html,
body {
  height: 100%;
}

:root {
  --header-height: 60px;
}

html {
  scroll-padding-top: calc(var(--header-height) + 20px);
}

@view-transition {
  navigation: auto;
  types: slide, forwards;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", sans-serif, "system-ui", "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";

  position: relative;

  display: flex;
  flex-direction: column;
  font-size: 14px;
  padding-top: var(--header-height);
  align-items: stretch;
  background-color: var(--color-default-bg);
  color: var(--color-default);
}

* {
  box-sizing: border-box;
}

h1 {
  font-size: 5rem;
  font-weight: 600;
  color: var(--color-h1);
}

h2 {

  font-size: 3rem;
  margin: 1rem 0px 0.6rem;
  color: var(--color-h2);
}

h3 {

  font-size: 1.8rem;
  margin: 2rem 0px 0.6rem;
  color: var(--color-h3);
}

h4 {
  font-size: 1.2rem;
  color: var(--color-h4);
}

p {
  font-size: var(--font-size-normal);
  font-size: 1.36rem;
  line-height: 2.2rem;
  margin-bottom: 3rem;
}

code {
  font-family: monospace;
}

header.site-head {
  display: flex;
  z-index: 5;
  height: var(--header-height);
  align-items: center;
  background-color: var(--color-header-bg);
  backdrop-filter: blur(10px);
  padding: var(--padding);
  font-size: 16px;
  position: fixed;
  top: 0;
  width: 100%;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);

  & a,
  theme-toggle {
    text-decoration: none;
    padding: 0 .75rem;
    color: var(--color-nav-anchor);

    &.active,
    &:hover {
      color: var(--color-anchor-active);
    }
  }

  #left {
    display: flex;
    align-items: center;
    flex: 1;

    a.title {
      font-weight: 600;
    }
  }

  #right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
  }

  #hamburger {
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    display: none;

    svg {
      display: block;
      stroke: var(--color-heavy);

      &:hover {
        stroke: var(--color-accent);
      }
    }
  }
}

#style-mode {
  cursor: pointer;
}

#container {
  display: flex;
}

main {
  flex: 1;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  max-width: 100%;

  &#page {
    overflow-y: scroll;
    /* margin-top: calc(-1 * var(--header-height)); */

    article#page-article {
      /* margin-top: calc(1 * var(--header-height)); */
    }

    #article-bottom {
      min-height: calc(4 * var(--padding));
    }
  }
}

a {
  color: var(--color-anchor);
  cursor: pointer;

  &.active {
    color: var(--color-anchor-active);
  }

  &:hover {
    color: var(--color-anchor-active);
  }
}

nav#left-nav {
  --nav-padding: calc(var(--padding) * 2);
  border-right: 1px solid var(--color-nav-border-color);
  padding: .5rem;
  width: 300px;
  position: sticky;
  /* top: calc(var(--header-height)); */
  top: 0;
  /* top: 150px; */
  /* max-height: 150px; */
  max-height: calc(100vh - var(--header-height) - var(--nav-padding));
  overflow-y: scroll;
  background: var(--color-nav-bg);
  margin-left: calc(var(--padding) * -2);
  --transition-duration: 0.2s;

  & .label {
    color: var(--color-nav-anchor);
    line-height: 1.25;
    padding: 0.5rem .75rem;
    border-radius: 0.25rem;
    font-size: 16px;
    font-weight: 400;
    display: block;
    flex: 1;

  }

  & a {

    &:hover,
    &.active {
      background-color: var(--color-anchor-active-bg);
    }
  }

  li {
    margin-left: calc(var(--padding) * 2);
    margin-bottom: calc(var(--padding) * 0.5);
    overflow-y: hidden;
    transition-duration: var(--transition-duration);
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-duration) ease-out;

    .inner {
      overflow: hidden;
      min-height: 36px;
    }

    &.open {
      grid-template-rows: 1fr;

      &>.inner>.menu-list>button.toggle {
        &:before {
          transform: rotate(180deg);
        }
      }
    }

    button.toggle {
      &:before {
        transform: rotate(90deg);
      }
    }

    div.menu-list {
      display: flex;
      align-items: center;
      flex: 1;
      border-radius: calc(var(--border-radius) / 2);

