/* ==========================================================================
   branding: Subiending (Navy #09142b, Blue #2B41D8, Lime #d4ed5c)
   theme: High-End Dark Tech
   ========================================================================== */

:root {
  /* Colors */
  --brand-navy: #09142b;
  --brand-navy-light: #10214c;
  --brand-navy-dark: #050a16;
  --brand-blue: #2b41d8;
  --brand-blue-glow: rgba(43, 65, 216, 0.35);
  --brand-lime: #d4ed5c;
  --brand-lime-hover: #c4dc4b;
  --brand-lime-glow: rgba(212, 237, 92, 0.4);
  
  --bg-dark: #09142b;
  --bg-light: #09142b; /* Mostly Dark */
  --bg-alt: #050a16;   /* Deep Tech Dark */
  --bg-card-dark: rgba(255, 255, 255, 0.03);
  
  --text-dark: #f8fafc;  /* Light text */
  --text-light: #f8fafc;
  --text-muted: #94a3b8; /* Lighter slate gray for dark theme readability */
  --text-muted-light: #cbd5e1;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-dark: rgba(255, 255, 255, 0.12);
  --border-active: #2b41d8;
  
  --success: #22c55e;
  --success-light: rgba(34, 197, 94, 0.15);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.15);
  --warning: #f59e0b;
  
  /* Borders and Shadows */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-tech: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 40px -15px rgba(43, 65, 216, 0.3);
  --shadow-lime: 0 15px 30px -10px rgba(212, 237, 92, 0.35);
  
  /* Glow Effects */
  --glow-blue: 0 0 20px rgba(43, 65, 216, 0.25);
  --glow-lime: 0 0 20px rgba(212, 237, 92, 0.25);
}

/* 1. RESET AND BASE STYLES */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--brand-navy-dark);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-light);
  color: var(--text-light);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Base grid background to enhance tech feeling */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center;
  pointer-events: none;
  z-index: 1;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.max-width-760 {
  max-width: 760px;
}

.max-width-600 {
  max-width: 600px;
}

/* 2. TOPBAR */
.topbar {
  background: #03060f;
  color: var(--text-light);
  padding: 12px 20px;
  font-size: 13px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  position: relative;
}

.topbar-content {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.topbar-badge {
  background: var(--brand-lime);
  color: var(--brand-navy-dark);
  font-weight: 700;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.topbar strong {
  color: var(--brand-lime);
}

/* 3. SITE HEADER & NAVIGATION */
.site-header {
  background: rgba(9, 20, 43, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 999;
  transition: background var(--transition-fast);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo-img {
  height: 38px;
  width: auto;
  transition: transform var(--transition-fast);
}

.logo-img:hover {
  transform: scale(1.02);
}

.nav-cta {
  background: var(--brand-blue);
  color: var(--text-light);
  padding: 10px 22px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(43, 65, 216, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
  background: #1e33be;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(43, 65, 216, 0.4);
}

/* 4. HERO SECTION */
.hero-section {
  background: var(--brand-navy-dark);
  color: var(--text-light);
  padding: 120px 0 140px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(43, 65, 216, 0.25) 0%, rgba(9, 20, 43, 0) 70%);
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 10;
  max-width: 850px;
}

.eyebrow {
  display: inline-block;
  background: rgba(212, 237, 92, 0.08);
  border: 1px solid rgba(212, 237, 92, 0.2);
  color: var(--brand-lime);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 28px;
  box-shadow: 0 0 15px rgba(212, 237, 92, 0.05);
}

.hero-section h1 {
  font-family: 'Red Hat Display', sans-serif;
  font-size: clamp(36px, 6vw, 62px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-section h1 .highlight {
  color: var(--brand-lime);
  background: linear-gradient(120deg, var(--brand-lime) 0%, #e2f97a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  position: relative;
  text-shadow: var(--glow-lime);
}

.hero-sub {
  font-size: clamp(18px, 2.5vw, 21px);
  color: var(--text-muted);
  max-width: 660px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.meta-item:hover {
  border-color: rgba(43, 65, 216, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.meta-icon {
  width: 18px;
  height: 18px;
  color: var(--brand-lime);
}

.hero-cta-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

/* BUTTONS */
.btn-principal {
  display: inline-block;
  background: var(--brand-lime);
  color: var(--brand-navy-dark);
  font-weight: 700;
  font-size: 18px;
  padding: 18px 48px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 15px rgba(212, 237, 92, 0.15);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-principal:hover {
  background: var(--brand-lime-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lime);
}

.glow-btn {
  position: relative;
  overflow: hidden;
}

.glow-btn::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 30%;
  height: 200%;
  background: rgba(255, 255, 255, 0.35);
  transform: rotate(35deg);
  transition: left 0.5s ease;
  pointer-events: none;
}

.glow-btn:hover::after {
  left: 130%;
  transition: left 0.7s ease-in-out;
}

.precio-hero {
  font-size: 15px;
  color: var(--text-muted);
}

.precio-hero .price-highlight {
  color: var(--text-light);
  font-size: 18px;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

