/* 6T Nexusverse — layout: left rail navigation + single working stage; dark-first observatory palette */
:root{
  --bg:#07111d; --bg2:#0c1a2a; --panel:#102236; --line:#1f3550; --fg:#e7eef7; --mute:#8fa3bb;
  --accent:#f2b84b; --accent2:#5aa9ff; --ok:#3fd0b4; --warn:#f2b84b; --bad:#ff7a6b;
  --f-display:"Bricolage Grotesque","Avenir Next","Segoe UI",system-ui,sans-serif;
  --f-body:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --r:10px; color-scheme:dark;
}
@media (prefers-color-scheme: light){:root:not([data-theme="dark"]){
  --bg:#f3f6fa; --bg2:#e8eef5; --panel:#ffffff; --line:#cfdae6; --fg:#0c1a2a; --mute:#4d6079;
  --accent:#a86a00; --accent2:#1f63c4; --ok:#0f8a74; --warn:#a86a00; --bad:#c2412f; color-scheme:light }}
:root[data-theme="light"]{
  --bg:#f3f6fa; --bg2:#e8eef5; --panel:#ffffff; --line:#cfdae6; --fg:#0c1a2a; --mute:#4d6079;
  --accent:#a86a00; --accent2:#1f63c4; --ok:#0f8a74; --warn:#a86a00; --bad:#c2412f; color-scheme:light }
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--bg)}
a{color:var(--accent2)} a:hover{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
h1,h2,h3{font-family:var(--f-display);line-height:1.1;text-wrap:balance;margin:0;font-weight:700;letter-spacing:-.015em}
h1{font-size:clamp(2.1rem,5.5vw,4.2rem)} h2{font-size:clamp(1.5rem,3vw,2.2rem)} h3{font-size:1.1rem}
p{margin:0} .mute{color:var(--mute)}
.kick{font:500 .72rem/1.2 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.mono{font-family:var(--f-mono)} .num{font-variant-numeric:tabular-nums}
.skip{position:absolute;left:-999px;top:8px;z-index:99;background:var(--accent);color:#111;padding:6px 10px}
.skip:focus{left:12px}

/* shell */
.shell{display:grid;grid-template-columns:232px minmax(0,1fr);min-height:100%}
.rail{position:sticky;top:env(safe-area-inset-top,0px);height:calc(100vh - env(safe-area-inset-top,0px));display:flex;flex-direction:column;gap:18px;
  padding:20px 14px 16px max(14px,env(safe-area-inset-left,0px));border-right:1px solid var(--line);background:var(--bg2);overflow-y:auto}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none;color:var(--fg)}
.mark{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;font:700 13px var(--f-mono);
  background:conic-gradient(from 200deg,#5aa9ff,#f2b84b,#e06bd0,#3fd0b4,#a38bff,#ff7a6b,#5aa9ff);color:#07111d}
.brand b{font-family:var(--f-display);font-size:1.05rem;display:block;line-height:1.1} .brand small{font:500 .62rem var(--f-mono);letter-spacing:.12em;color:var(--mute)}
.nav{display:flex;flex-direction:column;gap:2px}
.nav a{display:flex;gap:10px;align-items:center;padding:8px 10px;border-radius:8px;color:var(--mute);text-decoration:none;font-weight:500}
.nav a span{font:500 .68rem var(--f-mono);width:22px;opacity:.7}
.nav a:hover{background:var(--panel);color:var(--fg)}
.nav a[aria-current="page"]{background:var(--panel);color:var(--fg);box-shadow:inset 2px 0 0 var(--accent)}
.rail-foot{margin-top:auto;display:flex;flex-direction:column;gap:8px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.btn{appearance:none;border:1px solid var(--line);background:var(--panel);color:var(--fg);padding:8px 12px;border-radius:8px;font:500 .86rem var(--f-body);cursor:pointer;display:inline-flex;gap:8px;align-items:center;text-decoration:none}
.btn:hover{border-color:var(--accent);color:var(--fg)}
.btn.pri{background:var(--accent);color:#141006;border-color:var(--accent)}
.btn.pri:hover{filter:brightness(1.08);color:#141006}
.btn.sm{padding:5px 9px;font-size:.78rem}
.pill{display:inline-flex;align-items:center;gap:6px;font:500 .7rem var(--f-mono);letter-spacing:.06em;padding:3px 8px;border-radius:99px;border:1px solid var(--line);color:var(--mute);white-space:nowrap}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex:none}
.status{font:500 .7rem var(--f-mono);color:var(--mute)}
.status b{color:var(--ok);font-weight:500}

