/* ═══════════════════════════════════════════════════════════════════════════
   ZTF SKY CELLS — survey view browser
   ---------------------------------------------------------------------------
   Design language is deliberately shared with showcase/index.html and
   showcase/about.html: same token names, same typography, same nav, same card
   idiom, so this reads as the third page in that family.

   It shares the LOOK ONLY. showcase/ describes an invented observatory; every
   number here comes from ui/data/survey/*.json, exported from our real ZTF
   pipeline. No fictional branding, site, or statistic appears on this page.

   Two themes, matching the family:
     night  → operations console, deep-space dark
     plate  → photographic glass-plate negative, warm paper archive
   ═══════════════════════════════════════════════════════════════════════════ */
:root{
  --bg:#04060c;
  --bg-2:#080d18;
  --ink:#e8edf8;
  --ink-2:#96a1bb;
  --ink-3:#59647e;
  --line:rgba(160,185,235,.16);
  --line-2:rgba(160,185,235,.075);
  --cy:#7ae2ff;
  --am:#ff8a3d;
  --vi:#a68bfa;
  --gr:#5ff2b4;
  --card:rgba(11,17,30,.58);
  --card-2:rgba(11,17,30,.86);
  --shadow:0 30px 80px -30px rgba(0,0,0,.9);
  --scrim:rgba(4,6,12,.72);
  --sel:rgba(122,226,255,.28);

  --ff-d:'Archivo','Helvetica Neue',Arial,sans-serif;
  --ff-m:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  --gut:clamp(18px,4.2vw,72px);
  --maxw:1480px;
  --e-out:cubic-bezier(.16,1,.3,1);
  --e-io:cubic-bezier(.76,0,.24,1);
}
html[data-theme="plate"]{
  --bg:#e9e3d6;
  --bg-2:#ded6c5;
  --ink:#14120c;
  --ink-2:#453f2f;
  --ink-3:#5f5847;
  --line:rgba(30,26,14,.22);
  --line-2:rgba(30,26,14,.1);
  --cy:#0e6b7d;
  --am:#a8410c;
  --vi:#59379c;
  --gr:#1d6b46;
  --card:rgba(246,242,232,.72);
  --card-2:rgba(246,242,232,.93);
  --shadow:0 30px 70px -34px rgba(60,48,20,.5);
  --scrim:rgba(233,227,214,.74);
  --sel:rgba(14,107,125,.22);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;overflow-x:hidden}
body{
  color:var(--ink);
  font-family:var(--ff-d);
  font-variation-settings:'wdth' 100,'wght' 400;
  font-size:16px;line-height:1.55;
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background .5s var(--e-out),color .5s var(--e-out);
  background:
    radial-gradient(1100px 680px at 74% 12%,color-mix(in srgb,var(--vi) 12%,transparent),transparent 62%),
    radial-gradient(880px 640px at 12% 78%,color-mix(in srgb,var(--cy) 10%,transparent),transparent 60%),
    var(--bg);
  background-attachment:fixed;
}
::selection{background:var(--sel);color:var(--ink)}
img,svg,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,h5,p,figure,figcaption,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cy);outline-offset:3px}

/* ── utility type ──────────────────────────────────────────────────────── */
.mono{font-family:var(--ff-m);font-weight:400;letter-spacing:.08em;text-transform:uppercase}
.tag{font-family:var(--ff-m);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3)}
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
.skip{
  position:absolute;left:-9999px;top:0;z-index:130;
  font-family:var(--ff-m);font-size:10px;letter-spacing:.2em;text-transform:uppercase;
  background:var(--bg);border:1px solid var(--cy);color:var(--cy);padding:12px 18px;
}
.skip:focus{left:var(--gut);top:12px}

/* ── ambient film grain + scanlines (family signature, pure CSS) ───────── */
.overlay-fx{position:fixed;inset:0;z-index:6;pointer-events:none;mix-blend-mode:overlay;opacity:.4}
.overlay-fx::after{
  content:'';position:absolute;inset:-50%;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}
.scan{
  position:fixed;inset:0;z-index:5;pointer-events:none;opacity:.3;
  background:repeating-linear-gradient(to bottom,rgba(255,255,255,.035) 0 1px,transparent 1px 3px);
  mix-blend-mode:soft-light;
}
html[data-theme="plate"] .overlay-fx{mix-blend-mode:multiply;opacity:.3}
html[data-theme="plate"] .scan{opacity:.14;mix-blend-mode:multiply}

