/* Sovereign Systems — sovereign-systems.ca
   Cold = the possibility space. Gold = what survived and can be checked. */

:root{
  --void:#090c12;
  --void-2:#111620;
  --void-3:#171d29;
  --paper:#f5f3ee;
  --paper-2:#fffefb;
  --ink:#12151b;
  --ink-2:#4b515c;
  --ink-3:#7d8390;
  --cold:#7fd4e8;
  --cold-dim:#4c8fa3;
  --gold:#e0a83d;
  --gold-dim:#8a6a28;
  --rule-d:#1f2735;
  --rule-l:#ddd7cb;
  --maxw:1080px;
  --display:"Chivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  --body:"Source Serif 4",Georgia,"Times New Roman",serif;
  --mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
}

*{box-sizing:border-box}
html,body{overflow-x:clip;max-width:100%}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--void);color:#e8eaee;
  font-family:var(--body);font-size:17px;line-height:1.62;
  -webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit}
::selection{background:var(--gold);color:var(--void)}

.skip{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);
  clip-path:inset(50%);white-space:nowrap;background:var(--gold);color:var(--void);
  padding:10px 16px;z-index:99;font-family:var(--display);font-weight:700}
.skip:focus{position:fixed;left:8px;top:8px;width:auto;height:auto;overflow:visible;
  clip:auto;clip-path:none}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

.shell{max-width:var(--maxw);margin:0 auto;padding-inline:22px}

/* ---------- the constraint field ---------- */
#field{
  position:fixed;inset:0;width:100%;height:100vh;height:100dvh;
  z-index:0;pointer-events:none;display:block;
}

/* ---------- hero ---------- */
.hero{
  position:relative;z-index:1;
  min-height:92vh;min-height:92dvh;
  display:flex;flex-direction:column;justify-content:center;
  padding-block:calc(70px + env(safe-area-inset-top,0px)) 70px;
  background:
    linear-gradient(100deg, rgba(9,12,18,.93) 0%, rgba(9,12,18,.78) 38%, rgba(9,12,18,.30) 68%, rgba(9,12,18,.12) 100%),
    linear-gradient(to bottom, rgba(9,12,18,.55) 0%, rgba(9,12,18,0) 26%, rgba(9,12,18,0) 62%, var(--void) 100%);
}
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--cold);margin:0 0 26px;
}
h1{
  font-family:var(--display);font-weight:900;
  font-size:clamp(42px,8.2vw,88px);line-height:.94;letter-spacing:-.025em;
  margin:0 0 26px;text-wrap:balance;
  background:linear-gradient(176deg,#ffffff 20%,#a9b6c6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{
  font-size:clamp(17px,2.1vw,20.5px);color:#c3c9d3;max-width:37ch;margin:0 0 34px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:38px}
.btn{
  display:inline-block;font-family:var(--display);font-weight:700;font-size:14.5px;
  letter-spacing:.02em;padding:13px 22px;border-radius:2px;text-decoration:none;
  border:1.5px solid var(--rule-d);color:#dfe4ec;background:rgba(17,22,32,.72);
  transition:border-color .18s,color .18s,transform .18s;
}
.btn:hover{border-color:var(--cold-dim);color:#fff;transform:translateY(-1px)}
.btn.primary{background:var(--gold);border-color:var(--gold);color:#17120a}
.btn.primary:hover{background:#f0bb52;border-color:#f0bb52;color:#17120a}
.who{
  font-family:var(--mono);font-size:12.5px;color:var(--ink-3);margin:0;letter-spacing:.02em;
}
.who span{color:var(--cold-dim)}
.scroll-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%)}
.scroll-hint span{
  display:block;width:1px;height:38px;
  background:linear-gradient(var(--cold-dim),transparent);
  animation:drop 2.4s ease-in-out infinite;
}
@keyframes drop{0%,100%{opacity:.25;transform:scaleY(.5)}50%{opacity:1;transform:scaleY(1)}}

/* ---------- bands ---------- */
.band{position:relative;z-index:1;background:var(--paper);color:var(--ink);
  padding-block:clamp(64px,9vw,104px);border-top:1px solid var(--rule-l)}
.band.dark{background:var(--void-2);color:#e2e6ec;border-top:1px solid var(--rule-d)}

