/* SEO dla AI – blog styles (shares tokens with the landing page) */
:root{
  --bg:#070707;
  --surface:#101010;
  --surface-2:#161616;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text:#f4f4f1;
  --body:#d2d2cd;
  --muted:#a3a3a0;
  --dim:#7d7d7a;
  --accent:#9ff0c8;
  --accent-ink:#06261a;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --serif:"Instrument Serif","Times New Roman",Georgia,serif;
  --radius:20px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{width:min(1100px,100% - 160px);margin-inline:auto}
.narrow{width:min(720px,100% - 160px);margin-inline:auto}

/* Header */
.header{position:sticky;top:0;z-index:50;background:rgba(7,7,7,.8);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}
.header .wrap{height:72px;display:flex;align-items:center;gap:28px}
.logo{display:inline-flex;align-items:baseline;gap:6px;font-size:22px;line-height:1;white-space:nowrap}
.logo .s{font-weight:600;font-style:italic;letter-spacing:-.03em}
.logo .d{font-family:var(--serif);font-size:1.18em}
.nav{display:flex;gap:28px;margin-left:auto;font-size:15px;color:var(--muted)}
.nav a:hover,.nav a[aria-current]{color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:52px;padding:0 24px;border-radius:999px;font-weight:600;font-size:15.5px;white-space:nowrap;transition:background .25s,box-shadow .25s,transform .25s var(--ease),border-color .25s}
.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 30px -12px rgba(159,240,200,.45)}
.btn-primary:hover{background:#c4f8de;transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--text)}
.btn-sm{height:42px;padding:0 18px;font-size:14.5px}

/* Breadcrumbs */
.crumbs{font-size:13.5px;color:var(--dim);padding-top:40px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;color:#4a4a48}
.crumbs a:hover{color:var(--text)}

/* Blog index */
.blog-hero{padding:28px 0 40px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:#8a8a87}
.blog-hero h1,.article h1{font-family:var(--serif);font-weight:400;font-size:clamp(40px,5vw,64px);line-height:1.04;letter-spacing:-.015em;margin-top:16px;text-wrap:balance}
.blog-hero p{color:var(--muted);font-size:18px;max-width:620px;margin-top:18px}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-bottom:110px}
.post{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;display:flex;flex-direction:column;transition:border-color .3s,transform .3s var(--ease),background .3s}
.post:hover{border-color:var(--line-strong);transform:translateY(-3px);background:var(--surface-2)}
.post-tag{align-self:flex-start;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line-strong);border-radius:999px;padding:4px 10px}
.post h2{font-size:20px;font-weight:600;letter-spacing:-.01em;line-height:1.3;margin-top:18px}
.post p{color:var(--muted);font-size:15px;margin-top:10px;flex:1}
.post-meta{margin-top:20px;font-size:13px;color:var(--dim)}

/* Article */
.article{padding-bottom:40px}
.article header{padding:24px 0 8px}
.lede{font-size:20px;line-height:1.6;color:var(--muted);margin-top:22px}
.meta{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:22px;font-size:14px;color:var(--dim)}
.meta b{color:var(--muted);font-weight:500}
.tldr{margin-top:36px;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);padding:24px 26px}
.tldr strong.label{display:block;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:10px}
.tldr ul{padding-left:20px;display:grid;gap:6px;color:var(--body)}
.toc{margin-top:28px;font-size:15px}
.toc strong{display:block;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);font-weight:600;margin-bottom:10px}
.toc ol{padding-left:20px;display:grid;gap:6px;color:var(--muted)}
.toc a:hover{color:var(--text)}

.prose{margin-top:20px;font-size:18px;line-height:1.75;color:var(--body)}
.prose h2{font-family:var(--sans);font-size:28px;line-height:1.25;font-weight:600;letter-spacing:-.02em;color:var(--text);margin:56px 0 16px}
.prose h3{font-size:21px;line-height:1.35;font-weight:600;letter-spacing:-.01em;color:var(--text);margin:34px 0 10px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:24px;display:grid;gap:8px}
.prose li::marker{color:var(--dim)}
.prose strong{color:var(--text);font-weight:600}
.prose a{color:var(--text);border-bottom:1px solid var(--line-strong);transition:border-color .2s}
.prose a:hover{border-color:var(--text)}
.prose blockquote{border-left:2px solid var(--line-strong);padding:4px 0 4px 20px;color:var(--muted);margin:0 0 20px}
.prose code{font-size:.88em;background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:1px 6px;color:var(--text)}
.prose pre{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;overflow-x:auto;font-size:14.5px;line-height:1.6;margin:0 0 22px}
.prose pre code{background:none;border:0;padding:0}
.table-wrap{overflow-x:auto;margin:0 0 24px;border:1px solid var(--line);border-radius:14px}
.prose table{width:100%;border-collapse:collapse;font-size:15.5px;line-height:1.5}
.prose th,.prose td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{color:var(--text);font-weight:600;background:var(--surface)}
.prose tr:last-child td{border-bottom:0}
.note{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 20px;font-size:16px;color:var(--muted);margin:0 0 22px}

