/* =========================================================
   Archive pages (news.html, publications.html):
   hero filter bar, results/years rail, year-grouped lists.
   ========================================================= */
[hidden] { display: none !important; }

/* ---------------------------------------------------------
   Filter bar (lives in the page hero; needs JS to work)
   --------------------------------------------------------- */
.filters { display: none; }
.js .filters { display: grid; gap: 14px; }
.pub-summary + .filters { margin-top: 30px; }

.fsearch { position: relative; max-width: 560px; }
.fsearch > svg {
  position: absolute; left: 17px; top: 50%; transform: translateY(-50%);
  z-index: 1; width: 18px; height: 18px; pointer-events: none;
  fill: none; stroke: var(--text-3); stroke-width: 1.8; stroke-linecap: round;
}
.fsearch input {
  width: 100%; min-height: 50px; margin: 0; padding: 0 50px 0 46px;
  border-radius: 999px; border: 1px solid var(--line-2);
  background: rgb(var(--surface-rgb) / .5); color: var(--text);
  font: 500 16px/1.2 var(--font-body);
  -webkit-appearance: none; appearance: none;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: border-color .2s ease, background-color .2s ease, box-shadow .2s ease;
}
.fsearch input::placeholder { color: var(--text-3); opacity: 1; }
.fsearch input::-webkit-search-cancel-button,
.fsearch input::-webkit-search-decoration { -webkit-appearance: none; appearance: none; }
.fsearch input:hover { border-color: rgb(var(--cyan-rgb) / .4); }
.fsearch input:focus { background: rgb(var(--surface-rgb) / .72); }
.fsearch input:focus-visible {
  outline: 2px solid transparent; border-radius: 999px;
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgb(var(--cyan-rgb) / .22);
}
.fsearch-clear {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 36px; height: 36px; padding: 0; border: 0; border-radius: 50%;
  display: grid; place-items: center;
  background: transparent; color: var(--text-3); cursor: pointer;
  transition: color .2s ease, background-color .2s ease;
}
.fsearch-clear:hover { color: var(--text); background: rgb(var(--cyan-rgb) / .1); }
.fsearch-clear:focus-visible { border-radius: 50%; outline-offset: 0; }
.fsearch-clear svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

.fchips { display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; margin: 0; padding: 0; border: 0; }
.fchip {
  --c: var(--text-2);
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 38px; margin: 0; padding: 0 14px; border-radius: 999px;
  border: 1px solid var(--line-2);
  background: rgb(var(--surface-rgb) / .38);
  color: var(--text-2);
  font: 500 12px/1 var(--font-mono); letter-spacing: .07em; text-transform: uppercase;
  cursor: pointer; -webkit-user-select: none; user-select: none;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease, opacity .2s ease;
}
.fchip--all { --c: var(--text); }
.fchip--cyan { --c: var(--cyan); }
.fchip--violet { --c: var(--violet); }
.fchip--amber { --c: var(--amber); }
.fchip--muted { --c: var(--text-2); }
.fchip-dot { width: 6px; height: 6px; flex: none; border-radius: 50%; background: var(--c); box-shadow: 0 0 6px var(--c); }
.fchip-n { color: var(--text-3); font-size: 11px; letter-spacing: .02em; font-variant-numeric: tabular-nums; }
.fchip:hover { color: var(--text); border-color: color-mix(in srgb, var(--c) 55%, transparent); }
.fchip[aria-pressed="true"],
.fchip:has(input:checked) {
  color: var(--text);
  border-color: color-mix(in srgb, var(--c) 72%, transparent);
  background: color-mix(in srgb, var(--c) 15%, transparent);
}
.fchip[aria-pressed="true"] .fchip-n,
.fchip:has(input:checked) .fchip-n { color: var(--c); }
.fchip:focus-visible,
.fchip:has(input:focus-visible) { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 999px; }
.fchip.is-zero:not(:has(input:checked)) { opacity: .5; }

/* Publications: stats + ADS link above the filters */
.pub-summary { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; }
.pstats.stat-strip { flex: 0 1 auto; min-width: 0; margin: 0; grid-template-columns: repeat(4, auto); }
.pstats .stat { padding-right: 28px; }
.pstats .stat-num { white-space: nowrap; }
.page-hero .section-lede a { color: var(--text); text-decoration-color: rgb(var(--cyan-rgb) / .5); text-underline-offset: 3px; }
.page-hero .section-lede a:hover { text-decoration-color: var(--cyan); }
.page-hero .section-lede em { font-style: italic; color: var(--text); }

/* ---------------------------------------------------------
   Body layout: results + year index rail, then year groups
   --------------------------------------------------------- */
.archive-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; }