/* ═════════ NAV ═════════ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:40;
  display:flex;align-items:center;gap:18px;
  padding:16px var(--gut);
  border-bottom:1px solid transparent;
  transition:background .4s,backdrop-filter .4s,border-color .4s;
}
.nav.stuck{
  background:color-mix(in srgb,var(--bg) 74%,transparent);
  backdrop-filter:blur(16px) saturate(1.2);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  border-bottom-color:var(--line-2);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand svg{width:22px;height:22px;overflow:visible}
.brand .b-cell{fill:none;stroke:var(--cy);stroke-width:1.3}
.brand .b-dot{fill:var(--am)}
/* the homepage "array" glyph — same mark, so every page's brand reads identically */
.brand .b-r{fill:none;stroke:var(--cy);stroke-width:1.3}
.brand .b-c{fill:var(--am)}
.brand .b-x{stroke:var(--cy);stroke-width:1.3}
.brand-txt{font-family:var(--ff-m);font-size:11px;letter-spacing:.28em;text-transform:uppercase;line-height:1}
.brand-txt small{display:block;font-size:8.5px;letter-spacing:.2em;color:var(--ink-3);margin-top:3px}
.nav-links{display:flex;gap:2px;margin-left:auto}
.nav-links a{
  font-family:var(--ff-m);font-size:10px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink-2);padding:7px 12px;position:relative;transition:color .3s;
}
.nav-links a span{position:relative;z-index:1}
.nav-links a::after{
  content:'';position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:var(--cy);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .45s var(--e-out);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.on::after{transform:scaleX(1)}
.nav-links a.on{color:var(--ink)}
.tab{display:inline-flex;align-items:center;gap:8px}
.tab-app{
  border:1px solid var(--line);border-radius:2px;
  color:var(--cy);padding:7px 13px;margin-left:8px;
  background:color-mix(in srgb,var(--cy) 6%,transparent);
  transition:color .3s,border-color .3s,background .3s;
}
.tab-app::after{display:none}
.tab-app:hover{color:var(--bg);border-color:var(--cy);background:var(--cy)}
.tab-app svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.6;
  stroke-linecap:round;transition:transform .4s var(--e-out)}
.tab-app:hover svg{transform:translateX(3px)}
.tab-app .live{
  width:5px;height:5px;border-radius:50%;background:var(--gr);flex:0 0 auto;
  box-shadow:0 0 0 0 var(--gr);animation:pulse 2.2s infinite;
}
.tab-app:hover .live{background:var(--bg);box-shadow:none}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--gr) 70%,transparent)}
  70%{box-shadow:0 0 0 9px transparent}
  100%{box-shadow:0 0 0 0 transparent}
}
.tab-app .t-short{display:none}
.ctrl{display:flex;gap:8px;align-items:center;margin-left:14px}
.btn-i{
  width:34px;height:34px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:2px;color:var(--ink-2);
  transition:border-color .3s,color .3s,background .3s;
}
.btn-i:hover{border-color:var(--cy);color:var(--cy);background:color-mix(in srgb,var(--cy) 8%,transparent)}
.btn-i svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round}

/* Which tabs survive which width is decided ONCE, in ../site-nav.css, so the
   header is identical on every page that carries it. Only spacing lives here. */
@media (max-width:900px){
  .nav-links{display:flex;margin-left:auto}
  .tab-app{margin-left:0}
  .nav-links a{padding:7px 9px}
}
@media (max-width:560px){
  .tab-app .t-long{display:none}
  .tab-app .t-short{display:inline}
  .tab-app{padding:7px 11px;gap:7px}
  .brand-txt small{display:none}
}
/* below this the wordmark has to go or the tabs run into the controls */
@media (max-width:470px){ .brand-txt{display:none} }
/* 390px: without this the .ctrl button is pushed past the right edge — an
   invisible, unclickable overlap that does NOT show up as a scroll. */
@media (max-width:420px){
  .nav{gap:6px}
  .nav-links{gap:0}
  .nav-links a{padding:6px 6px}
  .tab-app{padding:6px 8px;gap:5px;margin-left:4px}
  .ctrl{margin-left:6px;gap:4px}
  .btn-i{width:28px;height:28px}
}

