/* ══════════════════════════════════════
   FERRENOVA — Header Premium 2026
   3 capas: Topbar + Nav + Menu Bar
   ══════════════════════════════════════ */

/* ─────────────────────────────────────
   TOP BAR
   ───────────────────────────────────── */
.fn-header__topbar {
  background: linear-gradient(135deg, var(--fn-gris-900) 0%, #1a2332 100%);
  color: var(--fn-gris-400);
  font-size: 0.78rem;
  letter-spacing: 0.01em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.fn-header__topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 36px;
  gap: var(--fn-sp-lg);
}

.fn-header__topbar-left,
.fn-header__topbar-right {
  display: flex;
  align-items: center;
  gap: var(--fn-sp-sm);
}

.fn-header__topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--fn-gris-400);
  transition: color var(--fn-trans-fast);
  white-space: nowrap;
}

a.fn-header__topbar-item:hover {
  color: var(--fn-blanco);
}

.fn-header__topbar-item--static {
  cursor: default;
}

.fn-header__topbar-item svg {
  opacity: 0.7;
  flex-shrink: 0;
}

.fn-header__topbar-sep {
  width: 1px;
  height: 14px;
  background: rgba(255,255,255,0.12);
  flex-shrink: 0;
}

.fn-header__topbar-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--fn-radio-sm);
  color: var(--fn-gris-400);
  transition: all var(--fn-trans-fast);
}

.fn-header__topbar-social:hover {
  color: var(--fn-blanco);
  background: rgba(255,255,255,0.08);
}

.fn-header__topbar-item--cuenta {
  color: var(--fn-gris-300);
  font-weight: var(--fn-fw-medium);
}

.fn-header__topbar-item--cuenta:hover {
  color: var(--fn-secundario);
}


/* ─────────────────────────────────────
   NAV PRINCIPAL
   ───────────────────────────────────── */
.fn-header__nav {
  background: var(--fn-blanco);
  position: sticky;
  top: 0;
  z-index: var(--fn-z-sticky);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  border-bottom: 1px solid transparent;
}

.fn-header__nav.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: rgba(0,0,0,0.06);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
}

.fn-header__nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--fn-sp-xl);
}

.fn-header__nav.scrolled .fn-header__nav-inner {
  height: 60px;
}


/* ── Logo ── */
.fn-header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  transition: transform var(--fn-trans-fast);
}

.fn-header__logo img {
  height: 46px;
  width: auto;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.fn-header__logo:hover {
  transform: scale(1.02);
}

.fn-header__nav.scrolled .fn-header__logo img {
  height: 38px;
}


/* ── Buscador inline ── */
.fn-header__search {
  flex: 1;
  max-width: 520px;
  margin: 0 var(--fn-sp-lg);
}

.fn-header__search-form {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--fn-fondo);
  border: 2px solid var(--fn-gris-200);
  border-radius: var(--fn-radio-full);
  overflow: hidden;
  transition: all var(--fn-trans-normal);
}

.fn-header__search-form:focus-within {
  border-color: var(--fn-primario);
  background: var(--fn-blanco);
  box-shadow: 0 0 0 4px rgba(36,111,132,0.1);
}

.fn-header__search-icon {
  position: absolute;
  left: 16px;
  color: var(--fn-gris-400);
  pointer-events: none;
  flex-shrink: 0;
  transition: color var(--fn-trans-fast);
}

.fn-header__search-form:focus-within .fn-header__search-icon {
  color: var(--fn-primario);
}

.fn-header__search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 10px 10px 10px 44px;
  font-size: 0.88rem;
  font-family: var(--fn-fuente-cuerpo);
  color: var(--fn-texto);
  outline: none;
  min-width: 0;
}

.fn-header__search-input::placeholder {
  color: var(--fn-gris-400);
  font-size: 0.85rem;
}

.fn-header__search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: 2px;
  background: var(--fn-primario);
  color: var(--fn-blanco);
  border-radius: var(--fn-radio-full);
  flex-shrink: 0;
  transition: all var(--fn-trans-fast);
}

.fn-header__search-btn:hover {
  background: var(--fn-primario-hover);
  transform: scale(1.05);
}


/* ── Action Buttons ── */
.fn-header__actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.fn-header__action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--fn-radio-lg);
  color: var(--fn-gris-600);
  position: relative;
  transition: all var(--fn-trans-fast);
}

.fn-header__action-btn:hover {
  color: var(--fn-primario);
  background: var(--fn-primario-ultra-light);
}

.fn-header__action-btn--search-mobile {
  display: none;
}

/* ── Cart ── */
.fn-header__cart-btn:hover {
  color: var(--fn-secundario);
  background: rgba(255,116,61,0.08);
}

.fn-header__cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--fn-secundario);
  color: var(--fn-blanco);
  font-size: 10px;
  font-weight: var(--fn-fw-bold);
  border-radius: var(--fn-radio-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 2px 6px rgba(255,116,61,0.4);
  animation: fn-badge-pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes fn-badge-pop {
  0% { transform: scale(0); }
  100% { transform: scale(1); }
}


