* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Roboto", sans-serif;
}

:root {
  font-size: clamp(1rem, 1.2vmax, 1.2rem);
}

html,
body {
  height: 100%;
}
body {
  --accent-color: #3d5afe;
  --secondary-color: rgb(26, 45, 63);
  --text-color: 36, 36, 36;
  --foreground-color: 252, 253, 255;
  --background-color: 241, 243, 248;
  --danger-color: rgb(255, 75, 75);
  --green: #1cad59;
  --yellow: rgb(220, 165, 0);
  --inline-padding: max(1rem, 6vw);
  background-color: rgba(var(--background-color), 1);
  color: rgba(var(--text-color), 1);
}

body[data-theme="dark"] {
  --accent-color: #6d83ff;
  --secondary-color: #d60739;
  --text-color: 220, 220, 220;
  --foreground-color: 33, 54, 75;
  --background-color: 17, 30, 43;
  --danger-color: rgb(255, 106, 106);
  --green: #00e676;
  --yellow: rgb(255, 213, 5);
}

p,
strong {
  font-size: 1rem;
  max-width: 70ch;
  line-height: 1.6;
  color: rgba(var(--text-color), 0.9);
}
img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
h1 {
  font-size: max(2rem, 4vw);
}
h2 {
  font-size: max(1.8rem, 3vw);
}
h3 {
  font-size: max(1.5rem, 2vw);
}
h4 {
  font-size: max(1.2rem, 1.3vw);
}
img {
  object-fit: contain;
}
ul {
  list-style: none;
}
ol {
  padding-left: 1rem;
  li {
    color: rgba(var(--text-color), 0.9);
    &:not(:last-child) {
      margin-bottom: 0.5rem;
    }
  }
}
button,
.button {
  display: inline-flex;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  color: rgba(var(--text-color), 1);
  background-color: rgba(var(--text-color), 0.1);
  border-radius: 3rem;
  letter-spacing: 0.05em;
  padding: 0.5rem 1rem;
}
.icon {
  width: 1.2rem;
  height: 1.2rem;
  fill: rgba(var(--text-color), 0.9);
}
.flex {
  display: flex;
}
.align-items-center {
  align-items: center;
}
.justify-content-center {
  justify-content: center;
}
.justify-content-center {
  justify-content: center;
}
.justify-self-start {
  justify-self: start;
}
.justify-self-end {
  justify-self: end;
}
.justify-self-center {
  justify-self: center;
}
.align-self-start {
  align-self: start;
}
.align-self-end {
  align-self: end;
}
.align-self-center {
  align-self: center;
}
.flex-direction-column {
  flex-direction: column;
}
.flex-1 {
  flex: 1;
}
.grid {
  display: grid;
}
.gap-0-3 {
  gap: 0.3rem;
}
.gap-0-5 {
  gap: 0.5rem;
}
.gap-1 {
  gap: 1rem;
}
.gap-1-5 {
  gap: 1.5rem;
}
.gap-2 {
  gap: 2rem;
}
.gap-3 {
  gap: 3rem;
}
.gap-4 {
  gap: 4rem;
}
.gap-5 {
  gap: 5rem;
}
.text-center {
  text-align: center;
}
.reveal {
  display: flex;
  overflow: hidden;
  span {
    opacity: 0;
    transform-origin: left bottom;
  }
}
.move-in {
  opacity: 0;
}
article {
  & > * {
    padding: max(1rem, 2vw) var(--inline-padding);
  }
}
#main_header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  background-color: rgba(var(--foreground-color), 0.5);
  z-index: 10;
  backdrop-filter: blur(1rem);
  padding: max(1rem, 1.5vw) var(--inline-padding);
  a {
    color: rgba(var(--text-color), 0.9);
    text-decoration: none;
  }
  ul {
    list-style: none;
    display: flex;
    gap: 0.8rem;
    a {
      font-weight: 500;
      font-size: 0.9rem;
      &::after {
        content: "";
        display: block;
        width: 0;
        height: 0.15rem;
        background: rgba(var(--accent-color), 1);
        transition: width 0.3s;
        margin: auto;
        margin-top: 0.1rem;
        border-radius: 0.5rem;
      }
      &.active {
        &::after {
          width: 1rem;
        }
      }
    }
    .icon {
      display: flex;
    }
  }
}
.tagline {
  padding-top: 5vmax;
  padding-bottom: 5vmax;
}
#above_fold {
  padding-top: 8rem;
  h2 {
    position: relative;
    margin: auto;
    text-align: center;
  }
  &__section {
    justify-content: center;
    justify-self: center;
    text-align: center;
    &::after {
      content: "";
      display: block;
      width: 100%;
      height: 1px;
      background: rgba(var(--text-color), 1);
      margin: auto;
      margin-top: 5rem;
    }
  }
  .milestones {
    display: grid;
    justify-content: flex-start;
    justify-items: flex-start;
    &--title-only {
      .milestone {
        grid-template-areas: "label title";
      }
    }
    &--description-only {
      .milestone {
        grid-template-areas: "label description";
      }
    }
  }
  .milestone {
    display: grid;
    max-width: 42rem;
    width: auto;
    gap: 1rem 2rem;
    align-items: center;
    justify-content: flex-start;
    padding-right: 0;
    &:not(:last-child) {
      padding-bottom: 3rem;
    }
    &__label {
      grid-area: label;
      align-items: flex-start;
      justify-content: center;
      background-color: rgba(var(--text-color), 1);
      color: rgba(var(--foreground-color), 1);
      &::before {
        width: 0.1rem;
        height: 100%;
        background-color: rgba(var(--text-color), 0.5);
      }
    }
    &__title {
      grid-area: title;
      margin-top: -0.1em;
    }
  }
}
#hero_illustration {
  margin: auto;
  width: min(100%, 26rem);
}
section {
  display: grid;
  position: relative;
  align-content: center;
  padding-top: 3rem;
  padding-bottom: 6rem;
  min-height: 40vmax;
  &:nth-of-type(2) {
    overflow: hidden;
  }
}
.section-header {
  display: flex;
  flex-direction: column;
  text-align: center;
  margin-bottom: 3rem;
  &::after {
    content: "•••";
    line-height: 0.5;
  }
}
#payment_section {
  min-height: 80vh;
}
#bitcoin_lineart {
  position: absolute;
  opacity: 0.2;
  height: 80vh;
  width: auto;
  align-self: center;
  right: 0;
}

