/* static/frontend/css/frontend.css */
/*
 * This is the plain frontend starting point.
 */

/* ========= Tokens and reset ========= */
:root {
  --content-max: 1120px;
  --page-gutter: 1rem;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --main-menu-height: 3rem;
  --page-bg: #fff;
  --text: #222;
  --heading: #333;
  --muted: #444;
  --link: #1A73E8;
  --link-hover: #1558B0;
  --surface: #f2f2f2;
  --border: #ccc;
  --book: #1c6b8c;
  --book-hover: #288a99;
  --rod: #ffd700;
}

html {
  font-size: 100%;
  box-sizing: border-box;
}

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

body,
button,
input,
select,
textarea {
  font-family:
    -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

body {
  margin: 0;
  padding: 0;
  color: var(--text);
  background: var(--page-bg);
  line-height: 1.5;
}

img,
video,
iframe,
embed,
object {
  max-width: 100%;
}

img {
  height: auto;
}

pre {
  max-width: 100%;
  overflow-x: auto;
}

table {
  max-width: 100%;
  border-collapse: collapse;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--heading);
  line-height: 1.2;
}

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

a:hover {
  color: var(--link-hover);
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

/* ========= Shared page chrome ========= */
.site-header,
footer {
  padding-inline: max(
    var(--page-gutter),
    calc((100% - var(--content-max)) / 2)
  );
}

.site-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding-block: var(--space-md);
}

.site-branding {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-header > .site-branding {
  flex: 1 1 12rem;
  min-width: 0;
}

.logo-link {
  display: inline-flex;
  align-items: center;
}

.logo-link img {
  display: block;
}

.site-title {
  color: var(--heading);
  font-weight: 600;
  font-size: 2rem;
  text-decoration: none;
}

.site-title,
.site-subtitle {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.site-title:hover,
a.logo-link:hover {
  text-decoration: none;
}

/* Dedicated full-width rows inside the header. */
.header-top,
.header-bottom {
  flex-basis: 100%;
}

@media (max-width: 700px) {
  .site-header {
    align-items: flex-start;
  }

  .site-header > .site-branding {
    flex-basis: 100%;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 700px) {
  .site-header > .logo-link,
  .site-header > img {
    margin-inline: auto;
  }
}

@media (min-width: 701px) {
  .site-header {
    justify-content: center;
  }

  .site-header > .site-branding {
    flex: 0 1 auto;
  }
}

.content-wrap {
  width: min(calc(100% - (2 * var(--page-gutter))), var(--content-max));
  margin-inline: auto;
  padding-block: var(--space-xs);
}

.content-wrap main,
.widgets-section {
  min-width: 0;
}

.content-wrap main {
  overflow-wrap: anywhere;
}

footer {
  width: 100%;
  margin: 0;
  padding-block: var(--space-md);
}

/* ========= Navigation: shared menu primitives ========= */
:is(.main-menu, .top-menu) a {
  color: white;
  text-decoration: none;
}

:is(.footer-menu) a {
  color: var(--link);
}
:is(.footer-menu) a:hover {
  color: var(--link-hover);
}
:is(.main-menu, .top-menu, .footer-menu) .menu-level {
  list-style: none;
  margin: 0;
  padding: 0;
}
:is(.main-menu, .top-menu, .footer-menu) .menu-item {
  position: relative;
  margin: 0;
}
:is(.main-menu, .top-menu) .menu-item:hover {
  background: var(--book-hover);
}

:is(.main-menu, .top-menu) {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  background: var(--book);
}

:is(.main-menu, .top-menu) > .menu-level-0 {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  flex: 1 1 auto;
  min-width: 0;
  background: var(--book);
}

:is(.main-menu, .top-menu)
  > :is(.main-menu-elements, .top-menu-elements) {
  display: flex;
  align-items: center;
  margin-left: auto;
  min-width: 0;
}

@media (min-width: 701px) {
  .main-menu {
    padding-inline: max(
      var(--page-gutter),
      calc((100% - var(--content-max)) / 2)
    );
  }

  .main-menu > .menu-level-0 {
    padding-inline: 0;
  }
}

:is(.main-menu, .top-menu) .menu-level-0 > .menu-item {
  display: flex;
  align-items: stretch;
}

:is(.main-menu, .top-menu, .footer-menu) .menu-item > :is(a, .menu-label) {
  display: flex;
  align-items: center;
  min-height: 2.5rem;
  padding: var(--space-sm) 0.75rem;
}

:is(.main-menu, .top-menu)
  .menu-item:has(> .menu-toggle)
  > :is(a, .menu-label) {
  padding-right: 0;
}

:is(.main-menu, .top-menu) .menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  min-height: 2.5rem;
  padding: var(--space-sm) 0.3rem;
  border: 0;
  background: none;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