/* topbar (mobile) */
.top{display:none}
main{min-width:0;padding-block:28px 64px;padding-left:max(28px,env(safe-area-inset-left,0px));padding-right:max(28px,env(safe-area-inset-right,0px))}
.view{display:flex;flex-direction:column;gap:28px;max-width:1240px;margin:0 auto}
.view[hidden]{display:none!important}
.head{display:flex;flex-direction:column;gap:10px;max-width:72ch}

/* home */
.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:28px;align-items:center}
.hero .lead{font-size:1.08rem;color:var(--mute);max-width:58ch}
.hero h1 em{font-style:normal;color:var(--accent)}
.constel{position:relative;aspect-ratio:1/1;max-width:100%;border:1px solid var(--line);border-radius:16px;background:radial-gradient(circle at 50% 50%,var(--bg2),var(--bg));overflow:hidden}
.constel canvas{width:100%;height:100%;display:block}
.constel .cap{position:absolute;left:12px;bottom:10px;right:12px;display:flex;justify-content:space-between;gap:8px}
.stats{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stats div{background:var(--bg2);padding:14px 16px}
.stats b{display:block;font:700 1.8rem/1 var(--f-display);font-variant-numeric:tabular-nums}
.stats span{font-size:.8rem;color:var(--mute)}
.layers{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}
.layer{border-top:3px solid var(--c);padding:12px 2px 0;display:flex;flex-direction:column;gap:6px}
.layer h3{display:flex;gap:8px;align-items:baseline}
.layer h3 span{font:500 .7rem var(--f-mono);color:var(--mute)}
.layer p{font-size:.86rem;color:var(--mute)}
.doors{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.door{display:flex;flex-direction:column;gap:8px;padding:16px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel);text-decoration:none;color:var(--fg);min-width:0}
.door:hover{border-color:var(--accent);color:var(--fg)}
.door p{font-size:.88rem;color:var(--mute)}
.sites{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.site{padding:14px;border-left:2px solid var(--line);display:flex;flex-direction:column;gap:6px;min-width:0}
.site p{font-size:.86rem;color:var(--mute)}

/* ecosystem graph */
.split{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:16px;align-items:start}
.stage{position:relative;border:1px solid var(--line);border-radius:14px;background:var(--bg2);overflow:hidden;height:min(72vh,680px);min-height:420px}
.stage canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab}
.stage .legend{position:absolute;left:10px;top:10px;display:flex;gap:6px;flex-wrap:wrap;max-width:calc(100% - 20px)}
.panel{border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:18px;display:flex;flex-direction:column;gap:12px;min-width:0}
.panel ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px}
.panel li{font-size:.88rem}
.chipbar{display:flex;gap:6px;flex-wrap:wrap}
.chip{appearance:none;border:1px solid var(--line);background:transparent;color:var(--mute);border-radius:99px;padding:5px 11px;font:500 .78rem var(--f-body);cursor:pointer;display:inline-flex;gap:6px;align-items:center}
.chip[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}

/* registry */
.tools{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.search{flex:1 1 260px;min-width:0;display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:0 10px}
.search input{flex:1;min-width:0;background:transparent;border:0;color:var(--fg);font:inherit;padding:9px 0}
.search input:focus{outline:none}
select{background:var(--panel);color:var(--fg);border:1px solid var(--line);border-radius:8px;padding:8px;font:inherit}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:.88rem}
th,td{padding:10px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
th{font:500 .7rem var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute);background:var(--bg2);position:sticky;top:0}
tr.sel td,tbody tr:hover td{background:var(--bg2)}
tbody tr{cursor:pointer}
td b{font-weight:600}
.count{font:500 .8rem var(--f-mono);color:var(--mute)}