.archive-results { margin: 0; font-family: var(--font-mono); font-size: 12px; letter-spacing: .07em; text-transform: uppercase; color: var(--text-3); }
.archive-results strong { color: var(--text); font-weight: 500; font-variant-numeric: tabular-nums; }
.archive-reset {
  margin: 0; padding: 2px 0; border: 0; border-bottom: 1px dashed rgb(var(--cyan-rgb) / .55);
  background: none; color: var(--cyan); cursor: pointer;
  font: 500 12px/1.4 var(--font-mono); letter-spacing: .04em;
}
.archive-reset:hover { border-bottom-style: solid; }

.yjump-title { margin: 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); }
.yjump ol { list-style: none; margin: 0; padding: 0; }
.yjump a {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
  font-family: var(--font-mono); font-size: 13px; color: var(--text-2); text-decoration: none;
  font-variant-numeric: tabular-nums;
  transition: color .2s ease, background-color .2s ease, border-color .2s ease;
}
.yjump a:hover { color: var(--text); background: rgb(var(--cyan-rgb) / .08); }
.yjump-n { font-size: 11px; color: var(--text-3); }
.archive-aside .legend { margin: 0; }

/* Wide screens: sticky rail on the right */
@media (min-width: 1100px) {
  .archive-layout { grid-template-columns: minmax(0, 1fr) 150px; gap: 64px; align-items: start; }
  .archive { grid-column: 1; grid-row: 1; }
  .archive-aside {
    grid-column: 2; grid-row: 1;
    position: sticky; top: calc(var(--header-h) + 28px);
    max-height: calc(100vh - var(--header-h) - 48px); overflow-y: auto; overscroll-behavior: contain;
    scrollbar-width: thin;
    /* room for focus outlines inside the scrolling rail */
    margin: -6px; padding: 6px;
  }
  .archive-status { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
  .archive-results strong {
    display: block; margin-bottom: 2px;
    font-family: var(--font-display); font-weight: 600; font-size: 2.1rem; line-height: 1.1; letter-spacing: -.045em;
  }
  .archive-reset { margin-top: 10px; }
  .yjump { margin-top: 18px; }
  .yjump-title { margin-bottom: 8px; padding-left: 10px; }
  .yjump ol { display: grid; gap: 1px; }
  .yjump a { padding: 2px 10px; border-radius: 8px; line-height: 1.55; }
  .archive-aside .legend { margin-top: 16px; padding-left: 2px; }
}

/* Narrow screens: a toolbar above the list, years scroll sideways */
@media (max-width: 1099.98px) {
  .archive-aside {
    display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px;
    padding-bottom: 20px; border-bottom: 1px solid var(--line);
  }
  .archive-status { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 18px; margin-right: auto; }
  .archive-aside .legend { order: 2; }
  .yjump { order: 3; flex: 1 1 100%; min-width: 0; display: flex; align-items: center; gap: 14px; }
  .yjump ol {
    flex: 1; min-width: 0; display: flex; gap: 6px;
    overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: none;
    padding: 5px 4px;
    -webkit-mask-image: linear-gradient(90deg, #000 calc(100% - 36px), transparent);
    mask-image: linear-gradient(90deg, #000 calc(100% - 36px), transparent);
  }
  .yjump ol::-webkit-scrollbar { display: none; }
  .yjump li { flex: none; }
  .yjump li:last-child { padding-right: 28px; }
  .yjump a { padding: 5px 12px; border: 1px solid var(--line-2); border-radius: 999px; }
  .yjump a:focus-visible { border-radius: 999px; outline-offset: 1px; }
  .yjump-n { display: none; }
}

/* ---------------------------------------------------------
   Year groups
   --------------------------------------------------------- */
.ygroup:not([hidden]) ~ .ygroup { margin-top: 44px; padding-top: 44px; border-top: 1px solid var(--line); }
.ygroup-year {
  margin: 0;
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(1.5rem, 1rem + 2.2vw, 2.7rem); line-height: 1; letter-spacing: -.045em;
  font-variant-numeric: tabular-nums;
}
.ygroup-year:focus { outline: none; }
.ygroup-count { margin: 10px 0 0; font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); font-variant-numeric: tabular-nums; }

@media (min-width: 861px) {
  .ygroup { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 40px; }
  .ygroup-head { position: sticky; top: calc(var(--header-h) + 28px); align-self: start; }
  .ygroup-head::after { content: ""; display: block; width: 38px; height: 1px; margin-top: 16px; background: var(--grad); }
}
@media (max-width: 860px) {
  .ygroup:not([hidden]) ~ .ygroup { margin-top: 36px; padding-top: 0; border-top: 0; }
  .ygroup-head {
    position: sticky; top: var(--header-h); z-index: 3;
    display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
    margin: 0 calc(-1 * var(--gutter)) 22px; padding: 12px var(--gutter) 11px;
    background: rgb(var(--bg-rgb) / .88);
    -webkit-backdrop-filter: saturate(150%) blur(14px); backdrop-filter: saturate(150%) blur(14px);
    border-block: 1px solid var(--line);
  }
  .ygroup-count { margin: 0; }
}

