/* Header  icy glass */
.site-header {
  position: sticky;
  top: 0;
  z-index: 110;
  height: var(--pw-header-h);
  isolation: isolate;
  background: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.42);
  box-shadow: var(--pw-shadow-ice);
  transition: box-shadow var(--pw-transition), border-color var(--pw-transition);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--pw-header-glass);
  backdrop-filter: blur(22px) saturate(1.35);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
  z-index: -2;
}

.site-header::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.55;
  background-image:
    var(--pw-header-ice-texture),
    radial-gradient(circle at 12% 50%, rgba(255, 255, 255, 0.45) 0%, transparent 22%),
    radial-gradient(circle at 88% 30%, rgba(255, 255, 255, 0.35) 0%, transparent 18%),
    radial-gradient(circle at 55% 80%, rgba(0, 194, 203, 0.2) 0%, transparent 25%);
  background-size: 180px 180px, 100% 100%, 100% 100%, 100% 100%;
  background-position: 0 0, 0 0, 0 0, 0 0;
}

.site-header.is-scrolled {
  border-bottom-color: rgba(255, 255, 255, 0.55);
  box-shadow: 0 10px 36px rgba(0, 136, 204, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

.site-header.is-scrolled::before {
  background: var(--pw-header-glass-scrolled);
  backdrop-filter: blur(26px) saturate(1.4);
  -webkit-backdrop-filter: blur(26px) saturate(1.4);
}

.site-header.is-scrolled::after {
  opacity: 0.65;
}

.header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--pw-space-lg);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--pw-space-sm);
  flex-shrink: 0;
}

.brand-link img,
.brand-link svg {
  height: 36px;
  width: auto;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: var(--pw-space-xs);
}

.nav-desktop a {
  padding: var(--pw-space-sm) var(--pw-space-md);
  color: var(--pw-deep-ocean);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--pw-radius-pill);
  border: 1px solid transparent;
  transition: background var(--pw-transition), color var(--pw-transition), border-color var(--pw-transition), box-shadow var(--pw-transition);
}

.nav-desktop a:hover,
.nav-desktop a.is-active {
  background: rgba(255, 255, 255, 0.45);
  color: var(--pw-crystal-blue);
  border-color: rgba(255, 255, 255, 0.7);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 2px 8px rgba(0, 136, 204, 0.1);
}

.header-cta {
  display: none;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--pw-radius-soft);
  background: rgba(255, 255, 255, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--pw-transition), border-color var(--pw-transition);
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.55);
  border-color: rgba(255, 255, 255, 0.8);
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--pw-deep-ocean);
  border-radius: 2px;
  transition: transform var(--pw-transition), opacity var(--pw-transition);
}

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

.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

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

.nav-mobile {
  position: fixed;
  top: var(--pw-header-h);
  left: 0;
  right: 0;
  bottom: 0;
  isolation: isolate;
  background: linear-gradient(
    165deg,
    rgba(0, 194, 203, 0.32) 0%,
    rgba(0, 136, 204, 0.2) 40%,
    rgba(224, 242, 254, 0.42) 100%
  );
  backdrop-filter: blur(28px) saturate(1.25);
  -webkit-backdrop-filter: blur(28px) saturate(1.25);
  padding: var(--pw-space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--pw-space-sm);
  z-index: 105;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--pw-transition), visibility var(--pw-transition);
}

.nav-mobile::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image: var(--pw-header-ice-texture);
  background-size: 200px 200px;
}

.nav-mobile.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-mobile a {
  position: relative;
  z-index: 1;
  display: block;
  padding: var(--pw-space-md) var(--pw-space-lg);
  color: var(--pw-deep-ocean);
  font-weight: 600;
  font-size: 1.0625rem;
  border-radius: var(--pw-radius-fluid);
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

.nav-mobile a:hover,
.nav-mobile a.is-active {
  background: rgba(255, 255, 255, 0.62);
  color: var(--pw-crystal-blue);
  border-color: rgba(255, 255, 255, 0.9);
}

.nav-mobile .btn-primary {
  margin-top: var(--pw-space-lg);
  width: 100%;
  border: none;
}

/* Mobile menu backdrop */
body.menu-open::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(26, 54, 93, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  pointer-events: none;
}

@media (min-width: 960px) {
  .nav-desktop {
    display: flex;
  }

  .header-cta {
    display: inline-flex;
  }

  .menu-toggle {
    display: none;
  }

  .nav-mobile {
    display: none !important;
  }
}