/* Whitepapers site — Monique Nijboer
   Base palette: white background with a neutral slate-blue accent.
   Per-page accent (--accent) can be overridden with a `style="--accent: #..."`
   attribute on <body> so future whitepapers keep their own tint. */

:root {
  --bg: #FFFFFF;
  --bg-soft: #F1F5F8;
  --text: #1E2A33;
  --muted: #6B7885;
  --border: #E5EBEF;
  --accent: #2C4A5E;      /* default: slate blue */
  --accent-soft: #F0F4F7;
  --accent-hover: #22394A;
  --radius: 6px;
  --shadow: 0 2px 12px rgba(30, 42, 51, .08);
  --shadow-lg: 0 12px 40px rgba(30, 42, 51, .12);
  --maxw: 780px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 22px 0;
  background: var(--bg);
}
.site-header .wrap { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; flex-wrap: wrap; }
.brand {
  font-weight: 700; font-size: 17px; color: var(--text); text-decoration: none;
  letter-spacing: -0.01em;
}
.brand span.dot { color: var(--accent); }
.nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: 15px; }
.nav a:hover { color: var(--text); }

/* Hero */
.hero { padding: 64px 0 24px; }
.eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.hero h1 {
  font-size: 42px; line-height: 1.15; margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.hero .lead {
  font-size: 19px; line-height: 1.55; color: var(--text);
  margin: 0; max-width: 640px;
}
.hero .rule {
  width: 60px; height: 3px; background: var(--accent);
  margin: 22px 0 22px;
}

/* Prose */
.prose { font-size: 17px; line-height: 1.7; }
.prose h2 { font-size: 22px; margin: 44px 0 12px; letter-spacing: -0.01em; }
.prose h3 { font-size: 17px; margin: 28px 0 8px; color: var(--accent); }
.prose p { margin: 0 0 14px; }
.prose ul { margin: 8px 0 16px; padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose blockquote {
  margin: 18px 0; padding: 14px 18px;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text);
}

/* Whitepaper cards on the hub */
.cards { display: grid; gap: 20px; margin: 40px 0 60px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .cards { grid-template-columns: 1fr 1fr; } }

.card {
  display: flex; flex-direction: column;
  padding: 26px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); text-decoration: none; color: var(--text);
  transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease;
}
.card:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateY(-1px); }
.card .card-eyebrow {
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--card-accent, var(--accent));
  margin-bottom: 10px;
}
.card h3 { margin: 0 0 8px; font-size: 20px; letter-spacing: -0.01em; }
.card p { margin: 0 0 14px; color: var(--text); font-size: 15px; }
.card .meta { margin-top: auto; font-size: 13px; color: var(--muted); }

/* Download panel on a whitepaper page */
.download-panel {
  display: flex; gap: 28px; align-items: flex-start;
  margin: 40px 0 20px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  flex-wrap: wrap;
}
.download-panel .preview {
  flex: 0 0 240px;
  max-width: 100%;
}
.download-panel .preview img {
  display: block; width: 100%; height: auto;
  border-radius: 4px;
}
.download-panel .cta { flex: 1 1 320px; }
.download-panel h2 { margin: 0 0 10px; font-size: 20px; }
.download-panel p { margin: 0 0 16px; color: var(--text); font-size: 15px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px; font-size: 16px; font-weight: 600;
  background: var(--accent); color: #fff;
  border-radius: var(--radius); text-decoration: none;
  border: 1px solid var(--accent);
  transition: background .15s ease, transform .15s ease;
}
.btn:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.btn svg { width: 18px; height: 18px; }
.btn-secondary {
  background: transparent; color: var(--accent);
}
.btn-secondary:hover { background: var(--accent-soft); color: var(--accent); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* What's in it list on whitepaper page */
.contents {
  display: grid; gap: 14px; margin: 28px 0 40px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .contents { grid-template-columns: 1fr 1fr; } }
.contents .item {
  padding: 16px 18px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg);
}
.contents .item strong { display: block; margin-bottom: 4px; font-size: 15px; }
.contents .item span { color: var(--muted); font-size: 14px; line-height: 1.5; }

/* Share block */
.share {
  margin: 40px 0; padding: 22px 24px;
  border: 1px dashed var(--border); border-radius: var(--radius);
  background: var(--bg);
}
.share h3 { margin: 0 0 8px; font-size: 17px; color: var(--text); }
.share p { margin: 0 0 12px; font-size: 15px; }
.share .btn-row { margin-top: 6px; }

/* Footer */
.site-footer {
  margin-top: 80px; padding: 30px 0 40px;
  border-top: 1px solid var(--border);
  font-size: 13px; color: var(--muted);
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }
.site-footer .disclaimer { max-width: 520px; }

/* Small utilities */
.muted { color: var(--muted); }
.small { font-size: 14px; }
hr.soft { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
