/* =====================================================
   Cursos Química Emprende RD — Estilos Globales
   Paleta: Ámbar/Dorado + Cyan + Negro Profundo
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;600;700;800;900&family=Nunito:wght@300;400;500;600;700&display=swap');

/* ─── Variables ──────────────────────────────────────── */
:root {
  --primary:     #F5A623;
  --primary-dark:#C9882A;
  --accent:      #6EC6E8;
  --bg:          #0D0D0D;
  --surface:     #1A1A1A;
  --surface-2:   #242424;
  --border:      rgba(245, 166, 35, 0.2);
  --text:        #E8E8D0;
  --text-muted:  #9A9A88;
  --white:       #FFFFFF;
  --whatsapp:    #25D366;

  --font-heading: 'Exo 2', sans-serif;
  --font-body:    'Nunito', sans-serif;

  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 4px 32px rgba(0,0,0,0.4);
  --glow:        0 0 30px rgba(245,166,35,0.15);
  --glow-accent: 0 0 30px rgba(110,198,232,0.15);

  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* ─── Utilidades ─────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(245,166,35,0.1);
  border: 1px solid rgba(245,166,35,0.3);
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--white);
  margin-bottom: 16px;
}

.section-title span { color: var(--primary); }

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.text-center { text-align: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: 100px;
  padding: 14px 32px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0D0D0D;
  box-shadow: 0 4px 20px rgba(245,166,35,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245,166,35,0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(245,166,35,0.05);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #fff;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
}
.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37,211,102,0.5);
}

/* ─── Animaciones scroll ─────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }

/* ─── Navbar ─────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(13,13,13,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  box-shadow: var(--shadow);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.01em;
}
.nav-logo span { color: var(--primary); }
.nav-logo small {
  display: block;
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); }
.nav-cta { display: flex; align-items: center; gap: 12px; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta .btn-outline { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(13,13,13,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
}

/* ─── Hero ───────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(245,166,35,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 50%, rgba(110,198,232,0.08) 0%, transparent 60%),
    var(--bg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,166,35,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,166,35,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(110,198,232,0.1);
  border: 1px solid rgba(110,198,232,0.3);
  border-radius: 100px;
  padding: 8px 18px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  color: var(--white);
  margin-bottom: 24px;
  line-height: 1.05;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.stat-item {}
.stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ─── Servicios ──────────────────────────────────────── */
.servicios {
  padding: 100px 0;
  background: var(--surface);
}

.servicios-header {
  text-align: center;
  margin-bottom: 60px;
}

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.servicio-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.servicio-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}
.servicio-card:hover::before { transform: scaleX(1); }
.servicio-card:hover {
  border-color: rgba(245,166,35,0.5);
  transform: translateY(-4px);
  box-shadow: var(--glow);
}

.servicio-icon {
  width: 56px;
  height: 56px;
  background: rgba(245,166,35,0.1);
  border: 1px solid rgba(245,166,35,0.3);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}
.servicio-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.servicio-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ─── Beneficios ─────────────────────────────────────── */
.beneficios {
  padding: 100px 0;
}
.beneficios-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.beneficios-text {}
.beneficios-text .section-subtitle { margin: 0; text-align: left; }
.beneficios-list { margin-top: 40px; display: flex; flex-direction: column; gap: 20px; }
.beneficio-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.beneficio-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(245,166,35,0.1);
  border: 1px solid rgba(245,166,35,0.3);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.beneficio-content h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}
.beneficio-content p { font-size: 0.9rem; color: var(--text-muted); }

.beneficios-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
}
.metric-card:first-child {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(245,166,35,0.1), rgba(110,198,232,0.05));
}
.metric-value {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}
.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

@media (max-width: 768px) {
  .beneficios-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* ─── Proceso ────────────────────────────────────────── */
.proceso {
  padding: 100px 0;
  background: var(--surface);
}
.proceso-header { text-align: center; margin-bottom: 60px; }
.proceso-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  position: relative;
}
.proceso-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
}
.step-item {
  text-align: center;
  padding: 20px 16px;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 80px;
  height: 80px;
  background: var(--bg);
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--primary);
  margin: 0 auto 20px;
  box-shadow: var(--glow);
}
.step-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.step-desc { font-size: 0.85rem; color: var(--text-muted); }

/* ─── Testimonios ────────────────────────────────────── */
.testimonios { padding: 100px 0; }
.testimonios-header { text-align: center; margin-bottom: 60px; }
.testimonios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.testimonio-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}
.testimonio-card:hover {
  border-color: rgba(245,166,35,0.4);
  box-shadow: var(--glow);
}
.stars { color: var(--primary); font-size: 1rem; margin-bottom: 16px; letter-spacing: 2px; }
.testimonio-text {
  font-size: 0.95rem;
  color: var(--text);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 24px;
}
.testimonio-author { display: flex; align-items: center; gap: 14px; }
.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  color: #0D0D0D;
}
.author-name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
}
.author-role { font-size: 0.8rem; color: var(--text-muted); }

/* ─── CTA ────────────────────────────────────────────── */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, rgba(245,166,35,0.08) 0%, rgba(110,198,232,0.04) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--white);
  margin-bottom: 16px;
}
.cta-subtitle { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 40px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ─── Contacto ───────────────────────────────────────── */
.contacto { padding: 100px 0; }
.contacto-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contacto-info h2 {
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 16px;
}
.contacto-info p { color: var(--text-muted); margin-bottom: 32px; }
.contact-items { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.contact-item-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(245,166,35,0.1);
  border: 1px solid rgba(245,166,35,0.3);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.contact-item-text h4 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
}
.contact-item-text p { font-size: 0.85rem; color: var(--text-muted); margin-top: 2px; }

