/* Shared styles for the Detection Engine blog.
   Tokens and base components mirror index.html so the blog reads as
   part of the same site. */

:root{
  --canvas:#F6F2E9;
  --canvas-alt:#EEE7D8;
  --card:#FFFEFB;
  --ink:#1C2B27;
  --ink-soft:#54635E;
  --ink-faint:#8A968F;
  --tyne:#3F6350;
  --tyne-deep:#2C4738;
  --amber:#DE9247;
  --amber-deep:#BC7433;
  --line:#DCD3BE;
  --radius:14px;
  --wrap:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--canvas);
  color:var(--ink);
  font-family:'Work Sans', sans-serif;
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:'Fraunces', serif;
  font-weight:600;
  line-height:1.15;
  margin:0;
  color:var(--ink);
}
p{margin:0;}
a{color:inherit;}
img{max-width:100%; display:block;}
.wrap{max-width:var(--wrap); margin:0 auto; padding:0 28px;}
.mono{
  font-family:'IBM Plex Mono', monospace;
  letter-spacing:0.02em;
}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  text-transform:uppercase;
  letter-spacing:0.14em;
  font-size:12.5px;
  font-weight:500;
  color:var(--tyne-deep);
}
::selection{ background:var(--amber); color:#fff; }

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:'Work Sans', sans-serif;
  font-weight:600;
  font-size:15px;
  padding:13px 24px;
  border-radius:999px;
  text-decoration:none;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--amber); color:#241408; }
.btn-primary:hover{ background:var(--amber-deep); box-shadow:0 8px 20px -8px rgba(222,146,71,.7); }
.btn-outline{ background:transparent; border-color:var(--tyne); color:var(--tyne-deep); }
.btn-outline:hover{ background:var(--tyne); color:#fff; }

/* ---------- NAV (solid, non-hero variant used on blog pages) ---------- */
.nav{
  padding:22px 0;
  background:var(--tyne-deep);
  position:relative;
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; }
.brand{
  font-family:'Fraunces', serif;
  font-weight:600;
  font-size:20px;
  color:#fff;
  text-decoration:none;
  letter-spacing:0.01em;
}
.brand span{ color:var(--amber); }
.nav-links{ display:flex; align-items:center; gap:28px; }
.nav-links a{
  color:rgba(255,255,255,.88);
  text-decoration:none;
  font-size:14.5px;
  font-weight:500;
}
.nav-links a:hover{ color:#fff; }
.nav-links a.current{ color:var(--amber); }
.nav-toggle{
  display:none;
  align-items:center; justify-content:center;
  width:42px; height:42px;
  background:transparent;
  border:1.5px solid rgba(255,255,255,.5);
  border-radius:8px;
  padding:0;
  cursor:pointer;
}
.nav-toggle .bar{
  display:block; width:18px; height:2px;
  background:#fff;
  position:relative;
  transition:transform .18s ease, opacity .18s ease;
}
.nav-toggle .bar::before, .nav-toggle .bar::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:#fff;
  transition:transform .18s ease, opacity .18s ease;
}
.nav-toggle .bar::before{ top:-6px; }
.nav-toggle .bar::after{ top:6px; }
.nav-toggle.open .bar{ background:transparent; }
.nav-toggle.open .bar::before{ transform:translateY(6px) rotate(45deg); }
.nav-toggle.open .bar::after{ transform:translateY(-6px) rotate(-45deg); }

/* ---------- BLOG HEADER ---------- */
.blog-header{
  background:var(--canvas-alt);
  border-bottom:1px solid var(--line);
  padding:64px 0 48px;
}
.blog-header h1{ font-size:clamp(32px,4.4vw,48px); margin:12px 0 14px; }
.blog-header p{ color:var(--ink-soft); font-size:17px; max-width:600px; }

