/* ============================================================
   Hlib Storchak — Resources / blog styles
   Monochrome, matches the main site. Shared by the hub + posts.
   ============================================================ */
@import url('https://api.fontshare.com/v2/css?f[]=clash-display@600,500&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@500;600&display=swap');

:root{
  --bg:#000000; --bg2:#070709; --surface:#111318; --surface2:#161920;
  --line:#232733; --line2:#2f3542;
  --ink:#f4f6fa; --soft:#c3c9d6; --muted:#8b93a4; --faint:#5c6476;
  --accent:#ffffff;
  --maxw:1140px; --readw:720px; --radius:16px;
  --display:'Clash Display','Inter',system-ui,sans-serif;
  --sans:'Inter',system-ui,Arial,sans-serif;
  --mono:'JetBrains Mono','Courier New',monospace;
  --shadow-md:0 10px 40px -14px rgba(0,0,0,.7);
  --shadow-lg:0 30px 80px -24px rgba(0,0,0,.85);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;position:relative;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-0.02em;line-height:1.1}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* grid background — matches main site */
.dots{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:radial-gradient(ellipse 85% 85% at 50% 40%,black 25%,transparent 78%);
  mask-image:radial-gradient(ellipse 85% 85% at 50% 40%,black 25%,transparent 78%)}
main,header,footer{position:relative;z-index:1}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:var(--sans);font-weight:600;font-size:15px;padding:13px 22px;border-radius:11px;cursor:pointer;border:1.5px solid transparent;transition:transform .15s,box-shadow .15s,background .15s,border-color .15s}
.btn-primary{background:#fff;color:#000000;box-shadow:0 8px 30px -12px rgba(255,255,255,.4)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line2)}
.btn-ghost:hover{border-color:#fff;color:#fff}

/* header */
.bhead{position:sticky;top:0;z-index:50;background:rgba(10,11,15,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.bnav{display:flex;align-items:center;justify-content:space-between;height:68px}
.blogo{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:600;font-size:20px;letter-spacing:-0.4px;color:var(--ink)}
.bnav-links{display:none;gap:26px;align-items:center}
.bnav-links a{font-size:15px;color:var(--muted);transition:color .15s}
.bnav-links a:hover,.bnav-links a.active{color:var(--ink)}
@media(min-width:820px){.bnav-links{display:flex}}

/* ===== HUB ===== */
.hub-hero{padding:64px 0 36px;text-align:center;max-width:680px;margin:0 auto}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--ink);line-height:1.6}
.eyebrow::before{content:"";width:8px;height:8px;background:#fff}
.hub-hero h1{font-size:clamp(34px,5vw,52px);margin:16px 0 14px}
.hub-hero p{font-size:18px;color:var(--muted)}
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;padding:24px 0 80px}

/* card shell */
.pcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:0;overflow:hidden;transition:transform .2s,border-color .2s}
.pcard:hover{transform:translateY(-4px);border-color:var(--line2)}

/* cover gradient banner — shared by listing cards and article hero */
.pcover,.post-cover{position:relative;overflow:hidden;flex-shrink:0}
.pcover{height:148px}
.post-cover{height:200px;margin-bottom:-28px}
.pcover::before,.post-cover::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);background-size:20px 20px;z-index:0}
.pcover::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,var(--surface) 0%,transparent 55%);z-index:1}
.post-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,var(--bg) 0%,transparent 60%);z-index:1}
.pcover[data-cat="comparison"],.post-cover[data-cat="comparison"]{background:radial-gradient(ellipse at 30% 40%,rgba(100,130,255,.38) 0%,transparent 58%),radial-gradient(ellipse at 72% 68%,rgba(60,90,220,.16) 0%,transparent 48%),linear-gradient(150deg,#0d1220 0%,#090a0e 100%)}
.pcover[data-cat="playbook"],.post-cover[data-cat="playbook"]{background:radial-gradient(ellipse at 68% 36%,rgba(255,190,70,.34) 0%,transparent 54%),radial-gradient(ellipse at 28% 68%,rgba(255,140,30,.14) 0%,transparent 46%),linear-gradient(150deg,#131008 0%,#090a0e 100%)}

/* category badge pinned inside cover */
.ptag{position:absolute;bottom:12px;left:16px;z-index:2;display:inline-flex;align-items:center;font-family:var(--mono);font-size:9.5px;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);background:rgba(10,11,15,.8);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:6px;padding:4px 10px}

/* card body */
.pcontent{display:flex;flex-direction:column;flex:1;padding:20px 28px 24px}
.pmeta-top{display:block;font-family:var(--mono);font-size:11px;color:var(--faint);margin-bottom:9px}
.pcard h2{font-size:19px;line-height:1.25;margin-bottom:9px}
.pcard p{font-size:14.5px;color:var(--muted);flex:1;margin-bottom:16px}

