/* ==========================================================================
   Cloudstore Central — Header, navigation, mega menus, footer
   ========================================================================== */

/* Skip link */
.skip-link {
  position: absolute;
  left: var(--space-sm);
  top: -4rem;
  z-index: 100;
  background: var(--colour-ink);
  color: #fff;
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top var(--duration) var(--easing);
}
.skip-link:focus { top: var(--space-sm); color: #fff; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--colour-cloud-white) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: var(--border-hairline);
  transition: box-shadow var(--duration) var(--easing),
    background-color var(--duration) var(--easing);
}
.site-header[data-scrolled="true"] {
  box-shadow: var(--shadow-sm);
  background: color-mix(in srgb, var(--colour-cloud-white) 98%, transparent);
}

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

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: var(--fw-bold);
}
.brand:hover { color: var(--text-primary); }
.brand svg { height: 1.75rem; width: auto; }

/* Primary nav (desktop) */
.primary-nav { display: none; }
@media (min-width: 64rem) {
  .primary-nav { display: block; }
  .primary-nav > ul {
    display: flex;
    align-items: center;
    gap: var(--space-3xs);
    list-style: none;
    margin: 0; padding: 0;
  }
}

.nav-item { position: relative; }

.nav-link, .nav-disclosure {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: var(--space-2xs) var(--space-xs);
  font-size: var(--fs-nav);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  background: none;
}
.nav-link:hover, .nav-disclosure:hover { color: var(--text-primary); background: var(--bg-muted); }
.nav-link[aria-current="page"] { color: var(--text-primary); font-weight: var(--fw-semibold); }
.nav-item--active > .nav-link,
.nav-item--active > .nav-disclosure { color: var(--text-primary); }
.nav-item--active > .nav-link::after,
.nav-item--active > .nav-disclosure::after {
  content: "";
  position: absolute;
  left: var(--space-xs); right: var(--space-xs);
  bottom: 2px; height: 2px;
  background: linear-gradient(90deg, var(--colour-cyan), var(--colour-teal));
  border-radius: var(--radius-pill);
}

.nav-disclosure .chevron {
  width: 0.7em; height: 0.7em;
  transition: transform var(--duration) var(--easing);
}
.nav-disclosure[aria-expanded="true"] .chevron { transform: rotate(180deg); }

/* Mega menu */
.mega-menu {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: calc(100% + 0.25rem);
  width: max-content;
  max-width: min(76rem, 94vw);
  background: var(--colour-cloud-white);
  border: var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-lg);
  z-index: 60;
}
/* Transparent bridge over the 0.25rem visual gap so the pointer never leaves
   the hoverable area when travelling from the toggle down into the panel. */
.mega-menu::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: -0.3rem; height: 0.3rem;
}
.mega-menu[hidden] { display: none; }
.mega-menu-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: start;
  gap: var(--space-lg) var(--space-xl);
}
.mega-column { flex: 1 1 auto; }
.mega-group-title {
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  font-weight: var(--fw-semibold);
  color: var(--text-muted);
  margin-bottom: var(--space-2xs);
  white-space: nowrap;
}
.mega-list { list-style: none; margin: 0; padding: 0; }
.mega-list li + li { margin-top: 0.15rem; }
.mega-list a {
  display: block;
  padding: var(--space-2xs) var(--space-xs);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  white-space: nowrap;
}
.mega-list a:hover { background: var(--bg-muted); color: var(--text-primary); }
.mega-footer {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: var(--border-hairline);
}

/* Platform submenu (a normal overview link + a real disclosure button).
   The link always navigates to the overview; the small chevron button toggles
   a compact dropdown. Both work with the keyboard and Escape, and the markup is
   usable without JavaScript via the no-JS fallback list. */
.has-submenu { display: inline-flex; align-items: center; }
.nav-subtoggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--max-touch);
  min-width: 2rem;
  padding: var(--space-2xs) 0.25rem;
  margin-left: -0.35rem;
  color: var(--text-secondary);
  background: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-subtoggle:hover { color: var(--text-primary); background: var(--bg-muted); }
.nav-subtoggle .chevron {
  width: 0.7em; height: 0.7em;
  transition: transform var(--duration) var(--easing);
}
.nav-subtoggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }
/* Keep the active underline under the overview link only (not the chevron). */
.nav-item--active.has-submenu > .nav-subtoggle::after { content: none; }

.nav-submenu {
  position: absolute;
  left: 0;
  top: calc(100% + 0.25rem);
  min-width: 15rem;
  background: var(--colour-cloud-white);
  border: var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2xs);
  z-index: 60;
}
/* Transparent bridge over the visual gap (see .mega-menu::before). */
.nav-submenu::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: -0.3rem; height: 0.3rem;
}
.nav-submenu[hidden] { display: none; }
.nav-submenu__list { list-style: none; margin: 0; padding: 0; }
.nav-submenu__list a {
  display: block;
  padding: var(--space-2xs) var(--space-xs);
  min-height: var(--max-touch);
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  white-space: nowrap;
}
.nav-submenu__list a:hover { background: var(--bg-muted); color: var(--text-primary); }

/* Header actions */
.header-actions { display: none; }
@media (min-width: 64rem) {
  .header-actions { display: inline-flex; align-items: center; gap: var(--space-2xs); }
}

