/* =========================================================
   AI KEEPER · MANUAL  ·  v2
   Matches main-site atmosphere: starfield, perspective grid,
   accent glow, mono ticker accents.
   ========================================================= */

*,*::before,*::after{box-sizing:border-box}

:root{
  --bg:#05070c;
  --bg-2:#0a0e17;
  --panel:rgba(14,20,30,.78);
  --panel-2:rgba(14,20,30,.4);
  --line:rgba(140,180,220,.12);
  --line-2:rgba(140,180,220,.24);
  --line-3:rgba(140,180,220,.45);
  --text:#e6eef8;
  --muted:#9aa9c0;
  --dim:#5d6c83;
  --accent:#22e4ff;
  --accent-soft:rgba(34,228,255,.14);
  --accent-glow:rgba(34,228,255,.45);
  --accent-ink:#001218;
  --ok:#5be89a;
  --warn:#ffc24d;
  --danger:#ff6b8a;
  --sans:'Space Grotesk',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,monospace;
}

html{scroll-behavior:smooth;background:var(--bg);color:var(--text);scroll-padding-top:90px}
body{
  margin:0;font-family:var(--sans);line-height:1.55;color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  position:relative;overflow-x:hidden;
}

/* ============== ATMOSPHERE LAYER ============== */
body::before{
  /* starfield */
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(1.2px 1.2px at 12% 18%, #fff, transparent 60%),
    radial-gradient(1px 1px at 28% 62%, #c8e8ff, transparent 60%),
    radial-gradient(1.4px 1.4px at 47% 24%, #fff, transparent 60%),
    radial-gradient(1px 1px at 58% 78%, #c8e8ff, transparent 60%),
    radial-gradient(1.4px 1.4px at 76% 12%, #fff, transparent 60%),
    radial-gradient(1px 1px at 84% 54%, #fff, transparent 60%),
    radial-gradient(1.2px 1.2px at 92% 86%, #c8e8ff, transparent 60%),
    radial-gradient(1px 1px at 22% 88%, #fff, transparent 60%);
  opacity:.55;
}
body::after{
  /* dual halos */
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(circle at 8% -10%, rgba(34,228,255,.18), transparent 36rem),
    radial-gradient(circle at 96% 4%, rgba(95,118,255,.13), transparent 32rem),
    radial-gradient(circle at 50% 110%, rgba(34,228,255,.10), transparent 40rem);
}
.scanlines{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:repeating-linear-gradient(0deg, rgba(255,255,255,.018) 0 1px, transparent 1px 3px);
  mix-blend-mode:overlay;opacity:.4;
}

/* ============== LAYOUT SHELL ============== */
.shell{
  position:relative;z-index:2;
  display:grid;grid-template-columns:280px minmax(0,1fr) 260px;
  min-height:100vh;
  max-width:1480px;margin:0 auto;
}
.shell.no-toc{grid-template-columns:280px minmax(0,1fr)}

a{color:inherit;text-decoration:none}
code{
  font-family:var(--mono);font-size:.92em;color:var(--accent);
  background:var(--accent-soft);padding:1px 6px;border:1px solid var(--line-2);
  border-radius:2px;
}
strong,b{color:var(--text)}

/* ============== SIDEBAR ============== */
.side{
  position:sticky;top:0;height:100vh;overflow:auto;
  border-right:1px solid var(--line);
  background:rgba(5,7,12,.7);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  padding:22px 22px 28px;
  scrollbar-width:thin;
}
.side::-webkit-scrollbar{width:6px}
.side::-webkit-scrollbar-thumb{background:var(--line-2)}

.brand{
  display:flex;gap:12px;align-items:center;
  font-weight:700;letter-spacing:.04em;font-size:14px;
  margin-bottom:30px;
  font-family:var(--mono);
}
.logo{
  width:34px;height:34px;flex:none;
  border:1px solid var(--accent);
  background:radial-gradient(circle, var(--accent-soft), transparent 70%);
  box-shadow:0 0 24px var(--accent-glow), inset 0 0 14px var(--accent-soft);
  position:relative;
}
.logo::before,.logo::after{
  content:"";position:absolute;background:var(--accent);
}
.logo::before{top:50%;left:6px;right:6px;height:1px;transform:translateY(-50%);box-shadow:0 0 6px var(--accent)}
.logo::after{top:6px;bottom:6px;left:50%;width:1px;transform:translateX(-50%);box-shadow:0 0 6px var(--accent)}

