/* ========== RESET Y VARIABLES ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0a1128;
  --primary-dark: #050a18;
  --accent: #f59e0b;
  --accent-light: #ffb347;
  --text-dark: #0f172a;
  --text-muted: #334155;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --border: #e2e8f0;
  --ml-yellow: #ffe600;
  --wa-green: #25d366;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02), 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 20px 40px -12px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 25px 35px -12px rgba(0, 0, 0, 0.2);
  --transition-gpu: transform 0.25s cubic-bezier(0.25, 0.1, 0.2, 1), opacity 0.25s cubic-bezier(0.25, 0.1, 0.2, 1);
  --gradient-hero: linear-gradient(135deg, rgba(10, 17, 40, 0.02) 0%, rgba(245, 158, 11, 0.02) 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #fefefe 100%);
  /* Mejora táctil */
  --touch-target-min: 48px;
}

/* ========== BASE ========== */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text-dark);
  background-color: var(--white);
  line-height: 1.5;
  overflow-x: hidden;
  /* Mejora de renderizado en móvil */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Scrollbar personalizada (solo desktop, en móvil es nativa) */
@media (min-width: 768px) {
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: var(--bg-light); }
  ::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 12px; }
  ::-webkit-scrollbar-thumb:hover { background: var(--primary); }
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 8px;
  z-index: 200;
  text-decoration: none;
  transition: top 0.2s;
  border-radius: 0 0 8px 0;
  font-weight: 600;
}
.skip-link:focus { top: 0; }

/* Contenedor responsivo */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
@media (max-width: 768px) {
  .container { padding: 0 1rem; }
}

/* Tipografía */
h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-padding { padding: 5rem 0; }
@media (max-width: 768px) { .section-padding { padding: 3rem 0; } }

.bg-light { background: linear-gradient(120deg, #f9fafc 0%, #f1f5f9 100%); }

/* ========== BOTONES (táctiles) ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.8rem;
  border-radius: 60px;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 0.875rem;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  touch-action: manipulation;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(4px);
  will-change: transform;
  transition: var(--transition-gpu);
  /* Tamaño táctil mínimo */
  min-height: var(--touch-target-min);
}

/* Ajuste móvil: botones más grandes */
@media (max-width: 768px) {
  .btn { padding: 0.7rem 1.4rem; font-size: 0.8rem; }
}

.btn-primary {
  background: linear-gradient(105deg, var(--primary) 0%, #1a2a4f 100%);
  color: var(--white);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1;
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 200%;
  height: 200%;
  background: linear-gradient(115deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0) 100%);
  transform: rotate(25deg);
  transition: left 0.6s ease;
  z-index: -1;
}
.btn-primary:hover::after { left: 100%; }
.btn-primary:hover {
  background: linear-gradient(105deg, #000000 0%, var(--primary-dark) 100%);
  transform: translate3d(0, -3px, 0);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 158, 11, 0.3);
}

/* WhatsApp - máximo peso visual, sin animaciones que dificulten clic */
.btn-wa {
  background: linear-gradient(105deg, var(--wa-green) 0%, #1ea152 100%);
  color: white;
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
}
.btn-wa:hover {
  background: linear-gradient(105deg, #1da959 0%, #188a48 100%);
  transform: translate3d(0, -2px, 0);
  box-shadow: 0 12px 28px rgba(37, 211, 102, 0.6);
}

/* MercadoLibre - secundario */
.btn-ml {
  background: transparent;
  color: var(--primary) !important;
  font-weight: 700;
  border: 2px solid var(--ml-yellow);
  box-shadow: none;
  backdrop-filter: none;
}
.btn-ml i { color: var(--primary); }
.btn-ml:hover {
  background: rgba(255, 230, 0, 0.1);
  transform: translate3d(0, -2px, 0);
  border-color: #ffd000;
  box-shadow: 0 4px 12px rgba(255, 230, 0, 0.2);
}

