@import 'variables.css';
@import 'reset.css';

/* #region html and body */
html {
  scroll-padding-top: calc(var(--height-header) + 1rem);
}
html.is_dark img {
  opacity: var(--opacity);
  transition: opacity var(--transition-duration);
}
html.is_dark img:hover {
  opacity: 1;
}
/* #endregion */

/* #region Common */
.nav_link,
.nav_link_container a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.nav_link:hover,
.nav_link_container a:hover {
  color: var(--color-text);
  text-decoration: none;
}
.nav_link.active,
.nav_link_container a.active {
  color: var(--color-primary);
}

.popover {
  position: absolute;
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow);
  padding: 1rem;
  z-index: var(--z-index-popover);
}

.flex_center {
  display: flex;
  align-items: center;
}
[class^='czs-'] {
  display: inline-block;
  background-position: center center;
  background-repeat: no-repeat;
  width: 2rem;
  height: 2rem;
  background-size: 20px;
}

.list_style_none {
  list-style: none;
  margin: 0;
  padding: 0;
  line-height: var(--line-height);
}
.list_style_none li {
  margin: 0;
}
/* #endregion */

/* #region Header */
header {
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: var(--height-header);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--box-shadow);
  background-color: var(--color-background);
  z-index: var(--z-index-header);
}
header h1 {
  margin: 0;
}
header h1 a {
  display: block;
  width: var(--width-sidebar);
  padding-left: 2rem;
  font-size: 20px;
  line-height: var(--height-header);
  color: var(--color-text);
}
header h1 a:hover {
  text-decoration: none;
}
header nav {
  flex-grow: 1;
}
header ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}
header li {
  margin: 0.5rem 0 0.5rem 1rem;
}
header li:last-child {
  margin-right: 1.5rem;
}
header li a {
  padding: 0 1rem;
  line-height: 2rem;
  display: block;
  color: var(--color-text);
}
header li a:hover {
  color: var(--color-primary);
  text-decoration: none;
}
header select {
  background: transparent;
  color: var(--color-text);
  font-size: var(--font-size);
  border: 0;
  height: 2rem;
}

.toggle_dark {
  cursor: pointer;
}
.toggle_dark [class^='czs-moon'] {
  margin-left: -0.75rem;
}
.toggle_dark .czs-sun-l,
.toggle_dark .czs-moon {
  display: none;
}
.is_dark .toggle_dark .czs-sun-l,
.is_dark .toggle_dark .czs-moon {
  display: inline-block;
}
.is_dark .toggle_dark .czs-sun,
.is_dark .toggle_dark .czs-moon-l {
  display: none;
}
/* #endregion */

/* #region Sidebar */
.sidebar {
  position: fixed;
  top: var(--height-header);
  left: 0;
  width: var(--width-sidebar);
  height: calc(100vh - var(--height-header));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background-color: var(--color-background-sidebar);
  border-right: 1px solid var(--color-border);
  font-size: 14px;
  line-height: 20px;
  z-index: var(--z-index-sidebar);
}
.sidebar ol {
  padding-left: 1rem;
  transition: height var(--transition-duration);
  overflow: hidden;
}
.sidebar > ol {
  padding-top: 2rem;
  padding-bottom: 2rem;
}
.sidebar .nav_link {
  position: relative;
  padding: 5px 1rem;
  display: block;
  border: 1px solid transparent;
  border-right: none;
}
.sidebar .nav_link.active {
  background-color: var(--color-background);
  border-color: var(--color-border) !important;
}
.sidebar .nav_link:hover {
  background-color: var(--color-background-faded);
}
.sidebar [class^='czs-angle-'] {
  position: absolute;
  display: none;
  top: 0;
  right: 0;
  width: 30px;
  height: 30px;
  background-size: 18px;
  opacity: 0;
}
.fold > .nav_link,
.unfold > .nav_link {
  padding-right: 30px;
}
.sidebar .czs-angle-up-l {
  display: inline-block;
}
.fold .czs-angle-up-l {
  display: none;
}
.fold .czs-angle-down-l {
  display: inline-block;
}
.fold [class^='czs-angle-'],
.sidebar .nav_link:hover [class^='czs-angle-'],
.sidebar .nav_link.no_link [class^='czs-angle-'] {
  opacity: var(--opacity);
}
.sidebar .nav_link:hover [class^='czs-angle-']:hover,
.sidebar .nav_link.no_link:hover [class^='czs-angle-'] {
  opacity: 1;
}
/* #endregion */

/* #region Main */
.main {
  margin: var(--height-header) 0 0 0;
  display: flex;
  justify-content: center;
}
.sidebar + .main,
.sidebar ~ footer {
  margin-left: var(--width-sidebar);
}
.main_article {
  overflow: auto;
  padding: 0 1rem;
  width: 44rem;
  max-width: 44rem;
  word-wrap: break-word;
}

.main_post_meta {
  margin: 1rem 0 2rem;
  color: var(--color-text-muted);
  font-size: var(--font-size-small);
}

.anchor {
  opacity: 0;
  color: var(--color-text-muted);
  font-weight: normal;
  margin-left: 0.5em;
}
.anchor:hover {
  color: var(--color-primary);
  text-decoration: none;
}

h1:hover .anchor,
h2:hover .anchor,
h3:hover .anchor,
h4:hover .anchor,
h5:hover .anchor,
h6:hover .anchor {
  opacity: 1;
}

