/* =========================================
   RUBICAT SILICA — Estilos principales
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@700;800;900&family=Barlow:wght@400;500;600&display=swap');

:root {
  --naranja: #E8431A;
  --amarillo: #F5A623;
  --crema: #FAF0DC;
  --negro: #1A1A1A;
  --blanco: #FFFFFF;
  --gris-claro: #F4F4F0;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Barlow', sans-serif;
  background-color: var(--blanco);
  color: var(--negro);
  overflow-x: hidden;
}

/* =========================================
   NAVBAR
   ========================================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: 72px;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.navbar.scrolled {
  border-bottom-color: var(--naranja);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.navbar__logo img {
  height: 48px;
  width: auto;
  display: block;
}

@media (min-width: 769px) {
  .navbar__logo img {
    height: 72px;
  }
}

.navbar__links {
  display: flex;
  list-style: none;
  gap: 36px;
  align-items: center;
}

.navbar__links a {
  text-decoration: none;
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--negro);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  transition: color 0.2s;
}

.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 100%;
  height: 2px;
  background: var(--naranja);
  transition: right 0.25s ease;
}

.navbar__links a:hover {
  color: var(--naranja);
}

.navbar__links a:hover::after {
  right: 0;
}

.navbar__cta {
  background: var(--naranja) !important;
  color: var(--blanco) !important;
  padding: 10px 22px !important;
  border-radius: 4px !important;
  font-weight: 700 !important;
  transition: background 0.2s, transform 0.15s !important;
}

.navbar__cta:hover {
  background: #c8360f !important;
  transform: translateY(-1px);
}

.navbar__cta::after {
  display: none !important;
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
}

.navbar__hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--negro);
  transition: all 0.3s;
}

/* =========================================
   HERO / BANNER
   ========================================= */

.hero {
  margin-top: 72px;
  width: 100%;
  overflow: hidden;
}

.hero__banner {
  width: 100%;
  display: block;
}

.hero__banner--desktop {
  display: block;
}

.hero__banner--mobile {
  display: none;
}

/* =========================================
   PRODUCTOS
   ========================================= */

.productos {
  padding: 80px 5% 60px;
  background: var(--blanco);
}

.section-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  text-align: center;
  margin-bottom: 16px;
  color: var(--negro);
}

.section-title span {
  color: var(--naranja);
}

.section-subtitle {
  text-align: center;
  font-size: 1.05rem;
  color: #666;
  margin-bottom: 56px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.productos__grid {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 900px;
  margin: 0 auto;
}

/* Card de producto */
.producto-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.10);
  transition: transform 0.3s, box-shadow 0.3s;
}

.producto-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 56px rgba(0,0,0,0.15);
}

.producto-card--aglutinante {
  flex-direction: row-reverse;
}

.producto-card__imagen {
  position: relative;
  overflow: hidden;
}

.producto-card:hover .producto-card__imagen .producto-img--desktop {
  transform: scale(1.04);
}

.producto-card__info {
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

.producto-card--silica .producto-card__info {
  background: var(--naranja);
  color: var(--blanco);
}

.producto-card--aglutinante .producto-card__info {
  background: var(--amarillo);
  color: var(--negro);
}

.producto-card__tag {
  font-family: 'Barlow', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.75;
}

.producto-card__nombre {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 1;
  letter-spacing: 0.02em;
}

.producto-card__descripcion {
  font-size: 0.95rem;
  line-height: 1.6;
  opacity: 0.9;
}

.producto-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.producto-card__features li {
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.producto-card__features li::before {
  content: '✓';
  font-weight: 900;
  font-size: 0.8rem;
}

.producto-card--aglutinante .producto-card__info .producto-card__tag,
.producto-card--aglutinante .producto-card__info .producto-card__nombre,
.producto-card--aglutinante .producto-card__info .producto-card__descripcion,
.producto-card--aglutinante .producto-card__info .producto-card__features li {
  color: var(--negro);
}

