/* ═══════════════════════════════════════════════════════════
   QuanSphere — Website Glass Light Theme
   Gradiente violeta → azul → mint, glass cards con blur sutil
   ═══════════════════════════════════════════════════════════ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

:root {
  --qs-violet: #7C3AED;
  --qs-violet-soft: #A78BFA;
  --qs-blue: #2563EB;
  --qs-blue-soft: #60A5FA;
  --qs-mint: #14B8A6;
  --qs-mint-soft: #34D3B7;
  --qs-ink: #0B0B2E;
  --qs-ink-2: #1F2547;
  --qs-muted: #4A5170;
  --qs-muted-2: #6B7290;

  --qs-glass-bg: rgba(255, 255, 255, 0.55);
  --qs-glass-bg-strong: rgba(255, 255, 255, 0.72);
  --qs-glass-border: rgba(255, 255, 255, 0.7);
  --qs-glass-border-hover: rgba(124, 58, 237, 0.35);
  --qs-glass-shadow: 0 10px 30px rgba(76, 29, 149, 0.10),
                     inset 0 1px 0 rgba(255, 255, 255, 0.7);
  --qs-glass-shadow-hover: 0 18px 40px rgba(76, 29, 149, 0.16),
                           inset 0 1px 0 rgba(255, 255, 255, 0.8);
  --qs-grad: linear-gradient(90deg, #7C3AED 0%, #2563EB 55%, #14B8A6 100%); /* @kind color */
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  color: var(--qs-ink);
  line-height: 1.6;
  background: #EEF2FF;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Fondo con blobs de color (violeta / azul / mint) */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(circle at 12% 15%, #C4B5FD 0%, transparent 45%),
    radial-gradient(circle at 88% 20%, #93C5FD 0%, transparent 45%),
    radial-gradient(circle at 20% 85%, #A5F3E4 0%, transparent 45%),
    radial-gradient(circle at 80% 90%, #DDD6FE 0%, transparent 50%),
    linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 50%, #ECFEFF 100%);
}

a { color: inherit; text-decoration: none; }
a.link, main a:not(.btn):not(.logo):not(.mobile-menu a) {
  color: var(--qs-violet);
  text-underline-offset: 3px;
}
a.link:hover, main a:not(.btn):not(.logo):hover { color: var(--qs-blue); text-decoration: underline; }

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

/* ─── Contenedores base ─── */
.container, .container-page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}
.container-page { padding: 0 20px 60px; }

/* ─── Utilidad glass ─── */
.glass, .card, .service-card, .pricing-card, .testimonial-card,
.faq-item, .section, .stat-item, .value-item, .example-card,
.workflow, .chatbot, .contact-form-wrapper, .benefits-bar,
.section-block, .last-updated, .intro, .search-box, .category,
.contact-info-box, .cta-section {
  background: var(--qs-glass-bg);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--qs-glass-border);
  border-radius: 20px;
  box-shadow: var(--qs-glass-shadow);
}

/* ─── Texto con gradiente ─── */
.gradient-text, h1 .gradient-text,
.card h2, .card-icon + h2,
.section-header h2, .category-title,
.hero h1, .stat-number, .header-page h1 {
  background: var(--qs-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ─── Botones ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
  text-decoration: none;
  line-height: 1.2;
}
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-block { width: 100%; }

.btn-primary, .btn.btn-primary {
  background: var(--qs-grad);
  color: #fff;
  box-shadow: 0 8px 20px rgba(76, 29, 149, 0.28);
}
.btn-primary:hover { box-shadow: 0 12px 28px rgba(76, 29, 149, 0.38); }

.btn-outline, .btn-secondary {
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(12px);
  border-color: rgba(124,58,237,0.25);
  color: var(--qs-ink);
}
.btn-outline:hover, .btn-secondary:hover {
  background: rgba(255,255,255,0.85);
  border-color: var(--qs-violet);
}

/* ─── Navbar ─── */
.navbar {
  position: sticky; top: 0; z-index: 50;
  padding: 12px 0;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid rgba(255,255,255,0.7);
}
.navbar-container {
  max-width: 1180px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; letter-spacing: .02em; color: var(--qs-ink);
}
.logo-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.9);
  padding: 4px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
  overflow: hidden;
}
.logo-icon img { width: 100%; height: 100%; object-fit: contain; }
.logo span { font-size: 15px; }
.nav-links {
  display: flex; align-items: center; gap: 22px;
}
.nav-links a { font-size: 14px; font-weight: 500; color: var(--qs-ink-2); }
.nav-links a:hover { color: var(--qs-violet); }
.nav-links a.btn { color: #fff; }
.nav-links a.btn-outline { color: var(--qs-ink); }

