/* blog.css - SNRG Field Guide editorial styles.
   Mobile-first. Themed by 7 CSS variables baked server-side (no-JS safe) and
   re-applied by blog-chrome.js. Core content stays readable if this file or JS
   fails (semantic HTML, sensible defaults). */

:root {
  /* themed (overridden per brand by the baked <style> + blog-chrome.js) */
  --blog-accent: #16c172;
  --blog-accent-dark: #0f9a5a;
  --blog-ink: #f3f5f8;
  --blog-muted: #aeb6c2;
  --blog-bg: #0c0d10;
  --blog-panel: #16191f;
  --blog-border: #262b34;
  /* derived / fixed */
  --blog-panel-2: #1b1f27;
  --blog-blue: #5b9bff;
  --blog-maxw: 680px;
  --blog-wide: 1080px;
  --blog-radius: 14px;
  --blog-radius-sm: 9px;
  --blog-shadow: 0 1px 0 rgba(255,255,255,.02), 0 18px 40px -24px rgba(0,0,0,.7);
  --blog-serif: "Iowan Old Style", "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, "Times New Roman", serif;
  --blog-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --post-seed: 152; /* per-post hue, overridden inline */
  --g-angle: 135deg; /* per-post gradient angle, overridden inline */
}

* { box-sizing: border-box; }

body.snrg-blog {
  margin: 0;
  color: var(--blog-ink);
  background:
    radial-gradient(1100px 520px at 50% -8%, color-mix(in srgb, var(--blog-accent) 9%, transparent), transparent 70%),
    var(--blog-bg);
  background-attachment: fixed;
  font-family: var(--blog-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.blog-wrap { width: 100%; max-width: var(--blog-maxw); margin: 0 auto; padding: 0 22px; }
.blog-wrap--wide { max-width: var(--blog-wide); }

a { color: var(--blog-accent); }
::selection { background: color-mix(in srgb, var(--blog-accent) 30%, transparent); }
:focus-visible { outline: 2px solid var(--blog-accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- reading progress (JS enhancement) ---------- */
#read-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--blog-accent), var(--blog-blue));
  z-index: 60; transition: width .1s linear;
}

/* ---------- header / footer (injected by chrome) ---------- */
.blog-header {
  border-bottom: 1px solid var(--blog-border);
  background: color-mix(in srgb, var(--blog-bg) 82%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  position: sticky; top: 0; z-index: 40;
}
.blog-header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 22px; max-width: var(--blog-wide); margin: 0 auto; flex-wrap: wrap;
}
.blog-logo { font-weight: 800; letter-spacing: .02em; font-size: 18px; color: var(--blog-ink); text-decoration: none; }
.blog-nav { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.blog-nav a { color: var(--blog-muted); text-decoration: none; font-size: 14.5px; transition: color .15s; }
.blog-nav a:hover { color: var(--blog-ink); }
.blog-cta {
  background: var(--blog-accent); color: #04130b !important; padding: 9px 16px;
  border-radius: 999px; font-weight: 700; font-size: 14px; text-decoration: none;
  box-shadow: 0 8px 20px -10px color-mix(in srgb, var(--blog-accent) 80%, transparent);
}
.blog-cta:hover { background: var(--blog-accent-dark); }

.blog-crumb { font-size: 12.5px; color: var(--blog-muted); padding: 22px 0 0; letter-spacing: .01em; }
.blog-crumb a { color: var(--blog-muted); text-decoration: none; }
.blog-crumb a:hover { color: var(--blog-accent); }

/* ---------- listing ---------- */
.blog-hero { padding: 54px 0 8px; max-width: 760px; }
.blog-hero .eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--blog-accent); margin: 0 0 14px;
}
.blog-hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.06; margin: 0 0 14px; letter-spacing: -.02em; font-weight: 800; }
.blog-hero p { color: var(--blog-muted); font-size: clamp(16px, 2.4vw, 19px); margin: 0; max-width: 620px; }

.blog-filters { display: flex; gap: 8px; flex-wrap: wrap; padding: 30px 0 6px; }
.blog-filter {
  border: 1px solid var(--blog-border); background: var(--blog-panel); color: var(--blog-muted);
  border-radius: 999px; padding: 7px 15px; font-size: 13px; cursor: pointer; transition: all .15s;
}
.blog-filter:hover { color: var(--blog-ink); border-color: var(--blog-muted); }
.blog-filter[aria-pressed="true"] { background: var(--blog-accent); border-color: var(--blog-accent); color: #04130b; font-weight: 600; }