.btn-outline {
  border: 1.5px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  color: #1e293b;
  font-weight: 600;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--primary);
  background: var(--white);
  transform: translate3d(0, -2px, 0);
  box-shadow: var(--shadow-sm);
}

/* Focus visible accesible */
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 60px;
}

/* ========== HEADER INTELIGENTE (GPU) ========== */
header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.8rem 0;
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.2, 1), padding 0.2s ease;
  will-change: transform;
}
header.header-hidden { transform: translate3d(0, -100%, 0); }
header.scrolled { padding: 0.4rem 0; background: rgba(255, 255, 255, 0.98); box-shadow: var(--shadow-sm); }

@media (max-width: 768px) {
  header { padding: 0.5rem 0; }
  header.scrolled { padding: 0.3rem 0; }
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.logo {
  font-size: 1.75rem;
  font-weight: 900;
  text-decoration: none;
  letter-spacing: -0.02em;
  background: linear-gradient(125deg, var(--primary) 20%, var(--accent) 80%);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  white-space: nowrap;
}
@media (max-width: 480px) {
  .logo { font-size: 1.4rem; }
}

/* Navegación desktop */
.nav-links {
  display: flex;
  gap: 2rem;
  font-weight: 600;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
  font-size: 0.95rem;
  position: relative;
  font-weight: 600;
  min-height: var(--touch-target-min);
  display: inline-flex;
  align-items: center;
}
.nav-links a.active { color: var(--accent); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 2px;
}
.nav-links a:hover { color: var(--primary); }

/* Menú hamburguesa móvil */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--primary);
  padding: 0.5rem;
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  touch-action: manipulation;
}
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(3px);
  z-index: 98;
  opacity: 0;
  transition: opacity 0.3s;
}
.mobile-overlay.active { display: block; opacity: 1; }

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
    box-shadow: var(--shadow-lg);
    transform: translate3d(0, -120%, 0);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.2, 1), opacity 0.3s cubic-bezier(0.25, 0.1, 0.2, 1);
    z-index: 99;
    border-bottom: 1px solid var(--border);
    will-change: transform, opacity;
  }
  .nav-links.open {
    transform: translate3d(0, 0, 0);
    opacity: 1;
  }
  .nav-links a {
    padding: 0.9rem 1.5rem;
    display: block;
    text-align: center;
    font-size: 1rem;
  }
  .nav-links a.active::after { display: none; }
}

/* ========== HERO ========== */
.hero {
  padding: 4rem 0 3rem;
  position: relative;
  background: radial-gradient(circle at 10% 20%, rgba(245, 158, 11, 0.02) 0%, rgba(255, 255, 255, 0) 70%);
  animation: fadeInUp 0.6s cubic-bezier(0.2, 0.9, 0.4, 1) forwards;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translate3d(0, 30px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .hero { animation: none; opacity: 1; transform: none; }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 2rem; }
  .hero-text p { margin-left: auto; margin-right: auto; }
  .hero-text div { justify-content: center; }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(125deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.05));
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
  border-radius: 40px;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.hero-text h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: 1.5rem;
  color: var(--primary);
}
.hero-text p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 500px;
}
@media (max-width: 992px) {
  .hero-text p { max-width: 100%; }
}

.hero-image {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #eef2ff, #e2e8f0);
  border-radius: 2rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.2, 1), box-shadow 0.3s ease;
  will-change: transform;
}
.hero-image:hover { transform: scale(1.01); box-shadow: var(--shadow-hover); }
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
  will-change: transform;
}
.hero-image:hover img { transform: scale(1.05); }

/* ========== TRUST BAR ========== */
.trust-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}
@media (max-width: 768px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}
.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  transition: var(--transition-gpu);
}
.trust-item i {
  font-size: 2rem;
  color: var(--accent);
  transition: transform 0.2s cubic-bezier(0.2, 0.9, 0.4, 1);
}
.trust-item:hover i { transform: translate3d(0, -5px, 0) scale(1.05); }
.trust-item span { font-weight: 700; font-size: 0.85rem; color: var(--primary); }
.trust-item a {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

