.main-section {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9;
  padding: 24px 0;
  background: #1b1b1b;
}

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

.header-logo {
  width: 170px;
  transition: transform 0.3s ease;
}

.header-logo:hover {
  transform: scale(0.95);
}

.page-nav {
  display: none;
}

.page-nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.page-nav-link {
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 16px;
  color: var(--style-w);
  border: 0.5px solid var(--style);
  border-radius: 24px;
  padding: 8px 20px;
  transition: background-color 0.3s ease;
}

.page-nav-link:hover {
  background-color: var(--style);
}

.menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;

  border-radius: 24px;
  width: 45px;
  height: 32px;
  background-color: #005100;
  transition: background-color 0.3s ease;
}

.menu-svg {
  fill: none;
  stroke: #d9d9d9;
}

.menu-btn:hover {
  background-color: #088008;
}

@media screen and (min-width: 1436px) {
  .main-section {
    padding: 28px 0;
  }

  .header-container {
    position: relative;
  }

  .page-nav {
    display: block;
  }

  .menu-btn {
    display: none;
  }

  #built-link {
    display: block;
  }
}

/* modal  */

.menu {
  position: fixed;
  top: 116px;
  left: 0;
  width: 100%;
  padding: 24px 0;
  z-index: 8;
  background: #1b1b1b;
  transform: translateX(100%);
  transition: transform 1s ease;
}

.menu-container {
  padding-left: 60px;
}

.menu-nav-list {
  flex-direction: column;
  align-items: flex-start;
  gap: 36px;
}

/* popup */

.page-popup {
  position: fixed;
  z-index: 10;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  border: 1px solid #2b2a32;
  border-radius: 7px;
  padding: 20px;
  transition: transform 0.4s ease;
  box-shadow: 5px 15px 20px 0 rgba(0, 0, 0, 0.25);
  background: #0d0d0d;
  border: 1px solid #fff;
}

.popup-text {
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 14px;
  line-height: 143%;
  color: var(--style-w);
  margin-bottom: 14px;

  a {
    text-decoration: underline;
    text-decoration-skip-ink: none;
    color: #6e7191;
  }
}

.popup-btn {
  font-family: var(--font-family);
  font-weight: 500;
  font-size: 14px;
  line-height: 143%;
  color: var(--style-w);
  display: block;
  text-align: center;
  border: 1px solid var(--style);
  border-radius: 8px;
  padding: 10px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.popup-btn:hover {
  background: var(--style);
}

.popup-wrap {
  display: flex;
  justify-content: center;
  gap: 32px;
}

@media screen and (min-width: 1436px) {
  .page-popup {
    padding: 20px 88px;
  }

  .popup-text {
    margin: 0;
    font-size: 14px;
  }

  .popup-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 80px;
  }

  .popup-wrap {
    flex-shrink: 0;
  }
}

/* hero  */

.dashboard {
  padding-top: 120px;
  background-image: url(../img/home-page.png);
  background-position: center;
  background-size: cover;
  position: relative;
}

.green {
  position: absolute;
  bottom: 0;
  right: 0;
  height: 100%;
  opacity: 0.7;
}

.home-content {
  position: relative;
  z-index: 2;
  border-radius: 16px;
  padding: 32px 12px;
  background: linear-gradient(180deg, #011b01 0%, rgba(1, 27, 1, 0) 100%);
  border: 0.1px solid var(--style-w);
}

.page-hero-title {
  font-family: var(--font-family);
  font-weight: 300;
  font-size: 48px;
  line-height: 108%;
  color: var(--style-w);
  margin-bottom: 16px;

  span {
    font-weight: 700;
    color: var(--style);
  }
}

.page-hero-text {
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 18px;
  line-height: 156%;
  color: #d9d9d9;
  margin-bottom: 16px;
}

.page-hero-description {
  font-family: var(--font-family);
  font-weight: 275;
  font-size: 14px;
  line-height: 143%;
  color: #d9d9d9;
  margin-bottom: 40px;

  span {
    font-weight: 700;
  }
}

.page-hero-link {
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 16px;
  line-height: 132%;
  color: var(--style-w);

  text-align: center;
  display: block;
  width: 300px;
  max-width: 100%;
  border-radius: 24px;
  padding: 16px;
  background: linear-gradient(90deg, #00b700 0%, #005100 100%);
}

.page-hero-link:hover {
  background: var(--style);
}

@media screen and (min-width: 768px) {
  /* .dashboard {
    padding-top: 120px;
    background-image: url(../img/green.png), url(../img/home-page.png);
    background-position: top right, center;
    background-size: contain, cover;
    background-repeat: no-repeat;
  } */
}

@media screen and (min-width: 1436px) {
  .dashboard {
    padding-top: 144px;
  }

  .home-content {
    width: 726px;
  }

  .page-hero-title {
    font-size: 60px;
  }

  .page-hero-text {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .page-hero-description {
    font-size: 16px;
    margin-bottom: 48px;
  }
}

