@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      text-decoration: none;
      list-style: none;
      border: none;
      outline: none;
      font-family: "Poppins", sans-serif;
    }

    :root {
      --nav-bg-color: rgba(255, 255, 255, 0.1);
      --bg-color: #171f2b;
      --second-bg-color: #1f2733;
      --third-bg-color: #2d3542;
      --main-color: #0ef;
      --white-color: #fff;
      --tab-list-color: #7c8594;
    }

    ::selection {
      background: var(--main-color);
      color: var(--bg-color);
    }

    ::-webkit-scrollbar {
      width: .5rem;
    }

    ::-webkit-scrollbar-thumb {
      background: var(--main-color);
      border-radius: 1rem;
    }

    ::placeholder {
      color: var(--white-color);
    }

    html {
      font-size: 62.5%;
    }

    body {
      color: var(--white-color);
      overflow: hidden;
    }

    p {
      font-size: 1.6rem;
    }

    .nav {
      position: fixed;
      bottom: 2rem;
      left: 50%;
      transform: translateX(-50%);
      width: 40rem;
      padding: 2rem 0;
      background: var(--nav-bg-color);
      border-radius: 5rem;
      z-index: 100;
      animation: animate-nav 1s ease-in-out backwards;
      animation-delay: 4s;

    }

    @keyframes animate-nav {
      0% {
        visibility: hidden;
        opacity: 0;
      }

      100% {
        visibility: visible;
        opacity: 1;
      }
    }


    .nav .nav-list {
      display: flex;
      justify-content: space-evenly;
    }

    .nav-list li {
      position: relative;
      display: flex;
      font-size: 3rem;
      cursor: pointer;
      transition: .3s;
    }

    .nav-list li:hover,
    .nav-list li.active {
      color: var(--main-color);
    }

    .tooltip {
      position: absolute;
      top: -4rem;
      left: 50%;
      transform: translateX(-50%);
      padding: .3rem 1rem;
      background: var(--main-color);
      border-radius: .4rem;
      font-size: 1.6rem;
      color: var(--bg-color);
      font-weight: 500;
      white-space: nowrap;
      visibility: hidden;
      opacity: 0;
      transition: .3s;
    }

    .nav-list li:hover .tooltip,
    a:hover .tooltip,
    .portfolio-item:hover .work-info {
      visibility: visible;
      opacity: 1;
    }

    .container {
      width: 100vw;
      height: 100vh;
      perspective: 1500px;
      perspective-origin: 50%;
    }

    .box {
      position: relative;
      width: 100%;
      height: 100%;
      transform-style: preserve-3d;
      transform-origin: 50% 50% -50vw;
      transform: rotateY(0deg);
      transition: 2s;
      animation: animate-cube 4s ease-in-out backwards;
    }

    @keyframes animate-cube {
      0% {
        transform: scale(0) rotateY(-360deg);
      }

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


    .section {
      position: absolute;
      width: 100%;
      height: 100%;
      background: var(--bg-color);
      padding: 0 10%;
      backface-visibility: hidden;
    }

    .section.resume {
      transform: translateZ(-100vw) rotateY(-180deg);
      transform-origin: 50%;
    }

    .section.portfolio {
      transform: translateX(-50vw) translateZ(-50vw) rotateY(-90deg);
    }

    .section:nth-child(even) {
      background: var(--second-bg-color);
    }

    .section.about {
      transform: translateX(50vw) translateZ(-50vw) rotateY(90deg);
    }

    .section.contact {
      visibility: hidden;
      transition-delay: .5s;
    }

    .section.contact.active {
      visibility: visible;
    }

    .section.contact.action-contact {
      transition-delay: 1.5s;
    }

    .section.contact.action-contact.active {
      transition-delay: 0s;
    }

    .home,
    .about {
      display: flex;
      align-items: center;
      gap: 5rem;
    }

    .home-info h1 {
      font-size: 5.5rem;
      color: var(--main-color);
      line-height: 1;
    }

    .home-info h3 {
      font-size: 3rem;
    }

    .desc {
      margin: 1rem 0 2rem;
    }

    .home-info .btn-sci {
      display: flex;
      align-items: center;
    }

    .btn {
      display: inline-flex;
      padding: 1.2rem 3rem;
      background: var(--main-color);
      border-radius: 5rem;
      box-shadow: 0 0 1rem var(--main-color);
      font-size: 1.6rem;
      color: var(--bg-color);
      font-weight: 600;
      transition: .3s;
    }

