/* ── Mega navigation ── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mega-header {
  background: rgba(2, 0, 16, 0.82);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(74, 47, 158, 0.4);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.mega-header.is-scrolled {
  background: rgba(2, 0, 16, 0.95);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 24px rgba(107, 63, 207, 0.08);
}

.mega-header .nav-wrap {
  max-width: 1400px;
  padding: 0 24px;
}

.mega-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  position: relative;
}

.mega-nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: space-between;
}

.mega-nav-groups {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  flex-wrap: wrap;
}

.mega-nav-item {
  position: relative;
}

.mega-nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--dim);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.mega-nav-trigger:hover,
.mega-nav-item.is-open .mega-nav-trigger {
  color: var(--cyan);
  background: rgba(0, 245, 255, 0.06);
  border-color: rgba(0, 245, 255, 0.15);
}

.mega-chevron {
  transition: transform 0.25s ease;
  opacity: 0.7;
}

.mega-nav-item.is-open .mega-chevron {
  transform: rotate(180deg);
  opacity: 1;
}

.mega-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 640px;
  max-width: min(92vw, 880px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 200;
}

.mega-nav-item.is-open .mega-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-dropdown-inner {
  background: linear-gradient(160deg, rgba(15, 8, 40, 0.98), rgba(8, 4, 28, 0.98));
  border: 1px solid rgba(74, 47, 158, 0.55);
  border-radius: 18px;
  padding: 24px;
  box-shadow:
    0 24px 64px rgba(0, 0, 0, 0.55),
    0 0 40px rgba(107, 63, 207, 0.12),
    inset 0 1px 0 rgba(0, 245, 255, 0.08);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
}

.mega-dropdown-inner:has(.mega-columns-full) {
  grid-template-columns: 1fr;
}

.mega-featured {
  padding: 18px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(107, 63, 207, 0.2), rgba(0, 245, 255, 0.06));
  border: 1px solid rgba(0, 245, 255, 0.2);
}

.mega-featured-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.mega-featured h4 {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.3;
}

.mega-featured p {
  font-size: 0.82rem;
  color: var(--dim);
  line-height: 1.5;
  margin-bottom: 14px;
}

.mega-featured-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
}

.mega-featured-link:hover {
  color: var(--magenta);
  text-decoration: none;
}

.mega-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.mega-column-title {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(74, 47, 158, 0.35);
}

.mega-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mega-link {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

.mega-link:hover {
  background: rgba(0, 245, 255, 0.08);
  text-decoration: none;
  transform: translateX(3px);
}

.mega-link-icon {
  font-size: 1.1rem;
  line-height: 1.2;
  flex-shrink: 0;
}

.mega-link-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mega-link-text strong {
  font-size: 0.88rem;
  color: var(--text);
  font-weight: 600;
}

.mega-link-text small {
  font-size: 0.75rem;
  color: var(--dim);
  line-height: 1.4;
}

.mega-nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.mega-action-link {
  color: var(--dim);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.mega-action-link:hover {
  color: var(--cyan);
  text-decoration: none;
}

.mega-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 0, 16, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  z-index: 90;
  pointer-events: none;
}

.mega-backdrop.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  background: var(--nebula);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.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 mega */
.mega-footer {
  padding: 64px 0 28px;
}

.footer-mega-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 36px 28px;
  margin-bottom: 40px;
}

.footer-brand-col {
  max-width: 300px;
}

.footer-logo {
  margin-bottom: 16px;
}

/* Brand logo — full Autonomous Ghost mark */
.logo-brand {
  flex-shrink: 0;
  text-decoration: none;
}

.logo-brand:hover {
  text-decoration: none;
}

.logo-img-brand {
  display: block;
  width: auto;
  height: 52px;
  max-width: 180px;
  object-fit: contain;
  object-position: left center;
  border-radius: 0;
}

.logo-img-footer {
  height: 72px;
  max-width: 220px;
}

.mega-header .logo-brand {
  margin-right: 8px;
}

@media (max-width: 768px) {
  .logo-img-brand {
    height: 44px;
    max-width: 140px;
  }

