/**
 * Nick Kids — Global Layout Components
 * ====================================
 * Header, SearchBar, MobileNav (drawer), BottomNav, Breadcrumb, Footer.
 * These are GLOBAL: one implementation, used on every template.
 */

/* =======================================================================
 * HEADER — .nk-header
 * Mobile  (<1024px): [menu] [logo] [search][cart]   — 56px, sticky
 * Desktop (≥1024px): [logo] [nav] [search] [account][wish][cart] — 80px
 * ===================================================================== */

.nk-header {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--nk-z-header);
  background-color: var(--nk-surface-page);
  border-block-end: var(--nk-border-hairline);
  padding-block-start: var(--nk-safe-top);
}

/* Slight elevation once the page scrolls (toggled by header.js). */
.nk-header--scrolled { box-shadow: var(--nk-shadow-sm); border-block-end-color: transparent; }

.nk-header__bar {
  display: flex;
  align-items: center;
  gap: var(--nk-space-2);
  block-size: var(--nk-header-height);
}

.nk-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--nk-space-2);
  font-family: var(--nk-font-display);
  font-size: var(--nk-text-xl);
  font-weight: var(--nk-weight-bold);
  color: var(--nk-text-strong);
  text-decoration: none;
  white-space: nowrap;
  min-block-size: var(--nk-touch-target);
}
/* On mobile the logo is centred between the two icon clusters. */
.nk-header__logo { margin-inline: auto; }

.nk-header__actions { display: flex; align-items: center; gap: var(--nk-space-1); }
.nk-header__nav { display: none; }
.nk-header__search { display: none; }

/* Announcement strip above the header. */
.nk-announce {
  background-color: var(--nk-navy-800);
  color: var(--nk-text-inverse);
  text-align: center;
  font-size: var(--nk-text-sm);
  padding-block: var(--nk-space-2);
}
.nk-announce a { color: var(--nk-coral-300); }

@media (min-width: 1024px) {
  .nk-header__logo { margin-inline: 0; font-size: var(--nk-text-2xl); }
  .nk-header__bar { gap: var(--nk-space-6); }

  .nk-header__nav { display: flex; align-items: center; gap: var(--nk-space-1); }
  .nk-header__search { display: block; flex: 1; max-inline-size: 420px; margin-inline-start: auto; }
  .nk-header__burger { display: none; }
  .nk-header__search-toggle { display: none; }
}

/* Primary nav links */
.nk-nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--nk-space-1);
  padding-inline: var(--nk-space-3);
  min-block-size: var(--nk-touch-target);
  border-radius: var(--nk-radius-md);
  font-size: var(--nk-text-md);
  font-weight: var(--nk-weight-medium);
  color: var(--nk-text-default);
  text-decoration: none;
  transition: color var(--nk-transition-base), background-color var(--nk-transition-base);
}
.nk-nav-link:hover { color: var(--nk-text-strong); background-color: var(--nk-navy-50); }
.nk-nav-link[aria-current="page"] { color: var(--nk-text-strong); font-weight: var(--nk-weight-semibold); }

/* =======================================================================
 * SEARCH BAR — .nk-search
 * ===================================================================== */

.nk-search { position: relative; }
.nk-search__input {
  inline-size: 100%;
  min-block-size: var(--nk-touch-target);
  padding-inline-start: var(--nk-space-10);
  padding-inline-end: var(--nk-space-4);
  background-color: var(--nk-surface-raised);
  border: var(--nk-border-width) solid var(--nk-border-default);
  border-radius: var(--nk-radius-pill);
  font-size: var(--nk-text-md);
}
.nk-search__input:focus-visible { border-color: var(--nk-border-accent); outline-offset: 0; }
.nk-search__icon {
  position: absolute;
  inset-inline-start: var(--nk-space-4);
  inset-block-start: 50%;
  transform: translateY(-50%);
  color: var(--nk-text-muted);
  pointer-events: none;
}
.nk-search__clear {
  position: absolute;
  inset-inline-end: var(--nk-space-2);
  inset-block-start: 50%;
  transform: translateY(-50%);
}

/**
 * Mobile search overlay — full screen, opened from the header icon.
 * Full screen beats a cramped inline field: the keyboard takes half the
 * viewport and suggestions need the rest.
 */
.nk-search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--nk-z-modal);
  background-color: var(--nk-surface-page);
  padding: var(--nk-space-4) var(--nk-gutter);
  padding-block-start: calc(var(--nk-space-4) + var(--nk-safe-top));
  display: none;
  flex-direction: column;
  gap: var(--nk-space-4);
}
.nk-search-overlay[data-open="true"] { display: flex; }
.nk-search-overlay__head { display: flex; align-items: center; gap: var(--nk-space-2); }
.nk-search-overlay__head .nk-search { flex: 1; }
@media (min-width: 1024px) { .nk-search-overlay { display: none !important; } }

