/* Header — brand + socials */

.hub-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(6, 6, 10, 0.85);
  backdrop-filter: blur(20px);
}

.hub-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.hub-brand {
  text-decoration: none;
  color: inherit;
  display: inline-flex;
  flex-direction: column;
  gap: 0;
  line-height: 1.2;
}

.hub-brand:hover {
  color: var(--hub-text);
}

.hub-brand-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--hub-text), var(--hub-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hub-brand-tagline {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--hub-text-3);
}

.hub-socials {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.hub-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--hub-border);
  background: var(--hub-surface);
  color: var(--hub-text);
  border-radius: var(--hub-radius-sm);
  text-decoration: none;
  transition: background 150ms ease, border-color 150ms ease, transform 120ms ease, box-shadow 150ms ease;
}

.hub-social-link:hover {
  background: var(--hub-surface-2);
  border-color: rgba(139, 92, 246, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -6px var(--hub-accent-glow);
}

.hub-social-link:focus-visible {
  outline: 2px solid var(--hub-accent);
  outline-offset: 2px;
}

.hub-social-link .iconify {
  font-size: 20px;
  color: var(--hub-accent-2);
}