      /* &:hover,
      &.active {
        background-color: var(--color-anchor-active-bg);
      } */

      button.toggle {
        padding: calc(var(--padding) * 1);
      }
    }

  }

}

button.toggle {
  display: flex;
  padding: calc(var(--padding) * 0.5);
  border-radius: .25rem;
  transition-duration: var(--transition-duration);
  background: none;
  border: none;
  /* --sublist-icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16px" height="16px" viewBox="0 0 24 24"><path fill="rgba(0,0,0,0.5)" d="M7.41 15.41L12 10.83l4.59 4.58L18 14l-6-6-6 6z"></path></svg>'); */
  --sublist-icon: url('data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2216px%22%20height%3D%2216px%22%20viewBox%3D%220%200%2024%2024%22%3E%3Cpath%20fill%3D%22rgba(0%2C0%2C0%2C0.5)%22%20d%3D%22M7.41%2015.41L12%2010.83l4.59%204.58L18%2014l-6-6-6%206z%22%2F%3E%3C%2Fsvg%3E');

  --filter: invert(0%) sepia(94%) saturate(17%) hue-rotate(223deg) brightness(104%) contrast(98%);
  cursor: pointer;

  &:hover {
    background-color: var(--color-anchor-active-bg);
  }

  &:before {
    background: var(--sublist-icon) 50% / 2rem 2rem;
    content: "";
    height: 1.25rem;
    transition-duration: var(--transition-duration);
    width: 1.25rem;
    filter: var(--filter);
  }
}


code-editor {
  container-type: inline-size;
}

aside#toc-desktop {
  --aside-padding: calc(var(--padding) * 2);
  border-left: 1px solid var(--color-nav-border-color);
  margin: var(--aside-padding);
  margin-left: 0;
  font-size: 14px;
  max-height: 80vh;
  /* max-height: calc(100vh - var(--header-height) - var(--nav-padding)); */
  position: sticky;
  overflow-y: scroll;
  /* top: calc(var(--header-height) + var(--aside-padding)); */
  top: 0;

  li {
    padding: 0 var(--aside-padding);
    line-height: 1.8rem;

    &.indent-3 {
      padding-left: calc(var(--aside-padding) * 2);
    }

    &.indent-4 {
      padding-left: calc(var(--aside-padding) * 4);
    }

    &.indent-5 {
      padding-left: calc(var(--aside-padding) * 6);
    }
  }

}

aside#toc-mobile {
  --transition-duration: 0.2s;
  font-size: 16px;
  border-radius: var(--border-radius);
  background-color: var(--color-anchor-active-bg);
  display: none;
  transition-duration: var(--transition-duration);
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-duration) ease-out;

  ol,
  li {
    list-style: none;
  }

  ol {
    padding: 0;
    margin: 0;
  }

  /* li {
    margin-left: calc(var(--padding) * 2);
  } */

  .inner {
    overflow: hidden;
    min-height: 36px;

    padding-bottom: var(--padding);
  }

  button {
    &:before {
      transform: rotate(180deg);
    }
  }

  &.open {
    grid-template-rows: 1fr;

    button {
      &:before {
        transform: rotate(0deg);
      }
    }
  }

  label {
    cursor: pointer;
    font-size: 18px;
    padding: calc(var(--padding) * 0.5) calc(var(--padding) * 1) calc(var(--padding) * 0.5) calc(var(--padding) * 2);
    border-bottom: 1px solid var(--color-nav-border-color);
    margin-bottom: var(--padding);
    width: 100%;
    display: flex;
    align-items: center;

    span {
      flex: 1;
      opacity: 0.8;
    }
  }

  a {
    color: var(--color-default);

    &:hover,
    &.active {
      text-decoration: none;
      color: var(--color-anchor-active);
    }
  }

  --aside-padding: calc(var(--padding) * 2);

  li {
    padding: 0 var(--aside-padding);
    line-height: 1.8rem;
  }
}

article {
  flex: 1;

  font-size: var(--font-size-normal);
  min-width: var(--min-width);
  /* max-width: var(--max-width); */
  max-width: 800px;
  /* overflow: hidden; */
  margin: 0px auto;
  padding: calc(var(--padding)* 2) calc(var(--padding)* 4) calc(var(--padding)* 4) calc(var(--padding)* 4);
  /* text-align: justify; */

