/* The Cosmic Cathedral — transoperability.com draft v0.1 */
:root{
  --void:#050506; --ink:#E9E4DA; --dim:#8C877E; --faint:#4A4741; --rule:#24221F;
  --light:#FFF4E2; --warm:#E8C998; --refuted:#D9826B; --ok:#B9C9A4;
  --serif:"Newsreader",var(--cjk-serif,serif); --sans:"IBM Plex Sans",var(--cjk-sans,system-ui),sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --p:0; /* threshold progress 0..1, set by site.js */
}
*{box-sizing:border-box}
html{background:var(--void);color:var(--ink);scroll-behavior:smooth}
body{margin:0;font:400 17px/1.7 var(--sans);-webkit-font-smoothing:antialiased;background:var(--void)}
:lang(ko){word-break:keep-all}
h1,h2,h3,blockquote,.passage p,.next p.q,.verdict{text-wrap:balance}
a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--faint);text-underline-offset:3px}
a:hover{text-decoration-color:var(--warm)}
.wrap{max-width:860px;margin:0 auto;padding-inline:24px}
.mono{font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;color:var(--dim)}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--dim)}

/* language bar */
.lang{position:fixed;top:calc(14px + env(safe-area-inset-top,0px));right:18px;z-index:5;display:flex;gap:14px;font-family:var(--mono);font-size:.72rem;letter-spacing:.12em}
.lang a{color:var(--dim);text-decoration:none}
.lang a[aria-current]{color:var(--ink)}
.mark{position:fixed;top:calc(14px + env(safe-area-inset-top,0px));left:18px;z-index:5;font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;color:var(--dim);text-decoration:none}

/* 01 · THRESHOLD — one aperture of light in the dark (after Turrell) */
.threshold{position:relative;height:220vh}
.threshold .stage{position:sticky;top:0;height:100vh;display:grid;place-items:center;overflow:hidden}
.aperture{position:absolute;left:50%;top:50%;
  width:calc(16vmin + var(--p)*190vmax);height:calc(16vmin + var(--p)*190vmax);
  transform:translate(-50%,-50%);border-radius:50%;
  background:radial-gradient(circle,var(--light) 0%,rgba(255,244,226,.55) 38%,rgba(232,201,152,.10) 62%,rgba(5,5,6,0) 71%);
  opacity:calc(.92 - var(--p)*.78);animation:breathe 9s ease-in-out infinite}
@keyframes breathe{50%{filter:brightness(1.12)}}
.threshold blockquote{position:relative;margin:0;padding-inline:24px;text-align:center;max-width:30ch;
  font:300 clamp(1.35rem,3.2vw,2.1rem)/1.45 var(--serif);color:var(--ink);
  transform:translateY(calc(30vh + var(--p)*-4vh));opacity:calc(1 - var(--p)*1.4)}
.threshold .cue{position:absolute;bottom:calc(28px + env(safe-area-inset-bottom,0px));left:0;right:0;text-align:center;opacity:calc(.8 - var(--p)*3)}

/* passage: nothing → everything → beyond */
.passage section{min-height:92vh;display:grid;place-items:center;text-align:center;padding-block:12vh}
.passage h2{margin:0 0 .4em;font:300 clamp(3rem,10vw,7.5rem)/1 var(--serif);letter-spacing:-.01em}
.passage p{margin:0 auto;max-width:34ch;color:var(--dim);font-size:1.05rem}
.passage .nothing h2{color:#3A3834}
.passage .everything h2{color:var(--ink)}
.passage .beyond h2{color:var(--warm);text-shadow:0 0 60px rgba(232,201,152,.25)}

/* the word */
.word{padding-block:18vh 14vh;border-top:1px solid var(--rule)}
.word h1{margin:.3em 0 .2em;font:300 clamp(2.6rem,8.4vw,6.4rem)/1 var(--serif);letter-spacing:-.015em;overflow-wrap:anywhere}
.word .names{font-family:var(--mono);font-size:.8rem;color:var(--dim);letter-spacing:.08em}
.word .def{margin:2.2em 0 1.4em;font:400 clamp(1.25rem,2.6vw,1.6rem)/1.5 var(--serif)}
.word .core{margin:0;padding-left:1.1em;border-left:1px solid var(--warm);font:italic 300 1.2rem/1.6 var(--serif);color:var(--warm)}
.word .meta{margin-top:2.4em}

.compare{margin-top:4em;overflow-x:auto}
.compare table{width:100%;min-width:560px;border-collapse:collapse;font-size:.92rem}
.compare th,.compare td{padding:.85em 1em;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
.compare thead th{font-family:var(--mono);font-weight:400;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--dim)}
.compare tbody th{font-weight:400;color:var(--dim);width:18%}
.compare td:last-child{color:var(--ink)}
.compare td:nth-child(2){color:var(--dim)}

