/* Origenality — Observatory as a folio of counts, not a dashboard.
   Scoped to body.obs so Method and Credits stay a reading page.
   Romain Girardi, 2026. */

.obs .lede{max-width:none}
.obs .lede > p{max-width:44rem}
.obs .lede h1{
  font-size:clamp(2.6rem,7vw,4.2rem);letter-spacing:-.018em;margin:0;
}

.census{
  display:flex;flex-direction:column;align-items:flex-start;gap:.35rem;
  margin:1.5rem 0 2.1rem;
}
.census[hidden]{display:none}
.census-n{
  font-family:var(--serif);font-weight:500;line-height:.88;
  font-size:clamp(4.4rem,16vw,8.4rem);letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;color:var(--ink);
}
.census-k{
  font-size:clamp(.95rem,1.6vw,1.12rem);color:var(--ink-2);letter-spacing:.01em;
}

.obs .lede .stamp{margin-top:1.6rem}

.obs section{margin-top:clamp(3.4rem,8vh,5.6rem)}
.obs section > h2{
  font-size:clamp(1.7rem,3.2vw,2.25rem);letter-spacing:-.012em;margin:0 0 .35rem;
}
.obs section > .sub{font-size:.9rem;max-width:42rem;margin:0 0 1.7rem}

/* figures sit on the cream, not in tiles */
.obs .card{
  background:transparent;border:0;border-radius:0;
  padding:1.15rem 0 0;border-top:1px solid var(--rule);
}
.obs .fig-h{margin:0 0 1.15rem}
.obs .fig-h h3{font-size:1.2rem;letter-spacing:-.01em}
.obs .fig-h .tot{font-size:.8rem}

/* three sets: one mass, then three numbers */
.sets-fig{margin-top:.4rem}
.sets-mass{
  display:flex;height:56px;width:100%;
  background:rgba(35,32,27,.06);overflow:hidden;
}
.sets-mass span{display:block;height:100%;min-width:0}
.sets-key{
  display:grid;grid-template-columns:1.35fr .95fr .95fr;gap:1.1rem 1.6rem;
  margin:1.25rem 0 0;
}
.set{display:flex;flex-direction:column;gap:.2rem;padding-top:.7rem;border-top:3px solid currentColor}
.set-v{
  font-family:var(--serif);font-weight:500;line-height:1;
  font-size:clamp(2rem,4.4vw,3.05rem);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--ink);
}
.set-k{font-size:.95rem;color:var(--ink);line-height:1.3}
.set-n{font-size:.8rem;color:var(--stone);line-height:1.45;max-width:22rem}

/* harvest register */
.reg{margin-top:.2rem;border-top:1px solid var(--rule)}
.reg-row{
  display:grid;grid-template-columns:8.6rem minmax(0,1fr);
  column-gap:1.3rem;row-gap:.12rem;
  padding:.95rem 0;border-bottom:1px solid var(--rule-soft);
}
.reg-v{
  grid-row:1 / span 2;align-self:center;
  font-family:var(--serif);font-weight:500;line-height:1;
  font-size:clamp(1.7rem,3vw,2.15rem);letter-spacing:-.015em;
  font-variant-numeric:tabular-nums;color:var(--ink);
}
.reg-k{font-size:.95rem;color:var(--ink);line-height:1.3;align-self:end}
.reg-n{font-size:.8rem;color:var(--stone);line-height:1.4}

/* decade histogram */
.obs .cols{
  align-items:stretch;height:auto;gap:.38rem;
  padding:0 0 .15rem;
}
.obs .cols .c{
  display:flex;flex-direction:column;justify-content:flex-end;
  gap:.28rem;min-width:0;
}
.obs .cols .plot{
  height:280px;display:flex;align-items:flex-end;
  border-bottom:1px solid var(--ink);
}
.obs .cols .c .st{
  display:flex;flex-direction:column-reverse;width:100%;
  border-radius:0;min-height:3px;
}
.obs .cols .c .vv{
  font-family:var(--serif);font-size:.78rem;color:var(--ink);
  font-variant-numeric:tabular-nums;margin-bottom:.2rem;
}
.obs .cols .c .lb{
  font-size:.68rem;color:var(--ink-2);letter-spacing:.01em;
  font-variant-numeric:tabular-nums;
}

