/* ============================================
   HEADER & NAVEGACIÓN
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  gap: var(--space-xl);
}

.nav__brand img {
  height: 50px;
  width: auto;
}

.nav__menu {
  display: none;
  gap: var(--space-xl);
}

@media (min-width: 1024px) {
  .nav__menu {
    display: flex;
  }
}

.nav__menu a {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: color var(--transition-fast);
}

.nav__menu a:hover {
  color: var(--color-primary);
}

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

@media (max-width: 1023px) {
  .nav {
    padding: var(--space-md) 0;
  }
  
  .nav__brand a {
    font-size: 0.9rem !important;
  }
  
  .nav__brand svg {
    width: 40px !important;
    height: 40px !important;
  }
  
  .nav > .btn--primary {
    display: none;
  }
}

@media (max-width: 480px) {
  .nav__brand span {
    font-size: 0.8rem !important;
    line-height: 1.1 !important;
  }
}

/* ============================================
   MOBILE MENU
   ============================================ */

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 100;
}

.nav__toggle .icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-dark);
}

@media (max-width: 1023px) {
  .nav__toggle {
    display: block;
  }
  
  .nav__menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: white;
    box-shadow: var(--shadow-2xl);
    padding: var(--space-3xl) var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 99;
    flex-direction: column;
    gap: var(--space-xl);
  }
  
  .nav__menu--open {
    transform: translateX(0);
  }
  
  body.menu-open {
    overflow: hidden;
  }
  
  body.menu-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 98;
  }
}

/* Active Nav Link */
.nav__menu a.active {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* ============================================
   HERO - RESPONSIVE CORRECTO
   ============================================ */

.hero {
  padding: var(--space-4xl) 0;
  background: linear-gradient(135deg, #0052CC 0%, #0066FF 100%);
  position: relative;
  overflow: hidden;
  min-height: 70vh;
  display: flex;
  align-items: center;
}

@media (min-width: 768px) {
  .hero {
    min-height: 80vh;
    padding: var(--space-5xl) 0;
  }
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

@media (min-width: 768px) {
  .hero::before {
    right: -20%;
    width: 800px;
    height: 800px;
  }
}

.hero .container {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 100%;
  padding: 0 1rem;
  overflow-x: hidden;
}

@media (min-width: 768px) {
  .hero .container {
    max-width: 900px;
    padding: 0 var(--container-padding);
  }
}

.hero__title {
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease;
  color: #FFFFFF !important;
  font-size: 2rem;
  line-height: 1.2;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

@media (min-width: 768px) {
  .hero__title {
    font-size: clamp(2.5rem, 5vw, var(--font-size-6xl));
  }
}

.hero__subtitle {
  display: block;
  color: #FFFFFF !important;
  font-size: 1.25rem;
  margin-top: var(--space-md);
  font-weight: var(--font-weight-semibold);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

@media (min-width: 768px) {
  .hero__subtitle {
    font-size: clamp(1.5rem, 3vw, var(--font-size-3xl));
  }
}

.hero__description {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.95) !important;
  margin-bottom: var(--space-2xl);
  line-height: var(--line-height-relaxed);
  animation: fadeInUp 0.8s ease 0.2s backwards;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
  word-wrap: break-word;
  overflow-wrap: break-word;
  padding: 0 0.5rem;
}

@media (min-width: 768px) {
  .hero__description {
    font-size: var(--font-size-xl);
    max-width: 800px;
    padding: 0;
  }
}

.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: stretch;
  justify-content: center;
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s ease 0.4s backwards;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .hero__cta {
    flex-direction: row;
    align-items: center;
    gap: var(--space-lg);
    padding: 0;
  }
}

/* Botones específicos en hero */
.hero .btn {
  width: 100%;
  max-width: 100%;
  white-space: normal;
  text-align: center;
  padding: var(--space-md) var(--space-lg);
}

@media (min-width: 640px) {
  .hero .btn {
    width: auto;
    white-space: nowrap;
    padding: var(--space-lg) var(--space-2xl);
  }
}

.hero .btn--primary {
  background: white;
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  border: 2px solid white;
}

.hero .btn--primary:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.hero .btn--secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
  font-weight: var(--font-weight-semibold);
}

.hero .btn--secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.hero__trust {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  animation: fadeInUp 0.8s ease 0.6s backwards;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .hero__trust {
    grid-template-columns: repeat(3, 1fr);
    max-width: 700px;
    gap: var(--space-lg);
  }
}

.hero__trust p {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.95) !important;
  margin: 0;
  text-align: center;
}

@media (min-width: 768px) {
  .hero__trust p {
    font-size: var(--font-size-sm);
  }
}

/* ============================================
   EL PROBLEMA QUE RESOLVEMOS
   ============================================ */

.problema h2 {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.problema__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 768px) {
  .problema__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.problema__card {
  text-align: center;
  padding: var(--space-2xl);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.problema__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.problema__card .icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto var(--space-lg);
  color: var(--color-primary);
}

.problema__card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
}

.problema__card p {
  color: var(--color-gray-600);
  margin: 0;
}

/* ============================================
   CÓMO FUNCIONA EL SISTEMA
   ============================================ */

.como-funciona {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
}

.como-funciona h2 {
  text-align: center;
  color: white;
  margin-bottom: var(--space-3xl);
}

.proceso {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .proceso {
    grid-template-columns: repeat(3, 1fr);
  }
}

