/* ============================================================
   Kiuman — styles.css
   Dark tech premium | Mobile first
   ============================================================ */

/* --- Variables CSS --- */
:root {
  --bg:          #0A0F1E;
  --surface:     #111827;
  --surface-2:   #1a2235;
  --border:      rgba(255,255,255,0.08);
  --primary:     #00D4FF;
  --primary-dim: rgba(0, 212, 255, 0.15);
  --secondary:   #00FF88;
  --secondary-dim: rgba(0, 255, 136, 0.15);
  --text:        #E5E7EB;
  --text-muted:  #9CA3AF;
  --text-dim:    #6B7280;
  --font:        'Plus Jakarta Sans', sans-serif;
  --radius:      12px;
  --radius-lg:   20px;
  --shadow-glow: 0 0 24px rgba(0, 212, 255, 0.25);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container:   1280px;
  --nav-h:       72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: var(--font); border: none; background: none; }

/* --- Utilidades --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--surface);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.7;
}

.highlight {
  display: inline-block;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Botones --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #007AFF);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-dim);
  transform: translateY(-2px);
}

.btn-green {
  background: linear-gradient(135deg, var(--secondary), #00c87a);
  color: #0A0F1E;
  box-shadow: 0 4px 20px rgba(0, 255, 136, 0.3);
}
.btn-green:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 255, 136, 0.5);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.0625rem;
  border-radius: 10px;
}

/* Tags de tecnología */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-dim);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* Fade-in al scroll */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 15, 30, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 44px;
  width: auto;
  display: block;
}

.logo-img--footer {
  height: 38px;
}

/* Nav links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar__links a {
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.navbar__links a:hover {
  color: #fff;
  background: rgba(255,255,255,0.06);
}

/* CTA navbar */
.navbar__cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  transition: background var(--transition);
}
.hamburger:hover { background: rgba(255,255,255,0.1); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(10, 15, 30, 0.97);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
}
.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  padding: 12px 24px;
  transition: color var(--transition);
}
.mobile-nav a:hover { color: var(--primary); }
.mobile-nav .btn { margin-top: 16px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-h);
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 212, 255, 0.08) 0%, transparent 70%),
              radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 255, 136, 0.05) 0%, transparent 60%);
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 80px 0;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.08);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--secondary);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero__sub {
  font-size: clamp(1rem, 1.5vw, 1.1875rem);
  color: var(--text-muted);
  max-width: 620px;
  line-height: 1.75;
  margin-bottom: 40px;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__stat {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.hero__stat-num {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* ============================================================
   SERVICIOS
   ============================================================ */
.services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}

.service-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.15);
}

.service-card:hover::before {
  opacity: 1;
}

/* Card IA destacada */
.service-card--featured {
  border-color: var(--primary);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
  background: linear-gradient(135deg, var(--surface-2) 0%, rgba(0, 212, 255, 0.05) 100%);
}

.service-card--featured:hover {
  box-shadow: 0 12px 50px rgba(0, 212, 255, 0.35);
}

.service-card__featured-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #0A0F1E;
  font-size: 0.6875rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
  transition: var(--transition);
}

.service-card--featured .service-card__icon {
  background: linear-gradient(135deg, var(--primary-dim), var(--secondary-dim));
}

.service-card:hover .service-card__icon {
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.service-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.3;
}

.service-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================================================
   SECCIÓN IA
   ============================================================ */
.ai-section {
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.ai-section::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.ai-section__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.ai-section__list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 32px 0 40px;
}

.ai-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.ai-item__icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.ai-item__text h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.ai-item__text p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Animación SVG red neuronal */
.brain-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.brain-svg {
  width: 100%;
  max-width: 480px;
  filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.2));
}

.brain-node {
  animation: nodeGlow 3s ease-in-out infinite;
}

.brain-node:nth-child(2) { animation-delay: 0.5s; }
.brain-node:nth-child(3) { animation-delay: 1s; }
.brain-node:nth-child(4) { animation-delay: 1.5s; }
.brain-node:nth-child(5) { animation-delay: 2s; }
.brain-node:nth-child(6) { animation-delay: 2.5s; }