/* challenge */

.challenge-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 28px;

  li {
    border-radius: 16px;
    padding: 44px 24px;
    background: linear-gradient(180deg, #011b01 0%, rgba(1, 27, 1, 0) 100%);
    border: 0.5px solid var(--style-w);
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 20px;
    line-height: 140%;
    color: var(--style-w);
  }

  img {
    width: 39px;
    margin-bottom: 32px;
  }
}

.challenge-text {
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 18px;
  line-height: 156%;
  color: #d9d9d9;
  margin-bottom: 60px;
}

@media screen and (min-width: 1436px) {
  #challenge {
    .section-description {
      max-width: 800px;
      margin-left: auto;
      text-align: end;
    }

    .section-title {
      display: block;
      text-align: center;
      width: 200px;
      margin-left: auto;
    }
  }

  .challenge-list {
    gap: 60px;
    flex-direction: row;
    margin-bottom: 40px;

    li {
      width: calc((100% - 120px) / 3);
    }
  }

  .challenge-content {
    display: flex;
    align-items: center;
    gap: 60px;
  }

  .challenge-image {
    flex-shrink: 0;
  }

  .challenge-text {
    margin: 0;
  }
}

/* platform */

#platform {
  position: relative;
  overflow: hidden;
}

.ellise {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
  z-index: -1;
}

.platform-slide {
  width: 280px;
  max-width: 100%;

  display: flex;
  flex-direction: column;
  gap: 20px;

  div {
    border-radius: 360px;
    padding: 12px;
    background: #0d0d0d;
    border: 1px solid #3d3d3d;

    font-family: var(--font-family);
    font-weight: 300;
    font-size: 18px;
    line-height: 156%;
    text-align: center;
    color: var(--style-w);
  }

  .platform-item2 {
    transform: translateX(-50%);
  }
}

.platform-text {
  font-family: var(--font-family);
  font-weight: 700;
  font-size: 24px;
  line-height: 133%;
  color: var(--style-w);
  margin-bottom: 20px;
  margin-top: 20px;
}

.platform-list {
  list-style: disc;
  padding-left: 20px;
  font-family: var(--font-family);
  font-weight: 300;
  font-size: 18px;
  line-height: 156%;
  color: var(--style-w);
}

@media screen and (min-width: 768px) {
  .platform-list {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0 32px;

    li {
      width: calc((100% - 32px) / 2);
    }
  }

  .platform-text {
    margin: 40px 0;
  }
}

@media screen and (min-width: 1436px) {
  .platform-list {
    gap: 0 104px;

    li {
      width: calc((100% - 208px) / 3);
    }
  }
}

/* whom */

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

  li {
    border-radius: 24px;
    padding: 16px;
    border: 1px solid transparent;
    transition: border-color 0.4s ease;
    background: linear-gradient(180deg, #011b01 0%, rgba(1, 27, 1, 0) 100%);
  }

  p {
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 20px;
    line-height: 140%;
    color: var(--style-w);
    margin-bottom: 12px;
  }

  span {
    font-family: var(--font-family);
    font-weight: 400;
    font-size: 16px;
    line-height: 150%;
    color: #a9a9a9;
  }

  .active {
    border-color: var(--style);
  }
}

.whom-container {
  border-radius: 28px;
  background-color: #202020;
  background-image: url(../img/man-gray-sweatshirt-with-arms-crossed.png);
  background-size: contain;
  background-position: bottom center;
  background-repeat: no-repeat;
  padding: 15px;
  padding-top: 328px;

  h5 {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 20px;
    line-height: 140%;
    color: var(--style-w);
    margin-bottom: 4px;
  }

  span {
    display: block;
    font-family: var(--font-family);
    font-weight: 375;
    font-size: 16px;
    line-height: 150%;
    color: var(--style-w);
    margin-bottom: 24px;
  }

  p {
    font-family: var(--font-family);
    font-style: italic;
    font-weight: 400;
    font-size: 16px;
    line-height: 150%;
    color: var(--style);
  }
}

@media screen and (min-width: 768px) {
  .whom-list {
    flex-direction: row;
    flex-wrap: wrap;

    li {
      width: calc((100% - 20px) / 2);
    }
  }
}

@media screen and (min-width: 1436px) {
  .whom-content {
    display: flex;
    flex-direction: row-reverse;
    gap: 44px;
    align-items: center;
  }

  .whom-container {
    border-radius: 40px;
    width: 402px;
    flex-shrink: 0;
    padding: 24px;
    padding-top: 348px;
  }

  .whom-list {
    gap: 24px;
    border-radius: 24px;
    padding: 28px 24px;

    li {
      width: calc((100% - 24px) / 2);
    }

    p {
      font-size: 28px;
    }

    span {
      font-size: 16px;
    }
  }
}

/* futures */

#futures {
  padding-bottom: 0;
  .green {
    border-color: var(--style);
  }
}

.futures-wrap {
  border-radius: 40px;
  height: 695px;
  background-image: url(../img/futures.png);
  background-position: center;
  background-size: cover;
}

