:root {
  --yellow: #facc15;
  --yellow-light: #fde047;
  --yellow-dark: #eab308;
  --black: #000000;
  --gray: #f3f4f6;
  --dark: #1f2937;
  --green: #12f142;
  --gray-text: #6b7280;
}

body {
  background: #f8fafc;
  color: var(--black);
  font-family: 'Inter', sans-serif;
}

/* HEADER */
.site-header {
  background: rgba(0, 0, 0, 0.98);
  padding: 20px 0;
  border-bottom: 4px solid var(--yellow);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.nav-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-img {
  max-width: 250px;
  height: auto;
  transition: transform 0.3s ease;
}

.logo-img:hover {
  transform: scale(1.05);
}

.logo:hover .logo-img {
  filter: brightness(1.1) contrast(1.1);
}

.nav-links {
  display: flex;
  gap: 25px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
  padding: 8px 15px;
  border-radius: 6px;
}

.nav-links a:hover {
  color: var(--yellow);
  background: rgba(250, 204, 21, 0.1);
}

.nav-cta {
  background: var(--yellow);
  color: var(--black) !important;
  padding: 10px 25px !important;
  border-radius: 8px;
  font-weight: 800 !important;
}

.nav-cta:hover {
  background: var(--yellow-dark) !important;
  transform: translateY(-2px);
}

/* HERO */
.solosobres-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  color: white;
  text-align: center;
  padding: 100px 20px 60px;
  overflow: hidden;
  background: black;
}

.hero-video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.8));
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 900px;
  margin: 0 auto;
}

.solosobres-hero h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  line-height: 1.2;
}

.solosobres-hero h1 span {
  color: var(--yellow);
  display: block;
}

.solosobres-hero p {
  font-size: 1.3rem;
  color: #e5e7eb;
  max-width: 700px;
  margin: 0 auto 40px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 50px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--yellow);
  display: block;
}

.stat-label {
  font-size: 0.9rem;
  color: #d1d5db;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* TIRA DE IMÁGENES */
.image-strip {
  overflow: hidden;
  padding: 60px 0 30px;
  background: white;
  position: relative;
  border-bottom: 1px solid var(--gray);
}

.strip-title {
  text-align: center;
  margin-bottom: 25px;
  font-weight: 600;
  color: var(--black);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.strip-track {
  display: flex;
  width: calc(200px * 22);
  animation: scroll-infinite 40s linear infinite;
}

.strip-track:hover {
  animation-play-state: paused;
}

.strip-track img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  margin: 0 15px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  transition: transform 0.3s;
}

.strip-disclaimer {
  text-align: center;
  font-size: 0.7rem;
  color: #9ca3af;
  margin-top: 20px;
  padding: 0 20px;
  font-style: italic;
}

@keyframes scroll-infinite {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-200px * 11 - (30px * 11))); }
}

/* CATÁLOGO */
.catalog-section {
  padding: 100px 20px;
  background: white;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 70px;
}

.section-title {
  font-size: 3rem;
  margin-bottom: 20px;
  color: var(--black);
}

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

.section-desc {
  font-size: 1.2rem;
  color: #6b7280;
  line-height: 1.6;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 30px;
  max-width: 1400px;
  margin: 0 auto;
}

.product-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 2px solid transparent;
  position: relative;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-color: var(--yellow);
}

.product-image {
  height: 280px;
  background: var(--gray);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  padding: 15px;
  box-sizing: border-box;
  flex-shrink: 0;
}

.product-image img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.5s;
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-info {
  padding: 25px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 1.4rem;
  margin-bottom: 15px;
  color: var(--black);
  line-height: 1.3;
}

.product-specs {
  margin: 20px 0;
  flex-grow: 1;
}

.spec-item {
  display: flex;
  margin-bottom: 12px;
  align-items: flex-start;
}

.spec-icon {
  width: 22px;
  margin-right: 12px;
  color: var(--yellow);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.spec-content h4 {
  font-size: 0.85rem;
  color: #6b7280;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.spec-content p {
  color: var(--black);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.4;
}

.product-actions {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.btn-quote {
  flex: 1;
  background: var(--yellow);
  color: var(--black);
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.3s;
  font-size: 0.95rem;
}

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

/* BENEFICIOS */
.benefits-section {
  padding: 100px 20px;
  background: var(--gray);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.benefit-card {
  background: white;
  padding: 40px 30px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
  border-top: 5px solid var(--yellow);
}

