/* ==========================================================
   IPD 2026 — shared responsive layer
   Loaded LAST in every page's helmet so it can override the
   inline layout styles on small screens.

   The content pages wrap the sidebar + article in a grid div
   (sometimes id="pageGrid", sometimes not), so the layout is
   matched structurally.
   ========================================================== */

/* ---- universal safety: nothing overflows the viewport ---- */
html, body { max-width: 100%; overflow-x: clip; }
img, video, canvas, svg, iframe { max-width: 100%; }
img, video { height: auto; }
table { max-width: 100%; }

/* ==========================================================
   TABLET AND BELOW  (<= 1024px)
   ========================================================== */
@media (max-width: 1024px) {

  /* ---------- header ---------- */
  header > div {
    padding: 12px clamp(14px, 4vw, 26px) !important;
    min-height: 0 !important;
    gap: 8px 16px !important;
    align-items: center !important;
  }
  header nav {
    gap: 10px 16px !important;
    row-gap: 8px !important;
    font-size: 14px !important;
  }
  header nav a { padding-bottom: 2px !important; }
  header > div > a:first-child { font-size: 17px !important; }

  /* ---------- sidebar + article stack ---------- */
  :is(#pageGrid, div:has(> aside):has(> main)) {
    display: block !important;
    grid-template-columns: minmax(0, 1fr) !important;
  }
  /* the floating collapse control is meaningless once stacked */
  :is(#pageGrid, div:has(> aside):has(> main)) > button { display: none !important; }

  /* the sidebar becomes a swipeable chip rail above the article */
  :is(#pageGrid, div:has(> aside):has(> main)) > aside {
    display: block !important;
    width: 100% !important;
    min-height: 0 !important;
    opacity: 1 !important;
    border-right: 0 !important;
    border-bottom: 2px solid #7442bd !important;
    overflow: visible !important;
  }
  :is(#pageGrid, div:has(> aside):has(> main)) > aside > div {
    position: static !important;
    top: auto !important;
    padding: 12px clamp(14px, 4vw, 26px) 14px !important;
  }
  :is(#pageGrid, div:has(> aside):has(> main)) > aside p {
    margin: 0 0 9px !important;
    font-size: 11px !important;
    letter-spacing: 0.12em !important;
  }
  :is(#pageGrid, div:has(> aside):has(> main)) > aside p:not(:first-child) { margin-top: 14px !important; }

  :is(#pageGrid, div:has(> aside):has(> main)) > aside nav {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    gap: 8px !important;
    border-top: 0 !important;
    padding-bottom: 4px !important;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  :is(#pageGrid, div:has(> aside):has(> main)) > aside nav::-webkit-scrollbar { display: none; }
  :is(#pageGrid, div:has(> aside):has(> main)) > aside nav > a {
    flex: 0 0 auto !important;
    white-space: nowrap !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 7px !important;
    min-height: 44px !important;
    padding: 0 14px !important;
    border: 1px solid #d9c8ef !important;
    border-radius: 999px !important;
    background: #fff !important;
    font-size: 13.5px !important;
    line-height: 1.2 !important;
  }
  :is(#pageGrid, div:has(> aside):has(> main)) > aside nav > a > span:first-child {
    min-width: 0 !important;
    padding-top: 0 !important;
    font-size: 12px !important;
  }

  /* ---------- article column ---------- */
  .standard-main,
  :is(#pageGrid, div:has(> aside):has(> main)) > main {
    padding: 34px clamp(16px, 4.5vw, 30px) 70px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  /* number/label column stacks above its body column */
  :is(.standard-main, :is(#pageGrid, div:has(> aside):has(> main)) > main) section > div[style*="grid"] {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 14px !important;
  }
  :is(.standard-main, :is(#pageGrid, div:has(> aside):has(> main)) > main) section > div[style*="grid"] > div {
    max-width: 100% !important;
  }
  :is(.standard-main, :is(#pageGrid, div:has(> aside):has(> main)) > main) h1 {
    font-size: clamp(30px, 6.4vw, 44px) !important;
  }
  :is(.standard-main, :is(#pageGrid, div:has(> aside):has(> main)) > main) h2 br { display: none !important; }

  /* justified text creates rivers in a narrow column */
  p, li { text-align: left !important; }

  /* long URLs and formulae must not push the page wide */
  main a, main code { overflow-wrap: anywhere !important; }
}

/* ==========================================================
   PHONE  (<= 640px)
   ========================================================== */
@media (max-width: 640px) {

  header > div { gap: 6px 12px !important; padding: 10px 16px !important; }
  header > div > a:first-child { font-size: 15px !important; }
  header nav { font-size: 13px !important; gap: 8px 14px !important; }

  :is(#pageGrid, div:has(> aside):has(> main)) > aside { display: block !important; }

  .standard-main,
  :is(#pageGrid, div:has(> aside):has(> main)) > main { padding: 26px 16px 60px !important; }

  :is(.standard-main, :is(#pageGrid, div:has(> aside):has(> main)) > main) h1 {
    font-size: 29px !important;
    letter-spacing: -0.6px !important;
  }
  main section { padding-left: 0 !important; padding-right: 0 !important; }
  main section p { font-size: 16px !important; line-height: 1.68 !important; }

  /* auto-fit metric strips: one per row rather than squeezed columns */
  main div[style*="auto-fit"] { grid-template-columns: minmax(0, 1fr) !important; }

  /* justified text creates rivers in a narrow column */
  p, li { text-align: left !important; }

  /* wide tables scroll instead of squashing */
  main table {
    display: block !important;
    overflow-x: auto !important;
    width: 100% !important;
  }
  main th, main td {
    overflow-wrap: anywhere !important;
    padding-left: 8px !important;
    padding-right: 8px !important;
    font-size: 14px !important;
  }

  /* stack the prev/next pager */
  main > div:last-child[style*="justify-content:space-between"] {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 14px !important;
  }

  /* decorative art behind headings must not extend past the edge */
  main div[style*="z-index:-1"], main div[style*="z-index: -1"] {
    right: 0 !important;
    width: 100% !important;
  }

  /* keep the floating action clear of the thumb zone */
  #funFactButton,
  main ~ button[style*="position:fixed"] {
    right: 16px !important;
    bottom: 18px !important;
    width: 56px !important;
    height: 56px !important;
  }
}