/* inveko 4U — sdílený design systém pro PHP stránky (blog, portfolio, admin)
   Stejné tokeny jako index.html. */
:root{
  --paper:#ECECE8;--paper-2:#F5F5F1;--ink:#17181A;--ink-soft:#3C3D40;
  --concrete:#8B8B85;--line:#D5D5CF;--line-strong:#C1C1BA;
  --accent:#2F4A63;--accent-bright:#3E6289;--maxw:1220px;--gutter:clamp(20px,5vw,64px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:'Outfit',system-ui,sans-serif;font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
.navlinks a,.foot-nav a{font-family:'Outfit',system-ui,sans-serif}
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;opacity:.28;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 78%);mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 78%)}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter);position:relative;z-index:1}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:#fff}
h1,h2,h3{font-family:'Outfit',sans-serif;font-weight:300;line-height:1;letter-spacing:-.01em}
.mono{font-family:'IBM Plex Mono',monospace}
.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:.72rem;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:.6em}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent)}

/* header / footer */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(10px);background:color-mix(in srgb,var(--paper) 90%,transparent);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{font-family:'Outfit',sans-serif;font-weight:600;font-size:1.05rem;letter-spacing:-.02em;display:flex;align-items:center;gap:.5em}
.brand .tick{width:9px;height:9px;border:1.5px solid var(--accent);border-radius:50%;position:relative}
.brand .tick::after{content:"";position:absolute;inset:-5px;border-left:1px solid var(--accent);left:50%}
.navlinks{display:flex;gap:1.6rem;align-items:center}
.navlinks a{font-size:.82rem;font-weight:500;color:var(--ink-soft);transition:color .2s}
.navlinks a:hover{color:var(--ink)}
.nav-cta{font-family:'IBM Plex Mono',monospace;font-size:.75rem;border:1px solid var(--ink);padding:.6em 1.1em;border-radius:2px;transition:.25s}
.nav-cta:hover{background:var(--ink);color:var(--paper)}
footer{border-top:1px solid var(--line);padding-block:clamp(40px,5vw,64px);margin-top:clamp(60px,8vw,110px);position:relative;z-index:1}
.foot-top{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;align-items:flex-start}
.foot-nav{display:flex;gap:1.5rem;flex-wrap:wrap}
.foot-nav a{font-size:.85rem;color:var(--ink-soft)}.foot-nav a:hover{color:var(--ink)}
.foot-bottom{margin-top:2.6rem;padding-top:1.6rem;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-family:'IBM Plex Mono',monospace;font-size:.72rem;color:var(--concrete)}

/* buttons */
.btn{font-family:'IBM Plex Mono',monospace;font-size:.82rem;letter-spacing:.03em;padding:1em 1.6em;border-radius:2px;display:inline-flex;align-items:center;gap:.7em;transition:.25s;cursor:pointer;border:1px solid var(--ink);background:transparent;color:var(--ink)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--accent);border-color:var(--accent)}
.btn:hover{ }

/* page intro */
.page-head{padding-top:clamp(48px,7vw,90px);padding-bottom:clamp(30px,4vw,50px)}
.page-head h1{font-size:clamp(2.4rem,6vw,4.4rem);margin:1.2rem 0 1rem}
.page-head p{color:var(--ink-soft);max-width:52ch;font-size:1.05rem}

/* card grid (blog + portfolio) */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.card{background:var(--paper);display:flex;flex-direction:column;transition:background .3s}
.card:hover{background:var(--paper-2)}
.card .thumb{aspect-ratio:3/2;background:var(--paper-2);overflow:hidden;border-bottom:1px solid var(--line)}
.card .thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.card:hover .thumb img{transform:scale(1.04)}
.card .thumb.empty{display:flex;align-items:center;justify-content:center;font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.16em;color:var(--line-strong)}
.card .body{padding:clamp(20px,2.4vw,30px);display:flex;flex-direction:column;gap:.7rem;flex:1}
.card .meta{font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.card h3{font-size:1.25rem}
.card p{color:var(--ink-soft);font-size:.94rem;flex:1}
.card .more{font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--ink);display:inline-flex;gap:.5em}
.card:hover .more{color:var(--accent)}

/* article / project detail */
.article{max-width:760px;margin-inline:auto;padding-top:clamp(40px,6vw,80px)}
.article .meta{font-family:'IBM Plex Mono',monospace;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:1.4rem;display:flex;gap:1.4rem;flex-wrap:wrap}
.article h1{font-size:clamp(2.1rem,5vw,3.4rem);margin-bottom:1.6rem}
.article .cover{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);margin-bottom:2.4rem}
.article .content{font-size:1.06rem;color:var(--ink-soft)}
.article .content h2{font-size:1.6rem;color:var(--ink);margin:2.2rem 0 1rem}
.article .content h3{font-size:1.25rem;color:var(--ink);margin:1.8rem 0 .8rem}
.article .content p{margin-bottom:1.2rem}
.article .content ul,.article .content ol{margin:0 0 1.2rem 1.4rem}
.article .content img{max-width:100%;height:auto;border:1px solid var(--line);margin:1.4rem 0}
.article .content a{color:var(--accent);text-decoration:underline}
.backlink{display:inline-flex;gap:.5em;font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--ink-soft);margin-top:3rem}
.backlink:hover{color:var(--accent)}

/* pagination + empty */
.pager{display:flex;justify-content:center;gap:.6rem;margin-top:3rem;font-family:'IBM Plex Mono',monospace;font-size:.82rem}
.pager a,.pager span{padding:.5em .9em;border:1px solid var(--line-strong);border-radius:2px;color:var(--ink-soft)}
.pager a:hover{border-color:var(--ink);color:var(--ink)}
.pager .cur{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.empty{border:1px dashed var(--line-strong);padding:2em;text-align:center;font-family:'IBM Plex Mono',monospace;font-size:.85rem;color:var(--concrete)}

@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}.navlinks{gap:1rem}.navlinks a{font-size:.78rem}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.navlinks{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}