/* Explore: the research rooms of the book website.
   Palette and type continue voynich-site/book/gallery.css and book.css. */

:root{
  --paper:#f5f5f0;
  --panel:#ffffff;
  --ink:#202b32;
  --muted:#52636f;
  --red:#a62520;
  --red-dark:#7f1b17;
  --rule:#c8d0d4;
  --rule-soft:#dfe4e5;
  --blue:#e2ebf1;
  --blue-deep:#e3ecf3;
  --green:#48663f;
  --azurite:#375d8c;
  --clay:#a5432a;
  --gold:#b3822f;
  --slate:#5f7d8c;
  --serif:"Baskerville","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --sans:"Avenir Next","Avenir",Verdana,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gutter:20px;
  --wrap:1640px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font:17px/1.6 var(--serif);
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p,figure,dl,dd{margin:0}
h1,h2,h3,h4{font-weight:400;line-height:1.08;letter-spacing:-.03em}
h1{font-size:clamp(38px,8vw,64px)}
h2{font-size:clamp(30px,5.2vw,46px)}
h3{font-size:clamp(21px,3vw,28px);letter-spacing:-.02em}
h4{font-size:19px;letter-spacing:-.01em}
p+p{margin-top:16px}
a{color:inherit;text-underline-offset:4px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button,a,summary,select,input{touch-action:manipulation}
:focus-visible{outline:3px solid var(--red);outline-offset:3px}
table{border-collapse:collapse}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.eyebrow{font:500 11px/1.6 var(--sans);text-transform:uppercase;letter-spacing:.18em;color:var(--muted);margin-bottom:14px}
.lede{font-size:20px;line-height:1.45}
.note{font:400 14px/1.55 var(--sans);color:var(--muted)}
.mono{font-family:var(--mono);font-size:13px;overflow-wrap:anywhere}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.skip-link{position:fixed;z-index:200;top:8px;left:12px;padding:12px 18px;background:#fff;
  font:500 14px var(--sans);text-decoration:none;transform:translateY(-200%)}
.skip-link:focus{transform:none}

/* ---------- shell ---------- */
.ex-header{position:sticky;top:0;z-index:60;background:rgba(245,245,240,.95);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.ex-header-inner{max-width:var(--wrap);margin:0 auto;padding:10px var(--gutter);
  display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.wordmark{font:500 12px/1.4 var(--serif);letter-spacing:.28em;text-transform:uppercase;
  text-decoration:none;margin-right:auto;padding:10px 0}
.nav-toggle{display:none;min-height:44px;padding:9px 14px;background:none;
  border:1px solid var(--rule);font:500 13px var(--sans)}
.ex-nav{display:flex;flex-wrap:wrap;gap:2px 18px;order:3;width:100%;
  border-top:1px solid var(--rule-soft);padding-top:8px}
.ex-nav a{font:500 14px/1.4 var(--sans);text-decoration:none;padding:11px 0;display:inline-block}
.ex-nav a:hover{color:var(--red)}
.ex-nav a[aria-current="page"]{color:var(--red);box-shadow:inset 0 -2px var(--red)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:14px;
  min-height:44px;padding:11px 18px;text-decoration:none;
  font:500 13px/1.3 var(--sans);border:1px solid transparent;background:none}
.button-red{background:var(--red);color:#fff}
.button-red:hover{background:var(--red-dark)}
.button-outline{border-color:var(--ink)}
.button-outline:hover{border-color:var(--red);color:var(--red)}
.text-link{display:inline-flex;align-items:center;gap:14px;background:none;border:0;
  border-bottom:1px solid currentColor;padding:8px 0;color:var(--red);
  font:500 13px/1.3 var(--sans);text-decoration:none}

main{display:block}
.ex-footer{margin-top:70px;border-top:1px solid var(--rule);background:var(--blue-deep)}
.ex-footer-inner{max-width:var(--wrap);margin:0 auto;padding:34px var(--gutter) 44px;
  display:grid;gap:14px}
.ex-footer a{font:500 14px var(--sans)}
.credits{font:400 12px/1.6 var(--sans);color:var(--muted)}

