.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;

  z-index: 999;

  background: transparent;
  box-shadow: none;
  border: none;

  transition: none;
}


.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-8);
}

.header-shell {
  width: 85%;

  max-width: 1200px;

  margin: auto;
  margin-top: 24px;

  border-radius: 999px;
  background: #fff;

  box-shadow: 0 10px 30px rgba(0, 0, 0, .08);

  transition:
    width .8s cubic-bezier(.22, 1, .36, 1),
    border-radius .8s cubic-bezier(.22, 1, .36, 1),
    margin-top .8s cubic-bezier(.22, 1, .36, 1),
    box-shadow .8s cubic-bezier(.22, 1, .36, 1);

  backdrop-filter: blur(16px);

  border-radius: 999px;

  box-shadow:
    0 10px 30px rgba(0, 0, 0, .08);

  border:
    1px solid rgba(255, 255, 255, .6);

  transition:
    all .7s cubic-bezier(.22, 1, .36, 1);
}

.site-header.scrolled .header-shell {

  width: 100%;

  margin-top: 0;

  border-radius: 0;

  background: #fff;

  border-bottom:
    1px solid rgba(0, 0, 0, .06);

  box-shadow:
    0 4px 20px rgba(0, 0, 0, .05);
}

.header-shell,
.site-logo,
#header-cta {

  will-change: transform;

  transform: translateZ(0);

  backface-visibility: hidden;
}

/* ── Logo ─────────────────────────────────────────────────── */
.site-logo {
  transition:
    transform .5s ease;
}

#header-cta {
  transition:
    all .5s ease;
}

.header-inner {
  transition:
    height .5s ease;
}

.site-logo {
  flex-shrink: 0;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-logo__img {
  height: 36px;
  width: auto;
  display: block;
  object-fit: contain;
}

.site-logo__mark {
  width: 36px;
  height: 36px;
  background-color: var(--color-royal-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-header.scrolled .site-logo {
  transform: none;
}

.site-logo__mark span {
  font-family: var(--font-brand);
  font-weight: var(--weight-black);
  font-size: var(--text-md);
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.site-logo__wordmark {
  font-family: var(--font-brand);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  color: var(--color-dark);
  letter-spacing: -0.02em;
  line-height: 1;
}

.site-logo__wordmark strong {
  color: var(--color-royal-blue);
  font-weight: var(--weight-black);
}

/* ── Primary Nav ──────────────────────────────────────────── */
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.primary-nav__item {
  position: relative;
}

.primary-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
  white-space: nowrap;
}

.primary-nav__link:hover,
.primary-nav__link.active {
  color: var(--color-royal-blue);
  background-color: var(--color-blue-50);
}


.primary-nav__link .chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-base);
}

.primary-nav__item:hover .chevron {
  transform: rotate(180deg);
}

/* ── Dropdown ─────────────────────────────────────────────── */
.dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 100%;
  transform: translateX(-50%);
  min-width: 300px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base),
    translate var(--transition-base),
    visibility var(--transition-base);
  transition-delay: 150ms;
  transform-origin: top center;
  translate: -50% var(--space-2);
}

.dropdown::before {
  content: '';
  position: absolute;
  top: -24px;
  left: 0;
  right: 0;
  height: 24px;
  background-color: transparent;
}

.primary-nav__item:hover .dropdown,
.primary-nav__item:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
  translate: -50%;
  transition-delay: 0s;
}

.dropdown__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.dropdown__link:hover {
  color: var(--color-royal-blue);
  background-color: var(--color-blue-50);
}

.dropdown__link .icon {
  width: 32px;
  height: 32px;
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

/* ── Header CTA ───────────────────────────────────────────── */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}


/* ── Mobile Toggle ────────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
  background-color: var(--color-surface);
}

.nav-toggle__bar {
  width: 22px;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
  transform-origin: center;
}

.nav-toggle.open .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu ──────────────────────────────────────────── */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  overflow-y: auto;
  z-index: var(--z-sticky);
  padding: var(--space-6) var(--container-pad) var(--space-12);
  transform: translateX(100%);
  transition: transform var(--transition-slower);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  color: var(--color-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__sub {
  padding-left: var(--space-4);
}

.mobile-nav__sub-link {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-secondary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__sub-link:hover {
  color: var(--color-royal-blue);
}

/* ── Page Offset ──────────────────────────────────────────── */
.page-body {
  padding-top: 72px;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {

  .primary-nav,
  .header-actions .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }
}

/* ── Nested Submenu (Flyout & Mobile) ───────────────────────── */

/* Desktop Submenu (Flyout to the right of parent link) */
@media (min-width: 1025px) {
  .dropdown__item--has-submenu {
    position: relative;
  }

  .submenu {
    position: absolute;
    top: -40px;
    left: 100%;
    translate: var(--space-2) 0;
    min-width: 650px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-6);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity var(--transition-base),
      transform var(--transition-base),
      translate var(--transition-base),
      visibility var(--transition-base);
    transition-delay: 150ms;
    display: flex;
    gap: var(--space-6);
  }

  /* Bridge for hovering from dropdown item to submenu */
  .submenu::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: -20px;
    width: 20px;
    background-color: transparent;
  }

  .dropdown__item--has-submenu:hover .submenu,
  .dropdown__item--has-submenu:focus-within .submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
    translate: 0 0;
    transition-delay: 0s;
  }

  .submenu__col {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 200px;
  }

  .submenu__heading {
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
    color: var(--color-dark);
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-1);
    display: flex;
    align-items: center;
    transition:
      color var(--transition-fast),
      background-color var(--transition-fast);
  }

  .submenu__heading:hover {
    color: var(--color-royal-blue);
    background-color: var(--color-blue-50);
  }

  .submenu__link {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    color: var(--color-secondary);
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    display: block;
    transition:
      color var(--transition-fast),
      background-color var(--transition-fast);
  }

  .submenu__link:hover {
    color: var(--color-royal-blue);
    background-color: var(--color-blue-50);
  }

  /* Rotate chevron-right on parent hover */
  .dropdown__item--has-submenu:hover .chevron-right {
    transform: rotate(90deg);
  }

  .chevron-right {
    transition: transform var(--transition-base);
  }
}

/* Mobile Submenu (Nested accordion/lists) */
@media (max-width: 1024px) {
  .submenu {
    display: none;
  }

  .mobile-nav__sub-sub {
    padding-left: var(--space-4);
    border-left: 1px solid var(--color-border);
    margin-left: var(--space-2);
    margin-top: var(--space-2);
    margin-bottom: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }

  .mobile-nav__sub-sub-heading {
    display: block;
    padding: var(--space-1) 0;
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
    color: var(--color-dark);
    text-decoration: none;
    margin-top: var(--space-2);
  }

  .mobile-nav__sub-sub-link {
    display: block;
    padding: var(--space-1) 0;
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    color: var(--color-secondary);
    text-decoration: none;
    padding-left: var(--space-2);
  }

  .mobile-nav__sub-sub-link:hover,
  .mobile-nav__sub-sub-heading:hover {
    color: var(--color-royal-blue);
  }
}