:root {
    --bg-primary: rgb(241 245 249);
    --bg-secondary: rgb(248 250 252);
    --bg-border: rgb(203 213 225);
    --text-primary: rgb(15 23 42);
    --text-secondary: rgb(71 85 105);
    --box-shadow: rgba(48, 46, 77, 0.1);
  }
  body.dark {
    --bg-primary: rgb(24 24 27);
    --bg-secondary: rgb(39 39 42);
    --bg-border: rgb(113 113 122);
    --text-primary: rgb(248 250 252);
    --text-secondary: rgb(226 232 240);
    --box-shadow: rgba(228, 228, 231, 0.1);
  }
  body {
    direction: rtl;
    line-height: 1.5;
    font-size: 16px;
    font-family: "vazir", Helvetica, sans-serif;
  }
  * {
    margin: 0;
    padding: 0;
    outline: none;
    text-decoration: none;
    box-sizing: border-box;
  }
  ::before,
  ::after {
    box-sizing: border-box;
  }
  ul {
    list-style: none;
  }
  a {
    color: var(--text-secondary);
  }
  .section {
    background-color: var(--bg-primary);
    min-height: 100vh;
    display: block;
    padding: 0 30px;
    position: fixed;
    right: 270px;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 0;
    overflow-y: auto;
    overflow-x: hidden;
    transition: right 0.3s ease;
    scrollbar-width: thin;
    scrollbar-color: var(--skin-color) var(--bg-secondary);
  }
  .section::-webkit-scrollbar {
    width: 11px;
  }
  .section::-webkit-scrollbar-track {
    background: var(--bg-secondary);
  }
  .section::-webkit-scrollbar-thumb {
    background-color: var(--skin-color);
    border-radius: 6px;
    border: 3px solid var(--bg-secondary);
  }
  
  .section.back-section {
    z-index: 1;
  }
  .section.active {
    z-index: 2;
    animation: slideSection 1s ease;
  }
  @keyframes slideSection {
    0% {
      transform: translateX(-100%);
    }
    100% {
      transform: translateX(0%);
    }
  }
  .hidden {
    display: none !important;
  }
  
  .padding-rl-15 {
    padding: 0 15px;
  }
  .container {
    max-width: 1100px;
    width: 100%;
    margin: auto;
  }
  .section .container {
    padding: 60px 0 70px 0;
  }
  .section-title {
    flex: 0 0 100%;
    max-width: 100%;
    margin-bottom: 50px;
  }
  .section-title h2 {
    font-size: 40px;
    color: var(--text-primary);
    font-weight: 700;
    position: relative;
  }
  .section-title h2::before {
    content: "";
    height: 4px;
    width: 70px;
    background-color: var(--skin-color);
    position: absolute;
    top: 100%;
    right: 0;
  }
  .section-title h2::after {
    content: "";
    height: 4px;
    width: 35px;
    background-color: var(--skin-color);
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
  }
  .row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
    position: relative;
  }
  .btn {
    font-size: 16px;
    font-weight: 500;
    padding: 10px 30px;
    color: white;
    border-radius: 10px;
    display: inline-block;
    background-color: var(--skin-color);
    transition: transform 0.3s ease;
  }
  .btn:hover {
    transform: scale(1.05);
  }
  .shadow-dark {
    box-shadow: 0 0 20px var(--box-shadow);
  }
  .aside {
    width: 270px;
    height: 100%;
    padding: 30px;
    border-left: 1px solid var(--bg-border);
    background-color: var(--bg-secondary);
    position: fixed;
    right: 0;
    top: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: right 0.3s ease;
  }
  .aside .logo {
    position: absolute;
    top: 50px;
    font-size: 30px;
  }
  .aside .logo a {
    color: var(--text-primary);
    font-weight: 600;
    padding: 15px 20px;
    font-size: 30px;
    position: relative;
  }
  .aside .logo a::before {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 0 5px;
    border-bottom: 5px solid var(--skin-color);
    border-left: 5px solid var(--skin-color);
    bottom: 0;
    left: 0;
  }
  .aside .logo a::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 0 5px;
    border-top: 5px solid var(--skin-color);
    border-right: 5px solid var(--skin-color);
    top: 0;
    right: 0;
  }
  .aside .nav-toggler {
    height: 40px;
    width: 45px;