.futures-list {
  transform: translateY(-180px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.futures-item {
  border: 1px solid #d9d9d9;
  border-radius: 30px;
  padding: 28px 16px;
  transition: border-color 0.4s ease;
  background: #111;

  p {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 20px;
    line-height: 140%;
    text-align: center;
    color: var(--style);
    margin-bottom: 24px;
  }

  ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  li {
    display: flex;
    align-items: center;
    justify-content: space-between;

    font-family: var(--font-family);
    font-weight: 300;
    font-size: 16px;
    line-height: 150%;
    text-transform: lowercase;
    color: #d9d9d9;
  }
}

@media screen and (min-width: 1436px) {
  .futures-list {
    width: 1166px;
    margin: 0 auto;
    transform: translateY(-100px);
    flex-direction: row;
    gap: 64px;
  }

  .futures-item {
    width: calc((100% - 128px) / 3);
    border-radius: 30px;
    padding: 48px 38px;

    h5 {
      font-size: 28px;
      margin-bottom: 40px;
    }
  }
}

/* compliance */

.compliance-text {
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 24px;
  line-height: 133%;
  text-transform: capitalize;
  color: var(--style-w);
  margin-bottom: 24px;
}

.compliance-list {
  list-style: disc;
  padding-left: 20px;
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 16px;
  line-height: 150%;
  text-transform: capitalize;
  color: var(--style-w);
  margin-bottom: 16px;
}

.compliance-description {
  font-family: var(--font-family);
  font-weight: 300;
  font-size: 16px;
  line-height: 150%;
  text-transform: capitalize;
  color: var(--style-w);
  margin-bottom: 28px;

  span {
    font-weight: 700;
    color: var(--style);
  }
}

.compliance1 {
  width: 100%;
  margin-bottom: 16px;
}

.compliance1 {
  width: 100%;
}

@media screen and (min-width: 768px) {
  .compliance-img-wrap {
    display: flex;
    align-items: flex-end;
    gap: 24px;
    flex-shrink: 0;
  }

  .compliance1 {
    width: auto;
    margin: 0;
  }

  .compliance1 {
    width: auto;
  }

  .compliance-description {
    font-size: 20px;
    margin: 0;
  }
}

@media screen and (min-width: 1436px) {
  .container-compliance {
    display: flex;
    align-items: flex-end;
    gap: 56px;
  }

  .compliance-text {
    font-size: 32px;
  }

  .compliance-list {
    font-size: 20px;
  }
}

/* energy */

#energy {
  background-image: url(../img/ellise.png);
  background-position: center;
  background-repeat: no-repeat;
}

.energy-text {
  font-family: var(--font-family);
  font-weight: 300;
  font-size: 20px;
  line-height: 140%;
  text-align: center;
  color: var(--style-w);
  margin-bottom: 40px;
}

.energy-link {
  margin: 0 auto;
}

@media screen and (min-width: 1436px) {
  .energy-text {
    width: 1026px;
    margin: 0 auto;
    font-size: 28px;
    margin-bottom: 40px;
  }
}

/* footer */

.footer {
  padding: 36px 0;
  background: #010101;
}

.footer-logo {
  width: 250px;
  margin: 0 auto;
  margin-bottom: 20px;
}

.footer-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  margin-bottom: 24px;

  font-family: var(--font-family);
  font-weight: 275;
  font-size: 16px;
  line-height: 150%;
  color: var(--style-w);

  a:hover {
    text-decoration: underline;
  }
}

.footer-text {
  font-family: var(--font-family);
  font-weight: 275;
  font-size: 16px;
  line-height: 150%;
  color: var(--style-w);
  text-align: center;
  margin-bottom: 24px;
}

.footer-mail-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.linkedin {
  display: block;
  width: 27px;
  transition: transform 0.3s ease;
}
.linkedin:hover {
  transform: scale(1.2);
}

@media screen and (min-width: 1436px) {
  .footer {
    padding: 36px 0;
  }

  .footer-logo {
    width: 350px;
    margin-bottom: 20px;
  }

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

  .footer-list {
    margin: 0;
  }

  .footer-text {
    margin: 0;
  }
}

/* loader */

#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(94, 95, 147, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 6px solid #ccc;
  border-top-color: var(--style);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* scroll */

#scrollTopBtn {
  position: fixed;
  bottom: 30px;
  right: 20px;
  border: 1px solid var(--style-w);
  color: var(--style);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
  z-index: 7;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: border-color 0.4s ease, transform 0.4s ease;
}

#scrollTopBtn:hover {
  border-color: var(--style);

  svg {
    stroke: var(--style);
  }
}

#scrollTopBtn.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ********************* */

.hidden {
  display: none;
}

.menu-transform {
  transform: translateX(0);
}

.click {
  transform: rotate(135deg);
}

.popup-click {
  transform: translateY(130%) translateX(-50%);
}

.overflow {
  overflow: hidden;
}