/*
 * Mobile compatibility layer for the preserved 2016 Vector skin.
 * Everything that changes the historical layout is scoped below 768px.
 */
.archive-mobile-header,
.archive-mobile-backdrop,
.archive-mobile-close {
  display: none;
}

@media screen and (max-width: 767px) {
  :root {
    --archive-mobile-accent: #158cba;
    --archive-mobile-border: #a7d7f9;
    --archive-mobile-surface: #f6f6f6;
    --archive-mobile-ink: #252525;
    --archive-mobile-muted: #54595d;
    --archive-mobile-space-xs: 4px;
    --archive-mobile-space-sm: 8px;
    --archive-mobile-space-md: 12px;
    --archive-mobile-space-lg: 16px;
    --archive-mobile-space-xl: 24px;
    --archive-mobile-header-height: 48px;
    --archive-mobile-drawer-width: min(86vw, 320px);
    --archive-mobile-z-backdrop: 10010;
    --archive-mobile-z-drawer: 10020;
  }

  html {
    min-width: 0;
    overflow-x: clip;
    scroll-padding-top: calc(var(--archive-mobile-header-height) + var(--archive-mobile-space-md));
  }

  body.skin-vector {
    min-width: 0;
    color: var(--archive-mobile-ink);
    overflow-wrap: break-word;
  }

  body.skin-vector.archive-mobile-menu-open {
    overflow: hidden;
  }

  body.skin-vector #mw-page-base,
  body.skin-vector #mw-head-base,
  body.skin-vector #mw-head {
    display: none;
  }

  .archive-mobile-header {
    align-items: center;
    background: var(--archive-mobile-surface);
    border-bottom: 1px solid var(--archive-mobile-border);
    box-sizing: border-box;
    color: var(--archive-mobile-ink);
    display: flex;
    height: var(--archive-mobile-header-height);
    padding: 0 var(--archive-mobile-space-sm);
    position: sticky;
    top: 0;
    z-index: 200;
  }

  .archive-mobile-menu-button,
  .archive-mobile-close {
    align-items: center;
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 2px;
    box-sizing: border-box;
    color: var(--archive-mobile-ink);
    cursor: pointer;
    display: inline-flex;
    font: 600 0.875rem/1 "Helvetica Neue", Helvetica, Arial, sans-serif;
    gap: var(--archive-mobile-space-sm);
    justify-content: center;
    min-height: 44px;
    padding: 0 var(--archive-mobile-space-sm);
  }

  .archive-mobile-menu-button:hover,
  .archive-mobile-close:hover {
    background: #eaecf0;
    border-color: #c8ccd1;
  }

  .archive-mobile-menu-button:active,
  .archive-mobile-close:active {
    background: #d8dadd;
  }

  .archive-mobile-menu-button:focus-visible,
  .archive-mobile-close:focus-visible,
  body.skin-vector #mw-panel a:focus-visible,
  body.skin-vector #mw-panel input:focus-visible {
    outline: 2px solid #0645ad;
    outline-offset: 2px;
  }

  .archive-mobile-menu-icon {
    display: grid;
    gap: 4px;
    width: 20px;
  }

  .archive-mobile-menu-icon span {
    background: currentColor;
    display: block;
    height: 2px;
    width: 20px;
  }

  .archive-mobile-backdrop {
    background: rgba(0, 0, 0, 0.42);
    border: 0;
    display: block;
    inset: 0;
    opacity: 0;
    padding: 0;
    pointer-events: none;
    position: fixed;
    transition: opacity 160ms cubic-bezier(0.22, 1, 0.36, 1);
    visibility: hidden;
    z-index: var(--archive-mobile-z-backdrop);
  }

  body.skin-vector #mw-panel {
    background: var(--archive-mobile-surface);
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.24);
    box-sizing: border-box;
    display: block;
    height: 100vh;
    height: 100dvh;
    left: 0;
    max-width: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    padding: max(var(--archive-mobile-space-sm), env(safe-area-inset-top)) var(--archive-mobile-space-md) max(var(--archive-mobile-space-lg), env(safe-area-inset-bottom));
    position: fixed;
    top: 0 !important;
    transform: translateX(-105%);
    transition: transform 180ms cubic-bezier(0.22, 1, 0.36, 1), visibility 0s linear 180ms;
    visibility: hidden;
    width: var(--archive-mobile-drawer-width);
    z-index: var(--archive-mobile-z-drawer);
  }

  body.skin-vector.archive-mobile-menu-open #mw-panel {
    transform: translateX(0);
    transition: transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
    visibility: visible;
  }

  body.skin-vector.archive-mobile-menu-open .archive-mobile-backdrop {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
  }

  body.skin-vector #mw-panel .archive-mobile-close {
    display: inline-flex;
    font-size: 1.5rem;
    margin-left: auto;
    position: absolute;
    right: var(--archive-mobile-space-sm);
    top: max(var(--archive-mobile-space-sm), env(safe-area-inset-top));
    width: 44px;
  }

