/* ============================================================
   HEADER — Tu Cajita
   Sticky wrapper (header + nav), logo centrado, iconos,
   overlay de búsqueda.
   ============================================================ */

/* --- Sticky wrapper que abraza header + nav --- */

.sticky-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

/* --- Header principal: 3 columnas --- */

.site-header {
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 72px;
  gap: var(--space-4);
}

.header-left {
  display: flex;
  align-items: center;
}

.header-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
}

.header-logo:hover {
  opacity: 0.82;
}

.header-logo img {
  max-height: 52px;
  width: auto;
  display: block;
  object-fit: contain;
}

.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-1);
}

/* --- Botones de icono (compartidos por header e .icon-btn general) --- */

.header-icon-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
  flex-shrink: 0;
}

.header-icon-btn:hover {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
}

/* --- Badge del carrito --- */

.cart-btn {
  position: relative;
}

.cart-badge {
  position: absolute;
  top: 4px;
  right: 3px;
  min-width: 16px;
  height: 16px;
  padding: 0 3px;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  display: none;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-white);
  pointer-events: none;
}

.cart-badge.visible {
  display: flex;
}

/* --- Overlay de búsqueda --- */

.search-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(251, 220, 231, 0.97);
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: var(--space-24);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(4px);
}

.search-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.search-form {
  display: flex;
  align-items: center;
  width: min(600px, 90vw);
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-5);
  box-shadow: var(--shadow-lg);
  gap: var(--space-3);
}

.search-icon-decorator {
  color: var(--color-text-light);
  flex-shrink: 0;
  display: flex;
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  font-family: var(--font-sans);
  font-size: var(--font-size-lg);
  color: var(--color-text);
  background: transparent;
  min-width: 0;
}

.search-input::placeholder {
  color: var(--color-text-light);
}

.btn-search-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-light);
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--transition-fast),
              background-color var(--transition-fast);
}

.btn-search-close:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-subtle);
}

.search-hint {
  margin-top: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  text-align: center;
}

.search-hint kbd {
  display: inline-block;
  padding: 1px 7px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  color: var(--color-text);
}

/* --- Responsive --- */

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
    gap: var(--space-2);
  }

  .header-logo img {
    max-height: 42px;
  }

  .search-overlay {
    padding-top: var(--space-16);
  }
}