    .btn:hover {
      box-shadow: none;
    }

    .home-info .btn-sci .sci {
      margin-left: 2rem;
    }

    .home-info .btn-sci .sci a {
      position: relative;
      display: inline-flex;
      padding: .8rem;
      border: .2rem solid var(--main-color);
      border-radius: 50%;
      font-size: 2rem;
      color: var(--main-color);
      margin: 0 .8rem;
      transition: .3s;
    }

    .home-info .btn-sci .sci a:hover {
      background: var(--main-color);
      color: var(--bg-color);
    }

    .img-box {
      position: relative;
      width: 32vw;
      height: 32vw;
      background: linear-gradient(var(--bg-color), var(--main-color));
      border-radius: 50%;
      border: .5rem solid var(--main-color);
      box-shadow: 0 0 2rem var(--main-color);
      display: flex;
      justify-content: center;
      overflow: hidden;
      transition: 1s;
    }

    .img-box.home-img:hover {
      box-shadow: 0 0 8rem var(--main-color);
    }

    .img-box img {
      position: absolute;
      top: 3rem;
      display: block;
      width: 85%;
      object-fit: cover;
    }

    .img-box.about-img {
      background: transparent;
      box-shadow: 0 0 2rem var(--main-color), inset 0 0 1rem var(--main-color);
    }

    .img-box.about-img img {
      z-index: -1;
    }

    .title {
      font-size: 4rem;
      text-align: center;
    }

    .about-info .title {
      text-align: left;
    }

    .about-info h3 {
      font-size: 2.5rem;
      color: var(--main-color);
      margin-top: -1rem;
    }

    .about-info .btn {
      padding: 1.2rem 4rem;
    }

    .resume,
    .portfolio {
      padding-top: 2rem;
      padding-bottom: 28rem;
    }

    .tab-box {
      display: flex;
      width: 100%;
      height: 5rem;
      margin-top: 1rem;
      margin-bottom: 2rem;
    }

    .tab-list {
      display: flex;
      align-items: center;
      width: 100%;
      cursor: pointer;
      border-bottom: .3rem solid var(--tab-list-color);
      color: var(--tab-list-color);
      transition: .5s;
    }

    .tab-list.resume-list.active,
    .tab-list.portfolio-list.active {
      border-color: var(--main-color);
      color: var(--main-color);
    }

    .resume-list:nth-child(2) {
      justify-content: center;
    }

    .resume-list:nth-child(3) {
      justify-content: flex-end;
    }

    .tab-list h3 {
      font-size: 2.5rem;
    }

    .tab-wrapper {
      position: relative;
      width: 100%;
      height: 100%;
    }

    .tab-grid {
      position: absolute;
      width: 100%;
      height: 100%;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
      gap: 2rem;
      overflow-y: auto;
      overflow-x: hidden;
      visibility: hidden;
      opacity: 0;
      transform: scale(.8);
    }

    .tab-grid.resume-box.active,
    .tab-grid.portfolio-box.active {
      visibility: visible;
      opacity: 1;
      transform: scale(1);
      transition: .5s;
    }

    .tab-item {
      display: flex;
      flex-direction: column;
      justify-content: center;
      background: var(--third-bg-color);
      border-radius: .8rem;
      padding: 2rem;
    }

    .tab-item h4 {
      font-size: 2.3rem;
    }

    .resume-item h4:nth-child(1),
    .resume-item h4:nth-child(3) {
      font-size: 1.7rem;
      color: var(--main-color);
      font-weight: 400;
    }

    .resume-item h4:nth-child(3) {
      position: relative;
      color: var(--white-color);
      margin-left: 2rem;
    }

    .resume-item h4:nth-child(3)::before {
      content: '';
      position: absolute;
      left: -2rem;
      top: 50%;
      transform: translateY(-50%);
      width: 1rem;
      height: 1rem;
      background: var(--main-color);
      border-radius: 50%;
    }

    .tab-item p {
      margin-top: 1rem;
    }

    .resume-box.skills {
      grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    }

    .resume-box.skills .resume-item {
      align-items: center;
    }

    .resume-box.skills .resume-item i {
      font-size: 8rem;
      transition: .3s;
    }

    .resume-box.skills .resume-item:hover i {
      color: var(--main-color);
    }

    .resume-box.skills .resume-item p {
      margin-top: 0;
    }

    .portfolio-list:nth-child(2) {
      justify-content: flex-end;
    }

    .portfolio-box.work .portfolio-item {
      position: relative;
    }

    .portfolio-box.work .portfolio-item::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      background: var(--third-bg-color);
      border-radius: 0.8rem;
      z-index: 1;
      opacity: 0;
      transition: 0.3s;
    }

    .portfolio-box.work .portfolio-item:hover::before {
      opacity: 0.9;
    }

    .portfolio-item .work-img {
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      border-radius: 0.8rem;
      overflow: hidden;
    }

