/* ==========================================================================
   Navigation — announcement bar, header, desktop mega menu, mobile menu
   ========================================================================== */

.announcement {
  background: var(--color-ink-950);
  color: var(--text-on-dark);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
}

.announcement__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding-block: 0.55rem;
  text-align: center;
}

.announcement__inner strong { color: var(--color-cyan-300); font-weight: var(--fw-semibold); }

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px) saturate(1.25);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  border-bottom: 1px solid var(--border-subtle);
  transition: box-shadow var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled { box-shadow: var(--shadow-md); }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(0.55rem, 1.1vw, 1.15rem);
  min-height: var(--header-height);
  padding-block: 0.55rem;
}

.brand {
  display: flex;
  align-items: center;
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  line-height: 1.1;
  color: var(--text-primary);
  margin-right: auto;
  flex-shrink: 0;
  min-width: 0;
}

.brand__logo {
  width: clamp(11rem, 13.2vw, 13.75rem);
  height: auto;
  max-height: 4.25rem;
  object-fit: contain;
  object-position: left center;
}

.brand__mark {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand__mark svg { width: 100%; height: 100%; }

.brand__name { display: flex; flex-direction: column; gap: 0.2rem; }
.brand__name span:first-child { font-size: 0.85rem; font-weight: 700; letter-spacing: 0; }
.brand__name small {
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1;
}

/* ---- Primary nav (desktop) ---- */
.primary-nav { display: none; }

@media (min-width: 88rem) {
  .site-header__inner > .brand { margin-right: 0; }

  .primary-nav {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 0.05rem;
    height: 100%;
    flex: 1 1 auto;
    min-width: 0;
  }
}

.primary-nav__list {
  display: flex;
  align-items: stretch;
  gap: 0.05rem;
  justify-content: center;
  width: 100%;
  min-width: 0;
}

.primary-nav__item { position: relative; display: flex; }

.primary-nav__link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.52rem 0.5rem;
  font-size: 0.79rem;
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible,
.primary-nav__item.is-open .primary-nav__link {
  color: var(--accent-primary-strong);
  background: var(--color-mist-100);
}

.primary-nav__link[aria-current="page"] {
  color: var(--accent-primary-strong);
  font-weight: var(--fw-semibold);
}

.primary-nav__caret {
  width: 0.58rem; height: 0.58rem;
  transition: transform var(--duration-base) var(--ease-standard);
}

.primary-nav__item.is-open .primary-nav__caret { transform: rotate(180deg); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
}

.header-actions .btn { display: none; }

.header-actions .btn--sm {
  min-height: 2.35rem;
  padding-inline: 0.82rem;
  white-space: nowrap;
}

@media (min-width: 96rem) {
  .header-actions .btn--primary { display: inline-flex; }
}

@media (min-width: 116rem) {
  .header-actions .btn--ghost { display: inline-flex; }
}

/* ---- Mega menu ---- */
.mega-menu {
  position: absolute;
  top: calc(100% + 0.6rem);
  left: 50%;
  transform: translate(-50%, 8px);
  width: min(54rem, calc(100vw - 2.5rem));
  background: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-md);
  z-index: var(--z-mega);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out), visibility var(--duration-base);
}

.primary-nav__item.is-open .mega-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

@media (prefers-reduced-motion: reduce) {
  .mega-menu { transition: opacity var(--duration-fast) linear; }
}

.mega-menu__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-sm);
}

.mega-menu__intro h3 {
  font-size: var(--fs-md);
  margin-bottom: 0.4rem;
}

.mega-menu__intro p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.mega-menu__intro .btn { width: 100%; justify-content: center; }

.mega-menu__col-title {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.mega-menu__links { display: flex; flex-direction: column; gap: 0.15rem; }

.mega-menu__link {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.48rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  color: var(--text-primary);
  transition: background var(--duration-fast) var(--ease-standard);
}

.mega-menu__link:hover,
.mega-menu__link:focus-visible { background: var(--color-mist-100); }

.mega-menu__link-icon {
  width: 1.2rem; height: 1.2rem;
  flex-shrink: 0;
  color: var(--accent-primary-strong);
  margin-top: 0.1rem;
}

.mega-menu__link strong { display: block; font-weight: var(--fw-medium); }
.mega-menu__link small { display: block; color: var(--text-muted); font-size: var(--fs-xs); }

.mega-menu__panel {
  background: var(--surface-dark);
  color: var(--text-on-dark);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  background-image: var(--gradient-panel);
}

@media (max-width: 96rem) {
  .brand__logo {
    width: clamp(10rem, 13vw, 12rem);
    max-height: 3.85rem;
  }
  .primary-nav__link {
    padding-inline: 0.44rem;
    font-size: 0.76rem;
  }
}

/* ---- Mobile trigger ----
   The checkbox is the single source of truth for open/closed state, so the
   menu works with zero JavaScript. navigation.js enhances the same
   checkbox (focus trap, Escape key, body-scroll lock, aria bookkeeping)
   rather than maintaining a second, separate state. */
.nav-toggle-checkbox {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav-toggle-checkbox:focus-visible ~ .site-header .nav-toggle {
  outline: 3px solid var(--accent-primary);
  outline-offset: 3px;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--surface-raised);
  color: var(--text-primary);
  cursor: pointer;
}