  body.skin-vector #mw-panel #p-logo {
    display: none;
  }

  body.skin-vector #mw-panel #p-search {
    float: none;
    margin: 48px 0 var(--archive-mobile-space-md);
    padding: 0;
    position: static;
    width: 100%;
  }

  body.skin-vector #mw-panel #p-search h3 {
    clip: rect(1px, 1px, 1px, 1px);
    height: 1px;
    overflow: hidden;
    position: absolute;
    width: 1px;
  }

  body.skin-vector #mw-panel #simpleSearch {
    background: #fff;
    border: 1px solid #a2a9b1;
    box-sizing: border-box;
    height: 44px;
    max-width: none;
    width: 100%;
  }

  body.skin-vector #mw-panel #searchInput {
    box-sizing: border-box;
    font-size: 1rem;
    height: 42px;
    padding: 8px 40px 8px 10px;
    width: 100%;
  }

  body.skin-vector #mw-panel .searchButton {
    height: 42px;
    min-width: 42px;
  }

  body.skin-vector #mw-panel div.portal {
    margin-bottom: var(--archive-mobile-space-sm);
    padding-bottom: 0;
  }

  body.skin-vector #mw-panel div.portal h3 {
    color: var(--archive-mobile-muted);
    font-size: 0.875rem !important;
    margin: var(--archive-mobile-space-md) var(--archive-mobile-space-xs) var(--archive-mobile-space-xs) !important;
  }

  body.skin-vector #mw-panel div.portal div.body,
  body.skin-vector #mw-panel div.portal div.body ul {
    margin: 0 !important;
    padding: 0 !important;
  }

  body.skin-vector #mw-panel div.portal div.body ul li {
    box-sizing: border-box;
    margin-bottom: 0 !important;
    min-height: 44px;
    padding-top: 0 !important;
  }

  body.skin-vector #mw-panel div.portal div.body ul li a {
    align-items: center;
    box-sizing: border-box;
    display: inline-flex;
    min-height: 44px;
    line-height: 1.25;
    padding: var(--archive-mobile-space-xs) 0;
  }

  body.skin-vector #mw-panel #p-Navigation li,
  body.skin-vector #mw-panel #p-Development li,
  body.skin-vector #mw-panel #p-Community li {
    background-position: var(--archive-mobile-space-xs) center !important;
    background-size: 18px auto !important;
  }

  body.skin-vector #mw-panel #p-Navigation li a,
  body.skin-vector #mw-panel #p-Development li a,
  body.skin-vector #mw-panel #p-Community li a {
    margin-left: 32px !important;
  }

  body.skin-vector #mw-panel #p-support .body {
    padding: 0 0 var(--archive-mobile-space-sm) !important;
  }

  body.skin-vector #mw-panel #p-support .body ul li a {
    align-items: center;
    box-sizing: border-box;
    display: inline-flex;
    justify-content: center;
    min-height: 44px;
  }

  body.skin-vector #content.mw-body {
    border-left: 0;
    border-right: 0;
    box-sizing: border-box;
    margin: 0;
    max-width: 100%;
    min-width: 0;
    padding: var(--archive-mobile-space-lg) var(--archive-mobile-space-md) var(--archive-mobile-space-xl);
    width: 100%;
  }

  body.skin-vector #firstHeading.mp_header {
    display: table;
    margin-bottom: var(--archive-mobile-space-lg);
    overflow: visible;
    width: 100%;
  }

  /* The archive's desktop main page intentionally suppresses this technical
   * page title; its welcome panel is the visible homepage heading. */
  body.skin-vector.page-Main_Page #firstHeading.mp_header {
    display: none;
  }

  body.skin-vector #firstHeading h1,
  body.skin-vector h1.firstHeading,
  body.skin-vector h1.firstheading {
    font-size: 1.75rem !important;
    overflow-wrap: anywhere;
  }

  body.skin-vector #mw-content-text {
    color: #555 !important;
    font-size: 1rem !important;
    line-height: 1.55;
    max-width: 100%;
    min-width: 0;
    overflow-wrap: anywhere;
  }

  body.skin-vector #mw-content-text h2 {
    font-size: 1.5rem !important;
  }

  body.skin-vector #mw-content-text h3 {
    font-size: 1.25rem !important;
  }

  body.skin-vector #mw-content-text img,
  body.skin-vector #mw-content-text video,
  body.skin-vector #mw-content-text iframe,
  body.skin-vector #mw-content-text object,
  body.skin-vector #mw-content-text embed {
    height: auto !important;
    max-width: 100% !important;
  }

  body.skin-vector #mw-content-text div.tright,
  body.skin-vector #mw-content-text div.tleft,
  body.skin-vector #mw-content-text div.floatright,
  body.skin-vector #mw-content-text div.floatleft {
    clear: both;
    float: none;
    margin: var(--archive-mobile-space-lg) auto;
    max-width: 100%;
  }

  body.skin-vector #mw-content-text .thumbinner,
  body.skin-vector #mw-content-text .thumbcaption {
    box-sizing: border-box;
    max-width: 100%;
  }

  body.skin-vector #mw-content-text table {
    display: block;
    float: none !important;
    max-width: 100% !important;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    width: 100% !important;
    -webkit-overflow-scrolling: touch;
  }