@keyframes nodeGlow {
  0%, 100% { opacity: 0.5; r: 6; }
  50% { opacity: 1; r: 9; }
}

.brain-line {
  animation: lineFlow 4s linear infinite;
}

.brain-line:nth-child(even) { animation-delay: 2s; }

@keyframes lineFlow {
  0% { stroke-dashoffset: 200; opacity: 0.3; }
  50% { opacity: 0.8; }
  100% { stroke-dashoffset: 0; opacity: 0.3; }
}

/* ============================================================
   CASOS DE ÉXITO
   ============================================================ */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.case-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 136, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.case-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.case-card__body {
  padding: 28px;
}

.case-card__industry {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 12px;
}

.case-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.3;
}

.case-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.case-card__metrics {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: rgba(0, 255, 136, 0.05);
  border: 1px solid rgba(0, 255, 136, 0.15);
  border-radius: 10px;
  margin-bottom: 20px;
}

.metric {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
}

.metric__num {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--secondary);
}

.metric__label {
  color: var(--text-muted);
}

.case-testimonial {
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.case-testimonial blockquote {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.65;
  margin-bottom: 12px;
}

.case-testimonial__author {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
}

.case-testimonial__role {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ============================================================
   NOSOTROS
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 56px;
  margin-bottom: 64px;
}

.about-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.about-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

.about-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.about-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.about__differentiators {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 64px;
}

.diff-card {
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(0, 212, 255, 0.03);
  transition: var(--transition);
}

.diff-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: var(--primary-dim);
}

.diff-card__num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 12px;
}

.diff-card h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.diff-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.about__team {
  padding: 40px;
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}

.about__team p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.about__team p strong {
  color: #fff;
}

.about__team-img {
  width: 200px;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 2px solid rgba(0, 212, 255, 0.2);
}

/* ============================================================
   CTA FINAL
   ============================================================ */
.cta-final {
  background: linear-gradient(135deg, #0a1628 0%, #0f2040 50%, #0a1628 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-final::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-final__content {
  position: relative;
  z-index: 1;
  padding: 112px 0;
}

.cta-final h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.15;
}

.cta-final p {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.cta-final__bullets {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 48px;
}

.cta-bullet {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.cta-bullet svg {
  color: var(--secondary);
  flex-shrink: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #070C18;
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}

.footer__brand p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 240px;
}

.footer__socials {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer__social {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer__social:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-dim);
}

.footer__col h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__col li a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__col li a:hover { color: var(--primary); }

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.footer__contact-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.footer__contact-item a {
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__contact-item a:hover { color: var(--primary); }

/* Logo en footer — invertido para que se vea sobre fondo oscuro */
.footer .logo-img--footer {
  filter: brightness(0) invert(1);
}

.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--text-dim);
}

.footer__legal {
  display: flex;
  gap: 20px;
}

.footer__legal a {
  font-size: 0.8125rem;
  color: var(--text-dim);
  transition: color var(--transition);
}

.footer__legal a:hover { color: var(--primary); }

/* ============================================================
   BOTONES FLOTANTES
   ============================================================ */
.float-buttons {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* Volver arriba */
.back-to-top {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(30, 40, 60, 0.9);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 212, 255, 0.1);
}

/* WhatsApp */
.wa-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.wa-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  transition: var(--transition);
  position: relative;
  z-index: 1;
}

.wa-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.7);
}

.wa-ping {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(37, 211, 102, 0.4);
  animation: waPing 2s ease-out infinite;
  pointer-events: none;
}

@keyframes waPing {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.8); opacity: 0; }
}

.wa-tooltip {
  position: absolute;
  right: calc(100% + 14px);
  background: #1a2235;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}

.wa-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: #1a2235;
}

.wa-wrapper:hover .wa-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
   CHATBOT
   ============================================================ */
.chat-bubble {
  position: fixed;
  left: 24px;
  bottom: 24px;
  z-index: 900;
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.chat-bubble__btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #007AFF);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.45);
  transition: var(--transition);
  flex-shrink: 0;
}

.chat-bubble__btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(0, 212, 255, 0.6);
}

