/* ==========================================================================
   FaceAut Landing Page - Design System & Modern Responsive Styles
   ========================================================================== */

:root {
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Color Tokens */
  --bg-main: #0B0F19;
  --bg-surface: #111827;
  --bg-surface-hover: #1F2937;
  --bg-surface-alt: #161F30;
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --primary: #4F46E5;
  --primary-light: #6366F1;
  --primary-dark: #3730A3;
  --primary-glow: rgba(79, 70, 229, 0.35);
  
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-rose: #F43F5E;
  --accent-sky: #0EA5E9;
  --accent-purple: #8B5CF6;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.4);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.18s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Background Ambient Glows */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.glow-top {
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, var(--primary-glow) 0%, rgba(79, 70, 229, 0) 70%);
}

.glow-bottom {
  bottom: 200px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography & Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, #A5B4FC 0%, #6366F1 50%, #38BDF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #FFFFFF;
  box-shadow: 0 4px 16px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #7175f7, var(--primary-light));
  box-shadow: 0 6px 22px rgba(79, 70, 229, 0.5);
  transform: translateY(-2px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: #374151;
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: rgba(11, 15, 25, 0.82);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-fast);
}

.nav-container {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #FFFFFF;
}

.brand-icon {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  filter: drop-shadow(0 2px 8px rgba(79, 70, 229, 0.4));
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-name span {
  color: var(--primary-light);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: #FFFFFF;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* Hero Section */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 860px;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  font-size: 0.85rem;
  color: #C7D2FE;
  margin-bottom: 28px;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: pulseGlow 2s infinite ease-in-out;
}

@keyframes pulseGlow {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.3); opacity: 0.5; }
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: #FFFFFF;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 720px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 56px;
}

.btn-hero-primary {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #FFFFFF;
  padding: 14px 30px;
  border-radius: var(--radius-md);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 8px 28px var(--primary-glow);
  transition: all var(--transition-fast);
}

.btn-hero-primary span {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-hero-primary span strong {
  font-size: 1.05rem;
  line-height: 1.2;
}

.btn-hero-primary span small {
  font-size: 0.78rem;
  color: #E0E7FF;
  opacity: 0.9;
}

.btn-hero-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(79, 70, 229, 0.6);
}

.btn-hero-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #FFFFFF;
  padding: 18px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all var(--transition-fast);
}

.btn-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-3px);
}

/* Trust Indicators Row */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  width: 100%;
  padding-top: 36px;
  border-top: 1px solid var(--border-subtle);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  background: rgba(17, 24, 39, 0.4);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.trust-icon {
  font-size: 1.6rem;
}

.trust-item strong {
  display: block;
  font-size: 0.95rem;
  color: #FFFFFF;
}

.trust-item span {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Section Shared Styles */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.section-description {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Installation Guide Cards */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
}

.step-number {
  position: absolute;
  top: 24px;
  right: 28px;
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.05);
  line-height: 1;
}

.step-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #FFFFFF;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 24px;
  flex-grow: 1;
}

.step-card code {
  background: rgba(0, 0, 0, 0.4);
  padding: 2px 6px;
  border-radius: 4px;
  color: #A5B4FC;
  font-family: monospace;
  font-size: 0.9em;
}

.step-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-light);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition-fast);
}

.step-link:hover {
  color: #FFFFFF;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 22px;
}

.bg-indigo { background: rgba(79, 70, 229, 0.15); border: 1px solid rgba(79, 70, 229, 0.3); }
.bg-emerald { background: rgba(16, 185, 129, 0.15); border: 1px solid rgba(16, 185, 129, 0.3); }
.bg-amber { background: rgba(245, 158, 11, 0.15); border: 1px solid rgba(245, 158, 11, 0.3); }
.bg-rose { background: rgba(244, 63, 94, 0.15); border: 1px solid rgba(244, 63, 94, 0.3); }
.bg-sky { background: rgba(14, 165, 233, 0.15); border: 1px solid rgba(14, 165, 233, 0.3); }
.bg-purple { background: rgba(139, 92, 246, 0.15); border: 1px solid rgba(139, 92, 246, 0.3); }

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #FFFFFF;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-fast);
}

.pricing-card.popular {
  border-color: var(--primary-light);
  background: linear-gradient(180deg, var(--bg-surface-alt) 0%, var(--bg-surface) 100%);
  box-shadow: 0 12px 36px rgba(79, 70, 229, 0.25);
  transform: scale(1.03);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #FFFFFF;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.plan-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: #FFFFFF;
}

.pricing-price {
  margin: 20px 0 12px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.pricing-price .currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.pricing-price .amount {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  color: #FFFFFF;
}

.pricing-price .period {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-left: 6px;
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  min-height: 44px;
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-features li {
  font-size: 0.92rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* FAQ Accordion */
.faq-container {
  max-width: 800px;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: rgba(99, 102, 241, 0.4);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #FFFFFF;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.4rem;
  color: var(--primary-light);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 28px;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  transition: max-height 0.3s ease-in-out;
  padding-bottom: 24px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Final CTA Banner */
.cta-banner-section {
  padding: 40px 0 90px;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.2) 0%, rgba(17, 24, 39, 0.9) 100%);
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  box-shadow: 0 16px 48px rgba(79, 70, 229, 0.2);
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.cta-banner p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

/* Site Footer */
.site-footer {
  background: #070A10;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  margin-top: auto;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 380px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 16px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  margin-bottom: 10px;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Download Toast */
.download-toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--accent-emerald);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6);
  z-index: 1000;
  transform: translateY(120px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.download-toast .toast-icon {
  font-size: 1.6rem;
}

.download-toast .toast-content strong {
  display: block;
  font-size: 0.95rem;
  color: #FFFFFF;
}

.download-toast .toast-content span {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .pricing-card.popular {
    transform: none;
  }
  
  .trust-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu, .nav-actions {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }

  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: 24px;
    gap: 18px;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .btn-hero-primary, .btn-hero-secondary {
    width: 100%;
  }
  
  .footer-container {
    flex-direction: column;
  }
  
  .footer-links {
    gap: 40px;
  }
}

/* ==========================================
   Monetización: Anuncios & Afiliados
   ========================================== */

/* Contenedor Banner de Anuncios */
.ad-banner-container {
  margin: 40px auto;
}

.ad-banner-box {
  background: rgba(30, 41, 59, 0.5);
  border: 1px dashed rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  position: relative;
  transition: border-color var(--transition-fast);
}

.ad-banner-box:hover {
  border-color: var(--primary-light);
}

.ad-label {
  position: absolute;
  top: -10px;
  left: 20px;
  background: var(--bg-surface);
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ad-placeholder-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 10px 0;
}

/* Grid de Herramientas Recomendadas */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-top: 36px;
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.tool-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(99, 102, 241, 0.15);
  color: #A5B4FC;
  border: 1px solid rgba(99, 102, 241, 0.3);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
}

.tool-benefits {
  list-style: none;
  padding: 0;
  margin: 16px 0 24px 0;
  flex-grow: 1;
}

.tool-benefits li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
}

.tool-btn {
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-fast);
}

.tool-btn:hover {
  background: var(--primary-color);
  color: #FFFFFF;
  border-color: var(--primary-color);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
}