.mobile-menu-btn {
  display: none;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.9);
  width: 40px; height: 40px; border-radius: 10px;
  align-items: center; justify-content: center; cursor: pointer;
  color: var(--qs-ink);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 14px 20px 18px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.7);
}
.mobile-menu.active { display: flex; }
.mobile-menu a {
  padding: 10px 12px; border-radius: 10px; font-weight: 500; color: var(--qs-ink-2);
}
.mobile-menu a:hover { background: rgba(124,58,237,0.08); color: var(--qs-violet); }
.mobile-menu a.btn { color: #fff; text-align: center; }

/* ─── Hero ─── */
.hero {
  min-height: calc(100vh - 64px); /* 64px ≈ alto del navbar */
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero .container { max-width: 900px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: 999px;
  font-size: 13px; font-weight: 600;
  color: var(--qs-violet);
  margin-bottom: 24px;
  backdrop-filter: blur(12px);
}
.hero-badge i { width: 14px; height: 14px; }
.hero-title, .hero h1 {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--qs-ink);
  margin-bottom: 20px;
}
.hero-title .gradient-text { display: block; }
.hero-description, .hero .description, .hero .tagline {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--qs-muted);
  max-width: 720px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.hero .tagline { color: var(--qs-ink-2); font-weight: 600; margin-bottom: 16px; }
.hero-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.hero-features { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.hero-feature { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--qs-muted); }
.hero-feature i { width: 16px; height: 16px; color: var(--qs-mint); }

/* Hero de sub-páginas (nosotros, faqs, privacidad) */
.header-page {
  text-align: center;
  padding: 70px 20px 50px;
}
.header-page h1 {
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.header-page .subtitle strong { color: var(--qs-ink-2); font-weight: 600; }
.header-page .subtitle, .header-page .company {
  color: var(--qs-muted);
  font-size: clamp(15px, 2vw, 18px);
  max-width: 700px; margin: 0 auto;
}

/* ─── Sección headers ─── */
.section-header { text-align: center; margin-bottom: 40px; max-width: 720px; margin-left: auto; margin-right: auto; }
.section-header h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.section-header p { color: var(--qs-muted); font-size: 16px; }
.section-header.light h2 { color: var(--qs-ink); background: none; -webkit-text-fill-color: currentColor; }

/* ─── Secciones ─── */
section { padding: 60px 0; }
section > .container { padding: 0 20px; }

/* ─── Benefits ─── */
.benefits-bar { padding: 30px; margin: 0 20px 20px; }
.benefits-bar .container { padding: 0; }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}
.benefit-item { text-align: center; padding: 8px; min-width: 0; }
.benefit-item i {
  width: 32px; height: 32px; color: var(--qs-violet); margin-bottom: 10px;
}
.benefit-title { font-weight: 700; color: var(--qs-ink); font-size: 15px; margin-bottom: 4px; }
.benefit-desc { color: var(--qs-muted); font-size: 13px; }

/* ─── Servicios / Pricing / Cards genéricas ─── */
.services-grid, .pricing-grid, .cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: 24px;
  margin-top: 20px;
  width: 100%;
}
.service-card, .pricing-card, .card, .testimonial-card {
  padding: 28px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  position: relative;
  overflow: hidden;
  min-width: 0;
}
.service-card::before, .card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--qs-grad);
}
.service-card:hover, .pricing-card:hover, .card:hover, .testimonial-card:hover {
  transform: translateY(-6px);
  border-color: var(--qs-glass-border-hover);
  box-shadow: var(--qs-glass-shadow-hover);
}
.service-icon, .card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(124,58,237,0.15);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  color: var(--qs-violet); font-size: 28px;
}
.service-icon i { width: 26px; height: 26px; }
.card-icon { font-size: 32px; }
.service-card h3, .pricing-card h3 {
  font-size: 20px; font-weight: 700; margin-bottom: 8px; color: var(--qs-ink);
  letter-spacing: -0.01em;
}
.card h2 { font-size: 22px; font-weight: 800; margin-bottom: 10px; letter-spacing: -0.01em; }
.card p, .service-card p, .pricing-card p, .pricing-desc {
  color: var(--qs-muted); font-size: 15px; line-height: 1.7; margin-bottom: 16px;
}
.card strong { color: var(--qs-ink); }