/* the triangle */
.triangle{padding-block:16vh;border-top:1px solid var(--rule)}
.triangle h2,.archive h2,.status h2,.not h2{font:300 clamp(1.9rem,4.4vw,3rem)/1.15 var(--serif);margin:.4em 0 .6em}
.triangle .lead{color:var(--dim);max-width:52ch}
.tri{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:32px;align-items:center;margin-top:3em}
.tri svg{width:100%;height:auto;display:block}
.tri .node circle{fill:var(--void);stroke:var(--ink);stroke-width:1.2}
.tri .node.bad circle{stroke:var(--refuted)}
.tri .node text{fill:var(--ink);font:400 15px var(--mono);text-anchor:middle;dominant-baseline:central}
.tri .edge line{stroke:var(--faint);stroke-width:1.5}
.tri .edge.flip line{stroke:var(--warm);stroke-dasharray:6 6}
.tri .edge button{all:unset}
.tri .edge-btn{cursor:pointer}
.tri .edge-btn rect{fill:var(--void);stroke:var(--faint)}
.tri .edge-btn:hover rect,.tri .edge-btn:focus-visible rect{stroke:var(--ink)}
.tri .edge-btn text{fill:var(--ink);font:400 13px var(--mono);text-anchor:middle;dominant-baseline:central}
.tri .pulse{fill:var(--light);opacity:0}
.readout{font-family:var(--mono);font-size:.86rem;line-height:2}
.readout div{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--rule)}
.readout b{font-weight:400}
.readout .yes{color:var(--ok)} .readout .no{color:var(--refuted)}
.readout .verdict{margin-top:1.2em;border:0;font:400 1.15rem/1.5 var(--serif);color:var(--ink);display:block}
.readout .tri-actions{margin-top:1.4em;display:flex;justify-content:flex-start;gap:12px;flex-wrap:wrap;border:0}
.btn{font:400 .78rem var(--mono);letter-spacing:.1em;color:var(--ink);background:none;border:1px solid var(--faint);padding:.7em 1.1em;cursor:pointer}
.btn:hover,.btn:focus-visible{border-color:var(--ink)}
.triangle .note{margin-top:3em;font-size:.88rem;color:var(--dim);max-width:62ch}

/* archive / ledger */
.archive{padding-block:16vh;border-top:1px solid var(--rule)}
.ledger{list-style:none;margin:3em 0 0;padding:0;border-left:1px solid var(--rule)}
.ledger li{position:relative;padding:0 0 2.6em 28px}
.ledger li::before{content:"";position:absolute;left:-4px;top:.55em;width:7px;height:7px;border-radius:50%;background:var(--dim)}
.ledger li.refuted::before{background:var(--refuted)}
.ledger li.open::before{background:none;border:1px solid var(--warm)}
.ledger time{font-family:var(--mono);font-size:.78rem;color:var(--dim);letter-spacing:.06em}
.ledger h3{margin:.25em 0 .35em;font:400 1.22rem/1.4 var(--serif)}
.ledger p{margin:0;color:var(--dim);font-size:.95rem}
.ledger code,.hash{font-family:var(--mono);font-size:.76rem;color:var(--ink);overflow-wrap:anywhere}
.tag{display:inline-block;margin-left:.6em;padding:.05em .55em;border:1px solid var(--faint);font:400 .64rem/1.7 var(--mono);letter-spacing:.14em;color:var(--dim);vertical-align:.15em;text-transform:uppercase}
.refuted .tag{border-color:var(--refuted);color:var(--refuted)}
.open .tag{border-color:var(--warm);color:var(--warm)}

/* status board */
.status{padding-block:14vh;border-top:1px solid var(--rule)}
.board{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:2em}
.board div{background:var(--void);padding:1.4em 1.4em 1.6em}
.board h3{margin:0 0 .6em;font-family:var(--mono);font-weight:400;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--dim)}
.board ul{margin:0;padding-left:1.1em;font-size:.93rem}
.board li{margin-bottom:.4em}

/* what it is not */
.not{padding-block:12vh;border-top:1px solid var(--rule)}
.not ul{padding-left:1.1em;color:var(--dim)}

/* next boundary */
.next{min-height:100vh;display:grid;place-items:center;text-align:center;border-top:1px solid var(--rule);position:relative;overflow:hidden}
.next::before{content:"";position:absolute;left:50%;top:50%;width:4px;height:4px;border-radius:50%;background:var(--light);box-shadow:0 0 40px 12px rgba(255,244,226,.18);transform:translate(-50%,-180px)}
.next p.q{margin:1em auto 0;max-width:30ch;font:300 clamp(1.4rem,3vw,2rem)/1.45 var(--serif)}

footer{border-top:1px solid var(--rule);padding-block:48px calc(48px + env(safe-area-inset-bottom,0px));font-size:.82rem;color:var(--dim)}
footer .row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}

@media (max-width:720px){
  body{font-size:16px}
  .tri{grid-template-columns:1fr}
  .board{grid-template-columns:1fr}
  .lang{gap:10px}
}
@media (prefers-reduced-motion:reduce){
  .aperture{animation:none}
  html{scroll-behavior:auto}
}