/* drawer */
.drawer{position:fixed;inset:0 0 0 auto;width:min(480px,100%);background:var(--panel);border-left:1px solid var(--line);z-index:50;transform:translateX(102%);transition:transform .25s ease;
  display:flex;flex-direction:column;gap:14px;padding:calc(20px + env(safe-area-inset-top,0px)) max(20px,env(safe-area-inset-right,0px)) calc(20px + env(safe-area-inset-bottom,0px)) 20px;overflow-y:auto}
.drawer.open{transform:none;box-shadow:-20px 0 60px rgba(0,0,0,.35)}
pre.code{margin:0;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:12px;font:12px/1.5 var(--f-mono);overflow:auto;max-height:280px;white-space:pre}
.cite{font-size:.86rem;background:var(--bg2);border-radius:8px;padding:10px 12px}

/* routes */
.roles{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
.role{appearance:none;text-align:left;border:1px solid var(--line);background:var(--panel);color:var(--fg);border-radius:var(--r);padding:12px;cursor:pointer;font:600 .92rem var(--f-body)}
.role[aria-pressed="true"]{border-color:var(--accent);box-shadow:inset 0 -3px 0 var(--accent)}
.journey{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:s}
.step{position:relative;padding:16px 18px 16px 0;display:flex;flex-direction:column;gap:6px;border-top:2px solid var(--c);min-width:0}
.step .n{font:500 .72rem var(--f-mono);color:var(--mute)}
.step p{font-size:.86rem;color:var(--mute)}

/* pathways */
.mods{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.mod{border:1px solid var(--line);border-radius:var(--r);background:var(--panel);padding:14px;display:flex;flex-direction:column;gap:8px;min-width:0}
.mod.on{border-color:var(--ok)}
.mod .row{justify-content:space-between}
.plan{position:sticky;top:calc(16px + env(safe-area-inset-top,0px))}
.plan ol{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:4px;font-size:.88rem}
.total{font:700 2rem/1 var(--f-display)}

/* lab */
.labgrid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:16px}
.gauge{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.gauge div{background:var(--bg2);border-radius:8px;padding:10px 12px}
.gauge b{display:block;font:600 1.3rem var(--f-mono);font-variant-numeric:tabular-nums}
.gauge span{font-size:.75rem;color:var(--mute)}
#trace{width:100%;height:200px;display:block;background:var(--bg);border-radius:8px;border:1px solid var(--line)}
input[type=range]{width:100%;accent-color:var(--accent)}
.scale{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}
.scale button{appearance:none;border:1px solid var(--line);background:var(--bg2);color:var(--fg);border-radius:8px;padding:8px 4px;cursor:pointer;font:600 .9rem var(--f-mono)}
.scale button[aria-pressed="true"]{background:var(--accent);color:#141006;border-color:var(--accent)}
.qa{display:flex;flex-direction:column;gap:12px}
.meter{height:8px;background:var(--bg2);border-radius:99px;overflow:hidden}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--bad),var(--warn),var(--ok));width:0;transition:width .3s}

/* governance */
.chain{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.chain div{padding:14px;border:1px solid var(--line);border-radius:var(--r);display:flex;flex-direction:column;gap:6px}
.chain b{font:500 .72rem var(--f-mono);color:var(--accent)}
.gates{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
.gate{padding:12px;border-radius:var(--r);background:var(--panel);border:1px solid var(--line);display:flex;flex-direction:column;gap:6px;font-size:.86rem}
.s-live{color:var(--ok)} .s-partial{color:var(--warn)} .s-target{color:var(--accent2)} .s-closed{color:var(--bad)}
.note{border-left:3px solid var(--warn);padding:10px 14px;background:var(--bg2);border-radius:0 8px 8px 0;font-size:.9rem}