/* Nav toggle (mobile) */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  min-height: var(--max-touch);
  min-width: var(--max-touch);
  justify-content: center;
  padding: var(--space-2xs) var(--space-xs);
  border: var(--border-default);
  border-radius: var(--radius-sm);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
}
@media (min-width: 64rem) { .nav-toggle { display: none; } }

/* Mobile navigation panel */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: none;
}
.mobile-nav[data-open="true"] { display: block; }
.mobile-nav__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 23, 0.5);
}
.mobile-nav__panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(24rem, 90vw);
  background: var(--colour-cloud-white);
  box-shadow: var(--shadow-lg);
  padding: var(--space-md);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.mobile-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-sm);
  border-bottom: var(--border-hairline);
}
.mobile-nav__close {
  min-height: var(--max-touch);
  min-width: var(--max-touch);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: var(--border-default);
  border-radius: var(--radius-sm);
}

.mobile-nav-list { list-style: none; margin: 0; padding: 0; }
.mobile-nav-list > li { border-bottom: var(--border-hairline); }
.mobile-nav-list a,
.mobile-nav-group__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-sm) var(--space-2xs);
  min-height: var(--max-touch);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  text-decoration: none;
  text-align: left;
}
.mobile-nav-group__toggle .chevron { transition: transform var(--duration) var(--easing); }
.mobile-nav-group__toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.mobile-nav-group__panel { padding-bottom: var(--space-sm); }
.mobile-nav-group__panel[hidden] { display: none; }
.mobile-nav-group__panel a {
  padding-left: var(--space-md);
  min-height: 40px;
  color: var(--text-secondary);
  font-weight: var(--fw-regular);
}
.mobile-nav__actions {
  margin-top: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

/* No-JS fallback: a plain wrapped nav list is shown when JS is unavailable.
   The interactive (JS-driven) menus are hidden until the `js` class is set. */
.no-js-nav { padding-block: var(--space-2xs); }
.no-js-nav summary {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  min-height: var(--max-touch);
  padding: var(--space-2xs) var(--space-xs);
  border: var(--border-default);
  border-radius: var(--radius-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
}
.no-js-nav[open] summary { margin-bottom: var(--space-2xs); }
.no-js-nav ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: var(--space-2xs); }
.no-js-nav a {
  display: inline-flex;
  align-items: center;
  min-height: var(--max-touch);
  padding: var(--space-2xs) var(--space-xs);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--fs-nav);
  font-weight: var(--fw-medium);
}
.no-js-nav a:hover { background: var(--bg-muted); color: var(--text-primary); }
.js .no-js-nav { display: none; }
.no-js .primary-nav,
.no-js .nav-toggle,
.no-js .header-actions { display: none; }

/* Cloudstore brand: full cloudsto.re logo (SVG, light + dark variants). */
.wordmark { display: inline-flex; align-items: center; }
.wordmark-logo { height: 4.125rem; width: auto; display: block; }
.site-footer .wordmark-logo { height: 4.875rem; }

/* Nested sublists inside the mobile navigation groups. */
.mobile-nav-sublist { list-style: none; margin: 0; padding: var(--space-2xs) 0 var(--space-xs) var(--space-sm); display: flex; flex-direction: column; gap: 2px; }
.mobile-nav-sublist a {
  display: block;
  min-height: var(--max-touch);
  display: flex;
  align-items: center;
  padding: var(--space-2xs) var(--space-xs);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--fs-nav);
}
.mobile-nav-sublist a:hover { background: var(--bg-muted); color: var(--text-primary); }

/* Breadcrumbs */
.breadcrumbs { padding-block: var(--space-sm); }
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2xs);
  list-style: none;
  margin: 0; padding: 0;
  font-size: var(--fs-small);
  color: var(--text-muted);
}
.breadcrumbs li { display: inline-flex; align-items: center; gap: var(--space-2xs); }
.breadcrumbs li + li::before { content: "/"; color: var(--colour-neutral-mid); }
.breadcrumbs a { color: var(--text-secondary); text-decoration: none; }
.breadcrumbs a:hover { color: var(--text-primary); text-decoration: underline; }
.breadcrumbs [aria-current="page"] { color: var(--text-primary); }

/* Footer */
.site-footer {
  background: var(--bg-inverse-deep);
  color: var(--text-on-inverse-muted);
  padding-block: var(--space-2xl) var(--space-lg);
  margin-top: auto;
}
.footer-top {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 1.4fr 2fr;
}
@media (max-width: 59.99rem) { .footer-top { grid-template-columns: 1fr; } }
.footer-positioning { max-width: 32ch; }
.footer-positioning .brand { color: #fff; }
.footer-positioning p { color: var(--text-on-inverse-muted); }
.footer-groups {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
}
.footer-group h2 {
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  color: var(--text-on-inverse);
  margin-bottom: var(--space-sm);
}
.footer-group ul { list-style: none; margin: 0; padding: 0; }
.footer-group li + li { margin-top: var(--space-2xs); }
.footer-group a {
  color: var(--text-on-inverse-muted);
  text-decoration: none;
  font-size: var(--fs-small);
}
.footer-group a:hover { color: #fff; text-decoration: underline; }
.footer-bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-small);
}
.footer-legal { display: flex; flex-wrap: wrap; gap: var(--space-md); align-items: center; }
.footer-legal a { color: var(--text-on-inverse-muted); text-decoration: none; }
.footer-legal a:hover { color: #fff; text-decoration: underline; }
.footer-social { display: flex; gap: var(--space-sm); }