/* ETF Passion Lab — static site */
:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --text: #e8edf4;
  --muted: #9aa8bc;
  --accent: #3d9cf5;
  --accent2: #5ee0a0;
  --border: #2a3548;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 1.25rem; }
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  max-width: 900px;
}
.brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 1.05rem; }
nav { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
nav a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
nav a:hover { color: var(--accent); }
.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-weight: 600;
}
main { padding: 2rem 0 3rem; }
h1 { font-size: 1.85rem; line-height: 1.25; margin: 0 0 1rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 0.75rem; color: var(--accent2); }
p, li { color: var(--muted); }
.lead { font-size: 1.1rem; color: var(--text); }
.hero { margin-bottom: 2rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.5rem 0; }
.btn {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin: 1rem 0;
}
ul { padding-left: 1.25rem; }
.blog-list { list-style: none; padding: 0; }
.blog-list li {
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 0;
}
.blog-list a { color: var(--text); text-decoration: none; font-weight: 500; }
.blog-list a:hover { color: var(--accent); }
.blog-meta { font-size: 0.85rem; color: var(--muted); }
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  font-size: 0.85rem;
}
.site-footer a { color: var(--accent); }
@media (max-width: 600px) {
  .site-header .wrap { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}