/* ==========================================================================
   RODAMIENTOS CHACABUCO - MODERN INDUSTRIAL WEB DESIGN (2025 EDITION)
   ========================================================================== */

:root {
  --bg-dark: #0b0f19;
  --bg-card: #131b2e;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --primary: #e11d48;       /* Rojo industrial Chacabuco */
  --primary-dark: #be123c;
  --primary-glow: rgba(225, 29, 72, 0.25);
  --secondary: #1e3a8a;     /* Azul industrial SKF/Chacabuco */
  --accent: #f59e0b;        /* Ámbar industrial Timken */
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #f1f5f9;
  --text-gray: #94a3b8;
  --border-light: #e2e8f0;
  --border-dark: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, 0.16);
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, .brand-font {
  font-family: 'Outfit', 'Inter', sans-serif;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   TOP BAR
   ========================================================================== */
.topbar {
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-size: 0.85rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-dark);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #cbd5e1;
}

.topbar-item i {
  color: var(--primary);
  font-size: 0.9rem;
}

.topbar-item:hover {
  color: #ffffff;
}

.badge-express {
  background: linear-gradient(135deg, var(--primary), #be123c);
  color: #fff;
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid var(--border-light);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 82px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-wrap img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background-color: var(--primary);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
}

/* ==========================================================================
   HERO SECTION & SLIDER
   ========================================================================== */
.hero {
  position: relative;
  background: radial-gradient(circle at 80% 20%, #1e293b 0%, #0b0f19 75%);
  color: #ffffff;
  padding: 72px 0 84px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(225, 29, 72, 0.15);
  border: 1px solid rgba(225, 29, 72, 0.4);
  color: #fda4af;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: #ffffff;
}

.hero-title span {
  background: linear-gradient(90deg, #ff4d6d, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: #cbd5e1;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 10px 25px -5px rgba(225, 29, 72, 0.5);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #16a34a;
  color: #ffffff;
  box-shadow: 0 10px 25px -5px rgba(22, 163, 74, 0.4);
}

.btn-whatsapp:hover {
  background: #15803d;
  transform: translateY(-2px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-2px);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-item strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: #ffffff;
  font-family: 'Outfit', sans-serif;
}

.stat-item span {
  font-size: 0.85rem;
  color: #94a3b8;
}

/* Showcase Carousel */
.hero-showcase {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  position: relative;
  border: 4px solid rgba(255, 255, 255, 0.15);
}

.showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.showcase-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.slider-viewport {
  position: relative;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #ffffff;
  border-radius: var(--radius-md);
}

.slide-item {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.6s ease, transform 0.6s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.slide-item.active {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

.slide-item img {
  max-height: 210px;
  width: auto;
  object-fit: contain;
}

.slide-caption {
  margin-top: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
}

.slider-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
}

.slider-dots {
  display: flex;
  gap: 8px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #cbd5e1;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.slider-dot.active {
  width: 28px;
  background: var(--primary);
}

.slider-arrows {
  display: flex;
  gap: 8px;
}

.slider-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  background: var(--bg-light);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.slider-btn:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* ==========================================================================
   BRANDS RIBBON
   ========================================================================== */
.brands-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border-light);
  padding: 28px 0;
}

.brands-bar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.brands-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.brands-strip-img {
  max-width: 920px;
  width: 100%;
  filter: contrast(1.05);
}

/* ==========================================================================
   SECTION HEADINGS
   ========================================================================== */
.section {
  padding: 88px 0;
}

.section-white {
  background-color: var(--bg-white);
}

.section-dark {
  background-color: var(--bg-dark);
  color: #ffffff;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  background: rgba(225, 29, 72, 0.08);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.85rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 14px;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.section-dark .section-subtitle {
  color: #94a3b8;
}

/* ==========================================================================
   3 FEATURED PILLARS (2020-2025 HOME CARDS)
   ========================================================================== */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.pillar-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(225, 29, 72, 0.3);
}

.pillar-img-wrap {
  height: 150px;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.pillar-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.pillar-card:hover .pillar-img-wrap img {
  transform: scale(1.06);
}

.pillar-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.pillar-icon-badge {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-top: -50px;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
  box-shadow: 0 8px 16px rgba(225, 29, 72, 0.35);
}

.pillar-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-main);
}

.pillar-text {
  color: var(--text-muted);
  font-size: 0.96rem;
  margin-bottom: 20px;
  flex: 1;
}

.pillar-link {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pillar-link:hover {
  gap: 10px;
}

/* ==========================================================================
   EMPRESA (HISTORIA & LOCAL VERGARA 19)
   ========================================================================== */
.empresa-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 52px;
  align-items: center;
}

.empresa-photo-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 6px solid #ffffff;
}

.empresa-photo-card img {
  width: 100%;
  height: auto;
  display: block;
}

.empresa-photo-caption {
  background: var(--bg-dark);
  color: #ffffff;
  padding: 16px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