.contacto-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(245,166,35,0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }

@media (max-width: 768px) {
  .contacto-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* ─── Footer ─────────────────────────────────────────── */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}
.footer-brand {}
.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-logo span { color: var(--primary); }
.footer-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 24px; max-width: 300px; }
.footer-social { display: flex; gap: 12px; }
.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}
.social-link:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 0.85rem; color: var(--text-muted); }
.footer-legal { display: flex; gap: 24px; }
.footer-legal a { font-size: 0.85rem; color: var(--text-muted); transition: var(--transition); }
.footer-legal a:hover { color: var(--primary); }

@media (max-width: 768px) {
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ─── WhatsApp flotante ───────────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.whatsapp-btn {
  width: 60px;
  height: 60px;
  background: var(--whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.5);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.whatsapp-btn:hover { transform: scale(1.1); box-shadow: 0 8px 32px rgba(37,211,102,0.6); }
.whatsapp-tooltip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 14px;
  font-size: 0.8rem;
  color: var(--text);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(10px);
  transition: var(--transition);
  pointer-events: none;
}
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; transform: translateX(0); }

/* ─── Chat IA flotante ──────────────────────────────── */
.chat-btn {
  position: fixed;
  bottom: 100px;
  right: 28px;
  z-index: 998;
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(245,166,35,0.4);
  transition: var(--transition);
  border: none;
}
.chat-btn:hover { transform: scale(1.1); }

.chat-window {
  position: fixed;
  bottom: 170px;
  right: 28px;
  z-index: 998;
  width: 350px;
  max-height: 480px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.chat-window.open { display: flex; }

.chat-header {
  background: linear-gradient(135deg, rgba(245,166,35,0.15), rgba(110,198,232,0.1));
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.chat-avatar {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.chat-header-info {}
.chat-header-info h4 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
}
.chat-header-info span { font-size: 0.75rem; color: #4ade80; }
.chat-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.chat-msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.87rem;
  line-height: 1.5;
}
.chat-msg.bot {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.chat-msg.user {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0D0D0D;
  font-weight: 600;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-input-area {
  border-top: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  gap: 8px;
}
.chat-input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 10px 16px;
  font-family: var(--font-body);
  font-size: 0.87rem;
  color: var(--text);
  outline: none;
}
.chat-send {
  width: 38px;
  height: 38px;
  background: var(--primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.9rem;
  color: #0D0D0D;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}
.chat-send:hover { background: var(--accent); }
.chat-typing { display: flex; gap: 4px; align-items: center; padding: 4px 0; }
.chat-typing span {
  width: 7px; height: 7px;
  background: var(--primary);
  border-radius: 50%;
  animation: typing 1.2s infinite;
}
.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%,60%,100% { transform: translateY(0); opacity:.4; } 30% { transform: translateY(-6px); opacity:1; } }

/* ─── Blog cards ─────────────────────────────────────── */
.blog-hero {
  padding: 140px 0 60px;
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(245,166,35,0.1) 0%, transparent 70%);
}
.blog-grid {
  padding: 60px 0 100px;
}
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}
.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.article-card:hover {
  border-color: rgba(245,166,35,0.5);
  transform: translateY(-4px);
  box-shadow: var(--glow);
}
.article-thumb {
  height: 200px;
  background: linear-gradient(135deg, rgba(245,166,35,0.15), rgba(110,198,232,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.article-body { padding: 24px; }
.article-tag {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.article-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 10px;
  line-height: 1.3;
}
.article-excerpt { font-size: 0.87rem; color: var(--text-muted); margin-bottom: 20px; }
.article-meta { display: flex; align-items: center; justify-content: space-between; }
.article-date { font-size: 0.8rem; color: var(--text-muted); }
.article-read {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
}

/* ─── Article page ───────────────────────────────────── */
.article-hero {
  padding: 140px 0 60px;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(245,166,35,0.1) 0%, transparent 70%);
}
.article-hero-inner { max-width: 780px; margin: 0 auto; }
.article-content {
  max-width: 780px;
  margin: 0 auto;
  padding: 60px 0 100px;
}
.article-content h2 {
  font-size: 1.5rem;
  color: var(--white);
  margin: 40px 0 16px;
}
.article-content h3 {
  font-size: 1.2rem;
  color: var(--primary);
  margin: 28px 0 12px;
}
.article-content p {
  color: var(--text);
  margin-bottom: 20px;
  line-height: 1.8;
}
.article-content ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 20px;
  color: var(--text);
}
.article-content ul li { margin-bottom: 8px; }
.article-cta-box {
  background: linear-gradient(135deg, rgba(245,166,35,0.1), rgba(110,198,232,0.05));
  border: 1px solid rgba(245,166,35,0.3);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  margin: 40px 0;
}
.article-cta-box h3 { color: var(--white); margin-bottom: 12px; }
.article-cta-box p { color: var(--text-muted); margin-bottom: 24px; }

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-stats { gap: 24px; }
  .proceso-steps::before { display: none; }
  .chat-window { width: calc(100vw - 56px); right: 16px; }
  .whatsapp-float { right: 16px; bottom: 20px; }
  .chat-btn { right: 16px; bottom: 92px; }
}