/* ═══════════════════════════════════════════════════════════
   Nexion IT — styl wpisów blogowych (wspólny dla podstron)
   ═══════════════════════════════════════════════════════════ */
*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --bg:#0a1017;--bg-2:#0c1521;--surface:#0f1c2b;--surface-2:#122336;
  --border:#213a52;--border-soft:#1a2c40;
  --accent:#2b9cb0;--accent-2:#37b0c6;--glow:#0ea5c0;
  --ok:#3ec98a;--warn:#e5b567;--bad:#e07a6a;
  --text:#e7eef5;--text-2:#a2b4c6;--text-muted:#647889;
  --mono:'JetBrains Mono',ui-monospace,monospace;--sans:'Exo 2',sans-serif;
  --maxw:760px;
}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;font-weight:300;line-height:1.8;-webkit-font-smoothing:antialiased;min-height:100vh;
  background-image:radial-gradient(ellipse 60% 40% at 82% 0%,rgba(14,165,192,.08),transparent 60%);background-attachment:fixed;}
::selection{background:rgba(14,165,192,.28);color:#fff;}
a{color:var(--accent-2);}

/* progress */
#progress-bar{position:fixed;top:0;left:0;height:2px;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent-2),var(--glow));z-index:200;transition:width .1s linear;box-shadow:0 0 10px rgba(14,165,192,.5);}

/* logo */
.logo-mark{width:28px;height:32px;flex-shrink:0;overflow:visible;}
.logo-mark .hex{fill:rgba(14,165,192,.08);stroke:var(--accent);stroke-width:1.3;stroke-opacity:.5;}
.logo-mark .n{stroke:var(--accent-2);stroke-width:4.6;stroke-linecap:round;}
.logo-mark .node{fill:var(--accent-2);}
.logo-mark .core{fill:#dff2f7;fill-opacity:.5;}

/* nav */
nav{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;
  padding:0 1.5rem;height:64px;background:rgba(10,16,23,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--border-soft);}
.nav-logo{display:flex;align-items:center;gap:.65rem;text-decoration:none;}
.nav-logo .wm{font-weight:300;font-size:1.2rem;letter-spacing:.06em;color:var(--text);}
.nav-logo .wm b{font-weight:600;color:#fff;}
.nav-right{display:flex;align-items:center;gap:1.25rem;}
.nav-back{font-size:.85rem;color:var(--text-2);text-decoration:none;transition:color .2s;white-space:nowrap;}
.nav-back:hover{color:var(--accent-2);}
.lang-toggle{display:flex;align-items:center;border:1px solid var(--border);border-radius:5px;overflow:hidden;}
.lang-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;padding:.32rem .55rem;transition:background .2s,color .2s;}
.lang-btn:not(.active):hover{color:var(--text);}
.lang-btn.active{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#04121a;}
.lang-divider{width:1px;height:14px;background:var(--border);}

/* header / banner */
.article-head{max-width:var(--maxw);margin:0 auto;padding:3.2rem 1.5rem 1.5rem;}
.crumb{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:var(--text-muted);margin-bottom:1.4rem;}
.crumb a{color:var(--text-muted);text-decoration:none;transition:color .2s;}
.crumb a:hover{color:var(--accent-2);}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:.9rem;margin-bottom:1.1rem;font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);}
.cat-chip{color:var(--accent-2);border:1px solid rgba(55,176,198,.3);border-radius:100px;padding:.28rem .7rem;background:rgba(14,165,192,.05);}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--text-muted);}
h1.title{font-size:clamp(1.8rem,4.2vw,2.7rem);font-weight:200;line-height:1.18;letter-spacing:-.015em;color:#fff;margin-bottom:1rem;}
h1.title strong{font-weight:600;}
.article-lead{font-size:1.08rem;color:var(--text-2);line-height:1.75;}
.banner{max-width:var(--maxw);margin:1.6rem auto 0;padding:0 1.5rem;}
.banner-inner{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--border-soft);aspect-ratio:21/9;}
.banner-inner img{width:100%;height:100%;object-fit:cover;filter:brightness(.62) saturate(.6);display:block;}
.banner-inner::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(10,16,23,.75));}

/* body */
.article-body{max-width:var(--maxw);margin:0 auto;padding:2.6rem 1.5rem 2rem;}
.lang-block{display:none;}
.lang-block.active{display:block;animation:fade .35s ease;}
@keyframes fade{from{opacity:0;}to{opacity:1;}}
.article-body h2{font-size:1.4rem;font-weight:500;color:#fff;line-height:1.3;margin:2.6rem 0 1rem;padding-top:1.4rem;border-top:1px solid var(--border-soft);}
.article-body h2:first-child{border-top:none;padding-top:0;margin-top:0;}
.article-body h3{font-size:1.08rem;font-weight:600;color:var(--text);margin:1.8rem 0 .6rem;}
.article-body p{color:var(--text-2);margin-bottom:1.15rem;font-size:1rem;line-height:1.85;}
.article-body strong{color:var(--text);font-weight:600;}
.article-body a.inl{text-decoration:underline;text-underline-offset:2px;}
.article-body ul,.article-body ol{margin:0 0 1.25rem;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:.65rem;}
.article-body ul li{display:flex;gap:.75rem;color:var(--text-2);font-size:1rem;line-height:1.7;}
.article-body ul li::before{content:'→';color:var(--accent-2);font-family:var(--mono);flex-shrink:0;}
.article-body ol{counter-reset:step;}
.article-body ol li{display:flex;gap:.8rem;color:var(--text-2);font-size:1rem;line-height:1.7;counter-increment:step;}
.article-body ol li::before{content:counter(step);font-family:var(--mono);font-size:.8rem;color:var(--accent-2);border:1px solid rgba(55,176,198,.3);border-radius:5px;min-width:24px;height:24px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:.1rem;}

