.vsh-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(5, 6, 8, 0.96), rgba(5, 6, 8, 0.92));
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.vsh-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  gap: var(--space-10);
}

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

.vsh-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  color: var(--color-text);
}

.vsh-header__logo-mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 20% 0%, rgba(244, 212, 114, 0.9), rgba(212, 175, 55, 0.1));
  color: #050608;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.18em;
  font-size: 0.9rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
}

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

.vsh-header__logo-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.vsh-header__logo-tagline {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.vsh-header__nav {
  margin-left: auto;
}

.vsh-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-10);
}

.vsh-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.vsh-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.3rem;
  height: 2px;
  transform: scaleX(0);
  transform-origin: center;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: transform var(--transition-medium);
}

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

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

.vsh-header__nav-item--cta {
  margin-left: var(--space-4);
}

.vsh-header__cta {
  font-size: 0.72rem;
}

/* Mobile toggle */
.vsh-header__toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(5, 6, 8, 0.9);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.3rem;
  cursor: pointer;
}

.vsh-header__toggle-bar {
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

.vsh-header__toggle.is-active .vsh-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.vsh-header__toggle.is-active .vsh-header__toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.vsh-header__toggle.is-active .vsh-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 768px) {
  .vsh-header__inner {
    padding-top: var(--space-6);
    padding-bottom: var(--space-6);
  }

  .vsh-header__toggle {
    display: inline-flex;
  }

  .vsh-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 0;
    padding-top: 4.25rem;
    background: radial-gradient(circle at top, rgba(14, 124, 91, 0.16), transparent 55%),
                radial-gradient(circle at bottom, rgba(100, 27, 48, 0.3), transparent 60%),
                rgba(5, 6, 8, 0.98);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-medium), opacity var(--transition-medium), visibility var(--transition-medium);
  }

  .vsh-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
    padding: var(--space-16);
  }

  .vsh-header__nav-item--cta {
    width: 100%;
    margin-left: 0;
    margin-top: var(--space-4);
  }

  .vsh-header__nav-item--cta .btn {
    width: 100%;
    justify-content: center;
  }

  .vsh-header__nav-link {
    font-size: var(--font-size-md);
  }

  .vsh-header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* Medium+ screens */
@media (min-width: 769px) {
  .vsh-header__nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    padding: 0;
    background: transparent;
  }
}

/* Utility when menu is open */
.vsh-header--menu-open {
  overflow: hidden;
}