/* Orden visual: imagen a la derecha en card aglutinante */
.producto-card--aglutinante .producto-card__info {
  order: 1;
}
.producto-card--aglutinante .producto-card__imagen {
  order: 2;
}

/* =========================================
   BOTÓN MERCADOLIBRE
   ========================================= */

.comprar-section {
  text-align: center;
  padding: 40px 5% 80px;
  background: var(--blanco);
}

.btn-ml {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #FFE600;
  color: #333333;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
  padding: 18px 44px;
  border-radius: 8px;
  border: 3px solid #333;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.btn-ml:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.18);
  background: #ffe000;
}

.btn-ml svg {
  flex-shrink: 0;
}

.comprar-label {
  font-family: 'Barlow', sans-serif;
  font-size: 0.9rem;
  color: #888;
  margin-top: 14px;
  font-weight: 500;
}

/* =========================================
   SOBRE NOSOTROS
   ========================================= */

.nosotros {
  background: var(--negro);
  color: var(--blanco);
  padding: 80px 8%;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
  gap: 60px;
}

/* Wrapper para que el fondo ocupe todo el ancho */
.nosotros-wrapper {
  background: var(--negro);
}

.nosotros__texto {
  max-width: 560px;
}

.nosotros__texto .section-title {
  text-align: left;
  color: var(--blanco);
  margin-bottom: 24px;
}

.nosotros__texto p {
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.8);
  margin-bottom: 16px;
}

.nosotros__logo {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}

.nosotros__logo img {
  width: 100%;
  max-width: 300px;
  opacity: 0.85;
  filter: brightness(0) invert(1);
}

/* Desktop/mobile product images — en desktop solo se ve desktop */
.producto-img--mobile {
  display: none;
}

.producto-img--desktop {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.5s ease;
}

/* =========================================
   FOOTER
   ========================================= */

.footer {
  background: #111;
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 32px 5%;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.footer a {
  color: var(--naranja);
  text-decoration: none;
}

/* =========================================
   RESPONSIVE
   ========================================= */

@media (max-width: 768px) {
  .navbar__links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--blanco);
    flex-direction: column;
    padding: 20px 5%;
    gap: 0;
    border-bottom: 2px solid var(--naranja);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  }

  .navbar__links.open {
    display: flex;
  }

  .navbar__links li {
    width: 100%;
  }

  .navbar__links a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid rgba(0,0,0,0.07);
    font-size: 1rem;
  }

  .navbar__links a::after {
    display: none;
  }

  .navbar__cta {
    margin-top: 8px;
    text-align: center;
    border-radius: 4px !important;
  }

  .navbar__hamburger {
    display: flex;
  }

  .hero__banner--desktop {
    display: none;
  }

  .hero__banner--mobile {
    display: block;
  }

  /* Cards mobile: columna única */
  .producto-card {
    grid-template-columns: 1fr;
  }

  /* El div imagen en mobile toma el mismo fondo que el info de su card */
  .producto-card--silica .producto-card__imagen {
    background: var(--naranja);
  }

  .producto-card--aglutinante .producto-card__imagen {
    background: var(--amarillo);
  }

  /* Imagen desktop oculta, mobile visible y centrada sin recorte */
  .producto-img--desktop {
    display: none;
  }

  .producto-img--mobile {
    display: block;
    width: 85%;
    max-width: 300px;
    height: auto;
    object-fit: contain;
    margin: 20px auto;
  }

  .producto-card--aglutinante .producto-card__info {
    order: 2;
  }
  .producto-card--aglutinante .producto-card__imagen {
    order: 1;
  }

  .producto-card__info {
    padding: 28px 24px;
  }

  /* Nosotros: columna en mobile */
  .nosotros {
    flex-direction: column;
    padding: 60px 5%;
    gap: 40px;
    text-align: center;
  }

  .nosotros__texto .section-title {
    text-align: center;
  }
}