/* Shared stylesheet for /blog/* pages. Design tokens mirror public/index.html
   so the blog feels like a natural extension of the homepage. Duplicated
   rather than imported because the homepage ships its CSS inline and this
   site has no build step to share a single source file. */
:root{
  --bg:#10141a;
  --surface:#171c24;
  --surface-2:#1e2530;
  --border:#2a323e;
  --fg:#edf0f2;
  --fg-dim:#8b93a3;
  --fg-faint:#59616e;
  --accent:#c9a237;
  --accent-fg:#10141a;
  --accent-soft:rgba(201,162,55,.13);
  --teal:#4fb0a5;
  --teal-soft:rgba(79,176,165,.14);
  --danger:#d1766a;
  --ok:#6fae7a;
  --ok-soft:rgba(111,174,122,.14);
  --radius:4px;
  --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --sans:'IBM Plex Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  --serif:'Fraunces',Georgia,serif;
  --maxw:1180px;
  --maxw-article:720px;
  color-scheme:dark;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg:#eef0f2; --surface:#ffffff; --surface-2:#e6e9ed; --border:#d6dade;
    --fg:#14171b; --fg-dim:#4c5560; --fg-faint:#7a8290;
    --accent:#8a6a1a; --accent-fg:#ffffff; --accent-soft:rgba(138,106,26,.1);
    --teal:#2f8a80; --teal-soft:rgba(47,138,128,.1);
    --danger:#a5453f; --ok:#3f7a4d; --ok-soft:rgba(63,122,77,.1);
    color-scheme:light;
  }
}
:root[data-theme="light"]{
  --bg:#eef0f2; --surface:#ffffff; --surface-2:#e6e9ed; --border:#d6dade;
  --fg:#14171b; --fg-dim:#4c5560; --fg-faint:#7a8290;
  --accent:#8a6a1a; --accent-fg:#ffffff; --accent-soft:rgba(138,106,26,.1);
  --teal:#2f8a80; --teal-soft:rgba(47,138,128,.1);
  --danger:#a5453f; --ok:#3f7a4d; --ok-soft:rgba(63,122,77,.1);
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  padding-inline:20px;
  -webkit-font-smoothing:antialiased;
}
main{max-width:var(--maxw);margin:0 auto}
img{max-width:100%}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.12;text-wrap:balance;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.container{max-width:var(--maxw);margin-inline:auto}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.skip-link{position:fixed;top:-100px;left:12px;z-index:200;background:var(--accent);color:var(--accent-fg);padding:.6em 1em;border-radius:var(--radius);font-family:var(--mono);font-size:.85rem;transition:top .15s}
.skip-link:focus{top:12px}

.grid-bg{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:.35;
  mask-image:linear-gradient(to bottom, black, black 30%, transparent 85%);
}

.eyebrow{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--accent);display:flex;align-items:center;gap:.6em;
}
.eyebrow::before{content:"";width:1.4em;height:1px;background:var(--accent)}
.path{font-family:var(--mono);font-size:.72rem;color:var(--fg-faint);letter-spacing:.02em}
.section-head{max-width:640px;margin-bottom:2.6rem;display:flex;flex-direction:column;gap:.6rem}
.section-head h2{font-size:clamp(1.7rem,3.6vw,2.5rem)}
.section-head .lede{color:var(--fg-dim);font-size:1.02rem;max-width:60ch}
section{padding-block:clamp(3.5rem,7vw,6rem);border-bottom:1px solid var(--border)}
section:last-of-type{border-bottom:none}

.reveal{opacity:1;transform:none;transition:opacity .5s ease, transform .5s ease}
@media (prefers-reduced-motion: no-preference){
  .reveal{opacity:0;transform:translateY(14px)}
  .reveal.is-visible{opacity:1;transform:none}
}

