/* Reset y variables CSS */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Paleta de colores fríos profesional */
  --primary-color: #1e3a8a;      /* Azul profundo */
  --secondary-color: #0ea5e9;    /* Azul cielo */
  --accent-color: #06b6d4;       /* Cyan */
  --dark-color: #0f172a;         /* Azul marino oscuro */
  --light-color: #f1f5f9;        /* Gris azulado claro */
  --white: #ffffff;
  --text-dark: #1e293b;          /* Gris azulado oscuro */
  --text-light: #64748b;         /* Gris azulado medio */
  --success-color: #059669;      /* Verde azulado */
  --warning-color: #0891b2;      /* Cyan oscuro */
  --course-color: #1e40af;       /* Azul específico para curso */
  --electric-color: #10b981;     /* Verde eléctrico */
  
  /* Gradientes fríos */
  --gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #0ea5e9 50%, #06b6d4 100%);
  --gradient-secondary: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
  --gradient-accent: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 50%, #0891b2 100%);
  --gradient-cool: linear-gradient(135deg, #1e40af 0%, #0284c7 50%, #0891b2 100%);
  --gradient-electric: linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
  
  /* Sombras frías */
  --shadow-sm: 0 2px 4px rgba(30, 58, 138, 0.1);
  --shadow-md: 0 4px 12px rgba(30, 58, 138, 0.15);
  --shadow-lg: 0 8px 25px rgba(30, 58, 138, 0.2);
  --shadow-xl: 0 20px 40px rgba(30, 58, 138, 0.3);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Tipografías existentes (mantener todas las @font-face) */
@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-ExtraBold.ttf') format('truetype');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

/* Tipografía moderna como fallback */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

body {
  font-family: 'Montserrat', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--light-color);
  overflow-x: hidden;
  padding-top: 80px;
}

/* Utilidades */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  font-size: 16px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-whatsapp {
  background: var(--gradient-electric);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Secciones */
.section {
  padding: 80px 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: 64px;
}

.section-title h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.section-title p {
  font-size: 1.125rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== ESTILOS ESPECÍFICOS DEL CURSO ===== */

/* Hero del Curso */
.course-hero {
  background: var(--gradient-primary);
  color: var(--dark-color);
  padding: 120px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background-image: 
    url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="circuit" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/><path d="M0,50 L20,50 M30,50 L70,50 M80,50 L100,50" stroke="rgba(255,255,255,0.05)" stroke-width="1"/><path d="M50,0 L50,20 M50,30 L50,70 M50,80 L50,100" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23circuit)"/></svg>');
}

.course-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="electric1" cx="30%" cy="30%"><stop offset="0%" stop-color="rgba(16,185,129,0.3)"/><stop offset="100%" stop-color="transparent"/></radialGradient><radialGradient id="electric2" cx="70%" cy="70%"><stop offset="0%" stop-color="rgba(6,182,212,0.2)"/><stop offset="100%" stop-color="transparent"/></radialGradient></defs><circle cx="300" cy="300" r="200" fill="url(%23electric1)"/><circle cx="700" cy="700" r="250" fill="url(%23electric2)"/></svg>');
  animation: float 20s infinite linear;
}

.course-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--primary-color);
  padding: 8px 16px;
  border-radius: 25px;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 24px;
  animation: slideInDown 1s ease-out;
}

.course-badge i {
  color: var(--electric-color);
  font-size: 16px;
}

.course-hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
  animation: fadeInUp 1s ease-out 0.3s both;
}

.course-subtitle {
  color: var(--text-dark);
  font-size: 1.25rem;
  margin-bottom: 32px;
  opacity: 0.9;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.course-tags {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  animation: fadeInUp 1s ease-out 0.9s both;
}

.tag {
  background: rgba(255, 255, 255, 0.2);
  color: var(--primary-color);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.course-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-bottom: 32px;
  animation: fadeInUp 1s ease-out 1.2s both;
}

.stat-item {
  text-align: center;
  transition: transform 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-5px);
}

.stat-item i {
  font-size: 2rem;
  margin-bottom: 8px;
  color: var(--electric-color);
}

.stat-item strong {
  color: var(--dark-color);
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-item span {
  color: var(--text-dark);
  font-size: 0.9rem;
  opacity: 0.8;
}

