/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.brand__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2.5px solid var(--color-steel);
  border-radius: var(--radius-md);
  padding: 0.3rem 0.65rem;
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-wide);
  color: var(--color-navy);
  line-height: 1;
}

.brand__tagline {
  display: none;
  font-style: italic;
  font-size: var(--text-xs);
  color: var(--color-navy-light);
  font-weight: var(--weight-medium);
}

@media (min-width: 720px) {
  .brand__tagline {
    display: block;
  }
}

.main-nav {
  display: none;
  align-items: center;
  gap: var(--space-4);
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.main-nav__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-gray-800);
  position: relative;
  padding-block: var(--space-1);
  transition: color var(--duration-base) var(--ease-out-expo);
}

.main-nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--color-navy-light);
  transition: right var(--duration-base) var(--ease-out-expo);
}

.main-nav__link:hover,
.main-nav__link[aria-current='page'] {
  color: var(--color-navy);
}

.main-nav__link:hover::after,
.main-nav__link[aria-current='page']::after {
  right: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-1);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-navy-darker);
  transition: transform var(--duration-base) var(--ease-out-expo), opacity var(--duration-base) var(--ease-out-expo);
}

.nav-toggle[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded='true'] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 960px) {
  .main-nav {
    display: flex;
  }
  .nav-toggle {
    display: none;
  }
}

.mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: var(--color-white);
  z-index: 99;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out-expo);
  overflow-y: auto;
}

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

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav__link {
  display: block;
  padding: var(--space-2) 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  text-transform: uppercase;
  letter-spacing: var(--tracking-tight);
  color: var(--color-navy-darker);
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 960px) {
  .mobile-nav {
    display: none;
  }
}

/* Sections */
.section {
  padding-block: var(--space-6);
}

.section--tight {
  padding-block: var(--space-5);
}

.section--navy {
  background: var(--color-navy-darker);
  color: var(--color-white);
}

.section--navy h2,
.section--navy h3 {
  color: var(--color-white);
}

.section--navy p {
  color: rgba(255, 255, 255, 0.72);
}

.section--surface {
  background: var(--color-surface);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-4);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-navy-light);
  margin-bottom: var(--space-1);
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-navy-light);
}

/* Footer */
.site-footer {
  background: var(--color-navy-darker);
  color: rgba(255, 255, 255, 0.7);
  padding-block: var(--space-6) var(--space-4);
}

.footer-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: var(--space-4);
  }
}

.footer-brand__badge {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--color-white);
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-list a {
  transition: color var(--duration-base) var(--ease-out-expo);
}

.footer-list a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

@media (min-width: 720px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.social-links {
  display: flex;
  gap: var(--space-2);
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: border-color var(--duration-base) var(--ease-out-expo), background var(--duration-base) var(--ease-out-expo);
}

.social-links a:hover {
  border-color: var(--color-navy-light);
  background: rgba(75, 120, 196, 0.15);
}