/* ============================================================
 * premium-header-2026.css
 * Prosermat — FASE 1 / Sección 6 del UX/UI 2026
 * Topbar + header refinado + mega-menú + search bar.
 * Cargado DESPUÉS de premium-storefront.css → gana en cascada.
 *
 * Estrategia:
 *   - Usa :where() de baja especificidad cuando refina markup global.
 *   - Selectores propios (.topbar*, .nav-mega) sí pueden ser específicos.
 *   - Touch targets ≥48×48 en todas las superficies clickeables.
 *   - Variables propias --hdr2026-* para no chocar con --pm-* / --brand.
 * ============================================================ */

:root {
  --hdr2026-brand-600: var(--pm-brand, #1f7a4d);
  --hdr2026-brand-700: var(--pm-brand-deep, #0d3d24);
  --hdr2026-bg:        rgba(255, 255, 255, 0.95);
  --hdr2026-bg-scroll: rgba(255, 255, 255, 0.98);
  --hdr2026-border:    rgba(15, 23, 42, 0.08);
  --hdr2026-shadow:    0 4px 16px rgba(15, 23, 42, 0.06);
  --hdr2026-shadow-strong: 0 8px 24px rgba(15, 23, 42, 0.10);
  --hdr2026-ease:      cubic-bezier(.22,.9,.22,1);
  --hdr2026-touch-min: 48px;
}

/* -----------------------------------------------------------
 * 1 · TOPBAR (banda promo arriba del header)
 *     Sticky NO — sólo aparece arriba del header normal.
 * ----------------------------------------------------------- */
.topbar {
  background: var(--hdr2026-brand-600);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  line-height: 1.35;
  padding: 0.4rem 1rem;
  position: relative;
  z-index: 101;
}

.topbar__inner {
  max-width: var(--maxw, 1200px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.topbar__msg {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.95);
}

.topbar__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: rgba(255, 255, 255, 0.92);
}

.topbar__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.05);
  transition: background .18s var(--hdr2026-ease),
              border-color .18s var(--hdr2026-ease),
              transform .18s var(--hdr2026-ease);
  -webkit-tap-highlight-color: transparent;
}

.topbar__cta:hover,
.topbar__cta:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}

.topbar__cta:active { transform: translateY(1px); }

@media (max-width: 640px) {
  .topbar { font-size: 0.72rem; padding: 0.35rem 0.75rem; }
  .topbar__inner { gap: 0.65rem; }
  .topbar__cta { padding: 0.1rem 0.5rem; }
}

@media (max-width: 420px) {
  /* En pantallas chicas escondemos el CTA — el header tiene búsqueda y nav */
  .topbar__cta { display: none; }
}

/* -----------------------------------------------------------
 * 2 · HEADER refinado (sticky + glassmorphism)
 *     Override con :where() para no luchar con styles.css
 * ----------------------------------------------------------- */
:where(.site-header) {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--hdr2026-bg);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  backdrop-filter: blur(12px) saturate(160%);
  border-bottom: 1px solid var(--hdr2026-border);
  box-shadow: var(--hdr2026-shadow);
  transition: background .25s var(--hdr2026-ease),
              box-shadow .25s var(--hdr2026-ease);
}

/* El script existente añade .pm-scrolled. Mantenemos compat para .scrolled
   por si otra capa la usa (doble nombre, mismo efecto). */
.site-header.pm-scrolled,
.site-header.scrolled {
  background: var(--hdr2026-bg-scroll);
  box-shadow: var(--hdr2026-shadow-strong);
}

/* -----------------------------------------------------------
 * 3 · Touch targets ≥48×48
 * ----------------------------------------------------------- */
:where(.site-header .cart-btn,
       .site-header .account-btn,
       .site-header .search-toggle,
       .site-header .menu-toggle) {
  min-width: var(--hdr2026-touch-min);
  min-height: var(--hdr2026-touch-min);
}

:where(.site-header .nav-link) {
  min-height: var(--hdr2026-touch-min);
  display: inline-flex;
  align-items: center;
}

/* -----------------------------------------------------------
 * 4 · MEGA-MENÚ (.nav-mega) — dropdown 3 columnas
 *     El markup ya viene de layout.php (.nav-mega-wrap → .nav-mega).
 *     Aquí afinamos posicionamiento, columnas y animación.
 * ----------------------------------------------------------- */
.nav-mega-wrap {
  position: relative;
}

.nav-mega {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, -8px);
  margin-top: 8px;
  min-width: 640px;
  max-width: min(880px, calc(100vw - 32px));
  background: #fff;
  border: 1px solid var(--hdr2026-border);
  border-radius: 18px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.14),
              0 8px 16px rgba(15, 23, 42, 0.06);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .22s var(--hdr2026-ease),
              transform .22s var(--hdr2026-ease),
              visibility 0s linear .22s;
  z-index: 120;
}

.nav-mega-wrap:hover .nav-mega,
.nav-mega-wrap:focus-within .nav-mega {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
  transition: opacity .22s var(--hdr2026-ease),
              transform .22s var(--hdr2026-ease),
              visibility 0s linear 0s;
}

.nav-mega-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  padding: 1.5rem 1.5rem 1rem;
}

/* Si el markup llegara a tener 3 columnas, se expande automáticamente */
.nav-mega-inner:has(> .nav-mega-col:nth-child(3)) {
  grid-template-columns: 1fr 1fr 1fr;
}

.nav-mega-foot {
  border-top: 1px solid var(--hdr2026-border);
  padding: 0.75rem 1.5rem;
  background: #f8faf9;
  border-bottom-left-radius: 18px;
  border-bottom-right-radius: 18px;
}

@media (max-width: 960px) {
  /* En tablet/mobile el mega-menú no se muestra — usamos el drawer mobile */
  .nav-mega { display: none; }
}

/* -----------------------------------------------------------
 * 5 · SEARCH BAR refinada
 * ----------------------------------------------------------- */
:where(.gsearch-wrap) {
  position: relative;
}

:where(.gsearch-input),
.search-bar {
  border-radius: 999px;
  border: 1.5px solid var(--hdr2026-border);
  background: #f8faf9;
  padding-left: 2.5rem;
  transition: border-color .18s var(--hdr2026-ease),
              background .18s var(--hdr2026-ease),
              box-shadow .18s var(--hdr2026-ease);
  min-height: var(--hdr2026-touch-min);
}

:where(.gsearch-input:focus),
.search-bar:focus {
  border-color: var(--hdr2026-brand-600);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(31, 122, 77, 0.12);
  outline: none;
}

:where(.gsearch-icon) {
  pointer-events: none;
}

/* -----------------------------------------------------------
 * 6 · Caret del nav-link mega-menu — animación de rotación
 * ----------------------------------------------------------- */
.nav-mega-caret {
  transition: transform .22s var(--hdr2026-ease);
  margin-left: 4px;
}

.nav-mega-wrap:hover .nav-mega-caret,
.nav-mega-wrap:focus-within .nav-mega-caret {
  transform: rotate(180deg);
}

/* -----------------------------------------------------------
 * 7 · Reduced motion — sin transforms ni transiciones largas
 * ----------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  :where(.site-header),
  .topbar__cta,
  .nav-mega,
  .nav-mega-caret,
  :where(.gsearch-input) {
    transition: none !important;
  }
  .nav-mega-wrap:hover .nav-mega,
  .nav-mega-wrap:focus-within .nav-mega {
    transform: translate(-50%, 0);
  }
}