/* ═══════════════════════════════════════════
   GRUPO ZENTRIX — Hoja de estilos principal
   Versión 1.0 | www.grupozentrix.com.mx
═══════════════════════════════════════════ */

/* ─── TOKENS DE DISEÑO ─────────────────── */
:root {
  --color-navy:      #0A2463;
  --color-blue:      #1565C0;
  --color-blue-light:#1E88E5;
  --color-teal:      #00ACC1;
  --color-light:     #F5F7FA;
  --color-white:     #FFFFFF;
  --color-gray:      #637381;
  --color-gray-light:#DFE3E8;
  --color-dark:      #1A1A2E;
  --color-text:      #212B36;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 4px rgba(0,0,0,.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.14);

  --transition: .25s ease;
  --max-width: 1200px;
  --section-pad: 96px 0;
}

/* ─── RESET & BASE ─────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ─── UTILIDADES ───────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.bg-light { background: var(--color-light); }
.bg-navy  { background: var(--color-navy); }

/* ─── BOTONES ──────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .02em;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--color-blue);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(21,101,192,.35);
}
.btn-primary:hover {
  background: var(--color-blue-light);
  box-shadow: 0 6px 24px rgba(21,101,192,.45);
}
.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,.6);
}
.btn-outline:hover { border-color: var(--color-white); background: rgba(255,255,255,.1); }
.btn-full { width: 100%; justify-content: center; }
.btn-nav {
  background: var(--color-blue);
  color: var(--color-white) !important;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: .9rem;
  transition: background var(--transition), transform var(--transition);
}
.btn-nav:hover { background: var(--color-blue-light); transform: translateY(-1px); }

/* ─── SECCIONES ────────────────────────── */
.section { padding: var(--section-pad); }
.section-eyebrow {
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--color-teal);
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-navy);
  margin-bottom: 16px;
}
.section-desc {
  color: var(--color-gray);
  max-width: 560px;
  font-size: 1.05rem;
}
.section-header.centered { text-align: center; }
.section-header.centered .section-desc { margin: 0 auto; }
.section-header.light .section-title { color: var(--color-white); }
.section-header.light .section-desc   { color: rgba(255,255,255,.75); }
.section-header.light .section-eyebrow { color: var(--color-teal); }
.section-header { margin-bottom: 56px; }

.section-grid {
  display: grid;
  gap: 64px;
  align-items: center;
}
.section-grid.two-col { grid-template-columns: 1fr 1fr; }

/* ─── NAVBAR ───────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,.08);
  padding: 12px 0;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -.01em;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.logo-grupo  { color: var(--color-navy); }
.logo-zentrix { color: var(--color-blue); }
.navbar:not(.scrolled) .logo-grupo  { color: var(--color-white); }
.navbar:not(.scrolled) .logo-zentrix { color: rgba(255,255,255,.75); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.9);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-white); }
.navbar.scrolled .nav-links a { color: var(--color-text); }
.navbar.scrolled .nav-links a:hover { color: var(--color-blue); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--color-navy); }

/* ─── HERO ─────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue) 55%, var(--color-teal) 100%);
  z-index: -1;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 80px 24px;
}
.hero-eyebrow {
  display: inline-block;
  background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.9);
  border: 1px solid rgba(255,255,255,.25);
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero-highlight {
  background: linear-gradient(90deg, #7EC8E3, #00E5FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,.8);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-wave {
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  line-height: 0;
}
.hero-wave svg { width: 100%; height: 80px; }

/* ─── QUIÉNES SOMOS ────────────────────── */
.section-text p {
  color: var(--color-gray);
  margin-bottom: 16px;
  font-size: 1.02rem;
}
.stats-row {
  display: flex;
  gap: 40px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--color-gray-light);
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-blue);
  line-height: 1;
}
.stat-label { font-size: .8rem; color: var(--color-gray); margin-top: 4px; }

