/* SKRSI - skrsi.skworld.io
   Palette: cool paper + ink, ochre accent for evaluation, muted
   instrument colours for verdict states. */

:root{
  --paper:#f4f6f8;
  --card:#ffffff;
  --ink:#14202a;
  --ink-2:#3c4b5a;
  --muted:#6a7b8b;
  --line:#dbe2e9;
  --line-2:#eaeff3;
  --accent:#a85f0a;
  --accent-soft:#fbf1e2;
  --pass:#1f6349;
  --pass-soft:#e6f1ec;
  --fail:#8f3538;
  --fail-soft:#f7eaea;
  --shadow:0 1px 2px rgba(20,32,42,.05), 0 6px 20px rgba(20,32,42,.05);
  --radius:10px;
}

@media (prefers-color-scheme: dark){
  :root{
    --paper:#0d151d;
    --card:#151f29;
    --ink:#e7eef4;
    --ink-2:#b6c5d2;
    --muted:#8194a5;
    --line:#243240;
    --line-2:#1c2833;
    --accent:#d99a45;
    --accent-soft:#2a2016;
    --pass:#6cc0a0;
    --pass-soft:#152920;
    --fail:#d98b8d;
    --fail-soft:#2a1a1b;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25);
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:60rem;margin:0 auto;padding:0 1.5rem 5rem}
a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent}
a:hover{border-bottom-color:currentColor}
a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
code,pre{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
h1,h2,h3{font-family:Spectral,Georgia,"Times New Roman",serif;font-weight:600;text-wrap:balance;line-height:1.2}

/* topbar */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  flex-wrap:wrap;padding:1.4rem 0;border-bottom:1px solid var(--line);
}
.brand{font-family:Spectral,Georgia,serif;font-size:1.2rem;font-weight:600;letter-spacing:.01em}
.brand .glyph{margin-right:.35rem}
.topnav{display:flex;gap:1.4rem;flex-wrap:wrap;font-size:.9rem}
.topnav a{color:var(--ink-2)}
.topnav a:hover{color:var(--accent)}

/* hero */
.hero{padding:4rem 0 2.5rem}
.eyebrow{
  display:inline-block;font-family:"IBM Plex Mono",monospace;font-size:.72rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:1.4rem;
}
.hero h1{font-size:clamp(2.1rem,5.5vw,3.4rem);margin:0 0 1.2rem;letter-spacing:-.015em}
.hero h1 em{font-style:italic;color:var(--accent)}
.sub{font-size:1.16rem;color:var(--ink-2);max-width:44ch;margin:0 0 2rem}

.expansion{
  border-left:3px solid var(--accent);background:var(--accent-soft);
  padding:1rem 1.25rem;border-radius:0 var(--radius) var(--radius) 0;max-width:52ch;
}
.exp-label{
  display:block;font-family:"IBM Plex Mono",monospace;font-size:.68rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:.35rem;
}
.exp-text{margin:0;font-family:Spectral,Georgia,serif;font-size:1.1rem;line-height:1.45}
.exp-text strong{color:var(--accent)}

/* honesty banner */
.banner{
  display:flex;gap:.9rem;align-items:flex-start;
  border:1px solid var(--line);border-left:3px solid var(--muted);
  background:var(--card);padding:1.1rem 1.25rem;border-radius:0 var(--radius) var(--radius) 0;
  box-shadow:var(--shadow);
}
.banner .ico{flex:0 0 auto;font-size:1.05rem;line-height:1.5}
.banner p{margin:0;font-size:.96rem;color:var(--ink-2)}

/* sections */
section{padding:3.5rem 0 0}
section h2{font-size:clamp(1.5rem,3.2vw,2rem);margin:0 0 .75rem;letter-spacing:-.01em}
.lead{color:var(--ink-2);max-width:60ch;margin:0 0 2rem}

/* the three nevers */
.nevers{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr))}
.ncard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.35rem;box-shadow:var(--shadow);
}
.nlabel{
  display:inline-block;font-family:"IBM Plex Mono",monospace;font-size:.66rem;
  letter-spacing:.16em;text-transform:uppercase;color:var(--fail);
  background:var(--fail-soft);padding:.2rem .5rem;border-radius:4px;margin-bottom:.7rem;
}
.ncard h3{font-size:1.16rem;margin:0 0 .5rem}
.ncard p{margin:0;font-size:.93rem;color:var(--ink-2)}

