/* Wirtualny Gorzów – wspólny styl gier z elektroniki (.ek) */
.ek{--bg:#0b1530;--card:#13224a;--card2:#182b5c;--line:#2a447f;--text:#eaf2ff;--muted:#a3b6dc;--volt:#ffd23f;--amp:#35d6ff;--ohm:#ff9a3c;--ok:#34d399;--bad:#fb7185;--acc:#ffd23f;--accink:#2a2000;--glow:#4a2a10;
 font-family:'Nunito',system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--text);line-height:1.5;font-size:16px;text-align:left;
 background:radial-gradient(1000px 560px at 10% -10%,#1f3f86 0%,transparent 60%),radial-gradient(800px 480px at 110% 0%,var(--glow) 0%,transparent 55%),var(--bg);
 padding:22px;border-radius:26px;max-width:1180px;margin:0 auto}
.ek *{box-sizing:border-box}
.ek [hidden]{display:none!important}
.ek h1,.ek h2,.ek h3{font-family:'Fredoka','Nunito',sans-serif;margin:0;line-height:1.15;color:var(--text);letter-spacing:.2px;text-transform:none}
.ek p{margin:0}
.ek button{font:inherit;cursor:pointer;text-transform:none;letter-spacing:normal;line-height:1.2;min-height:0;width:auto;box-shadow:none}
.ek button:focus-visible,.ek input:focus-visible,.ek [tabindex]:focus-visible{outline:3px solid var(--acc);outline-offset:2px}
.ek svg{display:block;width:100%;height:auto;overflow:visible}
.ek svg text{font-family:'Nunito',sans-serif;font-weight:800}
.ek .hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:22px;align-items:center;margin-bottom:18px}
.ek .hero h1{font-size:clamp(34px,5.4vw,58px);font-weight:700}
.ek .hero p{color:var(--muted);font-size:17px;margin-top:10px;max-width:46ch}
.ek .steps{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 16px}
.ek .steps button{display:flex;align-items:center;gap:8px;padding:9px 14px 9px 9px;border-radius:999px;border:1px solid var(--line);background:var(--card2);color:var(--muted);font-weight:800;font-size:15px}
.ek .steps button i{font-style:normal;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:#0b1530;color:var(--muted);font-size:13px}
.ek .steps button:hover{color:var(--text);border-color:#3d5fa8;background:var(--card2)}
.ek .steps button[aria-selected=true]{background:var(--acc);border-color:var(--acc);color:var(--accink)}
.ek .steps button[aria-selected=true] i{background:var(--accink);color:var(--acc)}
.ek .steps button.done i{background:var(--ok);color:#06281c}
.ek .pane{display:none}
.ek .pane.on{display:block}
.ek .card{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015)),var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 16px 40px rgba(0,0,0,.28)}
.ek .grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);gap:18px}
.ek .pane h2{font-size:26px;margin-bottom:6px}
.ek .lead{color:var(--muted);margin-bottom:14px;max-width:72ch}
.ek .stage{border-radius:16px;background:radial-gradient(520px 260px at 50% 40%,#132e63,#0a1633);padding:10px}
.ek .facts{display:flex;flex-direction:column;gap:12px}
.ek .fact{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border-radius:16px;background:var(--card2);border:1px solid var(--line)}
.ek .fact .ic{flex:0 0 38px;height:38px;border-radius:12px;display:grid;place-items:center;font-size:20px;background:#0b1530}
.ek .fact b{display:block;font-size:16px}
.ek .fact span{color:var(--muted);font-size:14.5px}
.ek .btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:14px;border:0;font-weight:800;font-size:16px;background:var(--acc);color:var(--accink)}
.ek .btn:hover{filter:brightness(1.08);background:var(--acc);color:var(--accink)}
.ek .btn.ghost{background:transparent;border:1.5px solid var(--line);color:var(--text)}
.ek .btn.ghost:hover{border-color:var(--muted);background:transparent;color:var(--text)}
.ek .btn.on{background:var(--ok);color:#06281c}
.ek .row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.ek .next{display:flex;justify-content:flex-end;margin-top:16px}
.ek .msg{margin-top:12px;padding:12px 14px;border-radius:14px;background:#0b1530;border:1px solid var(--line);font-weight:700;min-height:48px}
.ek .msg.ok{border-color:var(--ok);color:#bff5de}
.ek .msg.bad{border-color:var(--bad);color:#ffd2da}
.ek .sl{margin-bottom:14px}
.ek .sl label{display:flex;justify-content:space-between;align-items:baseline;gap:10px;font-weight:800;margin-bottom:4px}
.ek .sl label output{font-family:'Fredoka',sans-serif;font-size:21px;color:var(--c,var(--acc));white-space:nowrap}