/* ---------- POST LIST ---------- */
.post-list{ padding:64px 0 96px; }
.post-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
  max-width:820px;
}
.post-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px 32px;
  text-decoration:none;
  color:inherit;
  position:relative;
  overflow:hidden;
  transition:transform .18s ease, box-shadow .18s ease;
}
.post-card::before{
  content:"";
  position:absolute; top:0; left:0; bottom:0; width:4px;
  background:linear-gradient(180deg, var(--tyne), var(--amber));
}
.post-card:hover{ transform:translateY(-2px); box-shadow:0 14px 28px -18px rgba(28,43,39,.35); }
.post-card .meta{
  display:flex; align-items:center; gap:12px;
  font-family:'IBM Plex Mono', monospace;
  font-size:12px; text-transform:uppercase; letter-spacing:.1em;
  color:var(--ink-faint);
  margin-bottom:12px;
}
.post-card .meta .tag{
  color:#fff; background:var(--tyne);
  padding:2px 8px; border-radius:5px;
  letter-spacing:.06em;
}
.post-card h2{ font-size:23px; margin-bottom:10px; }
.post-card p.excerpt{ color:var(--ink-soft); font-size:15.5px; margin-bottom:14px; }
.post-card .read-more{
  font-family:'IBM Plex Mono', monospace;
  font-size:13px; font-weight:600;
  color:var(--tyne-deep);
}
.post-card:hover .read-more{ color:var(--amber-deep); }

/* ---------- ARTICLE ---------- */
.article-header{
  background:var(--canvas-alt);
  border-bottom:1px solid var(--line);
  padding:56px 0 40px;
}
.article-header .wrap{ max-width:740px; }
.article-header .eyebrow{ display:block; }
.article-header h1{ font-size:clamp(28px,4vw,42px); margin:12px 0 16px; }
.article-header .meta{
  font-family:'IBM Plex Mono', monospace;
  font-size:12.5px; text-transform:uppercase; letter-spacing:.1em;
  color:var(--ink-faint);
}
.article-body{ padding:56px 0 96px; }
.article-body .wrap{ max-width:740px; }
.prose{ font-size:17px; color:var(--ink); }
.prose > * + *{ margin-top:20px; }
.prose h2{ font-size:26px; margin-top:44px; }
.prose h3{ font-size:20px; margin-top:32px; }
.prose p{ color:var(--ink); }
.prose ul, .prose ol{ padding-left:22px; color:var(--ink); }
.prose li + li{ margin-top:8px; }
.prose strong{ color:var(--ink); }
.prose blockquote{
  margin:0; padding:18px 24px;
  border-left:3px solid var(--amber);
  background:var(--card);
  border-radius:0 10px 10px 0;
  color:var(--ink-soft);
  font-style:italic;
}
.prose code{
  font-family:'IBM Plex Mono', monospace;
  font-size:14.5px;
  background:var(--canvas-alt);
  padding:2px 6px;
  border-radius:4px;
}
.prose pre{
  background:var(--ink);
  color:#F4EFDF;
  padding:20px 22px;
  border-radius:10px;
  overflow-x:auto;
}
.prose pre code{ background:none; padding:0; color:inherit; }
.back-link{
  display:inline-flex; align-items:center; gap:6px;
  font-family:'IBM Plex Mono', monospace;
  font-size:13.5px; font-weight:600;
  color:var(--tyne-deep);
  text-decoration:none;
  margin-bottom:28px;
}
.back-link:hover{ color:var(--amber-deep); }

.article-cta{
  margin-top:56px;
  padding:32px;
  background:var(--tyne-deep);
  border-radius:var(--radius);
  color:#fff;
}
.article-cta p{ color:rgba(255,255,255,.85); margin-bottom:18px; }
.article-cta h3{ color:#fff; font-size:21px; margin-bottom:10px; }

/* ---------- FOOTER ---------- */
footer{ background:var(--ink); color:rgba(244,239,223,.7); padding:30px 0; font-size:13.5px; }
footer .wrap{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; }
footer a{ color:rgba(244,239,223,.9); text-decoration:none; }
footer a:hover{ text-decoration:underline; }

/* ---------- RESPONSIVE ---------- */
@media (max-width:560px){
  .post-card{ padding:24px 22px; }
  .wrap{ padding:0 20px; }
  .blog-header{ padding:48px 0 36px; }
  .article-header{ padding:44px 0 32px; }
  .article-body{ padding:44px 0 72px; }
  .post-list{ padding:48px 0 72px; }
}
@media (max-width:680px){
  .nav-toggle{ display:inline-flex; }
  .nav-links{
    position:absolute; top:100%; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:0;
    background:var(--tyne-deep);
    padding:6px 28px 18px;
    display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:13px 0; border-bottom:1px solid rgba(255,255,255,.14); font-size:15px; }
}

/* focus visibility */
a:focus-visible, button:focus-visible{
  outline:2.5px solid var(--amber);
  outline-offset:3px;
}