    border: 1px solid var(--bg-border);
    cursor: pointer;
    position: fixed;
    right: 300px;
    top: 20px;
    border-radius: 5px;
    background-color: var(--bg-secondary);
    display: none;
    align-items: center;
    justify-content: center;
    transition: right 0.3s ease;
  }
  .aside .nav-toggler span {
    width: 18px;
    height: 2px;
    background-color: var(--skin-color);
    display: inline-block;
    position: relative;
  }
  .aside .nav-toggler.open span {
    background-color: transparent;
  }
  .aside .nav-toggler span::before {
    content: "";
    width: 18px;
    height: 2px;
    background-color: var(--skin-color);
    position: absolute;
    top: -6px;
    left: 0;
    transition: transform 0.5s ease;
  }
  .aside .nav-toggler.open span::before {
    transform: rotate(45deg);
    top: 0;
  }
  .aside .nav-toggler span::after {
    content: "";
    width: 18px;
    height: 2px;
    background-color: var(--skin-color);
    position: absolute;
    top: 6px;
    left: 0;
    transition: transform 0.5s ease;
  }
  .aside .nav-toggler.open span::after {
    transform: rotate(-45deg);
    top: 0;
  }
  .aside .nav {
    margin-top: 50px;
  }
  .aside .nav li {
    margin-bottom: 20px;
    display: block;
  }
  .aside .nav li a {
    font-size: 16px;
    font-weight: 600;
    display: block;
    border-bottom: 1px solid var(--bg-border);
    color: var(--text-primary);
    padding: 5px 15px;
  }
  .aside .nav li a.active {
    color: var(--skin-color);
  }
  /* home section */
  .home {
    min-height: 100vh;
    display: flex;
    color: var(--text-primary);
  }
  .home .home-info {
    flex: 0 0 60%;
    max-width: 60%;
  }
  h3.hello {
    font-size: 20px;
    margin: 15px 0;
  }
  h3.hello span {
    font-size: 25px;
    font-weight: 600;
    color: var(--skin-color);
  }
  h3.my-professtion {
    font-size: 25px;
    margin: 15px 0;
  }
  #typing {
    color: var(--skin-color);
  }
  .home-info p {
    margin-bottom: 60px;
    font-size: 20px;
    color: var(--text-secondary);
  }
  .home .home-img {
    flex: 0 0 40%;
    max-width: 40%;
    text-align: center;
    position: relative;
  }
  .home-img::before {
    content: "";
    position: absolute;
    width: 70px;
    height: 70px;
    border-radius: 0 15px;
    border-top: 10px solid var(--skin-color);
    border-right: 10px solid var(--skin-color);
    right: 20px;
    top: -40px;
  }
  .home-img::after {
    content: "";
    position: absolute;
    width: 70px;
    height: 70px;
    border-radius: 0 15px;
    border-bottom: 10px solid var(--skin-color);
    border-left: 10px solid var(--skin-color);
    left: 20px;
    bottom: -40px;
  }
  .home .home-img img {
    height: 350px;
    margin: auto;
  }
  /* about section */
  .about .about-content {
    flex: 0 0 100%;
    width: 100%;
  }
  .about .about-content .about-text {
    flex: 0 0 100%;
    max-width: 100%;
  }
  .about .about-content .about-text h3 {
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: 600px;
    color: var(--text-primary);
  }
  .about .about-content .about-text h3 span {
    color: var(--skin-color);
  }
  .about .about-content .about-text p {
    font-size: 16px;
    line-height: 25px;
    color: var(--text-secondary);
  }
  .about .about-content .personal-info {
    flex: 0 0 60%;
    max-width: 60%;
    margin-top: 40px;
  }
  .about .about-content .personal-info .info-item {
    flex: 0 0 50%;
    max-width: 50%;
  }
  .about .about-content .personal-info .info-item p {
    font-weight: 500;
    padding: 10px 0;
    font-size: 16px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--bg-border);
  }
  .about .about-content .personal-info .info-item p span {
    font-weight: 400;
    color: var(--text-secondary);
    margin-right: 4px;
  }
  .about .about-content .personal-info .info-item p a {
    font-weight: 400;
    margin-right: 4px;
  }
  .about .about-content .personal-info .buttons {
    margin-top: 30px;
  }
  
  .about .about-content .personal-info .buttons .btn {