/* ═════════ SHELL ═════════ */
main{position:relative;z-index:1}
/* the nav is fixed: without this an anchor jump hides the target under it */
section[id]{scroll-margin-top:86px}
.pad{padding-block:clamp(34px,5vh,64px)}
.rv{opacity:0;transform:translate3d(0,22px,0);transition:opacity .8s var(--e-out),transform .95s var(--e-out)}
.rv.in{opacity:1;transform:none}
.rv[data-d="1"]{transition-delay:.08s}
.rv[data-d="2"]{transition-delay:.16s}
.rv[data-d="3"]{transition-delay:.24s}

/* ═════════ HERO ═════════ */
.hero{padding-top:clamp(102px,15vh,168px);padding-bottom:clamp(22px,4vh,44px);position:relative}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;z-index:-1;
  background-image:linear-gradient(90deg,var(--line-2) 1px,transparent 1px);
  background-size:calc(100%/6) 100%;opacity:.6;
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 22%,#000 78%,transparent);
          mask-image:linear-gradient(to bottom,transparent,#000 22%,#000 78%,transparent);
}
.hero-top{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:clamp(22px,4vh,54px)}
.hero-top .tag{line-height:1.7}
.hero h1{
  font-size:clamp(38px,7.4vw,104px);line-height:.88;letter-spacing:-.042em;
  font-variation-settings:'wght' 760,'wdth' 88;margin-bottom:clamp(16px,2.2vw,26px);
}
.hero h1 em{font-style:normal;color:var(--am)}
.hero-body{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(20px,4vw,60px);align-items:end}
.hero-lede{max-width:52ch;color:var(--ink-2);font-size:clamp(14px,1.1vw,17.5px);line-height:1.6}
.hero-lede strong{color:var(--ink);font-variation-settings:'wght' 600}
.hero-meta{display:grid;gap:1px;background:var(--line-2);border:1px solid var(--line)}
.hero-meta div{
  background:color-mix(in srgb,var(--bg) 72%,transparent);padding:10px 14px;
  display:flex;justify-content:space-between;gap:14px;align-items:baseline;
}
.hero-meta dt{font-family:var(--ff-m);font-size:9px;letter-spacing:.2em;color:var(--ink-3);text-transform:uppercase}
.hero-meta dd{font-family:var(--ff-m);font-size:12.5px;color:var(--ink);font-variant-numeric:tabular-nums}
@media (max-width:860px){.hero-body{grid-template-columns:1fr}}

/* ═════════ DISCLOSURE — the honesty statement ═════════ */
.truth{
  display:grid;grid-template-columns:150px minmax(0,1fr);gap:clamp(14px,3vw,40px);align-items:start;
  border:1px solid var(--line);border-left:2px solid var(--am);
  background:var(--card);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  padding:clamp(18px,2.6vw,32px);
}
.truth-k{display:flex;align-items:center;gap:12px}
.truth-k .tag{color:var(--am);white-space:nowrap}
.truth-k i{flex:1;height:1px;background:var(--am);opacity:.4}
.truth h2{
  font-size:clamp(19px,2.4vw,30px);line-height:1.08;letter-spacing:-.028em;
  font-variation-settings:'wght' 640,'wdth' 92;margin-bottom:12px;
}
.truth p{color:var(--ink-2);font-size:clamp(13px,1vw,15.5px);line-height:1.62;max-width:74ch}
.truth p + p{margin-top:10px}
.truth strong{color:var(--ink);font-variation-settings:'wght' 600}
@media (max-width:720px){.truth{grid-template-columns:1fr;gap:14px}.truth-k i{display:none}}