.cta-box{margin:48px 0 8px;background:#f4f4f1;color:#0b0b0b;border-radius:24px;padding:34px 34px 30px}
.cta-box h2{font-family:var(--serif);font-weight:400;font-size:clamp(30px,3.4vw,40px);line-height:1.08;margin:0 !important;color:#0b0b0b}
.cta-box p{color:#4a4a47;margin:12px 0 22px;font-size:17px}
.cta-box .btn-primary{background:#0f7a4f;color:#fff;box-shadow:none}
.cta-box .btn-primary:hover{background:#0b6640}

.faq-block details{border-bottom:1px solid var(--line)}
.faq-block details:first-of-type{border-top:1px solid var(--line)}
.faq-block summary{list-style:none;cursor:pointer;padding:20px 0;display:flex;justify-content:space-between;gap:20px;align-items:center}
.faq-block summary::-webkit-details-marker{display:none}
.faq-block summary h3{font-size:18px;margin:0;line-height:1.4}
.faq-block summary::after{content:"+";flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:18px;color:var(--muted)}
.faq-block details[open] summary::after{content:"−"}
.faq-block details p{color:var(--muted);font-size:16.5px;padding-bottom:18px}

.author{display:flex;gap:16px;align-items:center;margin-top:48px;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.author .av{width:48px;height:48px;border-radius:50%;background:var(--surface-2);border:1px solid var(--line-strong);display:grid;place-items:center;font-family:var(--serif);font-size:20px;flex:none}
.author b{display:block;font-weight:600}
.author span{font-size:14px;color:var(--dim)}

.related{padding:72px 0 110px}
.related h2{font-family:var(--serif);font-weight:400;font-size:36px;margin-bottom:24px}
.related .posts{grid-template-columns:repeat(2,1fr);padding-bottom:0}

/* Footer */
footer{border-top:1px solid var(--line);padding:40px 0 48px;color:var(--dim);font-size:14px}
footer .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
footer .logo{color:var(--text);font-size:20px}
footer nav{display:flex;gap:24px;flex-wrap:wrap}
footer a:hover{color:var(--text)}

@media (max-width:1024px){
  .wrap,.narrow{width:calc(100% - 96px)}
  .nav{display:none}
  .theme-toggle{margin-left:auto}
  .posts{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .wrap,.narrow{width:calc(100% - 56px)}
  .header .wrap{height:64px;gap:12px}
  .header .btn-sm{display:none}
  .posts,.related .posts{grid-template-columns:1fr}
  .prose{font-size:17px}
  .prose h2{font-size:24px;margin-top:44px}
  .lede{font-size:18px}
  .cta-box{padding:28px 22px}
}

/* Theme toggle + language switch */
.theme-toggle{width:38px;height:38px;border-radius:50%;border:1px solid var(--line-strong);background:transparent;color:var(--muted);display:grid;place-items:center;cursor:pointer;flex:none;transition:color .2s,border-color .2s}
.theme-toggle:hover{color:var(--text);border-color:var(--text)}
.theme-toggle .i-moon,[data-theme="light"] .theme-toggle .i-sun{display:none}
[data-theme="light"] .theme-toggle .i-moon{display:block}
.lang{font-size:14px;font-weight:500;color:var(--muted);padding:8px 6px}
.lang:hover{color:var(--text)}
.lang b{color:var(--text);font-weight:600}
.legal .prose h2{font-size:22px;margin-top:40px}
.todo{background:#fff3b0;color:#3a2f00;border-radius:4px;padding:0 4px;font-weight:600}
.legal-meta{color:var(--dim);font-size:14px;margin-top:14px}

/* Light theme */
:root[data-theme="light"]{
  color-scheme:light;
  --bg:#fafaf8;--surface:#ffffff;--surface-2:#f2f2ef;
  --line:rgba(0,0,0,.08);--line-strong:rgba(0,0,0,.16);
  --text:#121211;--body:#2e2e2b;--muted:#55554f;--dim:#73736c;
  --accent:#0f7a4f;--accent-ink:#ffffff;
}
[data-theme="light"] .header{background:rgba(250,250,248,.85)}
[data-theme="light"] .btn-primary{box-shadow:0 8px 24px -12px rgba(15,122,79,.55)}
[data-theme="light"] .btn-primary:hover{background:#0b6640}
[data-theme="light"] .crumbs li+li::before{color:#b0b0aa}
[data-theme="light"] .cta-box{background:#efefeb}
footer .company{flex-basis:100%;font-size:12.5px;line-height:1.6;color:var(--dim);margin-top:4px}
.author b a{color:var(--text)}
.author span a{color:var(--muted);border-bottom:1px solid var(--line-strong)}
.author span a:hover{color:var(--text)}
.meta a{color:var(--muted);border-bottom:1px solid var(--line-strong)}
.meta a:hover{color:var(--text)}
.author .av{font-family:var(--sans);font-size:15px;font-weight:600}