/* ── Hamburger ── */
.fn-header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--fn-radio-lg);
  transition: background var(--fn-trans-fast);
}

.fn-header__hamburger:hover {
  background: var(--fn-primario-ultra-light);
}

.fn-header__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fn-gris-700);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.fn-header__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.fn-header__hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.fn-header__hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ─────────────────────────────────────
   MENU BAR (3ra capa)
   ───────────────────────────────────── */
.fn-header__menu-bar {
  background: var(--fn-primario);
  position: sticky;
  top: 72px;
  z-index: calc(var(--fn-z-sticky) - 1);
  transition: top 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.fn-header__nav.scrolled ~ .fn-header__menu-bar {
  top: 60px;
}

.fn-header__menu-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.fn-header__menu {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.fn-header__menu-item {
  position: relative;
}

.fn-header__menu-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 14px 20px;
  font-family: var(--fn-fuente-titulo);
  font-size: 0.88rem;
  font-weight: var(--fn-fw-semibold);
  color: rgba(255,255,255,0.88);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
  position: relative;
  transition: all var(--fn-trans-fast);
}

.fn-header__menu-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--fn-secundario);
  border-radius: 3px 3px 0 0;
  transform: translateX(-50%);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fn-header__menu-link:hover {
  color: var(--fn-blanco);
  background: rgba(255,255,255,0.08);
}

.fn-header__menu-link:hover::after {
  width: 60%;
}

.fn-header__menu-link svg {
  transition: transform var(--fn-trans-fast);
  opacity: 0.7;
}

.fn-header__menu-item--has-mega:hover .fn-header__menu-link svg {
  transform: rotate(180deg);
}


/* ── Mega Dropdown ── */
.fn-header__mega {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  min-width: 580px;
  background: var(--fn-blanco);
  border-radius: var(--fn-radio-xl);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 0 0 1px rgba(0,0,0,0.04);
  padding: var(--fn-sp-lg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: var(--fn-z-dropdown);
}

.fn-header__menu-item--has-mega:hover .fn-header__mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.fn-header__mega-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--fn-sp-sm);
}

.fn-header__mega-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: var(--fn-sp-md) var(--fn-sp-sm);
  border-radius: var(--fn-radio-lg);
  text-align: center;
  transition: all var(--fn-trans-fast);
}

.fn-header__mega-card:hover {
  background: var(--fn-primario-ultra-light);
  transform: translateY(-2px);
}

.fn-header__mega-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--fn-radio-lg);
  background: var(--fn-fondo);
  color: var(--fn-primario);
  transition: all var(--fn-trans-fast);
}

.fn-header__mega-card:hover .fn-header__mega-card-icon {
  background: var(--fn-primario);
  color: var(--fn-blanco);
  box-shadow: 0 4px 12px rgba(36,111,132,0.3);
}

.fn-header__mega-card span {
  font-size: 0.8rem;
  font-weight: var(--fn-fw-medium);
  color: var(--fn-gris-700);
  line-height: 1.3;
}

.fn-header__mega-card:hover span {
  color: var(--fn-primario);
}

.fn-header__mega-card--all {
  grid-column: 1 / -1;
  flex-direction: row;
  padding: var(--fn-sp-sm) var(--fn-sp-md);
  background: linear-gradient(135deg, var(--fn-primario-ultra-light) 0%, rgba(255,116,61,0.06) 100%);
  border: 1px dashed var(--fn-borde);
  margin-bottom: var(--fn-sp-xs);
}

.fn-header__mega-card--all .fn-header__mega-card-icon {
  width: 36px;
  height: 36px;
  background: var(--fn-primario);
  color: var(--fn-blanco);
}

.fn-header__mega-card--all span {
  font-weight: var(--fn-fw-semibold);
  color: var(--fn-primario);
  font-size: 0.88rem;
}

.fn-header__mega-card--all:hover {
  background: var(--fn-primario);
  border-color: transparent;
}

.fn-header__mega-card--all:hover span {
  color: var(--fn-blanco);
}

.fn-header__mega-card--all:hover .fn-header__mega-card-icon {
  background: rgba(255,255,255,0.2);
  color: var(--fn-blanco);
  box-shadow: none;
}


/* ── WhatsApp CTA en menu bar ── */
.fn-header__menu-cta {
  display: flex;
  align-items: center;
}

.fn-header__whatsapp-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: rgba(255,255,255,0.12);
  color: var(--fn-blanco);
  font-size: 0.82rem;
  font-weight: var(--fn-fw-semibold);
  border-radius: var(--fn-radio-full);
  border: 1px solid rgba(255,255,255,0.2);
  transition: all var(--fn-trans-fast);
  white-space: nowrap;
}

.fn-header__whatsapp-link:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.35);
  transform: translateY(-1px);
}