.side-label{
  display:flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:10px;text-transform:uppercase;
  letter-spacing:.18em;color:var(--accent);
  margin:22px 0 10px;
}
.side-label::before{
  content:"";width:18px;height:1px;background:var(--accent);
  box-shadow:0 0 6px var(--accent);
}

.side nav{display:grid;gap:3px}
.side nav a{
  font-family:var(--mono);font-size:12px;color:var(--muted);
  padding:9px 12px;border:1px solid transparent;
  display:flex;align-items:center;gap:10px;
  letter-spacing:.04em;
  position:relative;
  transition:color .15s, background .15s, border-color .15s;
}
.side nav a .num{
  font-size:9.5px;color:var(--dim);letter-spacing:.1em;
}
.side nav a:hover{color:var(--text);border-color:var(--line-2);background:rgba(34,228,255,.05)}
.side nav a.active{
  color:var(--accent);border-color:var(--accent);
  background:var(--accent-soft);
  box-shadow:inset 0 0 16px rgba(34,228,255,.08);
}
.side nav a.active::before{
  content:"▸";position:absolute;left:-2px;color:var(--accent);
  font-size:10px;
}

/* in-page subnav (current page sections) */
.side .subnav{padding-left:6px;border-left:1px solid var(--line)}
.side .subnav a{
  padding:6px 10px;font-size:11px;color:var(--dim);
  border:none;
}
.side .subnav a:hover{color:var(--text);background:transparent}
.side .subnav a.active{
  color:var(--accent);background:transparent;
  border:none;box-shadow:none;
}
.side .subnav a.active::before{display:none}

.side small.body{
  display:block;font-family:var(--sans);font-size:12px;
  color:var(--muted);letter-spacing:0;text-transform:none;
  line-height:1.5;margin-top:8px;
}

/* ============== TOPBAR ============== */
.topbar{
  position:sticky;top:0;z-index:5;
  border-bottom:1px solid var(--line);
  background:rgba(5,7,12,.78);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.topbar-inner{
  max-width:1120px;margin:0 auto;
  padding:12px 32px;
  display:flex;justify-content:space-between;gap:14px;align-items:center;
}
.crumb{
  font-family:var(--mono);font-size:11px;color:var(--muted);
  letter-spacing:.14em;text-transform:uppercase;
  display:flex;align-items:center;gap:8px;
}
.crumb .sep{color:var(--dim);opacity:.6}
.crumb .here{color:var(--accent)}
.topbar-actions{display:flex;align-items:center;gap:10px}

.search-wrap{
  position:relative;
  display:flex;align-items:center;gap:8px;
  background:rgba(5,7,12,.6);
  border:1px solid var(--line-2);
  padding:6px 10px;min-width:240px;
  font-family:var(--mono);
}
.search-wrap input{
  flex:1;background:transparent;border:0;outline:0;
  color:var(--text);font-family:var(--mono);font-size:12px;
}
.search-wrap input::placeholder{color:var(--dim)}
.search-wrap .kbd{
  font-size:10px;color:var(--dim);
  border:1px solid var(--line-2);padding:1px 5px;
}
.search-wrap .ico{color:var(--accent);width:12px;height:12px;flex:none}

.search-results{
  position:absolute;top:calc(100% + 6px);left:0;right:0;
  background:rgba(5,7,12,.96);border:1px solid var(--line-2);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  max-height:60vh;overflow:auto;
  display:none;z-index:20;
  box-shadow:0 24px 60px rgba(0,0,0,.6), 0 0 30px rgba(34,228,255,.08);
}
.search-results.open{display:block}
.search-results .hit{
  display:block;padding:10px 12px;
  border-bottom:1px solid var(--line);
  font-family:var(--sans);
}
.search-results .hit:last-child{border-bottom:0}
.search-results .hit:hover,.search-results .hit.kb{
  background:var(--accent-soft);
}
.search-results .hit .h-page{
  font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);
}
.search-results .hit .h-title{font-size:13px;color:var(--text);margin-top:3px}
.search-results .hit .h-snip{font-size:11.5px;color:var(--muted);margin-top:3px;line-height:1.4}
.search-results .hit mark{background:rgba(34,228,255,.25);color:var(--text)}
.search-results .empty{padding:18px;color:var(--muted);font-size:12px;text-align:center}

