/* ==========================================================================
   NAWIGACJA — STICKY HEADER
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-yellow);
  border-bottom: none;
  transition:
    height var(--nav-transition),
    box-shadow var(--nav-transition),
    background-color var(--nav-transition);
  height: var(--nav-height);
}

.site-header.is-scrolled {
  height: var(--nav-height-scrolled);
  box-shadow: 0 2px 20px rgba(10, 10, 10, 0.12);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  height: 100%;
}

/* --- Logo ----------------------------------------------------------------- */

.site-header__logo {
  flex-shrink: 0;
}

.site-header__logo img {
  height: 48px;
  width: auto;
  transition: height var(--nav-transition);
}

.site-header.is-scrolled .site-header__logo img {
  height: 36px;
}

.site-header__logo-text {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-heading);
  color: var(--color-black);
  line-height: 1;
  text-decoration: none;
}

.site-header__logo-text:hover {
  color: var(--color-coral);
}

/* --- Menu główne (desktop) ----------------------------------------------- */

.site-header__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu > li {
  position: relative;
  display: flex;
  align-items: center;
}

/* Separator "/" między pozycjami menu */
.nav-menu > li + li::before {
  content: '/';
  color: var(--color-black);
  font-weight: 400;
  font-size: 0.875rem;
  flex-shrink: 0;
  pointer-events: none;
  opacity: 0.4;
}

.nav-menu > li > a {
  display: flex;
  align-items: center;
  height: var(--nav-height);
  padding: 0 var(--space-md);
  font-family: var(--font-body);
  font-size: var(--font-menu);
  font-weight: 700;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--color-black);
  text-decoration: none;
  transition: color var(--transition-base);
  white-space: nowrap;
}

.site-header.is-scrolled .nav-menu > li > a {
  height: var(--nav-height-scrolled);
}

.nav-menu > li > a:hover,
.nav-menu > li.current-menu-item > a,
.nav-menu > li.current-menu-parent > a {
  color: var(--color-coral);
}

/* --- Podmenu (dropdown) -------------------------------------------------- */

.nav-menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--color-black);
  border-top: 3px solid var(--color-yellow);
  list-style: none;
  margin: 0;
  padding: var(--space-xs) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity var(--transition-base),
    transform var(--transition-base),
    visibility var(--transition-base);
  z-index: 100;
}

.nav-menu > li:hover > .sub-menu,
.nav-menu > li:focus-within > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-menu .sub-menu a {
  display: block;
  padding: 0.6rem var(--space-md);
  font-size: var(--font-small);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-menu);
  text-transform: uppercase;
  color: var(--color-gray-200);
  text-decoration: none;
  transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-menu .sub-menu a:hover {
  color: var(--color-yellow);
  background-color: rgba(255, 255, 255, 0.05);
}

/* --- Akcje (search + CTA + hamburger) ------------------------------------ */

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.site-header__search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-black);
  transition: color var(--transition-base);
  background: none;
  border: none;
  cursor: pointer;
}

.site-header__search-toggle:hover {
  color: var(--color-coral);
}

.site-header__cta {
  font-size: 0.8rem;
  padding: 0.6rem 1.25rem;
}

.site-header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 44px;
  height: 44px;
  padding: 12px 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-black);
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

/* Hamburger — stan "X" gdy menu otwarte */
.site-header__hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header__hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
  opacity: 0;
}
.site-header__hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Wyszukiwarka header -------------------------------------------------- */

.header-search {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-gray-100);
  border-bottom: 3px solid var(--color-yellow);
  padding: var(--space-md) 0;
  z-index: 999;
}

.header-search .search-form {
  display: flex;
  gap: var(--space-xs);
  max-width: 600px;
  margin: 0 auto;
}

.header-search .search-field {
  flex: 1;
  padding: 0.75rem var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--font-body-size);
  border: 2px solid var(--color-black);
  background: var(--color-white);
  color: var(--color-black);
  outline: none;
}

.header-search .search-field:focus {
  border-color: var(--color-yellow);
}

.header-search .search-submit {
  @extend .btn;
  padding: 0.75rem var(--space-md);
}

/* ==========================================================================
   MOBILE MENU
   ========================================================================== */

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 90vw);
  background-color: var(--color-black);
  color: var(--color-white);
  z-index: 2000;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu[aria-hidden="false"] {
  transform: translateX(0);
}

.mobile-menu__overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(10, 10, 10, 0.6);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  backdrop-filter: blur(2px);
}

.mobile-menu__overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__inner {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg) var(--space-md);
  min-height: 100%;
}

.mobile-menu__close {
  align-self: flex-end;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu__close:hover {
  color: var(--color-yellow);
}

.mobile-nav-menu {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-xl);
}

.mobile-nav-menu > li > a {
  display: block;
  padding: 1rem 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-heading);
  color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-800);
  text-decoration: none;
  transition: color var(--transition-base);
}

.mobile-nav-menu > li > a:hover {
  color: var(--color-yellow);
}

.mobile-nav-menu .sub-menu {
  list-style: none;
  padding: var(--space-xs) 0 var(--space-xs) var(--space-md);
}

.mobile-nav-menu .sub-menu a {
  display: block;
  padding: 0.5rem 0;
  font-size: var(--font-small);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-caps);
  text-transform: uppercase;
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-base);
}

.mobile-nav-menu .sub-menu a:hover {
  color: var(--color-yellow);
}

.mobile-menu__cta {
  margin-top: auto;
  align-self: stretch;
  text-align: center;
  background-color: var(--color-yellow);
  color: var(--color-black);
  border-color: var(--color-yellow);
}

/* ==========================================================================
   RESPONSIVE — ukrywanie/pokazywanie elementów
   ========================================================================== */

@media (max-width: 1023px) {
  .site-header__nav {
    display: none;
  }

  .site-header__cta {
    display: none;
  }

  .site-header__hamburger {
    display: flex;
  }
}

@media (min-width: 1024px) {
  .site-header__hamburger {
    display: none;
  }

  .mobile-menu,
  .mobile-menu__overlay {
    display: none;
  }
}