/* ═════════ THE VIEW TAB GRID ═════════ */
.vhead{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;flex-wrap:wrap;margin-bottom:16px}
.vhead h2{
  font-size:clamp(20px,2.6vw,32px);line-height:1.05;letter-spacing:-.028em;
  font-variation-settings:'wght' 620,'wdth' 92;
}
/* Explicit column counts, not auto-fit: eight tabs on an auto-fit grid leave a
   half-empty orphan row at some widths. 8 / 4 / 2 always divide cleanly. */
.tabgrid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--line-2);border:1px solid var(--line);
}
@media (min-width:1250px){.tabgrid{grid-template-columns:repeat(8,minmax(0,1fr))}}
@media (max-width:640px){.tabgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.vtab{
  background:color-mix(in srgb,var(--bg) 84%,transparent);
  padding:13px 14px 12px;text-align:left;position:relative;
  display:grid;gap:7px;transition:background .35s,color .35s;
}
.vtab::after{
  content:'';position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--cy);
  transform:scaleX(0);transform-origin:0 50%;transition:transform .5s var(--e-out);
}
.vtab:hover{background:color-mix(in srgb,var(--cy) 7%,transparent)}
.vtab:hover::after{transform:scaleX(.35)}
.vtab[aria-selected="true"]{background:color-mix(in srgb,var(--cy) 11%,transparent)}
.vtab[aria-selected="true"]::after{transform:scaleX(1)}
.vtab-l{
  font-family:var(--ff-m);font-size:9.5px;letter-spacing:.19em;text-transform:uppercase;
  color:var(--ink-3);transition:color .35s;line-height:1.4;
}
.vtab[aria-selected="true"] .vtab-l{color:var(--cy)}
.vtab-n{
  font-family:var(--ff-m);font-size:21px;line-height:1;color:var(--ink-2);
  font-variant-numeric:tabular-nums;transition:color .35s;
}
.vtab[aria-selected="true"] .vtab-n{color:var(--ink)}
.vtab-n.is-zero{color:var(--ink-3)}

/* the authored note that ships with every view */
.vnote{
  border:1px solid var(--line-2);border-left:2px solid var(--cy);
  background:color-mix(in srgb,var(--cy) 4%,transparent);
  padding:13px 16px;margin-top:18px;
  color:var(--ink-2);font-size:13.5px;line-height:1.6;max-width:96ch;
}
.vcount{
  margin-top:12px;font-family:var(--ff-m);font-size:10px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--ink-3);
}
.vcount b{color:var(--ink-2);font-weight:400}
.vcount .warn{color:var(--am)}

/* ═════════ CARD GRID ═════════ */
.cards{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));
  gap:clamp(10px,1.3vw,16px);margin-top:clamp(16px,2vw,24px);
}
.cards.wide{grid-template-columns:repeat(auto-fill,minmax(340px,1fr))}
@media (max-width:560px){.cards,.cards.wide{grid-template-columns:1fr}}
.card{
  border:1px solid var(--line);background:var(--card);
  position:relative;overflow:hidden;text-align:left;width:100%;
  transition:border-color .35s,background .35s,transform .35s var(--e-out);
}
.card-body{padding:14px 15px 13px;display:flex;flex-direction:column;gap:10px}