/* ========== CARDS Y GRIDS ========== */
.benefits-grid, .products-grid { display: grid; gap: 2rem; }
.benefits-grid { grid-template-columns: repeat(3, 1fr); margin-top: 3rem; }
@media (max-width: 768px) {
  .benefits-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
}
.products-grid { grid-template-columns: repeat(2, 1fr); }

.benefit-card, .product-card, .review-card, .step-card, .app-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: 1.75rem;
  padding: 2rem;
  transition: var(--transition-gpu);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(2px);
  will-change: transform;
  /* Mejora de rendimiento en scroll */
  contain: layout style paint;
}
@media (max-width: 768px) {
  .benefit-card, .product-card, .review-card, .step-card, .app-card {
    padding: 1.5rem;
  }
}
.benefit-card:hover, .product-card:hover, .review-card:hover, .step-card:hover, .app-card:hover {
  transform: translate3d(0, -8px, 0) scale(1.01);
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: var(--shadow-hover);
}

.benefit-card i, .app-card i {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  transition: transform 0.2s cubic-bezier(0.2, 0.9, 0.4, 1);
}
.benefit-card:hover i, .app-card:hover i { transform: scale(1.1) rotate(2deg); }

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}
.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
  background: linear-gradient(125deg, var(--primary), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  display: inline-block;
}
.section-header p { color: var(--text-muted); font-size: 1.125rem; }

.applications-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}
@media (max-width: 768px) {
  .applications-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}
.app-card { text-align: center; padding: 1.8rem 1.2rem; }

/* Productos */
.product-card { position: relative; padding: 1.8rem; }
.badge-new {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: linear-gradient(125deg, #ef4444, #dc2626);
  color: white;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.3rem 0.9rem;
  border-radius: 60px;
  text-transform: uppercase;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .badge-new { animation: none; }
}
.product-img {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--bg-light);
  border-radius: 1.25rem;
  margin-bottom: 1.5rem;
  overflow: hidden;
}
.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
  will-change: transform;
}
.product-card:hover .product-img img { transform: scale(1.06); }
.product-info h3 { font-size: 1.4rem; margin-bottom: 0.25rem; }
.product-price {
  font-size: 1.9rem;
  font-weight: 900;
  background: linear-gradient(125deg, var(--primary), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}
@media (max-width: 768px) {
  .product-price { font-size: 1.5rem; }
}
.product-price + small {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 1rem;
}
.product-specs {
  list-style: none;
  margin-bottom: 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}
.product-specs li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.product-specs i { color: var(--accent); width: 1.1rem; }
.product-actions { display: flex; flex-direction: column; gap: 0.75rem; }

/* ========== TABLA COMPARATIVA ========== */
.comparison-table-wrapper {
  overflow-x: auto;
  margin-top: 2rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
  background: var(--white);
  -webkit-overflow-scrolling: touch;
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}
.comparison-table th {
  background: var(--primary);
  color: white;
  padding: 1rem;
  text-align: left;
  font-weight: 700;
}
.comparison-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-dark);
}
.comparison-table .model-name { font-weight: 800; color: var(--primary); }
.comparison-table i.fa-check { color: var(--accent); }
.comparison-table i.fa-times { color: #cbd5e1; }

/* ========== STEPS ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
@media (max-width: 768px) {
  .steps-grid { grid-template-columns: 1fr; }
}
.step-number {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary), #1e2a4a);
  color: white;
  font-size: 1.6rem;
  font-weight: 800;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  box-shadow: 0 8px 14px -6px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s cubic-bezier(0.2, 0.9, 0.4, 1);
}
.step-card:hover .step-number { transform: scale(1.1); background: var(--accent); }