  #content {
    min-height: calc(100% - 130px);
    padding-bottom: calc(var(--padding) * 4);
    /* border-bottom: 1px solid var(--color-nav-border-color); */
  }

  code-editor {
    margin-top: calc(var(--padding) * 2);
    margin-bottom: calc(var(--padding) * 4);
    display: block;
  }

  code-editor+small {
    margin-top: -40px;
  }

  .markdown-body {
    background-color: var(--color-page-bg);
    color: var(--color-default);
    font-family: "Crimson Text", "Work Sans", "Open Sans", sans-serif;
    font-size: 24px;

    p {
      color: rgba(0, 0, 30, 0.8);
    }

    a {
      cursor: pointer;
      color: var(--color-anchor-active);
    }

    h1,
    h2,
    h3,
    h4 {
      font-family: "League Spartan", "Roboto", sans-serif;
    }

    h1 {
      font-size: 6rem;
      margin-bottom: 2rem;
      margin-top: 1rem;
      border: none;
      font-weight: 400;
      font-family: "Crimson Text", "Work Sans", "Open Sans", sans-serif;
      font-weight: 300;
      font-size: 5.6rem;
    }

    .h2 {
      margin-top: 5.25rem;
      padding-bottom: 0;
      margin-bottom: 2rem;

      h2 {
        font-size: 3.4rem;
        border: none;
        font-weight: 300;
        padding: 0;
        margin: 0;
      }
    }

    h1+.h2 h2 {
      margin-top: 0;
    }

    p {
      /* font-size: 1.2rem;
      line-height: 1.8rem; */
      /* margin-bottom: 1.6rem; */
      letter-spacing: 0;
      line-height: 36px;
      margin-block-start: 1rem;
      margin-block-end: 1.5rem;
    }

    pre {
      margin-top: 3rem;
      margin-bottom: 3rem;
    }

    ul {
      margin: 2rem 0;

      li {
        list-style: disc;
        font-size: 24px;
        line-height: 36px;
        /* line-height: 1.8rem; */
      }
    }
  }
}


em {
  font-style: italic;
}

pre.code-editor {
  padding: 0;
  margin: 0;
  font-size: 100%;
  line-height: inherit;
  border-radius: 0;
  background-color: transparent;
  border: 1px solid black;
  display: flex;
  flex-direction: column;

  code-editor {
    margin: 0;
    padding: 0;
  }

  code-editor:host {
    margin: 0;
    padding: 0;
  }
}

small {
  opacity: 0.6;
}

@keyframes changeColor {
  0% {
    color: var(--color-anchor);
  }

  40% {
    color: var(--color-anchor-active-midway);
  }

  100% {
    color: var(--color-anchor-active);
  }
}


.markdown-body {
  .heading-wrapper {
    display: flex;
    align-items: center;

    h2+a.anchor {
      font-size: 3rem;
    }

    h3+a.anchor {
      font-size: 2rem;
    }

    h4+a.anchor {
      font-size: 1rem;
    }

    &:hover {

      a.anchor {
        float: none;
        margin-left: 0;

        span {
          display: block !important;
          /* color: var(--color-default); */
          opacity: 0.3;
          margin-left: calc(var(--padding) * 2);
        }
      }
    }
  }

}

a.button {
  padding: 1rem;
  border: 1px solid var(--color-nav-border-color);
  border-radius: var(--border-radius);
  transition-duration: 0.2s;

  &:hover,
  &:active {
    text-decoration: none;
    border-color: var(--color-button-border-active);
    transition-duration: 0.1s;
  }

  &:hover {
    background-color: var(--color-button-background-hover);
  }

  &:active {
    background-color: var(--color-button-background-active);
  }

  label {
    color: var(--color-default);
    opacity: 0.8;
    display: block;
    font-size: 0.875rem;
  }

  &.left {
    float: left;
  }

  &.right {
    float: right;
  }
}

#pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  width: 100%;
  margin-top: calc(var(--padding) * 4);

  a {
    display: block;

    &:hover {
      background-color: inherit;
    }
  }

  .left {
    a {
      span {
        &:before {
          content: "« ";
        }
      }
    }
  }

  .right {
    a {
      text-align: right;

      span {
        &:after {
          content: " »";
        }
      }
    }
  }
}

#home-buttons {
  display: flex;
  gap: calc(var(--padding) * 6);
  margin-top: calc(var(--padding) * 8);
  justify-content: center;

  a {
    padding: calc(var(--padding) * 2) calc(var(--padding) * 4);
    /* border: none; */
    font-size: 1.4rem;
    color: var(--color-home-buttons);

    background-color: #eeeeee;
    transition-duration: 0.2s;

    &:hover {
      transform: scale(1.02);
      box-shadow: 0 3px 3px rgba(0, 0, 0, 0.1);
    }