/* Suggestion list — shared by the overlay and the desktop dropdown. */
.nk-search-suggest { display: grid; gap: var(--nk-space-1); }
.nk-search-suggest__item {
  display: flex;
  align-items: center;
  gap: var(--nk-space-3);
  padding: var(--nk-space-3);
  min-block-size: var(--nk-touch-target);
  border-radius: var(--nk-radius-md);
  color: var(--nk-text-default);
  text-decoration: none;
}
.nk-search-suggest__item:hover,
.nk-search-suggest__item[aria-selected="true"] { background-color: var(--nk-navy-50); }

/* =======================================================================
 * MOBILE NAV DRAWER — .nk-drawer
 * Slides in from the inline-start edge (right in RTL).
 * ===================================================================== */

.nk-scrim {
  position: fixed;
  inset: 0;
  z-index: var(--nk-z-overlay);
  background-color: var(--nk-surface-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--nk-duration-normal) var(--nk-ease-standard), visibility var(--nk-duration-normal);
}
.nk-scrim[data-open="true"] { opacity: 1; visibility: visible; }

.nk-drawer {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  z-index: var(--nk-z-drawer);
  inline-size: min(86vw, 360px);
  background-color: var(--nk-surface-page);
  display: flex;
  flex-direction: column;
  /* Logical translate: -100% moves it off the inline-start edge in both
     directions, so no [dir="rtl"] override is needed. */
  transform: translateX(-100%);
  transition: transform var(--nk-duration-normal) var(--nk-ease-out);
  padding-block-start: var(--nk-safe-top);
  padding-block-end: var(--nk-safe-bottom);
  overscroll-behavior: contain;
}
[dir="rtl"] .nk-drawer { transform: translateX(100%); }
.nk-drawer[data-open="true"] { transform: translateX(0); }
[dir="rtl"] .nk-drawer[data-open="true"] { transform: translateX(0); }

.nk-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--nk-space-4);
  border-block-end: var(--nk-border-hairline);
}
.nk-drawer__body { flex: 1; overflow-y: auto; padding: var(--nk-space-2) var(--nk-space-2) var(--nk-space-6); }
.nk-drawer__foot { padding: var(--nk-space-4); border-block-start: var(--nk-border-hairline); }

.nk-drawer__link {
  display: flex;
  align-items: center;
  gap: var(--nk-space-3);
  min-block-size: var(--nk-touch-target-lg);
  padding-inline: var(--nk-space-4);
  border-radius: var(--nk-radius-md);
  color: var(--nk-text-strong);
  font-size: var(--nk-text-md);
  font-weight: var(--nk-weight-medium);
  text-decoration: none;
}
.nk-drawer__link:hover { background-color: var(--nk-navy-50); }
/* Chevron pointing "forward" — mirrored in RTL via .nk-icon--directional. */
.nk-drawer__link .nk-drawer__chev { margin-inline-start: auto; color: var(--nk-text-subtle); }

/* Locks background scroll while the drawer/modal is open. */
body.nk-scroll-locked { overflow: hidden; touch-action: none; }

/* =======================================================================
 * BOTTOM NAV — .nk-bottom-nav
 * Mobile only. Five slots max; labels always visible.
 * ===================================================================== */

.nk-bottom-nav {
  position: fixed;
  inset-inline: 0;
  inset-block-end: 0;
  z-index: var(--nk-z-bottom-nav);
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  background-color: var(--nk-surface-raised);
  border-block-start: var(--nk-border-hairline);
  padding-block-end: var(--nk-safe-bottom);
}
.nk-bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--nk-space-half);
  min-block-size: var(--nk-bottom-nav-height);
  color: var(--nk-text-muted);
  font-size: var(--nk-text-2xs);
  text-decoration: none;
  transition: color var(--nk-transition-base);
}
.nk-bottom-nav__item[aria-current="page"] { color: var(--nk-action-primary); }
.nk-bottom-nav__item[aria-current="page"] .nk-icon { stroke-width: var(--nk-icon-stroke-bold); }

@media (min-width: 1024px) { .nk-bottom-nav { display: none; } }

/* Pages using the bottom nav must reserve space so it never covers content. */
.nk-has-bottom-nav main {
  padding-block-end: calc(var(--nk-bottom-nav-height) + var(--nk-safe-bottom));
}
@media (min-width: 1024px) { .nk-has-bottom-nav main { padding-block-end: 0; } }

