/* ============================================================
   Navigation — header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: 1px solid #EBF3FC;
  padding-inline: var(--container-pad);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
  height: var(--nav-height);
}

/* Logo */
.nav__logo {
  flex-shrink: 0;
}

.nav__logo img {
  height: var(--nav-logo-height);
  width: auto;
  display: block;
}

/* Main links row */
.nav__links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex: 1;
}

.nav__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  line-height: var(--lh-nav);
  letter-spacing: var(--tracking-normal);
  vertical-align: middle;
  color: var(--color-ink-muted);
  border-radius: var(--radius-sm);
  border: none;
  background: none;
  transition: color var(--duration-fast) var(--ease),
    background var(--duration-fast) var(--ease);
  white-space: nowrap;
}

.nav__item:hover {
  color: var(--color-ink);
  background: var(--color-surface-alt);
}

.nav__caret {
  transition: transform var(--duration-fast) var(--ease);
  flex-shrink: 0;
}

/* Dropdown wrapper */
.nav__dropdown {
  position: relative;
}

.nav__mobile-icons {
  display: none;
}

.nav__dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--color-surface);
  border: 1px solid #EDEDEA;
  border-radius: 24px;
  box-shadow: 0px 4px 40px 0px #B2BBCB40;
  padding: var(--space-5);
  min-width: 260px;
  z-index: 200;
}

/* Invisible bridge over the 8px gap so hover stays active while moving to menu */
.nav__dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}

.nav__dropdown:hover .nav__dropdown-menu {
  display: block;
}

.nav__dropdown:hover .nav__caret {
  transform: rotate(180deg);
}

/* ── Products mega-menu ── */
.nav__dropdown-menu--products {
  min-width: 860px;
  padding: var(--space-6);
}

.nav__dropdown-menu--support {
  min-width: 320px;
  padding: var(--space-5);
}

.nav__support-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.nav__support-list .nav__prod-item {
  padding-inline: var(--space-3);
  margin-inline: calc(-1 * var(--space-3));
  width: calc(100% + 2 * var(--space-3));
}

.nav__products {
  display: grid;
  grid-template-columns: 5fr 4fr;
  gap: var(--space-4);
  align-items: stretch;
}

.nav__products-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  height: 100%;
}

/* 2-column grid of product items */
.nav__prod-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  row-gap: var(--space-1);
  column-gap: var(--space-5);
  flex: 1;
  align-content: space-between;
  padding-bottom: var(--space-2);
}

.nav__prod-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  margin-inline: calc(-1 * var(--space-3));
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease);
}

.nav__prod-item:hover {
  background: var(--color-surface-alt);
}

.nav__prod-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: #EBF3FC;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.nav__prod-icon img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.nav__prod-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.nav__prod-text strong {
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 700;
  line-height: 20px;
  letter-spacing: -0.5px;
  color: #18181B;
}

.nav__prod-text span {
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 400;
  line-height: 16px;
  letter-spacing: -0.5px;
  text-transform: capitalize;
  color: #8B8B94;
}

/* 2-column grid of drive links */
.nav__drives-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  row-gap: var(--space-1);
  column-gap: var(--space-5);
}

.nav__dropdown-sublabel {
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-normal);
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-2);
  line-height: 1.5;
}

.nav__drives-grid .nav__prod-item {
  margin-inline: calc(-1 * var(--space-3));
}

/* Subscription promo card */
.nav__sub-promo {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid #EDEDEA;
}

.nav__sub-promo-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  margin-inline: calc(-1 * var(--space-3));
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease);
}

.nav__sub-promo-card:hover {
  background: var(--color-surface-alt);
}

.nav__sub-promo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.nav__sub-promo-icon img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.nav__sub-promo-body {
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-normal);
  line-height: 1.5;
  color: var(--color-ink-muted);
}

.nav__sub-promo-link {
  color: var(--color-brand);
  font-weight: var(--weight-medium);
}

/* Platforms footer bar */
.nav__platforms-footer {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid #EDEDEA;
  margin-inline: calc(-1 * var(--space-6));
  padding-inline: var(--space-6);
}