.benefit-icon {
  width: 70px;
  height: 70px;
  background: var(--yellow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  font-size: 1.8rem;
  color: var(--black);
}

.benefit-card h3 {
  margin-bottom: 15px;
  font-size: 1.4rem;
}

/* COTIZACIÓN */
.quote-section {
  padding: 100px 20px;
  background: white;
  text-align: center;
}

.quote-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--black);
  color: white;
  padding: 60px 40px;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.quote-container h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.quote-container h2 span {
  color: var(--yellow);
}

.quote-container p {
  color: #d1d5db;
  margin-bottom: 40px;
  font-size: 1.1rem;
}

.quote-form {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.form-group {
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
  color: white;
}

.form-group select,
.form-group input {
  width: 100%;
  padding: 15px;
  border-radius: 8px;
  border: 2px solid #374151;
  background: #1f2937;
  color: white;
  font-size: 1rem;
}

.form-group select:focus,
.form-group input:focus {
  outline: none;
  border-color: var(--yellow);
}

.submit-btn {
  background: var(--yellow);
  color: var(--black);
  border: none;
  padding: 18px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

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

/* APLICACIONES */
.applications-section {
  padding: 100px 20px;
  background: white;
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 1400px;
  margin: 0 auto;
}

.application-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  border: 2px solid var(--gray);
  transition: all 0.3s;
  height: 100%;
}

.application-card:hover {
  border-color: var(--yellow);
  transform: translateY(-5px);
}

.application-icon {
  height: 120px;
  background: linear-gradient(135deg, var(--yellow) 0%, var(--yellow-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  font-size: 3rem;
}

.application-content {
  padding: 30px;
  height: calc(100% - 120px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.application-content h3 {
  margin-bottom: 15px;
  color: var(--black);
  font-size: 1.3rem;
}

.application-content p {
  color: var(--gray-text);
  line-height: 1.5;
  flex-grow: 1;
}

/* FOOTER */
.site-footer {
  background: var(--black);
  color: white;
  padding: 80px 20px 40px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 50px;
}

.footer-column h3 {
  font-size: 1.3rem;
  margin-bottom: 25px;
  color: var(--yellow);
}

.footer-column a {
  color: #d1d5db;
  text-decoration: none;
  display: block;
  margin-bottom: 12px;
  transition: color 0.3s;
}

.footer-column a:hover {
  color: var(--yellow);
}

.footer-bottom {
  text-align: center;
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid #374151;
  color: #9ca3af;
  font-size: 0.9rem;
}

.whatsapp-fixed {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--green);
  color: var(--black);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 4px 20px rgba(18, 139, 3, 0.466);
  z-index: 1000;
  transition: transform 0.3s;
}

.whatsapp-fixed:hover {
  transform: scale(1.1);
}

/* PRELOADER */
#loader-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(15px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.6s ease, visibility 0.6s;
}

.loader-content {
  text-align: center;
  width: 200px;
}

.envelope-loader {
  width: 100%;
  fill: none;
  stroke: white;
  stroke-width: 2;
  stroke-linecap: round;
}

.line {
  stroke-dasharray: 300;
  stroke-dashoffset: 300;
  animation: drawLines 2.5s infinite ease-in-out;
}

.body {
  animation-delay: 0s;
}

.flap-left {
  animation-delay: 0.5s;
}

.flap-right {
  animation-delay: 0.5s;
}

@keyframes drawLines {
  0% {
    stroke-dashoffset: 300;
  }
  50% {
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dashoffset: 300;
  }
}

.loader-text {
  color: white;
  margin-top: 20px;
  font-size: 0.8rem;
  letter-spacing: 4px;
  font-weight: 600;
  opacity: 0.7;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  50% { opacity: 0.3; }
}

.loader-hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

/* MEDIA QUERIES */
@media (min-width: 1400px) {
  .applications-grid {
    max-width: 1600px;
    gap: 40px;
  }
  
  .product-image {
    height: 320px;
    padding: 10px;
  }
}

@media (max-width: 1024px) {
  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 900px;
  }
  
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 900px;
  }
  
  .product-image {
    height: 260px;
    padding: 20px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .solosobres-hero {
    min-height: 60vh;
    padding: 80px 20px 40px;
  }
  
  .solosobres-hero h1 {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2.2rem;
  }
  
