/* === Variables === */
:root {
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-500: #adb5bd;
  --color-link: #bc1b32;
  --color-visited-link: #bc1b32;
  --body-background: white;
  --body-font-color: black;
  --icon-filter: none;
}

/* === Reset & Base === */
html {
  font-size: 15px;
  scroll-behavior: smooth;
  touch-action: manipulation;
}

body {
  min-width: 30rem;
  color: var(--body-font-color);
  background: var(--body-background);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  box-sizing: border-box;
  margin: 0;
}

*, *::before, *::after {
  box-sizing: inherit;
}

h1, h2, h3, h4, h5 {
  font-weight: normal;
}

img {
  vertical-align: baseline;
}

a {
  color: var(--color-link);
}

a:visited {
  color: var(--color-visited-link);
}

.hidden {
  display: none;
}

.flex {
  display: flex;
}

.align-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.clearfix {
  clear: both;
}

/* === Layout === */
.container {
  max-width: 80rem;
  margin: 0 auto;
}

.book-page {
  min-width: 30rem;
  flex-grow: 1;
  padding: 1rem;
}

.book-icon {
  filter: var(--icon-filter);
}

/* === Brand === */
h-title-site {
  display: block;
  font-family: "Garamond", serif;
  font-size: 1.75em;
  font-style: italic;
  margin: 5px 0;
}

h-title-site a {
  text-decoration: none;
  color: inherit;
}

.book-brand {
  margin-top: 0;
  margin-bottom: 1rem;
}

.book-brand img {
  height: 1.5em;
  width: 1.5em;
  margin-inline-end: 0.5rem;
}

/* === Menu Sidebar === */
aside.book-menu {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.book-menu {
  flex: 0 0 14rem;
  font-size: 0.875rem;
}

.book-menu .book-menu-content {
  width: 14rem;
  padding: 1rem;
  background: var(--body-background);
  position: fixed;
  top: 0;
  bottom: 0;
  overflow-x: hidden;
  overflow-y: auto;
}

.book-menu a,
.book-menu label {
  color: inherit;
  cursor: pointer;
  word-wrap: break-word;
}

.book-menu a.active {
  color: var(--color-link);
}

aside nav ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

aside nav ul li {
  margin: 1em 0;
  position: relative;
}

aside nav ul a {
  display: block;
}

aside nav ul a:hover {
  opacity: 0.5;
}

aside nav ul ul {
  padding-inline-start: 1rem;
}

/* === TOC (bottom of sidebar) === */
.book-toc-content {
  margin-top: auto;
  width: 14rem;
  padding: 1rem;
  position: fixed;
  bottom: 0;
  overflow-y: auto;
  font-size: 0.75rem;
}

.book-toc-content nav > ul > li:first-child {
  margin-top: 0;
}

/* === Search === */
.book-search {
  position: relative;
  margin: 1rem 0;
  border-bottom: 1px solid transparent;
}

.book-search input {
  width: 100%;
  padding: 0.5rem;
  border: 0;
  border-radius: 0.25rem;
  background: var(--gray-100);
  color: var(--body-font-color);
}

.book-search input:required + .book-search-spinner {
  display: block;
}

.book-search-spinner {
  position: absolute;
  top: 0;
  margin: 0.5rem;
  margin-inline-start: calc(100% - 1.5rem);
  width: 1rem;
  height: 1rem;
  border: 1px solid transparent;
  border-top-color: var(--body-font-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.book-search small {
  opacity: 0.5;
}

#book-search-results {
  list-style: none;
  padding: 0;
}

#book-search-results li {
  margin: 0.5em 0;
}

#book-search-results a {
  display: block;
}

#book-search-results small {
  opacity: 0.5;
}

/* === Mobile Header === */
.book-header {
  display: none;
  margin-bottom: 1rem;
}

.book-header label {
  line-height: 0;
}

.book-header img.book-icon {
  height: 1.5em;
  width: 1.5em;
}

/* === Page Content === */
.book-post {
  margin-bottom: 0;
}

/* === Footer === */
.book-footer {
  padding-top: 1rem;
  font-size: 0.875rem;
}

.book-footer img {
  height: 1em;
  width: 1em;
  margin-inline-end: 0.5rem;
}

/* === Pagination === */
ul.pagination {
  display: flex;
  justify-content: center;
  list-style-type: none;
  padding-inline-start: 0;
}

ul.pagination .page-item a {
  padding: 1rem;
}

/* === Section Flat (taxonomy sidebar) === */
.book-section-flat {
  margin: 2rem 0;
}

.book-section-flat > a,
.book-section-flat > span,
.book-section-flat > label {
  font-weight: bolder;
}

.book-section-flat > ul {
  padding-inline-start: 0;
}

/* === Post Listing === */
.header-container {
  display: flex;
  flex-direction: column;
}

.title-date-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.header-container .anchor {
  display: none;
}

.header-container h1,
.header-container h2,
.header-container h3,
.header-container h4,
.header-container h5,
.header-container h6 {
  margin: 0;
  font-size: inherit;
}

.title-date-container h4 {
  font-size: 1.05em;
  font-weight: bold;
}

.title-date-container h5 {
  flex-shrink: 0;
  white-space: nowrap;
  width: 10rem;
  text-align: right;
}

.post-summary h5 {
  font-weight: lighter;
}

.post-summary {
  font-style: italic;
  font-weight: lighter;
  margin-bottom: 10px;
  margin-right: 10rem;
}

/* === Markdown Content === */
.markdown {
  line-height: 1.2;
}

.markdown > :first-child {
  margin-top: 0;
}

.markdown h1 {
  font-size: 1.6em;
  font-weight: bold;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

