/* ════════════════════════════════════════════════════
   AeroBlast Blog — shared stylesheet
   Loaded by /blog/index.html and every post page.
   Design tokens mirror the homepage so the blog feels
   like a natural extension of the site.
   ════════════════════════════════════════════════════ */

:root{
  --ink:        #0E1218;
  --ink-soft:   #2A3340;
  --ink-mute:   #5A6573;
  --paper:      #F4F2EC;
  --paper-deep: #E8E5DC;
  --white:      #FFFFFF;
  --blue:       #0F4C8F;
  --blue-dark:  #0A3461;
  --blue-soft:  #DCE6F2;
  --orange:     #FF5A1F;
  --rule:       rgba(14,18,24,.12);
  --rule-strong: rgba(14,18,24,.85);

  --display: "Anton", "Impact", sans-serif;
  --sans:    "Manrope", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  --container: 1280px;
  --reading: 720px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--sans);
  font-weight:400;
  font-size:17px;
  line-height:1.55;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }

/* Grain overlay */
body::before{
  content:"";
  position:fixed; inset:0;
  pointer-events:none;
  z-index:1;
  opacity:.035;
  mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ──────────────────────────────────────────────
   Layout primitives
   ────────────────────────────────────────────── */
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
}
.eyebrow{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--blue);
  font-weight:500;
  display:inline-flex; align-items:center; gap:10px;
}
.eyebrow::before{
  content:""; width:28px; height:1px; background:var(--blue);
}
.display{
  font-family:var(--display);
  font-weight:400;
  line-height:.92;
  letter-spacing:-.01em;
  text-transform:uppercase;
}

/* ──────────────────────────────────────────────
   Utility bar
   ────────────────────────────────────────────── */
.utility{
  background:var(--ink);
  color:#fff;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.15em;
  text-transform:uppercase;
  padding:10px 0;
  position:relative; z-index:10;
}
.utility .container{
  display:flex; align-items:center; justify-content:space-between;
}
.utility .badge{ display:inline-flex; align-items:center; gap:10px; opacity:.85; }
.utility .badge::before{
  content:""; width:7px; height:7px; background:var(--blue); border-radius:50%;
}
.utility-links{ display:flex; gap:24px; }
.utility-links a{ opacity:.7; transition:opacity .2s ease; }
.utility-links a:hover{ opacity:1; }

/* ──────────────────────────────────────────────
   Header
   ────────────────────────────────────────────── */
.header{
  position:sticky; top:0; z-index:50;
  background:rgba(244,242,236,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rule);
}
.header .container{
  display:flex; flex-direction:column; align-items:center;
  gap:18px;
  padding-top:24px; padding-bottom:18px;
  position:relative;
}
.logo img{ width:auto; height:54px; }
.nav{
  display:flex; align-items:center; justify-content:center; gap:32px;
  flex-wrap:wrap;
  font-size:14px; font-weight:500;
}
.nav a{
  color:var(--ink); position:relative;
  transition:color .2s ease;
}
.nav a:hover{ color:var(--blue); }
.nav a::after{
  content:""; position:absolute; bottom:-6px; left:0;
  height:1px; width:0; background:var(--blue);
  transition:width .25s ease;
}
.nav a:hover::after{ width:100%; }
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 22px;
  background:var(--ink); color:#fff;
  font-size:14px; font-weight:600; letter-spacing:.02em;
  border:1px solid var(--ink);
  transition:background .2s ease, color .2s ease, transform .15s ease;
}
.btn:hover{ background:var(--blue); border-color:var(--blue); transform:translateY(-1px); }
.btn.outline{
  background:transparent; color:var(--ink);
}
.btn.outline:hover{ background:var(--ink); color:#fff; }
.menu-toggle{
  display:none;
  font-family:var(--mono); font-size:11px; letter-spacing:.18em;
  text-transform:uppercase; color:var(--ink);
  background:none; border:1px solid var(--rule);
  padding:8px 14px; cursor:pointer;
}