/* bar rows: number first, measure under */
.obs .bars{gap:.95rem}
.obs .brow{
  grid-template-columns:minmax(0,1fr) auto;
  grid-template-areas:"lb vv" "tr tr";
  gap:.2rem .9rem .42rem;font-size:.9rem;
}
.obs .brow .lb{grid-area:lb;color:var(--ink)}
.obs .brow .lb small{font-size:.75rem}
.obs .brow .vv{
  grid-area:vv;font-family:var(--serif);font-size:1.2rem;font-weight:500;
  color:var(--ink);min-width:0;line-height:1;
}
.obs .brow .vv span{font-family:var(--text);font-size:.78rem;font-weight:400}
.obs .brow .tr{
  grid-area:tr;height:14px;border-radius:0;background:rgba(35,32,27,.07);
}
.obs .brow .fl{border-radius:0;background:var(--ink)}

.obs .band-key{margin-top:1rem;gap:.4rem 1.3rem}
.obs .band-key i{width:8px;height:8px;border-radius:0}

.obs #limits{margin-top:clamp(4rem,10vh,6.5rem);padding-top:1.4rem;border-top:1px solid var(--rule)}
.obs #limits ul{padding-left:1.05rem}
.obs #limits li{margin:0 0 .7rem}

.obs .note{margin-top:1.7rem}

@media (max-width:760px){
  .census{margin:1.15rem 0 1.6rem}
  .sets-mass{height:40px}
  .sets-key{grid-template-columns:1fr;gap:1.05rem}
  .reg-row{grid-template-columns:1fr;row-gap:.18rem;padding:.85rem 0}
  .reg-v{grid-row:auto}
  .obs .cols .plot{height:200px}
  .obs .cols{gap:.22rem}
  .obs .cols .c .vv{display:none}
  /* 11 px or more on a phone, one label in two so they do not collide (OR-77) */
  .obs .cols .c .lb{font-size:.7rem;overflow:visible}
  .obs .cols .c .lb-minor{visibility:hidden}
}