#el_salvador_section {
  position: relative;
  overflow: hidden;
  min-height: 60vmax;
  background: linear-gradient(to left, #00000080, #000000d0),
    url("../assets/representational/esau-gonzalez-bQefbdSC4ko-unsplash.jpg")
      no-repeat center center fixed;
  background-size: cover;
  color: rgba(var(--foreground-color), 1);
  justify-content: flex-end;
  text-align: right;
  h2,
  h4 {
    text-align: right;
    justify-content: flex-end;
  }
  p {
    color: rgba(var(--foreground-color), 0.9);
    text-align: right;
  }
  .milestone {
    display: grid;
    max-width: 42rem;
    width: auto;
    gap: 1rem 2rem;
    grid-template-areas: "title label" "description label";
    align-items: center;
    padding-right: 0;
    justify-content: flex-end;
    &:not(:last-child) {
      padding-bottom: 3rem;
    }
    &__label {
      align-items: flex-start;
      justify-content: center;
      grid-area: label;
      justify-self: flex-end;
      &::before {
        width: 0.1rem;
        height: 100%;
      }
    }
    &__title {
      grid-area: title;
      margin-top: -0.1em;
    }
    &__description {
      grid-area: description;
    }
  }
}
#projectb_milestones_section {
  background: linear-gradient(to left, #000000d0, #000000d0),
    url("../assets/representational/nik-z1d-LP8sjuI-unsplash.jpg") no-repeat top
      20% center fixed;
  background-size: cover;
  color: rgba(var(--foreground-color), 1);
  padding-bottom: 3rem;
  p {
    color: rgba(var(--foreground-color), 0.9);
  }
  .carousel-control {
    border: solid thin rgba(var(--foreground-color), 0.5);
    background: rgba(var(--foreground-color), 1);
  }
  .milestone {
    isolation: isolate;
    &__label {
      &::before {
        background-color: rgba(var(--foreground-color), 1);
      }
    }
  }
}
.carousel {
  display: flex;
  overflow-x: auto;
  border-radius: 0.5rem;
  margin-top: 1.5rem;
  scroll-snap-type: x mandatory;
  scroll-padding: 0 calc(1 * var(--inline-padding));
  margin: 3rem calc(-1 * var(--inline-padding));
  padding: 1rem calc(1 * var(--inline-padding));
  scrollbar-width: none;
  &::-webkit-scrollbar {
    display: none;
  }
}
.milestone {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: min(calc(100% - 1rem), 28rem);
  flex-shrink: 0;
  scroll-snap-align: start;
  padding-right: 3rem;
  isolation: isolate;
  &:last-of-type {
    padding-right: 0;
    .milestone__label {
      &::before {
        display: none;
      }
    }
  }
  &__label {
    display: flex;
    align-items: center;
    background-color: rgba(var(--foreground-color), 1);
    color: rgba(var(--text-color), 1);
    padding: 0.4rem 0.5rem;
    align-self: flex-start;
    border-radius: 0.3rem;
    font-size: 0.9rem;
    font-weight: 500;
    &::before {
      position: absolute;
      content: "";
      display: block;
      width: 100%;
      height: 0.1rem;
      background-color: rgba(var(--foreground-color), 0.5);
      z-index: -1;
    }
  }
  &__title {
    margin-top: 1rem;
  }
}
.carousel-control {
  display: flex;
  border: none;
  background: none;
  padding: 0.7rem;
  border: solid thin rgba(var(--text-color), 0.5);
  border-radius: 50%;
  cursor: pointer;
}
#projects_section {
  h2 {
    margin-bottom: 3rem;
  }
}
.project {
  display: grid;
  width: 100%;
  border-radius: 0.8rem;
  border: solid thin rgba(var(--text-color), 0.1);
  background-color: rgba(var(--foreground-color), 1);
  box-shadow: 0 0.5rem 1rem rgba(var(--text-color), 0.1);
  &__images {
    display: flex;
    gap: 1rem;
    flex-direction: column;
    flex: 1;
    overflow-x: hidden;
    padding: 1rem;
  }
  &__image {
    display: flex;
    flex: 1;
    aspect-ratio: 4/3;
    min-width: 12rem;
    height: 30vmax;
    img {
      min-height: 30vmax;
      width: 100%;
      object-fit: cover;
      border-radius: 0.5rem;
    }
  }
  &__images-wrapper {
    display: flex;
    overflow-x: auto;
    gap: 0.5rem;
  }
  .thumbnail-button {
    width: 5rem;
    aspect-ratio: 4/3;
    border-radius: 0.5rem;
    overflow: hidden;
    cursor: pointer;
    border: none;
    flex-shrink: 0;
    transition: transform 0.2s;
    &.active {
      transform: scale(0.9);
    }
  }
  .thumbnail {
    object-fit: cover;
  }
  &__content {
    padding: max(1rem, 2vw);
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1;
  }
  &__button {
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    color: rgba(var(--text-color), 1);
    background-color: rgba(var(--text-color), 0.1);
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    letter-spacing: 0.05em;
    align-self: flex-end;
    border: none;
    cursor: pointer;
  }
  .project__hidden-details {
    grid-column: 1/-1;
    padding: 1rem;
    border-top: solid thin rgba(var(--text-color), 0.5);
    overflow: hidden;
  }
}
.badge {
  background-color: rgba(var(--text-color), 1);
  color: rgba(var(--foreground-color), 1);
  padding: 0.4rem 0.5rem;
  align-self: flex-start;
  border-radius: 0.3rem;
  font-size: 0.9rem;
  font-weight: 500;
}
#poc_stats {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 1rem 0;
  padding: 1rem;
  background-color: rgba(var(--text-color), 0.06);
  border-radius: 0.5rem;
  .stat {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
    &__number {
      font-size: max(1.2rem, 1.8vmax);
      font-weight: 700;
    }
    &__title {
      font-size: 0.9rem;
    }
  }
}
#methodology_section {
  background: linear-gradient(to left, #000000a0, #000000d0),
    url("../assets/representational/irfan-simsar-wxWulfjN-G0-unsplash.jpg")
      no-repeat center center;
  background-size: cover;

