/* =========================================================
   IntegralisTech — Hoja de estilos principal
   Paleta: #0F172A (azul oscuro) · #2563EB (azul) · #F1650C (naranja marca)
           #FFFFFF (blanco) · #F8FAFC (gris claro)
   ========================================================= */

:root {
  --dark: #0F172A;
  --dark-soft: #1E293B;
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-light: #60A5FA;
  --orange: #F1650C;
  --orange-dark: #D9560A;
  --white: #FFFFFF;
  --gray-light: #F8FAFC;
  --gray-mid: #E2E8F0;
  --text-muted: #64748B;
  --radius: 14px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.18);
  --container: 1180px;
  --transition: 0.25s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "Inter", system-ui, -apple-system, Arial, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; }

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

.section { padding: 96px 0; }
.section-alt { background: var(--gray-light); }

.section-tag {
  display: inline-block;
  color: var(--orange);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-lead {
  color: var(--text-muted);
  font-size: 1.08rem;
  max-width: 720px;
  margin-bottom: 48px;
}

.center { text-align: center; margin-left: auto; margin-right: auto; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 32px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.98rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(37, 99, 235, 0.45); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--white); transform: translateY(-2px); }

.btn-block { width: 100%; }

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.0);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}
.header.is-scrolled {
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 40px; width: auto; }
.logo-word { display: none; }

.nav {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav a {
  color: var(--white);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 0;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--orange);
  transition: width var(--transition);
}
.nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 18px; }
.header-phone { color: var(--white); font-weight: 600; font-size: 0.92rem; display: flex; align-items: center; gap: 8px; }

.nav-toggle {
  display: none;
  background: transparent;
  width: 40px; height: 40px;
  position: relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: "";
  display: block;
  position: absolute;
  left: 8px; right: 8px;
  height: 2px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle span { top: 19px; }
.nav-toggle span::before { top: -8px; }
.nav-toggle span::after { top: 8px; }
.nav-toggle.active span { background: transparent; }
.nav-toggle.active span::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span::after { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, var(--dark) 0%, #14213D 55%, #0B1220 100%);
  overflow: hidden;
  padding-top: 82px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 60% 40%, black 40%, transparent 90%);
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  width: 620px; height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.35) 0%, rgba(37,99,235,0) 70%);
  top: -180px; right: -160px;
  pointer-events: none;
}
.hero-glow.orange {
  background: radial-gradient(circle, rgba(241,101,12,0.25) 0%, rgba(241,101,12,0) 70%);
  width: 480px; height: 480px;
  bottom: -200px; left: -140px; top: auto; right: auto;
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  padding-top: 60px;
  padding-bottom: 60px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue-light);
  background: rgba(37,99,235,0.12);
  border: 1px solid rgba(37,99,235,0.3);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}
.hero h1 {
  color: var(--white);
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -1px;
  margin-bottom: 22px;
}
.hero h1 span { color: var(--blue-light); }
.hero-subtitle {
  color: #CBD5E1;
  font-size: 1.15rem;
  max-width: 560px;
  margin-bottom: 34px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 46px; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}
.hero-trust div { color: #94A3B8; font-size: 0.86rem; display: flex; align-items: center; gap: 8px; }
.hero-trust strong { color: var(--white); display: block; font-size: 1.5rem; font-weight: 800; }

.hero-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(6px);
}
.hero-card ul { display: flex; flex-direction: column; gap: 18px; }
.hero-card li { display: flex; gap: 14px; align-items: flex-start; color: #E2E8F0; font-size: 0.96rem; }
.hero-card .ico {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(37,99,235,0.18);
  color: var(--blue-light);
  font-weight: 800;
}

/* ---------- Servicios ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 26px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--gray-mid);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37,99,235,0.25);
}
.service-icon {
  width: 54px; height: 54px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: var(--white);
}
.service-card:nth-child(3n+2) .service-icon,
.service-card:nth-child(6) .service-icon { background: linear-gradient(135deg, var(--orange), var(--orange-dark)); }
.service-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.service-card p { color: var(--text-muted); font-size: 0.96rem; margin-bottom: 16px; }
.service-card ul li {
  font-size: 0.92rem;
  color: var(--dark-soft);
  padding-left: 20px;
  position: relative;
  margin-bottom: 8px;
}
.service-card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--blue);
}
.service-card:nth-child(3n+2) ul li::before,
.service-card:nth-child(6) ul li::before { background: var(--orange); }

