/* Top bar */
.topbar {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.85rem;
  min-height: var(--topbar-height);
}

.topbar a {
  color: inherit;
}

.topbar a:hover {
  color: #fff;
}

.topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding: 0.55rem 0;
}

.topbar__item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
}

.topbar__icon {
  display: inline-flex;
  opacity: 0.85;
}

.topbar__item--social {
  gap: 1rem;
}

.topbar__social {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
}

/* Sticky header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(16, 45, 94, 0.08);
  border-bottom-color: var(--color-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-height);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  color: var(--color-ink);
}

.brand:hover {
  color: var(--color-navy);
}

.brand__eyebrow {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-teal);
  font-weight: 600;
}

.brand__name {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem 1.35rem;
}

.site-nav__link {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink);
  padding: 0.35rem 0;
  position: relative;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-accent-dark);
}

.site-nav__link.is-active::after,
.site-nav__link:hover::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  padding: 10px;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.78);
  padding-top: 4.5rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.82);
}

.site-footer a:hover {
  color: #fff;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.site-footer__eyebrow {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

.site-footer__title {
  color: #fff;
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.site-footer__text {
  max-width: 28rem;
  margin: 0;
}

.site-footer__heading {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.site-footer__links {
  display: grid;
  gap: 0.55rem;
}

.site-footer__cta {
  margin-top: 1.25rem;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer__bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1.25rem;
  padding: 1.1rem 0;
  font-size: 0.9rem;
}

.site-footer__bottom p {
  margin: 0;
}

.site-footer__credit a {
  color: #fff;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer__credit a:hover {
  color: var(--color-accent);
}

@media (max-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-block;
    z-index: 120;
  }

  .site-nav {
    position: fixed;
    inset: calc(var(--topbar-height) + var(--header-height) - 1px) 0 0 0;
    background: #fff;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 1.5rem;
    gap: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: block;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-line);
    font-size: 0.95rem;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__cta {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 767px) {
  .topbar__inner {
    justify-content: center;
    text-align: center;
  }

  .topbar__item {
    justify-content: center;
  }

  .brand__name {
    font-size: 1.25rem;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}