/* ========================================
   VARIABLES DE DISEÑO
======================================== */
:root {
  --azul-electrico: #00d4ff;
  --cian-turquesa: #00f7c8;
  --negro-fondo: #0a0a0c;
  --gris-oscuro: #1a1a1f;
  --gris-medio: #33333a;
  --blanco: #ffffff;
  --sombra-suave: 0 10px 30px rgba(0, 212, 255, 0.1);
  --transicion: all 0.3s ease;
}

/* ========================================
   REINICIO Y ESTILOS BASE
======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--negro-fondo);
  color: var(--blanco);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  color: var(--blanco);
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  background: linear-gradient(90deg, var(--azul-electrico), var(--cian-turquesa));
  color: var(--negro-fondo);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  border-radius: 30px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
  transition: var(--transicion);
  box-shadow: var(--sombra-suave);
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(0, 212, 255, 0.2);
}

/* ========================================
   HEADER
======================================== */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 12, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  padding: 15px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--azul-electrico);
}

.logo i {
  margin-right: 10px;
  color: var(--cian-turquesa);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
}

nav a {
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  position: relative;
}

nav a:hover {
  color: var(--azul-electrico);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--azul-electrico);
  transition: var(--transicion);
}

nav a:hover::after {
  width: 100%;
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  margin-top: 70px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(10, 10, 12, 0.7), rgba(0, 0, 0, 0.4));
  z-index: 1;
}

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

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: var(--blanco);
  opacity: 0.9;
}

/* ========================================
   SECCIÓN DIFERENCIALES
======================================== */
.diferenciales {
  padding: 100px 0;
  background-color: var(--gris-oscuro);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 60px;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--azul-electrico);
  border-radius: 2px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.card {
  background: var(--negro-fondo);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(0, 212, 255, 0.1);
  transition: var(--transicion);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 212, 255, 0.15);
  border-color: var(--azul-electrico);
}

.card i {
  font-size: 2.5rem;
  color: var(--cian-turquesa);
  margin-bottom: 20px;
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--azul-electrico);
}

.card p {
  color: var(--blanco);
  opacity: 0.8;
}

/* ========================================
   TESTIMONIOS
======================================== */
.testimonios {
  padding: 100px 0;
  background-color: var(--negro-fondo);
}

.testimonios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.testimonial-card {
  background: var(--gris-oscuro);
  padding: 25px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 15px;
}

.testimonial-img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--azul-electrico);
}

.testimonial-name {
  font-weight: 600;
  color: var(--blanco);
}

.testimonial-role {
  font-size: 0.85rem;
  color: var(--cian-turquesa);
}

.testimonial-text {
  font-style: italic;
  color: var(--blanco);
  opacity: 0.9;
}

/* ========================================
   CURSOS
======================================== */
.cursos {
  padding: 100px 0;
  background-color: var(--gris-oscuro);
}

.cursos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 50px;
}

.curso-card {
  background: var(--negro-fondo);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  transition: var(--transicion);
}

.curso-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 30px rgba(0, 212, 255, 0.1);
}

.curso-img {
  height: 180px;
  object-fit: cover;
}

.curso-content {
  padding: 20px;
}

.curso-content h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--azul-electrico);
}

.curso-content p {
  font-size: 0.95rem;
  color: var(--blanco);
  opacity: 0.8;
}

/* ========================================
   COMUNIDAD / BLOG
======================================== */
.comunidad {
  padding: 100px 0;
  background-color: var(--negro-fondo);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.blog-card {
  background: var(--gris-oscuro);
  padding: 25px;
  border-radius: 12px;
  border-left: 4px solid var(--azul-electrico);
}

.blog-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.blog-card p {
  font-size: 0.95rem;
  color: var(--blanco);
  opacity: 0.8;
  margin-bottom: 15px;
}

.blog-date {
  font-size: 0.85rem;
  color: var(--cian-turquesa);
  margin-bottom: 10px;
}

.btn-outline {
  background: transparent;
  color: var(--azul-electrico);
  border: 2px solid var(--azul-electrico);
}

.btn-outline:hover {
  background: var(--azul-electrico);
  color: var(--negro-fondo);
}

/* ========================================
   FOOTER
======================================== */
footer {
  background: var(--gris-medio);
  padding: 60px 0 30px;
  color: var(--blanco);
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
}

.footer-logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--azul-electrico);
  margin-bottom: 15px;
}

.footer-slogan {
  font-style: italic;
  color: var(--cian-turquesa);
  margin-bottom: 20px;
}

.footer-links h4 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--azul-electrico);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a:hover {
  color: var(--cian-turquesa);
}

.social-icons {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 50%;
  color: var(--azul-electrico);
  font-size: 1.2rem;
  transition: var(--transicion);
}

.social-icons a:hover {
  background: var(--azul-electrico);
  color: var(--negro-fondo);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: var(--blanco);
  opacity: 0.7;
}

/* ========================================
   ANIMACIONES DE ENTRADA (OPCIONAL)
======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate {
  animation: fadeInUp 0.8s ease forwards;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 20px;
  }

  nav ul {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.85rem;
  }
}
/* ========================================
   MODAL DE SUSCRIPCIÓN
======================================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 12, 0.95);
  backdrop-filter: blur(10px);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  animation: fadeIn 0.4s ease;
}

.modal {
  background: var(--gris-oscuro);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 212, 255, 0.15);
  width: 90%;
  max-width: 500px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  overflow: hidden;
  transform: scale(0.9);
  animation: modalEntrada 0.4s ease forwards;
}

@keyframes modalEntrada {
  to {
    transform: scale(1);
  }
}

.modal-cerrar {
  position: absolute;
  top: 15px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--blanco);
  font-size: 2rem;
  cursor: pointer;
  z-index: 10;
  opacity: 0.7;
  transition: var(--transicion);
}

.modal-cerrar:hover {
  opacity: 1;
  color: var(--azul-electrico);
}

.modal-contenido {
  padding: 50px;
  text-align: center;
}

.form-group-modal {
  margin-bottom: 20px;
  text-align: left;
}

.form-group-modal label {
  display: block;
  margin-bottom: 8px;
  color: var(--blanco);
  font-size: 0.9rem;
  font-weight: 500;
}

.form-group-modal input {
  width: 100%;
  padding: 12px 15px;
  background: var(--negro-fondo);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 8px;
  color: var(--blanco);
  font-family: 'Roboto', sans-serif;
}

.form-group-modal input:focus {
  outline: none;
  border-color: var(--azul-electrico);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}