  .hero-stats {
    gap: 30px;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    gap: 25px;
  }
  
  .product-card {
    display: flex;
    flex-direction: row;
    max-width: 100%;
  }
  
  .product-image {
    height: 180px;
    width: 180px;
    padding: 15px;
    flex-shrink: 0;
  }
  
  .product-info {
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  
  .product-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
  }
  
  .product-specs {
    margin: 15px 0;
  }
  
  .product-actions {
    flex-direction: column;
    margin-top: 15px;
  }
  
  .btn-quote {
    font-size: 0.9rem;
    padding: 10px;
  }
  
  .applications-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .strip-track img {
    width: 150px;
    height: 150px;
  }
  
  .logo-img {
    max-width: 200px;
  }
}

@media (max-width: 480px) {
  .logo-img {
    max-width: 180px;
  }
  
  .product-card {
    flex-direction: column;
  }
  
  .product-image {
    height: 220px;
    width: 100%;
    padding: 20px;
  }
  
  .product-title {
    font-size: 1.3rem;
  }
  
  .spec-icon {
    width: 20px;
    margin-right: 10px;
  }
  
  .spec-content h4 {
    font-size: 0.8rem;
  }
  
  .spec-content p {
    font-size: 0.9rem;
  }
}

/* Añade esto al final de tu style.css, después de las media queries existentes */

/* IPAD AIR ESPECÍFICO (820px - 1180px) */
@media only screen 
  and (min-device-width: 768px) 
  and (max-device-width: 1180px)
  and (orientation: portrait) {
  
  /* Ajustes generales para iPad vertical */
  body {
    font-size: 16px;
  }
  
  /* HEADER */
  .nav-bar {
    padding: 0 30px;
  }
  
  .logo-img {
    max-width: 220px;
  }
  
  /* HERO */
  .solosobres-hero {
    min-height: 60vh;
    padding: 120px 20px 80px;
  }
  
  .solosobres-hero h1 {
    font-size: 3rem;
    line-height: 1.3;
  }
  
  .solosobres-hero p {
    font-size: 1.2rem;
    max-width: 600px;
  }
  
  /* CATÁLOGO - Grid de 2 columnas para iPad */
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
    gap: 30px;
  }
  
  .product-card {
    flex-direction: column;
    height: auto;
  }
  
  .product-image {
    height: 250px;
    width: 100%;
    padding: 25px;
  }
  
  .product-info {
    padding: 25px;
  }
  
  .product-title {
    font-size: 1.4rem;
  }
  
  /* APLICACIONES - Ajustar grid para iPad */
  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
    gap: 25px;
  }
  
  .application-card {
    height: auto;
  }
  
  .application-icon {
    height: 100px;
  }
  
  .application-content {
    padding: 25px;
  }
  
  /* BENEFICIOS */
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
  }
  
  .benefit-card {
    padding: 30px 20px;
  }
  
  /* COTIZACIÓN */
  .quote-container {
    padding: 50px 30px;
  }
  
  .quote-container h2 {
    font-size: 2.2rem;
  }
  
  /* TIRA DE IMÁGENES */
  .strip-track img {
    width: 180px;
    height: 180px;
    margin: 0 12px;
  }
  
  /* FOOTER */
  .footer-container {
    gap: 40px;
  }
}

/* iPad Air en horizontal */
@media only screen 
  and (min-device-width: 820px) 
  and (max-device-width: 1180px)
  and (orientation: landscape) {
  
  /* Ajustes para orientación horizontal */
  .solosobres-hero {
    min-height: 80vh;
    padding: 150px 20px 100px;
  }
  
  .solosobres-hero h1 {
    font-size: 3.2rem;
  }
  
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1100px;
  }
  
  .applications-grid {
    grid-template-columns: repeat(4, 1fr);
    max-width: 1100px;
  }
  
  .strip-track img {
    width: 160px;
    height: 160px;
  }
}

/* PUNTOS DE CORTE ESPECÍFICOS PARA IPAD */
@media (min-width: 768px) and (max-width: 1180px) {
  /* Ajustar el hero para que no quede muy corto */
  .solosobres-hero {
    min-height: 65vh;
  }
  
  /* Ajustar tamaño de fuente en títulos de sección */
  .section-title {
    font-size: 2.8rem;
  }
  
  /* Ajustar padding de secciones */
  .catalog-section,
  .applications-section,
  .benefits-section,
  .quote-section {
    padding: 80px 20px;
  }
  