:is(.main-menu, .top-menu) .menu-toggle-icon {
  display: block;
  width: 1rem;
  height: 1rem;
  fill: currentColor;
  transition: transform 0.15s ease;
}

/* Point icon right in dropdowns */
@media (min-width: 701px) {
  :is(.main-menu, .top-menu)
    .menu-item > .menu-level
    .menu-item > .menu-toggle
    > .menu-toggle-icon,
  :is(.main-menu, .top-menu)
    .menu-item > .menu-level
    .menu-item > .menu-toggle[aria-expanded="true"]
    > .menu-toggle-icon {
    transform: rotate(-90deg);
  }
}

:is(.main-menu, .top-menu)
  .menu-toggle[aria-expanded="true"]
  .menu-toggle-icon {
  transform: rotate(180deg);
}

:is(.main-menu, .top-menu) .menu-item > .menu-level {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 40;
  min-width: 10rem;
  background: var(--book);
  border: 1px solid var(--border);
}

:is(.main-menu, .top-menu) .menu-item > .menu-level .menu-item > .menu-level {
  top: 0;
  left: 100%;
}

:is(.main-menu, .top-menu) .menu-item:hover > .menu-level,
:is(.main-menu, .top-menu) .menu-item:focus-within > .menu-level {
  display: block;
}

:is(.main-menu, .top-menu)
  .menu-item
  > .menu-level
  .menu-item
  > :is(a, .menu-label) {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-height: 2.5rem;
  padding: var(--space-sm) 0.75rem;
}

:is(.main-menu, .top-menu) .menu-item > .menu-level .menu-item.has-children {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: stretch;
}

:is(.main-menu, .top-menu)
  .menu-item
  > .menu-level
  .menu-item.has-children
  > :is(a, .menu-label) {
  grid-column: 1;
}

:is(.main-menu, .top-menu)
  .menu-item
  > .menu-level
  .menu-item.has-children
  > .menu-toggle {
  grid-column: 2;
}

/* Main menu state and sizing */
.main-menu a[aria-current="page"],
.main-menu a[aria-current="page"]:hover {
  background-color: var(--rod);
  color: var(--text);
}

.main-menu > .menu-level-0 > .menu-item > :is(a, .menu-label),
.main-menu > .menu-level-0 > .menu-item > .menu-toggle,
.main-menu[data-mobile-hamburger="1"] > .menu-mobile-toggle {
  min-height: var(--main-menu-height);
}

.menu-block {
  max-width: 100%;
  overflow-wrap: anywhere;
}

/* ========= Navigation: footer ========= */
.footer-menu {
  padding-block: var(--space-md);
}

.footer-menu .menu-toggle {
  display: none;
}

.footer-menu .menu-item > .menu-level {
  display: block;
  position: static;
  min-width: 0;
  border: 0;
  background: none;
}

.footer-menu .menu-level-0 {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  justify-content: center;
  row-gap: var(--space-md);
  column-gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-menu .menu-level-0 > .menu-item {
  display: block;
  margin: 0;
  padding-inline: var(--space-sm);
  text-align: center;
}

.footer-menu .menu-level-0 > .menu-item:nth-child(3n + 1) {
  text-align: right;
}

.footer-menu .menu-level-0 > .menu-item:nth-child(3n + 2) {
  text-align: center;
}

.footer-menu .menu-level-0 > .menu-item:nth-child(3n) {
  text-align: left;
}

.footer-menu .menu-level-0 > .menu-item:not(:nth-child(3n + 1)) {
  border-left: 1px solid var(--border);
}

.footer-menu .menu-level-0 > .menu-item > :is(a, .menu-label) {
  display: inline-block;
  min-height: 0;
  padding: 0;
  font-weight: 600;
}

.footer-menu
  .menu-level-0
  > .menu-item:not(.has-children)
  > :is(a, .menu-label) {
  font-weight: inherit;
}

.footer-menu .menu-level-1 {
  padding-block: var(--space-xs);
}

.footer-menu .menu-item > .menu-level > .menu-item {
  padding-block: 0.35rem;
}

.footer-menu .menu-item > .menu-level .menu-item > :is(a, .menu-label) {
  display: inline-block;
  flex: none;
  width: auto;
  min-height: 0;
  padding: 0;
}

.footer-menu .menu-item > .menu-level .menu-item.has-children {
  display: block;
}

.footer-menu .menu-level-1 .menu-level {
  padding-left: 0.75rem;
}

.footer-menu .menu-block {
  display: block;
  max-width: 18rem;
}

.footer-menu .menu-block img {
  max-width: 100%;
  height: auto;
}

.footer-menu .menu-block :is(p, ul, ol) {
  margin-block: 0.35rem;
}

/* ========= Navigation: mobile ========= */
.menu-mobile-toggle {
  display: none;
}

.menu-mobile-toggle-icon {
  display: block;
  flex: 0 0 auto;
  width: 1.5rem;
  height: 1.5rem;
}