.pill{
  display:inline-flex;align-items:center;gap:6px;
  min-height:32px;padding:0 12px;
  border:1px solid var(--line-2);
  font-family:var(--mono);font-size:11px;color:var(--accent);
  text-transform:uppercase;letter-spacing:.1em;
  transition:.15s;
}
.pill:hover{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 14px rgba(34,228,255,.2)}

/* ============== MAIN ============== */
.main{min-width:0}
main{max-width:1120px;margin:0 auto;padding:48px 32px 96px}

.hero{padding-bottom:32px;border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11px;color:var(--accent);
  letter-spacing:.18em;text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{
  content:"";width:24px;height:1px;background:var(--accent);
  box-shadow:0 0 8px var(--accent);
}

h1{
  font-size:clamp(40px,6vw,72px);line-height:.96;
  letter-spacing:-.035em;margin:0;max-width:920px;font-weight:700;
}
h1 .g{color:var(--accent);text-shadow:0 0 28px var(--accent-glow)}
h2{
  font-size:clamp(28px,3.4vw,42px);line-height:1.05;
  letter-spacing:-.025em;margin:64px 0 18px;font-weight:600;
  scroll-margin-top:80px;
  position:relative;
}
h2::before{
  content:"§";position:absolute;left:-28px;top:6px;
  font-family:var(--mono);font-size:14px;color:var(--accent);
  opacity:.55;
}
h3{font-size:20px;letter-spacing:-.01em;margin:0 0 10px;font-weight:600}
h4{
  font-family:var(--mono);font-size:11px;text-transform:uppercase;
  letter-spacing:.14em;color:var(--accent);margin:24px 0 8px;
}
p{color:var(--muted);margin:0 0 14px}
.lede{font-size:18px;max-width:760px;margin-top:24px;color:#bfcce0}

/* anchor link button on hover */
h2 .anchor,h3 .anchor{
  opacity:0;display:inline-block;margin-left:10px;
  font-family:var(--mono);font-size:.5em;color:var(--accent);
  transition:opacity .15s;
}
h2:hover .anchor,h3:hover .anchor{opacity:.7}

/* ============== GRIDS / CARDS ============== */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.grid.three{grid-template-columns:repeat(3,1fr)}
.grid.four{grid-template-columns:repeat(4,1fr)}

.card{
  position:relative;padding:24px;
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(14,20,30,.82), rgba(14,20,30,.36));
  overflow:hidden;
  clip-path:polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, var(--accent), transparent);
  opacity:.6;
}
.card::after{
  /* corner bracket */
  content:"";position:absolute;top:8px;right:8px;
  width:10px;height:10px;
  border-top:1px solid var(--line-3);border-right:1px solid var(--line-3);
}
.card p,.card li{font-size:14px;color:var(--muted)}
.card ul,.card ol{margin:10px 0 0;padding-left:18px}
.card li+li{margin-top:6px}

.metric{
  font-family:var(--mono);font-size:11px;color:var(--dim);
  text-transform:uppercase;letter-spacing:.12em;
}
.metric b{
  display:block;font-family:var(--sans);font-size:34px;line-height:1.1;
  color:var(--text);letter-spacing:-.03em;
  margin-bottom:4px;
}
.metric.metric-glow b{
  color:var(--accent);text-shadow:0 0 18px var(--accent-glow);
}

/* TABLES (tiered rows) */
.table{
  border-top:1px solid var(--line);
  margin-top:18px;
  background:linear-gradient(180deg, rgba(14,20,30,.4), transparent);
}
.row{
  display:grid;grid-template-columns:200px 1fr 1fr;gap:18px;
  padding:14px 14px;
  border-bottom:1px solid var(--line);
  position:relative;
}
.row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:transparent;transition:background .15s;
}
.row:hover::before{background:var(--accent);box-shadow:0 0 8px var(--accent)}
.row:hover{background:rgba(34,228,255,.03)}
.row b{font-size:14px;color:var(--text);font-weight:600}
.row span{font-size:13px;color:var(--muted)}
.row.tiered{grid-template-columns:200px 1fr;gap:18px}