/* ========== REVIEWS ========== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}
@media (max-width: 768px) {
  .reviews-grid { grid-template-columns: 1fr; }
}
.stars { color: var(--accent); margin-bottom: 1rem; font-size: 1rem; letter-spacing: 2px; }
.review-text { margin-bottom: 1.5rem; font-weight: 500; }

/* ========== VIDEO ========== */
.video-container {
  max-width: 800px;
  margin: 2rem auto 0;
  border-radius: 1.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #000;
  border: 1px solid rgba(245, 158, 11, 0.2);
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.2, 1);
}
.video-container:hover { transform: scale(1.01); }
.video-container iframe {
  width: 100%;
  aspect-ratio: 16/9;
  display: block;
}

/* ========== FAQ ========== */
.faq-container { max-width: 800px; margin: 0 auto; }
details {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}
details:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
summary {
  padding: 1.25rem 1.8rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: var(--touch-target-min);
}
summary::-webkit-details-marker { display: none; }
summary:after {
  content: '\f067';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--accent);
  transition: transform 0.2s;
}
details[open] summary:after { transform: rotate(45deg); }
.faq-content { padding: 0 1.8rem 1.8rem; color: var(--text-muted); }

/* ========== SOCIAL LINKS ========== */
.social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-top: 2rem;
}
.social-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 2rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 80px;
  text-decoration: none;
  font-weight: 700;
  color: var(--primary);
  transition: var(--transition-gpu);
  min-height: var(--touch-target-min);
}
.social-icon i { font-size: 1.4rem; transition: transform 0.2s; }
.social-icon:hover {
  background: linear-gradient(105deg, var(--primary), #1e2a4a);
  border-color: var(--primary);
  color: var(--white);
  transform: translate3d(0, -4px, 0);
}
.social-icon:hover i { transform: scale(1.2); color: white; }

/* ========== FOOTER ========== */
footer {
  background: linear-gradient(105deg, #0a0f1c 0%, var(--primary) 100%);
  color: white;
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(245, 158, 11, 0.2);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  position: relative;
  display: inline-block;
}
.footer-col h4:after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 4px;
}
.footer-col p, .footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a:hover { color: var(--accent); padding-left: 0.3rem; }
.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  font-size: 0.8rem;
  color: #94a3b8;
}
.newsletter-box {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.newsletter-box input {
  flex: 1;
  padding: 0.7rem 1rem;
  border-radius: 40px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  min-height: var(--touch-target-min);
}
.newsletter-box .btn {
  padding: 0.7rem 1.2rem;
  font-size: 0.8rem;
  background: var(--accent);
  color: var(--primary);
}

/* ========== BOTONES FLOTANTES ========== */
.fab-wa {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: linear-gradient(125deg, var(--wa-green), #128c7e);
  color: white;
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  box-shadow: 0 10px 25px -5px rgba(37, 211, 102, 0.6);
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s cubic-bezier(0.25, 0.1, 0.2, 1);
  z-index: 100;
  text-decoration: none;
  will-change: transform;
}
@media (max-width: 768px) {
  .fab-wa { width: 56px; height: 56px; font-size: 1.8rem; bottom: 1rem; right: 1rem; }
}
.fab-wa:hover {
  transform: scale(1.08);
  background: #20b859;
  box-shadow: 0 15px 30px -8px rgba(37, 211, 102, 0.8);
}

.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  background: var(--primary);
  color: white;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: opacity 0.2s, transform 0.2s;
  opacity: 0;
  visibility: hidden;
  z-index: 100;
  text-decoration: none;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--accent); transform: translate3d(0, -4px, 0); }

/* ========== REVEAL ANIMATIONS ========== */
.reveal {
  opacity: 0;
  transform: translate3d(0, 30px, 0);
  transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1);
  will-change: transform, opacity;
}
.reveal.revealed { opacity: 1; transform: translate3d(0, 0, 0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ========== UTILIDADES ========== */
.brand-highlight {
  background: linear-gradient(125deg, var(--accent), #ffb347);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  font-weight: 800;
}