/* Use display font for headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
}

/* Tighter spacing for header title and subtitle */
header nav > ul:first-child h1 {
    margin-bottom: 0.25rem;
}

header nav > ul:first-child p {
    margin-top: 0;
    margin-bottom: 0;
}

/* Remove top padding from main container */
main.container {
    padding-top: 0;
}

/* Center footer */
footer.container {
    text-align: center;
}

/* Expanding search input */
.search-input {
    width: 2em !important;
    transition: width 0.3s ease;
}

.search-input:focus {
    width: 12em !important;
}

/* Use display font for definition list terms */
dt {
    font-family: var(--font-display);
    font-weight: bold;
}

/* Collapsible breadcrumb in header */
.breadcrumb {
    font-size: 0.9em;
    color: var(--pico-muted-color);
    display: inline-flex;
    align-items: baseline;
    gap: 0;
}

.breadcrumb a {
    color: inherit;
    text-decoration: none;
}

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

/* Breadcrumb separator */
.breadcrumb-sep {
    margin: 0;
    display: inline-block;
}

/* Collapsed separators should not take space */
.breadcrumb-sep.breadcrumb-collapsed {
    margin-right: 0;
}

.breadcrumb-sep-last {
    margin-left: 0;
    margin-right: 8px;
    display: inline-block;
}

/* Collapsed breadcrumb items */
.breadcrumb-collapsed {
    max-width: 0px;
    overflow: hidden;
    display: inline-block;
    white-space: nowrap;
    opacity: 0;
    transition:
        max-width 0.3s ease,
        opacity 0.3s ease;
    vertical-align: middle;
    visibility: hidden;
}

/* The trail expands when a » toggle is clicked (see .breadcrumb-toggle),
   not on hover */
.breadcrumb.expanded .breadcrumb-collapsed {
    max-width: 200px;
    opacity: 1;
    visibility: visible;
}

.breadcrumb-toggle {
    cursor: pointer;
    user-select: none;
    background: none;
    border: none;
    padding: 0;
    color: var(--pico-muted-color);
    font-weight: normal;
}

/* Expanded: the toggle stays visible as a plain separator */
.breadcrumb.expanded .breadcrumb-toggle {
    cursor: default;
    color: var(--pico-muted-color);
}

/* Post metadata section */
.post-header {
    margin-bottom: 2em;
}

.post-meta {
    margin-top: 0.5em;
    margin-bottom: 1.5em;
    padding-bottom: 1em;
    border-bottom: 1px solid var(--pico-muted-border-color);
    display: flex;
    flex-direction: column;
    gap: 0.5em;
    font-size: 0.9em;
    color: var(--pico-muted-color);
}

.post-meta span {
    display: block;
}

.post-date {
    font-weight: 500;
}

.post-updated {
    font-weight: normal;
    font-style: italic;
}

.post-taxonomies {
    margin-top: 0;
    display: block;
    font-size: 0.85em;
    color: var(--pico-muted-color);
}

.taxonomy a {
    color: var(--pico-primary);
    text-decoration: none;
}

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

/* Post content */
.post-content {
    line-height: 1.6;
}

.post-content > p:first-child {
    margin-top: 0;
}

/* Table of contents */
.table-of-contents {
    margin: 1.5em 0;
    padding: 1em;
    background: var(--pico-card-background-color);
    border: 1px solid var(--pico-muted-border-color);
    border-radius: 4px;
}

/* Hero section (shortcode) */
.hero {
    padding: 2rem;
    margin: 2rem 0;
    background: var(--b16-base01);
    border-radius: 1em;
    border: 1px solid var(--b16-base02);
}

.hero h1:first-child,
.hero h2:first-child,
.hero h3:first-child {
    margin-top: 0;
}

.hero p:last-child {
    margin-bottom: 0;
}

/* Admonitions */
.admonition {
    padding: 1rem 1.25rem;
    margin: 1.5em 0;
    border-radius: var(--pico-border-radius);
    border-left: 4px solid;
    background: var(--pico-card-background-color);
}

.admonition-title {
    font-weight: 600;
    font-family: var(--font-display);
    margin-bottom: 0.75rem;
    font-size: 1.1em;
}

.admonition-content {
    margin: 0;
}

.admonition-content > *:first-child {
    margin-top: 0;
}

.admonition-content > *:last-child {
    margin-bottom: 0;
}

/* Note - blue/cyan */
.admonition-note {
    border-left-color: var(--b16-base0D);
    background: rgba(from var(--b16-base0D) r g b / 0.05);
}

.admonition-note .admonition-title {
    color: var(--b16-base0D);
}

/* Warning - orange */
.admonition-warning {
    border-left-color: var(--b16-base0E);
    background: rgba(from var(--b16-base0E) r g b / 0.05);
}

