/* HashCoreAI blog — shared styles (self-contained, matches the main site's dark theme) */
:root{
  --bg:#07080A; --bg-2:#0D0F13; --surface:#16191F; --surface-hi:#1C2028;
  --border:#232830; --border-hi:#2E3440; --text:#F2F4F7; --text-2:#C5CAD3;
  --muted:#8A93A1; --dim:#5A6371; --accent:#4FD1FF; --accent-2:#7B5CFF;
  --accent-soft:rgba(79,209,255,.10); --accent-glow:rgba(79,209,255,.35);
  --radius:12px; --radius-lg:20px;
  --f:"Geist",-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",sans-serif;
  --mono:"Geist Mono",ui-monospace,"SF Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:var(--f);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}

/* lang toggle */
[data-lang][hidden]{display:none}

/* header */
.bl-head{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px clamp(18px,5vw,40px);background:rgba(7,8,10,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.bl-brand{display:flex;align-items:center;gap:9px;color:var(--text);font-weight:700;letter-spacing:.2px}
.bl-brand img{width:24px;height:24px}
.bl-nav{display:flex;align-items:center;gap:18px}
.bl-nav a{color:var(--muted);font-size:14px;font-weight:500}
.bl-nav a:hover{color:var(--text);text-decoration:none}
.bl-langs{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.bl-langs button{background:transparent;border:0;color:var(--muted);font:600 12px/1 var(--f);padding:7px 10px;cursor:pointer}
.bl-langs button.on{background:var(--accent-soft);color:var(--accent)}
@media(max-width:620px){.bl-nav a:not(.bl-cta){display:none}}

/* index */
.bl-wrap{max-width:1080px;margin:0 auto;padding:clamp(36px,6vw,72px) clamp(18px,5vw,40px)}
.bl-hero h1{font-size:clamp(30px,5vw,46px);margin:0 0 10px;letter-spacing:-.02em}
.bl-hero p{color:var(--text-2);font-size:18px;max-width:640px;margin:0}
.bl-eyebrow{color:var(--accent);font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:10px}
.post-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
@media(max-width:900px){.post-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.post-list{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;gap:10px;padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);transition:transform .25s,border-color .25s,background .25s}
.post-card:hover{transform:translateY(-3px);border-color:var(--accent);background:var(--surface-hi);text-decoration:none}
.post-cat{align-self:flex-start;font-family:var(--mono);font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);border:1px solid var(--border);border-radius:999px;padding:4px 11px}
.post-card h2{margin:2px 0 0;font-size:20px;line-height:1.3;color:var(--text);letter-spacing:-.01em}
.post-card p{margin:0;color:var(--text-2);font-size:14.5px;line-height:1.6;flex:1}
.post-meta{color:var(--dim);font-size:12.5px;font-variant-numeric:tabular-nums}

/* article */
.article{max-width:760px;margin:0 auto;padding:clamp(28px,5vw,56px) clamp(18px,5vw,40px)}
.article .back{display:inline-block;color:var(--muted);font-size:14px;margin-bottom:22px}
.article-cat{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.article h1{font-size:clamp(28px,4.4vw,40px);line-height:1.18;letter-spacing:-.02em;margin:10px 0 12px}
.article-meta{color:var(--dim);font-size:14px;margin:0 0 32px;border-bottom:1px solid var(--border);padding-bottom:24px}
.article-body{font-size:17.5px;color:var(--text-2)}
.article-body h2{color:var(--text);font-size:25px;letter-spacing:-.01em;margin:38px 0 12px}
.article-body h3{color:var(--text);font-size:19px;margin:28px 0 8px}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin:0 0 8px}
.article-body strong{color:var(--text)}
.article-body a{color:var(--accent)}
.article-body blockquote{margin:22px 0;padding:14px 20px;border-left:3px solid var(--accent);background:var(--bg-2);border-radius:0 10px 10px 0;color:var(--text)}
.article-body code{font-family:var(--mono);font-size:.92em;color:var(--accent);background:var(--bg-2);padding:2px 6px;border-radius:6px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:top}
.article-body thead th{color:var(--text);border-bottom:2px solid var(--border-hi);font-size:13px;text-transform:uppercase;letter-spacing:.03em}
.article-body tbody tr:hover{background:var(--bg-2)}
.article-cta{margin-top:40px;padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg)}
.article-cta p{margin:0 0 14px;color:var(--text-2)}
.article-cta .btn{display:inline-block;padding:11px 20px;border-radius:10px;background:var(--accent);color:#04121a;font-weight:600}
.article-cta .btn:hover{text-decoration:none;box-shadow:0 0 24px -4px var(--accent-glow)}
.article-more{margin-top:44px;border-top:1px solid var(--border);padding-top:24px}
.article-more h3{font-size:15px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin:0 0 12px}
.article-more ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.article-more a{color:var(--text-2)}

/* footer */
.bl-foot{border-top:1px solid var(--border);padding:26px clamp(18px,5vw,40px);color:var(--dim);font-size:13px;display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.bl-foot a{color:var(--muted)}