.tier-plain,.tier-tech{margin:0 0 6px}
.tier-plain{font-size:14px;color:#dde6f3;line-height:1.55}
.tier-plain::before{
  content:"In plain English";display:inline-block;
  font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;
  margin-right:9px;padding:2px 7px;
  border:1px solid var(--accent);background:var(--accent-soft);
  vertical-align:1px;
}
.tier-tech{font-size:13px;color:var(--muted);line-height:1.55}
.tier-tech::before{
  content:"Operator";display:inline-block;
  font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;
  color:var(--dim);text-transform:uppercase;
  margin-right:9px;padding:2px 7px;
  border:1px dashed var(--line-3);
  vertical-align:1px;
}

details.deeper{margin-top:8px;border-top:1px dashed var(--line);padding-top:8px}
details.deeper summary{
  font-family:var(--mono);font-size:11px;color:var(--accent);
  letter-spacing:.12em;text-transform:uppercase;cursor:pointer;list-style:none;
}
details.deeper summary::-webkit-details-marker{display:none}
details.deeper summary::after{content:" ▾";color:var(--dim)}
details.deeper[open] summary::after{content:" ▴"}
details.deeper p,details.deeper li{font-size:13px;color:var(--muted);margin-top:8px}

.toc-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:26px;
}
.toc-grid a{
  position:relative;
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(14,20,30,.78), rgba(14,20,30,.32));
  padding:18px;
  transition:.18s;
  clip-path:polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.toc-grid a:hover{
  border-color:var(--accent);background:rgba(34,228,255,.06);
  box-shadow:0 0 24px rgba(34,228,255,.1);
  transform:translateY(-1px);
}
.toc-grid a b{display:block;color:var(--text);margin-bottom:6px;font-size:15px}
.toc-grid a span{display:block;color:var(--muted);font-size:13px;line-height:1.5}
.toc-grid a .arrow{
  position:absolute;top:14px;right:16px;color:var(--accent);font-family:var(--mono);
  opacity:.4;transition:opacity .15s, transform .15s;
}
.toc-grid a:hover .arrow{opacity:1;transform:translateX(3px)}

.callout{
  position:relative;
  border:1px solid rgba(255,194,77,.35);
  background:rgba(255,194,77,.08);
  padding:18px 18px 18px 50px;
  margin:22px 0;color:#dfd2af;
}
.callout::before{
  content:"!";position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border:1px solid var(--warn);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;color:var(--warn);
  background:rgba(255,194,77,.12);
}

.ok{color:var(--ok)}.warn{color:var(--warn)}.accent{color:var(--accent)}
.source-note{
  font-family:var(--mono);font-size:11px;color:var(--dim);
  margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);
  letter-spacing:.04em;
}

/* ============== RIGHT TOC RAIL ============== */
.toc-rail{
  position:sticky;top:0;align-self:start;
  height:100vh;overflow:auto;
  border-left:1px solid var(--line);
  padding:48px 22px 32px 22px;
  scrollbar-width:thin;
}
.toc-rail h6{
  margin:0 0 14px;
  font-family:var(--mono);font-size:10px;color:var(--accent);
  letter-spacing:.18em;text-transform:uppercase;
  display:flex;align-items:center;gap:8px;
}
.toc-rail h6::before{
  content:"";width:18px;height:1px;background:var(--accent);
  box-shadow:0 0 6px var(--accent);
}
.toc-rail ol{list-style:none;margin:0;padding:0}
.toc-rail li{margin:0}
.toc-rail a{
  display:block;
  font-family:var(--mono);font-size:11px;color:var(--dim);
  padding:6px 10px 6px 14px;
  border-left:1px solid var(--line);
  letter-spacing:.04em;line-height:1.4;
  transition:color .15s, border-color .15s, background .15s;
}
.toc-rail a:hover{color:var(--text);border-left-color:var(--line-3)}
.toc-rail a.active{
  color:var(--accent);border-left:1px solid var(--accent);
  box-shadow:-1px 0 8px rgba(34,228,255,.4);
  background:linear-gradient(90deg, var(--accent-soft), transparent 60%);
}
.toc-rail a.h3{padding-left:24px;font-size:10.5px;color:var(--dim);opacity:.85}