@media (max-width: 700px) {
  :is(.main-menu, .top-menu)
    > :is(.main-menu-elements, .top-menu-elements) {
    flex: 0 0 100%;
    justify-content: center;
    margin-left: 0;
    margin-block: var(--space-sm);
  }

  /* Keep a search element beside the mobile menu control. */
  html.js
    :is(.main-menu, .top-menu)[data-mobile-hamburger="1"]:has(
      > :is(.main-menu-elements, .top-menu-elements)
    )
    > .menu-mobile-toggle,
  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"].menu-enhanced:has(
      > :is(.main-menu-elements, .top-menu-elements)
    )
    > .menu-mobile-toggle {
    flex: 0 0 auto;
    width: auto;
  }

  html.js
    :is(.main-menu, .top-menu)[data-mobile-hamburger="1"]:has(
      > :is(.main-menu-elements, .top-menu-elements)
    )
    > :is(.main-menu-elements, .top-menu-elements),
  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"].menu-enhanced:has(
      > :is(.main-menu-elements, .top-menu-elements)
    )
    > :is(.main-menu-elements, .top-menu-elements) {
    flex: 1 1 12rem;
    justify-content: flex-end;
    margin-block: 0;
    padding-inline: var(--space-sm);
  }

  :is(.main-menu, .top-menu) .menu-item {
    width: 100%;
    flex-wrap: wrap;
    padding-block: 0;
  }

  :is(.main-menu, .top-menu) .menu-item > :is(a, .menu-label),
  :is(.main-menu, .top-menu) .menu-toggle {
    min-height: var(--main-menu-height);
  }

  :is(.main-menu, .top-menu) .menu-toggle {
    min-width: 3rem;
    width: 3rem;
    margin: 0 var(--space-sm);
    padding: 0;
    background: #ddd;
  }

  :is(.main-menu, .top-menu) .menu-level-0 {
    flex-direction: column;
  }

  :is(.main-menu, .top-menu) .menu-item.has-children {
    display: flex;
    align-items: stretch;
  }

  :is(.main-menu, .top-menu) .menu-item > :is(a, .menu-label) {
    flex: 1 1 auto;
  }

  :is(.main-menu, .top-menu) .menu-item > .menu-level {
    position: static;
    flex-basis: 100%;
    width: 100%;
    min-width: 0;
    border: 0;
    padding-left: var(--space-md);
  }

  html.js
    :is(.main-menu, .top-menu)[data-mobile-hamburger="1"]
    > .menu-mobile-toggle,
  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"].menu-enhanced
    > .menu-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-sm);
    width: 100%;
    min-height: var(--main-menu-height);
    padding: var(--space-sm) 0.75rem;
    border: 0;
    background: var(--book);
    color: white;
    font: inherit;
    text-align: left;
    cursor: pointer;
  }

  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"] > .menu-level-0 {
    display: flex;
  }

  html.js
    :is(.main-menu, .top-menu)[data-mobile-hamburger="1"]
    > .menu-level-0,
  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"].menu-enhanced
    > .menu-level-0 {
    display: none;
  }

  html.js
    :is(.main-menu, .top-menu)[data-mobile-hamburger="1"].mobile-open
    > .menu-level-0,
  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"].menu-enhanced.mobile-open
    > .menu-level-0 {
    display: flex;
    flex: 0 0 100%;
    order: 1;
    width: 100%;
  }

  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"]:not(.menu-enhanced)
    .menu-item
    > .menu-level {
    display: block;
  }

  :is(.main-menu, .top-menu)[data-mobile-hamburger="1"]:not(.menu-enhanced)
    .menu-toggle {
    display: none;
  }

  :is(.main-menu, .top-menu).mobile-open
    .menu-item.has-children:not(.is-open)
    > .menu-level {
    display: none;
  }

  :is(.main-menu, .top-menu).mobile-open
    .menu-item.has-children.is-open
    > .menu-level {
    display: block;
  }
}

/* ========= Main content and widgets ========= */
@media (min-width: 901px) {
  .content-wrap.has-widgets {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(200px, 25%);
    gap: var(--space-xl);
    align-items: start;
  }
}

@media (max-width: 900px) {
  .content-wrap.has-widgets {
    display: block;
  }

  .widgets-section {
    margin-top: var(--space-xl);
  }
}

main ul,
main ol {
  padding-inline-start: 1.5rem;
}

main ul li,
main ol li,
.widgets-section ul li {
  margin-bottom: 5px;
}

.widgets-section ul {
  list-style: none;
  padding: 0;
}

main blockquote {
  margin-inline: 0;
  padding-inline: var(--space-md);
  border-inline-start: 3px solid var(--border);
  color: #555;
}

main table {
  width: 100%;
}

main th,
main td {
  padding: var(--space-sm);
  text-align: left;
  border: 1px solid var(--border);
}