.markdown h2 {
  font-size: 1.35em;
  font-weight: bold;
  margin-top: 1.4em;
  margin-bottom: 0.4em;
}

.markdown h3 {
  font-size: 1.15em;
  font-weight: bold;
  margin-top: 1.3em;
  margin-bottom: 0.3em;
}

.markdown h4 {
  font-size: 1.05em;
  font-weight: bold;
  margin-top: 1.2em;
  margin-bottom: 0.3em;
}

.markdown h5 {
  font-size: 0.95em;
  font-weight: bold;
  margin-top: 1.1em;
  margin-bottom: 0.2em;
}

.markdown h6 {
  font-size: 0.85em;
  font-weight: bold;
  margin-top: 1em;
  margin-bottom: 0.2em;
}

.markdown h1 a,
.markdown h2 a,
.markdown h3 a,
.markdown h4 a,
.markdown h5 a,
.markdown h6 a {
  color: inherit;
  text-decoration: none;
}

.markdown h1 a:visited,
.markdown h2 a:visited,
.markdown h3 a:visited,
.markdown h4 a:visited,
.markdown h5 a:visited,
.markdown h6 a:visited {
  color: inherit;
}

.markdown b,
.markdown optgroup,
.markdown strong {
  font-weight: bolder;
}

.markdown a {
  text-decoration: none;
}

.markdown a:hover {
  text-decoration: underline;
}

.markdown a:visited {
  color: var(--color-visited-link);
}

.markdown img {
  max-width: 100%;
  height: auto;
}

.markdown code {
  padding: 0 0.25rem;
  background: var(--gray-200);
  border-radius: 0.25rem;
  font-size: 0.75em;
}

.markdown pre {
  padding: 1rem;
  background: var(--gray-100);
  border-radius: 0.25rem;
  overflow-x: auto;
}

.markdown pre code {
  padding: 0;
  background: none;
}

.markdown p {
  word-wrap: break-word;
}

.markdown blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem 0.5rem 0.75rem;
  border-inline-start: 0.25rem solid var(--gray-200);
  border-radius: 0.25rem;
}

.markdown blockquote :first-child {
  margin-top: 0;
}

.markdown blockquote :last-child {
  margin-bottom: 0;
}

.markdown table {
  font-size: 0.75em;
  overflow: auto;
  display: block;
  border-spacing: 0;
  border-collapse: collapse;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.markdown table tr,
.markdown table td {
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  padding: 0.6rem;
}

.markdown table tr:nth-child(2n) {
  background: var(--gray-100);
}

.markdown hr {
  height: 1px;
  border: none;
  background: var(--gray-200);
}

.markdown ul,
.markdown ol {
  padding-inline-start: 2rem;
  word-wrap: break-word;
}

.markdown dl dt {
  font-weight: bolder;
  margin-top: 1rem;
}

.markdown dl dd {
  margin-inline-start: 0;
  margin-bottom: 1rem;
}

.markdown .highlight table tr td:nth-child(1) pre {
  margin: 0;
  padding-inline-end: 0;
}

.markdown .highlight table tr td:nth-child(2) pre {
  margin: 0;
  padding-inline-start: 0;
}

.markdown details {
  padding: 1rem;
  border: 1px solid var(--gray-200);
  border-radius: 0.25rem;
}

.markdown details summary {
  line-height: 1;
  padding: 1rem;
  margin: -1rem;
  cursor: pointer;
}

.markdown details[open] summary {
  margin-bottom: 0;
}

.markdown figure {
  margin: 1rem 0;
}

.markdown figure figcaption p {
  margin-top: 0;
}

/* === Grid / Column Shortcodes === */
.grid {
  display: flex;
  flex-wrap: wrap;
  margin-right: -15px;
  margin-left: -15px;
}

.columns {
  display: flex;
  align-items: flex-start;
}

.column pre,
.column .highlight {
  overflow-x: auto;
  max-width: 100%;
  box-sizing: border-box;
}

.code-column {
  width: 50%;
  padding-right: 5px;
  padding-left: 5px;
  box-sizing: border-box;
}

.sourceCode {
  background-color: #f8f8f8;
  border-left: 3px solid #f0f0f0;
  padding: 0.5em;
}

/* === Transitions === */
.book-menu-content,
.book-toc-content,
.book-page,
.book-header aside,
.markdown {
  transition: 0.2s ease-in-out;
  transition-property: transform, margin, opacity, visibility;
  will-change: transform, margin, opacity;
}

/* === Responsive / Mobile === */
input.toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

@media screen and (max-width: 50rem) {
  .book-menu {
    visibility: hidden;
    margin-inline-start: -14rem;
    font-size: 15px;
    z-index: 1;
  }

  .book-header {
    display: block;
  }

  #menu-control:checked ~ main .book-menu {
    visibility: initial;
  }

  #menu-control:checked ~ main .book-menu .book-menu-content {
    transform: translateX(14rem);
    box-shadow: 0 0 0.5rem rgba(0, 0, 0, 0.1);
  }

  #menu-control:checked ~ main .book-page {
    opacity: 0.25;
  }

  #menu-control:checked ~ main .book-menu-overlay {
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
  }

  #toc-control:checked ~ main .book-header aside {
    display: block;
  }

  .code-column {
    width: 100%;
  }
}

/* === Extra padding for big screens === */
@media screen and (min-width: 80rem) {
  .book-page,
  .book-menu .book-menu-content,
  .book-toc .book-toc-content {
    padding: 2rem 1rem;
  }
}