/* ---------- page furniture ---------- */
.page-head{padding:44px 0 30px}
.page-head p.lede{max-width:44em;margin-top:20px}
.section{padding:34px 0}
.section+.section{border-top:1px solid var(--rule-soft)}
.section-head{margin-bottom:22px}
.section-head p{margin-top:12px;max-width:44em}
.panel{background:var(--panel);border:1px solid var(--rule);padding:20px}
.panel-blue{background:var(--blue);border-color:#c3d5e0}
.panel+.panel{margin-top:16px}
.stack>*+*{margin-top:16px}

.notice{border-left:3px solid var(--muted);background:#fff;padding:14px 16px;
  font:400 14px/1.55 var(--sans)}
.notice h3,.notice h4{font:600 14px var(--sans);margin-bottom:6px;letter-spacing:0}
.notice-warn{border-left-color:var(--clay);background:#fbf3f0}
.notice-stale{border-left-color:var(--gold);background:#faf5ea}
.notice-ok{border-left-color:var(--green)}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{min-height:44px;padding:9px 14px;background:#fff;border:1px solid var(--rule);
  font:500 13px/1.3 var(--sans);color:var(--muted)}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.field{display:flex;flex-direction:column;gap:6px}
.field>span{font:500 12px var(--sans);text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
select,input[type=text],input[type=search]{min-height:44px;padding:9px 12px;
  background:#fff;border:1px solid var(--rule);font:400 15px var(--sans);max-width:100%}
.controls{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.pager{display:flex;gap:8px}
.pager button{min-height:44px;min-width:44px;padding:9px 16px;background:#fff;
  border:1px solid var(--rule);font:500 13px var(--sans)}
.pager button:hover{border-color:var(--ink)}
.pager button[disabled]{opacity:.45;cursor:default}

.data-table{width:100%;font:400 14px/1.4 var(--sans)}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
.data-table th,.data-table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--rule-soft);vertical-align:top}
.data-table th{font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);white-space:nowrap}
.data-table td.num{font-family:var(--mono);white-space:nowrap}
.data-table tr.is-focus{background:var(--blue)}

.kv{display:grid;grid-template-columns:1fr;gap:2px 16px;font:400 14px/1.5 var(--sans)}
.kv dt{font-weight:600;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.1em}
.kv dd{margin:0 0 10px;overflow-wrap:anywhere}

.tag{display:inline-block;padding:3px 8px;border:1px solid var(--rule);
  font:500 11px/1.5 var(--sans);text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.tag-red{border-color:var(--red);color:var(--red)}
.tag-green{border-color:var(--green);color:var(--green)}
.tag-blue{border-color:var(--azurite);color:var(--azurite)}
.tag-gold{border-color:var(--gold);color:#8a6318}

dialog{width:min(680px,94vw);max-height:86svh;overflow:auto;background:var(--paper);
  border:1px solid var(--rule);padding:22px;color:var(--ink)}
dialog::backdrop{background:rgba(24,36,42,.62)}
.dialog-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:16px}
.dialog-head h2{font-size:26px}
.close-dialog{width:44px;height:44px;border:1px solid var(--rule);background:none;font:400 24px var(--sans)}

/* ---------- explore hub ---------- */
.hub-hero{background:var(--blue-deep);border-bottom:1px solid var(--rule)}
.hub-hero-inner{max-width:var(--wrap);margin:0 auto;padding:48px var(--gutter) 52px}
.hub-hero h1{max-width:14em}
.hub-hero .lede{margin-top:22px;max-width:40em}
.hub-grid{display:grid;gap:22px;padding-top:34px}
.hub-card{background:#fff;border:1px solid var(--rule);display:flex;flex-direction:column}
.hub-card img{width:100%;height:190px;object-fit:cover;object-position:50% 22%;background:var(--blue)}
.hub-card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.hub-card h2{font-size:26px}
.hub-card p{font-size:16px}
.hub-card .text-link{margin-top:auto;align-self:flex-start}

