/* =====================================================================
   Josef Pajer — BLOG  (blog.josefpajer.cz)
   Sdílený design pro rozcestník i všechny články.
   ===================================================================== */
:root{
  --ink:#0d0d0f;
  --ink-2:#17171b;
  --paper:#f6f5f0;
  --paper-2:#ecebe2;
  --yellow:#fffc00;
  --gold:#f2b100;
  --muted:#63636d;
  --line:rgba(13,13,15,.12);
  --line-soft:rgba(13,13,15,.07);
  --white:#fff;
  --maxw:1120px;
  --readw:720px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Inter",system-ui,sans-serif;background:var(--paper);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:"Bricolage Grotesque",sans-serif;line-height:1.08;font-weight:700;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
.eyebrow::before{content:"";width:26px;height:3px;background:var(--yellow)}
.dark .eyebrow,.blog-hero .eyebrow{color:var(--yellow)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:60;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand img{height:38px;width:auto}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:.92rem;font-weight:500;color:rgba(255,255,255,.72);transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-cta{font-weight:700;font-size:.9rem;padding:11px 20px;border-radius:100px;background:var(--yellow);color:var(--ink)!important;transition:transform .2s var(--ease),background .2s}
.nav-cta:hover{background:#fff;transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:.3s}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:1rem;padding:15px 28px;border-radius:100px;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),box-shadow .25s,background .2s,border-color .2s}
.btn-primary{background:var(--yellow);color:var(--ink);box-shadow:0 10px 30px -12px rgba(255,252,0,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(255,252,0,.75)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.dark .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28)}
.dark .btn-ghost:hover{border-color:#fff}
.btn-arrow{transition:transform .2s var(--ease)}
.btn:hover .btn-arrow{transform:translateX(4px)}

/* ---------- blog hero (index) ---------- */
.blog-hero{background:var(--ink);color:#fff;padding:70px 0 60px;position:relative;overflow:hidden}
.blog-hero::before{content:"";position:absolute;inset:0;opacity:.7;background:radial-gradient(60% 80% at 88% 0%,rgba(255,252,0,.12),transparent 60%)}
.blog-hero .inner{position:relative;max-width:760px}
.blog-hero h1{font-size:clamp(2.4rem,5vw,3.8rem);margin:20px 0 16px}
.blog-hero h1 .hl{color:var(--yellow)}
.blog-hero p{color:rgba(255,255,255,.72);font-size:1.12rem;max-width:52ch}

/* ---------- featured ---------- */
.section{padding:64px 0}
.feat{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;background:var(--ink);color:#fff;border-radius:24px;overflow:hidden;position:relative;padding:44px;align-items:center}
.feat::before{content:"";position:absolute;inset:0;opacity:.65;background:radial-gradient(70% 120% at 100% 0%,rgba(255,252,0,.14),transparent 55%)}
.feat .fmeta{position:relative}
.feat .tag{display:inline-block;background:var(--yellow);color:var(--ink);font-weight:700;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;padding:5px 12px;border-radius:100px;margin-bottom:16px}
.feat h2{position:relative;font-size:clamp(1.7rem,3vw,2.5rem);margin-bottom:14px}
.feat h2 a:hover{color:var(--yellow)}
.feat p{position:relative;color:rgba(255,255,255,.75);margin-bottom:22px}
.feat .date{position:relative;font-size:.85rem;color:rgba(255,255,255,.55);display:block;margin-bottom:20px}
.feat .flink{position:relative;color:var(--yellow);font-weight:700;display:inline-flex;gap:8px;align-items:center}

/* ---------- grid of posts ---------- */
.grid-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.grid-head h2{font-size:clamp(1.6rem,2.6vw,2.1rem)}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post{background:var(--white);border:1px solid var(--line-soft);border-radius:18px;padding:26px 24px;display:flex;flex-direction:column;transition:transform .28s var(--ease),box-shadow .28s,border-color .28s;position:relative;overflow:hidden}
.post::after{content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:var(--yellow);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.post:hover{transform:translateY(-4px);box-shadow:0 24px 44px -28px rgba(13,13,15,.35);border-color:transparent}
.post:hover::after{transform:scaleX(1)}
.post .tag{align-self:flex-start;font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);background:var(--paper-2);padding:5px 11px;border-radius:100px;margin-bottom:14px}
.post h3{font-size:1.16rem;line-height:1.22;margin-bottom:10px}
.post h3 a:hover{color:var(--gold)}
.post p{font-size:.94rem;color:var(--muted);margin-bottom:18px;flex:1}
.post .date{font-size:.8rem;color:var(--muted)}
.post .rd{margin-top:14px;font-weight:700;font-size:.88rem;color:var(--ink);display:inline-flex;gap:7px;align-items:center}
.post .rd .btn-arrow{transition:transform .2s var(--ease)}
.post:hover .rd .btn-arrow{transform:translateX(4px)}