/* ============== GLOSSARY DRAWER ============== */
.gloss-fab{
  position:fixed;right:18px;bottom:18px;z-index:30;
  display:inline-flex;align-items:center;gap:9px;
  padding:10px 14px;
  background:rgba(5,7,12,.92);
  border:1px solid var(--accent);
  color:var(--accent);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;
  box-shadow:0 0 24px rgba(34,228,255,.25), 0 12px 28px rgba(0,0,0,.5);
  cursor:pointer;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.gloss-fab:hover{background:var(--accent-soft)}
.gloss-fab .pulse{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px var(--accent);
  animation:pulseDot 1.6s ease-in-out infinite;
}
@keyframes pulseDot{0%,100%{opacity:1}50%{opacity:.35}}

.gloss-drawer{
  position:fixed;inset:0;z-index:40;
  display:none;
}
.gloss-drawer.open{display:block}
.gloss-drawer .scrim{
  position:absolute;inset:0;
  background:rgba(2,4,8,.6);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.gloss-drawer .panel{
  position:absolute;top:0;right:0;bottom:0;
  width:min(440px,90vw);
  background:rgba(8,12,20,.96);
  border-left:1px solid var(--accent);
  box-shadow:-30px 0 70px rgba(0,0,0,.6), inset 1px 0 0 var(--accent-soft);
  padding:22px 22px 28px;
  overflow:auto;
  animation:slideIn .25s ease;
}
@keyframes slideIn{from{transform:translateX(20px);opacity:0}to{transform:none;opacity:1}}
.gloss-drawer .head{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:18px;padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.gloss-drawer .head h6{
  margin:0;font-family:var(--mono);font-size:11px;color:var(--accent);
  letter-spacing:.16em;text-transform:uppercase;
}
.gloss-drawer .close{
  background:transparent;border:1px solid var(--line-2);
  color:var(--muted);width:28px;height:28px;cursor:pointer;
  font-family:var(--mono);font-size:14px;
}
.gloss-drawer .close:hover{color:var(--accent);border-color:var(--accent)}
.gloss-drawer .filter{
  width:100%;background:rgba(5,7,12,.6);border:1px solid var(--line-2);
  color:var(--text);font-family:var(--mono);font-size:12px;
  padding:8px 10px;outline:none;margin-bottom:14px;
}
.gloss-drawer .filter:focus{border-color:var(--accent);box-shadow:0 0 12px rgba(34,228,255,.18)}
.gloss-drawer .term{
  border-bottom:1px solid var(--line);padding:12px 4px;
}
.gloss-drawer .term b{
  display:block;color:var(--text);font-size:14px;margin-bottom:5px;
}
.gloss-drawer .term .pe{
  font-size:13px;color:#cdd7e8;line-height:1.5;margin:0 0 6px;
}
.gloss-drawer .term .op{
  font-size:12px;color:var(--muted);line-height:1.5;margin:0;
  font-family:var(--mono);
}
.gloss-drawer .term.hide{display:none}

/* ============== FOOTER ============== */
footer{
  border-top:1px solid var(--line);
  padding:24px 32px;color:var(--dim);
  font-family:var(--mono);font-size:11px;
  text-transform:uppercase;letter-spacing:.1em;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
footer a{color:var(--muted)}
footer a:hover{color:var(--accent)}

/* ============== UTIL ============== */
.hl{color:var(--accent)}

/* ============== RESPONSIVE ============== */
@media(max-width:1180px){
  .shell{grid-template-columns:240px minmax(0,1fr)}
  .toc-rail{display:none}
}
@media(max-width:980px){
  .shell{display:block}
  .side{
    position:relative;height:auto;
    border-right:0;border-bottom:1px solid var(--line);
    padding:18px 18px 12px;
  }
  .side nav{grid-auto-flow:column;grid-auto-columns:max-content;overflow:auto}
  .side nav a{white-space:nowrap}
  .side .subnav,.side-label.in-page,.side small.body{display:none}
  .grid,.grid.three,.grid.four,.toc-grid{grid-template-columns:1fr}
  .row,.row.tiered{grid-template-columns:1fr}
  .row b{margin-bottom:6px}
  .topbar-inner{padding:10px 18px;flex-wrap:wrap}
  .search-wrap{min-width:100%}
  main{padding:36px 18px 80px}
  h2::before{display:none}
}
@media(max-width:640px){
  .gloss-fab{padding:9px 12px;font-size:10px}
  .gloss-fab .label-long{display:none}
}
::selection{background:var(--accent);color:var(--accent-ink)}