/* ---------- NAV (shared with homepage) ---------- */
.nav{
  position:sticky;top:env(safe-area-inset-top,0px);z-index:100;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding-block:.85rem;gap:1rem}
.logo{font-family:var(--mono);font-weight:600;font-size:.95rem;display:flex;align-items:center;gap:.4em;white-space:nowrap;text-decoration:none}
.logo .dot{color:var(--accent)}
.nav-links{display:flex;gap:1.6rem;font-family:var(--mono);font-size:.82rem}
.nav-links a{text-decoration:none;color:var(--fg-dim);position:relative;padding-block:.2em}
.nav-links a:hover,.nav-links a.active{color:var(--fg)}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--accent);transform:scaleX(0);transition:transform .2s}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:.6rem}
.icon-btn{
  width:34px;height:34px;display:grid;place-items:center;border-radius:var(--radius);
  background:transparent;border:1px solid var(--border);color:var(--fg-dim);cursor:pointer;
}
.icon-btn:hover{color:var(--fg);border-color:var(--fg-faint)}
.nav-toggle{display:none}
.icon{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6}
@media (max-width:760px){
  .nav-links{
    position:fixed;inset:57px 0 auto 0;flex-direction:column;padding:1.2rem 20px;gap:0;
    background:var(--surface);border-bottom:1px solid var(--border);
    transform:translateY(-8px);opacity:0;pointer-events:none;transition:transform .18s, opacity .18s;
  }
  .nav-links a{padding-block:.8rem;border-bottom:1px solid var(--border);font-size:.95rem}
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-toggle{display:grid}
}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;font-family:var(--mono);font-size:.85rem;font-weight:500;
  padding:.85em 1.4em;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .15s, border-color .15s, background .15s;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:var(--accent-fg)}
.btn-primary:hover{background:color-mix(in srgb, var(--accent) 88%, white)}
.btn-ghost{background:transparent;color:var(--fg);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--fg-faint)}

.tag{
  font-family:var(--mono);font-size:.78rem;color:var(--fg-dim);background:var(--surface);
  border:1px solid var(--border);border-radius:999px;padding:.32em .85em;
}

/* ---------- FOOTER (shared with homepage) ---------- */
footer{padding-block:2.4rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;font-family:var(--mono);font-size:.78rem;color:var(--fg-faint)}
footer .f-name{color:var(--fg-dim)}

/* ---------- BLOG: hero ---------- */
.blog-hero{padding-block:clamp(3rem,8vw,5rem) clamp(2.5rem,5vw,3.5rem)}
.blog-hero h1{font-size:clamp(2rem,4.6vw,3.1rem);margin-block:.9rem 1rem}
.blog-hero .sub{color:var(--fg-dim);font-size:1.05rem;max-width:58ch}

/* ---------- BLOG: cards / grid ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.2rem}
.post-card{
  display:flex;flex-direction:column;gap:.9rem;background:var(--surface);border:1px solid var(--border);
  border-radius:6px;padding:1.6rem;text-decoration:none;transition:border-color .2s, transform .2s;
}
.post-card:hover{border-color:var(--fg-faint);transform:translateY(-2px)}
.post-card.featured{grid-column:1 / -1;flex-direction:row;align-items:flex-start;gap:2rem;padding:2rem}
@media (max-width:700px){.post-card.featured{flex-direction:column}}
.post-cat{
  font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--accent);
  border:1px solid var(--border);border-radius:999px;padding:.3em .8em;width:fit-content;
}
.post-card h3,.post-card h2{font-family:var(--sans);font-weight:700;color:var(--fg);font-size:1.15rem}
.post-card.featured h2{font-size:clamp(1.4rem,2.6vw,1.8rem)}
.post-excerpt{color:var(--fg-dim);font-size:.94rem;flex:1}
.post-meta{font-family:var(--mono);font-size:.74rem;color:var(--fg-faint);display:flex;gap:.8em;align-items:center}
.post-read{font-family:var(--mono);font-size:.82rem;color:var(--fg);display:inline-flex;align-items:center;gap:.4em}

