/* Bardzo Łatwo — cartoon-electric na ciepłej czerni. Jeden motyw, malowany wprost. */
:root{
  --ink:#141210; --ink-2:#1d1a15; --ink-3:#262119; --hair:#3a3327;
  --bolt:#F5B12A; --bolt-soft:#f7c463; --magenta:#E5389A;
  --cream:#FBEFC9; --cream-dim:#c9bfa2; --cream-faint:#8a8168;
  --red:#E8322A; --ok:#57c08a;
  --shadow:0 2px 0 rgba(0,0,0,.5), 0 16px 40px -18px rgba(0,0,0,.7);
  --edge:0 0 0 1px var(--hair);
  --maxw:920px;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--ink);color:var(--cream);
  font:400 17px/1.65 "Hanken Grotesk","Segoe UI",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:3px solid var(--bolt);outline-offset:3px;border-radius:4px}
h1,h2,h3{font-family:"Bricolage Grotesque","Hanken Grotesk",sans-serif;letter-spacing:-.02em;text-wrap:balance;line-height:1.12}
h1{font-size:clamp(30px,6vw,44px);font-weight:800;margin:0 0 .4em}
h2{font-size:clamp(23px,4vw,30px);font-weight:700;margin:1.8em 0 .5em}
h3{font-size:clamp(18px,3vw,21px);font-weight:700;margin:1.5em 0 .4em}
p{margin:0 0 1em}
mark{background:rgba(245,177,42,.28);color:var(--cream);padding:0 .15em;border-radius:3px}

#pcb{position:fixed;inset:0;width:100%;height:100%;z-index:0;opacity:.4;pointer-events:none}
.glow{position:fixed;left:50%;top:-10%;width:min(760px,120vw);aspect-ratio:1;transform:translateX(-50%);
  background:radial-gradient(circle at 50% 40%,rgba(245,177,42,.16),rgba(229,56,154,.08) 42%,transparent 68%);
  z-index:0;pointer-events:none}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:20;background:rgba(20,18,16,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hair)}
.head-in{max-width:var(--maxw);margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:9px;font:800 18px/1 "Bricolage Grotesque",sans-serif;letter-spacing:-.02em}
.brand img{width:34px;height:34px;object-fit:contain}
.site-nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.site-nav a{padding:8px 11px;border-radius:9px;font:600 14px/1 "Hanken Grotesk",sans-serif;color:var(--cream-dim)}
.site-nav a:hover{background:var(--ink-3);color:var(--cream)}
.site-nav a[aria-current=page]{color:var(--bolt)}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;padding:8px;cursor:pointer;flex-direction:column;gap:5px}
.nav-toggle span{width:22px;height:2px;background:var(--cream);display:block}
.site-search{max-width:var(--maxw);margin:0 auto;padding:0 20px 12px;position:relative}
.site-search svg{position:absolute;left:32px;top:11px;width:18px;height:18px;fill:var(--cream-faint)}
.site-search input{width:100%;padding:10px 14px 10px 40px;border-radius:11px;border:0;
  background:var(--ink-2);box-shadow:var(--edge);color:var(--cream);font:500 15px/1 "Hanken Grotesk",sans-serif}
.site-search input::placeholder{color:var(--cream-faint)}
#search-results{position:absolute;left:20px;right:20px;top:100%;z-index:30;background:var(--ink-2);
  box-shadow:var(--shadow),var(--edge);border-radius:12px;overflow:hidden;margin-top:6px}
#search-results a{display:block;padding:11px 14px;border-bottom:1px solid var(--hair);font-size:14.5px}
#search-results a:last-child{border-bottom:0}
#search-results a:hover,#search-results a.sel{background:var(--ink-3)}
#search-results .cat{font:700 10px/1 "Space Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--bolt)}
#search-results .none{padding:14px;color:var(--cream-faint);font-size:14px}

@media (max-width:720px){
  .nav-toggle{display:flex}
  .site-nav{display:none;width:100%;flex-direction:column;margin:0;order:3}
  .site-nav.open{display:flex}
  .site-nav a{padding:11px 8px;border-bottom:1px solid var(--hair)}
}

/* ---------- layout ---------- */
.wrap{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:34px 20px 60px}
.article{max-width:680px;margin:0 auto}
.breadcrumb{font:700 11px/1.6 "Space Mono",monospace;letter-spacing:.1em;text-transform:uppercase;
  color:var(--cream-faint);margin-bottom:18px;display:flex;gap:8px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--bolt)}
.updated{font:700 11px/1 "Space Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--cream-faint);
  margin:0 0 22px;display:inline-flex;align-items:center;gap:7px}
.updated::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok)}
.label{font:700 11px/1 "Space Mono",monospace;letter-spacing:.3em;color:var(--cream-faint);text-transform:uppercase;
  display:flex;align-items:center;gap:12px;margin:0 0 18px}
.label::after{content:"";flex:1;height:1px;background:var(--hair)}