.nav__platforms-label {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-brand);
  color: #fff;
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__platforms-footer a:not(.nav__platforms-label) {
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--duration-fast) var(--ease);
}

.nav__platforms-links {
  display: flex;
  flex: 1;
  justify-content: space-evenly;
  align-items: center;
}

.nav__platforms-footer a:not(.nav__platforms-label):hover {
  color: var(--color-brand);
}

/* Links at bottom of right column */
.nav__products-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-4);
  border-top: 1px solid #EDEDEA;
  margin-top: auto;
}

.nav__products-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 500;
  line-height: 22.4px;
  letter-spacing: 0;
  color: #8B8B94;
  padding: var(--space-1) var(--space-2);
  margin-inline: calc(-1 * var(--space-2));
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease),
    background var(--duration-fast) var(--ease);
}

.nav__products-link:hover {
  color: var(--color-brand);
  background: var(--color-surface-alt);
}

/* ── Simple dropdown (Support, About Us) ── */
.nav__dropdown-cols {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

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

.nav__dropdown-label {
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  color: #8B8B94;
  margin-bottom: var(--space-2);
  display: block;
}

.nav__dropdown-col a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease),
    background var(--duration-fast) var(--ease);
}

.nav__dropdown-col a:hover {
  color: var(--color-brand);
  background: var(--color-brand-light);
}

/* Actions */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

.nav__icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-icon);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease),
    background var(--duration-fast) var(--ease);
  flex-shrink: 0;
}

.nav__icon-btn:hover {
  color: var(--color-ink);
  background: var(--color-surface-alt);
}

.nav__action-link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink-muted);
  transition: color var(--duration-fast) var(--ease);
}

.nav__action-link:hover {
  color: var(--color-ink);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  line-height: 1;
  color: var(--color-surface);
  background: var(--color-brand);
  border-radius: var(--radius-full);
  transition: background var(--duration-fast) var(--ease),
    box-shadow var(--duration-fast) var(--ease);
  white-space: nowrap;
}

.nav__cta:hover {
  color: var(--color-surface);
  background: var(--color-brand-dark);
  box-shadow: var(--shadow-brand);
}

/* Mobile toggle — hidden on desktop */
.nav__mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 22px;
  height: 16px;
  padding: 0;
}

.nav__mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-ink-muted);
  border-radius: var(--radius-full);
  transition: transform var(--duration-base) var(--ease),
    opacity var(--duration-base) var(--ease);
}

/* ── Responsive ── */
@media (max-width: 970px) {
  /* backdrop-filter creates a containing block for fixed children — disable it on mobile */
  .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .nav__links {
    display: none;
    position: fixed;
    inset: var(--nav-height) 0 0 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6);
    gap: var(--space-2);
    overflow-y: auto;
    border-top: 1px solid var(--color-border);
    z-index: 99;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__mobile-toggle {
    display: flex;
  }

  .nav__mobile-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav__mobile-toggle.is-open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }

  .nav__mobile-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav__item {
    width: 100%;
    padding: var(--space-3) var(--space-2);
    font-size: var(--text-base);
  }

  .nav__dropdown {
    width: 100%;
  }

  .nav__dropdown-menu {
    position: static;
    display: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: var(--space-2) 0 var(--space-2) var(--space-4);
    min-width: unset;
    width: 100%;
    background: transparent;
  }

  .nav__dropdown.is-open .nav__dropdown-menu {
    display: block;
  }

  .nav__dropdown-menu--products {
    min-width: unset;
    padding: var(--space-2) 0 var(--space-2) var(--space-4);
  }

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

  .nav__prod-grid {
    grid-template-columns: 1fr;
  }

  .nav__drives-grid {
    grid-template-columns: 1fr;
  }

  .nav__prod-item {
    margin-inline: 0;
  }

  .nav__drives-grid .nav__prod-item {
    margin-inline: 0;
  }

  .nav__products-links {
    margin-top: 0;
  }

  .nav__actions {
    gap: var(--space-3);
  }

  .nav__action-link {
    display: none;
  }

  .nav__icon-btn--mobile-hide {
    display: none;
  }

  .nav__mobile-icons {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-2);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
  }
}