.sec{
  font-family:var(--display);font-weight:900;letter-spacing:-.02em;
  font-size:clamp(28px,4.4vw,44px);line-height:1;margin:0 0 18px;text-wrap:balance;
}
.sec-lede{font-size:17.5px;max-width:60ch;margin:0 0 44px;color:var(--ink-2)}
.band.dark .sec-lede{color:#9aa3b1}

/* ---------- demos ---------- */
.demos{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:20px;margin-bottom:56px}
.demo{
  display:flex;flex-direction:column;text-decoration:none;color:inherit;
  background:var(--paper-2);border:1px solid var(--rule-l);border-radius:3px;overflow:hidden;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.demo:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(18,21,27,.13);border-color:#c3bbaa}
.demo-art{
  aspect-ratio:3/1.55;display:grid;place-items:center;color:#fff;
  border-bottom:1px solid var(--rule-l);
}
.demo-art svg{width:56%;max-width:190px;height:auto}
.demo-art.kam{background:linear-gradient(140deg,#1d2733,#36506b)}
.demo-art.jack{background:linear-gradient(140deg,#120f24,#3a2560)}
.demo-body{padding:22px 22px 24px}
.demo-body h3{font-family:var(--mono);font-size:17px;font-weight:500;margin:0 0 3px;color:var(--ink)}
.demo-kind{font-family:var(--display);font-weight:700;font-size:11.5px;letter-spacing:.11em;
  text-transform:uppercase;color:var(--ink-3);margin:0 0 13px}
.demo-body p{margin:0 0 15px;font-size:16px;color:var(--ink-2)}
.go{font-family:var(--display);font-weight:700;font-size:13.5px;color:#9a6d12;letter-spacing:.02em}

/* ---------- the offer ---------- */
.offer{display:grid;grid-template-columns:1.55fr 1fr;gap:26px;align-items:start;
  border-top:2px solid var(--ink);padding-top:34px}
.offer h3{font-family:var(--display);font-weight:900;font-size:24px;margin:0 0 14px;letter-spacing:-.01em}
.offer-txt p{margin:0 0 13px;color:var(--ink-2);font-size:16.5px;max-width:54ch}
.offer-txt .plain{color:var(--ink);font-weight:600}
.offer-card{background:var(--ink);color:var(--paper);padding:26px 24px;border-radius:3px}
.offer-k{font-family:var(--display);font-weight:700;font-size:11.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--gold);margin:0 0 12px}
a.mail{font-family:var(--mono);font-size:15.5px;color:#fff;text-decoration:none;
  border-bottom:1.5px solid var(--gold);word-break:break-all;line-height:2}
a.mail:hover{color:var(--gold)}
.offer-note{font-size:14.5px;color:#a8aeb9;margin:16px 0 0}

/* ---------- facts ---------- */
.facts{list-style:none;margin:0;padding:0;display:grid;
  grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:1px;background:var(--rule-d)}
.facts li{background:var(--void-2);padding:22px 20px;display:flex;flex-direction:column;gap:6px}
.f-k{font-family:var(--display);font-weight:700;font-size:11px;letter-spacing:.15em;
  text-transform:uppercase;color:var(--cold-dim)}
.f-v{font-family:var(--mono);font-size:16.5px;color:var(--gold);line-height:1.35}
.f-v a{color:var(--gold);text-decoration:none;border-bottom:1px solid var(--gold-dim)}
.f-v a:hover{border-bottom-color:var(--gold)}
.f-n{font-size:15px;color:#98a1af}

/* ---------- work grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(275px,1fr));gap:22px}
.card{border-left:2px solid var(--gold);padding:2px 0 2px 20px}
.card h3{font-family:var(--display);font-weight:900;font-size:19px;margin:0 0 9px;letter-spacing:-.01em}
.card p{margin:0;font-size:16px;color:var(--ink-2)}

/* ---------- links ---------- */
.links{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:14px}
.links a{display:flex;flex-direction:column;gap:4px;text-decoration:none;
  border:1px solid var(--rule-d);padding:17px 18px;border-radius:3px;
  transition:border-color .18s,background .18s}
.links a:hover{border-color:var(--cold-dim);background:var(--void-3)}
.l-k{font-family:var(--display);font-weight:700;font-size:10.5px;letter-spacing:.15em;
  text-transform:uppercase;color:var(--cold-dim)}
.l-v{font-family:var(--mono);font-size:15px;color:#e6eaf0}