    margin: 10px 0 0 15px;
  }
  .about .about-content .skills {
    flex: 0 0 40%;
    max-width: 40%;
    margin-top: 40px;
  }
  .about .about-content .skills .skill-item {
    flex: 0 0 100%;
    max-width: 100%;
    margin-bottom: 10px;
  }
  .about .about-content .skills .skill-item h5 {
    line-height: 40px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-primary);
  }
  .about .about-content .skills .skill-item .progress {
    position: relative;
    height: 4px;
    width: 100%;
    background-color: var(--bg-border);
    border-radius: 3px;
  }
  .about .about-content .skills .skill-item .progress .progress-in {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    border-radius: 3px;
    background-color: var(--skin-color);
  }
  .about .about-content .skills .skill-item .skill-percent {
    position: absolute;
    left: 0;
    top: -25px;
    color: var(--text-primary);
    font-weight: 400;
    font-size: 14px;
  }
  .about .about-content .learning,
  .about .about-content .experience {
    flex: 0 0 50%;
    max-width: 50%;
    margin-top: 30px;
  }
  .about .about-content h3.title {
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: 600;
    color: var(--text-primary);
  }
  .about .about-content .timeline-box {
    flex: 0 0 100%;
    max-width: 100%;
  }
  .about .about-content .timeline {
    background-color: var(--bg-secondary);
    width: 100%;
    position: relative;
    padding: 30px 15px;
    border: 1px solid var(--bg-border);
    border-radius: 5px;
  }
  .about .about-content .timeline .timeline-item {
    position: relative;
    padding: 0 37px 40px 0;
  }
  .about .about-content .timeline .timeline-item:last-child {
    padding-bottom: 0;
  }
  .about .about-content .timeline .timeline-item:before {
    content: "";
    position: absolute;
    width: 1px;
    height: 100%;
    right: 5px;
    top: 0;
    background-color: var(--skin-color);
  }
  .about .about-content .timeline .circle-dot {
    position: absolute;
    right: 0;
    top: 0;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background-color: var(--skin-color);
  }
  .about .about-content .timeline .timeline-date {
    font-weight: 400;
    font-size: 12px;
    margin-bottom: 5px;
    color: var(--text-secondary);
  }
  .about .about-content .timeline .timeline-date .fa {
    margin-left: 5px;
  }
  .about .about-content .timeline .timeline-title {
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--text-primary);
  }
  .about .about-content .timeline .timeline-text {
    line-height: 24px;
    font-size: 14px;
    text-align: justify;
    color: var(--text-secondary);
  }
  /* services section */
  .services .container {
    padding-bottom: 40px;
  }
  .services .service-item {
    flex: 0 0 50%;
    max-width: 50%;
    margin-bottom: 25px;
  }
  .services .service-item .service-item-inner {
    background-color: var(--bg-secondary);
    border: 1px solid var(--bg-border);
    border-radius: 10px;
    padding: 30px 15px;
    text-align: center;
    transition: box-shadow 0.3s ease;
  }
  .services .service-item .service-item-inner:hover {
    box-shadow: 0 0 20px var(--box-shadow);
  }
  .services .service-item .service-item-inner .icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: block;
    margin: 0 auto 30px;
    text-align: center;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
  }
  .services .service-item .service-item-inner .icon .fa,
  .services .service-item .service-item-inner .icon .fa-brands {
    font-size: 40px;
    line-height: 60px;
    color: var(--skin-color);
    transition: font-size 0.3s ease, color 0.3s ease;
  }
  .services .service-item .service-item-inner:hover .icon {
    background-color: var(--skin-color);
    box-shadow: 0 0 5px var(--skin-color);
  }
  .services .service-item .service-item-inner:hover .icon .fa,
  .services .service-item .service-item-inner:hover .icon .fa-brands {
    font-size: 25px;
    color: #fff;
  }
