/* ============================================
   DURAMASS — MOBILE.CSS
   Estilos responsive para tablets y móviles.
   Este archivo se carga DESPUÉS de style.css:

   <link rel="stylesheet" href="css/style.css">
   <link rel="stylesheet" href="css/mobile.css">

   No modifica style.css, solo lo sobreescribe
   en pantallas pequeñas.
   ============================================ */

/* ============================================
   MENÚ HAMBURGUESA
   Oculto en escritorio, visible desde 768px.
   ============================================ */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 210;
}
.hamburger-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
  margin: 0 auto;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.hamburger-btn.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger-btn.is-active span:nth-child(2) {
  opacity: 0;
}
.hamburger-btn.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-overlay {
  display: none;
}

/* ============================================
   TABLET (≤ 1024px)
   ============================================ */
@media (max-width: 1024px) {

  /* Banner hero: pasa de 3 columnas a 2 */
  section[style*="grid-template-columns"] {
    grid-template-columns: 1fr 1fr !important;
    grid-template-rows: 220px 220px 220px !important;
  }
  section[style*="grid-template-columns"] > div:nth-child(1) {
    grid-column: 1 / 3 !important;
    grid-row: 1 !important;
  }
  section[style*="grid-template-columns"] > div:nth-child(2) {
    grid-column: 1 / 3 !important;
    grid-row: 2 !important;
  }
  section[style*="grid-template-columns"] > div:nth-child(3) {
    grid-column: 1 !important;
    grid-row: 3 !important;
  }
  section[style*="grid-template-columns"] > div:nth-child(4) {
    grid-column: 2 !important;
    grid-row: 3 !important;
  }

  .products-grid,
  .popular-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   HEADER + MENÚ HAMBURGUESA (≤ 1024px)
   Se activa antes que el resto del layout móvil
   para que el nav nunca llegue a apretarse.
   ============================================ */
@media (max-width: 1024px) {

  .header-inner {
    padding: 12px 16px;
  }
  .logo img { height: 38px !important; }

  /* Oculta el nav normal y muestra el botón hamburguesa */
  .header-inner > nav#mainNav:not(.nav-open) {
    display: none;
  }
  .hamburger-btn { display: flex; }

  /* Menú desplegable: panel lateral que entra desde la derecha */
  nav#mainNav {
    display: flex;
    position: fixed;
    top: 0;
    right: -280px;
    width: 260px;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 90px 20px 20px;
    box-shadow: -4px 0 24px rgba(0,0,0,0.12);
    transition: right 0.3s ease;
    z-index: 200;
    overflow-y: auto;
  }
  nav#mainNav.nav-open {
    right: 0;
  }
  nav#mainNav a {
    width: 100%;
    text-align: left;
    padding: 12px 14px;
    font-size: 13px;
    border-radius: 10px;
  }

  /* Fondo oscuro detrás del menú.
     OJO: z-index debe quedar POR DEBAJO de 100 (el z-index del <header>
     en style.css). El header crea su propio stacking context, así que
     el nav (aunque tenga z-index:200 dentro del header) queda "atrapado"
     compitiendo como si valiera 100 desde afuera. Si el overlay vale más
     de 100, tapa al header entero (y al nav con él). */
  .nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 95;
  }
  .nav-overlay.is-active {
    opacity: 1;
    pointer-events: auto;
  }
}

/* ============================================
   MÓVIL GRANDE (≤ 768px)
   ============================================ */
@media (max-width: 768px) {

  section { padding: 40px 16px; }
  .wrap { padding: 0 16px; }

  /* ---------- HERO BANNER (inline styles) ---------- */
  section[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    grid-template-rows: none !important;
    padding: 12px !important;
    gap: 12px !important;
  }
  section[style*="grid-template-columns"] > div {
    grid-column: 1 !important;
    grid-row: auto !important;
    min-height: 280px !important;
  }
  section[style*="grid-template-columns"] h1 {
    font-size: 30px !important;
  }
  section[style*="grid-template-columns"] h2 {
    font-size: 32px !important;
  }
  section[style*="grid-template-columns"] h3 {
    font-size: 24px !important;
  }

  /* ---------- HERO (versión clásica comentada, por si se activa) ---------- */
  .hero { padding: 40px 16px; }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  .hero h1 { font-size: 30px; }
  .hero p { margin: 0 auto 24px; }
  .hero-btns { justify-content: center; }
  .hero-visual { justify-content: center; }

  /* ---------- TRUST BAR ---------- */
  .trust-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding-left: 8px;
  }

  /* ---------- SECTION HEADERS ---------- */
  .section-header h2 { font-size: 24px; }
  .section-header p { padding: 0 10px; }

  /* ---------- PRODUCT GRIDS ---------- */
  .products-grid,
  .popular-grid,
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .product-img { height: 130px; }
  .product-info h3 { font-size: 13px; }

  /* ---------- CATEGORÍAS ---------- */
  .cats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  /* ---------- PROMO BANNER ---------- */
  .promo-inner {
    flex-direction: column;
    text-align: center;
  }
  .promo-text h2 { font-size: 28px; }
  .promo-products {
    flex-wrap: wrap;
    justify-content: center;
  }
  .btn-promo { width: 100%; }

  /* ---------- QUIÉNES SOMOS ---------- */
  .about-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .about-visual { min-height: 260px; order: -1; }
  .about-content h2 { font-size: 24px; }
  .about-stats { grid-template-columns: 1fr 1fr; }

  /* ---------- SUSCRIPCIÓN ---------- */
  .subscribe-section h2 { font-size: 22px; }
  .subscribe-form { flex-direction: column; }
  .subscribe-form input,
  .btn-sub { width: 100%; min-width: 0; }
  .subscribe-icons {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  /* ---------- FOOTER ---------- */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: left;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   MÓVIL PEQUEÑO (≤ 480px)
   ============================================ */
@media (max-width: 480px) {

  section { padding: 32px 14px; }

  /* Banner hero: tipografías más compactas */
  section[style*="grid-template-columns"] h1 {
    font-size: 26px !important;
  }
  section[style*="grid-template-columns"] h2 {
    font-size: 26px !important;
  }
  section[style*="grid-template-columns"] > div {
    min-height: 240px !important;
    padding: 22px 18px !important;
  }

  /* Grids a una sola columna */
  .products-grid,
  .popular-grid,
  .benefits-grid,
  .about-stats {
    grid-template-columns: 1fr;
  }

  .cats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-img { height: 150px; }

  .section-header h2 { font-size: 22px; }

  .promo-text h2 { font-size: 24px; }

  nav a { font-size: 10px; padding: 6px 10px; }
}

/* Responsive: apila en móvil */
@media (max-width: 768px) {
  .promo-inner {
    flex-direction: column;
    text-align: center;
  }
  .promo-image {
    justify-content: center;
  }
}