/* ─── Field Notes: shared stylesheet (matches frontiercatalyst.io design system) ─── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:       #1E3A5F;
  --teal:       #1B7D90;
  --teal-light: #E8F4F7;
  --gold:       #E8A020;
  --gold-light: #FDF4E3;
  --cream:      #FAF7F2;
  --rule:       #D0DDE6;
  --body-text:  #2C3E50;
  --muted:      #6B7E8E;
  --nav-h:      64px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: Georgia, 'Times New Roman', serif;
  color: var(--body-text);
  background: #fff;
  line-height: 1.7;
  padding-top: var(--nav-h);
}

h1, h2, h3 { font-family: Georgia, 'Times New Roman', serif; color: var(--navy); line-height: 1.3; }

a { color: var(--teal); }

/* ─── Navigation (mirrors homepage marketing nav) ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--navy);
  z-index: 100;
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(to right, var(--gold), var(--teal)) 1;
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 2rem; height: 100%;
  display: flex; align-items: center; justify-content: center; gap: 2.5rem;
}
.nav-logo { height: 44px; width: auto; padding: 6px 0; }
.nav-links { display: flex; align-items: center; gap: 1.4rem; list-style: none; }
.nav-links a {
  color: rgba(255,255,255,0.7); text-decoration: none;
  font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase;
  font-weight: 500; white-space: nowrap; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-cta {
  background: var(--teal); color: #fff !important;
  padding: 0.4rem 1rem; border-radius: 2px; transition: background 0.2s !important;
}
.nav-cta:hover { background: #1a6e7e !important; }
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  padding: 4px; background: none; border: none;
}
.nav-hamburger span { display: block; width: 22px; height: 2px; background: rgba(255,255,255,0.8); transition: all 0.2s; }
.nav-mobile {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0;
  background: var(--navy); border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.5rem 2rem; z-index: 99;
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block; color: rgba(255,255,255,0.75); text-decoration: none;
  font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.75rem 0; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav-mobile a:last-child { border-bottom: none; }

/* ─── Layout ─── */
.container--narrow { max-width: 760px; margin: 0 auto; padding: 0 2rem; }

/* ─── Hub header band ─── */
.fn-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--teal) 100%);
  padding: calc(var(--nav-h) + 3.5rem) 2rem 3.5rem;
  text-align: center; position: relative; margin-top: calc(-1 * var(--nav-h));
}
.fn-header::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(to right, var(--gold), var(--teal));
}
.fn-header .eyebrow {
  display: inline-block; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 1rem;
}
.fn-header h1 { color: #fff; font-size: clamp(1.6rem, 3.4vw, 2.4rem); margin-bottom: 1rem; }
.fn-header p { color: rgba(255,255,255,0.7); font-size: 1.05rem; max-width: 600px; margin: 0 auto; font-style: italic; }

/* ─── Hub card grid ─── */
.fn-grid-wrap { background: var(--cream); padding: 3.5rem 0 5rem; border-bottom: 1px solid var(--rule); }
.fn-grid {
  max-width: 1100px; margin: 0 auto; padding: 0 2rem;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
}
.fn-card {
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid var(--rule); border-top: 4px solid var(--teal);
  padding: 1.75rem; text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, border-top-color 0.2s;
}
.fn-card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(30,58,95,0.1); border-top-color: var(--gold); text-decoration: none; }
.fn-card.is-upcoming { opacity: 0.6; border-top-color: var(--muted); }
.fn-card-eyebrow { font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold); font-weight: 700; margin-bottom: 0.6rem; }
.fn-card-title { font-family: Georgia, serif; font-size: 1.25rem; font-weight: 700; color: var(--navy); line-height: 1.3; margin-bottom: 0.75rem; }
.fn-card-excerpt { font-size: 0.92rem; color: var(--body-text); line-height: 1.65; margin-bottom: 1.25rem; }
.fn-card-meta { margin-top: auto; font-size: 0.75rem; color: var(--muted); letter-spacing: 0.04em; }

/* ─── Article ─── */
.fn-article { max-width: 720px; margin: 0 auto; padding: 3.5rem 2rem 4.5rem; }
.fn-back {
  display: inline-block; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
  font-weight: 600; color: var(--teal); text-decoration: none; margin-bottom: 2rem;
}
.fn-back:hover { opacity: 0.7; }
.fn-article-eyebrow { display: inline-block; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal); margin-bottom: 1rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--teal); }
.fn-article h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.2; margin-bottom: 1rem; }
.fn-article-meta { font-size: 0.8rem; color: var(--muted); letter-spacing: 0.04em; padding-bottom: 1.75rem; margin-bottom: 2.25rem; border-bottom: 2px solid transparent; border-image: linear-gradient(to right, var(--teal) 0%, var(--gold) 55%, transparent 100%) 1; }
.fn-article p { font-size: 1.08rem; line-height: 1.85; margin-bottom: 1.5rem; color: var(--body-text); }
.fn-article p strong { color: var(--navy); }
.fn-article ul { margin: 0 0 1.5rem 1.5rem; }
.fn-article li { font-size: 1.08rem; line-height: 1.7; margin-bottom: 0.5rem; }
.fn-article .closer { font-style: italic; color: var(--navy); font-size: 1.15rem; border-top: 1px solid var(--rule); padding-top: 1.75rem; margin-top: 2.25rem; }

/* ─── Footer ─── */
footer.fn-footer { background: var(--navy); padding: 3rem 0; position: relative; }
footer.fn-footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(to right, var(--gold), var(--teal)); }
.fn-footer-inner { max-width: 1100px; margin: 0 auto; padding: 0 2rem; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 1rem; }
.fn-footer-inner img { height: 28px; width: auto; opacity: 0.8; }
.fn-footer-tagline { color: rgba(255,255,255,0.4); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; }
.fn-footer-copy { color: rgba(255,255,255,0.3); font-size: 0.75rem; }
.fn-footer a { color: var(--gold); text-decoration: none; }

/* Connect band (shared CTA across pages) */
.connect-band { background: var(--navy); padding: 64px 2rem; text-align: center; position: relative; }
.connect-band::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(to right, var(--gold), var(--teal)); }
.connect-label { display: inline-block; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); border-bottom: 2px solid var(--gold); padding-bottom: 0.4rem; margin-bottom: 1.25rem; }
.connect-h2 { font-family: Georgia, 'Times New Roman', serif; font-size: clamp(1.15rem, 2.2vw, 1.6rem); color: #fff; line-height: 1.4; max-width: 580px; margin: 0 auto 1.75rem; }
.connect-link { display: inline-block; background: var(--gold); color: var(--navy); text-decoration: none; font-size: 0.85rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.9rem 2.5rem; border-radius: 2px; }
.connect-link:hover { background: #d4901c; }

/* ─── Responsive ─── */
@media (max-width: 980px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .fn-grid { grid-template-columns: 1fr; }
}