/* SELF loop */
.self{list-style:none;padding:0;margin:0;display:grid;gap:.9rem}
.self li{
  display:flex;gap:1.15rem;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.3rem;box-shadow:var(--shadow);
}
.step{
  flex:0 0 auto;width:2.4rem;height:2.4rem;display:grid;place-items:center;
  font-family:Spectral,Georgia,serif;font-size:1.3rem;font-weight:600;
  color:var(--accent);background:var(--accent-soft);
  border-radius:50%;border:1px solid var(--accent);
}
.self h3{font-size:1.12rem;margin:.15rem 0 .4rem}
.self p{margin:0;font-size:.94rem;color:var(--ink-2)}

/* flow diagram */
.flow{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.5rem;box-shadow:var(--shadow);overflow-x:auto;
}
.frow{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;margin-bottom:.9rem}
.frow.branch{padding-left:1.5rem;border-left:2px dashed var(--line);margin-left:.6rem}
.node{
  font-family:"IBM Plex Mono",monospace;font-size:.8rem;
  border:1px solid var(--line);border-radius:6px;padding:.42rem .7rem;
  background:var(--paper);white-space:nowrap;
}
.node.emph{border-color:var(--accent);color:var(--accent);font-weight:500}
.node.gate{border-style:dashed;color:var(--muted)}
.arrow{color:var(--muted);font-size:.95rem}
.verdict{
  font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.1em;
  padding:.32rem .6rem;border-radius:5px;white-space:nowrap;
}
.verdict.pass{color:var(--pass);background:var(--pass-soft);border:1px solid var(--pass)}
.verdict.fail{color:var(--fail);background:var(--fail-soft);border:1px solid var(--fail)}
.loopback{margin:1.1rem 0 0;font-size:.9rem;color:var(--muted);font-style:italic}

/* contracts table */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow)}
.ctable{border-collapse:collapse;width:100%;min-width:34rem;font-size:.92rem}
.ctable th,.ctable td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:top}
.ctable thead th{
  font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);background:var(--paper);
  border-bottom:1px solid var(--line);
}
.ctable tbody tr:last-child td{border-bottom:none}
.ctable td:first-child{font-weight:500;white-space:nowrap}
.ctable code{font-size:.85rem;color:var(--accent)}

.rules{margin-top:2rem}
.rules h3{font-size:1.1rem;margin:0 0 .7rem}
.rules ul{margin:0;padding-left:1.15rem;color:var(--ink-2);font-size:.93rem}
.rules li{margin-bottom:.4rem}

/* conformance levels */
.levels{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr))}
.lcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.35rem;box-shadow:var(--shadow);
}
.lnum{
  display:block;font-family:"IBM Plex Mono",monospace;font-size:.72rem;
  letter-spacing:.16em;color:var(--accent);margin-bottom:.5rem;
}
.lcard h3{font-size:1.1rem;margin:0 0 .65rem}
.lcard ul{margin:0;padding-left:1.05rem;font-size:.89rem;color:var(--ink-2)}
.lcard li{margin-bottom:.38rem}

/* docs */
.docs{display:grid;gap:.75rem;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr))}
.dcard{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:1rem 1.1rem;box-shadow:var(--shadow);
  color:var(--ink);border-bottom:1px solid var(--line);
}
.dcard:hover{border-color:var(--accent);border-bottom-color:var(--accent)}
.dname{
  display:block;font-family:"IBM Plex Mono",monospace;font-size:.78rem;
  letter-spacing:.09em;color:var(--accent);margin-bottom:.3rem;
}
.ddesc{display:block;font-size:.9rem;color:var(--ink-2)}

.quick{margin-top:2rem}
.qlabel{
  display:block;font-family:"IBM Plex Mono",monospace;font-size:.7rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:.6rem;
}
.quick pre{
  margin:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.1rem 1.25rem;overflow-x:auto;font-size:.86rem;line-height:1.7;box-shadow:var(--shadow);
}
.quick code{color:var(--ink-2)}

/* related */
.rel{margin:0;padding-left:1.15rem;color:var(--ink-2)}
.rel li{margin-bottom:.5rem}

/* footer */
footer{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--line)}
.fclaim{font-size:.93rem;color:var(--ink-2);max-width:66ch;margin:0 0 1.2rem}
.fmeta{font-size:.85rem;color:var(--muted);margin:0}
.fmeta a{color:var(--muted)}
.fmeta a:hover{color:var(--accent)}

@media (max-width:34rem){
  body{font-size:16px}
  .hero{padding:2.5rem 0 2rem}
  .self li{flex-direction:column;gap:.75rem}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}