/* Stacked “mini hero”: brand centered, links below; mobile = wrap, no hamburger */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  /* Height follows content only — avoids empty band reserved for a second link row */
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(228, 223, 240, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 0;
  /* Balanced vertical rhythm; safe-area on top for notched phones */
  padding: calc(env(safe-area-inset-top, 0px) + 22px) 32px 22px;
  box-sizing: border-box;
}

/* Width follows the logo pill; tagline stays within that width. */
.nav-brand {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  flex-shrink: 0;
  width: fit-content;
  max-width: 100%;
}
.nav-brand > .nav-logo {
  align-self: center;
}

.nav-tagline {
  margin: 0;
  padding: 0;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.055em;
  text-transform: uppercase;
  color: rgba(26, 21, 40, 0.88);
  line-height: 1.35;
  text-align: center;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.03em;
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  position: relative;
  isolation: isolate;
  padding: 6px 18px 7px;
  border-radius: 999px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.nav-logo::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  z-index: 0;
  background:
    radial-gradient(1.2px 1.2px at 12% 28%, rgba(255, 255, 255, 0.95) 50%, transparent 52%),
    radial-gradient(1px 1px at 84% 22%, rgba(186, 230, 253, 0.9) 50%, transparent 52%),
    radial-gradient(1.6px 1.6px at 68% 72%, rgba(255, 255, 255, 0.88) 50%, transparent 52%),
    radial-gradient(1px 1px at 38% 76%, rgba(224, 231, 255, 0.75) 50%, transparent 52%),
    radial-gradient(1px 1px at 94% 48%, rgba(255, 255, 255, 0.65) 50%, transparent 52%),
    radial-gradient(1px 1px at 52% 38%, rgba(165, 243, 252, 0.8) 50%, transparent 52%),
    radial-gradient(1.2px 1.2px at 6% 58%, rgba(255, 255, 255, 0.55) 50%, transparent 52%),
    radial-gradient(1px 1px at 56% 14%, rgba(255, 255, 255, 0.5) 50%, transparent 52%),
    radial-gradient(1px 1px at 28% 12%, rgba(199, 210, 254, 0.65) 50%, transparent 52%),
    radial-gradient(1px 1px at 76% 88%, rgba(255, 255, 255, 0.45) 50%, transparent 52%),
    linear-gradient(158deg, #050f1c 0%, #0c2744 32%, #153959 58%, #1e4a72 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 2px 14px rgba(8, 30, 60, 0.4);
  animation: logo-space-twinkle 5.5s ease-in-out infinite;
}
.nav-logo .logo-az,
.nav-logo .logo-tronomic,
.nav-logo .logo-life {
  position: relative;
  z-index: 1;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 100%;
  animation: logo-gradient-drift 9s ease-in-out infinite;
}
.nav-logo .logo-az {
  background-image: var(--gradient-logo-space-az);
  font-weight: 800;
}
.nav-logo .logo-tronomic {
  background-image: var(--gradient-logo-space-tronomic);
  font-weight: 700;
  letter-spacing: 0.018em;
  animation-delay: -2.5s;
}
.nav-logo .logo-life {
  background-image: var(--gradient-logo-space-tronomic);
  font-weight: 700;
  letter-spacing: 0.04em;
  animation-delay: -4.5s;
}
.nav-logo:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 24px rgba(56, 189, 248, 0.25);
}
.nav-logo:hover::before {
  filter: brightness(1.08);
}

.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px 10px;
  width: 100%;
  max-width: 42rem;
  margin: 12px 0 0;
  padding: 0;
  box-sizing: border-box;
}
.nav-links a {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 500;
  color: #6b6280;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 999px;
  transition: color var(--ease), background var(--ease);
}
.nav-links a:hover {
  color: var(--socio);
  background: var(--socio-pale);
}
.nav-links a.active {
  color: var(--socio);
  font-weight: 600;
  background: rgba(237, 233, 254, 0.9);
}

/* Hamburger removed — links always visible (wrap on narrow viewports) */
.nav-toggle {
  display: none !important;
}

@media (max-width: 768px) {
  .site-nav {
    padding: calc(env(safe-area-inset-top, 0px) + 20px) 16px 20px;
  }
  .nav-tagline {
    font-size: 0.68rem;
    letter-spacing: 0.05em;
  }
  .nav-links {
    gap: 6px 8px;
    max-width: 100%;
  }
  .nav-links a {
    padding: 8px 12px;
    font-size: 0.92rem;
  }
}