/* ---------- Por qué elegirnos ---------- */
.why {
  background: var(--dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.why::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(37,99,235,0.18), transparent 55%);
}
.why .section-title { color: var(--white); }
.why .section-lead { color: #94A3B8; }
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  position: relative;
}
.why-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 28px;
  transition: background var(--transition), transform var(--transition);
}
.why-item:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
.why-item .num {
  color: var(--orange);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 1px;
  margin-bottom: 10px;
  display: block;
}
.why-item h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 8px; }
.why-item p { color: #94A3B8; font-size: 0.92rem; }

/* ---------- Proceso ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.process-step {
  position: relative;
  background: var(--white);
  border-radius: var(--radius);
  padding: 34px 26px;
  border: 1px solid var(--gray-mid);
  text-align: left;
}
.process-step .step-num {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  font-weight: 800;
  font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.process-step h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { color: var(--text-muted); font-size: 0.92rem; }
.process-arrow {
  display: none;
}

/* ---------- Auditorías ---------- */
.audit {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: var(--white);
  border-radius: 28px;
  padding: 64px 48px;
  margin: 0 auto;
  max-width: var(--container);
  position: relative;
  overflow: hidden;
}
.audit::after {
  content: "";
  position: absolute;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  right: -100px; top: -120px;
}
.audit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  position: relative;
  z-index: 2;
}
.audit .section-tag { color: #BFDBFE; }
.audit h2 { color: var(--white); }
.audit p.section-lead { color: #DBEAFE; }
.audit-list { display: flex; flex-direction: column; gap: 16px; }
.audit-list li {
  display: flex; align-items: flex-start; gap: 14px;
  background: rgba(255,255,255,0.08);
  padding: 16px 18px;
  border-radius: 12px;
  font-size: 0.95rem;
}
.audit-list .ico {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-weight: 800;
}

/* ---------- Contacto ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.contact-info h2 { color: var(--dark); }
.contact-info-list { display: flex; flex-direction: column; gap: 22px; margin-top: 32px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-item .ico {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--white);
  border: 1px solid var(--gray-mid);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue);
  flex-shrink: 0;
}
.contact-info-item h3 { font-size: 1rem; font-weight: 700; margin-bottom: 2px; }
.contact-info-item p, .contact-info-item a { color: var(--text-muted); font-size: 0.94rem; }
.contact-info-item a:hover { color: var(--blue); }

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-mid);
  border-radius: var(--radius);
  padding: 38px;
  box-shadow: var(--shadow-sm);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--dark-soft);
  margin-bottom: 7px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1.5px solid var(--gray-mid);
  border-radius: 9px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--dark);
  background: var(--gray-light);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.12);
  background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.82rem; color: var(--text-muted); margin-top: 14px; }
.form-status { margin-top: 16px; font-size: 0.92rem; font-weight: 600; display: none; }
.form-status.success { display: block; color: #15803D; }
.form-status.error { display: block; color: #B91C1C; }

/* ---------- CTA final ---------- */
.cta-final {
  background: var(--dark);
  color: var(--white);
  text-align: center;
  padding: 90px 0;
}
.cta-final h2 { color: var(--white); font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 16px; }
.cta-final p { color: #94A3B8; max-width: 560px; margin: 0 auto 32px; }

/* ---------- Footer ---------- */
.footer {
  background: #0B1220;
  color: #94A3B8;
  padding: 56px 0 26px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand img { height: 34px; margin-bottom: 14px; }
.footer-brand p { font-size: 0.9rem; max-width: 320px; }
.footer h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; font-size: 0.9rem; }
.footer ul li a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 0.85rem;
}

/* ---------- Animaciones ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Botón volver arriba ---------- */
.back-to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 900;
  font-size: 1.2rem;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-card { margin-top: 8px; }
  .audit-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 780px) {
  .section { padding: 68px 0; }
  .nav { position: fixed; top: 82px; left: 0; right: 0; background: var(--dark); flex-direction: column; align-items: flex-start; padding: 24px; gap: 4px; transform: translateY(-140%); transition: transform var(--transition); max-height: calc(100vh - 82px); overflow-y: auto; }
  .nav.open { transform: translateY(0); }
  .nav a { display: block; width: 100%; padding: 14px 4px; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .header-phone { display: none; }
  .nav-toggle { display: block; }
  .hero-trust { gap: 20px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .audit { padding: 40px 24px; border-radius: 20px; }
}

@media (max-width: 480px) {
  .btn { width: 100%; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}