/* ---------- ARTICLE ---------- */
.article-head{padding-block:clamp(3rem,7vw,4.5rem) clamp(2rem,4vw,2.5rem)}
.breadcrumb{font-family:var(--mono);font-size:.76rem;color:var(--fg-faint);display:flex;gap:.5em;margin-bottom:1.6rem}
.breadcrumb a{text-decoration:none;color:var(--fg-faint)}
.breadcrumb a:hover{color:var(--accent)}
.article-head h1{font-size:clamp(1.9rem,4.4vw,2.9rem);margin-block:1rem}
.article-excerpt{color:var(--fg-dim);font-size:1.08rem;max-width:66ch}
.article-meta{margin-top:1.4rem;font-family:var(--mono);font-size:.78rem;color:var(--fg-faint);display:flex;gap:.9em;align-items:center}

.article-layout{display:grid;grid-template-columns:minmax(0,var(--maxw-article)) 240px;gap:3rem;align-items:start}
@media (max-width:980px){.article-layout{grid-template-columns:1fr}}

.article-body{max-width:var(--maxw-article);display:flex;flex-direction:column;gap:1.3rem}
.article-body p{color:var(--fg-dim);font-size:1.04rem;line-height:1.75}
.article-body h2{font-size:clamp(1.4rem,2.6vw,1.8rem);margin-top:1.2rem;scroll-margin-top:90px}
.article-body h3{font-size:1.2rem;margin-top:.6rem;scroll-margin-top:90px}
.article-body ul,.article-body ol{display:flex;flex-direction:column;gap:.6rem;padding-left:1.4rem;color:var(--fg-dim);font-size:1rem}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li::marker{color:var(--accent)}
.article-body table{width:100%;border-collapse:collapse;font-size:.92rem;margin-block:.4rem}
.article-body th,.article-body td{border:1px solid var(--border);padding:.7em .9em;text-align:left;vertical-align:top}
.article-body th{background:var(--surface);font-family:var(--mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.04em;color:var(--fg-dim)}
.article-body td{color:var(--fg-dim)}
.article-body .table-wrap{overflow-x:auto;border-radius:6px}
.article-body pre{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:1.1rem 1.2rem;overflow-x:auto;font-family:var(--mono);font-size:.85rem;color:var(--fg-dim)}
.callout{
  background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--accent);
  border-radius:var(--radius);padding:1.2rem 1.4rem;
}
.callout.warning{border-left-color:var(--danger)}
.callout p{color:var(--fg);font-size:.98rem}
.callout .callout-title{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--accent);display:block;margin-bottom:.5rem}
.callout.warning .callout-title{color:var(--danger)}

/* ---------- TOC ---------- */
.toc{position:sticky;top:90px;background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:1.3rem 1.4rem;display:flex;flex-direction:column;gap:.7rem}
.toc-title{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--fg-faint)}
.toc ul{display:flex;flex-direction:column;gap:.5rem;font-size:.86rem}
.toc a{text-decoration:none;color:var(--fg-dim)}
.toc a:hover{color:var(--accent)}
.toc-service{border-top:1px solid var(--border);padding-top:.9rem;margin-top:.3rem}
.toc-service a{color:var(--fg);font-weight:500}

/* ---------- ARTICLE CTA ---------- */
.article-cta{
  background:var(--surface);border:1px solid var(--border);border-radius:8px;
  padding:clamp(1.6rem,4vw,2.2rem);display:flex;flex-direction:column;gap:.9rem;margin-top:.6rem;
}
.article-cta h3{font-size:1.25rem}
.article-cta p{color:var(--fg-dim);font-size:.96rem}

/* ---------- AUTHOR ---------- */
.author-box{display:flex;align-items:center;gap:1rem;padding-top:1.8rem;margin-top:.6rem;border-top:1px solid var(--border)}
.author-avatar{width:44px;height:44px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-family:var(--mono);font-weight:600;font-size:.9rem;flex-shrink:0}
.author-name{font-weight:600;color:var(--fg);font-size:.95rem}
.author-role{color:var(--fg-faint);font-size:.84rem}

/* ---------- RELATED ---------- */
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}