/* ─────────────────────────────────────
   BUSCADOR MOBILE
   ───────────────────────────────────── */
.fn-header__search-mobile {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--fn-blanco);
  z-index: calc(var(--fn-z-sticky) + 10);
  padding: var(--fn-sp-md) 0;
  box-shadow: var(--fn-sombra-xl);
  transform: translateY(-100%);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fn-header__search-mobile.active {
  transform: translateY(0);
  opacity: 1;
}

.fn-header__search-mobile-form {
  display: flex;
  align-items: center;
  gap: var(--fn-sp-xs);
}

.fn-header__search-mobile-input {
  flex: 1;
  padding: 12px 18px;
  border: 2px solid var(--fn-borde);
  border-radius: var(--fn-radio-full);
  font-size: var(--fn-fs-base);
  font-family: var(--fn-fuente-cuerpo);
  color: var(--fn-texto);
  background: var(--fn-fondo);
  outline: none;
  transition: border-color var(--fn-trans-fast);
}

.fn-header__search-mobile-input:focus {
  border-color: var(--fn-primario);
  background: var(--fn-blanco);
}

.fn-header__search-mobile-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--fn-primario);
  color: var(--fn-blanco);
  border-radius: var(--fn-radio-full);
  flex-shrink: 0;
}

.fn-header__search-mobile-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--fn-gris-500);
  border-radius: var(--fn-radio-full);
  flex-shrink: 0;
  transition: all var(--fn-trans-fast);
}

.fn-header__search-mobile-close:hover {
  background: var(--fn-gris-100);
  color: var(--fn-gris-700);
}


/* ── Overlay ── */
.fn-header__overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: calc(var(--fn-z-sticky) - 2);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.fn-header__overlay.active {
  display: block;
  animation: fn-fade-in 0.25s ease;
}

@keyframes fn-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}


/* ════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════ */

@media (max-width: 1024px) {

  .fn-header__hamburger {
    display: flex;
  }

  .fn-header__search {
    display: none;
  }

  .fn-header__action-btn--search-mobile {
    display: flex;
  }

  .fn-header__action-btn--account {
    display: none;
  }

  .fn-header__menu-bar {
    display: none;
  }

  /* Mobile nav drawer */
  .fn-header__menu {
    position: fixed;
    top: 0;
    right: -340px;
    width: 320px;
    height: 100vh;
    height: 100dvh;
    background: var(--fn-blanco);
    flex-direction: column;
    align-items: stretch;
    padding: var(--fn-sp-3xl) var(--fn-sp-lg) var(--fn-sp-xl);
    z-index: calc(var(--fn-z-sticky) + 5);
    box-shadow: -8px 0 30px rgba(0,0,0,0.15);
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    gap: 2px;
  }

  .fn-header__menu.active {
    right: 0;
  }

  .fn-header__menu-link {
    padding: 14px 16px;
    font-size: 0.95rem;
    color: var(--fn-gris-700);
    text-transform: none;
    letter-spacing: 0;
    border-radius: var(--fn-radio-md);
  }

  .fn-header__menu-link::after {
    display: none;
  }

  .fn-header__menu-link:hover {
    background: var(--fn-primario-ultra-light);
    color: var(--fn-primario);
  }

  /* Mega menu mobile */
  .fn-header__mega {
    position: static;
    transform: none;
    min-width: 0;
    box-shadow: none;
    border-radius: var(--fn-radio-md);
    padding: var(--fn-sp-sm);
    background: var(--fn-fondo);
    display: none;
    opacity: 1;
    visibility: visible;
    margin-top: 4px;
  }

  .fn-header__menu-item--has-mega.open .fn-header__mega {
    display: block;
  }

  .fn-header__mega-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--fn-sp-xs);
  }

  .fn-header__mega-card {
    padding: var(--fn-sp-sm);
  }

  .fn-header__mega-card--all {
    grid-column: 1 / -1;
  }

  .fn-header__mega-card-icon {
    width: 36px;
    height: 36px;
  }

  /* Mobile footer in drawer */
  .fn-header__menu-cta {
    margin-top: auto;
    padding-top: var(--fn-sp-lg);
    border-top: 1px solid var(--fn-borde);
  }

  .fn-header__whatsapp-link {
    width: 100%;
    justify-content: center;
    padding: 12px;
    background: #25d366;
    color: var(--fn-blanco);
    border: none;
    border-radius: var(--fn-radio-lg);
    font-size: 0.9rem;
  }

  .fn-header__whatsapp-link:hover {
    background: #1fb855;
    transform: none;
  }
}


@media (max-width: 640px) {

  .fn-header__topbar {
    display: none;
  }

  .fn-header__nav-inner {
    height: 60px;
  }

  .fn-header__nav.scrolled .fn-header__nav-inner {
    height: 56px;
  }

  .fn-header__logo img {
    height: 36px;
  }

  .fn-header__actions {
    gap: 2px;
  }

  .fn-header__action-btn {
    width: 40px;
    height: 40px;
  }
}