/* ── the difference-image thumbnail every cell card carries ─────────────── */
.cell-thumb{
  position:relative;width:100%;overflow:hidden;background:#000;
  border-bottom:1px solid var(--line);aspect-ratio:1021/1024;
}
.cell-thumb-l{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;image-rendering:pixelated}
.cell-thumb-ov{mix-blend-mode:screen}
.cell-thumb-tag{
  position:absolute;right:6px;bottom:6px;font-family:var(--ff-m);font-size:8px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink);
  background:color-mix(in srgb,var(--bg) 70%,transparent);border:1px solid var(--line);
  padding:2px 6px;
}
.cell-thumb-empty{
  aspect-ratio:1021/1024;display:flex;align-items:center;justify-content:flex-start;gap:8px;
  padding:16px;text-align:left;color:var(--ink-3);font-size:11.5px;line-height:1.5;
  background:color-mix(in srgb,var(--bg-2) 60%,transparent);border-bottom:1px solid var(--line);
}
.cell-thumb-empty .m{color:var(--am);flex:0 0 auto;font-family:var(--ff-m);font-size:13px}
.card::after{
  content:'';position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--cy);
  transform:scaleX(0);transform-origin:0 50%;transition:transform .6s var(--e-out);
}
a.card,button.card{cursor:pointer}
a.card:hover,button.card:hover{border-color:color-mix(in srgb,var(--cy) 55%,var(--line));transform:translateY(-2px)}
a.card:hover::after,button.card:hover::after{transform:scaleX(1)}
.card-h{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.card-t{
  font-family:var(--ff-m);font-size:12.5px;letter-spacing:.02em;color:var(--ink);
  word-break:break-all;line-height:1.35;
}
.card-t.big{
  font-family:var(--ff-d);font-size:19px;letter-spacing:-.02em;
  font-variation-settings:'wght' 620,'wdth' 94;word-break:normal;
}
.card-sub{font-family:var(--ff-m);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}
.kv{display:grid;gap:1px;background:var(--line-2);border-top:1px solid var(--line-2)}
.kv > div{
  background:color-mix(in srgb,var(--bg) 55%,transparent);padding:5px 8px;
  display:flex;justify-content:space-between;gap:10px;align-items:baseline;
}
.kv dt,.kv .k{font-family:var(--ff-m);font-size:8.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap}
.kv dd,.kv .v{
  font-family:var(--ff-m);font-size:11.5px;color:var(--ink-2);
  font-variant-numeric:tabular-nums;text-align:right;
}
.kv .v.hi{color:var(--ink)}
/* margin-top:auto pins the foot to the bottom, so feet line up across a row
   even though the cards carry a different number of optional fields. */
.card-foot{
  font-family:var(--ff-m);font-size:9px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink-3);border-top:1px solid var(--line-2);padding-top:9px;margin-top:auto;
  display:flex;justify-content:space-between;gap:10px;align-items:center;
}
a.card:hover .card-foot,button.card:hover .card-foot{color:var(--cy)}

/* ── badges: class, novelty, branch state ───────────────────────────────── */
.badge{
  font-family:var(--ff-m);font-size:8.5px;letter-spacing:.16em;text-transform:uppercase;
  border:1px solid currentColor;padding:2px 6px;white-space:nowrap;line-height:1.5;flex:0 0 auto;
}
.badge[data-cls="recovery"]{color:var(--gr)}
.badge[data-cls="candidate"]{color:var(--am)}
.badge[data-cls="verdict"]{color:var(--vi)}
.badge[data-cls="unchecked"]{color:var(--ink-3)}
.badge[data-cls="cell"]{color:var(--cy)}

.n-known{color:var(--gr)}
.n-novel{color:var(--am)}
.n-unchecked{color:var(--ink-3)}   /* neutral by mandate: unknown, not a candidate */
.n-none,.notrun{color:var(--ink-3);font-style:italic}
.warnline{
  display:flex;gap:10px;align-items:flex-start;
  border:1px solid var(--line-2);border-left:2px solid var(--am);
  background:color-mix(in srgb,var(--am) 5%,transparent);
  padding:11px 13px;color:var(--ink-2);font-size:12.5px;line-height:1.55;
}
.warnline b{color:var(--ink);font-variation-settings:'wght' 600}
.warnline .m{color:var(--am);flex:0 0 auto;font-family:var(--ff-m);font-size:12px}
.card .warnline{font-size:11.5px;padding:8px 10px}

.empty{
  border:1px dashed var(--line);padding:clamp(20px,3vw,34px);margin-top:20px;
  display:grid;gap:10px;justify-items:start;
}
.empty h3{font-size:17px;letter-spacing:-.015em;font-variation-settings:'wght' 600,'wdth' 94}
.empty p{color:var(--ink-3);font-size:13.5px;line-height:1.6;max-width:62ch}