.chat-bubble__popup {
  background: #1a2235;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 12px 12px 12px 0;
  padding: 10px 16px;
  font-size: 0.875rem;
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  position: relative;
}

.chat-bubble__popup.show {
  opacity: 1;
  transform: translateY(0);
}

.chat-bubble__badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #EF4444;
  border: 2px solid var(--bg);
}

/* Panel del chatbot */
.chat-panel {
  position: fixed;
  left: 24px;
  bottom: 96px;
  z-index: 901;
  width: 360px;
  height: 480px;
  background: var(--surface);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  transform-origin: bottom left;
}

.chat-panel.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.chat-panel__header {
  background: linear-gradient(135deg, #0f2040, #1a3060);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.15);
  flex-shrink: 0;
}

.chat-panel__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.chat-panel__info { flex: 1; }

.chat-panel__name {
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
}

.chat-panel__status {
  font-size: 0.75rem;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.chat-panel__status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--secondary);
}

.chat-panel__close {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}

.chat-panel__close:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.chat-panel__messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

.chat-panel__messages::-webkit-scrollbar { width: 4px; }
.chat-panel__messages::-webkit-scrollbar-track { background: transparent; }
.chat-panel__messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* Burbujas de mensaje */
.chat-msg {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: 85%;
}

.chat-msg--bot { align-self: flex-start; }
.chat-msg--user { align-self: flex-end; flex-direction: row-reverse; }

.chat-msg__bubble {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.875rem;
  line-height: 1.5;
}

.chat-msg--bot .chat-msg__bubble {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
  color: var(--text);
}

.chat-msg--user .chat-msg__bubble {
  background: linear-gradient(135deg, #00608f, #007AFF);
  color: #fff;
  border-bottom-right-radius: 4px;
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: typingDot 1.4s ease-in-out infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingDot {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* Opciones del chatbot */
.chat-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.chat-option-btn {
  width: 100%;
  text-align: left;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  background: transparent;
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
}

.chat-option-btn:hover {
  background: var(--primary-dim);
  border-color: var(--primary);
  color: var(--primary);
}

/* Input del chatbot */
.chat-panel__footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-input-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.875rem;
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition);
}

.chat-input:focus {
  border-color: var(--primary);
}

.chat-input::placeholder {
  color: var(--text-dim);
}

.chat-submit {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #007AFF);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  transition: var(--transition);
}

.chat-submit:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.chat-link-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 12px;
  background: linear-gradient(135deg, var(--secondary), #00c87a);
  color: #0A0F1E;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 8px;
  margin-top: 4px;
  transition: var(--transition);
}

.chat-link-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1280px) {
  .services__grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
}

@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .ai-section__grid { grid-template-columns: 1fr; gap: 40px; }
  .brain-visual { order: -1; }
  .brain-svg { max-width: 340px; }
  .about__team { grid-template-columns: 1fr; }
  .about__team-img { width: 100%; height: 200px; }
}

@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  .section { padding: 72px 0; }

  .navbar__links, .navbar__cta { display: none; }
  .hamburger { display: flex; }

  .hero h1 { font-size: clamp(1.875rem, 7vw, 2.5rem); }
  .hero__badges { gap: 10px; }
  .hero__stat { padding: 8px 12px; }

  .services__grid { grid-template-columns: 1fr 1fr; gap: 14px; }

  .cases__grid { grid-template-columns: 1fr; }

  .about__grid { grid-template-columns: 1fr; }
  .about__differentiators { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; text-align: center; }

  .brain-visual { width: 100%; }
  .brain-svg { max-width: min(320px, 85vw); width: 100%; }

  .chat-panel {
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 75vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transform-origin: bottom center;
  }

  .chat-bubble { left: 16px; bottom: 16px; }
  .float-buttons { right: 16px; bottom: 16px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section { padding: 56px 0; }
  .services__grid { grid-template-columns: 1fr; }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { width: 100%; justify-content: center; }
  .cta-final__bullets { flex-direction: column; align-items: center; gap: 16px; }
  .service-card { padding: 20px; }

  .ai-section .btn {
    white-space: normal;
    width: 100%;
    justify-content: center;
    text-align: center;
  }
  .brain-svg { max-width: 260px; }
}