/* TL;DR */
.tldr{background:var(--surface);border:1px solid var(--border-soft);border-left:2px solid var(--accent);border-radius:10px;padding:1.4rem 1.6rem;margin-bottom:2.2rem;}
.tldr .t-l{font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin-bottom:.7rem;}
.tldr ul{margin:0;}
.tldr p{margin:0;font-size:.95rem;}

/* callouts */
.callout{border:1px solid var(--border-soft);border-radius:10px;padding:1.2rem 1.4rem;margin:1.6rem 0;background:var(--surface);display:flex;gap:.9rem;}
.callout .ic{flex-shrink:0;width:26px;height:26px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:.85rem;font-weight:600;}
.callout p{margin:0;font-size:.94rem;color:var(--text-2);}
.callout.tip{border-color:rgba(62,201,138,.3);}
.callout.tip .ic{background:rgba(62,201,138,.14);color:var(--ok);border:1px solid rgba(62,201,138,.3);}
.callout.warn{border-color:rgba(229,181,103,.32);}
.callout.warn .ic{background:rgba(229,181,103,.14);color:var(--warn);border:1px solid rgba(229,181,103,.3);}

blockquote{border-left:2px solid var(--accent);padding:.4rem 0 .4rem 1.3rem;margin:1.6rem 0;font-style:italic;color:var(--text);font-size:1.06rem;line-height:1.6;}

/* CTA */
.cta-article{max-width:var(--maxw);margin:1rem auto 0;padding:0 1.5rem;}
.cta-inner{position:relative;background:linear-gradient(160deg,var(--surface-2),var(--surface));border:1px solid rgba(55,176,198,.32);border-radius:14px;padding:2rem;overflow:hidden;}
.cta-inner::before{content:'';position:absolute;inset:0;border-radius:14px;padding:1px;background:linear-gradient(140deg,rgba(55,176,198,.5),transparent 55%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;}
.cta-inner h3{font-size:1.2rem;font-weight:500;color:#fff;margin-bottom:.5rem;}
.cta-inner p{font-size:.94rem;color:var(--text-2);line-height:1.65;margin-bottom:1.3rem;}
.cta-actions{display:flex;flex-wrap:wrap;gap:.8rem;}
.btn-primary{display:inline-flex;align-items:center;gap:.5rem;background:linear-gradient(135deg,#2ea9c0,#4ccfe2);color:#04121a;text-decoration:none;padding:.8rem 1.7rem;border-radius:6px;font-size:.92rem;font-weight:700;transition:filter .2s,transform .2s,box-shadow .25s;box-shadow:0 4px 16px rgba(14,165,192,.24);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 10px 26px rgba(14,165,192,.36);}
.btn-outline{display:inline-flex;align-items:center;gap:.5rem;border:1px solid var(--border);color:var(--text-2);text-decoration:none;padding:.8rem 1.7rem;border-radius:6px;font-size:.92rem;transition:border-color .2s,color .2s,background .2s;}
.btn-outline:hover{border-color:var(--accent);color:#fff;background:rgba(14,165,192,.06);}

/* related / footer nav */
.article-foot{max-width:var(--maxw);margin:2.4rem auto 0;padding:1.6rem 1.5rem 0;border-top:1px solid var(--border-soft);}
.back-link{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--mono);font-size:.78rem;letter-spacing:.04em;color:var(--accent-2);text-decoration:none;transition:gap .2s;}
.back-link:hover{gap:.75rem;}
.disclaimer{font-size:.78rem;color:var(--text-muted);line-height:1.6;margin-top:1.4rem;}

footer{border-top:1px solid var(--border-soft);padding:2.2rem 1.5rem;text-align:center;background:var(--bg-2);margin-top:3rem;}
footer .fl{display:inline-flex;align-items:center;gap:.5rem;margin-bottom:.5rem;}
footer .fl .wm{font-size:1rem;font-weight:300;color:var(--text);letter-spacing:.05em;}
footer .fl .wm b{font-weight:600;color:#fff;}
footer .ft{font-family:var(--mono);font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:var(--text-muted);margin-bottom:.6rem;}
footer .fc{font-size:.75rem;color:var(--text-muted);}

@media(max-width:600px){
  .article-head{padding-top:2.2rem;}
  .banner-inner{aspect-ratio:16/10;}
  .cta-inner{padding:1.5rem;}
}
@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;}}