/* ============================================================
   Appostar Ltd
   palette : graphite ground, brass mechanism, cold optic cyan
   type    : Space Grotesk (display/body) + JetBrains Mono (data)
   layout  : machine fixed centre-right, reading panel fixed left
   ============================================================ */

:root{
  --ink:#06080b;
  --iron:#0d1117;
  --line:#1c232b;
  --brass:#c9973f;
  --brass-lt:#f0c877;
  --optic:#7fd4d8;
  --bone:#ece7dc;
  --slate:#8b939c;
  --win-x:36vw; --win-y:11vh; --win-w:60vw; --win-h:78vh;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--ink);color:var(--bone);
  font-family:"Space Grotesk",system-ui,sans-serif;
  overflow:hidden;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--brass-lt);outline-offset:4px;border-radius:2px}

/* ---------- machine ---------- */
#machine{position:fixed;inset:0;width:100%;height:100%;z-index:1;pointer-events:none}
.bezel{
  position:fixed;z-index:2;pointer-events:none;
  left:var(--win-x);top:var(--win-y);width:var(--win-w);height:var(--win-h);
  border:1px solid #ffffff10;border-radius:24px;
  box-shadow:inset 0 0 120px #000000b0, 0 0 140px #c9973f0a;
}
.bezel .c{position:absolute;width:26px;height:26px;border:1px solid var(--brass);opacity:.5}
.bezel .tl{top:-1px;left:-1px;border-width:1px 0 0 1px;border-radius:24px 0 0 0}
.bezel .tr{top:-1px;right:-1px;border-width:1px 1px 0 0;border-radius:0 24px 0 0}
.bezel .bl{bottom:-1px;left:-1px;border-width:0 0 1px 1px;border-radius:0 0 0 24px}
.bezel .br{bottom:-1px;right:-1px;border-width:0 1px 1px 0;border-radius:0 0 24px 0}
.vignette{
  position:fixed;inset:0;z-index:3;pointer-events:none;
  background:radial-gradient(ellipse 58% 62% at
    calc(var(--win-x) + var(--win-w)/2) calc(var(--win-y) + var(--win-h)/2),
    transparent 0%, transparent 38%, #06080b9e 66%, #06080bf0 100%);
}

/* ---------- instrument readouts ---------- */
.hud,.plate-title{
  position:fixed;z-index:4;pointer-events:none;
  font-family:"JetBrains Mono",monospace;
}
.hud{
  left:calc(var(--win-x) + 6px);top:calc(var(--win-y) + var(--win-h) + 16px);
  display:flex;gap:30px;font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;
}
.hud span{color:#5c656e;display:block}
.hud b{color:var(--brass-lt);font-size:13px;font-weight:500;letter-spacing:.05em}
.plate-title{
  left:calc(var(--win-x) + 22px);top:calc(var(--win-y) + 18px);
  font-size:11px;letter-spacing:.42em;color:var(--brass);
}

/* ---------- header ---------- */
.header{
  position:fixed;inset:0 0 auto;z-index:30;height:80px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(20px,4vw,54px);
  background:linear-gradient(#06080bf0,#06080b00);
}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:15px;letter-spacing:.34em}
.mark{width:12px;height:12px;border:1.5px solid var(--brass);transform:rotate(45deg);box-shadow:0 0 0 3px #c9973f1c}
.nav{display:flex;gap:clamp(12px,2vw,30px)}
.nav a{
  position:relative;padding:24px 0 22px;
  font-family:"JetBrains Mono",monospace;font-size:11px;
  letter-spacing:.16em;text-transform:uppercase;color:#79828c;transition:color .25s;
}
.nav a i{font-style:normal;display:block;font-size:9px;color:#39414a;margin-bottom:3px}
.nav a:hover{color:var(--bone)}
.nav a.on{color:var(--brass-lt)}
.nav a.on i{color:var(--brass)}
.nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:16px;height:1px;background:var(--brass)}

/* ---------- reading panel (fixed, never moves) ---------- */
.panel{
  position:fixed;z-index:20;left:5vw;top:50%;
  width:clamp(280px,27vw,400px);max-height:78vh;
  transform:translateY(-50%);
  perspective:1100px;
}
.panel-inner{
  transform-origin:0% 50%;
  transition:transform .3s cubic-bezier(.4,0,.2,1), opacity .28s;
  max-height:78vh;overflow-y:auto;scrollbar-width:none;
  padding-left:20px;border-left:1px solid var(--line);
}
.panel-inner::-webkit-scrollbar{display:none}
.panel-inner.flip-out{transform:rotateY(-64deg);opacity:0}
.panel-inner.flip-in{transform:rotateY(44deg);opacity:0}
.panel-inner.fade-out{opacity:0;transform:translateY(-10px)}
.panel-inner.fade-in{opacity:0;transform:translateY(10px)}

