/*
 * /everything page
 * inline chapters & lessons
 */

body {
  /* max-height: 100%; */
  overflow: hidden;
  min-height: 100vh;
  /* mobile viewport bug fix */
  min-height: -webkit-fill-available;
}

html {
  min-height: -webkit-fill-available;
}

/* set navbar to position: fixed */
.navbar {
  z-index: 100;
  position: fixed;
  inset: 0;
  bottom: 0;
}

/* everything wrapper, 2x2 responsive grid layout */
main#everything {
  display: grid;
  max-height: 100%;
  min-height: -webkit-fill-available;
  /* height: -webkit-fill-available; */
  grid-template-columns: minmax(0, max-content) 1fr;
  overflow: hidden;
  padding-top: var(--navbar-height);
}

p,
a {
  margin: var(--gap) 0;
  font-size: var(--font-size-normal);
  line-height: var(--gap-double);
  font-weight: 400;
}

code {
  font-size: var(--font-size-small);
}

h1,
h2,
h3 {
  margin: 0;
}

#everything-contents,
#everything-lessons {
  grid-column-end: span 1;
  grid-row: 1 / span 1;
  max-height: 100%;
  padding: var(--gap);
  padding-bottom: var(--gap-double);
  overflow-y: auto;
  display: flex;
  background: var(--color-background);
  flex-direction: column;
  position: relative;
}

/* table of contents on the left, scrollable */
#everything-contents {
  grid-column-start: 1;
  padding-bottom: var(--gap-quad);
  gap: var(--gap-double);
}

#everything-contents::before {
  position: fixed;
}

#everything-contents * {
  margin: 0;
}

#everything-contents .chapter {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

#everything-contents .chapter h3 {
  white-space: nowrap;
}

#everything-contents .chapter ul,
#everything-contents .chapter li {
  list-style: none;
  padding: 0;
  color: var(--color-text-secondary);
}

#everything-contents .chapter ul {
  display: flex;
  flex-direction: column;
  gap: var(--gap-half);
}

#everything-lessons {
  grid-column-start: 2;
  container-type: inline-size;
  container-name: lessons-list;
  padding-top: 0;
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
  scroll-padding-block-start: calc(2 * var(--navbar-height));
}

#everything-lessons .chapter-title {
  margin: 0;
  padding-top: var(--gap);
  color: var(--color-text-accent);
  position: sticky;
  height: var(--gap-triple);
  top: 0;
  background: var(--color-background);
  z-index: 3;
}

#everything-lessons .chapter-title:first-child {
  margin-top: 0;
}

#everything-lessons .lesson {
  margin: var(--gap) 0;
  padding: var(--gap) 0;
  padding-bottom: var(--gap-triple);
  scroll-snap-align: center top;
}

#everything-lessons .lesson-title {
  position: sticky;
  top: var(--gap-triple);
  background: var(--color-background);
  color: var(--color-link);
  z-index: 2;
  padding: var(--gap) 0;
  margin-bottom: var(--gap-double);
}

#everything-lessons .lesson:target {
  animation: highlight-block 900ms ease-in-out 300ms 1;
}

#everything-lessons .lesson:target .lesson-title {
  animation: highlight-text 900ms ease-in-out 300ms 1;
}

#everything-lessons .lesson-snippet {
  padding: var(--gap);
  margin-right: var(--gap);
  margin-top: var(--gap-double);
  position: relative;
  background: var(--code-background);
  box-shadow: var(--drop-shadow);
}

#everything-lessons .lesson-snippet code {
  overflow-x: auto;
  display: inline-block;
  width: 100%;
  padding: var(--gap);
  padding-bottom: var(--gap-double);
}

#everything-lessons .lesson-snippet-link {
  background: var(--color-accent-muted);
  margin: 0;
  position: absolute;
  bottom: 0;
  right: 0;
  padding: var(--gap-half) var(--gap);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap);
  font-size: var(--font-size-small);
  color: var(--color-link);
  border-radius: none;
  text-decoration: none;
  outline: 1px solid transparent;
  outline-offset: -1px;
  cursor: pointer;
}

#everything-lessons hr {
  width: 100%;
  height: 1px;
  border: 0;
  padding: 0;
  margin: 0;
  display: block;
}

#everything-lessons .lesson-separator {
  border-top: 1px solid var(--color-accent-muted);
}

#everything-lessons .chapter-separator {
  border-top: 1px solid var(--color-accent);
  position: sticky;
  top: calc(var(--gap-triple) - 1px);
  z-index: 3;
}

@media only screen and (min-width: 1100px) {
  #everything {
    grid-template-columns: minmax(min-content, max-content) 1fr;
  }

  #everything-contents {
    padding: var(--gap) var(--gap-double) var(--gap-quad) var(--gap);
  }

  #everything-contents .chapter ul {
    padding-left: var(--gap);
  }
}

/* transform contents as to a side menu  */
@media only screen and (max-width: 768px) {
  #everything-contents {
    display: none;
  }

  .theme-light #everything-contents::after {
    filter: contrast(1);
  }

  #everything-lessons {
    grid-column: 1 / span 2;
    padding-bottom: var(--gap-quad);
    padding-left: 0;
    padding-right: 0;
  }

  #everything-lessons .lesson,
  #everything-lessons .chapter-title,
  #everything-lessons .chapter-separator {
    padding-left: var(--gap);
    padding-right: var(--gap);
  }

  #everything-lessons .lesson-snippet code {
    padding: var(--gap);
  }
}

@container lessons-list (min-width: 900px) {

  #everything-lessons .lesson,
  #everything-lessons .chapter-title {
    padding-right: var(--gap-quad);
    padding-left: var(--gap-quad);
  }

  #everything-lessons .chapter-separator {
    margin-left: var(--gap-quad);
    margin-right: var(--gap-quad);
    width: calc(100% - var(--gap-quad) * 2);
  }
}

@keyframes highlight-text {
  0% {
    text-decoration: underline;
    text-decoration-color: transparent;
  }

  50% {
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    color: var(--color-accent-text);
    background: var(--color-accent-muted);
  }

  100% {
    text-decoration: underline;
    text-decoration-color: transparent;
  }
}

@keyframes highlight-block {
  0% {}

  50% {
    background: var(--color-accent-muted);
  }

  100% {}
}

@keyframes reveal {
  0% {
    overflow: unset;
  }

  99% {
    overflow: unset;
  }

  100% {
    overflow-y: auto;
  }
}

@media print {
  #everything-contents {
    display: none !important;
  }

  .navbar {
    position: unset;
  }

  main#everything {
    max-height: unset;
    overflow: visible;
  }

  #everything-lessons {
    max-height: unset !important;

    h3.chapter-title:not(:first-child) {
      page-break-before: always;
    }

    article.lesson:not(hr.chapter-separator + article.lesson) {
      page-break-inside: avoid;
    }

  }
}