.hv-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
}

.hv-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

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

.hv-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-neutral-900);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: var(--text-sm);
}

.hv-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: radial-gradient(circle at 30% 20%, var(--color-primary-soft), transparent 55%),
              radial-gradient(circle at 80% 80%, #f4d8bd, transparent 55%),
              linear-gradient(135deg, var(--color-primary-strong), var(--color-primary));
  box-shadow: var(--shadow-md);
}

.hv-header__logo-text {
  font-family: var(--font-sans);
}

.hv-header__nav {
  position: relative;
}

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

.hv-header__nav-item {
  list-style: none;
}

.hv-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0;
  font-size: var(--text-sm);
  color: var(--color-neutral-800);
}

.hv-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 999px;
  transition: width var(--transition-base);
}

.hv-header__nav-link:hover::after,
.hv-header__nav-link:focus-visible::after {
  width: 100%;
}

.hv-header__nav-item--highlight .hv-header__nav-link {
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-primary-soft);
  background-color: var(--color-primary-soft);
}

.hv-header__nav-item--highlight .hv-header__nav-link::after {
  display: none;
}

.hv-header__nav-link--cta {
  color: var(--color-primary-strong);
  font-weight: 500;
}

.hv-header__nav-item--highlight .hv-header__nav-link:hover {
  background-color: #f4d6c2;
}

.hv-header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hv-header__icon-link {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border-subtle);
  color: var(--color-neutral-700);
  background-color: var(--color-surface);
  transition: background-color var(--transition-base),
              color var(--transition-base),
              box-shadow var(--transition-fast),
              transform var(--transition-fast);
}

.hv-header__icon-link:hover,
.hv-header__icon-link:focus-visible {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.hv-header__icon-link i {
  font-size: 0.95rem;
}

/* Mobile toggle */
.hv-header__toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  align-items: center;
  justify-content: center;
}

.hv-header__toggle-icon,
.hv-header__toggle-icon::before,
.hv-header__toggle-icon::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-neutral-800);
  position: relative;
  transition: transform var(--transition-base),
              opacity var(--transition-fast),
              top var(--transition-fast),
              bottom var(--transition-fast);
}

.hv-header__toggle-icon::before,
.hv-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.hv-header__toggle-icon::before {
  top: -5px;
}

.hv-header__toggle-icon::after {
  bottom: -5px;
}

.hv-header__toggle[aria-expanded="true"] .hv-header__toggle-icon {
  background-color: transparent;
}

.hv-header__toggle[aria-expanded="true"] .hv-header__toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.hv-header__toggle[aria-expanded="true"] .hv-header__toggle-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 768px) {
  .hv-header__inner {
    gap: var(--space-2);
  }

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

  .hv-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-md);
    transform-origin: top;
  }

  .hv-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4) var(--space-4);
    gap: var(--space-3);
  }

  .hv-header__nav-link {
    font-size: var(--text-base);
  }

  .hv-header__nav-item--highlight .hv-header__nav-link {
    width: 100%;
    justify-content: center;
  }

  .hv-header__nav {
    display: none;
  }

  .hv-header__nav--open {
    display: block;
  }

  .hv-header__actions {
    gap: 0.4rem;
  }
}

/* Reduced motion: avoid big transitions for menu */
@media (prefers-reduced-motion: reduce) {
  .hv-header__toggle-icon,
  .hv-header__toggle-icon::before,
  .hv-header__toggle-icon::after,
  .hv-header__nav {
    transition: none;
  }
}