/* ═════════ CELL DETAIL ═════════ */
#viewBody,#expPanel,#epDetections{scroll-margin-top:96px}
.back{
  font-family:var(--ff-m);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--ink-3);border:1px solid var(--line);padding:8px 13px;
  transition:color .3s,border-color .3s;justify-self:start;
}
.back:hover{color:var(--cy);border-color:var(--cy)}
.detail{margin-top:clamp(16px,2vw,24px);display:grid;gap:clamp(14px,2vw,22px)}
.detail-id h3{
  font-family:var(--ff-m);font-size:clamp(17px,2.4vw,26px);letter-spacing:.02em;
  color:var(--ink);line-height:1.1;
}
.detail-id .card-sub{margin-top:7px}
.idgrid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:1px;background:var(--line-2);border:1px solid var(--line);
}
.idgrid > div{
  background:color-mix(in srgb,var(--bg) 78%,transparent);padding:11px 13px;display:grid;gap:5px;
}
.idgrid .k{font-family:var(--ff-m);font-size:8.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3)}
.idgrid .v{font-family:var(--ff-m);font-size:13px;color:var(--ink);font-variant-numeric:tabular-nums;word-break:break-word}
.stitle{
  font-family:var(--ff-m);font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--am);
  border-top:1px solid var(--line);padding-top:14px;
}
.hint{color:var(--ink-3);font-size:13px;line-height:1.6;max-width:80ch}
.hint b{color:var(--ink-2);font-weight:400;font-family:var(--ff-m);font-size:12px}
.hint a{color:var(--cy);text-decoration:underline;text-underline-offset:2px;transition:color .3s}
.hint a:hover{color:var(--ink)}

/* ── epoch timeline: cards positioned by obsjd, lanes to avoid overlap ─── */
.tl-wrap{
  overflow-x:auto;overflow-y:hidden;padding-bottom:6px;
  border:1px solid var(--line-2);background:color-mix(in srgb,var(--bg-2) 45%,transparent);
}
/* The track only exceeds its container when stacking every epoch into lanes
   would make the column absurdly tall. When it does, SAY so — an unsignalled
   horizontal scroll just looks like clipped content. */
.tl-scrollnote{
  font-family:var(--ff-m);font-size:9px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--am);margin-top:8px;
}
@media (max-width:560px){.ep{width:132px}}
.tl-track{position:relative;margin:14px 10px 12px}
.tl-base{position:absolute;left:0;right:0;top:6px;height:1px;background:var(--line)}
.tl-tick{position:absolute;top:2px;width:1px;height:9px;background:var(--cy);opacity:.5}
.ep{
  position:absolute;width:150px;
  border:1px solid var(--line);background:color-mix(in srgb,var(--bg) 82%,transparent);
  padding:8px 9px;display:grid;gap:4px;text-align:left;
  transition:border-color .3s,background .3s,transform .3s var(--e-out);
}
.ep:hover{border-color:var(--cy);transform:translateY(-2px);background:color-mix(in srgb,var(--cy) 8%,transparent)}
.ep[aria-pressed="true"]{border-color:var(--cy);background:color-mix(in srgb,var(--cy) 14%,transparent)}
.ep-t{font-family:var(--ff-m);font-size:11px;color:var(--ink);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.ep-f{font-family:var(--ff-m);font-size:9px;color:var(--ink-3);letter-spacing:.06em}
.ep-c{font-family:var(--ff-m);font-size:10px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.ep-c b{color:var(--ink);font-weight:400}
.ep-c .short{color:var(--am)}

/* ── drill-down: one exposure's detections ─────────────────────────────── */
.dettable{width:100%;border-collapse:collapse;font-family:var(--ff-m);font-size:11.5px}
.dettable th{
  text-align:left;font-size:8.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);
  font-weight:400;padding:7px 9px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.dettable td{padding:7px 9px;border-bottom:1px solid var(--line-2);color:var(--ink-2);vertical-align:top}
.dettable tbody tr:hover td{background:color-mix(in srgb,var(--cy) 6%,transparent)}
.dettable td.id{color:var(--ink);white-space:nowrap}
.dettable td.n{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.dettable tr.mark td{background:color-mix(in srgb,var(--am) 12%,transparent)}
.tbl-scroll{overflow-x:auto;border:1px solid var(--line-2)}