  .services .service-item .service-item-inner h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
  }
  .services .service-item .service-item-inner p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 25px;
  }
  /* portfolio section */
  .portfolio .container {
    padding-bottom: 40px;
  }
  .portfolio .portfolio-heading {
    flex: 0 0 100%;
    max-width: 100%;
    margin-bottom: 40px;
  }
  .portfolio .portfolio-heading h2 {
    color: var(--text-primary);
    font-weight: 400;
  }
  .portfolio .portfolio-item {
    flex: 0 0 33.33%;
    max-width: 33.33%;
    margin-bottom: 30px;
  }
  .portfolio .portfolio-item-inner {
    border: 5px solid var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
  }
  .portfolio .portfolio-item-inner .portfolio-img img {
    width: 100%;
    display: block;
  }
  /* contact section*/
  .contact-title {
    color: var(--skin-color);
    text-align: center;
    font-size: 25px;
    margin-bottom: 10px;
  }
  .contact-sub-title {
    color: var(--text-primary);
    text-align: center;
    font-size: 16px;
    margin-bottom: 60px;
  }
  .contact .contact-info-item {
    flex: 0 0 25%;
    max-width: 25%;
    text-align: center;
    margin-bottom: 60px;
  }
  .contact .contact-info-item .icon {
    display: inline-block;
  }
  .contact .contact-info-item .icon .fa-solid,
  .contact .contact-info-item .icon .fa-brands {
    font-size: 35px;
    color: var(--skin-color);
  }
  .contact .contact-info-item h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 15px 0 5px;
  }
  .contact .contact-info-item p {
    font: 16px;
    font-weight: 400;
    line-height: 25px;
    color: var(--text-secondary);
  }
  .contact .contact-form {
    flex: 0 0 100%;
    max-width: 100%;
  }
  .contact .contact-form .col-6 {
    flex: 0 0 50%;
    max-width: 50%;
  }
  
  .contact .contact-form .col-12 {
    flex: 0 0 100%;
    max-width: 100%;
  }
  .contact .contact-form .form-item {
    margin-bottom: 30px;
  }
  .contact .contact-form .form-item .form-control {
    width: 100%;
    height: 40px;
    border-radius: 10px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--bg-border);
    padding: 10px 20px;
    font-size: 16px;
    font-family: "vazir", Helvetica, sans-serif;
    color: var(--text-secondary);
    transition: box-shadow 0.3s ease;
  }
  .contact .contact-form .form-item .form-control:focus {
    box-shadow: 0 0 20px var(--box-shadow);
  }
  .contact .contact-form .form-item textarea.form-control {
    height: 140px;
  }
  .contact .contact-form .btn {
    height: 50px;
    padding: 0 50px;
    border: none;
    direction: rtl;
    font-family: "vazir", Helvetica, sans-serif;
  }
  /* responsive */
  @media (max-width: 1199px) {
    .section .container {
      padding-top: 70px;
    }
    .aside {
      right: -270px;
    }
    .aside.open {
      right: 0;
    }
    .aside .nav-toggler {
      display: flex;
      right: 30px;
    }
    .aside .nav-toggler.open {
      right: 300px;
    }
    .section {
      right: 0;
    }
    .section.open {
      right: 270px;
    }
    .about .about-content .personal-info .info-item p span {
      display: block;
      margin-left: 0;
    }
  }
  @media (max-width: 991px) {
    .main-content .home.section .container .row {
      flex-direction: column-reverse;
    }
    .about .about-content .learning,
    .about .about-content .experience,
    .home .home-info {
      flex: 0 0 100%;
      max-width: 100%;
    }
    .home .home-img {
      flex: 0 0 100%;
      max-width: 100%;
      margin-bottom: 60px;
    }
    .contact .contact-info-item,
    .portfolio .portfolio-item,
    .services .service-item {
      flex: 0 0 50%;
      max-width: 50%;
    }
  }
  @media (max-width: 767px) {
    .contact .contact-form .col-6,
    .contact .contact-info-item,
    .portfolio .portfolio-item,
    .services .service-item,
    .about .about-content .skills,
    .about .about-content .personal-info {
      flex: 0 0 100%;
      max-width: 100%;
    }
  }