index.css

:root {
  color-scheme: light dark;
  font-family:
    "Noto Sans Display",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    "Open Sans",
    "Helvetica Neue",
    sans-serif;
  font-synthesis: none;
  font-weight: 400;
  line-height: normal;
  color-scheme: light dark;

  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;

  --color-primary: #dfd3fd;
  --color-text: #000000;
  --background-color: #ffffff;
  --color-secondary: #fbf7fd;
  --color-accent: #183569;
  --color-box-shadow: rgba(223, 211, 253, 0.75);
  --box-shadow: 4px 8px 8px var(--color-box-shadow);
  --box-shadow-menu: 0px 0px 16px var(--color-box-shadow);
  --color-anchor: #356aaf;
}

:root.dark-mode {
  --color-primary: #494eb7;
  --color-text: #ffffff;
  --background-color: #121212;
  --color-secondary: #242337;
  --color-accent: #68b2ff;
  --color-box-shadow: rgba(73, 78, 183, 0.75);
  --color-anchor: #9bffff;
}

html {
  color: var(--color-text);
  background-color: var(--background-color);
}

body {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Inter Tight";
}

a {
  text-decoration: none;
}

a,
a:visited {
  color: var(--color-anchor);
}

a:hover {
  text-decoration: underline;
}

.article .content__aside img,
.banner__art img {
  width: 100%;
  height: auto;
}

.header,
.footer {
  display: flex;
  justify-content: center;
  background-color: var(--color-primary);
}

.header .header__content {
  display: flex;
  align-items: center;
  max-width: 1600px;
  width: 100%;
  padding: 16px;
}

.header__content>.content__title {
  line-height: 0.8em;
  margin: 0 auto 0 4px;
}

.toggle-theme {
  position: relative;
}

.toggle-theme__button {
  border: none;
  background-color: transparent;
  padding: 8px;
  width: 45px;
  height: 45px;
  border-radius: 100px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border: solid 2px var(--color-secondary);
  transition: 0.2s;
}

.toggle-theme__button.active {
  background-color: var(--color-secondary);
}

.toggle-theme__button:hover {
  background-color: var(--color-secondary);
}

.toggle-theme__button .icon {
  width: 30px;
  display: none;
}

.toggle-theme__button .icon.active {
  display: block;
}

.toggle-theme__menu {
  display: none;
  background-color: var(--color-secondary);
  border-radius: 8px;
  margin: 0;
  padding: 0;
  position: absolute;
  right: 0;
  top: 50px;
  width: 160px;
  box-shadow: var(--box-shadow-menu);
  overflow: hidden;
  z-index: 2;
}

.toggle-theme__menu.active {
  display: block;
}

.toggle-theme__menu .menu__item {
  list-style-type: none;
}

.toggle-theme__menu .menu__item .item__button {
  display: block;
  padding: 12px 12px;
  width: 100%;
  border: none;
  background-color: transparent;
  text-align: left;
  font-size: 1rem;
  color: var(--color-text);
}

.toggle-theme__menu .menu__item .item__button:hover {
  cursor: pointer;
  background-color: var(--color-primary);
}

.toggle-theme__menu .menu__item .item__button.active:after {
  content: "\2713";
  padding-left: 4px;
  font-size: 0.825rem;
}

.footer .footer__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 1600px;
  width: 100%;
  padding: 16px;
}

.footer__nav .nav__list {
  margin: 16px 0 0 0;
  padding: 0;
}

.footer__nav .nav__list .list__item {
  list-style-type: none;
  display: inline-block;
  padding: 0 8px;
}

.main {
  display: flex;
  justify-content: center;
}

.main .main__container {
  max-width: 1600px;
  width: 100%;
  padding: 32px;
}

.main__content .content__banner {
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-rows: fit-content auto auto;
  border-radius: 16px;
  column-gap: 16px;
  box-shadow: var(--box-shadow);
  background-color: var(--color-secondary);
  padding: 16px;
}

.content__banner .banner__art {
  grid-column-start: 1;
  grid-row-start: 2;
  padding: 16px;
}

.content__banner .banner__title {
  grid-column-start: 1;
  grid-row-start: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  text-align: center;
  font-family: "Inter Tight";
}

.content__banner .banner__tagline {
  font-size: 1rem;
}

.article {
  border-radius: 16px;
  background-color: var(--color-secondary);
  box-shadow: var(--box-shadow);
  padding: 16px;
  margin-top: 32px;
}