.empresa-content h3 {
  font-size: 1.9rem;
  margin-bottom: 18px;
  color: var(--text-main);
}

.empresa-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.empresa-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.highlight-box {
  background: var(--bg-light);
  padding: 18px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
}

.highlight-box h4 {
  font-size: 1rem;
  margin-bottom: 4px;
  color: var(--text-main);
}

.highlight-box p {
  font-size: 0.88rem;
  margin: 0;
  color: var(--text-muted);
}

/* ==========================================================================
   PRODUCTOS, APLICACIONES & MARCAS
   ========================================================================== */
.areas-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  margin-bottom: 52px;
}

.area-card {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: center;
  transition: var(--transition);
}

.area-card:hover {
  background: var(--bg-dark);
  color: #ffffff;
  transform: translateY(-4px);
  border-color: var(--bg-dark);
}

.area-card i {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.area-card h4 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.area-card p {
  font-size: 0.83rem;
  color: var(--text-muted);
}

.area-card:hover p {
  color: #cbd5e1;
}

/* Interactive Tabs for Catalogo */
.catalog-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.tab-btn {
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid var(--border-light);
  background: var(--bg-light);
  color: var(--text-main);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 6px 16px var(--primary-glow);
}

.tab-panel {
  display: none;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border-light);
}

.tab-panel.active {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
  align-items: center;
  animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.brand-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.brand-pill {
  background: #ffffff;
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--secondary);
  box-shadow: var(--shadow-sm);
}

.tab-image-box {
  background: #ffffff;
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  justify-content: center;
  align-items: center;
}

.featured-products-row {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.insumo-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--shadow-sm);
}

.insumo-card img {
  width: 96px;
  height: 96px;
  object-fit: contain;
  background: var(--bg-light);
  padding: 8px;
  border-radius: 10px;
}

/* ==========================================================================
   DESPACHO EXPRESS & REGIONES
   ========================================================================== */
.despacho-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.shipping-methods {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0;
}

.ship-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
}

.ship-card i {
  font-size: 1.8rem;
  color: var(--accent);
  margin-bottom: 10px;
}

.ship-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.ship-card p {
  font-size: 0.82rem;
  color: #94a3b8;
}

.despacho-callout {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
}

.despacho-callout img {
  height: 120px;
  margin: 0 auto 20px;
  background: #ffffff;
  padding: 12px;
  border-radius: 16px;
}

.despacho-phone-big {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
  margin: 12px 0 20px;
  font-family: 'Outfit', sans-serif;
}

/* ==========================================================================
   CONTACTO & UBICACIÓN
   ========================================================================== */
.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
}

.contact-info-card {
  background: var(--bg-dark);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin: 28px 0;
}

.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(225, 29, 72, 0.2);
  color: #fb7185;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.contact-row h4 {
  font-size: 0.9rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 3px;
}

.contact-row p, .contact-row a {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
}

.contact-row a:hover {
  color: var(--accent);
}

.payment-box {
  background: #ffffff;
  padding: 14px;
  border-radius: var(--radius-md);
  text-align: center;
}

.payment-box span {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.contact-form-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  background: var(--bg-light);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.map-container {
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  height: 380px;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ==========================================================================
   FOOTER & FLOATING WHATSAPP
   ========================================================================== */
.footer {
  background: #060911;
  color: #94a3b8;
  padding: 48px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
}

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  background: #25d366;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 12px 28px rgba(37, 211, 102, 0.45);
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: translateY(-3px) scale(1.02);
  background: #1ebe57;
}

.whatsapp-float i {
  font-size: 1.5rem;
}

/* ==========================================================================
   MOBILE STICKY BOTTOM BAR & BACKDROP
   ========================================================================== */
.mobile-bottom-bar {
  display: none;
}

.mobile-nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(11, 15, 25, 0.6);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-nav-backdrop.open {
  display: block;
  opacity: 1;
}

/* ==========================================================================
   RESPONSIVE DESIGN (TABLETS & MOBILE PHONES)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid,
  .empresa-grid,
  .despacho-grid,
  .contacto-grid,
  .tab-panel.active {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .pillars-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .featured-products-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: 72px;
  }

  body {
    padding-bottom: 72px; /* Espacio para la barra fija inferior móvil */
  }

  .container {
    padding: 0 16px;
  }

  /* Topbar compacto en móvil */
  .topbar {
    padding: 6px 0;
    font-size: 0.76rem;
  }

  .topbar-left {
    display: none; /* Ocultar correos largos arriba para no saturar la pantalla del teléfono */
  }

  .topbar-right {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }

  .topbar-right .topbar-item:nth-child(2) {
    display: none;
  }

  /* Header móvil */
  .header-inner {
    height: 68px;
  }

  .logo-wrap img {
    height: 40px;
  }

  .mobile-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--bg-light);
    border: 1px solid var(--border-light);
    font-size: 1.35rem;
    z-index: 1002;
  }

