/* Wikipedia Vector 2022 Modern Skin Design System */
:root {
    --mw-bg: #ffffff;
    --mw-text: #202122;
    --mw-text-muted: #54595d;
    --mw-link: #36c;
    --mw-link-visited: #6b4ba1;
    --mw-link-hover: #447ff5;
    --mw-border: #a2a9b1;
    --mw-border-subtle: #eaecf0;
    --mw-box-bg: #ffffff;
    --mw-panel-bg: #f8f9fa;
    --mw-button-bg: #f8f9fa;
    --mw-button-hover: #e8eaed;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-serif: "Linux Libertine", "Georgia", "Times", serif;
    --font-mono: "DejaVu Sans Mono", "Courier New", Courier, monospace;
    --site-max-width: 1050px;
    --site-font-size: 15px;
}

/* Dark Theme Palette */
body.theme-dark {
    --mw-bg: #101418;
    --mw-text: #eaecf0;
    --mw-text-muted: #9e9e9e;
    --mw-link: #4fc3f7;
    --mw-link-visited: #b388ff;
    --mw-link-hover: #81d4fa;
    --mw-border: #404448;
    --mw-border-subtle: #272c30;
    --mw-box-bg: #101418;
    --mw-panel-bg: #1b1f24;
    --mw-button-bg: #22272e;
    --mw-button-hover: #2d333b;
}

body {
    background-color: var(--mw-bg);
    color: var(--mw-text);
    font-family: var(--font-sans);
    font-size: var(--site-font-size);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color 0.15s ease, color 0.15s ease;
}

/* Global Link Styles */
a {
    color: var(--mw-link);
    text-decoration: none;
    transition: color 0.15s ease, text-decoration 0.15s ease;
}

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

a:hover, a:focus {
    color: var(--mw-link-hover);
    text-decoration: underline;
}

/* Body font size variants */
body.font-small { --site-font-size: 13px; }
body.font-standard { --site-font-size: 15px; }
body.font-large { --site-font-size: 17px; }

/* Page container width variants */
body.width-standard { --site-max-width: 1050px; }
body.width-wide { --site-max-width: 1440px; }

/* Vector 2022 Header Toolbar */
.vector-header {
    border-bottom: 1px solid var(--mw-border-subtle);
    padding: 10px 20px;
    background-color: var(--mw-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: transform 0.25s ease;
}

.vector-header.header-hidden {
    transform: translateY(-100%);
}

.vector-header-container {
    max-width: var(--site-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
}

.vector-header-left, .vector-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

.vector-brand h1 {
    font-family: var(--font-serif);
    font-size: 1.6em;
    font-weight: normal;
    margin: 0;
    border: none;
    padding: 0;
}

/* Wikipedia Vector Icon Button (Hidden by default when sidebar is visible) */
.vector-icon-button {
    display: none; /* Only appears IF AND ONLY IF sidebar is hidden */
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    background-color: var(--mw-bg);
    border: 1px solid var(--mw-border);
    border-radius: 2px;
    color: var(--mw-text);
    cursor: pointer;
    transition: border-color 0.15s, background-color 0.15s;
}

/* Appear IF AND ONLY IF sidebars are collapsed/hidden */
body.toc-collapsed #vector-toc-menu-btn {
    display: inline-flex;
}

body.appearance-collapsed #vector-appearance-menu-btn {
    display: inline-flex;
}

.vector-icon-button:hover {
    background-color: var(--mw-button-hover);
}

.vector-icon-button.active {
    border-color: var(--mw-link);
    box-shadow: 0 0 0 1px var(--mw-link);
}

/* Wikipedia Popover Floating Dropdown Menu */
.vector-popover {
    position: absolute;
    top: 44px;
    z-index: 1100;
    background-color: var(--mw-bg);
    border: 1px solid var(--mw-border);
    border-radius: 2px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
    padding: 14px 16px;
    min-width: 240px;
    display: none;
}

.vector-popover.visible {
    display: block;
}

.vector-popover-left {
    left: 0;
}

.vector-popover-right {
    right: 0;
}

/* Popover Arrow Indicator */
.vector-popover::before {
    content: "";
    position: absolute;
    top: -7px;
    width: 12px;
    height: 12px;
    background-color: var(--mw-bg);
    border-left: 1px solid var(--mw-border);
    border-top: 1px solid var(--mw-border);
    transform: rotate(45deg);
}

.vector-popover-left::before { left: 11px; }
.vector-popover-right::before { right: 11px; }

.popover-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--mw-border-subtle);
    padding-bottom: 6px;
}

