.mo-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.98));
  border-bottom: 1px solid rgba(148, 163, 184, 0.28);
}

.mo-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
}

.mo-header-brand {
  display: flex;
  align-items: center;
}

.mo-header-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.mo-header-logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at 30% 0, var(--color-accent-neon), transparent 55%), radial-gradient(circle at 80% 80%, var(--color-accent-orange), transparent 55%), radial-gradient(circle at 10% 100%, var(--color-accent-violet), transparent 65%);
  box-shadow: var(--shadow-glow-neon);
}

.mo-header-logo-text {
  display: flex;
  flex-direction: column;
}

.mo-header-logo-title {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.mo-header-logo-subtitle {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.mo-header-nav {
  margin-left: auto;
}

.mo-header-nav-list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.mo-header-nav-link {
  position: relative;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.mo-header-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.3rem;
  height: 2px;
  border-radius: 999px;
  background-image: linear-gradient(90deg, var(--color-primary), var(--color-accent-violet));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.mo-header-nav-link:focus-visible,
.mo-header-nav-link:hover {
  color: var(--gray-50);
}

.mo-header-nav-link:hover::after,
.mo-header-nav-link:focus-visible::after {
  transform: scaleX(1);
}

.mo-header-cta {
  display: none;
}

.mo-header-download {
  font-size: 0.75rem;
  padding-inline: 1.1rem;
}

.mo-header-download-icon {
  font-size: 0.9rem;
}

.mo-header-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.2rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: rgba(15, 23, 42, 0.9);
  color: inherit;
}

.mo-header-toggle-bar {
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-100);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.mo-header-toggle:focus-visible {
  outline: 2px solid var(--color-accent-neon);
  outline-offset: 3px;
}

.mo-header-nav-open .mo-header-toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.mo-header-nav-open .mo-header-toggle-bar:nth-child(2) {
  opacity: 0;
}

.mo-header-nav-open .mo-header-toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

@media (max-width: 899px) {
  .mo-header-inner {
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
  }

  .mo-header-nav {
    position: fixed;
    inset: 3.5rem 0 auto 0;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), #020617);
    border-bottom: 1px solid rgba(31, 41, 55, 0.95);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

  .mo-header-nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.9rem var(--space-4) 1rem;
    gap: 0.9rem;
  }

  .mo-header-nav-link {
    font-size: 0.8rem;
  }

  .mo-header-nav-open .mo-header-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

@media (min-width: 900px) {
  .mo-header-toggle {
    display: none;
  }

  .mo-header-nav {
    position: static;
    inset: auto;
    background: transparent;
    border: none;
    transform: none;
    opacity: 1;
    visibility: visible;
    margin-left: var(--space-6);
  }

  .mo-header-cta {
    display: block;
    margin-left: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .mo-header-nav,
  .mo-header-toggle-bar {
    transition: none;
  }
}