/* metaverse */
.mv{position:relative;height:min(78vh,760px);min-height:440px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#050b14}
.mv canvas{display:block;width:100%;height:100%;touch-action:none}
.hud{position:absolute;pointer-events:none;inset:0}
.hud > *{pointer-events:auto}
.hud .tl{position:absolute;left:12px;top:12px;display:flex;flex-direction:column;gap:6px;max-width:min(320px,calc(100% - 24px))}
.hud .tr{position:absolute;right:12px;top:12px;display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.glass{background:rgba(7,17,29,.72);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:10px 12px;color:#e7eef7}
.glass .kick{color:#9fb3cb}
.glass .btn{background:rgba(16,34,54,.85);color:#e7eef7;border-color:rgba(255,255,255,.18)}
#minimap{position:absolute;right:12px;bottom:12px;width:132px;height:132px;border-radius:50%;border:1px solid rgba(255,255,255,.2);background:rgba(7,17,29,.7)}
.joy{position:absolute;left:18px;bottom:18px;width:110px;height:110px;border-radius:50%;border:1px solid rgba(255,255,255,.25);background:rgba(7,17,29,.45);display:none;touch-action:none}
.joy i{position:absolute;left:35px;top:35px;width:40px;height:40px;border-radius:50%;background:rgba(242,184,75,.85)}
.info{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);width:min(520px,calc(100% - 170px));display:none}
.info.show{display:block}
.dlist{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.dlist button{appearance:none;text-align:left;border:1px solid var(--line);background:var(--panel);color:var(--fg);border-radius:8px;padding:10px;cursor:pointer;display:flex;gap:8px;align-items:center;font:500 .88rem var(--f-body)}
.mvfallback{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:24px;color:#e7eef7}

/* palette */
.pal{position:fixed;inset:0;z-index:70;background:rgba(3,8,14,.55);display:none;align-items:flex-start;justify-content:center;padding:12vh 16px 16px}
.pal.open{display:flex}
.pal .box{width:min(640px,100%);background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.pal input{width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);color:var(--fg);font:1.05rem var(--f-body);padding:16px 18px}
.pal input:focus{outline:none}
.pal ul{list-style:none;margin:0;padding:6px;max-height:50vh;overflow:auto}
.pal li{padding:9px 12px;border-radius:8px;display:flex;justify-content:space-between;gap:12px;cursor:pointer}
.pal li[aria-selected="true"],.pal li:hover{background:var(--bg2)}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:9px 14px;border-radius:8px;font-size:.88rem;z-index:80;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.show{opacity:1}
.modal{position:fixed;inset:0;z-index:75;background:rgba(3,8,14,.6);display:none;place-items:center;padding:16px}
.modal.open{display:grid}
.modal .box{width:min(720px,100%);max-height:88vh;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:12px}
textarea.code{width:100%;min-height:260px;background:var(--bg);color:var(--fg);border:1px solid var(--line);border-radius:8px;font:12px/1.5 var(--f-mono);padding:12px;resize:vertical}

/* responsive */
@media (max-width:1100px){
  .layers,.gates{grid-template-columns:repeat(3,minmax(0,1fr))}
  .stats{grid-template-columns:repeat(3,minmax(0,1fr))}
  .roles{grid-template-columns:repeat(3,minmax(0,1fr))}
  .split,.labgrid{grid-template-columns:minmax(0,1fr)}
  .mods{grid-template-columns:repeat(2,minmax(0,1fr))}
  .doors,.sites{grid-template-columns:repeat(2,minmax(0,1fr))}
  .chain{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:820px){
  .shell{grid-template-columns:minmax(0,1fr)}
  .rail{position:fixed;inset:0 auto 0 0;width:min(280px,86vw);height:100%;z-index:55;transform:translateX(-102%);transition:transform .25s;padding-top:calc(20px + env(safe-area-inset-top,0px))}
  .rail.open{transform:none;box-shadow:20px 0 60px rgba(0,0,0,.4)}
  .top{display:flex;position:sticky;top:env(safe-area-inset-top,0px);z-index:40;background:var(--bg2);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:8px;
    padding-block:10px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
  main{padding-block:20px 56px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
  .hero{grid-template-columns:minmax(0,1fr)}
  .journey{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dlist{grid-template-columns:repeat(2,minmax(0,1fr))}
  .info{width:calc(100% - 24px);bottom:150px}
}
@media (max-width:520px){
  .layers,.gates,.stats,.roles,.mods,.doors,.sites,.chain,.journey{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .mods,.doors,.sites,.chain,.journey{grid-template-columns:minmax(0,1fr)}
  .dlist{grid-template-columns:minmax(0,1fr)}
  #minimap{width:96px;height:96px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
a.pill{text-decoration:none;color:var(--fg)} a.pill:hover{border-color:var(--accent)}
.mod .pill,.chipbar .pill{white-space:normal;max-width:100%;overflow-wrap:anywhere}