/* card footer: author + read link */
.pfoot{display:flex;align-items:center;justify-content:space-between;gap:8px}
.pauthor{display:flex;align-items:center;gap:8px}
.pav{width:24px;height:24px;border-radius:50%;object-fit:cover;border:1px solid var(--line2);flex-shrink:0}
.pauthor-name{font-size:12px;color:var(--soft);font-family:var(--mono)}
.pmore{font-size:12px;color:var(--ink);font-weight:600;font-family:var(--mono);white-space:nowrap}
.pcard:hover .pmore{text-decoration:underline}

/* ===== TABLE OF CONTENTS ===== */
.toc-wrap{max-width:var(--readw);margin:0 auto;padding:0 24px 28px}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 22px}
.toc-label{font-family:var(--mono);font-size:10px;letter-spacing:1.2px;text-transform:uppercase;color:var(--faint);display:block;margin-bottom:12px}
.toc ol{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc ol li{counter-increment:toc;padding-left:0}
.toc ol li::before{display:none}
.toc a{display:flex;align-items:baseline;gap:10px;font-size:14px;color:var(--soft);padding:4px 0;text-decoration:none;transition:color .15s}
.toc a:hover{color:var(--ink)}
.toc a::before{content:counter(toc, decimal-leading-zero);font-family:var(--mono);font-size:10px;color:var(--faint);flex-shrink:0}

/* ===== KEY TAKEAWAYS ===== */
.key-takeaways{background:var(--surface);border:1px solid var(--line2);border-top:3px solid var(--ink);border-radius:12px;padding:22px 24px;margin:40px 0 10px}
.key-takeaways h3{font-family:var(--mono);font-size:10px;letter-spacing:1.2px;text-transform:uppercase;color:var(--ink);margin:0 0 14px}
.key-takeaways ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.key-takeaways ul li{position:relative;padding-left:20px;font-size:15.5px;color:var(--soft)}
.key-takeaways ul li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--ink)}

/* ===== POST ===== */
.post-hero{padding:56px 0 8px}
.post-hero .wrap{max-width:var(--readw)}
.back{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--muted);font-family:var(--mono);margin-bottom:22px;transition:color .15s}
.back:hover{color:var(--ink)}
.post-tag{font-family:var(--mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--faint)}
.blog-post h1{font-size:clamp(30px,4.4vw,46px);line-height:1.08;margin:14px 0 16px}
.byline{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);font-family:var(--mono);margin-bottom:8px}
.byline .av{width:30px;height:30px;border-radius:50%;object-fit:cover;border:1px solid var(--line2)}

.blog-post{max-width:var(--readw);margin:0 auto;padding:28px 24px 40px}
.blog-post h2{font-size:clamp(23px,3vw,30px);margin:42px 0 14px;line-height:1.2}
.blog-post h3{font-size:19px;margin:28px 0 10px;color:var(--ink)}
.blog-post p{font-size:16.5px;color:var(--soft);margin:0 0 18px}
.blog-post a:not(.btn){color:#fff;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line2)}
.blog-post a:not(.btn):hover{text-decoration-color:#fff}
.blog-post strong{color:var(--ink);font-weight:600}
.blog-post ul,.blog-post ol{margin:0 0 20px;padding-left:4px;list-style:none;display:flex;flex-direction:column;gap:10px}
.blog-post ul li,.blog-post ol li{position:relative;padding-left:26px;font-size:16px;color:var(--soft)}
.blog-post ul li::before{content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--ink)}
.blog-post ol{counter-reset:li}
.blog-post ol li{counter-increment:li}
.blog-post ol li::before{content:counter(li);position:absolute;left:0;top:0;font-family:var(--mono);font-size:12px;color:var(--faint);font-weight:600}

/* TL;DR / quick answer */
.tldr{background:var(--surface);border:1px solid var(--line2);border-left:3px solid #fff;border-radius:12px;padding:20px 22px;margin:8px 0 30px}
.tldr h3{margin:0 0 8px;font-size:13px;font-family:var(--mono);letter-spacing:1px;text-transform:uppercase;color:var(--ink)}
.tldr p{margin:0;font-size:16px;color:var(--soft)}

/* callout */
.callout{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:24px 0}
.callout p{margin:0;font-size:15.5px;color:var(--soft)}
.callout b{color:var(--ink)}

/* blockquote */
.blog-post blockquote{margin:24px 0;padding:6px 0 6px 22px;border-left:2px solid var(--line2);font-family:var(--display);font-weight:500;font-size:21px;line-height:1.4;color:var(--ink);letter-spacing:-.01em}