.course-price {
  text-align: center;
  margin-bottom: 32px;
  animation: fadeInUp 1s ease-out 1.5s both;
}

.price-label {
  color: var(--text-dark);
  display: block;
  font-size: 1rem;
  opacity: 0.9;
  margin-bottom: 8px;
}

.price-amount {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  color: var(--electric-color);
  margin-bottom: 4px;
}

.price-note {
  color: var(--text-light);
  font-size: 0.9rem;
  opacity: 0.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 1.8s both;
}

/* Información del Curso */
.course-info {
  padding: 80px 0;
  background: var(--white);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.info-card {
  background: var(--light-color);
  border-radius: var(--border-radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-left: 4px solid var(--secondary-color);
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.card-header i {
  font-size: 1.5rem;
  color: var(--secondary-color);
}

.card-header h3 {
  color: var(--text-dark);
  font-size: 1.3rem;
  font-weight: 600;
}

.info-card ul {
  list-style: none;
}

.info-card li {
  padding: 8px 0;
  color: var(--text-light);
  position: relative;
  padding-left: 20px;
}

.info-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--electric-color);
  font-weight: bold;
}

/* Contenido del Curso */
.course-content {
  padding: 80px 0;
  background: var(--light-color);
}

.curriculum-container {
  display: grid;
  gap: 24px;
}

.week-card {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.week-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.week-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.week-card.final-week {
  border: 2px solid var(--electric-color);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.week-header {
  background: var(--gradient-primary);
  color: var(--white);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.week-card.final-week .week-header {
  background: var(--gradient-electric);
}

.week-number {
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
}

.week-header h3 {
  flex: 1;
  margin: 0 16px;
  font-size: 1.2rem;
}

.week-price {
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 600;
}

.week-content {
  padding: 24px;
}

.session {
  background: var(--light-color);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 12px;
  border-left: 3px solid var(--secondary-color);
}

.assignment {
  background: #fef3c7;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 12px;
  border-left: 3px solid #f59e0b;
  display: flex;
  align-items: center;
  gap: 8px;
}

.assignment i {
  color: #f59e0b;
}

.practical {
  background: #f0fdf4;
  padding: 12px 16px;
  border-radius: 8px;
  border-left: 3px solid var(--electric-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.practical i {
  color: var(--electric-color);
}

/* Materiales */
.course-materials {
  padding: 80px 0;
  background: var(--white);
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.material-card {
  background: var(--light-color);
  border-radius: var(--border-radius);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-top: 4px solid var(--secondary-color);
  opacity: 0;
  transform: translateY(20px);
}

.material-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.material-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.material-card.featured {
  border-top-color: var(--electric-color);
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
}

.material-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
  color: var(--white);
}

.material-card.featured .material-icon {
  background: var(--gradient-electric);
}

.material-card h3 {
  color: var(--text-dark);
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.material-card p {
  color: var(--text-light);
  margin-bottom: 16px;
}

.format {
  background: var(--secondary-color);
  color: var(--white);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.material-card.featured .format {
  background: var(--electric-color);
}

/* Objetivos */
.course-objectives {
  padding: 80px 0;
  background: var(--light-color);
}

.objectives-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 24px;
}

.objective-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-left: 4px solid var(--secondary-color);
  opacity: 0;
  transform: translateY(20px);
}

.objective-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.objective-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--electric-color);
}

.objective-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 24px;
  color: var(--white);
  transition: var(--transition);
}

.objective-card:hover .objective-icon {
  background: var(--gradient-electric);
  transform: scale(1.1);
}

.objective-card h3 {
  color: var(--text-dark);
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.objective-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Inscripción */
.course-enrollment {
  padding: 80px 0;
  background: var(--white);
}

.enrollment-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.enrollment-form-section {
  background: var(--light-color);
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  border-top: 4px solid var(--secondary-color);
}

.instructor-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.instructor-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--electric-color);
}

.instructor-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.instructor-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--electric-color);
}

.instructor-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.instructor-info h3 {
  color: var(--text-dark);
  margin-bottom: 4px;
  font-size: 1.3rem;
}