.post-list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 18px; grid-template-columns: repeat(2, 1fr); }
.post-card {
  position: relative; border: 1px solid var(--blog-border); border-radius: var(--blog-radius);
  padding: 24px 24px 26px; background: linear-gradient(180deg, var(--blog-panel), color-mix(in srgb, var(--blog-panel) 60%, var(--blog-bg)));
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease; overflow: hidden;
}
.post-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--blog-accent), var(--blog-blue)); opacity: .0; transition: opacity .18s;
}
.post-card:hover { border-color: color-mix(in srgb, var(--blog-accent) 55%, var(--blog-border)); transform: translateY(-3px); box-shadow: var(--blog-shadow); }
.post-card:hover::before { opacity: .9; }
/* first card spans full width = featured */
.post-list .post-card:first-child { grid-column: 1 / -1; padding: 30px 30px 32px; }
.post-list .post-card:first-child h2 { font-size: clamp(24px, 3.4vw, 32px); }
.post-card .meta { font-size: 12.5px; color: var(--blog-muted); margin: 0 0 10px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.post-card .cat { color: var(--blog-accent); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; font-size: 11.5px; }
.post-card h2 { font-size: 20px; line-height: 1.22; margin: 0 0 9px; letter-spacing: -.01em; font-weight: 750; }
.post-card h2 a { color: var(--blog-ink); text-decoration: none; }
.post-card h2 a::after { content: ""; position: absolute; inset: 0; }
.post-card:hover h2 a { color: var(--blog-accent); }
.post-card p { margin: 0; color: var(--blog-muted); font-size: 15px; line-height: 1.6; }
.post-card .more { display: inline-block; margin-top: 14px; font-size: 13.5px; font-weight: 650; color: var(--blog-accent); }

.blog-pager { display: flex; justify-content: center; gap: 8px; padding: 36px 0; }
.blog-pager button { border: 1px solid var(--blog-border); background: var(--blog-panel); color: var(--blog-ink); border-radius: 999px; padding: 8px 16px; cursor: pointer; font-size: 14px; }
.blog-pager button[disabled] { opacity: .35; cursor: default; }

/* ---------- single post ---------- */
.post-hero {
  position: relative; margin: 16px 0 0; border-radius: var(--blog-radius);
  border: 1px solid var(--blog-border); overflow: hidden;
  background:
    radial-gradient(120% 140% at calc(var(--post-seed) * 1% ) 0%, color-mix(in srgb, var(--blog-accent) 26%, transparent), transparent 55%),
    linear-gradient(var(--g-angle), color-mix(in srgb, var(--blog-blue) 16%, transparent), transparent 60%),
    var(--blog-panel);
}
.post-hero::after {
  content: ""; position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image: radial-gradient(currentColor 1px, transparent 1.4px);
  background-size: 22px 22px; color: color-mix(in srgb, var(--blog-ink) 6%, transparent);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent); mask-image: linear-gradient(180deg, #000, transparent);
}
.post-hero-inner { position: relative; padding: 30px 30px 26px; }
.post-hero .cat { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--blog-accent); margin: 0 0 12px; }
.post-hero h1 { font-size: clamp(28px, 5.2vw, 44px); line-height: 1.08; margin: 0; letter-spacing: -.02em; font-weight: 800; max-width: 18ch; }
.post-meta { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; font-size: 13.5px; color: var(--blog-muted); padding: 18px 0 4px; }
.post-meta .byline { color: var(--blog-ink); font-weight: 600; }
.post-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--blog-muted); display: inline-block; }

/* AEO quick-answer box: the direct, quotable answer near the top */
.short-answer {
  font-family: var(--blog-sans); margin: 26px 0 0; padding: 18px 22px;
  border: 1px solid color-mix(in srgb, var(--blog-accent) 32%, var(--blog-border));
  border-left: 4px solid var(--blog-accent); border-radius: var(--blog-radius);
  background: radial-gradient(120% 130% at 0% 0%, color-mix(in srgb, var(--blog-accent) 10%, var(--blog-panel)), var(--blog-panel));
}
.short-answer .sa-label { display: block; font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blog-accent); margin: 0 0 6px; }
.short-answer p { margin: 0; font-size: 17.5px; line-height: 1.55; color: var(--blog-ink); }

.post-body { font-family: var(--blog-serif); font-size: 19.5px; line-height: 1.74; margin-top: 26px; }
.post-body > p:first-of-type { font-size: 21px; color: color-mix(in srgb, var(--blog-ink) 96%, var(--blog-muted)); }
.post-body h2 { font-family: var(--blog-sans); font-size: 25px; margin: 44px 0 14px; line-height: 1.22; letter-spacing: -.01em; font-weight: 750; padding-left: 16px; position: relative; }
.post-body h2::before { content: ""; position: absolute; left: 0; top: .18em; bottom: .18em; width: 4px; border-radius: 3px; background: linear-gradient(var(--blog-accent), var(--blog-blue)); }
.post-body h3 { font-family: var(--blog-sans); font-size: 20px; margin: 32px 0 10px; font-weight: 700; }
.post-body p { margin: 0 0 20px; }
.post-body ul, .post-body ol { margin: 0 0 22px; padding-left: 6px; list-style: none; }
.post-body ol { counter-reset: li; }
.post-body li { margin: 0 0 12px; padding-left: 30px; position: relative; }
.post-body ul li::before { content: ""; position: absolute; left: 6px; top: .72em; width: 7px; height: 7px; border-radius: 2px; background: var(--blog-accent); transform: rotate(45deg); }
.post-body ol li { counter-increment: li; }
.post-body ol li::before { content: counter(li); position: absolute; left: 0; top: .05em; width: 22px; height: 22px; border-radius: 50%; background: color-mix(in srgb, var(--blog-accent) 16%, transparent); color: var(--blog-accent); font-family: var(--blog-sans); font-size: 12px; font-weight: 700; display: grid; place-items: center; }
.post-body a { color: var(--blog-accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
.post-body a:hover { color: var(--blog-blue); }
.post-body strong { color: var(--blog-ink); font-weight: 700; }
.post-body img { max-width: 100%; height: auto; border-radius: var(--blog-radius); border: 1px solid var(--blog-border); }
.post-body blockquote {
  font-family: var(--blog-sans); margin: 30px 0; padding: 22px 26px; font-size: 20px; line-height: 1.5;
  color: var(--blog-ink); border: 1px solid var(--blog-border); border-left: 4px solid var(--blog-accent);
  background: linear-gradient(120deg, color-mix(in srgb, var(--blog-accent) 8%, var(--blog-panel)), var(--blog-panel));
  border-radius: 0 var(--blog-radius) var(--blog-radius) 0;
}

