/* Varkido Blog — public styles. Mobile-first, neutral editorial palette. */
:root{
  --ink:#1a1d23; --muted:#5b6472; --line:#e5e7eb; --bg:#ffffff; --soft:#f7f8fa;
  --accent:#0f6feb; --accent-ink:#0a4ea8; --maxw:1140px; --article-w:720px;
  --radius:10px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;color:var(--ink);font-weight:700}
h1{font-size:clamp(1.7rem,4vw,2.6rem);margin:.4em 0 .5em}
h2{font-size:1.5rem;margin-top:1.8em}
h3{font-size:1.2rem;margin-top:1.4em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:99}
.skip-link:focus{left:8px;top:8px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:10px 18px;border-radius:6px;font-weight:600}
.btn:hover{background:var(--accent-ink);text-decoration:none;color:#fff}

/* Header */
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:1.1rem}
.brand:hover{text-decoration:none}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:800}
.nav-toggle{display:none;background:none;border:1px solid var(--line);padding:8px 14px;border-radius:6px;cursor:pointer;font:inherit}
.primary-nav{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.primary-nav ul{display:flex;gap:18px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.primary-nav a{color:var(--ink);font-weight:500}
.nav-search{display:flex;gap:6px}
.nav-search input{padding:8px 10px;border:1px solid var(--line);border-radius:6px;font:inherit;width:180px}
.nav-search button{padding:8px 12px;border:none;background:var(--ink);color:#fff;border-radius:6px;cursor:pointer}

/* Hero / archive */
.hero{padding:48px 0 24px;max-width:var(--article-w)}
.lede{color:var(--muted);font-size:1.15rem;margin:0}
.archive-header{padding:32px 0 8px}
.archive-count{color:var(--muted)}

/* Card grid */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;padding:24px 0}
.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;display:flex;flex-direction:column}
.card-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-title{margin:0;font-size:1.15rem}
.card-title a{color:var(--ink)}
.card-excerpt{color:var(--muted);margin:0;font-size:.95rem;flex:1}
.card-meta{color:var(--muted);font-size:.85rem;margin:0}
.card-cat{display:inline-block;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);font-weight:700}
.empty{padding:40px 0;color:var(--muted)}

/* Article */
.article{max-width:var(--article-w);margin:0 auto;padding:24px 0 40px}
.article-header h1{margin-bottom:.3em}
.article-excerpt{color:var(--muted);font-size:1.1rem}
.article-meta{color:var(--muted);font-size:.9rem}
.article-featured{margin:24px 0;border-radius:var(--radius);overflow:hidden}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:24px 0}
.toc-title{font-weight:700;margin:0 0 8px}
.toc ol{margin:0;padding-left:20px}
.toc-l3{margin-left:16px;list-style:circle}
.article-content{font-size:1.05rem}
.article-content p{margin:1em 0}
.article-content h2,.article-content h3{scroll-margin-top:80px}
.article-content pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:8px;overflow-x:auto;font-size:.9rem}
.article-content code{background:var(--soft);padding:2px 6px;border-radius:4px;font-size:.9em}
.article-content pre code{background:none;padding:0;color:inherit}
.article-content blockquote{border-left:4px solid var(--accent);margin:1.2em 0;padding:4px 16px;color:var(--muted);background:var(--soft)}
.article-content table{border-collapse:collapse;width:100%;margin:1em 0}
.article-content th,.article-content td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.article-content img{border-radius:8px;margin:1em 0}
.related{max-width:var(--article-w);margin:0 auto 40px}

/* Breadcrumbs */
.breadcrumbs{padding:20px 0 0;font-size:.9rem;color:var(--muted)}
.breadcrumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumbs li+li::before{content:"/";margin-right:6px;color:var(--line)}

/* Pagination */
.pagination ul{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:24px 0 40px}
.pagination a,.pagination .current{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:6px;color:var(--ink)}
.pagination .current{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Search */
.search-form{display:flex;gap:8px;max-width:520px}
.search-form input{flex:1;padding:10px 12px;border:1px solid var(--line);border-radius:6px;font:inherit}
.search-form button{padding:10px 18px;border:none;background:var(--accent);color:#fff;border-radius:6px;cursor:pointer}
.search-list{list-style:none;padding:0;margin:24px 0}
.search-list li{padding:16px 0;border-bottom:1px solid var(--line)}
.search-list h2{margin:0 0 6px;font-size:1.15rem}
.search-list p{margin:0;color:var(--muted)}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:48px;padding:28px 0;color:var(--muted);font-size:.9rem}
.footer-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;gap:16px}

@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:960px){.card-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){
  .nav-toggle{display:block}
  .primary-nav{display:none;width:100%;flex-direction:column;align-items:stretch;padding-bottom:16px}
  .primary-nav.open{display:flex}
  .primary-nav ul{flex-direction:column;gap:10px}
  .nav-search input{flex:1;width:auto}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}