/* ------------------------------------------------------------------ crossings
   Three registers of counts, set like the rest of the folio. The shade behind a
   count follows its size and leads the eye along a row; the number stays in ink,
   which holds 4.5:1 on the darkest shade (checked in scripts/test_data_gates.py). */
.obs{--tint-max:.24}
.cross-tabs{display:flex;flex-wrap:wrap;gap:0 1.7rem;margin:0 0 1.5rem;border-bottom:1px solid var(--rule)}
.cross-tabs [role="tab"]{
  -webkit-appearance:none;appearance:none;background:none;border:0;border-radius:0;
  border-bottom:2px solid transparent;margin:0 0 -1px;padding:.4rem 0;min-height:44px;cursor:pointer;
  font-family:var(--serif);font-size:1.14rem;font-weight:500;letter-spacing:-.005em;color:var(--ink-2);
  transition:color .18s, border-color .18s;
}
.cross-tabs [role="tab"][aria-selected="true"]{color:var(--ink);border-bottom-color:var(--accent)}
@media (hover:hover){ .cross-tabs [role="tab"]:hover{color:var(--accent)} }
.cross-panel[hidden],.cross-leaves[hidden]{display:none}
.obs .cross-panel .tbl-cap{max-width:44rem;font-size:.84rem;margin:0 0 .6rem}
.cross-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;margin:0 0 .4rem}
.cross{border-collapse:collapse;width:100%;font-size:.84rem;font-variant-numeric:tabular-nums}
.cross th,.cross td{padding:.45rem .45rem;border-bottom:1px solid var(--rule-soft);vertical-align:baseline}
.cross thead th{
  font-family:var(--serif);font-weight:500;font-size:.86rem;line-height:1.2;color:var(--ink);
  text-align:right;vertical-align:bottom;border-bottom:1px solid var(--ink);padding-top:.2rem;
}
.cross thead th:first-child{text-align:left}
.cross th[scope="row"]{
  text-align:left;font-weight:400;color:var(--ink);min-width:11rem;max-width:16rem;line-height:1.3;
}
/* the first column holds still only when the table is wider than its box
   (observatory.js sets .overflows), so a table that fits carries no band */
.cross-wrap.overflows .cross th[scope="row"],
.cross-wrap.overflows .cross thead th:first-child{
  position:sticky;left:0;z-index:1;background:var(--ground);box-shadow:1px 0 0 var(--rule);
}
.cross-wrap.overflows .cross thead th:first-child{z-index:2}
.cross td{text-align:right;color:var(--ink);white-space:nowrap}
.cross td[style]{background:rgb(160 54 32 / calc(var(--t) * var(--tint-max)))}
.cross td.zero{color:var(--stone)}
.cross td.cross-tot{color:var(--ink-2);border-right:1px solid var(--rule-soft)}
.cross .cross-leaf th[scope="row"]{padding-left:1.75rem;color:var(--ink-2);font-size:.8rem}
.cross .cross-leaf td{font-size:.8rem}
.cross tfoot th,.cross tfoot td{border-top:1px solid var(--ink);border-bottom:0;color:var(--ink-2)}
.cross-toggle{
  -webkit-appearance:none;appearance:none;background:none;border:0;padding:.1rem 0;margin:0;cursor:pointer;
  font:inherit;color:inherit;text-align:left;display:inline-flex;align-items:baseline;gap:.5rem;
}
.cross-toggle::before{content:"+";color:var(--stone);display:inline-block;width:.6em;flex:0 0 auto}
.cross-toggle[aria-expanded="true"]::before{content:"–"}
@media (hover:hover){ .cross-toggle:hover{color:var(--accent)} }
.cross-dv{display:block}
.cross-ds,.cross-sh{display:block;font-size:.72rem;line-height:1.25}
.cross-ds{color:var(--stone)}
.cross-sh{color:var(--ink)}
.cross-base{display:block;margin-top:.15rem;font-family:var(--text);font-size:.72rem;font-weight:400;color:var(--stone)}
.obs .cross-h{font-size:1.2rem;margin:2.2rem 0 .45rem}
.cross-notes,.cross-list{list-style:none;padding:0;max-width:44rem}
.cross-notes{margin:1.1rem 0 0;border-top:1px solid var(--rule)}
.cross-notes li{margin:0;padding:.65rem 0;border-bottom:1px solid var(--rule-soft);font-size:.86rem;line-height:1.55;color:var(--ink-2)}
.cross-list{margin:.4rem 0 0}
.cross-list li{margin:0;padding:.55rem 0;border-bottom:1px solid var(--rule-soft);font-size:.92rem;line-height:1.5;color:var(--ink-2)}
.cross-list strong{font-weight:500;color:var(--ink)}
/* a table of linked counts is one key press to pass: the link shows when it
   has the focus, and lands on the notes under the table (U-5) */
.cross-skip{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.cross-skip:focus{position:static;width:auto;height:auto;overflow:visible;clip:auto;white-space:normal;
  display:inline-flex;align-items:center;min-height:44px;margin:0 0 .35rem;font-size:.86rem}
.cross-notes:focus{outline:none}
.cross-notes:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
/* a count opens the Explorer view that lists the same records */
.cross td a{color:inherit;text-decoration:none;border-bottom:1px solid rgb(160 54 32 / .34)}
@media (hover:hover){ .cross td a:hover{color:var(--accent);border-bottom-color:var(--accent)} }
.cross td a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:1px}
@media (pointer:coarse){ .cross-toggle{min-height:44px;align-items:center} }
@media (pointer:coarse){
  .cross td a{display:inline-flex;align-items:center;justify-content:flex-end;min-height:44px;min-width:44px;vertical-align:middle;
    border-bottom:0;text-decoration:underline;text-decoration-color:rgb(160 54 32 / .34);text-decoration-thickness:1px;text-underline-offset:.22em}
}
@media (max-width:760px){
  .cross-tabs{gap:0 1.15rem}
  .cross-tabs [role="tab"]{font-size:1.02rem}
  .cross th[scope="row"]{min-width:9.5rem;max-width:11rem}
  .cross .cross-leaf th[scope="row"]{padding-left:1rem}
}

@media (prefers-reduced-motion:reduce){
  .obs .brow .fl,.obs .cols .c .st{transition:none}
  .cross-tabs [role="tab"]{transition:none}
}