/* ---------- hero / home ---------- */
.hero{text-align:center;padding:12px 0 8px}
.hero .bolt{width:128px;height:auto;margin:0 auto 12px;filter:drop-shadow(0 8px 24px rgba(245,177,42,.35)) drop-shadow(0 2px 6px rgba(0,0,0,.5))}
.eyebrow{font:700 12px/1 "Space Mono",monospace;letter-spacing:.3em;color:var(--bolt);
  display:inline-flex;align-items:center;gap:.6em;margin-bottom:12px}
.eyebrow::before,.eyebrow::after{content:"";width:22px;height:1px;background:var(--bolt);opacity:.6}
.hero h1{font-size:clamp(40px,12vw,64px);text-shadow:0 3px 0 #000,4px 6px 0 rgba(229,56,154,.26)}
.hero .lede{font-size:19px;color:var(--cream-dim);max-width:34ch;margin:14px auto 0;text-wrap:balance}
.hero .cta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:22px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 20px;border-radius:12px;
  font:700 14.5px/1 "Hanken Grotesk",sans-serif;background:var(--bolt);color:#141210;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 10px 24px -10px rgba(245,177,42,.6);
  transition:transform .15s ease,filter .15s ease}
.btn:hover,.btn:focus-visible{transform:translateY(-2px);filter:brightness(1.05)}
.btn.ghost{background:transparent;color:var(--cream);box-shadow:inset 0 0 0 1.5px var(--hair)}
.btn.pink{background:var(--magenta);color:#fff}
.btn svg{width:16px;height:16px;fill:currentColor}

section.block{margin-top:52px}
.block > .lead{font-size:17px;color:var(--cream-dim)}

/* stat grid */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.stat{background:var(--ink-2);box-shadow:var(--edge);border-radius:12px;padding:14px}
.stat .p{font:700 10px/1 "Space Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--bolt);margin-bottom:7px}
.stat .n{font:700 22px/1 "Space Mono",monospace;color:var(--cream);font-variant-numeric:tabular-nums}
.stat .k{font-size:12px;color:var(--cream-faint);margin-top:5px}
@media (max-width:620px){.stats{grid-template-columns:1fr 1fr}}

/* card grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.card{display:flex;flex-direction:column;gap:6px;background:var(--ink-2);box-shadow:var(--shadow),var(--edge);
  border-radius:15px;padding:18px;transition:transform .16s ease,box-shadow .16s ease,background .16s ease}
.card:hover,.card:focus-visible{transform:translateY(-3px);background:var(--ink-3);
  box-shadow:0 2px 0 rgba(0,0,0,.5),0 22px 46px -18px rgba(0,0,0,.75),0 0 0 1px var(--bolt)}
.card .ic{font-size:24px;line-height:1}
.card h3{margin:6px 0 0;font-size:18px}
.card p{margin:0;font-size:13.5px;color:var(--cream-dim);line-height:1.5}
.card .more{margin-top:auto;padding-top:10px;font:700 11px/1 "Space Mono",monospace;letter-spacing:.1em;
  text-transform:uppercase;color:var(--bolt)}

/* on-page filter */
.pfilter{margin:18px 0 4px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.pfilter input{flex:1;min-width:220px;padding:11px 15px;border-radius:11px;border:0;background:var(--ink-2);box-shadow:var(--edge);color:var(--cream);font:500 15px/1 "Hanken Grotesk",sans-serif}
.pfilter input::placeholder{color:var(--cream-faint)}
#qa-filter-count{font:700 11px/1 "Space Mono",monospace;letter-spacing:.08em;color:var(--cream-faint);text-transform:uppercase}

/* Q&A list */
.qlist{display:flex;flex-direction:column;gap:10px}
.qlist a{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;background:var(--ink-2);
  box-shadow:var(--shadow),var(--edge);border-radius:13px;padding:15px 17px;transition:transform .15s ease,background .15s ease,box-shadow .15s ease}
.qlist a:hover,.qlist a:focus-visible{transform:translateY(-2px);background:var(--ink-3);
  box-shadow:0 2px 0 rgba(0,0,0,.5),0 18px 40px -18px rgba(0,0,0,.7),0 0 0 1px var(--bolt)}
.qlist .qq{font:700 15.5px/1.35 "Hanken Grotesk",sans-serif}
.qlist .qc{font:700 9.5px/1 "Space Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--cream-faint);white-space:nowrap}

