:root{
  --void:#06070a; --ink:#0b0d12; --paper:#efe7d6; --dim:rgba(239,231,214,.66); --faint:rgba(239,231,214,.32); --line:rgba(239,231,214,.13);
  --amber:#f2b45a; --amber-hi:#ffd38a; --teal:#62d6c4;
  --display:'Fraunces',Georgia,'Times New Roman',serif; --sans:'Inter',system-ui,-apple-system,sans-serif; --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--void);color:var(--paper);font-family:var(--sans);overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit}
::selection{background:var(--amber);color:#111}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

#scene{position:fixed;inset:0;width:100vw;height:100vh;display:block;z-index:0}
.fallback{position:fixed;inset:0;z-index:0;background:radial-gradient(60% 50% at 50% 55%,#2a1d0b 0%,var(--void) 70%)}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(130% 100% at 50% 45%,transparent 48%,rgba(0,0,0,.82) 100%)}
.grain{position:fixed;inset:-50%;z-index:1;pointer-events:none;opacity:.055;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1s steps(5) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(-3%,2%)}50%{transform:translate(2%,-3%)}75%{transform:translate(-1%,3%)}}
.curtain{position:fixed;inset:0;z-index:60;background:#000;pointer-events:none;transition:opacity 1.6s ease}
.curtain.up{opacity:0}

/* nawigacja */
header{position:fixed;top:0;left:0;right:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px clamp(16px,3.5vw,44px);transition:background .4s,backdrop-filter .4s}
header.solid{background:rgba(6,7,10,.72);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand svg{width:30px;height:30px;flex:none}
.brand b{font:500 23px/1 var(--display);letter-spacing:.005em}
.brand b i{font-style:italic;color:var(--amber)}
nav{display:flex;gap:24px;align-items:center}
nav a{font:500 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;color:var(--dim);transition:color .25s}
nav a:hover{color:var(--paper)}
nav .lang{border:1px solid var(--line);padding:7px 9px}
nav .lang:hover{border-color:var(--amber)}

.btn{position:relative;display:inline-flex;align-items:center;gap:12px;padding:16px 26px;font:500 13px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;
  text-decoration:none;border:1px solid rgba(239,231,214,.5);color:var(--paper);overflow:hidden;isolation:isolate;transition:color .35s,border-color .35s}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--paper);transform:translateY(101%);transition:transform .45s cubic-bezier(.7,0,.2,1)}
.btn:hover{color:#111}
.btn:hover::before{transform:none}
.btn.gold{background:var(--amber);border-color:var(--amber);color:#14100a;box-shadow:0 18px 60px -14px rgba(242,180,90,.75)}
.btn.gold::before{background:var(--paper)}
.arr{display:inline-block;transition:transform .35s}
.btn:hover .arr{transform:translateY(3px)}

/* sekcje */
main{position:relative;z-index:10}
section{position:relative;min-height:100vh;padding:120px clamp(16px,6vw,96px)}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font:500 12px/1 var(--mono);letter-spacing:.22em;text-transform:uppercase;color:var(--amber)}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--amber);border-radius:50%;box-shadow:0 0 14px var(--amber)}
h1,h2{font-family:var(--display);font-weight:300;letter-spacing:-.015em}
h1 em,h2 em{font-style:italic;color:var(--amber-hi);font-weight:300}
.lede{font:400 clamp(17px,1.35vw,20px)/1.65 var(--sans);color:var(--dim);max-width:34em}
.lede strong{color:var(--paper);font-weight:600}
.ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* HERO */
#start{display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:9vh}
#start::after{content:"";position:absolute;left:0;right:0;bottom:0;height:55%;z-index:-1;pointer-events:none;background:linear-gradient(transparent,rgba(6,7,10,.7) 45%,rgba(6,7,10,.94))}
#start h1{font-size:clamp(46px,7.4vw,124px);line-height:.95;max-width:11.5em;margin:22px 0 26px}
.hint{position:absolute;right:clamp(16px,6vw,96px);bottom:9vh;font:500 11px/1.6 var(--mono);letter-spacing:.2em;color:var(--faint);text-transform:uppercase;text-align:right}
.hint i{display:block;width:1px;height:46px;background:linear-gradient(var(--amber),transparent);margin:10px 0 0 auto;animation:drip 2.2s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.slam{opacity:0;transform:translateY(26px);filter:blur(12px);transition:opacity 1s ease,transform 1.2s cubic-bezier(.2,.8,.2,1),filter 1s}
.slam.in{opacity:1;transform:none;filter:none}