.service-features, .pricing-features {
  list-style: none; margin: 16px 0; padding: 0;
  display: flex; flex-direction: column; gap: 10px;
}
.service-features li, .pricing-features li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: var(--qs-ink-2);
}
.service-features li i, .pricing-features li i {
  width: 16px; height: 16px; color: var(--qs-mint); flex: 0 0 auto; margin-top: 3px;
}

/* Pricing */
.pricing-card { display: flex; flex-direction: column; }
.pricing-card.popular {
  border: 2px solid transparent;
  background:
    linear-gradient(var(--qs-glass-bg-strong), var(--qs-glass-bg-strong)) padding-box,
    var(--qs-grad) border-box;
  box-shadow: 0 20px 50px rgba(76, 29, 149, 0.20);
}
.popular-badge {
  position: absolute; top: 12px; right: 12px;
  background: var(--qs-grad); color: #fff;
  padding: 4px 12px; border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase;
}
.pricing-price { display: flex; align-items: baseline; gap: 4px; margin: 10px 0 6px; flex-wrap: wrap; }
.pricing-price .price {
  font-size: 34px; font-weight: 800; color: var(--qs-ink);
  background: var(--qs-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1.1;
}
.pricing-price .period { font-size: 14px; color: var(--qs-muted); }
.pricing-card .btn { margin-top: auto; }

/* ─── Process ─── */
.process-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px; margin-top: 20px;
}
.process-step {
  padding: 24px; text-align: left;
  background: var(--qs-glass-bg);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--qs-glass-border);
  border-radius: 18px;
  box-shadow: var(--qs-glass-shadow);
  min-width: 0;
}
.step-number {
  font-size: 32px; font-weight: 800; letter-spacing: -0.02em;
  background: var(--qs-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 8px;
}
.process-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; color: var(--qs-ink); }
.process-step p { color: var(--qs-muted); font-size: 14px; }

/* ─── Testimonios ─── */
.testimonials-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: 24px; margin-top: 20px;
}
.testimonial-card { padding: 24px; }
.testimonial-stars { display: flex; gap: 2px; color: #F59E0B; margin-bottom: 12px; }
.testimonial-stars i { width: 16px; height: 16px; fill: #F59E0B; }
.testimonial-text { font-size: 15px; color: var(--qs-ink-2); line-height: 1.7; margin-bottom: 14px; font-style: italic; }
.testimonial-author .author-name { font-weight: 700; color: var(--qs-ink); font-size: 14px; }
.testimonial-author .author-role { font-size: 13px; color: var(--qs-muted); }

/* ─── FAQ ─── */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 820px; margin: 0 auto; }
.faq-item { padding: 0; overflow: hidden; }
.faq-question, .faq-item > .faq-question {
  width: 100%; background: none; border: 0;
  padding: 18px 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  cursor: pointer; text-align: left;
  font-family: inherit; font-size: 15px; font-weight: 600; color: var(--qs-ink);
  transition: color .2s ease;
}
.faq-question:hover { color: var(--qs-violet); }
.faq-question i { width: 20px; height: 20px; transition: transform .3s ease; color: var(--qs-violet); flex: 0 0 auto; }
.faq-item.active .faq-question i { transform: rotate(180deg); }

.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-item.active .faq-answer {
  max-height: 1200px;
  padding: 0 22px 20px;
}
.faq-answer p { color: var(--qs-muted); font-size: 15px; line-height: 1.7; }

/* FAQ v2 (páginas antiguas con estructura de faqs.html) */
.category { padding: 24px 20px; margin-bottom: 20px; }
.category-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid rgba(124,58,237,0.12); }
.category-icon { font-size: 28px; }
.category-title { font-size: 22px; font-weight: 800; letter-spacing: -0.01em; }

.category .faq-item {
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: 14px;
  margin-bottom: 10px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(76, 29, 149, 0.06);
}
.category .faq-item .faq-question {
  padding: 16px 18px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  font-size: 15px; font-weight: 600; color: var(--qs-ink);
}
.question-text { flex: 1; min-width: 0; }
.toggle-icon {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--qs-grad); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; line-height: 1;
  transition: transform .3s ease;
  flex: 0 0 auto;
}
.category .faq-item.active .toggle-icon { transform: rotate(45deg); }
.category .faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height .4s ease;
}
.category .faq-item.active .faq-answer { max-height: 2000px; }
.answer-content {
  padding: 0 18px 18px;
  color: var(--qs-ink-2); font-size: 15px; line-height: 1.7;
}
.answer-content strong { color: var(--qs-ink); }
.answer-content ul { padding-left: 22px; margin: 10px 0; }
.answer-content li { margin: 6px 0; }