.table_wrapper {
  display: block;
  overflow-x: auto;
}

.prev_next {
  display: flex;
  align-items: stretch;
  margin-top: 3rem;
}
.prev_next a {
  width: calc(50% - 1rem);
  display: flex;
  align-items: center;
  display: inline-block;
  padding: 1rem;
  background-color: var(--color-background-sidebar);
  line-height: var(--line-height-small);
}
.prev_next a:hover {
  text-decoration: none;
  background-color: var(--color-background-faded);
}
.prev_next .prev {
  margin-right: 1rem;
}
.prev_next .next {
  text-align: right;
  margin-left: calc(50% + 2rem);
  justify-content: flex-end;
}
.prev_next .prev + .next {
  margin-left: 1rem;
}

article.loading {
  min-height: calc(100vh - var(--height-header));
  display: flex;
  justify-content: center;
  align-items: center;
}
/* #endregion */

/* #region Archives */
.main_archives {
  padding: 0;
  list-style: none;
}
.main_archives time {
  float: left;
  font-size: 12px;
  line-height: 20px;
}
.main_archives time + div {
  margin-left: 5.5rem;
}
.main_archives a {
  color: var(--color-text);
}
/* #endregion */

/* #region Toc */
.main_toc_container {
  width: calc(var(--width-toc) + 2rem);
  min-width: calc(var(--width-toc) + 2rem);
  font-size: 14px;
  line-height: var(--line-height-small);
  padding: 2rem 1rem;
}
.main_toc {
  position: fixed;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 6rem);
  overflow: auto;
}
.toc_ad {
  margin-bottom: 2rem;
}
.is_dark .toc_ad {
  opacity: var(--opacity);
  transition: opacity var(--transition-duration);
}
.is_dark .toc_ad:hover {
  opacity: 1;
}
.toc {
  width: var(--width-toc);
  min-width: var(--width-toc);
  margin-left: -1rem;
}
.toc ol {
  margin: 0;
  list-style: none;
  padding-left: 1rem;
}
/* #endregion */

/* #region Footer */
footer {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-small);
  padding: 3rem 0;
}
/* #endregion */

/* #region Tools */
.tools {
  position: fixed;
  flex-direction: column;
  bottom: 0;
  right: 0;
  margin: 2rem;
}
.tools a {
  margin-top: 0.5rem;
  background-color: var(--color-background-sidebar);
}
.tools a:hover {
  background-color: var(--color-background-faded);
}
/* #endregion */

/* #region Gitalk */
.gt-container {
  margin: 2rem auto 0;
  color: var(--color-text);
  fill: var(--color-text);
}
.is_dark #gitalk-container * {
  border-color: var(--color-border);
}
.is_dark .gt-container .gt-btn {
  background-color: hsl(210, 70%, 40%);
}
.is_dark .gt-container .gt-btn:hover {
  background-color: hsl(210, 70%, 35%);
}
.is_dark .gt-container .gt-header-textarea,
.is_dark .gt-container .gt-popup,
.is_dark .gt-container .gt-comment-content,
.is_dark .gt-container .gt-comment-admin .gt-comment-content,
.is_dark .gt-container .gt-header-preview {
  background-color: var(--color-background-sidebar);
  color: var(--color-text);
}
.is_dark .gt-container .gt-btn-preview {
  background-color: var(--color-background-sidebar);
}
.is_dark .gt-container .gt-header-textarea:hover,
.is_dark .gt-container .gt-header-textarea:focus,
.is_dark .gt-container .gt-btn-preview:hover {
  background-color: var(--color-background-faded);
}
.is_dark .gt-container a.is--active,
.is_dark .gt-container a.is--active:hover {
  color: var(--color-text);
}
.is_dark .gt-container .gt-comment-body {
  color: var(--color-text) !important;
}
.is_dark .gt-container .gt-comment-content:hover {
  box-shadow: none;
}
.is_dark .markdown-body .highlight pre,
.markdown-body pre {
  opacity: var(--opacity);
}
/* #endregion */

/* #region Mobile */
@media screen and (min-width: 1024px) {
  .show_on_mobile {
    display: none;
  }
}
@media screen and (max-width: 1247px) {
  .main_toc_container {
    display: none;
  }
}
@media screen and (max-width: 1023px) {
  .hide_on_mobile {
    display: none;
  }
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-duration);
  }
  .show_sidebar .sidebar {
    transform: translateX(0);
    box-shadow: var(--box-shadow);
  }
  .sidebar [class^='czs-angle-'] {
    opacity: 1 !important;
  }
  .mobile_title {
    font-size: 1rem;
  }
  .mobile_title a {
    display: inline;
    font-size: 1rem;
    font-weight: normal;
    padding: 0;
  }
  .mobile_title a:hover {
    color: inherit;
  }
  header li {
    margin-left: 0.5rem;
  }
  header li:last-child {
    margin-right: 0.5rem;
  }
  .sidebar + .main,
  .sidebar ~ footer {
    margin-left: 0;
  }
  .anchor {
    opacity: 1;
  }
  .prev_next a {
    font-size: 14px;
    width: calc(50% - 0.5rem);
  }
  .prev_next .prev {
    margin-right: 0.5rem;
  }
  .prev_next .next {
    margin-left: calc(50% + 0.5rem);
  }
  .prev_next .prev + .next {
    margin-left: 0.5rem;
  }
}

@media screen and (max-width: 44rem) {
  .main_article {
    width: 100vw;
  }
  pre[class*='language-'] {
    margin-left: -1rem !important;
    margin-right: -1rem !important;
  }
  li pre[class*='language-'],
  blockquote pre[class*='language-'] {
    margin-left: 0 !important;
  }
}
/* #endregion */

/* #region Print */
@media print {
  header,
  .sidebar,
  .main_toc_container,
  .prev_next,
  .tools,
  .gitalk-container,
  footer {
    display: none;
  }
  .main {
    margin: 0 auto !important;
  }
  .main_article a[href]::after {
    content: ' (' attr(href) ') ';
  }
}
/* #endregion */