.vq-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(5, 6, 8, 0.96), rgba(5, 6, 8, 0.85));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.vq-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  gap: var(--space-4);
}

.vq-header__brand {
  display: flex;
  align-items: center;
}

.vq-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.vq-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(201, 164, 109, 0.7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: radial-gradient(circle at 30% 0%, rgba(201, 164, 109, 0.55), transparent 70%),
              radial-gradient(circle at 80% 120%, rgba(23, 67, 143, 0.7), transparent 70%),
              #050608;
  box-shadow: var(--shadow-gold-glow);
}

.vq-header__logo-text {
  display: flex;
  flex-direction: column;
}

.vq-header__logo-title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.vq-header__logo-subtitle {
  font-size: var(--font-size-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.vq-header__nav {
  display: flex;
}

.vq-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.vq-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-block: 0.25rem;
}

.vq-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.25rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(to right, var(--color-primary), var(--color-accent-blue));
  transform-origin: center;
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.vq-header__nav-link:hover,
.vq-header__nav-link:focus-visible {
  color: var(--color-text);
}

.vq-header__nav-link:hover::after,
.vq-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.vq-header__nav-item--accent .vq-header__nav-link--cta {
  padding-inline: 1.25rem;
  padding-block: 0.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(201, 164, 109, 0.85);
  background: radial-gradient(circle at 0 0, rgba(201, 164, 109, 0.32), transparent 60%),
              radial-gradient(circle at 100% 120%, rgba(23, 67, 143, 0.5), transparent 60%),
              rgba(10, 12, 16, 0.9);
  color: var(--color-text);
}

.vq-header__nav-item--accent .vq-header__nav-link--cta::after {
  display: none;
}

.vq-header__nav-item--accent .vq-header__nav-link--cta:hover,
.vq-header__nav-item--accent .vq-header__nav-link--cta:focus-visible {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-blue));
  color: #050608;
  box-shadow: var(--shadow-gold-glow);
}

/* Mobile toggle */

.vq-header__toggle {
  position: relative;
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  align-items: center;
  justify-content: center;
  color: inherit;
}

.vq-header__toggle-bar {
  position: relative;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast), top var(--transition-fast), bottom var(--transition-fast);
}

.vq-header__toggle-bar + .vq-header__toggle-bar {
  margin-top: 5px;
}

.vq-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Mobile open state */

.vq-header--nav-open .vq-header__toggle-bar:first-child {
  transform: rotate(40deg);
  top: 3px;
}

.vq-header--nav-open .vq-header__toggle-bar:last-child {
  transform: rotate(-40deg);
  bottom: 3px;
}

/* Responsive layout */

@media (max-width: 900px) {
  .vq-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .vq-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    transform-origin: top;
    transform: scaleY(0.98);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
  }

  .vq-header__nav-list {
    width: 100%;
    margin-top: 0.25rem;
    margin-bottom: 0.75rem;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4) var(--layout-gutter) var(--space-4);
    background: radial-gradient(circle at 0 0, rgba(201, 164, 109, 0.25), transparent 70%),
                radial-gradient(circle at 100% 120%, rgba(23, 67, 143, 0.4), transparent 70%),
                rgba(5, 6, 8, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-soft);
  }

  .vq-header__nav-item {
    width: 100%;
  }

  .vq-header__nav-link,
  .vq-header__nav-item--accent .vq-header__nav-link--cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .vq-header__nav-link::after {
    display: none;
  }

  .vq-header--nav-open .vq-header__nav {
    opacity: 1;
    transform: scaleY(1);
    pointer-events: auto;
  }
}

@media (max-width: 600px) {
  .vq-header__logo-subtitle {
    display: none;
  }
}