/* numbered path */
.path{display:flex;flex-direction:column;gap:10px;counter-reset:step}
.path a{display:grid;grid-template-columns:34px 1fr 14px;align-items:center;gap:14px;background:var(--ink-2);
  box-shadow:var(--shadow),var(--edge);border-radius:14px;padding:14px 16px;transition:transform .16s ease,background .16s ease,box-shadow .16s ease}
.path a:hover,.path a:focus-visible{transform:translateY(-2px);background:var(--ink-3);box-shadow:0 2px 0 rgba(0,0,0,.5),0 20px 42px -18px rgba(0,0,0,.75),0 0 0 1px var(--bolt)}
.path a::before{counter-increment:step;content:counter(step);width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  font:700 15px/1 "Space Mono",monospace;color:#141210;background:linear-gradient(160deg,var(--bolt),#e69a15);box-shadow:inset 0 1px 0 rgba(255,255,255,.4)}
.path .s-name{font:700 15px/1.2 "Bricolage Grotesque",sans-serif}
.path .s-sub{font-size:12.5px;color:var(--cream-dim);margin-top:3px;display:block}
.path .s-arw{color:var(--cream-faint);text-align:right;font-weight:700}

/* toplist */
.toplist{display:flex;flex-direction:column;gap:1px;background:var(--hair);border-radius:14px;overflow:hidden;box-shadow:var(--edge)}
.toplist a{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;background:var(--ink-2);padding:13px 15px;transition:background .15s ease}
.toplist a:hover{background:var(--ink-3)}
.toplist .rank{font:700 13px/1 "Space Mono",monospace;color:var(--bolt)}
.toplist .tt{font:600 14px/1.3 "Hanken Grotesk",sans-serif}
.toplist .vv{font:700 10px/1 "Space Mono",monospace;letter-spacing:.06em;color:var(--cream-faint);white-space:nowrap;text-transform:uppercase}

/* ---------- article body ---------- */
.answer{background:linear-gradient(90deg,rgba(245,177,42,.12),rgba(229,56,154,.06)),var(--ink-2);
  box-shadow:var(--edge);border-left:3px solid var(--bolt);border-radius:12px;padding:18px 20px;margin:0 0 26px;font-size:17px;color:var(--cream)}
.answer strong{color:var(--bolt-soft)}
.prose > *:first-child{margin-top:0}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.3em}
.prose li{margin:.3em 0}
.prose a{color:var(--bolt);text-decoration:underline;text-underline-offset:2px}
.prose blockquote{margin:1.4em 0;padding:12px 16px;border-left:3px solid var(--magenta);background:var(--ink-2);border-radius:0 10px 10px 0;color:var(--cream-dim)}
.prose code{font:600 14px/1 "Space Mono",monospace;background:var(--ink-3);padding:2px 6px;border-radius:5px;color:var(--bolt-soft)}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--hair);padding:9px 12px;text-align:left}
.prose th{background:var(--ink-2);font:700 13px/1.3 "Hanken Grotesk",sans-serif;color:var(--cream)}
.prose h2{border-top:1px solid var(--hair);padding-top:1em}
.callout{background:var(--ink-2);box-shadow:var(--edge);border-radius:12px;padding:16px 18px;margin:1.6em 0;font-size:15px;color:var(--cream-dim)}
.callout.warn{border-left:3px solid var(--red)}
.callout b{color:var(--cream)}

.videobox{margin:26px 0;border-radius:14px;overflow:hidden;box-shadow:var(--shadow),var(--edge);background:#000;aspect-ratio:16/9}
.videobox iframe{width:100%;height:100%;border:0}

.related{margin-top:40px}
.affil{margin:32px 0;background:var(--ink-2);box-shadow:var(--edge);border-radius:13px;padding:16px 18px}
.affil .h{font:700 10px/1 "Space Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--bolt);margin-bottom:8px}
.affil ul{margin:0;padding-left:1.1em;font-size:14.5px}
.affil .disc{font-size:11.5px;color:var(--cream-faint);margin:10px 0 0}

.newsletter{margin:36px 0;background:linear-gradient(120deg,rgba(229,56,154,.14),rgba(245,177,42,.09)),var(--ink-2);
  box-shadow:var(--edge);border-radius:15px;padding:22px}
.newsletter h3{margin:0 0 6px}
.newsletter p{font-size:14px;color:var(--cream-dim);margin:0 0 14px}
.newsletter form{display:flex;gap:8px;flex-wrap:wrap}
.newsletter input{flex:1;min-width:180px;padding:12px 14px;border-radius:11px;border:0;background:var(--ink);box-shadow:var(--edge);color:var(--cream);font:500 15px/1 "Hanken Grotesk",sans-serif}
.form-msg{flex-basis:100%;margin:10px 0 0;font-size:13.5px}
.form-msg.ok{color:var(--ok)}
.form-msg.err{color:var(--red)}
button[disabled]{opacity:.6;cursor:progress}