/* =======================================================================
 * BREADCRUMB — .nk-breadcrumb
 * Separators are CSS-generated and direction-aware.
 * ===================================================================== */

.nk-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: var(--nk-space-2);
  font-size: var(--nk-text-sm);
  color: var(--nk-text-muted);
  padding-block: var(--nk-space-3);
  /* Long trails scroll instead of wrapping into a tall block on mobile. */
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
}
.nk-breadcrumb::-webkit-scrollbar { display: none; }
.nk-breadcrumb__item { display: flex; align-items: center; gap: var(--nk-space-2); }
.nk-breadcrumb__item + .nk-breadcrumb__item::before {
  content: "/";
  color: var(--nk-text-subtle);
}
[dir="rtl"] .nk-breadcrumb__item + .nk-breadcrumb__item::before { content: "\\"; }
.nk-breadcrumb a {
  color: inherit;
  text-decoration: none;
  /* Meets the 44px touch minimum without making the trail look tall.
     Short Persian crumbs like "خانه" measure ~23px wide, just under the
     24px WCAG 2.5.8 floor, so the inline padding is load-bearing. */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: var(--nk-touch-target);
  min-inline-size: 24px;
  padding-inline: var(--nk-space-1);
}
.nk-breadcrumb a:hover { color: var(--nk-text-accent); }
.nk-breadcrumb__item[aria-current="page"] { color: var(--nk-text-strong); font-weight: var(--nk-weight-medium); }

/* =======================================================================
 * FOOTER — .nk-footer
 * Mobile: accordion column groups. Desktop: 4-column grid.
 * ===================================================================== */

.nk-footer {
  background-color: var(--nk-surface-inverse);
  color: var(--nk-cream-300);
  padding-block: var(--nk-space-10) var(--nk-space-6);
  margin-block-start: var(--nk-section-gap);
}
.nk-footer a { color: var(--nk-cream-300); text-decoration: none; }
.nk-footer__bottom a,
.nk-footer__brand a {
  display: inline-flex;
  align-items: center;
  min-block-size: var(--nk-touch-target);
}
.nk-footer a:hover { color: var(--nk-white); }

.nk-footer__grid { display: grid; gap: var(--nk-space-6); }
.nk-footer__brand { max-inline-size: 40ch; }
.nk-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--nk-space-2);
  font-family: var(--nk-font-display);
  font-size: var(--nk-text-xl);
  font-weight: var(--nk-weight-bold);
  color: var(--nk-white);
  margin-block-end: var(--nk-space-3);
}
.nk-footer__title {
  font-size: var(--nk-text-md);
  font-weight: var(--nk-weight-semibold);
  color: var(--nk-white);
  margin-block-end: var(--nk-space-3);
}
.nk-footer__list { display: grid; gap: var(--nk-space-1); }
.nk-footer__list a {
  display: inline-flex;
  align-items: center;
  min-block-size: var(--nk-touch-target);
  font-size: var(--nk-text-base);
}

.nk-footer__socials { display: flex; gap: var(--nk-space-2); margin-block-start: var(--nk-space-4); }
.nk-footer__social {
  inline-size: var(--nk-touch-target);
  block-size: var(--nk-touch-target);
  display: grid;
  place-items: center;
  border-radius: var(--nk-radius-pill);
  border: var(--nk-border-width) solid var(--nk-border-inverse);
  color: var(--nk-cream-300);
  transition: all var(--nk-transition-base);
}
.nk-footer__social:hover { background-color: var(--nk-action-primary); border-color: transparent; color: var(--nk-white); }

.nk-footer__bottom {
  margin-block-start: var(--nk-space-8);
  padding-block-start: var(--nk-space-5);
  border-block-start: var(--nk-border-width) solid var(--nk-border-inverse);
  display: flex;
  flex-direction: column;
  gap: var(--nk-space-3);
  align-items: center;
  text-align: center;
  font-size: var(--nk-text-sm);
}
/* Iranian e-commerce trust marks (eNamad / Samandehi) live here. */
.nk-footer__trust { display: flex; gap: var(--nk-space-3); }
.nk-footer__trust img { block-size: 64px; inline-size: auto; border-radius: var(--nk-radius-sm); background: var(--nk-white); }

@media (min-width: 768px) {
  .nk-footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--nk-space-8); }
  .nk-footer__bottom { flex-direction: row; justify-content: space-between; text-align: start; }
}