.meta-strip {
  margin: var(--space-xs) 0 var(--space-sm);
  color: var(--muted);
  font-size: 0.9rem;
}

.meta-strip .meta-strip-item:not(:last-child)::after {
  content: " | ";
  color: var(--muted);
}

.meta-strip a {
  display: inline-block;
}

:is(.post-article, .page-article) > .featured-image {
  display: block;
  margin-inline: auto;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  row-gap: var(--space-sm);
  align-items: center;
  justify-content: center;
  max-width: 100%;
  margin-top: var(--space-md);
}

.pagination a,
.pagination strong,
.pagination .current {
  display: inline-block;
  padding: 5px 10px;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 3px;
}

.pagination a:hover {
  background-color: var(--surface);
}

.pagination strong,
.pagination .current {
  background-color: var(--link);
  color: white;
  border-color: var(--link);
}

.post-container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg) var(--space-md);
}

.post-container-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 700px) {
  .post-container,
  .post-container-3 {
    grid-template-columns: 1fr;
  }
}

.post-container :is(h2, h3) a {
  text-decoration: none;
}

.post-container .read-more::after {
  content: "...";
}

/* ========= Breadcrumbs and content components ========= */
.breadcrumbs {
  font-size: 0.9rem;
  width: min(calc(100% - (2 * var(--page-gutter))), var(--content-max));
  margin: var(--space-sm) auto 0;
}

.breadcrumbs ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.breadcrumbs li::after {
  content: "/";
  margin-left: 0.15rem;
}

.breadcrumbs li:last-child::after {
  content: "";
}

.author-header,
.category-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-block: var(--space-md);
}

.author-image,
.category-image {
  flex: 0 0 auto;
}

.author-biography,
.category-description {
  min-width: 0;
}

.author-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: var(--space-lg);
  padding: var(--space-md);
  border: 1px solid #eee;
  border-radius: 8px;
}

.author-avatar img {
  display: block;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
}

.author-meta {
  flex: 1;
  min-width: 0;
}

.author-name {
  font-weight: bold;
}

.author-bio {
  line-height: 1.45;
}

.site-copyright {
  text-align: center;
}

.post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  padding-block: var(--space-md);
}

.post-nav .prev-post,
.post-nav .next-post {
  min-width: 0;
}

.post-nav .prev-post {
  text-align: left;
}

.post-nav .next-post {
  text-align: right;
}

.post-nav:not(:has(.prev-post)) .next-post,
.post-nav:not(:has(.next-post)) .prev-post {
  grid-column: 1 / -1;
}

.post-nav:not(:has(.prev-post)) .next-post {
  justify-self: end;
}

.post-nav:not(:has(.next-post)) .prev-post {
  justify-self: start;
}


:is(.content-wrap, .below-main-post > .related-posts) {
  width: min(
    calc(100% - (2 * var(--page-gutter))),
    var(--content-max)
  );
  margin-inline: auto;
}

/* ========= Optional search widget ========= */
.site-search-widget {
  display: flex;
  width: 100%;
  max-width: 24rem;
  min-width: 0;
}

.site-search-widget input[type="search"],
.site-search-widget button {
  min-height: 2.5rem;
  padding: 0 0.75rem;
  border: 1px solid var(--border);
  color: inherit;
  font: inherit;
}

.site-search-widget input[type="search"] {
  min-width: 0;
  flex: 1 1 auto;
  background: #fff;
}

.site-search-widget button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  margin-left: -1px;
  background: var(--surface);
  cursor: pointer;
}

.site-search-widget .search-icon {
  display: block;
  width: 1em;
  height: 1em;
}

/* ========= Generic alignment utilities ========= */
.align-left {
  text-align: left;
}

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

.align-right {
  text-align: right;
}

.align-justify {
  text-align: justify;
  text-justify: inter-word;
}

/* ========= Figure/image alignment helpers ========= */
figure.image > img {
  display: block;
}

img.align-left,
figure.image.align-left {
  float: left;
  margin: 0 1rem 1rem 0;
}

img.align-right,
figure.image.align-right {
  float: right;
  margin: 0 0 1rem 1rem;
}

img.align-center,
figure.image.align-center {
  display: block;
  margin-inline: auto;
}

figure.image.align-justify figcaption {
  text-align: justify;
  text-justify: inter-word;
}

/* ========= Responsive and accessibility behavior ========= */
@media (max-width: 700px) {
  .author-header,
  .author-box,
  .category-header {
    flex-direction: column;
  }

  .author-avatar {
    align-self: center;
  }

  .author-meta {
    width: 100%;
  }

  img.align-left,
  img.align-right,
  figure.image.align-left,
  figure.image.align-right {
    float: none;
    display: block;
    margin: 0 auto var(--space-md);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}