/* ──────────────────────────────────────────────
   Section base
   ────────────────────────────────────────────── */
.section{ padding:100px 0; position:relative; }

/* ──────────────────────────────────────────────
   Blog index — hero + listing grid
   ────────────────────────────────────────────── */
.blog-hero{
  padding:80px 0 60px;
  border-bottom:1px solid var(--rule);
}
.blog-hero h1{
  font-family:var(--display);
  font-size:clamp(56px, 8vw, 104px);
  line-height:.92;
  letter-spacing:-.01em;
  margin:18px 0 24px;
  text-transform:uppercase;
}
.blog-hero p.lede{
  font-size:19px; line-height:1.55; color:var(--ink-soft);
  max-width:62ch;
}

.post-list{
  padding:80px 0 120px;
  background:var(--paper);
}
.post-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(360px, 1fr));
  gap:48px 40px;
}
.post-card{
  background:#fff;
  border:1px solid var(--rule);
  display:flex; flex-direction:column;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.post-card:hover{
  transform:translateY(-3px);
  border-color:var(--rule-strong);
  box-shadow:0 20px 50px rgba(14,18,24,.08);
}
.post-card-img{
  aspect-ratio: 16 / 9;
  background:var(--paper-deep);
  overflow:hidden;
}
.post-card-img img{
  width:100%; height:100%; object-fit:cover;
  transition:transform .5s ease;
}
.post-card:hover .post-card-img img{ transform:scale(1.03); }
.post-card.no-img{
  border-top:4px solid var(--blue);
}
.post-card.no-img .post-card-body{
  padding-top:36px;
}
.post-card-body{
  padding:28px 28px 32px;
  display:flex; flex-direction:column;
  flex:1;
}
.post-card-meta{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-mute);
  margin-bottom:14px;
  display:flex; gap:14px; flex-wrap:wrap;
}
.post-card-meta .cat{ color:var(--blue); }
.post-card h2{
  font-family:var(--display);
  font-size:28px;
  line-height:1;
  letter-spacing:.005em;
  text-transform:uppercase;
  margin:0 0 16px;
  color:var(--ink);
  transition:color .25s ease;
}
.post-card:hover h2{ color:var(--blue); }
.post-card p.excerpt{
  font-size:15px; line-height:1.6; color:var(--ink-soft);
  margin:0 0 22px;
}
.post-card .read-more{
  margin-top:auto;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--blue);
  display:inline-flex; align-items:center; gap:8px;
}

.post-list-empty{
  font-family:var(--mono); font-size:13px;
  letter-spacing:.15em; text-transform:uppercase;
  color:var(--ink-mute);
  padding:40px 0;
}

/* ──────────────────────────────────────────────
   Single post layout
   ────────────────────────────────────────────── */
.post-hero{
  padding:80px 0 60px;
  border-bottom:1px solid var(--rule);
  background:var(--paper);
}
.post-hero .container{
  max-width: 820px;
  padding:0 32px;
}
.post-breadcrumb{
  font-family:var(--mono); font-size:11px;
  letter-spacing:.18em; text-transform:uppercase;
  color:var(--ink-mute);
  margin-bottom:32px;
}
.post-breadcrumb a{ color:var(--ink-mute); transition:color .2s; }
.post-breadcrumb a:hover{ color:var(--blue); }
.post-breadcrumb span.sep{ margin:0 8px; opacity:.45; }
.post-hero h1{
  font-family:var(--display);
  font-size:clamp(40px, 5.5vw, 64px);
  line-height:1;
  letter-spacing:-.005em;
  margin:16px 0 28px;
  text-transform:uppercase;
}
.post-hero .lede{
  font-size:20px; line-height:1.6; color:var(--ink-soft);
  margin:0 0 36px;
  max-width: 62ch;
}
.post-meta{
  display:flex; flex-wrap:wrap; gap:28px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-mute);
  padding-top:24px;
  border-top:1px solid var(--rule);
}
.post-meta .meta-label{ display:block; color:var(--blue); margin-bottom:4px; }