.garantia-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: #4ade80;
  border-radius: var(--radius-md);
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
}

.hero-divider {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  transform: rotate(180deg);
}

.hero-divider svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
  height: 60px;
}

.hero-divider svg path {
  fill: var(--bg-light);
}

/* 5. SECTIONS GENERAL */
.section {
  padding: 100px 0;
  position: relative;
  /* Glowing radial background pattern for high-end tech feel */
  background: radial-gradient(circle at 80% 20%, rgba(43, 65, 216, 0.05) 0%, rgba(9, 20, 43, 0) 60%),
              radial-gradient(circle at 20% 80%, rgba(212, 237, 92, 0.03) 0%, rgba(9, 20, 43, 0) 60%);
  background-color: var(--bg-light);
  overflow: hidden;
}

.section-alternate {
  background: radial-gradient(circle at 20% 20%, rgba(43, 65, 216, 0.06) 0%, rgba(5, 10, 22, 0) 60%),
              radial-gradient(circle at 80% 80%, rgba(212, 237, 92, 0.03) 0%, rgba(5, 10, 22, 0) 60%);
  background-color: var(--bg-alt);
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

.section-tag {
  color: var(--brand-lime);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.section-tag.centered {
  text-align: center;
  margin-bottom: 30px;
}

.section-title {
  font-family: 'Red Hat Display', sans-serif;
  font-size: clamp(28px, 4.5vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-light);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-lead {
  color: var(--text-muted);
  font-size: 17px;
}

/* 6. DOLOR / PROBLEMA */
.dolor-lista {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 60px;
}

.card-pain {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--danger);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card-pain:hover {
  transform: translateY(-2px);
  border-color: rgba(239, 68, 68, 0.3);
  box-shadow: var(--shadow-md);
}

.dolor-icon-wrap {
  color: var(--danger);
  background: var(--danger-light);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.15);
}

.dolor-text {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
}

.dolor-text strong {
  color: var(--text-light);
  display: block;
  margin-bottom: 4px;
}

/* ANTES VS DESPUES CONTAINER */
.transform-container {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  margin-top: 20px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.transform-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: center;
}

.transform-card {
  padding: 32px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.transform-card.antes {
  background: rgba(239, 68, 68, 0.03);
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-top: 4px solid var(--danger);
}

.transform-card.despues {
  background: rgba(34, 197, 94, 0.03);
  border: 1px solid rgba(34, 197, 94, 0.15);
  border-top: 4px solid var(--success);
  box-shadow: 0 10px 30px rgba(34, 197, 94, 0.05);
}

.transform-label {
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.antes .transform-label {
  color: var(--danger);
}

.despues .transform-label {
  color: var(--success);
}

.transform-items {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.transform-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
}

.antes .transform-item {
  color: var(--text-muted);
}

.antes .transform-item svg {
  color: var(--danger);
}

.despues .transform-item {
  color: var(--text-light);
}

.despues .transform-item svg {
  color: var(--success);
}

.flecha-medio {
  font-size: 32px;
  color: var(--brand-lime);
  font-weight: 700;
  text-shadow: var(--glow-lime);
}

.flecha-medio .mobile-arrow {
  display: none;
}

/* 7. PASOS / TIMELINE */
.pasos-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  position: relative;
}

.paso-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 32px;
  display: flex;
  gap: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.paso-card:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-md);
  border-color: rgba(43, 65, 216, 0.3);
}

.paso-num {
  width: 48px;
  height: 48px;
  background: var(--brand-blue);
  color: var(--brand-lime);
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 700;
  font-size: 20px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 15px rgba(43, 65, 216, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.paso-content {
  flex-grow: 1;
}

.paso-header {
  margin-bottom: 12px;
}

.paso-tiempo {
  display: inline-block;
  background: var(--brand-blue-glow);
  color: #a5b4fc;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(43, 65, 216, 0.2);
  margin-bottom: 8px;
}

.paso-content h3 {
  font-family: 'Red Hat Display', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-light);
}

.paso-content p {
  color: var(--text-muted);
  font-size: 15px;
}

/* 8. BENEFICIOS GRID */
.beneficios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.beneficio-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 36px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.beneficio-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-lg);
  border-color: rgba(43, 65, 216, 0.35);
}

.beneficio-icon {
  width: 52px;
  height: 52px;
  background: var(--brand-blue-glow);
  color: #a5b4fc;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(43, 65, 216, 0.2);
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(43, 65, 216, 0.1);
}

.beneficio-card h3 {
  font-family: 'Red Hat Display', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 12px;
}

.beneficio-card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.5;
}

/* 9. PARA QUIEN ES */
.para-quien-lista {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pq-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  font-size: 16px;
  color: var(--text-light);
}

.pq-check {
  width: 24px;
  height: 24px;
  background: var(--success);
  color: var(--brand-navy-dark);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
}

.pq-check svg {
  stroke: var(--brand-navy-dark);
}

/* 10. FAQ ACCORDION */
.faq-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-sm);
}

.faq-item.active {
  border-color: var(--brand-blue);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  outline: none;
  gap: 16px;
}