.admonition-warning .admonition-title {
    color: var(--b16-base0E);
}

/* Tip - green */
.admonition-tip {
    border-left-color: var(--b16-base0B);
    background: rgba(from var(--b16-base0B) r g b / 0.05);
}

.admonition-tip .admonition-title {
    color: var(--b16-base0B);
}

/* Danger - red */
.admonition-danger {
    border-left-color: var(--b16-base08);
    background: rgba(from var(--b16-base08) r g b / 0.05);
}

.admonition-danger .admonition-title {
    color: var(--b16-base08);
}

/* Info - teal/cyan */
.admonition-info {
    border-left-color: var(--b16-base0C);
    background: rgba(from var(--b16-base0C) r g b / 0.05);
}

.admonition-info .admonition-title {
    color: var(--b16-base0C);
}

/* Success - green */
.admonition-success {
    border-left-color: var(--b16-base0B);
    background: rgba(from var(--b16-base0B) r g b / 0.05);
}

.admonition-success .admonition-title {
    color: var(--b16-base0B);
}

/* Cards with bottom-aligned actions */
.grid .card {
    display: flex;
    flex-direction: column;
}

.grid .card > *:last-child {
    margin-top: auto;
}

/* Book layout */
.book-layout {
    display: flex;
    gap: 2em;
    margin: 2em 0;
}

.book-sidebar {
    width: 250px;
    flex-shrink: 0;
    position: sticky;
    top: 1em;
    max-height: calc(100vh - 2em);
    overflow-y: auto;
    overflow-x: hidden;
    transition: width 0.3s ease;
}

.book-sidebar.collapsed {
    width: 50px;
}

.book-sidebar.collapsed .book-title,
.book-sidebar.collapsed .book-toc {
    display: none;
}

.book-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1em;
}

.book-sidebar-toggle {
    background: var(--pico-background-color);
    border: 1px solid var(--pico-primary);
    border-radius: var(--pico-border-radius);
    padding: 0.375em 0.5em;
    cursor: pointer;
    font-size: 1.1em;
    color: var(--pico-primary);
    flex-shrink: 0;
    transition: all 0.2s ease;
    line-height: 1;
    min-width: 2em;
}

.book-sidebar-toggle:hover {
    background: var(--pico-primary);
    color: var(--pico-primary-inverse);
    border-color: var(--pico-primary);
}

.book-title {
    font-family: var(--font-display);
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 1em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.book-title a {
    color: inherit;
    text-decoration: none;
}

.book-content {
    flex: 1;
    min-width: 0;
}

.chapter-header {
    margin-bottom: 1.5em;
}

.chapter-number {
    display: block;
    font-family: var(--font-display);
    font-size: 0.9em;
    color: var(--pico-muted-color);
    margin-bottom: 0.5em;
}

/* Book TOC (sidebar and index) */
.book-toc,
.book-full-toc {
    font-size: 0.95em;
}

.toc-item {
    margin: 0.25em 0;
}

.toc-link,
.toc-title {
    display: block;
    font-family: var(--font-display);
    color: inherit;
    text-decoration: none;
    padding: 0.25em 0.5em;
    border-radius: 4px;
    transition: background 0.2s;
    line-height: 1.5;
    min-height: 1.5em;
}

.toc-link:hover,
.toc-title:not(.disabled):hover {
    background: var(--pico-secondary-hover-background);
}

.toc-link.active {
    background: var(--pico-secondary-background);
    font-weight: 500;
}

.toc-title.disabled {
    color: var(--pico-muted-color);
}

.toc-group {
    margin-left: 0;
}

details.toc-group {
    margin: 0 !important;
    padding: 0;
}

.toc-summary {
    cursor: pointer;
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 0.5em;
}

.toc-summary .toc-link,
.toc-summary .toc-title {
    flex: 1;
}

/* Position the details marker properly */
.toc-summary::-webkit-details-marker {
    flex-shrink: 0;
}

.toc-summary::marker {
    flex-shrink: 0;
}

.toc-children {
    margin-left: 1em;
    margin-bottom: 0;
    padding-left: 0.5em;
    border-left: 2px solid var(--pico-muted-border-color);
}

.toc-level-1 .toc-link {
    font-size: 0.95em;
}

/* Definition lists */
dt {
    font-weight: bold;
}

/* Book index page */
.book-index-content {
    max-width: 800px;
}

.book-full-toc-mobile {
    display: none;
}

.book-description {
    font-size: 1.1em;
    color: var(--pico-muted-color);
    margin-bottom: 2em;
}