    .portfolio-item .work-img img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: .3s;
    }

    .portfolio-item:hover .work-img img {
      transform: scale(1.2);
    }

    .portfolio-item .work-info {
      z-index: 1;
      visibility: hidden;
      opacity: 0;
      transition: .3s;
    }

    .portfolio-item .work-info h4 {
      line-height: 1;
    }

    .portfolio-item .work-info .tech-used {
      color: var(--main-color);
      border-bottom: 0.1rem solid var(--white-color);
      padding-bottom: 1rem;
      margin-bottom: 1rem;
    }

    .portfolio-item .portfolio-icon a {
      position: relative;
      display: inline-flex;
      padding: 1rem;
      background: var(--white-color);
      border-radius: 50%;
      font-size: 2.5rem;
      color: var(--bg-color);
      transition: .3s;
    }

    .portfolio-item .work-icon a:hover {
      background: var(--main-color);
    }

    .portfolio-item .work-icon a:nth-child(1) {
      margin-right: 1rem;
    }

    .portfolio-item .work-icon a:nth-child(1) i {
      transform: rotate(135deg);
    }

    .portfolio-item .service-icon {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: .5rem;
    }

    .portfolio-item .service-icon .icon {
      font-size: 5rem;
      margin-left: -0.3rem;
      transition: .3s;
    }

    .portfolio-item:hover .service-icon .icon {
      color: var(--main-color);
    }

    .portfolio-item:hover .service-icon a {
      background: var(--main-color);
    }

    .portfolio-item .service-icon a i {
      transform: rotate(-135deg);
      transition: .3s;
    }

    .portfolio-item .service-icon a:hover i {
      transform: rotate(-180deg);
    }

    .portfolio-box.service .portfolio-item h4 {
      transition: .3s;
    }

    .portfolio-box.service .portfolio-item:hover h4 {
      color: var(--main-color);
    }

    .contact {
      padding-top: 2rem;
      padding-bottom: 18rem;
    }

    .contact-wrapper {
      display: flex;
      justify-content: center;
      height: 100%;
    }

    .contact-form {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 70rem;
    }

    .contact-form h3 {
      font-size: 3rem;
      color: var(--main-color);
      margin-bottom: 1rem;
    }

    .contact-form .field-box {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
    }

    .contact-form .field-box input,
    .contact-form .field-box textarea {
      flex: 1 1 30rem;
      padding: 2rem;
      background: var(--third-bg-color);
      border-radius: .6rem;
      font-size: 1.6rem;
      color: var(--white-color);
    }

    .contact-form .field-box textarea {
      height: 20rem;
      resize: none;
    }

    .contact-form .contact-btn {
      margin-top: 2rem;
    }

    .contact-form .contact-btn .btn {
      cursor: pointer;
    }

    /* BREAKPOINTS */
    @media screen and (max-width: 1200px) {
      html {
        font-size: 55%;
      }
    }

    @media screen and (max-width: 992px) {
      .section {
        padding: 0 4%;
      }

      .resume,
      .portfolio {
        padding-top: 1.5rem;
        padding-bottom: 27rem;
      }

      .contact {
        padding-bottom: 10rem;
      }
    }

    @media screen and (max-width: 768px) {
      html {
        font-size: 50%;
      }

      .nav {
        bottom: 0;
      }

      .home,
      .about {
        flex-direction: column-reverse;
        justify-content: center;
        gap: 2rem;
        padding-bottom: 6rem;
      }

      .about {
        flex-direction: column;
      }

      .img-box {
        width: 35rem;
        height: 35rem;
      }

      .resume,
      .portfolio {
        padding-bottom: 25rem;
      }

      .contact {
        padding-bottom: 16rem;
      }
    }

    @media screen and (max-width: 600px) {

      .resume,
      .portfolio {
        padding-top: 1rem;
        padding-bottom: 22rem;
      }

      .tab-box {
        margin-top: 0;
      }

      .contact {
        padding-top: 1rem;
      }
    }

    @media screen and (max-width: 400px) {
      .nav {
        width: 100%;
        border-radius: 0;
      }

      .home-info,
      .about-info {
        text-align: center;
      }

      .home-info h1 {
        font-size: 5rem;
      }

      .home-info .btn-sci {
        flex-direction: column-reverse;
      }

      .home-info .btn-sci .sci {
        margin-left: 0;
        margin-bottom: 2rem;
      }

      .img-box {
        width: 30rem;
        height: 30rem;
      }

      .about-info .title {
        text-align: center;
      }
    }

    @media screen and (max-width: 350px) {
      .img-box {
        width: 25rem;
        height: 25rem;
      }

      .tab-list h3 {
        font-size: 2.3rem;
      }
    }