.ek input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:30px;background:transparent;margin:0;padding:0;--c:var(--acc)}
.ek .sl{--c:var(--acc)}
.ek .sl input{--c:inherit}
.ek input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:8px;background:#0b1530;border:1px solid var(--line)}
.ek input[type=range]::-moz-range-track{height:8px;border-radius:8px;background:#0b1530;border:1px solid var(--line)}
.ek input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;margin-top:-9px;border-radius:50%;background:var(--c);border:3px solid #0b1530;box-shadow:0 0 0 2px var(--c)}
.ek input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--c);border:3px solid #0b1530}
.ek .big{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 10px;padding:14px 16px;border-radius:16px;background:#0b1530;border:1px solid var(--line);margin-bottom:12px}
.ek .big b{font-family:'Fredoka',sans-serif;font-size:32px;color:var(--c,var(--amp));line-height:1}
.ek .big span{color:var(--muted);font-weight:700}
.ek .formula{font-family:'Fredoka',sans-serif;font-size:19px;margin-bottom:10px}
.ek .note{font-size:14.5px;color:var(--muted)}
.ek .note+.note{margin-top:8px}
.ek .warn{color:#ffd2a1}
.ek .tabs2{display:inline-flex;flex-wrap:wrap;padding:4px;border-radius:14px;background:#0b1530;border:1px solid var(--line);margin-bottom:12px}
.ek .tabs2 button{padding:9px 14px;border-radius:10px;border:0;background:transparent;color:var(--muted);font-weight:800}
.ek .tabs2 button:hover{background:transparent;color:var(--text)}
.ek .tabs2 button[aria-selected=true]{background:var(--card2);color:var(--text)}
.ek .clk{cursor:pointer}
.ek .types{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.ek .types button{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 8px;border-radius:16px;border:1.5px solid var(--line);background:var(--card2);color:var(--text);font-weight:800;font-size:15px;text-align:center}
.ek .types button:hover{border-color:var(--muted);background:var(--card2);color:var(--text)}
.ek .types button[aria-pressed=true]{border-color:var(--acc);box-shadow:0 0 0 2px var(--acc) inset}
.ek .types svg{width:100%;max-width:120px;height:70px}
.ek .detail{padding:16px;border-radius:18px;background:#0b1530;border:1px solid var(--line)}
.ek .detail h3{font-size:22px;margin-bottom:6px;color:var(--acc)}
.ek .detail p{color:var(--text)}
.ek .detail p+p{margin-top:8px}
.ek .detail .tag{display:inline-block;margin:10px 6px 0 0;padding:4px 10px;border-radius:999px;background:var(--card2);border:1px solid var(--line);font-size:13.5px;font-weight:800;color:var(--muted)}
.ek .bar{display:flex;height:40px;border-radius:12px;overflow:hidden;border:1px solid var(--line);margin:8px 0 4px;background:#0b1530}
.ek .bar div{flex:1 1 0;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:14px;color:#1b1300;transition:flex-grow .35s;min-width:0;white-space:nowrap;overflow:hidden}
.ek .q{padding:16px;border-radius:18px;background:var(--card2);border:1px solid var(--line);margin-bottom:12px}
.ek .q h3{font-size:19px;margin-bottom:10px}
.ek .q .opts{display:flex;flex-wrap:wrap;gap:8px}
.ek .q .opts button{padding:10px 14px;border-radius:12px;border:1.5px solid var(--line);background:#0b1530;color:var(--text);font-weight:700}
.ek .q .opts button:hover{border-color:var(--muted);background:#0b1530;color:var(--text)}
.ek .q .opts button.good{background:#0f3d2d;border-color:var(--ok)}
.ek .q .opts button.wrong{background:#43121d;border-color:var(--bad)}
.ek .q .fb{margin-top:8px;font-weight:700;font-size:15px}
.ek .score{font-family:'Fredoka',sans-serif;font-size:24px;margin-top:6px}
.ek .hot{cursor:pointer}
.ek .hot circle.ring{fill:var(--acc);stroke:#0b1530;stroke-width:3}
.ek .hot:hover circle.ring,.ek .hot:focus circle.ring{fill:#fff}
@keyframes ek-pulse{0%,100%{opacity:1}50%{opacity:.35}}
.ek .pulse{animation:ek-pulse 1.4s ease-in-out infinite}
@media (max-width:860px){
 .ek{padding:14px;border-radius:18px}
 .ek .hero,.ek .grid{grid-template-columns:1fr}
 .ek .steps{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
 .ek .steps::-webkit-scrollbar{display:none}
 .ek .steps button{flex:0 0 auto;font-size:13.5px;padding:7px 11px 7px 7px}
 .ek .types{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){.ek .pulse{animation:none}}