/* ═════════ FOOTER ═════════ */
/* Same footer design as the showcase pages (see showcase/about.html) — one
   visual system across the whole site: 4-column grid, large wordmark, the
   same type scale and rhythm. Only the column CONTENT differs per page. */
footer{
  border-top:1px solid var(--line);margin-top:clamp(40px,6vw,80px);
  padding-block:clamp(34px,5vw,64px) 30px;
  background:color-mix(in srgb,var(--bg) 88%,transparent);
}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,.8fr));gap:clamp(20px,3vw,48px)}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid h5{font-family:var(--ff-m);font-size:9px;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-3);margin-bottom:14px}
.foot-grid li{margin-bottom:8px}
.foot-grid li a{font-size:13.5px;color:var(--ink-2);transition:color .3s;position:relative}
.foot-grid li a:hover{color:var(--cy)}
.foot-mark{font-size:clamp(30px,4.4vw,60px);line-height:.9;letter-spacing:-.04em;font-variation-settings:'wght' 700,'wdth' 80}
.foot-mark small{
  display:block;font-size:11px;letter-spacing:.24em;color:var(--ink-3);margin-top:14px;
  font-family:var(--ff-m);font-variation-settings:'wght' 400,'wdth' 100;text-transform:uppercase;line-height:1.7;
}
.foot-note{margin-top:16px;color:var(--ink-2);font-size:13px;line-height:1.6;max-width:60ch}
.foot-note strong{color:var(--ink);font-variation-settings:'wght' 600}
.foot-bot{
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  margin-top:clamp(34px,5vw,64px);padding-top:20px;border-top:1px solid var(--line-2);
  font-family:var(--ff-m);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);
}

/* ═════════ FILE:// GUARD ═════════ */
#fileGate{
  position:fixed;inset:0;z-index:120;display:grid;place-items:center;
  background:color-mix(in srgb,var(--bg) 80%,transparent);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);padding:var(--gut);
}
#fileGate[hidden]{display:none}
.fg-card{
  width:min(560px,100%);background:var(--card-2);border:1px solid var(--line);
  padding:clamp(22px,3.2vw,34px);box-shadow:var(--shadow);display:grid;gap:14px;
}
.fg-card h3{font-size:clamp(18px,2.1vw,25px);line-height:1.14;letter-spacing:-.02em;font-variation-settings:'wght' 600,'wdth' 94}
.fg-card p{color:var(--ink-2);font-size:13.5px;line-height:1.6}
.fg-card code{font-family:var(--ff-m);font-size:.92em;color:var(--cy)}
.fg-cmd{display:flex;align-items:center;gap:10px;border:1px solid var(--line);padding:11px 13px;
  background:color-mix(in srgb,var(--cy) 5%,transparent)}
.fg-cmd code{flex:1;font-size:13px;color:var(--ink)}
.fg-btn{
  font-family:var(--ff-m);font-size:10px;letter-spacing:.2em;text-transform:uppercase;
  border:1px solid var(--cy);color:var(--cy);padding:12px 20px;justify-self:start;
  transition:background .35s var(--e-out),color .35s;
}
.fg-btn:hover{background:var(--cy);color:var(--bg)}

/* view transition for the theme swap, matching the family */
::view-transition-old(root),::view-transition-new(root){animation:none;mix-blend-mode:normal}
::view-transition-old(root){z-index:1}
::view-transition-new(root){z-index:2}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .rv{opacity:1;transform:none}
}

/* ═══════════════════════════════════════════ the aligned image stack ══
   Two stacked layers (deep-reference sky, per-epoch change overlay) inside a
   pan/zoom viewport, with the detection markers in an UNSCALED layer above so
   zooming separates them rather than fattening them. */
.stk-view{
  position:relative;overflow:hidden;margin:14px 0 0;
  /* aspect-ratio is set inline from the baked grid; the cap keeps a tall
     quadrant from pushing the controls off-screen. Now used ONLY by the
     dedicated cell-viewer.html page (cell.html embeds a link, not the
     viewer itself), so this can afford to be much taller — full-page,
     not a panel squeezed next to other information. */
  max-height:min(88vh,1500px);max-width:100%;
  border:1px solid var(--line);border-radius:4px;
  background:#000;cursor:grab;touch-action:none;
}
.stk-view.grabbing{cursor:grabbing}
.stk-pan{position:absolute;left:0;top:0;transform-origin:0 0;will-change:transform}
.stk-img{
  position:absolute;left:0;top:0;width:100%;height:100%;
  /* the honest pixel: no browser smoothing between ZTF pixels */
  image-rendering:pixelated;-ms-interpolation-mode:nearest-neighbor;
}
.stk-ov{mix-blend-mode:screen}