.proceso__step {
  text-align: center;
  position: relative;
}

.proceso__number {
  width: 4rem;
  height: 4rem;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  border: 3px solid white;
}

.proceso__step h3 {
  color: white;
  margin-bottom: var(--space-md);
}

.proceso__step p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

/* ============================================
   QUÉ INCLUYE TU ESTUDIO
   ============================================ */

.incluye h2 {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.incluye__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .incluye__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.incluye__item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.incluye__item .icon {
  color: var(--color-success);
  flex-shrink: 0;
}

.incluye__item h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.incluye__item p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin: 0;
}

/* ============================================
   CASOS DE USO - CON ICONOS SVG
   ============================================ */

.casos-uso {
  background: var(--color-gray-100);
}

.casos-uso h2 {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.casos-uso__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 640px) {
  .casos-uso__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .casos-uso__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.caso {
  text-align: center;
  padding: var(--space-2xl);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.caso:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.caso__icon {
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.caso__icon svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 8px rgba(0, 102, 255, 0.2));
}

.caso h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
  color: var(--color-dark);
}

.caso p {
  color: var(--color-gray-600);
  margin: 0;
  line-height: var(--line-height-relaxed);
}

/* ============================================
   DIFERENCIADORES ¿Porque Somos diferentes?
   ============================================ */

.diferenciadores h2 {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.comparativa {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .comparativa {
    grid-template-columns: repeat(2, 1fr);
  }
}

.comparativa__column {
  padding: var(--space-2xl);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.comparativa__column--highlight {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.comparativa__column h3 {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.comparativa__column--highlight h3 {
  color: white;
}

.comparativa__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.comparativa__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.comparativa__list li::before {
  content: '✓';
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.comparativa__list--bad li::before {
  content: '✗';
  color: var(--color-error);
}

.comparativa__list--good li::before {
  color: var(--color-success);
}

.comparativa__column--highlight .comparativa__list li::before {
  color: white;
}

/* ============================================
   PRICING INVERSION EN TU ESTUDIO
   ============================================ */

.precio h2 {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.pricing {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  max-width: 1200px;
  margin: 0 auto;
}

@media (min-width: 1024px) {
  .pricing {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing__card {
  padding: var(--space-2xl);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-base);
}

.pricing__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.pricing__card--featured {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.pricing__badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-accent);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing__card h3 {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.pricing__card--featured h3 {
  color: white;
}

.pricing__price {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-primary);
}

.pricing__card--featured .pricing__price {
  color: white;
}

.pricing__price span {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
}

.pricing__features {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.pricing__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  font-size: var(--font-size-sm);
}

.pricing__features li::before {
  content: '✓';
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-success);
  flex-shrink: 0;
}

.pricing__card--featured .pricing__features li::before {
  color: white;
}

/* ============================================
   FAQ
   ============================================ */

.faq h2 {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.faq__item {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq__question {
  padding: var(--space-lg);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
  list-style: none;
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '+';
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__question:hover {
  background: var(--color-gray-100);
}

.faq__answer {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-gray-700);
}

.faq__answer p {
  margin: 0;
}

/* ============================================
   CTA FINAL DECIDE CON DATOS NO CON INTUICION
   ============================================ */

.cta-final {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
  color: rgba(255, 255, 255, 0.212);
  text-align: center;
  padding: var(--space-5xl) 0;
}

.cta-final h2 {
  color: rgba(10, 0, 0, 0.95);
  margin-bottom: var(--space-lg);
}

.cta-final p {
  font-size: var(--font-size-xl);
  color: rgba(10, 0, 0, 0.95);
  margin-bottom: var(--space-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

@media (min-width: 640px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__col h3,
.footer__col h4 {
  color: white;
  margin-bottom: var(--space-lg);
}

.footer__col p {
  color: var(--color-gray-400);
  margin-bottom: var(--space-md);
}

.footer__company {
  font-weight: var(--font-weight-semibold);
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__col a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: white;
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-gray-800);
  text-align: center;
}

.footer__bottom p {
  font-size: var(--font-size-sm);
  margin: var(--space-sm) 0;
}

/* ============================================
   WHATSAPP FLOTANTE - RESPONSIVE
   ============================================ */

.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  color: white;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 1001;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  text-decoration: none;
}

@media (min-width: 768px) {
  .whatsapp-float {
    width: 60px;
    height: 60px;
    bottom: 20px;
    right: 20px;
  }
}

.whatsapp-float:hover {
  background-color: #20ba5a;
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 35px;
  height: 35px;
  fill: white;
}

@media (max-width: 767px) {
  .whatsapp-float svg {
    width: 32px;
    height: 32px;
  }
}

/* Tooltip */
.whatsapp-float::before {
  content: '¿Necesitas ayuda?';
  position: absolute;
  right: 70px;
  background: var(--color-dark);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  white-space: nowrap;
  font-size: var(--font-size-sm);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
}

.whatsapp-float:hover::before {
  opacity: 1;
  visibility: visible;
  right: 75px;
}

@media (max-width: 768px) {
  .whatsapp-float::before {
    display: none;
  }
}

/* ============================================
   ANIMACIONES
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveal */
[data-scroll] {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

[data-scroll].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ICONOS 3D - Sección casos de uso */
.caso_icon img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(0,0,0,.18));
  transition: transform .25s ease;
}

.caso:hover .caso_icon img {
  transform: translateY(-4px) scale(1.05);
}