.intro { padding: 22px 26px; margin-bottom: 20px; color: var(--qs-ink-2); font-size: 16px; line-height: 1.7; }
.search-box { padding: 8px; margin-bottom: 24px; }
.search-input {
  width: 100%; padding: 14px 18px;
  border: 0; background: transparent;
  font-family: inherit; font-size: 15px; color: var(--qs-ink);
  outline: none;
}
.search-input::placeholder { color: var(--qs-muted-2); }

/* ─── Nosotros: valores, stats ─── */
.section { padding: 40px 30px; margin-bottom: 30px; }
.values-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px; margin-top: 20px;
}
.value-item {
  padding: 24px 18px; text-align: center;
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: 16px;
  transition: transform .25s ease, box-shadow .25s ease;
  min-width: 0;
}
.value-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(76, 29, 149, 0.14);
}
.value-item .icon { font-size: 34px; display: block; margin-bottom: 10px; }
.value-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; color: var(--qs-ink); }
.value-item p { color: var(--qs-muted); font-size: 13px; line-height: 1.6; }

.stats-section {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px; margin: 30px 0;
}
.stat-item { padding: 26px 18px; text-align: center; min-width: 0; }
.stat-number { font-size: clamp(28px, 4vw, 40px); font-weight: 800; line-height: 1; margin-bottom: 6px; letter-spacing: -0.02em; }
.stat-label { color: var(--qs-muted); font-size: 14px; }

/* ─── CTA ─── */
.cta-section {
  padding: 50px 30px; text-align: center; margin: 40px 0;
  background:
    linear-gradient(var(--qs-glass-bg-strong), var(--qs-glass-bg-strong)) padding-box,
    var(--qs-grad) border-box;
  border: 2px solid transparent;
}
.cta-section h2 { font-size: clamp(24px, 4vw, 34px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; color: var(--qs-ink); }
.cta-section p { color: var(--qs-muted); font-size: 16px; margin-bottom: 22px; max-width: 620px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ─── Contacto ─── */
.contact { padding: 60px 0; }
.contact .container { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.contact-content h2 { font-size: clamp(24px, 4vw, 36px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; color: var(--qs-ink); }
.contact-content p { color: var(--qs-muted); font-size: 16px; margin-bottom: 20px; }
.contact-form-wrapper { padding: 28px; }
.contact-form { display: flex; flex-direction: column; gap: 12px; }
.contact-form input, .contact-form select {
  padding: 14px 16px; border-radius: 12px;
  border: 1px solid rgba(124,58,237,0.2);
  background: rgba(255,255,255,0.85);
  font-family: inherit; font-size: 14px; color: var(--qs-ink);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.contact-form input:focus, .contact-form select:focus {
  border-color: var(--qs-violet);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.contact-form input::placeholder { color: var(--qs-muted-2); }
.form-disclaimer {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--qs-muted); margin-top: 6px;
}
.form-disclaimer i { width: 14px; height: 14px; }

/* ─── Footer ─── */
.footer {
  padding: 50px 0 24px;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.7);
  margin-top: 40px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 32px;
  padding: 0 20px;
  max-width: 1180px; margin: 0 auto;
}
.footer-brand p { color: var(--qs-muted); font-size: 14px; margin-top: 12px; }
.footer h4 { font-size: 14px; font-weight: 700; color: var(--qs-ink); margin-bottom: 12px; letter-spacing: .04em; text-transform: uppercase; }
.footer ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer ul li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--qs-muted); }
.footer ul li i { width: 15px; height: 15px; color: var(--qs-violet); flex: 0 0 auto; }
.footer ul li a { color: var(--qs-muted); }
.footer ul li a:hover { color: var(--qs-violet); }
.footer-bottom {
  text-align: center; padding: 24px 20px 0; margin-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.6);
  color: var(--qs-muted); font-size: 13px;
}

.footer-page {
  text-align: center; padding: 40px 20px; color: var(--qs-muted); font-size: 14px; margin-top: 40px;
}
.footer-page strong { color: var(--qs-ink); }