  color: rgba(var(--foreground-color), 1);
  p {
    color: rgba(var(--foreground-color), 0.9);
  }
}
#methodology_wrapper {
  display: flex;
  flex-direction: column;
  margin-top: 3rem;
  .milestone {
    display: grid;
    max-width: 42rem;
    width: auto;
    gap: 1rem 2rem;
    grid-template-areas: "label title" "label description";
    align-items: center;
    padding-right: 0;
    &:not(:last-child) {
      padding-bottom: 3rem;
    }
    &__label {
      align-items: flex-start;
      justify-content: center;
      grid-area: label;
      &::before {
        width: 0.1rem;
        height: 100%;
      }
    }
    &__title {
      grid-area: title;
      margin-top: -0.1em;
    }
    &__description {
      grid-area: description;
    }
  }
}
#project_team__components {
  display: flex;
  flex-direction: column;
  .milestone {
    display: grid;
    max-width: 42rem;
    width: auto;
    gap: 1rem 2rem;
    grid-template-areas: "label title" "label description";
    align-items: center;
    padding-right: 0;
    justify-content: flex-start;
    &:not(:last-child) {
      padding-bottom: 3rem;
    }
    &__label {
      align-items: flex-start;
      justify-content: center;
      grid-area: label;
      background-color: rgba(var(--text-color), 1);
      color: rgba(var(--foreground-color), 1);
      &::before {
        width: 0.1rem;
        height: 100%;
        background-color: rgba(var(--text-color), 0.5);
      }
    }
    &__title {
      grid-area: title;
      margin-top: -0.1em;
    }
    &__description {
      grid-area: description;
    }
  }
}
#economic_framework {
  padding-top: 6rem;
  h2 {
    margin: 3rem 0 1rem 0;
  }
  ul:not(.milestones) {
    columns: 2 16rem;
    column-gap: 0.5rem;
    li {
      display: grid;
      gap: 0.5rem;
      align-items: flex-start;
      align-content: flex-start;
      background-color: rgba(var(--text-color), 0.06);
      border-radius: 0.5rem;
      padding: max(1rem, 2vw);
      page-break-inside: avoid;
      break-inside: avoid;
      margin-bottom: 0.5rem;
    }
  }
  #technologies_needed {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 3rem;
    li {
      display: flex;
      flex: 1 1 20rem;
      gap: 1rem;
      align-items: center;
      padding: max(1rem, 2vw);
      border: solid thin rgba(var(--text-color), 0.2);
      border-radius: 0.5rem;
      font-weight: 500;
      animation: slide-up 0.5s ease var(--delay) forwards;
      opacity: 0;
      background: transparent;
    }
    .icon {
      height: 2.5rem;
      width: 2.5rem;
    }
  }
  .milestones {
    display: grid;
    justify-content: flex-start;
    justify-items: flex-start;
    &--title-only {
      .milestone {
        grid-template-areas: "label title";
      }
    }
    &--description-only {
      .milestone {
        grid-template-areas: "label description";
      }
    }
  }
  .milestone {
    display: grid;
    max-width: 42rem;
    width: auto;
    gap: 1rem 2rem;
    align-items: center;
    justify-content: flex-start;
    padding-right: 0;
    &:not(:last-child) {
      padding-bottom: 3rem;
    }
    &__label {
      grid-area: label;
      align-items: flex-start;
      justify-content: center;
      background-color: rgba(var(--text-color), 1);
      color: rgba(var(--foreground-color), 1);
      &::before {
        width: 0.1rem;
        height: 100%;
        background-color: rgba(var(--text-color), 0.5);
      }
    }
    &__title {
      grid-area: title;
      margin-top: -0.1em;
    }
  }
}