/* ---------- manuscript reader ---------- */
.reader-layout{display:grid;gap:24px}
.folio-figure{background:#fff;border:1px solid var(--rule);padding:14px}
.folio-figure img{width:100%;max-height:70svh;object-fit:contain;background:#e8e2d2}
.folio-figure figcaption{font:400 13px/1.5 var(--sans);color:var(--muted);padding-top:12px}
.folio-empty{background:#fff;border:1px dashed var(--rule);padding:22px;font:400 14px/1.6 var(--sans)}
.folio-empty b{font-family:var(--mono);font-weight:400}
.transcription{background:#fff;border:1px solid var(--rule);padding:16px;
  max-height:none;font-family:var(--mono)}
.tline{display:flex;gap:10px;padding:4px 0;flex-wrap:wrap;border-bottom:1px solid #f0f2f1}
.tline-n{font:400 11px/1.9 var(--sans);color:var(--muted);min-width:56px;flex:0 0 auto}
.tline-words{display:flex;flex-wrap:wrap;gap:2px 0}
.w{background:none;border:0;padding:4px 3px;font:400 15px/1.5 var(--mono);border-radius:2px}
.w:hover{background:var(--blue)}
.w.sel{background:var(--red);color:#fff}
.w.kin{background:#f3e7c6}
.wordpanel{background:var(--blue);border:1px solid #c3d5e0;padding:18px}
.wordpanel h3{font-family:var(--mono);font-size:24px;letter-spacing:0}
.wordbits{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.wordbits span,.wordbits a{display:inline-block;padding:5px 8px;background:#fff;
  border:1px solid var(--rule);font:400 13px var(--mono);text-decoration:none}
.wordbits a:hover{border-color:var(--red);color:var(--red)}

/* ---------- maps ---------- */
.folio-map{width:100%;height:auto;display:block}
.folio-map .cell{cursor:pointer}
.folio-map .cell:hover{stroke:var(--ink);stroke-width:2}
.map-legend{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:14px;font:400 13px var(--sans)}
.map-legend span{display:inline-flex;align-items:center;gap:7px}
.map-legend i{width:13px;height:13px;display:inline-block;border:1px solid #0002}
.hand-cards{display:grid;gap:10px}
.hand-card{text-align:left;background:#fff;border:1px solid var(--rule);padding:12px 14px;min-height:44px}
.hand-card[aria-pressed="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.hand-card b{display:flex;align-items:center;gap:8px;font:600 14px var(--sans)}
.hand-card i{width:12px;height:12px;display:inline-block}
.hand-card span{display:block;font:400 12px var(--sans);color:var(--muted);margin-top:4px}
.hbar{height:5px;background:var(--rule-soft);margin-top:8px}
.hbar div{height:100%}

/* ---------- grammar ---------- */
.slot-board{display:flex;gap:6px;overflow-x:auto;padding-bottom:10px}
.slotcol{flex:0 0 auto;min-width:64px;background:#fff;border:1px solid var(--rule);padding:6px}
.slotno{display:block;font:500 10px var(--sans);color:var(--muted);text-align:center;padding-bottom:5px}
.sf{display:block;width:100%;min-height:34px;margin-bottom:3px;padding:5px 4px;background:#f7f8f7;
  border:1px solid var(--rule-soft);font:400 13px var(--mono);position:relative;text-align:center}
.sf i{position:absolute;left:0;top:0;bottom:0;background:var(--blue);z-index:0}
.sf b{position:relative;z-index:1;font-weight:400}
.sf[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.sf[aria-pressed="true"] i{background:#ffffff30}
.snull{display:block;text-align:center;font:400 10px var(--sans);color:var(--muted);padding-top:4px}
.compose-out{font-family:var(--mono);font-size:18px}
.ribbon{display:flex;flex-wrap:wrap;gap:4px;margin-top:12px}
.rslot{display:inline-flex;flex-direction:column;align-items:center;min-width:34px;
  border:1px solid var(--rule-soft);background:#fff;padding:4px 6px}
.rslot.fill{border-color:var(--ink);background:var(--blue)}
.rslot em{font:400 10px var(--sans);color:var(--muted);font-style:normal}
.rslot b{font:400 14px var(--mono)}

/* ---------- tests ---------- */
.bar-cell{display:block;height:8px;background:var(--rule-soft);min-width:120px;position:relative}
.bar-cell i{display:block;height:100%;background:var(--slate)}
.bar-cell.g-vms i{background:var(--red)}
.bar-cell.g-nat i{background:var(--green)}
.bar-cell.g-ct i{background:var(--azurite)}
.bar-cell.g-pt i{background:#8fb0cd}
.bar-cell.g-con i{background:var(--gold)}
.group-dot{display:inline-block;width:9px;height:9px;margin-right:7px;vertical-align:1px}
.g-vms .group-dot,.dot-vms{background:var(--red)}
.g-nat .group-dot,.dot-nat{background:var(--green)}
.g-ct .group-dot,.dot-ct{background:var(--azurite)}
.g-pt .group-dot,.dot-pt{background:#8fb0cd}
.g-gen .group-dot,.dot-gen{background:var(--muted)}
.g-con .group-dot,.dot-con{background:var(--gold)}
.compare-box{background:var(--blue);border:1px solid #c3d5e0;padding:16px;font:400 15px/1.5 var(--sans)}
.compare-box b{font-family:var(--mono);font-weight:400}
.row-btn{background:none;border:0;padding:0;font:inherit;text-align:left;text-decoration:underline;
  text-underline-offset:3px;min-height:24px}
.pick{min-height:38px;min-width:38px;padding:6px 10px;background:#fff;border:1px solid var(--rule);
  font:500 12px var(--sans)}
.pick[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}