.popover-header h2 {
    font-family: var(--font-sans);
    font-size: 1.05em;
    font-weight: bold;
    margin: 0;
    border: none;
    padding: 0;
}

.btn-move-sidebar {
    background-color: #eaecf0;
    border: none;
    color: #202122;
    padding: 3px 8px;
    font-size: 12px;
    border-radius: 2px;
    cursor: pointer;
    font-family: var(--font-sans);
}

body.theme-dark .btn-move-sidebar {
    background-color: #272c30;
    color: #eaecf0;
}

.btn-move-sidebar:hover {
    background-color: #d1d5db;
}

/* Vector Search Bar */
.vector-search-box {
    display: flex;
    align-items: center;
}

.vector-search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.vector-search-icon-svg {
    position: absolute;
    left: 10px;
    color: var(--mw-text-muted);
    pointer-events: none;
}

.vector-search-input-wrapper input {
    font-family: var(--font-sans);
    font-size: 14px;
    padding: 6px 12px 6px 32px;
    border: 1px solid var(--mw-border);
    border-right: none;
    border-top-left-radius: 2px;
    border-bottom-left-radius: 2px;
    width: 280px;
    background-color: var(--mw-bg);
    color: var(--mw-text);
    outline: none;
}

.vector-search-input-wrapper input:focus {
    border-color: var(--mw-link);
}

.vector-search-box button {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: bold;
    padding: 6px 16px;
    background-color: var(--mw-panel-bg);
    border: 1px solid var(--mw-border);
    color: var(--mw-text);
    border-top-right-radius: 2px;
    border-bottom-right-radius: 2px;
    cursor: pointer;
}

.vector-search-box button:hover {
    background-color: var(--mw-button-hover);
}

/* Main Grid Layout */
.vector-main-layout {
    max-width: var(--site-max-width);
    margin: 20px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 240px 1fr 220px;
    grid-gap: 30px;
}

body.toc-collapsed .vector-main-layout {
    grid-template-columns: 1fr 220px;
}

body.appearance-collapsed .vector-main-layout {
    grid-template-columns: 240px 1fr;
}

body.toc-collapsed.appearance-collapsed .vector-main-layout {
    grid-template-columns: 1fr;
}

main#content {
    min-width: 0;
}

/* Sidebar Containers */
.vector-sidebar-contents {
    position: sticky;
    top: 70px;
    align-self: start;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--mw-border-subtle) transparent;
}

.vector-sidebar-contents.hidden,
.vector-sidebar-appearance.hidden {
    display: none;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--mw-border-subtle);
    padding-bottom: 6px;
}

.sidebar-header h2 {
    font-family: var(--font-sans);
    font-size: 1.1em;
    font-weight: bold;
    margin: 0;
    border: none;
    padding: 0;
}

.btn-hide {
    background-color: #eaecf0;
    border: none;
    color: #202122;
    padding: 2px 8px;
    font-size: 12px;
    border-radius: 2px;
    cursor: pointer;
    font-family: var(--font-sans);
}

body.theme-dark .btn-hide {
    background-color: #272c30;
    color: #eaecf0;
}

.btn-hide:hover {
    background-color: #d1d5db;
}

/* TOC Items */
.vector-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.95em;
}

.vector-toc-list li {
    margin-bottom: 6px;
}

.vector-toc-top {
    font-weight: bold;
    margin-bottom: 8px;
}

.vector-toc-top a {
    color: var(--mw-text);
}

.toc-toggle-icon {
    display: inline-block;
    width: 18px;
    height: 18px;
    padding: 3px;
    box-sizing: border-box;
    background-color: transparent;
    border-radius: 3px;
    color: var(--mw-text-muted);
    cursor: pointer;
    user-select: none;
    margin-right: 6px;
    flex-shrink: 0;
    vertical-align: middle;
    transition: background-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.toc-toggle-icon:hover {
    background-color: var(--mw-border-subtle);
    color: var(--mw-text);
}

.toc-toggle-icon.expanded {
    transform: rotate(90deg);
}

.vector-toc-sublist {
    list-style: none;
    padding-left: 18px;
    margin: 4px 0 6px 0;
}

.vector-toc-sublist li {
    margin-bottom: 4px;
}

/* Appearance Section */
.vector-sidebar-appearance {
    position: sticky;
    top: 70px;
    align-self: start;
    font-size: 0.9em;
}

.appearance-section {
    margin-bottom: 16px;
}

.appearance-section-title {
    color: var(--mw-text-muted);
    font-size: 0.9em;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--mw-border-subtle);
    padding-bottom: 4px;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.radio-option input[type="radio"] {
    margin: 0;
    cursor: pointer;
}