/* rozdziały Stratega */
.chap{display:flex;align-items:center;min-height:150vh}
.chap .card{position:sticky;top:20vh;max-width:600px;padding:36px 0}
.chap.right .card{margin-left:auto}
.chap::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(6,7,10,.9) 0%,rgba(6,7,10,.55) 42%,transparent 70%)}
.chap.right::before{background:linear-gradient(270deg,rgba(6,7,10,.9) 0%,rgba(6,7,10,.55) 42%,transparent 70%)}
.chap h2{font-size:clamp(40px,5.2vw,84px);line-height:1;margin:22px 0 24px}
.num{font:300 clamp(80px,11vw,170px)/.85 var(--display);color:var(--amber);text-shadow:0 0 60px rgba(242,180,90,.4);font-style:italic}
.num small{font:500 13px/1 var(--mono);letter-spacing:.2em;color:var(--dim);font-style:normal;text-transform:uppercase;margin-left:10px;vertical-align:middle}
.cite{position:fixed;z-index:12;left:0;top:0;pointer-events:none;opacity:0;transition:opacity .4s;font:500 11px/1.5 var(--mono);letter-spacing:.08em;color:var(--amber-hi);
  padding:10px 12px;border:1px solid rgba(242,180,90,.55);background:rgba(6,7,10,.78);backdrop-filter:blur(8px);white-space:nowrap;transform:translate(14px,-50%)}
.cite::before{content:"";position:absolute;left:-14px;top:50%;width:14px;height:1px;background:var(--amber)}
.cite b{display:block;color:var(--paper);font-weight:500}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.chips span{font:500 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--teal);border:1px solid rgba(98,214,196,.4);padding:9px 11px;background:rgba(6,7,10,.6)}

/* budowa z Claude */
#build{display:flex;align-items:center}
#build .panel{max-width:1120px;margin:0 auto;background:rgba(8,9,13,.84);backdrop-filter:blur(14px);border:1px solid var(--line);padding:clamp(24px,4.4vw,60px)}
#build h2{font-size:clamp(36px,4.6vw,72px);line-height:1.02;margin:20px 0 14px}
.steps{list-style:none;margin-top:34px;border-top:1px solid var(--line);counter-reset:s}
.steps li{position:relative;display:grid;grid-template-columns:70px 1fr auto;gap:18px;align-items:center;padding:22px 6px;border-bottom:1px solid var(--line);isolation:isolate}
.steps li::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(242,180,90,.18),transparent);transform:scaleX(0);transform-origin:left;transition:transform .55s cubic-bezier(.7,0,.2,1)}
.steps li:hover::before{transform:scaleX(1)}
.steps .n{font:500 12px/1 var(--mono);color:var(--amber);letter-spacing:.12em}
.steps b{font:400 clamp(22px,2.2vw,34px)/1.05 var(--display)}
.steps p{font:400 15px/1.5 var(--sans);color:var(--dim);margin-top:6px;max-width:34em}
.steps .tag{font:500 11px/1 var(--mono);letter-spacing:.14em;color:var(--faint);text-transform:uppercase}
.split{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}
.split div{border:1px solid var(--line);padding:20px;background:rgba(6,7,10,.6)}
.split small{display:block;font:500 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;margin-bottom:10px}
.split .a small{color:var(--amber)} .split .t small{color:var(--teal)}
.split p{font:400 15px/1.55 var(--sans);color:var(--dim)}