/* ---------- timeline ---------- */
.timeline{list-style:none;margin:0;padding:0;border-left:2px solid var(--rule)}
.tl-item{position:relative;padding:0 0 26px 22px}
.tl-item::before{content:"";position:absolute;left:-9px;top:6px;width:16px;height:16px;
  background:#fff;border:3px solid var(--muted);border-radius:50%}
.tl-item.phase-production::before{border-color:var(--green)}
.tl-item.phase-early-use::before{border-color:var(--slate)}
.tl-item.phase-ownership::before{border-color:var(--azurite)}
.tl-item.phase-modern::before{border-color:#5c5340}
.tl-item.approx::before{border-style:dashed}
.tl-date{font:600 13px var(--sans);letter-spacing:.02em}
.tl-actor{font-size:19px;margin:3px 0 6px}
.tl-item p{font-size:16px}
.tl-src{font:400 12px/1.5 var(--sans);color:var(--muted);margin-top:8px;overflow-wrap:anywhere}
.tl-item.is-target{background:var(--blue);box-shadow:0 0 0 10px var(--blue)}

/* ---------- articles ---------- */
.paper-grid{display:grid;gap:18px}
.paper-card{background:#fff;border:1px solid var(--rule);padding:20px;display:flex;flex-direction:column;gap:10px}
.paper-card h3{font-size:23px}
.paper-card .sub{font-size:16px;color:var(--muted)}
.paper-card .claim{font:400 15px/1.5 var(--sans);border-left:2px solid var(--rule);padding-left:12px}
.paper-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:6px}
.reader-shell{display:grid;gap:26px}
.reader-toc{font:400 14px/1.5 var(--sans)}
.reader-toc ol{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:2px}
.reader-toc a{display:block;padding:7px 0;text-decoration:none;color:var(--muted)}
.reader-toc a:hover{color:var(--red)}
.paper-body{font-size:18px;line-height:1.62;max-width:38em}
.paper-body h2{font-size:clamp(24px,3.4vw,32px);margin:38px 0 14px}
.paper-body h3{font-size:21px;margin:28px 0 10px}
.paper-body p{margin-top:14px}
.paper-body ol,.paper-body ul{margin:14px 0;padding-left:22px}
.paper-body li{margin-top:8px}
.paper-body table{font:400 14px/1.45 var(--sans);width:100%;min-width:520px}
.paper-body th,.paper-body td{border-bottom:1px solid var(--rule-soft);padding:9px 10px;text-align:left;vertical-align:top}
.paper-body figure{margin:20px 0}
.paper-body figcaption{font:400 13px/1.5 var(--sans);color:var(--muted);padding-top:8px}
.paper-body .figure-missing{border:1px dashed var(--rule);padding:14px;font:400 14px/1.5 var(--sans);color:var(--muted)}
.paper-body a{overflow-wrap:anywhere}
.paper-meta{background:var(--blue);border:1px solid #c3d5e0;padding:18px}

/* ---------- sources ---------- */
.registry{display:grid;gap:20px}
.source-list{display:grid;gap:8px}
.source-btn{text-align:left;background:#fff;border:1px solid var(--rule);padding:12px 14px;min-height:44px}
.source-btn[aria-pressed="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.source-btn b{display:block;font:600 14px var(--sans)}
.source-btn span{display:block;font:400 12px var(--mono);color:var(--muted);margin-top:4px;overflow-wrap:anywhere}
.sample-cells{font:400 13px/1.6 var(--mono)}
.sample-cells div{padding:6px 0;border-bottom:1px solid var(--rule-soft);overflow-wrap:anywhere}