.post-hero-img{
  margin-top:48px;
  border:1px solid var(--rule);
  background:#fff;
  padding:14px;
}
.post-hero-img img{ display:block; width:100%; height:auto; }

/* Article body */
.post-body{
  padding:80px 0 100px;
  background:#fff;
}
.post-body .container{
  max-width: var(--reading);
  padding: 0 32px;
}
.post-body p,
.post-body ul,
.post-body ol{
  font-size:18px;
  line-height:1.7;
  color:var(--ink-soft);
  margin:0 0 24px;
}
.post-body p:first-of-type{
  font-size:21px;
  line-height:1.55;
  color:var(--ink);
}
.post-body p:first-of-type::first-line{ font-weight:500; }
.post-body strong{ color:var(--ink); font-weight:600; }
.post-body em{ color:var(--ink); }
.post-body a{
  color:var(--blue);
  border-bottom:1px solid rgba(15,76,143,.3);
  transition:border-color .2s, color .2s;
}
.post-body a:hover{ color:var(--blue-dark); border-bottom-color:var(--blue); }
.post-body h2{
  font-family:var(--display);
  font-size:36px;
  line-height:1;
  letter-spacing:.005em;
  text-transform:uppercase;
  margin:56px 0 24px;
  color:var(--ink);
}
.post-body h2:first-child{ margin-top:0; }
.post-body h3{
  font-family:var(--display);
  font-size:22px;
  line-height:1.1;
  letter-spacing:.01em;
  text-transform:uppercase;
  margin:40px 0 16px;
  color:var(--ink);
}
.post-body h4{
  font-family:var(--sans);
  font-size:17px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:.005em;
  margin:32px 0 10px;
  color:var(--ink);
}
.post-body ul,
.post-body ol{
  padding-left:24px;
}
.post-body ul li,
.post-body ol li{
  margin-bottom:10px;
}
.post-body ul li::marker{ color:var(--blue); }
.post-body blockquote{
  margin:36px 0;
  padding: 4px 0 4px 28px;
  border-left:3px solid var(--blue);
  font-family:var(--display);
  font-size:26px;
  line-height:1.2;
  letter-spacing:.005em;
  text-transform:uppercase;
  color:var(--ink);
}
.post-body hr{
  border:none;
  border-top:1px solid var(--rule);
  margin:48px 0;
}

/* Comparison / data tables */
.post-body table{
  width:100%;
  border-collapse:collapse;
  margin:32px 0;
  font-size:15.5px;
  line-height:1.5;
}
.post-body table th,
.post-body table td{
  text-align:left;
  padding:12px 16px;
  border-bottom:1px solid var(--rule);
  vertical-align:top;
}
.post-body table thead th{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--blue);
  font-weight:500;
  border-bottom:1px solid var(--rule-strong);
}
.post-body table tbody tr:last-child td{ border-bottom:1px solid var(--rule-strong); }
.post-body table td:first-child{ font-weight:600; color:var(--ink); }
.post-body table td:nth-child(2){ font-family:var(--mono); font-size:14px; white-space:nowrap; }

/* Callout box for stats / pull-out */
.callout{
  background:var(--paper);
  border:1px solid var(--rule);
  border-left:3px solid var(--blue);
  padding:24px 28px;
  margin:36px 0;
}
.callout .callout-eyebrow{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:8px;
  font-weight:500;
}
.callout p{ font-size:16px !important; line-height:1.6; margin:0 !important; color:var(--ink-soft) !important; }
.callout p:first-of-type::first-line{ font-weight:400 !important; }