/* Results Toolbar & Sort Control Styling */
.vector-results-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin: 12px 0 16px 0;
    font-size: 0.92em;
}

.vector-sort-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.vector-sort-label {
    color: var(--mw-text-muted);
    font-weight: 500;
}

.vector-sort-select {
    font-family: var(--font-sans);
    font-size: 13px;
    padding: 4px 10px;
    background-color: var(--mw-bg);
    border: 1px solid var(--mw-border);
    color: var(--mw-text);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.vector-sort-select:focus, .vector-sort-select:hover {
    border-color: var(--mw-link);
}

/* Article Styling */
article.mw-resource-article {
    margin-bottom: 14px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--mw-border-subtle);
    border-left: 3px solid transparent;
    border-radius: 4px;
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

article.mw-resource-article.kbd-focused {
    border-left-color: var(--mw-link);
    background-color: rgba(79, 195, 247, 0.08);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

body.theme-dark article.mw-resource-article.kbd-focused {
    background-color: rgba(79, 195, 247, 0.14);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

/* ArchWiki Section Headings & Bottom Border (HR Line) */
h1.firstHeading {
    font-family: var(--font-serif);
    font-size: 1.8em;
    font-weight: normal;
    border-bottom: 1px solid var(--mw-border);
    margin-top: 0;
    margin-bottom: 0.5em;
    padding-bottom: 4px;
}

h2 {
    font-family: var(--font-serif);
    font-size: 1.5em;
    font-weight: normal;
    border-bottom: 1px solid var(--mw-border);
    padding-bottom: 4px;
    margin-top: 1.8em;
    margin-bottom: 0.6em;
    color: var(--mw-text);
}

h3 {
    font-family: var(--font-sans);
    font-size: 1.15em;
    font-weight: bold;
    border-bottom: 1px solid var(--mw-border-subtle);
    padding-bottom: 3px;
    margin-top: 1.2em;
    margin-bottom: 0.4em;
    color: var(--mw-text);
}

/* Golden ArchWiki Headline Number */
.mw-headline-number {
    font-family: var(--font-serif);
    font-weight: normal;
    color: #b58900;
    margin-right: 8px;
}

body.theme-dark .mw-headline-number {
    color: #d4a017;
}

.mw-headline-text {
    color: var(--mw-text);
    font-weight: normal;
}

.mw-category-description {
    color: var(--mw-text-muted);
    font-size: 0.92em;
    line-height: 1.6;
    margin: 4px 0 12px 0;
    padding: 0;
    font-style: italic;
}

article.mw-resource-article:last-child {
    border-bottom: none;
}

article.mw-resource-article h3 {
    display: inline;
    margin: 0;
    font-size: 1.05em;
}

article.mw-resource-article cite {
    font-style: italic;
    color: var(--mw-text-muted);
    font-size: 0.95em;
    margin-left: 6px;
}

article.mw-resource-article p {
    margin: 4px 0 6px 0;
}

kbd, code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background-color: var(--mw-panel-bg);
    border: 1px solid var(--mw-border-subtle);
    border-radius: 2px;
    padding: 1px 4px;
}

/* Bookmark Button Styling */
.mw-bookmark-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background-color: var(--mw-button-bg);
    border: 1px solid var(--mw-border);
    color: var(--mw-text);
    padding: 2px 8px;
    font-size: 12px;
    border-radius: 2px;
    cursor: pointer;
    margin-left: 8px;
    transition: background-color 0.15s, border-color 0.15s;
    font-family: var(--font-sans);
}

.mw-bookmark-btn:hover {
    background-color: var(--mw-button-hover);
}

.mw-bookmark-btn.bookmarked {
    border-color: #d4a017;
    background-color: #fffdf0;
    color: #202122;
}

body.theme-dark .mw-bookmark-btn.bookmarked {
    background-color: #2c2510;
    border-color: #b58900;
    color: #eaecf0;
}

/* Header Multi-Tag Container & Popover Panel */
.vector-multi-tag-container {
    position: relative;
    display: inline-block;
}

.vector-multi-tag-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-sans);
    font-size: 13px;
    padding: 5px 10px;
    background-color: var(--mw-bg);
    border: 1px solid var(--mw-border);
    border-radius: 2px;
    color: var(--mw-text);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;
}

.vector-multi-tag-btn:hover, .vector-multi-tag-btn.active {
    background-color: var(--mw-button-hover);
    border-color: var(--mw-link);
}

.multi-tag-panel {
    width: 320px;
    max-height: 380px;
    overflow-y: auto;
    padding: 12px;
}

/* ArchWiki / Wikipedia Article Subheader Navigation Tabs */
.vector-article-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    border-bottom: 1px solid var(--mw-border-subtle);
    margin-bottom: 15px;
}

