:root {
  --bar-height: 40px;
  --main-color: #ffffff;
  --second-color: #c5cbe3;
  --font-second-color: #9297ad;
}

body {
  font-family: "Arial", serif;
  font-size: 16px;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--main-color);
}

h1,
h2 {
  color: var(--font-second-color);
}

ul {
  padding: 0 !important;
  margin: 0 !important;
}

li {
  list-style-type: none !important;
}

a {
  text-decoration: none !important;
  color: var(--font-second-color);
}

.nav {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--second-color);
  display: flex;
  justify-content: space-between;
  container-type: inline-size;
  container-name: navigation;
}

.nav__bar {
  display: flex;
  align-items: center;
  color: var(--font-second-color);
  margin-left: 20px;
  font-weight: 700;
}

.bar__icon {
  display: none;
}

.contents {
  height: var(--bar-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-right: 20px !important;
}

.contents__item {
  background-color: var(--second-color);
  margin-left: 10px;
  font-weight: 700;
}

.contents-item__link {
  color: var(--font-second-color) !important;
}

@container navigation (width <= 930px) {
  .nav__bar {
    height: var(--bar-height);
    margin-left: 20px !important;
  }

  .bar__icon {
    display: block;
    margin-right: 10px;
  }

  .nav__contents {
    display: none;
  }

  nav:hover .nav__contents {
    display: block;
  }

  nav:hover .nav__bar {
    display: none !important;
  }
}

@media only screen and (width <= 830px) {
  .contents {
    display: block;
    height: auto;
    margin: 20px !important;
    margin-bottom: 10px !important;
  }

  .contents__item {
    margin: 0 0 10px 0;
  }

  .nav__bar {
    height: var(--bar-height);
    margin-left: 20px !important;
  }

  .bar__icon {
    display: block;
    margin-right: 10px;
  }

  .nav__contents {
    display: none;
  }

  nav:hover .nav__contents {
    display: block;
  }

  nav:hover .nav__bar {
    display: none !important;
  }
}

main {
  width: calc(100% - 80px);
  margin: 0 40px 40px;
}

.header {
  display: flex;
  flex-direction: row;
  align-items: center;
  margin-top: 80px;
  gap: 20px;
}

.header-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.header-info__title,
.header-info__description {
  margin: unset;
}

.header__photo {
  border-radius: 50%;
  width: 10em;
  height: 10em;
}

@media only screen and (width <= 830px) {
  .header {
    flex-direction: column;
  }
}

.section__title {
  background-color: var(--second-color);
  padding: 4px;
}

.section {
  margin-bottom: 40px;
  scroll-margin-top: 40px;
}

.code-container {
  background: #d3d3d3;
  border-radius: 8px;
  overflow: auto;
  padding: 20px;
}

.code {
  font-family: monospace;
  white-space: pre;
}

.project,
.institution,
.course {
  display: flex;
  align-items: flex-start;
}

.project {
  flex-direction: row;
}

.experience {
  container-type: inline-size;
  container-name: project;
}

.institution,
.course {
  flex-direction: column;
}

.project__main {
  width: 40%;
  height: min-content;
}

.project__assets {
  display: flex;
  justify-content: center;
  width: calc(60% - 20px);
  margin-left: 20px;
}

.project__assets img {
  height: 100%;
  max-height: 500px;
  max-width: 100%;
}

@media only screen and (width <= 830px) {
  .project {
    flex-direction: column;
  }

  .project__main,
  .institution__title,
  .course__title {
    width: 100%;
    height: min-content;
  }

  .project__assets,
  .institution__description,
  .course__description {
    width: 100%;
    margin-left: 0;
  }
}

@container project (width <= 630px) {
  .project {
    flex-direction: column;
  }

  .project__main {
    width: 100%;
    height: min-content;
  }

  .project__assets {
    width: 100%;
    margin-left: 0;
  }
}

.languages {
  display: flex;
  flex-flow: row wrap;
}

.language {
  margin-right: 40px;
  margin-bottom: 20px;
}

div.language:last-child {
  margin-right: 0;
  margin-bottom: 0;
}

.footer {
  display: flex;
  align-items: center;
  flex-direction: row;
  justify-content: space-around;
  background-color: var(--second-color);
  color: var(--font-second-color);
  width: 100%;
  height: 60px;
  font-weight: 700;
}

.footer__rsschool a img,
.footer__github a img {
  height: 40px;
}

@media only screen and (width > 830px) {
  main {
    display: grid;
    grid-template-columns: calc(35% - 20px) calc(65% - 20px);
    column-gap: 40px;
  }

  #contacts {
    grid-column: 1 / 2;
  }

  #about-me {
    grid-column: 2 / 3;
  }

  #skills {
    grid-column: 1 / 2;
  }

  #experience {
    grid-column: 2 / 3;
    grid-row: 2 / 7;
  }

  #code-example {
    grid-column: 2 / 3;
    grid-row: 7 / 8;
  }

  #education {
    grid-column: 1 / 2;
    grid-row: 3 / 4;
  }

  #certifications {
    grid-column: 1 / 2;
    grid-row: 4 / 5;
  }

  #languages {
    grid-column: 1 / 2;
    grid-row: 5 / 6;
  }

}