.stk-marks{position:absolute;inset:0;pointer-events:none}
.stk-m{
  position:absolute;width:16px;height:16px;margin:-8px 0 0 -8px;padding:0;
  border:1px solid rgba(122,226,255,.75);border-radius:50%;
  background:transparent;cursor:pointer;pointer-events:auto;
  box-shadow:0 0 0 1px rgba(0,0,0,.55);
}
.stk-m.neg{border-color:rgba(255,255,255,.5)}
/* a fast-mover candidate is the one thing worth spotting from across the
   frame, so it gets size AND a different colour, not colour alone */
.stk-m.short{width:26px;height:26px;margin:-13px 0 0 -13px;border-width:2px;border-color:var(--am)}
.stk-m:hover,.stk-m:focus{border-color:#fff;outline:none;box-shadow:0 0 8px rgba(255,255,255,.6)}

.stk-tip{
  position:absolute;transform:translate(14px,-50%);pointer-events:none;
  background:var(--card-2);border:1px solid var(--line);border-radius:3px;
  padding:5px 9px;font-family:var(--ff-m);font-size:11px;color:var(--ink);
  white-space:nowrap;opacity:0;transition:opacity .12s;z-index:4;max-width:none;
}
.stk-tip.on{opacity:1}
.stk-tip b{color:var(--cy);font-weight:400}

.stk-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:10px}
.stk-bar2{margin-top:7px}
.stk-b,.stk-t{
  font-family:var(--ff-m);font-size:11px;letter-spacing:.06em;color:var(--ink-2);
  background:var(--card);border:1px solid var(--line);border-radius:3px;
  padding:6px 11px;cursor:pointer;transition:color .15s,border-color .15s;
}
.stk-b:hover,.stk-t:hover{color:var(--ink);border-color:var(--cy)}
.stk-play{min-width:92px;color:var(--cy)}
.stk-t[aria-pressed="false"]{color:var(--ink-3);opacity:.55}
.stk-range{flex:1 1 160px;min-width:120px;accent-color:var(--cy)}
.stk-op{flex:0 1 110px}
.stk-oplab{font-family:var(--ff-m);font-size:11px;color:var(--ink-3);letter-spacing:.06em}
.stk-label{font-family:var(--ff-m);font-size:11px;color:var(--ink-2);flex:1 1 100%}
.stk-label b{color:var(--ink);font-weight:400}
.stk-sub{color:var(--ink-3)}

.stk-legend{display:flex;flex-wrap:wrap;gap:16px;margin:12px 0 6px}
.stk-key{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;color:var(--ink-2);
  font-family:var(--ff-m);letter-spacing:.04em}
.stk-key .sw{width:11px;height:11px;border-radius:2px;display:inline-block}
.stk-key .sw.pos{background:#ffb047}
.stk-key .sw.neg{background:#5ec8ff}
.stk-key .sw.base{background:#c9d3e6}
.stk-key .sw.mk{background:transparent;border:1px solid rgba(122,226,255,.85);border-radius:50%}
.stk-prov{color:var(--ink-3);font-size:12px;line-height:1.65;max-width:90ch;margin-top:4px}
.stk-prov b{color:var(--ink-2);font-weight:400}
.stk-prov code{font-family:var(--ff-m);font-size:11px;color:var(--cy)}

@media (max-width:700px){
  .stk-view{max-height:min(56vh,440px)}
  .stk-label{font-size:10.5px}
}

/* Detection rows open the shared cutout drawer (survey-detail.js) — say so. */
.dettable tbody tr { cursor: pointer; }
.dettable tbody tr:hover { background: color-mix(in srgb, var(--cy) 9%, transparent); }
.dettable tbody tr:focus-visible { outline: 1px solid var(--cy); outline-offset: -1px; }