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  position: relative;
}
.visual-card {
  border-radius: var(--radius-md);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  color: var(--color-white);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition);
}
.visual-card:hover { transform: translateY(-4px); }
.visual-card:last-child { grid-column: span 2; }
.visual-card i { font-size: 2rem; }
.visual-card p { font-weight: 600; font-size: .95rem; line-height: 1.3; }
.vc-blue  { background: linear-gradient(135deg, var(--color-blue), var(--color-blue-light)); }
.vc-teal  { background: linear-gradient(135deg, var(--color-teal), #26C6DA); }
.vc-navy  { background: linear-gradient(135deg, var(--color-navy), var(--color-blue)); }

/* ─── EMPRESAS ─────────────────────────── */
.empresa-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.empresa-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-light);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.empresa-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--color-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.empresa-card[data-color="teal"]::before { background: var(--color-teal); }
.empresa-card[data-color="navy"]::before { background: var(--color-navy); }
.empresa-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.empresa-card:hover::before { transform: scaleX(1); }
.empresa-card.featured {
  background: linear-gradient(160deg, var(--color-navy) 0%, #154360 100%);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}
.empresa-card.featured h3 { color: var(--color-white); }
.empresa-card.featured p  { color: rgba(255,255,255,.8); }
.empresa-card.featured .empresa-list li { color: rgba(255,255,255,.9); }
.empresa-card.featured .empresa-link { color: var(--color-teal); }
.empresa-card.featured .empresa-badge { background: rgba(255,255,255,.15); color: var(--color-white); }

.empresa-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-blue), var(--color-teal));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.4rem;
}
.empresa-card[data-color="teal"] .empresa-icon { background: linear-gradient(135deg, var(--color-teal), #26C6DA); }
.empresa-card[data-color="navy"] .empresa-icon { background: linear-gradient(135deg, var(--color-navy), var(--color-blue)); }
.empresa-card.featured .empresa-icon { background: rgba(255,255,255,.15); }

.empresa-badge {
  display: inline-block;
  background: rgba(21,101,192,.1);
  color: var(--color-blue);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  align-self: flex-start;
}
.empresa-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.3;
}
.empresa-card p { color: var(--color-gray); font-size: .95rem; }
.empresa-list { display: flex; flex-direction: column; gap: 8px; }
.empresa-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  color: var(--color-text);
}
.empresa-list li i { color: var(--color-teal); font-size: .75rem; flex-shrink: 0; }
.empresa-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-blue);
  font-weight: 600;
  font-size: .9rem;
  margin-top: auto;
  transition: gap var(--transition), color var(--transition);
}
.empresa-link:hover { gap: 14px; color: var(--color-blue-light); }

/* ─── SERVICIOS ────────────────────────── */
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.servicio-item {
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.servicio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-blue);
}
.servicio-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, rgba(21,101,192,.1), rgba(0,172,193,.1));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--color-blue);
  margin-bottom: 20px;
}
.servicio-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 10px;
}
.servicio-item p { color: var(--color-gray); font-size: .9rem; }

/* ─── VENTAJAS ─────────────────────────── */
.ventajas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.ventaja-item {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: background var(--transition), transform var(--transition);
}
.ventaja-item:hover { background: rgba(255,255,255,.1); transform: translateY(-4px); }
.ventaja-icon {
  width: 52px; height: 52px;
  background: rgba(0,172,193,.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-teal);
  margin-bottom: 20px;
}
.ventaja-item h4 { font-size: 1rem; font-weight: 700; color: var(--color-white); margin-bottom: 10px; }
.ventaja-item p  { color: rgba(255,255,255,.7); font-size: .9rem; }

/* ─── CLIENTES ─────────────────────────── */
.sectores-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 56px;
}
.sector-item {
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.sector-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-blue); }
.sector-item i { font-size: 1.8rem; color: var(--color-blue); }
.sector-item span { font-size: .85rem; font-weight: 600; color: var(--color-text); }

.testimonial-block {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 40px 48px;
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--color-blue);
}
.testimonial-block blockquote {
  font-size: 1.1rem;
  color: var(--color-text);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 20px;
}
.testimonial-block cite { font-size: .85rem; color: var(--color-gray); font-style: normal; font-weight: 500; }