#team_members {
  display: grid;
  gap: 3rem 1rem;
  margin-top: 3rem;
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
}
.team-member {
  display: grid;
  // background-color: rgba(var(--foreground-color), 1);
  border-radius: 0.5rem;
  overflow: hidden;
  cursor: pointer;
  text-align: center;
  justify-content: center;
  justify-items: center;
  img {
    object-fit: cover;
    aspect-ratio: 1/1;
    object-position: top;
    width: 100%;
    height: auto;
    border-radius: 15rem;
  }
  .flex {
    padding: 1rem;
    gap: 0.5rem;
  }
  &__name {
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.2;
  }
  &__title {
    line-height: normal;
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
  }
  &__button {
    margin-top: auto;
    padding: 0.5rem 1rem;
    align-self: center;
  }
}

#partners {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 1rem;
  margin-top: 3rem;
  .partner {
    display: flex;
    gap: 0.8rem;
    padding: 1rem;
    text-decoration: none;
    width: 100%;
    align-items: center;
    background-color: rgba(var(--text-color), 0.06);
    border-radius: 0.5rem;
    .icon {
      width: 2rem;
      height: 2rem;
    }
  }
  img {
    height: 2rem;
  }
  span {
    font-weight: 500;
    color: rgba(var(--text-color), 0.9);
    width: 100%;
  }
}

#media_coverage_section {
  .masonry {
    margin-top: 3rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    iframe {
      display: flex;
      flex: 1 1 15rem;
      border-radius: 0.5rem;
      max-width: max(100vw - 2.5rem);
    }
  }
}

