/* ==========================================================================
   TIFOSO INFINITO — Header & Mega Menu
   DESIGN_LANGUAGE.md §13 (Header) e §14 (Mega Menu)
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--motion-base) var(--ease-out),
              border-color var(--motion-base) var(--ease-out);
}

.site-header.is-scrolled,
.site-header.is-open {
  background: var(--color-dark-1);
  border-bottom-color: var(--color-divider);
}

.site-header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding: 0 var(--space-6);
  }
}

.site-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__logo img {
  height: 32px;
  width: auto;
}

/* Navigazione principale — visibile da desktop in su */
.site-header__nav {
  display: none;
}

@media (min-width: 1024px) {
  .site-header__nav {
    display: block;
    flex: 1;
  }

  .site-header__nav-list {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-5);
    list-style: none;
  }

  .site-header__nav-list > li {
    position: relative;
  }

  .site-header__nav-link,
  .site-header__nav-trigger {
    font-family: var(--font-label);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-foreground);
    padding: var(--space-2) 0;
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    transition: color var(--motion-fast) var(--ease-out);
  }

  .site-header__nav-link:hover,
  .site-header__nav-trigger:hover,
  .site-header__nav-trigger[aria-expanded="true"] {
    color: var(--color-brand-red-bright);
  }

  .site-header__nav-trigger .chevron {
    width: 10px;
    height: 10px;
    transition: transform var(--motion-fast) var(--ease-out);
  }

  .site-header__nav-trigger[aria-expanded="true"] .chevron {
    transform: rotate(180deg);
  }
}

/* Azioni a destra: CTA Shop + hamburger */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.site-header__cta {
  background: var(--color-brand-red);
  color: var(--color-foreground);
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 40px;
  transition: background-color var(--motion-fast) var(--ease-out);
}

.site-header__cta:hover {
  background: var(--color-brand-red-bright);
}

.site-header__cta .icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
}

/* Hamburger — solo mobile/tablet */
.site-header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
}

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

.site-header__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-foreground);
  border-radius: 1px;
  transition: transform var(--motion-base) var(--ease-out),
              opacity var(--motion-base) var(--ease-out);
}

.site-header__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.site-header__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Mega Menu (desktop) — DESIGN_LANGUAGE.md §14
   -------------------------------------------------------------------------- */
.mega-menu {
  position: absolute;
  top: calc(100% + 24px);
  left: 50%;
  transform: translateX(-50%);
  width: min(760px, 90vw);
  background: var(--color-dark-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-5);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: opacity var(--motion-base) var(--ease-out),
              transform var(--motion-base) var(--ease-out),
              visibility var(--motion-base);
}

.mega-menu[data-open="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-menu__group-title {
  font-family: var(--font-label);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-foreground-muted);
  margin-bottom: var(--space-3);
}

.mega-menu__tiles {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mega-menu__tile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-foreground);
  transition: background-color var(--motion-fast) var(--ease-out);
}

.mega-menu__tile:hover {
  background: rgba(245, 240, 232, 0.04);
}

.mega-menu__tile[aria-disabled="true"] {
  color: var(--color-foreground-muted);
  cursor: default;
}

.mega-menu__tile[aria-disabled="true"]:hover {
  background: none;
}

.mega-menu__facets {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.mega-menu__facet {
  font-family: var(--font-label);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-foreground-muted);
  border: 1px dashed var(--color-divider);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
}

.mega-menu__explore-link {
  display: inline-block;
  margin-top: var(--space-3);
}

/* --------------------------------------------------------------------------
   Menu mobile (accordion a piena pagina) — DESIGN_LANGUAGE.md §14
   -------------------------------------------------------------------------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--color-dark-0);
  padding: 96px var(--space-4) var(--space-6);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--motion-base) var(--ease-out);
}

.mobile-menu[data-open="true"] {
  transform: translateX(0);
}

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

.mobile-menu__list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.mobile-menu__link {
  font-family: var(--font-label);
  font-size: 22px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu__accordion-panel {
  display: none;
  padding: var(--space-3) 0 var(--space-4) var(--space-3);
}

.mobile-menu__accordion-panel[data-open="true"] {
  display: block;
}

.mobile-menu__accordion-item {
  display: block;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-foreground-muted);
  padding: var(--space-2) 0;
}

.mobile-menu__accordion-item[aria-disabled="true"] {
  color: rgba(154, 154, 144, 0.5);
}

.mobile-menu__cta {
  margin-top: var(--space-5);
  display: flex;
}

.mobile-menu__cta .btn {
  width: 100%;
}