.book-full-toc {
    margin: 2em 0;
}

/* Chapter navigation */
.chapter-nav {
    display: flex;
    justify-content: space-between;
    gap: 1em;
    margin: 3em 0 2em;
    padding-top: 1em;
    border-top: 1px solid var(--pico-muted-border-color);
}

.chapter-nav a {
    padding: 0.5em 1em;
    background: var(--pico-secondary-background);
    border-radius: 4px;
    text-decoration: none;
    color: inherit;
    transition: background 0.2s;
}

.chapter-nav a:hover {
    background: var(--pico-secondary-hover-background);
    text-decoration: none;
}

.nav-prev,
.nav-next {
    flex: 1;
}

.nav-up {
    flex: 0 0 auto;
}

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

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

/* Responsive book layout */
@media (max-width: 768px) {
    .book-layout {
        flex-direction: column;
    }

    .book-sidebar {
        width: 100%;
        position: static;
        max-height: none;
        order: -1;
    }

    .book-sidebar.collapsed {
        width: 100%;
    }

    .book-sidebar.collapsed .book-title,
    .book-sidebar.collapsed .book-toc {
        display: block;
    }

    .book-full-toc-mobile {
        display: block;
        margin-top: 2em;
    }

    .chapter-nav {
        flex-wrap: wrap;
    }

    .nav-up {
        flex: 1 1 100%;
        text-align: center;
        order: -1;
    }
}

/* Code blocks - allow horizontal scroll */
.book-content pre,
main pre {
    overflow-x: auto !important;
    max-width: 100%;
    position: relative; /* For absolute positioning of copy button */
}

.book-content code,
main code {
    white-space: pre !important;
}

/* Prevent copy button from causing horizontal scroll */
.hljs-copy-button {
    position: absolute;
    right: 0;
    top: 0;
    transform: translateY(-100%); /* Move up outside when not hovered */
    transition: transform 0.2s;
}

.hljs-copy-button:hover,
.hljs-copy-button:focus {
    transform: translateY(0); /* Slide down from top when hovered */
}

/* Centered figures */
figure {
    text-align: center;
}

/* PhotoSwipe Gallery */
.pswp-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.pswp-gallery a {
    display: block;
    border-radius: var(--pico-border-radius);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pswp-gallery a:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.pswp-gallery img,
.pswp-gallery video {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

/* Responsive gallery */
@media (max-width: 768px) {
    .pswp-gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.75rem;
    }

    .pswp-gallery img,
    .pswp-gallery video {
        height: 150px;
    }
}

@media (min-width: 1200px) {
    .pswp-gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .pswp-gallery img,
    .pswp-gallery video {
        height: 250px;
    }
}

/* Gallery Swiper Carousel */
.gallery-swiper {
    margin: 2rem 0;
    padding: 1rem 0;
}

.gallery-swiper .swiper-slide {
    height: auto;
}

.gallery-swiper .gallery-slide-link {
    display: block;
    border-radius: var(--pico-border-radius);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.gallery-swiper .gallery-slide-link:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.gallery-swiper img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

/* Swiper navigation button styling to match theme */
.gallery-swiper .swiper-button-prev,
.gallery-swiper .swiper-button-next {
    color: var(--pico-primary);
    transition: color 0.2s ease;
}

.gallery-swiper .swiper-button-prev:hover,
.gallery-swiper .swiper-button-next:hover {
    color: var(--pico-primary-hover);
}

/* Swiper pagination */
.gallery-swiper .swiper-pagination-bullet {
    background: var(--pico-muted-color);
    opacity: 0.5;
}

.gallery-swiper .swiper-pagination-bullet-active {
    background: var(--pico-primary);
    opacity: 1;
}

/* Header nav: let the two lists stack and wrap on narrow screens
   instead of forcing the whole page into horizontal scroll */
header nav {
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
}

header nav > ul {
    flex-wrap: wrap;
    row-gap: 0.25rem;
}

/* Language switcher: open horizontally as an overlay so expanding it
   doesn't push the header or relayout the page */
header nav details {
    position: relative;
}

header nav details[open] ul {
    position: absolute;
    right: 0;
    top: 100%;
    display: flex;
    flex-direction: row;
    gap: 0.75rem;
    margin: 0.25rem 0 0;
    padding: 0.35rem 0.6rem;
    background: var(--pico-card-background-color);
    border: 1px solid var(--pico-muted-border-color);
    border-radius: 0.4rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    list-style: none;
    white-space: nowrap;
    z-index: 10;
}

/* "Showing the latest N posts" note on capped index pages */
.index-note {
    color: var(--pico-muted-color);
    font-size: 0.9em;
    margin-bottom: 1.5em;
}