#socials_section {
  background: linear-gradient(to left, #00000050, #00000080),
    url("../assets/representational/nasa-Q1p7bh3SHj8-unsplash.jpg") no-repeat
      center center fixed;
  background-size: cover;
  color: rgba(var(--foreground-color), 1);
  p {
    color: rgba(var(--foreground-color), 0.9);
  }
}
#social_links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-items: center;
  width: 100%;
  margin-top: 3rem;
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
  li {
    width: 100%;
    justify-content: center;
    box-shadow: 0 0 0 0 rgba(var(--text-color), 1);
    transition: box-shadow 0.1s ease;
    flex: 1 1 8rem;
    border-radius: 0.5rem;
    background-color: rgba(var(--foreground-color), 1);
    &:hover {
      box-shadow: 0 0 0 0.1rem rgba(var(--foreground-color), 1);
    }
  }
  a {
    display: flex;
    width: 100%;
    gap: 0.5rem;
    text-decoration: none;
    color: rgba(var(--text-color), 0.9);
    padding: 1rem;
    justify-content: center;
    border-radius: inherit;
    background-color: rgba(var(--text-color), 0.06);
    font-weight: 500;
  }
}

#services_section {
  ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 3rem;
  }
  li {
    display: flex;
    flex: 1 1 20rem;
    gap: 1rem;
    align-items: center;
    padding: max(1rem, 2vw);
    border: solid thin rgba(var(--text-color), 0.2);
    border-radius: 0.5rem;
    font-weight: 500;
    animation: slide-up 0.5s ease var(--delay) forwards;
    opacity: 0;
  }
  .icon {
    height: 2.5rem;
    width: 2.5rem;
  }
}
@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@container news-item (max-width: 400px) {
  .news-item {
    grid-template-areas: none;
    grid-template-columns: 1fr;
    &__icon {
      grid-area: unset;
    }
  }
}

#person_bio {
  margin: auto;
  border: none;
  border-radius: 0.5rem;
  padding: max(1rem, 2vw);
  box-shadow: 0 1rem 2rem rgba(var(--text-color), 0.1);
  animation: popup 0.3s forwards;
  width: min(100%, 48rem);
  button {
    padding: 0.5rem;
    background-color: rgba(var(--text-color), 0.2);
    border-radius: 5rem;
    margin-bottom: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1;
    backdrop-filter: blur(0.5rem);
  }
}
#person_bio_wrapper {
  display: grid;
  gap: 0.5rem 1.5rem;
  grid-template-columns: min(16rem, 100%) 1fr;
  grid-template-areas: "image name" "image title" "image bio";
  grid-template-rows: auto auto 1fr;
}
#person__image {
  grid-area: image;
  width: 100%;
  height: auto;
  border-radius: 0.5rem;
  object-fit: cover;
  aspect-ratio: 3/4;
}
#person__name {
  grid-area: name;
  font-size: 1.5rem;
  font-weight: 500;
}
#person__title {
  grid-area: title;
  font-size: 1rem;
  font-weight: 500;
}
#person__bio {
  grid-area: bio;
  font-size: 1rem;
  font-weight: 400;
  color: rgba(var(--text-color), 0.8);
  line-height: 1.5;
  margin-top: 1rem;
}
@keyframes popup {
  from {
    opacity: 0;
    transform: scale(1.1);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}
@media screen and (max-width: 768px) {
  #poc_images {
    .poc-wrapper {
      &:nth-of-type(5) {
        grid-area: 3/2/4/3;
      }
    }
  }
  #person_bio_wrapper {
    grid-template-columns: 1fr;
    grid-template-areas: "image" "name" "title" "bio";
  }
  #person__image {
    aspect-ratio: 1/1;
    margin-bottom: 1.5rem;
  }
  .hide-on-small {
    display: none !important;
  }
}
@media screen and (min-width: 768px) {
  body {
    --inline-padding: max(1rem, 12vw);
  }
  #bitcoin_lineart {
    opacity: 0.6;
    left: calc(100% - 50vw);
  }
  .project {
    grid-template-columns: 1fr 1fr;
  }
  #team_members {
    gap: 2rem;
    grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
  }
  .hide-on-large {
    display: none !important;
  }
}
@media screen and (any-hover: none) {
  .carousel-controls {
    display: none;
  }
}
@media screen and (any-hover: hover) {
  ::-webkit-scrollbar {
    width: 0.5rem;
    height: 0.5rem;
  }

  ::-webkit-scrollbar-thumb {
    background: rgba(var(--text-color), 0.3);
    border-radius: 1rem;

    &:hover {
      background: rgba(var(--text-color), 0.5);
    }
  }
  #main_header {
    ul {
      a:hover {
        &::after {
          width: 1rem;
        }
      }
    }
  }
  .team-member {
    transition: background-color 0.2s ease;
    &:hover {
      background-color: rgba(var(--foreground-color), 1);
    }
  }
}
.hidden {
  display: none;
}