/*
  Purpose: BDNA.one shared brand — logo, nav, tokens (matches bdna.one)
  Last modified: 2026-06-27 | Completeness: 98/100
*/

:root {
  --bdna-primary: #6336f9;
  --bdna-primary-hover: #5428e8;
  --bdna-teal: #3d9ab5;
  --bdna-navy: #050a1f;
  --bdna-navy-mid: #0c1229;
  --bdna-bg: #ffffff;
  --bdna-bg-soft: #f9fafb;
  --bdna-surface: #ffffff;
  --bdna-text: #0f172a;
  --bdna-muted: #6b7280;
  --bdna-border: #eceef2;
  --bdna-soft: #f3f0ff;
  --bdna-gradient: linear-gradient(
    105deg,
    #6336f9 0%,
    #7c4dff 28%,
    #3d9ab5 52%,
    #6336f9 100%
  );
  --bdna-font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --bdna-radius: 0.75rem;
  --bdna-nav-h: 3.75rem;
}

/* --- Logo + wordmark (bdna.one) --- */
.bdna-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: inherit;
}

.bdna-logo__mark {
  width: 2.35rem;
  height: auto;
  flex-shrink: 0;
  display: block;
}

.bdna-wordmark {
  font-family: var(--bdna-font);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  background: var(--bdna-gradient);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bdna-wordmark-tld {
  font-weight: 600;
}

/* Short alias — footer, meta */
.bdna-alias {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--bdna-muted);
  letter-spacing: -0.01em;
}

.bdna-alias::before {
  content: "·";
  margin: 0 0.35rem;
  opacity: 0.5;
}

@media (prefers-reduced-motion: no-preference) {
  .bdna-wordmark {
    animation: bdna-wordmark-shift 8s ease-in-out infinite;
  }
}

@keyframes bdna-wordmark-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* --- Site nav --- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 10, 31, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--bdna-nav-h);
  gap: 1rem;
}

.site-nav .bdna-wordmark {
  color: #fff;
  background: none;
  -webkit-background-clip: unset;
  background-clip: unset;
  animation: none;
}

.site-nav .bdna-logo {
  flex-wrap: wrap;
  row-gap: 0;
}

.site-nav--teaser {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: transparent;
  border-bottom: none;
  backdrop-filter: none;
}

.site-nav .bdna-alias {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.75rem;
}

@media (max-width: 520px) {
  .site-nav .bdna-alias {
    display: none;
  }
}

.site-nav__badge {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.site-nav__link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}

.site-nav__link:hover {
  color: #fff;
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.site-nav__login {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.32);
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-nav__login:hover {
  color: rgba(255, 255, 255, 0.58);
}

.site-nav__login:focus-visible {
  outline: 1px solid rgba(255, 255, 255, 0.35);
  outline-offset: 3px;
  border-radius: 2px;
}