/* ============ Site Header ============ */
/* Audit fix: nav must be a VISIBLE persistent top-tier bar on desktop ,
   never hidden behind a hamburger. Hamburger only appears below --bp-nav. */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  box-shadow: var(--shadow-header);
  transition: box-shadow var(--transition-base);
}

/* The frosted-glass background lives on a pseudo-element rather than
   directly on .site-header. backdrop-filter (like transform/filter)
   makes an element a containing block for position:fixed descendants ,
   with it on .site-header directly, the fixed mobile .primary-nav
   panel would resolve its fixed positioning against the 84px header
   bar instead of the viewport and collapse to nothing visible. */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  transition: background var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(20, 40, 60, 0.08);
}

.header-inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.brand svg {
  height: 42px;
  width: auto;
}

.brand-word {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--color-blue);
}

.brand-tag {
  display: block;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: -2px;
}

/* Primary nav , visible bar */
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-list > li {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-charcoal);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link[aria-expanded="true"] {
  color: var(--color-blue);
  background: var(--color-bg-alt);
}

.nav-link .chev {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.nav-link[aria-expanded="true"] .chev {
  transform: rotate(180deg);
}

.nav-item.current > .nav-link {
  color: var(--color-blue);
}

/* Dropdown panel */
.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 300px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(20, 40, 60, 0.14);
  padding: 0.6rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.nav-item.has-dropdown:hover .dropdown,
.nav-item.has-dropdown:focus-within .dropdown,
.dropdown.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius);
  color: var(--color-charcoal);
  font-weight: 600;
  font-size: 0.9rem;
}

.dropdown a small {
  font-weight: 500;
  font-size: 0.76rem;
  color: var(--color-text-muted);
}

.dropdown a:hover {
  background: var(--color-bg-alt);
  color: var(--color-blue);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 20px;
  margin-inline: auto;
  background: var(--color-charcoal);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.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);
}

/* Donate as a mobile-menu link: hidden on desktop (it's already the
   header CTA button there), shown only inside the slide-out panel. */
.nav-item-donate {
  display: none;
}

@media (max-width: 960px) {
  /* Swift, snappy panel motion , quicker and punchier than the site's
     general transition timing, since this is a direct-manipulation UI
     element (should feel instantaneous, not decorative). */
  .primary-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-lg);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-list > li {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link {
    padding: 0.9rem 0.25rem;
    justify-content: space-between;
    width: 100%;
    transition: color 150ms ease;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    display: none;
    padding: 0 0 0.5rem 0.75rem;
  }

  .dropdown.is-open {
    display: flex;
    flex-direction: column;
  }

  .nav-toggle {
    display: flex;
  }

  /* Donate button removed from the header bar on mobile , only the logo
     and hamburger remain; Donate lives in the menu instead. */
  .header-cta > .btn-cta {
    display: none;
  }

  .nav-item-donate {
    display: block;
    margin-top: var(--space-sm);
    border-bottom: none;
  }

  .nav-item-donate .nav-link {
    background: var(--color-gold);
    color: #fff;
    font-weight: 700;
    border-radius: var(--radius);
    justify-content: center;
    padding: 0.85rem 1rem;
  }

  .nav-item-donate .nav-link:hover {
    background: var(--color-gold-dark);
    color: #fff;
  }
}

/* ============ Footer ============ */
.site-footer {
  background: var(--color-blue-darker);
  color: rgba(255, 255, 255, 0.85);
  padding-block: var(--space-2xl) var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.72);
  margin-top: var(--space-sm);
}

.footer-heading {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-gold);
}

.footer-social {
  display: flex;
  gap: 0.6rem;
  margin-top: var(--space-md);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-gold);
  transform: translateY(-2px);
}

.footer-social svg {
  width: 16px;
  height: 16px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
}

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

/* ============ Shared layout utilities ============ */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Breadcrumbs , audit fix: site had no wayfinding cues */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  padding-block: var(--space-md);
}

.breadcrumbs a {
  color: var(--color-text-muted);
  font-weight: 600;
}

.breadcrumbs a:hover {
  color: var(--color-blue);
}

.breadcrumbs .sep {
  opacity: 0.6;
}

.breadcrumbs .current {
  color: var(--color-charcoal);
  font-weight: 600;
}

/* Page hero band used on inner pages */
.page-hero {
  background: linear-gradient(135deg, var(--color-blue-darker), var(--color-blue) 120%);
  color: #fff;
  padding-block: var(--space-2xl);
}

.page-hero h1 {
  color: #fff;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
}

.back-to-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px rgba(43, 153, 206, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 90;
  border: none;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}