/* CTA block at end of post */
.post-cta{
  background:var(--ink);
  color:#fff;
  padding:80px 0;
}
.post-cta .container{ max-width: 820px; padding:0 32px; }
.post-cta h2{
  font-family:var(--display);
  font-size:clamp(36px, 5vw, 56px);
  line-height:1;
  letter-spacing:.005em;
  text-transform:uppercase;
  color:#fff;
  margin:14px 0 20px;
}
.post-cta p{
  font-size:18px; line-height:1.55;
  color:rgba(255,255,255,.78);
  margin:0 0 32px;
  max-width:54ch;
}
.post-cta .eyebrow{ color:#7BC0FF; }
.post-cta .eyebrow::before{ background:#7BC0FF; }
.post-cta .btn{
  background:#fff; color:var(--ink); border-color:#fff;
}
.post-cta .btn:hover{ background:var(--blue); color:#fff; border-color:var(--blue); }
.post-cta-actions{ display:flex; gap:14px; flex-wrap:wrap; }
.post-cta .btn.outline{
  background:transparent; color:#fff; border-color:rgba(255,255,255,.4);
}
.post-cta .btn.outline:hover{ background:#fff; color:var(--ink); border-color:#fff; }

/* Back link */
.post-nav{
  background:var(--paper);
  padding:40px 0 80px;
}
.post-nav .container{ max-width: 820px; padding:0 32px; }
.post-nav a.back{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--blue);
  display:inline-flex; align-items:center; gap:8px;
}

/* ──────────────────────────────────────────────
   Footer
   ────────────────────────────────────────────── */
.footer{
  background:var(--ink);
  color:#fff;
  padding:80px 0 40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand img{ width:auto; height:30px; opacity:.95; }
.footer-brand p{
  font-size:13px; line-height:1.65;
  color:rgba(255,255,255,.6);
  margin-top:18px;
  max-width:38ch;
}
.footer h5{
  font-family:var(--mono); font-size:11px;
  letter-spacing:.2em; text-transform:uppercase;
  color:#7BC0FF; font-weight:500;
  margin:0 0 18px;
}
.footer ul{
  list-style:none; padding:0; margin:0;
}
.footer ul li{
  font-size:14px;
  color:rgba(255,255,255,.7);
  margin-bottom:10px;
  line-height:1.5;
}
.footer ul li a{
  color:rgba(255,255,255,.7);
  transition:color .2s ease;
}
.footer ul li a:hover{ color:#fff; }
.footer-bottom{
  margin-top:32px;
  display:flex; justify-content:space-between; flex-wrap:wrap;
  gap:14px;
  font-family:var(--mono); font-size:11px;
  letter-spacing:.18em; text-transform:uppercase;
  color:rgba(255,255,255,.45);
}

/* ──────────────────────────────────────────────
   Responsive
   ────────────────────────────────────────────── */
@media (max-width: 980px){
  .nav{ display:none; }
  .menu-toggle{ display:inline-flex; position:absolute; right:32px; top:24px; }
  .nav.open{
    display:flex; flex-direction:column;
    position:absolute; top:100%; left:0; right:0;
    background:var(--paper);
    border-bottom:1px solid var(--rule);
    padding:18px 32px 24px;
    align-items:flex-start; gap:18px;
  }
  .header .container{ padding-top:20px; padding-bottom:16px; gap:14px; }
  .logo img{ height:46px; }
  .footer-grid{ grid-template-columns:repeat(2, 1fr); }
  .post-grid{ grid-template-columns:1fr; }
}
@media (max-width: 700px){
  .container{ padding:0 22px; }
  .utility .container{ flex-direction:column; gap:6px; align-items:flex-start; }
  .utility-links{ gap:14px; }
  .post-hero .container,
  .post-body .container,
  .post-cta .container,
  .post-nav .container{ padding:0 22px; }
  .post-body p,
  .post-body ul,
  .post-body ol{ font-size:16.5px; }
  .post-body p:first-of-type{ font-size:18.5px; }
  .post-body h2{ font-size:28px; margin-top:44px; }
  .post-body h3{ font-size:19px; }
  .post-body blockquote{ font-size:20px; padding-left:20px; }
  .post-body table{ font-size:14px; }
  .post-body table th, .post-body table td{ padding:10px 12px; }
  .post-hero{ padding:48px 0 40px; }
  .post-body{ padding:56px 0 72px; }
  .footer-grid{ grid-template-columns:1fr; gap:32px; }
  .post-meta{ gap:18px; }
}