.faq-arrow {
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--brand-lime);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* 11. INSTRUCTOR PREMIUM CARD */
.instructor-card-premium {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 40px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  box-shadow: var(--shadow-md);
  align-items: center;
}

.instructor-avatar-wrap {
  position: relative;
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--brand-blue);
  box-shadow: var(--glow-blue);
}

.instructor-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.instructor-badge-brand {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-navy-dark);
  color: var(--brand-lime);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  white-space: nowrap;
}

.instructor-info-content h3 {
  font-family: 'Red Hat Display', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 4px;
}

.instructor-title {
  color: var(--brand-lime);
  text-shadow: var(--glow-lime);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.instructor-bio p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 16px;
}

.instructor-bio p:last-child {
  margin-bottom: 0;
}

.instructor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.instructor-tag-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted-light);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  transition: border-color var(--transition-fast);
}

.instructor-tag-item:hover {
  border-color: rgba(43, 65, 216, 0.3);
}

/* 12. CHECKOUT SECTION */
.checkout-section {
  background: var(--brand-navy-dark);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.checkout-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(43, 65, 216, 0.25) 0%, rgba(9, 20, 43, 0) 70%);
  pointer-events: none;
}

.checkout-container {
  position: relative;
  z-index: 10;
}

.cupos-alerta {
  display: inline-block;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--warning);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.checkout-title {
  font-family: 'Red Hat Display', sans-serif;
  font-size: clamp(28px, 4.5vw, 42px);
  font-weight: 900;
  margin-bottom: 12px;
}

.checkout-sub {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 40px;
}

/* PRICING CARD */
.precio-card-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: left;
  margin-bottom: 30px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.5);
}

.precio-amount {
  font-family: 'Red Hat Display', sans-serif;
  font-size: clamp(48px, 6vw, 64px);
  font-weight: 900;
  color: var(--text-light);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  text-shadow: var(--glow-lime);
}

.precio-amount .currency {
  font-size: clamp(20px, 3.5vw, 24px);
  font-weight: 500;
  vertical-align: super;
  opacity: 0.8;
  margin-left: 4px;
}

.precio-subtitle-detail {
  color: var(--text-muted-light);
  font-size: 14px;
}

.precio-divider-dash {
  border-top: 1px dashed rgba(255, 255, 255, 0.15);
  margin: 32px 0;
}

.precio-incluye-lista {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.precio-incluye-lista li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
}

.check-box-icon {
  width: 22px;
  height: 22px;
  background: var(--brand-lime);
  color: var(--brand-navy-dark);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 10px rgba(212, 237, 92, 0.3);
}

.btn-checkout-pago {
  display: block;
  background: var(--brand-lime);
  color: var(--brand-navy-dark);
  font-weight: 700;
  font-size: 18px;
  text-align: center;
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 15px rgba(212, 237, 92, 0.15);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-checkout-pago:hover {
  background: var(--brand-lime-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lime);
}

/* SATISFACTION BADGE */
.garantia-footer-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: left;
}

.garantia-badge-icon {
  color: var(--brand-lime);
  background: rgba(212, 237, 92, 0.08);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.garantia-footer-text strong {
  display: block;
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.garantia-footer-text p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 13. SITE FOOTER */
.site-footer {
  background: #03060f;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  padding: 64px 0;
  text-align: center;
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.footer-logo {
  height: 32px;
  width: auto;
  opacity: 0.8;
  margin-bottom: 8px;
}

.site-footer p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-subtext {
  font-size: 12px;
  max-width: 480px;
  opacity: 0.7;
}

/* 14. ANIMATIONS & SCROLL REVEAL CLASS */
.animate-fade-in {
  opacity: 0;
  animation: fadeIn 1s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* High-end Tech Scroll Reveal using Cubic Bezier Curve and subtle scale */
.scroll-reveal {
  opacity: 0;
  transform: translateY(35px) scale(0.98);
  transition: opacity var(--transition-tech), transform var(--transition-tech);
  backface-visibility: hidden;
  will-change: opacity, transform;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* 15. RESPONSIVE DESIGN */
@media (max-width: 900px) {
  .instructor-card-premium {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 30px;
  }
  
  .instructor-avatar-wrap {
    margin: 0 auto;
  }
  
  .instructor-tags {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }
  
  .transform-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .desktop-arrow {
    display: none;
  }
  
  .flecha-medio {
    text-align: center;
  }
  
  .flecha-medio .mobile-arrow {
    display: inline-block;
    transform: rotate(90deg);
  }
  
  .paso-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px;
  }
  
  .paso-header {
    margin-top: 12px;
  }
}

@media (max-width: 600px) {
  .nav-container {
    padding: 12px 16px;
  }
  
  .logo-img {
    height: 30px;
  }
  
  .nav-cta {
    padding: 8px 16px;
    font-size: 13px;
  }
  
  .hero-meta {
    gap: 12px;
  }
  
  .meta-item {
    font-size: 13px;
    padding: 6px 12px;
  }
  
  .precio-card-box {
    padding: 32px 20px;
  }
}