/* Site header shared by every page except the homepage (which inlines the same look).
   Resets guard against older per-page `nav {}` / `nav a {}` rules. */
.vnav {
  all: unset;
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  box-sizing: border-box;
  width: 100%;
  padding: 0.65rem max(1.25rem, env(safe-area-inset-right)) 0.65rem max(1.25rem, env(safe-area-inset-left));
  background: rgba(250, 251, 254, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(13, 20, 38, 0.04);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: transform 0.3s ease;
  will-change: transform;
}
.vnav.is-hidden { transform: translateY(-100%); }

.vnav .vnav-brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
  color: #0d1426;
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.vnav .vnav-brand:hover { text-decoration: none; opacity: 1; }
.vnav .vnav-logo {
  display: block;
  width: 2.75rem;
  height: 2.75rem;
  margin: 0;
  object-fit: contain;
}

.vnav .vnav-links {
  all: unset;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
}
.vnav .vnav-link {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  background: transparent;
  color: rgba(13, 20, 38, 0.62);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: normal;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}
.vnav .vnav-link:hover,
.vnav .vnav-link:focus-visible {
  color: #0d1426;
  background: rgba(13, 20, 38, 0.05);
  text-decoration: none;
  outline: none;
}
.vnav .vnav-link[aria-current="page"] {
  color: #0d1426;
  background: rgba(13, 20, 38, 0.06);
}

/* Founding banner scrolls away so it never covers the header. */
.founding-banner { position: relative; }

@media (max-width: 640px) {
  .vnav {
    gap: 0.25rem;
    padding: 0.35rem max(0.5rem, env(safe-area-inset-right)) 0.35rem max(0.75rem, env(safe-area-inset-left));
  }
  /* Wordmark hidden on phones so the tabs fit on one row; aria-label keeps the link named. */
  .vnav .vnav-brand { font-size: 0; gap: 0; }
  .vnav .vnav-logo { width: 2.1rem; height: 2.1rem; }
  .vnav .vnav-links { gap: 0; }
  .vnav .vnav-link { font-size: 0.84rem; padding: 0.55rem 0.5rem; }
}
@media (max-width: 360px) {
  .vnav .vnav-link { font-size: 0.78rem; padding: 0.5rem 0.38rem; }
}
@media (prefers-reduced-motion: reduce) {
  .vnav, .vnav .vnav-link { transition: none; }
}