding: 25px;
      margin-bottom: 25px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      transition: all 0.3s ease;
    }

    .achievement:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }

    .achievement-image {
      width: 120px;
      height: 120px;
      object-fit: contain;
      border-radius: 12px;
      background-color: #f8f8f8;
      padding: 10px;
      flex-shrink: 0;
    }

    .achievement-content {
      flex: 1;
    }

    .achievement-title {
      font-size: 1.3em;
      font-weight: bold;
      color: #0077cc;
      margin-bottom: 10px;
    }

    .achievement-desc {
      color: #333;
      line-height: 1.7;
      margin-bottom: 15px;
    }

    .achievement-gallery {
      margin-top: 15px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .gallery-img {
      width: 90px;
      height: 90px;
      object-fit: cover;
      border-radius: 10px;
      transition: transform 0.2s ease;
      cursor: zoom-in;
      border: 2px solid #e0e0e0;
    }

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

    /* Certificates */
    .certificates-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 20px;
    }

    .certificate-card {
      background-color: white;
      padding: 25px;
      border-radius: 15px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      transition: all 0.3s ease;
      min-height: 200px;
    }

    .certificate-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }

    .certificate-card h3 {
      margin-bottom: 20px;
      padding-bottom: 10px;
      border-bottom: 2px solid #0077cc;
    }

    .certificate-card p {
      margin-bottom: 12px;
      line-height: 1.6;
    }

    .certificate-card a {
      color: #0077cc;
      text-decoration: none;
      transition: color 0.3s ease;
      display: block;
    }

    .certificate-card a:hover {
      color: #005fa3;
      text-decoration: underline;
    }

    .certificate-card hr {
      border: none;
      border-top: 1px solid #e0e0e0;
      margin: 12px 0;
    }

    /* Contact Form */
    .contact-form {
      display: flex;
      flex-direction: column;
      gap: 20px;
      max-width: 600px;
      margin: 0 auto;
    }

    .contact-form label {
      font-weight: bold;
      color: #00192B;
    }

    .contact-form input,
    .contact-form textarea {
      padding: 12px 15px;
      font-family: "Jura", sans-serif;
      font-size: clamp(14px, 2.5vw, 16px);
      border-radius: 10px;
      border: 2px solid #ddd;
      resize: vertical;
      transition: border-color 0.3s ease;
    }

    .contact-form input:focus,
    .contact-form textarea:focus {
      outline: none;
      border-color: #0077cc;
    }

    .contact-form button {
      background-color: #0077cc;
      color: white;
      border: none;
      padding: 14px;
      border-radius: 25px;
      cursor: pointer;
      font-family: "Jura", sans-serif;
      font-size: 16px;
      font-weight: bold;
      transition: all 0.3s ease;
    }

    .contact-form button:hover {
      background-color: #005fa3;
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0,119,204,0.3);
    }

    /* Footer */
    footer {
      background-color: #001a2e;
      color: #fff;
      text-align: center;
      padding: 30px 20px;
      margin-top: 40px;
    }

    footer p {
      margin: 10px 0;
    }

    footer a {
      color: #66ccff;
      text-decoration: none;
      margin: 0 10px;
      transition: color 0.3s ease;
    }

    footer a:hover {
      color: #99ddff;
      text-decoration: underline;
    }

    /* Lightbox */
    #lightbox {
      display: none;
      position: fixed;
      z-index: 9999;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background-color: rgba(0, 0, 0, 0.9);
      justify-content: center;
      align-items: center;
      cursor: zoom-out;
    }

    #lightbox img {
      max-width: 90%;
      max-height: 90%;
      border-radius: 10px;
      box-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
      animation: fadeIn 0.3s ease;
      object-fit: contain;
    }

    .clickable {
      cursor: zoom-in;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: scale(0.95); }
      to { opacity: 1; transform: scale(1); }
    }

    .fade-in {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.8s ease, transform 0.8s ease;
    }

    .fade-in-text {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.8s ease, transform 0.8s ease;
    }

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

    /* Dark Mode */
    body.dark {
      background-color: #0a0a0a;
      color: #ffffff;
    }

    body.dark .box {
      background-color: #1a1a1a;
    }

    body.dark #mynav {
      background-color: #1a1a1a;
    }

    body.dark .brand {
      color: #ffffff;
    }

    body.dark .nav-links {
      background-color: #1a1a1a;
    }

    body.dark .nav-links li a,
    body.dark .nav-links li button {
      color: #ffffff;
    }

    body.dark .hamburger {
      color: #ffffff;
    }

    body.dark h1,
    body.dark h2 {
      color: #ffffff;
    }

    body.dark .skill-category,
    body.dark .project-card,
    body.dark .achievement,
    body.dark .certificate-card {
      background-color: #252525;
      color: #ffffff;
    }

    body.dark .project-card h3,
    body.dark .achievement-desc {
      color: #e0e0e0;
    }

    body.dark .stack ul li {
      background-color: #2a2a2a;
      color: #ffffff;
    }

    body.dark .contact-form label {
      color: #ffffff;
    }

    body.dark .contact-form input,
    body.dark .contact-form textarea {
      background-color: #252525;
      color: #ffffff;
      border-color: #444;
    }

    #theme-toggle {
      background: none;
      border: none;
      font-size: 20px;
      cursor: pointer;
      padding: 5px 10px;
    }

    @media (max-width: 768px) {
      .boxdiv {
        flex-direction: column;
        gap: 30px;
      }

      .achievement {
        flex-direction: column;
      }

      .achievement-image {
        width: 100%;
        max-width: 200px;
        margin: 0 auto;
      }
    }