  /*
   * Archive index and landing pages often use presentation tables to arrange
   * `.panel` cards in two or three desktop columns. A scrollable table keeps
   * the page technically in bounds, but makes whole panels inaccessible on a
   * phone. Reflow just those panel grids into a single reading column; data
   * tables retain the scroll behavior above.
   */
  body.skin-vector #mw-content-text table:has(> tbody > tr > td > .panel) {
    overflow: visible;
  }

  body.skin-vector #mw-content-text table:has(> tbody > tr > td > .panel) > tbody,
  body.skin-vector #mw-content-text table:has(> tbody > tr > td > .panel) > tbody > tr,
  body.skin-vector #mw-content-text table:has(> tbody > tr > td > .panel) > tbody > tr > td {
    box-sizing: border-box;
    display: block;
    max-width: 100% !important;
    width: 100% !important;
  }

  body.skin-vector #mw-content-text table:has(> tbody > tr > td > .panel) > tbody > tr > td + td {
    margin-top: var(--archive-mobile-space-lg);
  }

  /* The main page places its welcome copy and social links in the first row
   * of the same table as the panel grid. Stack them above the panels so the
   * table cannot reserve a narrow second column for the social links. */
  body.skin-vector.page-Main_Page #mw-content-text > table:has(> tbody > tr > td > .panel) > tbody > tr:first-child > td {
    display: block;
    width: 100% !important;
  }

  body.skin-vector.page-Main_Page .mp-welcome-logged-out {
    display: flex;
    justify-content: flex-end;
    margin: 0 0 var(--archive-mobile-space-md);
    padding: 0;
  }

  body.skin-vector.page-Main_Page .mp-welcome-logged-out li {
    clear: none;
    float: none;
  }

  /* The general float reset above is right for article figures, but panel
   * title icons are metadata and belong in the header's top-right corner. */
  body.skin-vector #mw-content-text .panel .panel-header {
    padding-right: 48px;
    position: relative;
  }

  body.skin-vector #mw-content-text .panel .panel-header .floatright {
    clear: none;
    float: none;
    margin: 0 !important;
    position: absolute;
    right: 15px;
    top: 10px;
  }

  /* Article and summary pages also use the skin's flex-panel utility for
   * multi-column effect, category, and reference panels. Its desktop column
   * minimums are too wide for a phone, so give each column the full reading
   * width at the same breakpoint as the table-based panel grids. */
  body.skin-vector #mw-content-text .flex-panel {
    display: block;
  }

  body.skin-vector #mw-content-text .flex-panel > .flex-column {
    box-sizing: border-box;
    min-width: 0 !important;
    width: 100%;
  }

  body.skin-vector #mw-content-text .flex-panel > .flex-column > .panel {
    margin-left: 0;
    margin-right: 0;
  }

  body.skin-vector #mw-content-text #InfoTable {
    clear: both;
    display: table;
    float: none !important;
    margin: 0 0 var(--archive-mobile-space-xl) !important;
    max-width: 100% !important;
    table-layout: fixed;
    width: 100% !important;
  }

  body.skin-vector #mw-content-text #InfoTable table {
    display: table;
    max-width: 100% !important;
    table-layout: fixed;
    width: 100% !important;
  }

  body.skin-vector #mw-content-text #InfoTable th,
  body.skin-vector #mw-content-text #InfoTable td {
    box-sizing: border-box;
    overflow-wrap: anywhere;
  }

  body.skin-vector #mw-content-text pre,
  body.skin-vector #mw-content-text code,
  body.skin-vector #mw-content-text .mw-code {
    max-width: 100%;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
  }

  body.skin-vector #toc,
  body.skin-vector .toc {
    box-sizing: border-box;
    margin: var(--archive-mobile-space-lg) 0;
    max-width: 100%;
  }

  body.skin-vector #catlinks {
    box-sizing: border-box;
    max-width: 100%;
  }

  body.skin-vector #footer {
    box-sizing: border-box;
    margin: 0;
    padding: var(--archive-mobile-space-xl) var(--archive-mobile-space-md) max(var(--archive-mobile-space-xl), env(safe-area-inset-bottom));
    width: 100%;
  }

  body.skin-vector #footer ul,
  body.skin-vector #footer li {
    box-sizing: border-box;
    max-width: 100%;
  }

  body.skin-vector #footer-icons {
    float: none;
  }

  body.skin-vector #footer-icons li {
    float: none;
    margin: var(--archive-mobile-space-sm) 0;
  }

  .archive-suggest {
    box-sizing: border-box;
    left: 0 !important;
    max-width: 100%;
    min-width: 100% !important;
    right: 0;
  }
}

@media screen and (max-width: 767px) and (prefers-reduced-motion: reduce) {
  .archive-mobile-backdrop,
  body.skin-vector #mw-panel,
  body.skin-vector.archive-mobile-menu-open #mw-panel {
    transition: none;
  }
}

@media print {
  .archive-mobile-header,
  .archive-mobile-backdrop,
  .archive-mobile-close {
    display: none !important;
  }
}