/* ---------- tablet ---------- */
@media (min-width:700px){
  :root{--gutter:34px}
  body{font-size:18px}
  .ex-header-inner{padding:12px var(--gutter);flex-wrap:nowrap}
  .ex-nav{order:0;width:auto;border-top:0;padding-top:0;gap:0 20px;flex-wrap:wrap;justify-content:flex-end}
  .wordmark{margin-right:20px}
  .page-head{padding:56px 0 34px}
  .section{padding:44px 0}
  .hub-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .kv{grid-template-columns:180px 1fr}
  .kv dd{margin-bottom:4px}
  .hand-cards{grid-template-columns:repeat(2,1fr)}
  .paper-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{padding-left:4px}
  .tl-item{padding-left:28px}
}

/* ---------- large tablet / small desktop ---------- */
@media (min-width:900px){
  .reader-layout{grid-template-columns:minmax(280px,0.85fr) 1.15fr;align-items:start}
  .reader-side{position:sticky;top:104px}
  .split{display:grid;grid-template-columns:1.4fr 1fr;gap:26px;align-items:start}
  .split-wide{display:grid;grid-template-columns:1fr 340px;gap:26px;align-items:start}
  .registry{grid-template-columns:320px minmax(0,1fr);align-items:start}
  .source-list{position:sticky;top:104px;max-height:calc(100svh - 150px);overflow:auto}
  .reader-shell{grid-template-columns:250px minmax(0,1fr);gap:40px}
  .reader-toc{position:sticky;top:104px;max-height:calc(100svh - 140px);overflow:auto}
  .transcription{max-height:74svh;overflow:auto}
}

/* ---------- desktop ---------- */
@media (min-width:1200px){
  :root{--gutter:56px}
  body{font-size:18px}
  .hub-grid{grid-template-columns:repeat(3,1fr)}
  .paper-grid{grid-template-columns:repeat(3,1fr)}
  .hand-cards{grid-template-columns:repeat(5,1fr)}
  .page-head{padding:70px 0 40px}
  .hub-hero-inner{padding:76px var(--gutter) 80px}
  .reader-shell{grid-template-columns:280px minmax(0,1fr)}
}

@media (min-width:1500px){
  :root{--gutter:80px}
}

/* ---------- phone navigation disclosure (script-enabled only) ---------- */
@media (max-width:699px){
  .js .nav-toggle{display:inline-flex;align-items:center}
  .js .ex-nav{display:none}
  .js .ex-nav.is-open{display:flex;flex-direction:column;gap:0}
  .js .ex-nav.is-open a{border-bottom:1px solid var(--rule-soft);width:100%}
  .back-to-book{padding:11px 12px;gap:8px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}

@media print{
  .ex-header,.ex-footer,.skip-link,dialog{display:none!important}
  body{font-size:11pt}
}

/* Acceptance refinements: compact shell and usable map cells. */
[hidden]{display:none!important}
.folio-map-scroll{max-width:100%;overflow-x:auto;padding-bottom:12px;overscroll-behavior-x:contain}
.folio-map-scroll .folio-map{display:block}
.wordbits button{margin-top:8px}
.wordmark{min-height:44px;display:inline-flex;align-items:center}
@media(max-width:699px){
 .ex-header-inner{gap:8px}
 .wordmark{font-size:11px;letter-spacing:.12em;margin-right:auto;white-space:nowrap}
 .nav-toggle{padding:9px 10px}
 .back-to-book{padding:10px;gap:5px}
}
@media(max-width:359px){
 .ex-header-inner{padding-left:12px;padding-right:12px}
 .wordmark{font-size:10px;letter-spacing:.04em}
 .back-to-book span{display:none}
}

.controls>.field{min-width:0;max-width:100%;flex:0 1 auto}
.controls select,.controls input{min-width:0;width:100%}
.paper-body .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:8px 0}
.reader-shell>*{min-width:0}
@media(max-width:699px){.controls>.field{flex:1 1 100%}}
.paper-body,.paper-body code,.paper-body pre{overflow-wrap:anywhere}
.paper-body pre{white-space:pre-wrap}
.page-head h1{overflow-wrap:anywhere}

.reader-toc summary,.paper-meta summary{cursor:pointer;font:500 14px/1.5 var(--sans);min-height:44px;padding:11px 0}
.paper-meta{padding:8px 18px;margin-bottom:24px}
.paper-meta[open]{padding-bottom:18px}
@media(min-width:900px){.reader-toc summary{display:none}}