/* ---------- article page ---------- */
.article{padding:52px 0 20px}
.article .back{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-weight:600;font-size:.9rem;margin-bottom:26px}
.article .back:hover{color:var(--ink)}
.art-head{max-width:var(--readw);margin:0 auto 34px}
.art-head .tag{display:inline-block;background:var(--yellow);color:var(--ink);font-weight:700;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;padding:5px 12px;border-radius:100px;margin-bottom:18px}
.art-head h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:18px}
.art-meta{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.9rem}
.art-meta .av{width:34px;height:34px;border-radius:50%;background:var(--yellow);color:var(--ink);display:grid;place-items:center;font-family:"Bricolage Grotesque";font-weight:800;font-size:.9rem}
.art-hero{max-width:960px;margin:0 auto 40px;border-radius:22px;overflow:hidden;border:1px solid var(--line-soft)}

/* prose */
.prose{max-width:var(--readw);margin:0 auto;font-size:1.08rem}
.prose > *{margin-bottom:1.15em}
.prose h2{font-size:1.7rem;margin-top:1.8em;padding-top:.2em;position:relative}
.prose h2::before{content:"";position:absolute;left:0;top:-.05em;width:40px;height:4px;background:var(--yellow)}
.prose h2{padding-top:.6em}
.prose h3{font-size:1.28rem;margin-top:1.5em;color:#1c1c22}
.prose p{color:#26262c}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin-bottom:.5em}
.prose ul li::marker{color:var(--gold)}
.prose a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--yellow);text-decoration-thickness:2px;text-underline-offset:3px;font-weight:600}
.prose a:hover{background:var(--yellow)}
.prose strong{font-weight:700}
.prose blockquote{border-left:4px solid var(--yellow);padding:6px 0 6px 20px;color:#3a3a42;font-style:italic}

/* CTA box in article */
.cta-box{max-width:var(--readw);margin:52px auto 0;background:var(--yellow);border-radius:22px;padding:38px 34px;color:var(--ink)}
.cta-box h3{font-size:1.5rem;margin-bottom:10px}
.cta-box p{margin-bottom:20px;font-size:1.02rem}

/* prev/next + share */
.art-foot{max-width:var(--readw);margin:40px auto 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--line-soft)}
.share{display:flex;gap:10px;align-items:center;font-size:.88rem;color:var(--muted)}
.share a{width:38px;height:38px;border-radius:10px;background:var(--paper-2);display:grid;place-items:center;transition:.2s}
.share a:hover{background:var(--yellow)}
.share svg{width:17px;height:17px;stroke:var(--ink);fill:none}

/* ---------- footer ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.62);padding:52px 0 32px;margin-top:64px}
.footer-top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-top img{height:38px;margin-bottom:14px}
.footer-legal{font-size:.86rem;max-width:44ch;line-height:1.7}
.footer-legal a{color:rgba(255,255,255,.82);text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:.84rem}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .posts{grid-template-columns:1fr 1fr}
  .feat{grid-template-columns:1fr;padding:32px}
  .nav-links{position:fixed;inset:72px 0 auto 0;flex-direction:column;background:var(--ink);padding:20px 24px 30px;gap:18px;border-bottom:1px solid rgba(255,255,255,.12);transform:translateY(-130%);transition:transform .32s var(--ease);align-items:flex-start}
  .nav-links.open{transform:none}
  .nav-toggle{display:block}
}
@media(max-width:560px){
  .posts{grid-template-columns:1fr}
  .section{padding:48px 0}
}

/* related-articles */
.related{max-width:var(--readw);margin:56px auto 4px}
.related>h2{font-size:1.5rem;margin-bottom:20px}
.related .posts{margin-bottom:18px}
.related-home{font-size:.98rem;color:var(--muted)}
.related-home a{color:var(--ink);font-weight:600;text-decoration:underline}
@media(max-width:640px){.related .posts{grid-template-columns:1fr}}