.article__title {
  text-align: center;
}

.introduction>h2 {
  text-align: center;
}

.article .content__aside {
  display: flex;
  justify-content: center;
}

.article aside figure {
  max-width: 185px;
  outline: solid 2px var(--color-accent);
  padding: 8px;
  border-radius: 8px;
}

.article aside figure figcaption {
  font-size: 0.75rem;
}

.author__info {
  display: flex;
  justify-content: center;
}

.author__info__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0;
  outline: solid 2px var(--color-accent);
  border-radius: 8px;
  max-width: 200px;
  min-width: 200px;
  width: 100%;
  background: linear-gradient(var(--color-accent) 0%,
      var(--color-primary) 30%,
      transparent 55%);
}

.author__avatar {
  width: 125px;
  height: 125px;
  border-radius: 100%;
  overflow: hidden;
}

.bio__list {
  margin: 0 8px;
  padding: 0;
}

.bio__list .list__item {
  list-style-type: none;
  display: flex;
  align-items: center;
}

.bio__list .list__item>.icon {
  width: 20px;
  margin-right: 6px;
  align-self: flex-start;
}

.bio__list .list__item.interests>ul {
  padding-left: 0;
}

.bio__list .list__item.interests>ul li {
  list-style-type: none;
}

.bio__list .list__item.interests>ul li::before {
  content: "- ";
}

.icon {
  fill: var(--color-text);
}

.footer__nav .list__item .icon {
  width: 30px;
}

.table-of-content {
  position: fixed;
  top: 119px;
  right: 0;
  display: flex;
  min-height: 114px;
}

.table-of-content__nav {
  background-color: var(--color-secondary);
  border-radius: 8px 0 0 8px;
  box-shadow: var(--box-shadow-menu);
  display: none;
}

.table-of-content__nav.active {
  display: initial;
}

.table-of-content__nav .nav__list {
  margin: 0;
  padding: 0;
}

.table-of-content__nav .nav__list .list__item {
  list-style-type: none;
  padding: 8px 12px;
}

.table-of-content__button {
  border: none;
  background-color: var(--color-secondary);
  height: fit-content;
  align-self: center;
  padding: 8px 6px 8px 12px;
  border-radius: 40px 0 0 40px;
  box-shadow: -6px 0 8px var(--color-box-shadow);
  z-index: 1;
  cursor: pointer;
}

.table-of-content__button .icon {
  width: 24px;
  display: none;
}

.table-of-content__button .icon.active {
  display: block;
}

@media screen and (min-width: 768px) {
  .content__banner .banner__tagline {
    text-align: center;
    font-size: 1.3rem;
  }

  .content__banner .banner__title {
    font-size: 3rem;
  }

  .article aside figure {
    max-width: 250px;
  }

  .author__avatar {
    width: 150px;
    height: 150px;
  }
}

@media screen and (min-width: 900px) {
  .article {
    padding: 16px 32px 32px 32px;
  }

  .article__content {
    display: flex;
  }

  .article .content__aside {
    min-width: 354px;
    max-width: 354px;
    display: initial;
    align-self: start;
  }

  .article aside figure {
    max-width: 354px;
  }

  .article.character aside {
    order: 0;
  }

  .article.character .content__text {
    order: 1;
  }

  .author__info__content {
    max-width: 274px;
    min-width: 274px;
    margin: 16px 40px;
  }
}

@media screen and (min-width: 1025px) {
  .main__content .content__banner {
    grid-template-columns: 700px auto;
    grid-auto-rows: 700px auto;
  }

  .content__banner .banner__art {
    grid-column-start: 1;
    grid-row-start: 1;
  }

  .content__banner .banner__title {
    grid-column-start: 2;
    grid-row-start: 1;
    font-size: 4rem;
  }

  .content__banner .banner__tagline {
    grid-column-start: span 2;
    grid-row-start: 2;
  }
}

@media screen and (min-width: 1600px) {
  .main .main__container {
    display: flex;
    column-gap: 32px;
  }

  .table-of-content {
    position: sticky;
    top: 16px;
    height: fit-content;
  }

  .table-of-content__nav {
    display: initial;
    box-shadow: var(--box-shadow);
    border-radius: 8px;
  }

  .table-of-content__button {
    display: none;
  }

  .table-of-content__nav .nav__list .list__item a {
    font-size: 1.125rem;
  }
}