/* ─── Demo page (workflows, chatbot) ─── */
main > .container > header {
  text-align: center;
  padding: 40px 0 0;
  margin-bottom: 36px;
}
main > .container > header h1 {
  font-size: clamp(26px, 4.5vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  background: var(--qs-grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
main > .container > header .subtitle { color: var(--qs-muted); font-size: 16px; }

.tabs { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
.tab {
  flex: 1 1 180px; min-width: 0;
  padding: 12px 18px;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: 14px;
  color: var(--qs-ink-2); font-family: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: all .22s ease;
}
.tab:hover { transform: translateY(-2px); border-color: rgba(124,58,237,0.35); }
.tab.active {
  color: #fff;
  background: var(--qs-grad); border-color: transparent;
  box-shadow: 0 8px 20px rgba(76, 29, 149, 0.28);
}
.content {
  padding: 26px;
  background: var(--qs-glass-bg);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--qs-glass-border);
  border-radius: 20px;
  box-shadow: var(--qs-glass-shadow);
}
.demo-section { display: none; }
.demo-section.active { display: block; animation: fadeIn .4s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.workflow {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 18px; margin: 14px 0;
  border-radius: 16px;
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.7);
}
.node {
  padding: 12px 18px; min-width: 130px;
  background: rgba(255,255,255,0.75);
  border: 1px solid rgba(255,255,255,0.9);
  border-left: 3px solid var(--qs-violet-soft);
  border-radius: 12px; text-align: center;
  color: var(--qs-ink); font-size: 13px;
}
/* Colores por posición en el flujo: violeta → azul → mint → ámbar */
.workflow .node:nth-of-type(1) { border-left-color: #7C3AED; background: linear-gradient(135deg, rgba(124,58,237,0.14), rgba(255,255,255,0.75)); }
.workflow .node:nth-of-type(2) { border-left-color: #2563EB; background: linear-gradient(135deg, rgba(37,99,235,0.14), rgba(255,255,255,0.75)); }
.workflow .node:nth-of-type(3) { border-left-color: #14B8A6; background: linear-gradient(135deg, rgba(20,184,166,0.16), rgba(255,255,255,0.75)); }
.workflow .node:nth-of-type(4) { border-left-color: #F59E0B; background: linear-gradient(135deg, rgba(245,158,11,0.16), rgba(255,255,255,0.75)); }
.workflow .arrow:nth-of-type(1) { color: #7C3AED; }
.workflow .arrow:nth-of-type(2) { color: #2563EB; }
.workflow .arrow:nth-of-type(3) { color: #14B8A6; }
.node strong { color: var(--qs-ink); }
.node small { color: var(--qs-muted); }
.arrow { font-size: 22px; color: var(--qs-violet); font-weight: bold; }

.active-workflow { border-left: 3px solid var(--qs-mint); position: relative; }
.active-workflow::before {
  content: "✓ Activo"; position: absolute; top: -10px; right: 12px;
  background: var(--qs-mint); color: #fff;
  padding: 3px 12px; border-radius: 999px; font-size: 11px; font-weight: 700; letter-spacing: .06em;
}

.chatbot {
  padding: 20px; max-width: 560px; margin: 20px auto;
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: 20px;
}
#chatMessages { max-height: 360px; overflow-y: auto; padding: 4px; }
.chat-message {
  margin: 8px 0; padding: 10px 16px;
  border-radius: 16px; max-width: 80%; word-break: break-word;
  font-size: 14px; line-height: 1.5;
  animation: slideIn .3s;
  white-space: pre-line;
}
@keyframes slideIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: none; } }
.user-message { background: var(--qs-grad); color: #fff; margin-left: auto; }
.bot-message  { background: rgba(255,255,255,0.85); border: 1px solid rgba(124,58,237,0.15); color: var(--qs-ink-2); }
.input-area { display: flex; gap: 8px; margin-top: 12px; }
.input-area input {
  flex: 1; min-width: 0;
  padding: 12px 16px; border-radius: 999px;
  border: 1px solid rgba(124,58,237,0.2);
  background: rgba(255,255,255,0.9); font-family: inherit; font-size: 14px; color: var(--qs-ink);
  outline: none;
}
.input-area input:focus { border-color: var(--qs-violet); box-shadow: 0 0 0 3px rgba(124,58,237,0.15); }
.input-area button {
  padding: 10px 20px; border-radius: 999px; border: 0;
  background: var(--qs-grad); color: #fff; font-family: inherit; font-weight: 600; font-size: 14px;
  cursor: pointer; transition: transform .18s ease;
}
.input-area button:hover:not(:disabled) { transform: scale(1.03); }
.input-area button:disabled { opacity: .5; cursor: not-allowed; }