  /* Ajustar botones de cotización en productos */
  .btn-quote {
    font-size: 1rem;
    padding: 14px;
  }
  
  /* Ajustar formulario de cotización */
  .form-group select,
  .form-group input {
    padding: 14px;
  }
  
  .submit-btn {
    padding: 16px;
  }
}

/* Corrección específica para el grid de productos en iPad */
@media (min-width: 768px) and (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 750px;
  }
  
  .product-image {
    height: 240px;
  }
}

/* Ajustar el header para iPad */
@media (min-width: 768px) and (max-width: 1180px) {
  .site-header {
    padding: 15px 0;
  }
  
  .nav-links {
    gap: 20px;
  }
  
  .nav-links a {
    padding: 8px 12px;
    font-size: 0.95rem;
  }
  
  .nav-cta {
    padding: 10px 20px !important;
  }
}

/* Mejorar la visualización de la tira de logos en iPad */
@media (min-width: 768px) and (max-width: 1180px) {
  .image-strip {
    padding: 50px 0 25px;
  }
  
  .strip-track {
    animation-duration: 30s; /* Más lento para iPad */
  }
}

/* Ajustar el preloader para iPad */
@media (min-width: 768px) and (max-width: 1180px) {
  .loader-content {
    width: 180px;
  }
  
  .loader-text {
    font-size: 0.85rem;
  }
}

/* Corrección para elementos flotantes */
@media (min-width: 768px) and (max-width: 1180px) {
  .whatsapp-fixed {
    width: 55px;
    height: 55px;
    font-size: 1.8rem;
    bottom: 25px;
    right: 25px;
  }
}

/* Asegurar que las imágenes se vean bien en iPad */
@media (min-width: 768px) and (max-width: 1180px) {
  .product-image img {
    max-height: 90%;
    max-width: 90%;
  }
}

/* Optimizar el footer para iPad */
@media (min-width: 768px) and (max-width: 1180px) {
  .site-footer {
    padding: 70px 20px 35px;
  }
  
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
  
  .footer-bottom {
    margin-top: 50px;
    padding-top: 25px;
  }
}

.ipad-device .solosobres-hero {
  background-attachment: scroll; /* Safari en iPad tiene problemas con fixed */
}

.ipad-device .hero-video-bg {
  /* Asegurar que el video funcione bien en iPad */
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

.ipad-device .product-card:hover {
  transform: translateY(-5px); /* Efecto hover más sutil para iPad */
}

/* --- SECCIÓN PERSONALIZACIÓN PARA LA INDUSTRIA --- */

.industry-solutions {
  padding: 100px 20px;
  background: var(--gray); /* Utiliza tu gris de fondo para secciones alternas */
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1400px; /* Consistente con tu products-grid */
  margin: 0 auto;
}

.industry-item {
  background: white;
  padding: 40px 30px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border-top: 5px solid var(--yellow); /* Acento amarillo igual que en tus beneficios */
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  flex-direction: column;
}

.industry-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-top-color: var(--yellow-dark); /* Cambio sutil al pasar el mouse */
}

.industry-item h3 {
  font-family: 'Inter', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--black);
  margin-bottom: 15px;
  line-height: 1.3;
}

.industry-item p {
  font-family: 'Inter', sans-serif;
  color: var(--gray-text);
  line-height: 1.6;
  font-size: 1rem;
}

/* --- ADAPTACIÓN PARA MÓVILES --- */
@media (max-width: 768px) {
  .industry-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
  }
  
  .industry-solutions {
    padding: 60px 20px;
  }
}

/* --- AJUSTE ESPECÍFICO PARA IPAD AIR (Sincronizado con tu CSS) --- */
@media only screen 
  and (min-device-width: 768px) 
  and (max-device-width: 1180px) {
  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
  }
}

/* Mejoras para dispositivos táctiles */
.touch-device:hover {
  transform: none !important;
}

.touch-device:active {
  transform: translateY(-2px) !important;
}

/* Mejora para inputs en dispositivos iOS */
input, select, textarea, button {
  -webkit-appearance: none;
  border-radius: 0;
}

input[type="number"] {
  -webkit-appearance: textfield;
  appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Confirmación de envío */
.submit-btn.sent {
  background: #10b981 !important;
  animation: pulseSuccess 1s ease;
}

@keyframes pulseSuccess {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}