/* o nas */
#about{display:flex;align-items:center}
#about::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(6,7,10,.92) 0%,rgba(6,7,10,.6) 50%,transparent 80%)}
#about .wrap{position:relative;max-width:760px}
.quote{font:300 clamp(36px,4.6vw,74px)/1.02 var(--display);margin:24px 0 26px}
.quote em{font-style:italic;color:var(--amber-hi)}

/* kontakt */
#contact{display:flex;flex-direction:column;justify-content:flex-end;align-items:center;text-align:center;min-height:110vh;padding-bottom:12vh}
#contact::after{content:"";position:absolute;left:0;right:0;bottom:0;height:62%;z-index:-1;pointer-events:none;background:linear-gradient(transparent,rgba(6,7,10,.78) 35%,rgba(6,7,10,.96))}
#contact h2{font-size:clamp(44px,6.6vw,112px);line-height:.98;margin:20px 0 30px}
.mail{font:300 clamp(26px,3.2vw,46px)/1 var(--display);text-decoration:none;border-bottom:1px solid rgba(242,180,90,.5);padding-bottom:8px;transition:color .3s,border-color .3s}
.mail:hover{color:var(--amber-hi);border-color:var(--amber)}
.addr{margin-top:26px;font:500 12px/1.6 var(--mono);letter-spacing:.12em;color:var(--dim);text-transform:uppercase}

footer{position:relative;z-index:10;background:#030304;border-top:1px solid rgba(242,180,90,.45);padding:30px clamp(16px,6vw,96px);display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
footer p{font:400 13px/1.7 var(--sans);color:var(--faint)}
footer p strong{color:var(--dim);font-weight:600}
footer .r{text-align:right}

.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s cubic-bezier(.2,.8,.2,1),transform .9s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* dźwięk */
.snd{position:fixed;right:clamp(16px,2.4vw,32px);bottom:22px;z-index:40;display:flex;align-items:center;gap:10px;cursor:pointer;
  padding:11px 15px;border:1px solid var(--line);background:rgba(6,7,10,.75);backdrop-filter:blur(10px);font:500 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--dim);transition:color .3s,border-color .3s}
.snd:hover{color:var(--paper);border-color:var(--amber)}
.snd[aria-pressed="true"]{color:var(--amber-hi);border-color:rgba(242,180,90,.6)}
.snd .eq{display:flex;align-items:flex-end;gap:2px;height:12px}
.snd .eq i{width:2px;height:3px;background:currentColor;transition:height .3s}
.snd[aria-pressed="true"] .eq i{animation:eq 1s ease-in-out infinite}
.snd[aria-pressed="true"] .eq i:nth-child(2){animation-delay:-.3s}.snd[aria-pressed="true"] .eq i:nth-child(3){animation-delay:-.6s}.snd[aria-pressed="true"] .eq i:nth-child(4){animation-delay:-.15s}
@keyframes eq{0%,100%{height:3px}50%{height:12px}}
.snd.nudge[aria-pressed="false"]{animation:nudge 2.4s ease-in-out 3}
@keyframes nudge{0%,100%{box-shadow:0 0 0 0 rgba(242,180,90,0)}50%{box-shadow:0 0 0 8px rgba(242,180,90,.18);border-color:var(--amber);color:var(--paper)}}
.with-sound{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font:500 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--faint);text-decoration:none;cursor:pointer;background:none;border:0}
.with-sound:hover{color:var(--amber-hi)}

@media (max-width:900px){
  nav a:not(.lang){display:none}
  .chap{min-height:130vh}
  .chap .card{top:auto}
  .chap::before,.chap.right::before{background:linear-gradient(0deg,rgba(6,7,10,.94) 0%,rgba(6,7,10,.7) 55%,rgba(6,7,10,.2) 100%)}
  .chap{align-items:flex-end}
  .steps li{grid-template-columns:44px 1fr}
  .steps .tag{display:none}
  .split{grid-template-columns:1fr}
  footer{grid-template-columns:1fr}
  footer .r{text-align:left}
  .hint{display:none}
}
@media (prefers-reduced-motion:reduce){
  .grain{animation:none}
  .slam,.reveal{transition:none;opacity:1;transform:none;filter:none}
}
html.no3d #scene{display:none}