.examples { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 16px; }
.example-card {
  padding: 20px; cursor: pointer;
  background: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.75);
  border-radius: 16px;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.example-card:hover { transform: translateY(-3px); border-color: rgba(124,58,237,0.35); box-shadow: 0 10px 24px rgba(76,29,149,0.12); }
.example-card h3 { font-size: 16px; font-weight: 700; color: var(--qs-ink); margin-bottom: 6px; }
.example-card p { color: var(--qs-muted); font-size: 13px; }
.status { display: inline-block; margin-top: 10px; padding: 4px 12px; border-radius: 999px; font-size: 12px; background: rgba(124,58,237,0.1); color: var(--qs-violet); border: 1px solid rgba(124,58,237,0.2); }

.message-counter {
  text-align: center; padding: 6px 10px; margin-bottom: 8px;
  border-radius: 10px; font-size: 12px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(124,58,237,0.15);
  color: var(--qs-muted);
}
.message-counter.warning { background: rgba(245,158,11,0.15); border-color: rgba(245,158,11,0.35); color: #b45309; }
.message-counter.limit   { background: rgba(20,184,166,0.15); border-color: rgba(20,184,166,0.35); color: #0f766e; }

h2 { color: var(--qs-ink); }
.demo-section > h2 {
  font-size: 24px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 8px;
  background: var(--qs-grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
p.section-desc { color: var(--qs-muted); margin-bottom: 14px; }
strong.accent { color: var(--qs-violet); }

/* ─── Privacidad ─── */
.section-block { padding: 24px 26px; margin-bottom: 18px; }
.section-block h2 {
  font-size: 20px; font-weight: 800; margin-bottom: 10px; color: var(--qs-ink);
  letter-spacing: -0.01em;
}
.section-block h3 { font-size: 15px; font-weight: 700; color: var(--qs-ink); margin: 14px 0 6px; }
.section-block p { color: var(--qs-ink-2); font-size: 14.5px; line-height: 1.75; margin-bottom: 10px; }
.section-block ul { padding-left: 22px; margin: 8px 0 14px; }
.section-block li { color: var(--qs-ink-2); font-size: 14.5px; line-height: 1.7; margin: 4px 0; }
.section-block strong { color: var(--qs-ink); }
.last-updated { padding: 16px 22px; margin-bottom: 20px; color: var(--qs-muted); font-size: 14px; }
.last-updated strong { color: var(--qs-ink); }
.important-note {
  margin-top: 12px; padding: 14px 18px;
  background: rgba(20,184,166,0.10);
  border-left: 3px solid var(--qs-mint);
  border-radius: 10px; color: var(--qs-ink-2); font-size: 14px; line-height: 1.7;
}
.important-note strong { color: var(--qs-ink); }

/* ─── WhatsApp floating ─── */
.whatsapp-float {
  position: fixed; bottom: 22px; right: 22px; z-index: 40;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px rgba(37, 211, 102, 0.45);
  transition: transform .2s ease;
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 28px; height: 28px; }

/* ─── Scroll animations (app.js) ─── */
.animate-fade-in-up {
  animation: qsFadeInUp .6s ease forwards;
}
@keyframes qsFadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .animate-fade-in-up { animation: none; opacity: 1 !important; }
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: inline-flex; }
  .contact .container { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  section { padding: 40px 0; }
  .hero { padding: 50px 16px 40px; }
  .header-page { padding: 50px 16px 30px; }
  .benefits-bar { padding: 20px; margin: 0 16px 16px; }
  .services-grid, .pricing-grid, .cards-container, .testimonials-grid, .values-grid, .process-grid, .stats-section { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .section, .section-block { padding: 22px 18px; }
  .service-card, .pricing-card, .card { padding: 22px 18px; }
  .cta-section { padding: 32px 20px; }
  .container-page { padding: 0 16px 40px; }
  .hero-features { gap: 12px 20px; }
  .workflow { flex-direction: column; align-items: stretch; }
  .workflow .arrow { transform: rotate(90deg); align-self: center; }
  .node { min-width: 0; }
}