/* ─── CONTACTO ─────────────────────────── */
.contact-layout { gap: 80px; align-items: start; }
.contact-info .section-title { color: var(--color-navy); }
.contact-info p { color: var(--color-gray); font-size: 1.02rem; margin-bottom: 32px; }
.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-icon {
  width: 44px; height: 44px;
  background: rgba(21,101,192,.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-item div { display: flex; flex-direction: column; gap: 2px; }
.contact-item strong { font-size: .85rem; font-weight: 700; color: var(--color-navy); }
.contact-item span  { font-size: .9rem; color: var(--color-gray); }

/* ─── FORMULARIO ───────────────────────── */
.contact-form-wrapper {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-light);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--color-navy); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .95rem;
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 4px rgba(21,101,192,.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #a0aab4; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: .8rem; color: var(--color-gray); text-align: center; margin-top: 12px; }

/* ─── FOOTER ───────────────────────────── */
.footer { background: var(--color-dark); color: rgba(255,255,255,.75); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 24px 48px;
}
.footer-brand .nav-logo { display: inline-flex; margin-bottom: 16px; }
.footer-brand .logo-grupo  { color: var(--color-white); }
.footer-brand .logo-zentrix { color: rgba(255,255,255,.5); }
.footer-brand p { font-size: .9rem; line-height: 1.6; max-width: 260px; }
.footer-social { display: flex; gap: 12px; margin-top: 24px; }
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  transition: background var(--transition), color var(--transition);
}
.footer-social a:hover { background: var(--color-blue); color: var(--color-white); }
.footer-links h5 {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--color-white);
  margin-bottom: 20px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a, .footer-links span {
  font-size: .9rem;
  color: rgba(255,255,255,.6);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 24px;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p { font-size: .82rem; color: rgba(255,255,255,.45); }
.footer-bottom a { color: rgba(255,255,255,.45); }
.footer-bottom a:hover { color: rgba(255,255,255,.75); }

/* ─── BACK TO TOP ──────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-blue);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 900;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { background: var(--color-blue-light); transform: translateY(-2px); }

/* ─── ANIMACIONES ──────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ─── RESPONSIVE ───────────────────────── */
@media (max-width: 1024px) {
  .empresa-cards      { grid-template-columns: 1fr 1fr; }
  .servicios-grid     { grid-template-columns: 1fr 1fr; }
  .ventajas-grid      { grid-template-columns: 1fr 1fr; }
  .sectores-grid      { grid-template-columns: repeat(4, 1fr); }
  .footer-grid        { grid-template-columns: 1fr 1fr; }
  .section-grid.two-col { grid-template-columns: 1fr; }
  .about-visual { order: -1; }
}

@media (max-width: 768px) {
  :root { --section-pad: 64px 0; }
  .nav-links { display: none; flex-direction: column; position: fixed; inset: 0; background: rgba(10,36,99,.97); justify-content: center; align-items: center; gap: 32px; z-index: 999; }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.2rem; }
  .nav-toggle { display: flex; z-index: 1001; }
  .empresa-cards  { grid-template-columns: 1fr; }
  .servicios-grid { grid-template-columns: 1fr; }
  .ventajas-grid  { grid-template-columns: 1fr; }
  .sectores-grid  { grid-template-columns: repeat(2, 1fr); }
  .footer-grid    { grid-template-columns: 1fr; gap: 32px; }
  .form-row       { grid-template-columns: 1fr; }
  .contact-form-wrapper { padding: 28px 20px; }
  .hero-actions   { flex-direction: column; align-items: flex-start; }
  .stats-row      { gap: 24px; }
  .visual-card:last-child { grid-column: span 1; }
  .about-visual { grid-template-columns: 1fr; }
  .testimonial-block { padding: 28px 24px; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
  .back-to-top { bottom: 20px; right: 20px; }
}

@media (max-width: 480px) {
  .sectores-grid { grid-template-columns: 1fr 1fr; }
}