@media (min-width: 88rem) {
  .nav-toggle { display: none; }
  /* The mobile toggle and panel are irrelevant once the desktop nav takes
     over — remove the checkbox from tab order and force the panel closed
     regardless of its checked state, so a resize (or a stray keyboard
     Tab+Space) can never leave the off-canvas panel visible over the
     desktop layout. */
  .nav-toggle-checkbox { display: none; }
  .mobile-nav { display: none !important; }
}

.nav-toggle__bars {
  position: relative;
  width: 1.15rem; height: 0.85rem;
}

.nav-toggle__bars span {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: currentColor;
  border-radius: var(--radius-pill);
  transition: transform var(--duration-base) var(--ease-standard), opacity var(--duration-base) var(--ease-standard);
}

.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle__bars span:nth-child(3) { bottom: 0; }

.nav-toggle-checkbox:checked ~ .site-header .nav-toggle__bars span:nth-child(1) {
  top: 50%; transform: translateY(-50%) rotate(45deg);
}
.nav-toggle-checkbox:checked ~ .site-header .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle-checkbox:checked ~ .site-header .nav-toggle__bars span:nth-child(3) {
  bottom: 50%; transform: translateY(50%) rotate(-45deg);
}

/* ---- Mobile nav panel ---- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: flex;
  justify-content: flex-end;
  visibility: hidden;
}

.nav-toggle-checkbox:not(:checked) ~ .mobile-nav { pointer-events: none; }

.mobile-nav__scrim {
  position: absolute;
  inset: 0;
  display: block;
  cursor: pointer;
  background: rgba(5, 9, 20, 0.55);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.mobile-nav__panel {
  position: relative;
  width: min(24rem, 92vw);
  height: 100%;
  background: var(--surface-page);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm) clamp(1rem, 5vw, 1.35rem) var(--space-lg);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  display: flex;
  flex-direction: column;
}

.nav-toggle-checkbox:checked ~ .mobile-nav {
  visibility: visible;
}

.nav-toggle-checkbox:checked ~ .mobile-nav .mobile-nav__scrim { opacity: 1; }
.nav-toggle-checkbox:checked ~ .mobile-nav .mobile-nav__panel { transform: translateX(0); }

/* JS adds/removes this class only to coordinate the entrance/exit
   transition timing with focus management; the checkbox above already
   guarantees the menu opens and closes without it. */
.mobile-nav.is-open { visibility: visible; }
.mobile-nav.is-open .mobile-nav__scrim { opacity: 1; }
.mobile-nav.is-open .mobile-nav__panel { transform: translateX(0); }

@media (prefers-reduced-motion: reduce) {
  .mobile-nav__panel, .mobile-nav__scrim { transition-duration: 1ms; }
}

.mobile-nav__close { cursor: pointer; }

.mobile-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: var(--space-sm);
}

.mobile-nav__head .brand {
  flex: 1;
  margin-right: 0;
}

.mobile-nav__head .brand__logo {
  width: min(13.75rem, 68vw);
  max-height: 4rem;
}

.mobile-nav__close {
  width: 2.75rem; height: 2.75rem;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.mobile-nav__list { display: flex; flex-direction: column; gap: 0.1rem; }

.mobile-nav__link,
.mobile-nav__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 0.1rem;
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  text-align: left;
  background: none;
  border: none;
  color: var(--text-primary);
}

/* The Fintech Services item is a <details> element so its submenu opens
   and closes natively with zero JavaScript; other items are plain <li>s. */
.mobile-nav__item { border-bottom: 1px solid var(--border-subtle); }

.mobile-nav__trigger {
  cursor: pointer;
  list-style: none;
}

.mobile-nav__trigger::-webkit-details-marker,
.mobile-nav__trigger::marker { display: none; content: ""; }

.mobile-nav__trigger .primary-nav__caret { width: 0.7rem; height: 0.7rem; transition: transform var(--duration-base); }

details.mobile-nav__item[open] > .mobile-nav__trigger .primary-nav__caret { transform: rotate(180deg); }

.mobile-nav__submenu-native {
  padding-bottom: 0.5rem;
  animation: submenu-in var(--duration-base) var(--ease-out);
}

@keyframes submenu-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav__submenu-native { animation: none; }
}

.mobile-nav__sublink {
  display: block;
  padding: 0.55rem 0.2rem 0.55rem 0.9rem;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  border-left: 2px solid var(--border-subtle);
  margin-left: 0.35rem;
}

.mobile-nav__sublink:hover, .mobile-nav__sublink:focus-visible { color: var(--accent-primary-strong); }

.mobile-nav__sublink--all {
  font-weight: var(--fw-semibold);
  color: var(--accent-primary-strong);
  border-left-color: var(--accent-primary);
}

.mobile-nav__foot {
  margin-top: auto;
  padding-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.mobile-nav__foot .btn { width: 100%; justify-content: center; }

.mobile-nav__meta {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

@media (max-width: 30rem) {
  .announcement { display: none; }
  .site-header__inner { padding-block: 0.45rem; }
  .brand__logo {
    width: min(11.25rem, 64vw);
    max-height: 3.55rem;
  }
  .nav-toggle,
  .mobile-nav__close {
    width: 2.5rem;
    height: 2.5rem;
  }
}