/* Shared chrome (navbar, footer, buttons, base tokens) for fn8a static pages
   that live outside index.html. Copied from index.html's inline <style> —
   keep in sync by hand if the homepage chrome changes. */

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

:root {
  --primary: #1677ff;
  --primary-light: #4096ff;
  --primary-glow: rgba(22, 119, 255, 0.18);
  --dark: #060d1f;
  --dark-2: #0a1628;
  --dark-3: #0d1f3c;
  --text-muted: rgba(255,255,255,0.55);
  --text-dim: rgba(255,255,255,0.35);
  --border-dark: rgba(255,255,255,0.08);
  --border-light: #e8edf5;
  --bg-light: #f8faff;
  --radius: 14px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: #fff;
  color: #1a1a2e;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Navbar ─── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 64px;
  background: rgba(6, 13, 31, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-dark);
}
.nav-logo {
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.5px;
  cursor: pointer;
  text-decoration: none;
}
.nav-logo span { color: var(--primary-light); }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: #fff; }
.nav-right { display: flex; gap: 12px; align-items: center; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  border: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 12px 28px;
}
.btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: 0 6px 24px rgba(22,119,255,0.35); }
.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.78);
  border: 1px solid rgba(255,255,255,0.22);
  padding: 12px 24px;
}
.btn-ghost:hover { background: rgba(255,255,255,0.07); }
.btn-lg { font-size: 16px; padding: 14px 36px; }
.btn-nav {
  background: transparent;
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  padding: 8px 16px;
}
.btn-nav:hover { color: #fff; }
.btn-nav-primary {
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  padding: 8px 18px;
}
.btn-nav-primary:hover { background: var(--primary-light); }

/* ─── Language switcher ─── */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 100px;
  padding: 3px;
  margin-left: 4px;
}
.lang-btn {
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  background: transparent;
  border: none;
  border-radius: 100px;
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-btn:hover { color: #fff; }
.lang-btn.active { background: var(--primary); color: #fff; }

/* ─── Footer ─── */
footer {
  background: #040810;
  padding: 40px 48px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-logo { color: #fff; font-size: 20px; font-weight: 900; }
.footer-logo span { color: var(--primary-light); }
.footer-tagline { color: rgba(255,255,255,0.28); font-size: 12px; margin-top: 4px; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,0.35); font-size: 13px; text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: rgba(255,255,255,0.7); }
.footer-copy { color: rgba(255,255,255,0.18); font-size: 12px; }

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .site-nav { padding: 0 24px; }
  .nav-links { display: none; }
  footer { padding: 32px 24px; }
  .footer-inner { flex-direction: column; text-align: center; }
}