.vector-tabs {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 16px;
}

.vector-tabs li {
    margin: 0;
    padding: 0;
}

.vector-tabs li a {
    display: block;
    padding: 6px 0;
    font-size: 0.9em;
    color: var(--mw-link);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: border-color 0.15s, color 0.15s;
}

.vector-tabs li.active a {
    color: var(--mw-text);
    font-weight: normal;
    border-bottom-color: var(--mw-link);
}

.vector-tabs li a:hover {
    color: var(--mw-link-hover);
}


.tag-pill-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 0.85em;
    background-color: var(--mw-panel-bg);
    border: 1px solid var(--mw-border-subtle);
    border-radius: 2px;
    padding: 2px 6px;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.15s, border-color 0.15s;
    color: var(--mw-text);
}

.tag-pill-btn:hover {
    background-color: var(--mw-button-hover);
    border-color: var(--mw-link);
    color: var(--mw-link);
}

.tag-pill-btn.active-tag {
    background-color: var(--mw-link);
    color: #ffffff;
    border-color: var(--mw-link-hover);
}

.tag-count {
    font-size: 0.82em;
    opacity: 0.85;
}

/* InfoBox */
.mw-infobox {
    background-color: var(--mw-panel-bg);
    border: 1px solid var(--mw-border);
    padding: 12px 16px;
    margin-bottom: 20px;
    font-size: 0.92em;
}

.mw-infobox dl {
    margin: 8px 0 0 0;
    display: grid;
    grid-template-columns: max-content 1fr;
    grid-gap: 4px 16px;
}

.mw-infobox dt {
    font-weight: bold;
}

.mw-infobox dd {
    margin: 0;
}

footer.vector-footer {
    border-top: 1px solid var(--mw-border);
    margin-top: 40px;
    padding: 20px 0 40px 0;
    font-size: 0.88em;
    color: var(--mw-text-muted);
}

/* Tablet Responsive Rules (769px to 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .vector-main-layout {
        grid-template-columns: 210px 1fr !important;
        grid-gap: 24px;
        padding: 0 16px;
        margin: 15px auto;
    }

    body.toc-collapsed .vector-main-layout {
        grid-template-columns: 1fr !important;
    }

    /* Hide right appearance sidebar on tablet so main content has ample width */
    .vector-sidebar-appearance {
        display: none !important;
    }

    /* Show Appearance eyeglasses icon button on tablet header so user accesses popover */
    #vector-appearance-menu-btn {
        display: inline-flex !important;
    }

    .vector-search-input-wrapper input {
        width: 130px;
    }

    .vector-search-input-wrapper input:focus {
        width: 160px;
    }
}

/* Mobile Responsive Media Queries */
@media (max-width: 768px) {
    .vector-header-container {
        padding: 8px 10px;
        gap: 6px;
        flex-wrap: nowrap;
        justify-content: space-between;
    }

    .vector-header-left, .vector-header-right {
        gap: 6px;
    }

    .vector-brand h1 {
        font-size: 1.15em;
        white-space: nowrap;
    }

    /* Force Icon Buttons to display on mobile so popovers are accessible */
    .vector-icon-button {
        display: inline-flex !important;
        width: 32px;
        height: 32px;
        min-width: 32px;
    }

    .vector-search-input-wrapper {
        width: 100%;
        max-width: 130px;
    }

    .vector-search-input-wrapper input {
        width: 100%;
        font-size: 12px;
        padding-left: 24px;
    }

    .vector-search-box button {
        display: none; /* Hide Search submit button text on mobile, use search icon */
    }

    .vector-multi-tag-btn {
        padding: 4px 6px;
        font-size: 11px;
    }

    /* Hide Desktop Sidebars on mobile - users open them via header popover buttons */
    .vector-sidebar-contents,
    .vector-sidebar-appearance {
        display: none !important;
    }

    .vector-main-layout {
        grid-template-columns: 1fr !important;
        padding: 0 12px;
        margin: 10px auto;
    }

    /* Popover adjustments on mobile */
    .vector-popover {
        position: fixed;
        top: 50px;
        left: 10px;
        right: 10px;
        width: auto !important;
        max-width: calc(100vw - 20px);
        max-height: 80vh;
        z-index: 1000;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    }

    .vector-popover-right {
        left: 10px;
        right: 10px;
    }

    .vector-article-toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    article.mw-resource-article h3 {
        font-size: 1em;
        line-height: 1.4;
    }

    article.mw-resource-article footer {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .mw-bookmark-btn {
        margin-left: 0;
        margin-top: 4px;
    }
}