  .logo-img-footer {
    height: 60px;
    max-width: 180px;
  }
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--nebula);
  border: 1px solid var(--border);
  color: var(--dim);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
}

.footer-social a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 16px rgba(0, 245, 255, 0.2);
  text-decoration: none;
}

.footer-col-title {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}

.footer-col-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-links a {
  color: var(--dim);
  font-size: 0.88rem;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col-links a:hover {
  color: var(--cyan);
  text-decoration: none;
}

.footer-powered-by {
  padding-top: 24px;
  text-align: center;
}

.footer-powered-text {
  margin: 0;
  color: var(--dim);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.footer-powered-text a {
  color: var(--cyan);
  text-decoration: none;
  font-weight: 600;
}

.footer-powered-text a:hover {
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 20px;
  margin-top: 16px;
  border-top: 1px solid rgba(74, 47, 158, 0.35);
  color: var(--dim);
  font-size: 0.82rem;
}

.footer-bottom-right {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-bottom-right a {
  color: var(--dim);
  text-decoration: none;
}

.footer-bottom-right a:hover {
  color: var(--cyan);
  text-decoration: none;
}

.footer-sep {
  opacity: 0.5;
  margin: 0 4px;
}

body:has(.mega-header) main {
  padding-top: 76px;
}

/* Responsive */
@media (max-width: 1100px) {
  .footer-mega-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-brand-col {
    grid-column: 1 / -1;
    max-width: none;
  }

  .mega-nav-groups {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mega-nav-menu {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 20px 32px;
    background: rgba(2, 0, 16, 0.97);
    border-top: 1px solid rgba(74, 47, 158, 0.4);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 150;
  }

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

  .mega-nav-menu .mega-nav-groups {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 4px;
  }

  .mega-nav-item {
    width: 100%;
  }

  .mega-nav-trigger {
    width: 100%;
    justify-content: space-between;
  }

  .mega-dropdown {
    position: static;
    transform: none;
    min-width: 0;
    max-width: none;
    width: 100%;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
    margin-top: 4px;
  }

  .mega-nav-item.is-open .mega-dropdown {
    display: block;
    transform: none;
  }

  .mega-dropdown-inner {
    grid-template-columns: 1fr;
    padding: 16px;
    border-radius: 12px;
  }

  .mega-nav-actions {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(74, 47, 158, 0.35);
    flex-direction: column;
    align-items: stretch;
  }

  .mega-nav-actions .btn {
    text-align: center;
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .footer-mega-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* App sub-navigation (logged-in platform silo) */
.app-subnav {
  position: relative;
  z-index: 90;
  background: rgba(8, 4, 28, 0.92);
  border-bottom: 1px solid rgba(74, 47, 158, 0.35);
  margin-top: 72px;
}

.app-subnav-inner {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 8px 0;
  scrollbar-width: none;
}

.app-subnav-inner::-webkit-scrollbar { display: none; }

.app-subnav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

.app-subnav-link:hover {
  color: var(--cyan);
  background: rgba(0, 245, 255, 0.06);
}

.app-subnav-link.active {
  color: var(--cyan);
  background: rgba(0, 245, 255, 0.1);
  border: 1px solid rgba(0, 245, 255, 0.25);
}

.app-subnav-icon { font-size: 0.9rem; }

body:has(.app-subnav) main { padding-top: 0; }

/* Breadcrumb silo navigation */
.breadcrumbs {
  padding: 12px 0 0;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  list-style: none;
  font-size: 0.8rem;
}

.breadcrumb-item a {
  color: var(--dim);
  text-decoration: none;
}

.breadcrumb-item a:hover { color: var(--cyan); }

.breadcrumb-item.active span {
  color: var(--text);
  font-weight: 600;
}

.breadcrumb-sep {
  color: rgba(154, 168, 204, 0.5);
  margin: 0 4px;
}