    &:first-child {
      &:hover {
        /* color: var(--color-anchor-active); */
      }
    }

    &:last-child {
      background-color: var(--color-anchor-active);

      &:hover {
        /* color: white; */
        background-color: var(--color-anchor-active-heavy);
      }
    }
  }
}

#shameless-marketing {
  display: none;
  font-size: 13px;
  opacity: 0.8;

  a {
    padding: 0;
    margin: 0;
  }
}

#hamburger-menu {
  display: none;
  z-index: 100;
  position: absolute;
  top: 0;
  left: 0;
  height: 100vh;
  width: 100vw;
  transition-duration: 0.2s;
  transform: translate3d(-100%, 0, 0);
  opacity: 0;
  transition-property: opacity, visibility, transform;

  &.open {
    transform: translateZ(0);
    opacity: 1;
  }

  main {
    display: flex;

    section {
      display: flex;
      flex-direction: column;
      padding: calc(var(--padding) * 1);
    }

    hr {
      border: none;
      background: none;
      border-bottom: 1px solid var(--color-nav-border-color);
      margin: calc(var(--padding) * 2) 0;
    }

    a {
      font-size: 16px;
      line-height: 2.25;
      color: var(--color-nav-anchor);
      line-height: 1.25;
      padding: 0.5rem .75rem;
      border-radius: 0.25rem;
      font-size: 16px;
      font-weight: 400;
      display: block;

      &.active {
        color: var(--color-anchor-active);
      }

      &:hover {
        color: var(--color-anchor-active);
      }

    }
  }

  header {
    padding: calc(var(--padding) * 2) calc(var(--padding) * 2) calc(var(--padding) * 2) calc(var(--padding) * 1);
    font-size: 16px;
    display: flex;
    align-items: center;

    #left {
      flex: 1;
      display: flex;
      align-items: center;
    }

    & a,
    theme-toggle {
      text-decoration: none;
      padding: 0 calc(var(--padding) * 0.5);
      color: var(--color-heavy);

      &:first-child {
        padding-left: .75rem;
      }
    }
  }

  #hamburger-contents {
    width: 83vw;
    height: 100%;
    background-color: var(--color-default-bg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;

    a {
      border-radius: calc(var(--border-radius) / 2);

      &:hover,
      &.active {
        background-color: var(--color-anchor-active-bg);
      }
    }

    .menu-list {
      border-radius: calc(var(--border-radius) / 2);
      margin-bottom: calc(var(--padding) * 0.5);

      a {
        padding: calc(var(--padding) * 1) .75rem;
      }

      &:hover,
      &.active {
        background-color: var(--color-anchor-active-bg);
      }
    }


    main {
      position: relative;
      transition-duration: 0.2s;

      &.main-menu {
        transform: translateX(100%);
      }

      section {
        position: absolute;
        top: 0;
        width: 100%;

        &:last-child {
          left: -100%;
        }

        &:first-child {
          left: 0%;
        }
      }
    }
  }
}

#hamburger-menu-overlay {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: rgba(0, 0, 0, 0.4);
}

#close-hamburger {
  float: right;
  cursor: pointer;

  svg {
    stroke: var(--color-heavy);

    &:hover {
      stroke: var(--color-accent);
    }
  }
}

@media only screen and (max-width: 996px) {
  aside#toc-mobile {
    display: grid;
  }

  #home {
    h1 {
      font-size: 5rem;
    }

    h2 {
      font-size: 2.8rem;
      line-height: normal;
      margin-top: 0;
    }
  }

  #hamburger-menu {
    display: block;
  }

  header.site-head {

    #left>*,
    #right>* {
      display: none;
    }

    #left>*.mobile,
    #right>*.mobile {
      display: block;

    }
  }

  main {
    aside#toc-desktop {
      display: none;
    }

    nav#left-nav {
      display: none;
    }

    article {
      max-width: none;
      min-width: 368px;
    }
  }
}

#back-to-main-menu {
  background-color: var(--color-anchor-active-bg);
  padding: calc(var(--padding) * 1) calc(var(--padding) * 2);
  width: calc(100% + calc(var(--padding) * 2));
  margin-left: calc(var(--padding) * -1);
  margin-bottom: calc(var(--padding) * 1);
  cursor: pointer;

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

.markdown-body p code {
  color: var(--color-inline-code);
}

[data-theme='dark'] {
  button.toggle {
    --filter: invert(100%) sepia(94%) saturate(17%) hue-rotate(223deg) brightness(104%) contrast(98%);
  }
}