/* tables */
.blog-post .tbl{overflow-x:auto;margin:26px 0;border:1px solid var(--line);border-radius:14px}
.blog-post table{width:100%;border-collapse:collapse;min-width:520px;font-size:14.5px}
.blog-post thead th{text-align:left;font-family:var(--mono);font-size:10.5px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);font-weight:600;padding:14px 16px;background:rgba(255,255,255,.025);border-bottom:1px solid var(--line2)}
.blog-post tbody td{padding:13px 16px;color:var(--soft);border-bottom:1px solid var(--line);vertical-align:top}
.blog-post tbody tr:last-child td{border-bottom:none}
.blog-post tbody td:first-child{color:var(--ink);font-weight:500}

/* FAQ */
.faq-block{margin:40px 0 8px}
.faq-block details{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:10px;overflow:hidden}
.faq-block summary{cursor:pointer;list-style:none;padding:16px 20px;font-family:var(--display);font-weight:600;font-size:16px;color:var(--soft);display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-block summary::-webkit-details-marker{display:none}
.faq-block summary::after{content:"+";font-family:var(--mono);font-size:18px;color:var(--muted);transition:transform .2s}
.faq-block details[open] summary{color:var(--ink)}
.faq-block details[open] summary::after{transform:rotate(45deg)}
.faq-block details p{padding:0 20px 18px;font-size:15.5px;color:var(--muted);margin:0}

/* end CTA */
.post-cta{max-width:var(--readw);margin:48px auto 0;padding:0 24px}
.post-cta-inner{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--line2);border-radius:18px;padding:34px 30px;text-align:center}
.post-cta-inner::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent)}
.post-cta-inner h3{font-size:24px;margin-bottom:8px}
.post-cta-inner p{font-size:15.5px;color:var(--muted);margin-bottom:20px}

/* footer */
.bfoot{border-top:1px solid var(--line);margin-top:70px}
.bfoot .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;padding:32px 24px}
.bfoot .fbrand{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:600;font-size:17px}
.bfoot nav{display:flex;gap:20px;flex-wrap:wrap}
.bfoot nav a{font-size:14px;color:var(--muted);transition:color .15s}
.bfoot nav a:hover{color:var(--ink)}
.bfoot .fcopy{font-size:12.5px;color:var(--faint);width:100%}

.mark{flex:none}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}

/* ===== STICKY SIDEBAR TOC (article pages, desktop only) ===== */
@media(min-width:900px){
  .post-layout{
    display:grid;
    grid-template-columns:210px minmax(0,var(--readw));
    column-gap:56px;
    max-width:calc(210px + 56px + var(--readw) + 48px);
    margin:0 auto;
    padding:0 24px;
    align-items:start;
  }
  .post-layout .toc-wrap{
    grid-column:1;
    grid-row:1/span 10;
    position:sticky;
    top:88px;
    align-self:start;
    max-height:calc(100vh - 110px);
    overflow-y:auto;
    max-width:none;
    margin:0;
    padding:0;
  }
  .post-layout .toc{
    background:none;
    border:none;
    border-radius:0;
    padding:0;
  }
  .post-layout .toc-label{
    font-size:9px;
    letter-spacing:1.8px;
    color:var(--faint);
    margin-bottom:16px;
  }
  .post-layout .toc a{
    font-size:13px;
    color:var(--muted);
    padding:3px 0;
    line-height:1.5;
  }
  .post-layout .toc a:hover,.post-layout .toc a.toc-active{color:var(--ink)}
  .post-layout .toc a.toc-active::before{color:var(--soft)}
  .post-layout .blog-post{
    grid-column:2;
    max-width:none;
    margin:0;
    padding:24px 0 40px;
  }
  .post-layout .post-cta{
    grid-column:2;
    max-width:none;
    margin:48px 0 0;
    padding:0;
  }
}

/* ── Theme toggle ──────────────────────────────────────────── */
.theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:none;border:1px solid var(--line2);border-radius:8px;cursor:pointer;color:var(--muted);transition:color .15s,border-color .15s;flex-shrink:0}
.theme-toggle:hover{color:var(--ink);border-color:var(--muted)}
.theme-toggle .icon-sun{display:none}
.theme-toggle .icon-moon{display:block}

/* ── Light mode ────────────────────────────────────────────── */
html.light{
  --bg:#f5f6fa;--bg2:#eef0f6;--surface:#ffffff;--surface2:#f0f2f8;
  --line:#d5d9e8;--line2:#b8bdd2;
  --ink:#0d0f18;--soft:#2d3449;--muted:#5c6476;--faint:#8b93a4;
  color-scheme:light;
}
html.light body::before,html.light .dots{
  background-image:linear-gradient(to right,rgba(0,0,0,.055) 1px,transparent 1px),linear-gradient(to bottom,rgba(0,0,0,.055) 1px,transparent 1px);
  background-size:40px 40px;
}
html.light .theme-toggle .icon-sun{display:block}
html.light .theme-toggle .icon-moon{display:none}
html.light .pcover::after{background:linear-gradient(to top,var(--surface) 0%,transparent 55%)}