.claim-note { font-family: var(--blog-sans); margin: 34px 0 0; padding: 16px 18px; background: var(--blog-panel); border: 1px solid var(--blog-border); border-radius: var(--blog-radius); font-size: 13.5px; color: var(--blog-muted); }

.post-cta {
  font-family: var(--blog-sans); margin: 46px 0 0; padding: 34px 30px; text-align: center;
  border: 1px solid color-mix(in srgb, var(--blog-accent) 35%, var(--blog-border)); border-radius: var(--blog-radius);
  background: radial-gradient(120% 130% at 50% 0%, color-mix(in srgb, var(--blog-accent) 12%, var(--blog-panel)), var(--blog-panel));
}
.post-cta h3 { margin: 0 0 8px; font-size: 23px; letter-spacing: -.01em; }
.post-cta p { margin: 0 auto 18px; color: var(--blog-muted); max-width: 46ch; }
.post-cta a.blog-cta { display: inline-block; padding: 13px 26px; font-size: 15px; }

/* author box */
.author-box { font-family: var(--blog-sans); display: flex; gap: 16px; align-items: center; margin: 40px 0 0; padding: 22px; border: 1px solid var(--blog-border); border-radius: var(--blog-radius); background: var(--blog-panel); }
.author-box .avatar { flex: 0 0 auto; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; color: #04130b; background: linear-gradient(135deg, var(--blog-accent), var(--blog-blue)); font-size: 18px; }
.author-box .who { font-weight: 700; color: var(--blog-ink); }
.author-box .bio { font-size: 14px; color: var(--blog-muted); margin: 2px 0 0; }

.related { font-family: var(--blog-sans); border-top: 1px solid var(--blog-border); margin-top: 48px; padding-top: 28px; }
.related h3 { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--blog-muted); margin: 0 0 16px; }
#related-posts { display: grid; gap: 14px; grid-template-columns: repeat(2, 1fr); }

/* table of contents (JS, desktop float) */
.post-toc { font-family: var(--blog-sans); }
@media (min-width: 1180px) {
  .post-toc { position: fixed; top: 120px; left: max(24px, calc(50vw - 600px)); width: 200px; font-size: 13px; }
  .post-toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--blog-border); }
  .post-toc li a { display: block; padding: 5px 0 5px 14px; color: var(--blog-muted); text-decoration: none; border-left: 2px solid transparent; margin-left: -1px; transition: color .15s, border-color .15s; }
  .post-toc li a:hover, .post-toc li a.active { color: var(--blog-accent); border-left-color: var(--blog-accent); }
}
@media (max-width: 1179px) { .post-toc { display: none; } }

.share-bar { font-family: var(--blog-sans); display: flex; gap: 8px; align-items: center; margin: 30px 0 0; flex-wrap: wrap; }
.share-bar span { font-size: 13px; color: var(--blog-muted); margin-right: 4px; }
.share-bar a, .share-bar button { border: 1px solid var(--blog-border); background: var(--blog-panel); border-radius: 999px; padding: 8px 16px; font-size: 13px; color: var(--blog-ink); text-decoration: none; cursor: pointer; transition: border-color .15s, color .15s; }
.share-bar a:hover, .share-bar button:hover { border-color: var(--blog-accent); color: var(--blog-accent); }

.blog-footer { border-top: 1px solid var(--blog-border); margin-top: 60px; padding: 34px 22px; background: var(--blog-panel); color: var(--blog-muted); font-size: 14px; }
.blog-footer-inner { max-width: var(--blog-wide); margin: 0 auto; display: flex; gap: 16px; justify-content: space-between; flex-wrap: wrap; }
.blog-footer a { color: var(--blog-muted); }

@media (prefers-reduced-motion: reduce) { *, *::before { transition: none !important; } }

@media (max-width: 720px) {
  .post-list, #related-posts { grid-template-columns: 1fr; }
  .post-list .post-card:first-child { padding: 24px; }
  .blog-hero { padding: 38px 0 6px; }
  .post-hero-inner { padding: 24px 22px; }
  .post-body { font-size: 18.5px; }
  .post-body > p:first-of-type { font-size: 19.5px; }
}