.rail{
  margin:0 0 26px;font-family:"JetBrains Mono",monospace;
  font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:#5c656e;
}
.panel-inner .k{
  margin:0 0 14px;font-family:"JetBrains Mono",monospace;
  font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--brass);
}
.panel-inner h2{
  margin:0 0 18px;font-size:clamp(28px,3.1vw,42px);
  font-weight:500;line-height:1;letter-spacing:-.032em;
}
.panel-inner p{margin:0 0 14px;color:#bfc4c2;font-size:15px;line-height:1.6}
.panel-inner p b{color:var(--bone);font-weight:600}
.panel-inner .tag{
  font-family:"JetBrains Mono",monospace;font-size:9.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--optic);margin-bottom:16px;
}
.panel-inner .hint{
  margin-top:22px;padding-top:14px;border-top:1px solid var(--line);
  font-family:"JetBrains Mono",monospace;font-size:10px;
  letter-spacing:.14em;text-transform:uppercase;color:#5c656e;
}
.shot{margin:0 0 20px}
.shot-crop{
  position:relative;display:block;width:100%;aspect-ratio:10/11;
  overflow:hidden;border:1px solid var(--line);background:#0a0d12;
  mask-image:linear-gradient(#000 84%,transparent 100%);
  -webkit-mask-image:linear-gradient(#000 84%,transparent 100%);
}
.shot-crop img{
  position:absolute;left:50%;top:-11%;width:142%;
  transform:translateX(-50%);display:block;
  filter:grayscale(1) contrast(1.06);
}
.shot figcaption{
  margin-top:12px;font-family:"JetBrains Mono",monospace;font-size:10px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--brass);
}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.btn{
  display:inline-flex;align-items:center;min-height:42px;padding:0 22px;margin-top:6px;
  border:1px solid var(--brass);border-radius:2px;cursor:pointer;
  background:linear-gradient(#c9973f22,#c9973f08);color:var(--brass-lt);
  font-family:"JetBrains Mono",monospace;font-size:10.5px;
  letter-spacing:.14em;text-transform:uppercase;transition:background .25s,color .25s;
}
.btn:hover{background:var(--brass);color:#0a0c0f}

/* ---------- hotspots: the mechanism is the navigation ---------- */
.spots{position:fixed;inset:0;z-index:15;pointer-events:none}
.spot{
  position:fixed;left:0;top:0;width:0;height:0;
  border:0;background:none;padding:0;font:inherit;color:inherit;
  transition:opacity .4s;
}
.spot.hidden{opacity:0;pointer-events:none}
.spot .dot,.spot .tag{pointer-events:auto;cursor:pointer}
.spot .dot{
  position:absolute;left:-5px;top:-5px;width:10px;height:10px;border-radius:50%;
  border:1px solid var(--brass);background:var(--ink);transition:all .2s;
}
.spot .lead{position:absolute;left:7px;top:0;width:24px;height:1px;background:#c9973f77}
.spot .tag{
  position:absolute;left:33px;top:-10px;white-space:nowrap;
  font-family:"JetBrains Mono",monospace;font-size:10px;
  letter-spacing:.14em;text-transform:uppercase;color:#b9bdbb;
  border:1px solid #ffffff14;border-radius:2px;padding:3px 8px;
  background:#06080bc7;transition:all .2s;
}
.spot.left .lead{left:auto;right:7px}
.spot.left .tag{left:auto;right:33px}
.spot:hover .dot,.spot.on .dot{background:var(--brass-lt);box-shadow:0 0 0 5px #c9973f24}
.spot:hover .tag,.spot.on .tag{color:#0a0c0f;background:var(--brass-lt);border-color:transparent}
.spot--flat{
  border:1px solid transparent;border-radius:3px;cursor:pointer;pointer-events:auto;
  transition:opacity .4s,border-color .2s,background .2s;
}
.spot--flat:hover,.spot--flat.on{border-color:#c9973f4d;background:#c9973f0f}

/* ---------- footer ---------- */
.footer{
  position:fixed;inset:auto 0 0;z-index:20;display:flex;justify-content:space-between;
  padding:0 clamp(20px,4vw,54px) 20px;
  font-family:"JetBrains Mono",monospace;font-size:10px;
  letter-spacing:.14em;text-transform:uppercase;color:#49525b;pointer-events:none;
}

/* ---------- narrow screens: one plain document ---------- */
.doc{display:none}
@media (max-width:1040px){
  body{overflow:auto}
  #machine{opacity:.3}
  .bezel,.hud,.plate-title,.footer,.panel,.spots{display:none}
  .vignette{background:linear-gradient(#06080b33 0%,#06080bd9 45%,#06080b 100%)}
  .header{position:sticky;height:auto;padding:16px clamp(16px,5vw,24px);
    flex-direction:column;align-items:flex-start;gap:10px;background:var(--ink)}
  .nav{flex-wrap:wrap;gap:16px}
  .nav a{padding:4px 0}
  .nav a.on::after{bottom:-2px}
  .doc{display:block;position:relative;z-index:10;padding:20px clamp(16px,5vw,24px) 80px}
  .doc section{padding:34px 0;border-top:1px solid var(--line)}
  .doc section:first-child{border-top:0}
  .doc h2{margin:0 0 14px;font-size:clamp(26px,7vw,38px);font-weight:500;
    line-height:1.02;letter-spacing:-.03em}
  .doc p{margin:0 0 12px;color:#bfc4c2;font-size:15px;line-height:1.6;max-width:60ch}
  .doc .k{margin:0 0 10px;font-family:"JetBrains Mono",monospace;font-size:10px;
    letter-spacing:.2em;text-transform:uppercase;color:var(--brass)}
  .doc .rail{margin:0 0 20px}
  .doc .tag{font-family:"JetBrains Mono",monospace;font-size:9.5px;letter-spacing:.16em;
    text-transform:uppercase;color:var(--optic)}
  .doc-item{padding:22px 0 4px;border-top:1px solid #ffffff0d}
  .doc .shot{max-width:340px}
}

@media (prefers-reduced-motion:reduce){
  .panel-inner{transition:none}
  .spot{transition:none}
}