.instructor-info p {
  color: var(--text-light);
  margin-bottom: 8px;
}

.instructor-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #fbbf24;
}

.instructor-rating span {
  color: var(--text-light);
  font-size: 14px;
  margin-left: 8px;
}

.instructor-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.instructor-contact .contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 14px;
}

.instructor-contact i {
  color: var(--secondary-color);
  width: 16px;
}

.course-summary {
  background: var(--light-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  border-left: 4px solid var(--secondary-color);
}

.course-summary h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--text-light);
}

.summary-item i {
  color: var(--secondary-color);
  width: 16px;
}

.price-item {
  background: var(--gradient-electric);
  color: var(--white);
  padding: 12px;
  border-radius: 8px;
  margin-top: 8px;
  font-weight: 600;
}

.price-item i {
  color: var(--white);
}

.guarantee-badge {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border: 2px solid var(--electric-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 12px;
}

.guarantee-badge i {
  font-size: 2rem;
  color: var(--electric-color);
}

.guarantee-badge strong {
  color: var(--text-dark);
  display: block;
  margin-bottom: 4px;
}

.guarantee-badge p {
  color: var(--text-light);
  font-size: 14px;
  margin: 0;
}

/* Testimonios */
.testimonials {
  padding: 80px 0;
  background: var(--gradient-secondary);
  color: var(--white);
}

.testimonials .section-title h2,
.testimonials .section-title p {
  color: var(--white);
}

.testimonials-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
}

.testimonial-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
}

.testimonial-info h4 {
  color: var(--white);
  margin-bottom: 4px;
}

.testimonial-info p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  margin: 0;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.testimonial-rating {
  display: flex;
  gap: 2px;
  color: #fbbf24;
}

/* FAQ */
.faq-section {
  padding: 80px 0;
  background: var(--white);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--light-color);
  border-radius: var(--border-radius);
  margin-bottom: 16px;
  overflow: hidden;
  border-left: 4px solid var(--secondary-color);
  transition: var(--transition);
}

.faq-item.open {
  border-left-color: var(--electric-color);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--white);
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--light-color);
}

.faq-question h3 {
  color: var(--text-dark);
  margin: 0;
  font-size: 1.1rem;
}

.faq-question i {
  color: var(--secondary-color);
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question i {
  transform: rotate(180deg);
  color: var(--electric-color);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.open .faq-answer {
  padding: 20px 24px;
  max-height: 200px;
}

.faq-answer p {
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
}

/* CTA Final */
.final-cta {
  padding: 80px 0;
  background: var(--gradient-primary);
  color: var(--white);
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.25rem;
  margin-bottom: 32px;
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--dark-color);
  color: var(--white);
  padding: 40px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: 16px;
  font-size: 1.2rem;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 8px;
}

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

.footer-section li {
  margin-bottom: 8px;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.footer-section a:hover {
  color: var(--secondary-color);
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: var(--secondary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--electric-color);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.8);
}

/* WhatsApp Flotante */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background: var(--electric-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 28px;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

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

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
  100% { transform: translateY(0px) rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding-top: 70px;
  }
  
  .course-hero {
    
    padding: 80px 0 60px;
  }
  
  .course-hero h1 {
    color: var(--dark-color);
    font-size: 2.5rem;
  }
  
  .course-stats {
    gap: 1.5rem;
  }
  
  .course-stats {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
  }
  
  .materials-grid {
    grid-template-columns: 1fr;
  }
  
  .objectives-grid {
    grid-template-columns: 1fr;
  }
  
  .enrollment-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .testimonials-slider {
    grid-template-columns: 1fr;
  }
  
  .cta-content h2 {
    font-size: 2rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .course-hero {
    padding: 60px 0 40px;
  }
  
  .course-tags {
    flex-direction: column;
    align-items: center;
  }
  
  .price-amount {
    font-size: 2.5rem;
  }
  
  .week-header {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
  
  .week-header h3 {
    margin: 0;
  }
  
  .enrollment-form-section {
    padding: 2rem;
  }
  
  .instructor-header {
    flex-direction: column;
    text-align: center;
  }
  
  .instructor-avatar {
    width: 60px;
    height: 60px;
  }
  
  .section-title h2 {
    font-size: 2rem;
  }
  
  .objective-card,
  .material-card,
  .info-card {
    padding: 24px;
  }
}