.header {
  position: fixed;
  inset: 22px 0 auto;
  z-index: 50;
  padding: 0 24px;
  transition: inset 280ms ease, padding 280ms ease;
}

.shell {
  width: min(1390px, 100%);
  height: 88px;
  margin: 0 auto;
  padding: 0 28px 0 34px;
  display: grid;
  grid-template-columns: 220px 1fr auto;
  align-items: center;
  gap: 28px;
  border: 1px solid rgba(255, 255, 255, 0.44);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.77);
  box-shadow: 0 14px 44px rgba(4, 27, 33, 0.12);
  backdrop-filter: blur(18px) saturate(1.15);
  transition: height 280ms ease, border-radius 280ms ease, background 280ms ease, box-shadow 280ms ease;
}

.scrolled {
  inset: 10px 0 auto;
}

.scrolled .shell {
  height: 70px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.93);
  box-shadow: 0 10px 32px rgba(4, 27, 33, 0.13);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: 178px;
}

.brand img {
  width: 100%;
  height: auto;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.15vw, 36px);
}

.navItem {
  position: relative;
  display: flex;
  align-items: center;
}

.navItem > .navLink {
  border: 0;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}

.navItem:hover .submenu,
.navItem:focus-within .submenu,
.submenuOpen {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.chevronOpen {
  transform: rotate(180deg);
}

.navItem svg {
  transition: transform 180ms ease;
}

.submenu {
  position: absolute;
  top: calc(100% + 18px);
  left: -22px;
  width: 220px;
  padding: 9px;
  border: 1px solid rgba(10, 65, 74, 0.11);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 18px 45px rgba(4, 27, 33, 0.16);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.submenu::before {
  position: absolute;
  right: 0;
  bottom: 100%;
  left: 0;
  height: 18px;
  content: "";
}

.submenu a {
  min-height: 44px;
  padding: 0 13px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #26363e;
  font-size: 13px;
  font-weight: 700;
  transition: color 180ms ease, background 180ms ease;
}

.submenu a svg {
  flex: 0 0 auto;
}

.submenu a:hover,
.submenu a:focus-visible {
  color: var(--color-teal-900);
  background: rgba(85, 184, 190, 0.12);
}

.navLink {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #26363e;
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 180ms ease;
}

.navLink::after {
  position: absolute;
  right: 0;
  bottom: -10px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
  content: "";
  opacity: 0;
  transform: scaleX(0.5);
  transition: opacity 180ms ease, transform 180ms ease;
}

.navLink:hover,
.navLink:focus-visible {
  color: var(--color-teal-900);
}

.navLink:hover::after,
.navLink:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.resultsButton {
  min-height: 48px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 10px;
  color: white;
  background: var(--color-primary-strong);
  box-shadow: 0 10px 24px rgba(44, 166, 175, 0.22);
  font-size: 13.5px;
  font-weight: 700;
  white-space: nowrap;
  transition: background 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.resultsButton:hover,
.resultsButton:focus-visible {
  background: #278f98;
  box-shadow: 0 14px 28px rgba(44, 166, 175, 0.28);
  transform: translateY(-1px);
}

.menuButton,
.mobileResults,
.menuBackdrop {
  display: none;
}

@media (max-width: 1180px) {
  .shell {
    grid-template-columns: 180px 1fr auto;
    gap: 18px;
    padding-inline: 24px;
  }

  .brand {
    width: 155px;
  }

  .nav {
    gap: 16px;
  }

  .navLink {
    font-size: 12.5px;
  }

  .resultsButton {
    padding-inline: 15px;
    font-size: 12.5px;
  }
}

@media (max-width: 980px) {
  .header {
    inset: 14px 0 auto;
    padding: 0 14px;
  }

  .shell {
    position: relative;
    height: 70px;
    grid-template-columns: 1fr auto;
    padding: 0 18px;
  }

  .menuOpen .shell {
    border-color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 12px 34px rgba(4, 27, 33, 0.2);
  }

  .brand {
    width: 148px;
  }

  .shell > .resultsButton {
    display: none;
  }

  .menuButton {
    position: relative;
    z-index: 3;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 10px;
    display: inline-grid;
    place-items: center;
    color: var(--color-teal-900);
    background: rgba(85, 184, 190, 0.12);
    cursor: pointer;
  }

  .brand {
    position: relative;
    z-index: 3;
  }

  .menuBackdrop {
    position: fixed;
    inset: 0;
    z-index: 49;
    border: 0;
    display: block;
    background: rgba(3, 28, 34, 0.58);
    backdrop-filter: blur(4px);
    animation: backdropIn 180ms ease both;
  }

  .nav {
    position: fixed;
    top: 96px;
    right: auto;
    left: 50%;
    z-index: 2;
    width: calc(100vw - 28px);
    max-height: calc(100svh - 110px);
    padding: 12px 18px 18px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 3px;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    background: rgba(250, 252, 252, 0.99);
    box-shadow: 0 24px 70px rgba(3, 28, 34, 0.3);
    backdrop-filter: blur(24px);
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -10px) scale(0.985);
    transform-origin: top center;
    transition: opacity 200ms ease, transform 200ms ease;
  }

  .scrolled .nav {
    top: 88px;
  }

  .navOpen {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, 0) scale(1);
  }

  .navItem {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .navLink {
    width: 100%;
    min-height: 52px;
    padding: 0 8px;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-slate-200);
    font-size: 16px;
  }

  .submenu {
    position: static;
    width: 100%;
    max-height: 0;
    padding: 0 8px;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    overflow: hidden;
    pointer-events: none;
    transform: none;
    transition: max-height 200ms ease, padding 200ms ease;
  }

  .submenu::before {
    display: none;
  }

  .submenuOpen {
    max-height: 360px;
    padding-block: 6px;
    pointer-events: auto;
  }

  .submenu a {
    min-height: 44px;
    padding-left: 20px;
    border-left: 2px solid var(--color-primary);
    border-radius: 0 8px 8px 0;
    color: var(--color-teal-900);
    background: rgba(85, 184, 190, 0.08);
    font-size: 14px;
  }

  .mobileResults {
    width: 100%;
    min-height: 52px;
    margin-top: 12px;
    display: flex;
    font-size: 14px;
  }
}

@keyframes backdropIn {
  from { opacity: 0; }
}