/* free inline calculators (kalkulator przekroju i podobne) */
.calc{background:var(--ink-2);box-shadow:var(--edge);border-radius:16px;padding:22px;margin:28px 0}
.calc h3{margin:0 0 4px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0 0}
.calc-grid label{display:block;font:700 11px/1.3 "Space Mono",monospace;letter-spacing:.06em;text-transform:uppercase;color:var(--cream-faint);margin-bottom:6px}
.calc-grid input,.calc-grid select{width:100%;padding:11px 13px;border-radius:10px;border:0;background:var(--ink);box-shadow:var(--edge);color:var(--cream);font:500 15px/1 "Hanken Grotesk",sans-serif}
.calc-result{min-height:20px;margin-top:16px;background:linear-gradient(90deg,rgba(245,177,42,.14),rgba(229,56,154,.07)),var(--ink);border-left:3px solid var(--bolt);border-radius:12px;padding:16px 18px;font-size:15.5px;line-height:1.5}
.calc-result:empty{display:none}
.calc-result b{color:var(--bolt-soft);font-size:18px}
.calc-note{font-size:12.5px;color:var(--cream-faint);margin:12px 0 0}
@media (max-width:520px){.calc-grid{grid-template-columns:1fr}}

.wire-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0 0}
.wire-chip{display:flex;align-items:center;gap:12px;background:var(--ink);box-shadow:var(--edge);border-radius:12px;padding:12px 14px}
.wire-chip b{color:var(--cream)}
.wire-chip .swatch{width:34px;height:34px;border-radius:8px;flex:none;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.18),0 2px 0 rgba(0,0,0,.4)}
.wire-note{font-size:12px;color:var(--cream-faint)}
@media (max-width:520px){.wire-grid{grid-template-columns:1fr}}

.pp-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:14px 0 0}
.pp-grid label{display:flex;align-items:center;gap:10px;background:var(--ink);box-shadow:var(--edge);border-radius:10px;padding:10px 13px;font-size:14px;color:var(--cream-dim);cursor:pointer}
.pp-grid label:has(input:checked){color:var(--cream);background:var(--ink-3)}
.pp-grid input{width:16px;height:16px;flex:none;accent-color:var(--bolt)}
@media (max-width:520px){.pp-grid{grid-template-columns:1fr}}

.panel{background:var(--ink-2);box-shadow:var(--edge);border-radius:16px;padding:22px}
.panel h2{margin-top:0}
.creds-list{list-style:none;margin:16px 0 0;padding:16px 0 0;border-top:1px solid var(--hair);display:flex;flex-direction:column;gap:9px}
.creds-list li{font:700 12px/1.4 "Space Mono",monospace;letter-spacing:.03em;color:var(--cream-dim);text-transform:uppercase;display:flex;gap:10px}
.creds-list li::before{content:"⚡";color:var(--bolt);flex:none}
.mk{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-direction:column;gap:9px}
.mk li{font-size:14.5px;color:var(--cream-dim);display:flex;gap:9px}
.mk li::before{content:"▸";color:var(--bolt);flex:none}

/* ---------- footer ---------- */
.site-foot{position:relative;z-index:1;border-top:1px solid var(--hair);margin-top:40px;background:var(--ink-2)}
.foot-in{max-width:var(--maxw);margin:0 auto;padding:34px 20px 24px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
.foot-col{display:flex;flex-direction:column;gap:7px}
.foot-col strong{font:800 16px/1 "Bricolage Grotesque",sans-serif}
.foot-col p{font-size:13px;color:var(--cream-faint);margin:0}
.foot-col a{font-size:13.5px;color:var(--cream-dim)}
.foot-col a:hover{color:var(--bolt)}
.foot-h{font:700 10px/1 "Space Mono",monospace;letter-spacing:.16em;text-transform:uppercase;color:var(--cream-faint);margin-bottom:4px}
.wires{font:700 11px/1 "Space Mono",monospace;letter-spacing:.3em;color:var(--bolt);margin-top:6px}
.foot-legal{max-width:var(--maxw);margin:0 auto;padding:16px 20px 30px;border-top:1px solid var(--hair);
  display:flex;gap:16px;flex-wrap:wrap;font:400 11.5px/1.5 "Space Mono",monospace;color:var(--cream-faint)}
@media (max-width:620px){
  .foot-in{grid-template-columns:1fr;gap:28px;text-align:center}
  .foot-col{align-items:center}
  .wires{margin-top:8px}
}

@media (prefers-reduced-motion:no-preference){
  .rv{opacity:0;transform:translateY(14px);animation:rise .6s cubic-bezier(.2,.7,.2,1) both}
  @keyframes rise{to{opacity:1;transform:none}}
}