  .nav-menu {
    position: fixed;
    top: 68px;
    left: 12px;
    right: 12px;
    background: #ffffff;
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 8px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-light);
    transform: translateY(-130%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
    z-index: 1001;
  }

  .nav-menu.open {
    transform: translateY(8px);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 1rem;
  }

  .nav-link:hover, .nav-link.active {
    background: rgba(225, 29, 72, 0.07);
  }

  .nav-link::after {
    display: none;
  }

  .nav-cta {
    justify-content: center;
    padding: 14px;
    margin-top: 6px;
    font-size: 1rem;
  }

  /* Hero adaptado a teléfono */
  .hero {
    padding: 36px 0 48px;
  }

  .hero-badge {
    font-size: 0.78rem;
    padding: 5px 12px;
    margin-bottom: 14px;
  }

  .hero-title {
    font-size: 2rem;
    line-height: 1.18;
    margin-bottom: 14px;
  }

  .hero-desc {
    font-size: 0.96rem;
    margin-bottom: 24px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
  }

  .hero-actions .btn {
    width: 100%;
    padding: 14px 20px;
    font-size: 0.95rem;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding-top: 20px;
    text-align: center;
  }

  .stat-item strong {
    font-size: 1.25rem;
  }

  .stat-item span {
    font-size: 0.74rem;
    line-height: 1.2;
    display: block;
  }

  .hero-showcase {
    padding: 14px;
  }

  .slider-viewport {
    height: 200px;
  }

  .slide-item img {
    max-height: 150px;
  }

  .slide-caption {
    font-size: 0.8rem;
  }

  /* Secciones generales */
  .section {
    padding: 52px 0;
  }

  .section-header {
    margin-bottom: 32px;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .section-subtitle {
    font-size: 0.94rem;
  }

  /* Tarjetas y grillas */
  .pillar-body {
    padding: 22px 18px;
  }

  .empresa-photo-caption {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    font-size: 0.82rem;
    padding: 12px 16px;
  }

  .empresa-content h3 {
    font-size: 1.5rem;
  }

  .empresa-highlights,
  .shipping-methods,
  .form-row-2 {
    grid-template-columns: 1fr;
  }

  /* Áreas en 2 columnas compactas o 1 en pantallas muy chicas */
  .areas-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 36px;
  }

  .area-card {
    padding: 18px 12px;
  }

  .area-card i {
    font-size: 1.6rem;
    margin-bottom: 8px;
  }

  .area-card h4 {
    font-size: 0.95rem;
  }

  .area-card p {
    font-size: 0.78rem;
  }

  /* Pestañas deslizable horizontal en móvil */
  .catalog-tabs {
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: 24px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .catalog-tabs::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 10px 18px;
    font-size: 0.85rem;
  }

  .tab-panel {
    padding: 20px 16px;
  }

  .brand-pills {
    gap: 8px;
  }

  .brand-pill {
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  .insumo-card {
    flex-direction: column;
    text-align: center;
    padding: 18px;
  }

  /* Despacho y Contacto */
  .despacho-callout {
    padding: 24px 18px;
  }

  .despacho-phone-big {
    font-size: 1.55rem;
  }

  .contact-info-card,
  .contact-form-card {
    padding: 24px 18px;
  }

  .form-control {
    font-size: 16px; /* Evita auto-zoom en iPhone (iOS Safari) al tocar inputs */
    padding: 12px 14px;
  }

  .map-container {
    height: 280px;
    margin-top: 28px;
  }

  .footer {
    padding: 32px 0 24px;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    font-size: 0.8rem;
  }

  /* Ocultar el botón flotante suelto y activar la barra de navegación inferior tipo App */
  .whatsapp-float {
    display: none;
  }

  .mobile-bottom-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: #0b0f19;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 -8px 25px rgba(0, 0, 0, 0.35);
    z-index: 9999;
    padding-bottom: env(safe-area-inset-bottom);
  }

  .mobile-bar-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: #cbd5e1;
    font-size: 0.7rem;
    font-weight: 600;
    border-right: 1px solid rgba(255, 255, 255, 0.07);
  }

  .mobile-bar-item:last-child {
    border-right: none;
  }

  .mobile-bar-item i {
    font-size: 1.15rem;
    color: #ffffff;
  }

  .mobile-bar-item.express {
    color: #fda4af;
  }

  .mobile-bar-item.express i {
    color: var(--primary);
  }

  .mobile-bar-item.whatsapp {
    background: #16a34a;
    color: #ffffff;
    font-weight: 700;
  }

  .mobile-bar-item.whatsapp i {
    color: #ffffff;
  }
}

@media (max-width: 420px) {
  .areas-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 1.75rem;
  }
}