/* News timeline inside year groups */
.archive .timeline::before { bottom: 6px; }
.archive .ygroup + .ygroup .timeline::before {
  background: linear-gradient(180deg, var(--cyan), var(--violet) 72%, rgb(var(--violet-rgb) / .12));
}
.archive .tl-item { max-width: 74ch; padding-bottom: 0; }
.archive .tl-item:not([hidden]) ~ .tl-item { margin-top: 30px; }
.tl-text a:not(.arxiv) { color: var(--text); text-decoration-color: rgb(var(--cyan-rgb) / .5); text-underline-offset: 3px; }
.tl-text a:not(.arxiv):hover { text-decoration-color: var(--cyan); }

/* Publication lists inside year groups (the year is in the group label) */
.archive--pubs .pub { grid-template-columns: minmax(0, 1fr); border-top: 0; padding: 2px 0 0; }
.archive--pubs .pub:not([hidden]) ~ .pub { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
.archive--pubs .pub-year { display: none; }
.archive--pubs .pub > div { max-width: 80ch; }
/* Long journal/book references must wrap on phones (.tag is nowrap by default). */
.archive--pubs li.tag { white-space: normal; overflow-wrap: anywhere; }

/* "Copy citation" (added by publications.js) */
.pub-copy {
  gap: 6px; margin: 0; cursor: pointer;
  border-style: dashed; background: transparent; color: var(--text-3);
  -webkit-appearance: none; appearance: none;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease, opacity .2s ease;
}
.pub-copy svg { width: 12px; height: 12px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.pub-copy:hover { color: var(--cyan); border-color: rgb(var(--cyan-rgb) / .5); border-style: solid; }
.pub-copy.is-done { color: var(--cyan); border-color: rgb(var(--cyan-rgb) / .5); border-style: solid; background: rgb(var(--cyan-rgb) / .08); }
.pub-copy:focus-visible { border-radius: 7px; }
@media (hover: hover) and (pointer: fine) {
  .pub .pub-copy { opacity: 0; }
  .pub:hover .pub-copy, .pub:focus-within .pub-copy, .pub-copy.is-done { opacity: 1; }
}

/* Empty state */
.archive-empty {
  padding: clamp(40px, 6vw, 64px) 24px; border-radius: 22px; text-align: center;
  border: 1px dashed var(--line-2); background: rgb(var(--surface-rgb) / .25);
}
.archive-empty-title { margin: 0 0 8px; font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; letter-spacing: -.02em; }
.archive-empty-sub { margin: 0 auto 22px; max-width: 46ch; color: var(--text-2); }
.archive-empty-sub a { color: var(--cyan); text-underline-offset: 3px; }

/* Search matches (CSS Custom Highlight API, where supported) */
::highlight(archive-match) { background-color: rgb(var(--amber-rgb) / .32); color: var(--text); }

@media (max-width: 760px) {
  .pstats.stat-strip { flex-basis: 100%; grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .fchip { min-height: 36px; padding: 0 12px; font-size: 11.5px; }
  .fchips { gap: 6px; }
}

/* Collaboration papers (publications page) */
.collab .section-head { margin-bottom: 28px; }
.collab-list { border: 1px solid var(--line); border-radius: 16px; background: rgb(var(--surface-rgb) / .35); }
.collab-list > summary {
  cursor: pointer; padding: 18px 22px; list-style: none;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .03em; color: var(--cyan);
}
.collab-list > summary::-webkit-details-marker { display: none; }
.collab-list > summary::before { content: "+"; display: inline-block; width: 1.2em; }
.collab-list[open] > summary::before { content: "−"; }
.collab-list > summary:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 16px; }
.collab-year {
  margin: 0; padding: 18px 22px 6px; border-top: 1px solid var(--line);
  font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; letter-spacing: -.02em;
}
.collab-year span { margin-left: 8px; font-family: var(--font-mono); font-size: 11px; font-weight: 400; color: var(--text-3); }
.collab-list ul { list-style: none; margin: 0; padding: 0 22px 16px; }
.collab-list li { padding: 9px 0; border-top: 1px solid var(--line); }
.collab-list li:first-child { border-top: 0; }
.collab-list li a { color: var(--text); text-decoration: none; font-weight: 500; }
.collab-list li a:hover { color: var(--cyan); }
.collab-ref { display: block; margin-top: 3px; font-family: var(--font-mono); font-size: 11.5px; color: var(--text-3); overflow-wrap: anywhere; }