/* ---------- footer ---------- */
footer{position:relative;z-index:1;background:var(--void);border-top:1px solid var(--rule-d);
  padding-block:34px calc(34px + env(safe-area-inset-bottom,0px))}
.foot{display:flex;flex-wrap:wrap;gap:8px 26px;justify-content:space-between;
  font-family:var(--mono);font-size:13px;color:var(--ink-3)}
.foot p{margin:0}
.foot strong{color:#cfd5de;font-weight:500}
.foot a{color:var(--cold-dim);text-decoration:none}
.foot a:hover{color:var(--cold)}

/* ---------- narrow ---------- */
@media (max-width:760px){
  .offer{grid-template-columns:1fr;gap:22px}
  .hero{min-height:88vh;min-height:88dvh}
}
@media (max-width:420px){
  body{font-size:16px}
  .shell{padding-inline:18px}
  .btn{padding:12px 18px}
}

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

/* ============================================================
   THE SOLVER — 3D viewport, console, illustrated tiles
   ============================================================ */

#solver{position:fixed;inset:0;width:100%;height:100vh;height:100dvh;
  z-index:0;pointer-events:none;display:block}
#solver canvas{display:block;width:100%;height:100%}
body.has-3d #field{display:none}

/* ---------- the console ---------- */
.console{
  margin:0 0 30px;max-width:520px;
  border:1px solid var(--rule-d);border-radius:3px;
  background:rgba(9,12,18,.62);backdrop-filter:blur(9px);-webkit-backdrop-filter:blur(9px);
  padding:15px 16px 13px;
}
.con-top{display:flex;flex-wrap:wrap;gap:13px;align-items:center;margin-bottom:13px}
button.run{
  font-family:var(--display);font-weight:700;font-size:13px;letter-spacing:.06em;
  text-transform:uppercase;padding:10px 16px;border-radius:2px;cursor:pointer;
  background:transparent;color:var(--cold);border:1.5px solid var(--cold-dim);
  transition:background .16s,color .16s,border-color .16s;flex:none;
}
button.run:hover{background:var(--cold);color:#06131a;border-color:var(--cold)}
button.run:active{transform:translateY(1px)}
.pr{flex:1 1 180px;min-width:150px;display:flex;flex-direction:column;gap:5px}
.pr span{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}
.pr input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cold-dim),var(--gold));outline:none;cursor:pointer;
}
.pr input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;width:13px;height:13px;border-radius:50%;
  background:var(--gold);border:none;cursor:pointer;box-shadow:0 0 0 4px rgba(224,168,61,.16)}
.pr input[type=range]::-moz-range-thumb{
  width:13px;height:13px;border-radius:50%;background:var(--gold);border:none;cursor:pointer}

.con-read{display:flex;flex-wrap:wrap;gap:4px 18px;font-family:var(--mono);font-size:10px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);
  border-top:1px solid var(--rule-d);padding-top:11px}
.con-read span{display:flex;flex-direction:column;gap:2px}
.con-read b{font-size:16px;font-weight:500;color:var(--cold);letter-spacing:.01em;
  font-variant-numeric:tabular-nums}
.con-read .st b{color:var(--gold)}
.con-note{font-size:13.5px;color:#8d96a4;margin:12px 0 0;line-height:1.5;max-width:46ch}

/* ---------- illustrated work tiles ---------- */
.card{border-left:none;padding:0;background:var(--paper-2);border:1px solid var(--rule-l);
  border-radius:3px;overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(18,21,27,.11);border-color:#c8c0af}
.ill{background:linear-gradient(150deg,#141a25,#243447);color:var(--cold);
  padding:16px 18px 12px;border-bottom:1px solid var(--rule-l)}
.ill svg{display:block;width:100%;max-width:200px;height:auto;margin:0 auto}
.card h3{margin:16px 18px 8px}
.card p{margin:0 18px 18px}
.card:nth-child(2) .ill{background:linear-gradient(150deg,#140f26,#3a2560)}
.card:nth-child(3) .ill{background:linear-gradient(150deg,#101d1a,#1d4a3c)}
.card:nth-child(4) .ill{background:linear-gradient(150deg,#20180f,#4a3520)}
.card:nth-child(5) .ill{background:linear-gradient(150deg,#101724,#1f3a55)}
.card:nth-child(6) .ill{background:linear-gradient(150deg,#1d1410,#4d2c1c);color:var(--gold)}

/* ---------- quiet reveal on scroll ---------- */
.rv{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}

@media (max-width:540px){
  .console{max-width:none}
  .con-read{gap:4px 14px}
  .con-read b{font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
}