/* =============================================
   SPI SISTEMAS — Hoja de estilo ÚNICA y completa
   Versión: 3.0 (todo en un solo archivo)
   ============================================= */

/* --- 1) Variables: nuestros frascos de pintura --- */
:root {
  --fondo:       #0D1220;
  --superficie:  #161D2E;
  --teal:        #4CB8A5;
  --menta:       #35E0BE;
  --texto:       #F5F7FA;
  --texto-suave: #8B94A7;
  --borde:       rgba(255, 255, 255, 0.08);
  --fuente-titulo: "Space Grotesk", sans-serif;
  --fuente-texto:  "Inter", sans-serif;
  --fuente-codigo: "JetBrains Mono", monospace;
}

/* --- 2) Reset y base --- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--fondo);
  color: var(--texto);
  font-family: var(--fuente-texto);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--fuente-titulo); line-height: 1.1; }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 48px; }
img { max-width: 100%; display: block; }

::selection { background: var(--teal); color: #06121F; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--menta);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --- 3) Utilidades --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--fuente-codigo); }
.eyebrow { color: var(--menta); font-size: 0.85rem; letter-spacing: 0.08em; margin-bottom: 16px; }
.acento { color: var(--menta); font-style: italic; }

.boton {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.boton-primario { background: var(--teal); color: #06121F; }
.boton-primario:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(76, 184, 165, 0.35);
}
.boton-fantasma {
  color: var(--texto);
  border: 1px solid var(--borde);
  background: rgba(255, 255, 255, 0.03);
}
.boton-fantasma:hover { border-color: var(--teal); transform: translateY(-2px); }

/* --- 4) Encabezado --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 18, 32, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--borde);
}
.header-contenido {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--texto);
  font-family: var(--fuente-titulo);
  font-weight: 700;
  font-size: 1.25rem;
}
.header-logo img { height: 40px; width: auto; }
.logo-suave { color: var(--teal); margin-left: 6px; }

.header-nav ul { display: flex; list-style: none; gap: 28px; }
.header-nav a {
  text-decoration: none;
  color: var(--texto-suave);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.25s ease;
}
.header-nav a:hover, .header-nav a.activa { color: var(--menta); }

/* Hamburguesa: oculta en escritorio */
.menu-check { display: none; }
.menu-boton { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-boton span { width: 24px; height: 2px; background: var(--texto); transition: transform 0.3s ease, opacity 0.3s ease; }

/* --- 5) Portada (hero) --- */
.hero { position: relative; padding: 96px 0 64px; }
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(600px 400px at 80% 20%, rgba(53, 224, 190, 0.12), transparent 60%),
    radial-gradient(500px 350px at 10% 80%, rgba(76, 184, 165, 0.10), transparent 60%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-texto h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.hero-bajada { color: var(--texto-suave); max-width: 54ch; margin-bottom: 32px; font-size: 1.05rem; }
.hero-botones { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-cert { margin-top: 28px; color: var(--texto-suave); font-size: 0.8rem; letter-spacing: 0.06em; }

/* Escudo brillante */
.hero-visual { position: relative; min-height: 420px; display: grid; place-items: center; }
.escudo-glow {
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(53,224,190,0.28), rgba(53,224,190,0.05) 45%, transparent 70%);
  animation: pulso 5s ease-in-out infinite;
}
.escudo {
  position: relative;
  width: min(320px, 70%);
  height: auto;
  filter: drop-shadow(0 0 24px rgba(53, 224, 190, 0.35));
  animation: flotar 6s ease-in-out infinite;
}
.chip {
  position: absolute;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 0.75rem;
  color: var(--menta);
  background: rgba(22, 29, 46, 0.7);
  border: 1px solid rgba(53, 224, 190, 0.3);
  backdrop-filter: blur(8px);
  animation: flotar 7s ease-in-out infinite;
}
.chip-1 { top: 10%; left: 2%; }
.chip-2 { top: 42%; right: 0; animation-delay: 1.2s; }
.chip-3 { bottom: 12%; left: 8%; animation-delay: 2.4s; }

@keyframes flotar { 50% { transform: translateY(-12px); } }
@keyframes pulso  { 50% { opacity: 0.65; } }

/* --- 6) Estadísticas --- */
.stats {
  position: relative;
  z-index: 1;
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat {
  padding: 28px 20px;
  text-align: center;
  border-radius: 16px;
  border: 1px solid var(--borde);
  background: linear-gradient(160deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  backdrop-filter: blur(8px);
}
.stat-numero {
  display: block;
  font-family: var(--fuente-titulo);
  font-weight: 700;
  font-size: 2.2rem;
  color: var(--texto);
  text-shadow: 0 0 18px rgba(53, 224, 190, 0.45);
}
.stat-label { color: var(--texto-suave); font-size: 0.85rem; }

/* --- 7) Servicios (grilla del inicio) --- */
.servicios { padding: 96px 0; }
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.servicio {
  padding: 28px;
  border-radius: 16px;
  border: 1px solid var(--borde);
  background: linear-gradient(160deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.servicio:hover {
  transform: translateY(-4px);
  border-color: rgba(76, 184, 165, 0.5);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}
.servicio-icono {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 12px;
  color: var(--menta);
  border: 1px solid rgba(53, 224, 190, 0.3);
  background: rgba(53, 224, 190, 0.08);
  margin-bottom: 20px;
}
.servicio-icono svg { width: 24px; height: 24px; }
.servicio h3 { font-size: 1.2rem; margin-bottom: 12px; }
.servicio p { color: var(--texto-suave); font-size: 0.95rem; margin-bottom: 20px; }
.servicio-link { color: var(--menta); font-size: 0.85rem; text-decoration: none; }
.servicio-link:hover { text-decoration: underline; }

/* --- 8) Página de servicios (detalle) --- */
.page-hero { padding: 96px 0 48px; }
.page-hero h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); margin-bottom: 20px; }
.page-hero p { color: var(--texto-suave); max-width: 60ch; }

.detalle {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  padding: 56px 0;
  border-top: 1px solid var(--borde);
  scroll-margin-top: 90px;
}
.detalle:first-child { border-top: none; }
.detalle-izq { position: sticky; top: 96px; align-self: start; }
.detalle-numero { display: block; color: var(--menta); font-size: 0.85rem; margin-bottom: 16px; letter-spacing: 0.08em; }
.detalle-izq h2 { font-size: 2rem; margin-top: 16px; margin-bottom: 0; }

.checklist-titulo { color: var(--texto-suave); font-size: 0.8rem; letter-spacing: 0.1em; margin: 24px 0 12px; }
.checklist { list-style: none; display: grid; gap: 10px; margin-bottom: 24px; }
.checklist li { position: relative; padding-left: 28px; color: var(--texto-suave); }
.checklist li::before {
  content: "✓";
  position: absolute; left: 0;
  color: var(--menta);
  font-family: var(--fuente-codigo);
  font-weight: 600;
}
.detalle-ideal { color: var(--texto-suave); font-size: 0.9rem; margin-bottom: 24px; }
.detalle-ideal .mono { color: var(--teal); }

/* --- 9) CTA final --- */
.cta { padding: 32px 0 96px; }
.cta-panel {
  padding: 64px 32px;
  text-align: center;
  border-radius: 24px;
  border: 1px solid rgba(76, 184, 165, 0.35);
  background:
    radial-gradient(400px 200px at 50% 0%, rgba(53, 224, 190, 0.12), transparent 70%),
    var(--superficie);
}
.cta-panel h2 { margin-bottom: 0; }
.cta-panel p { color: var(--texto-suave); max-width: 52ch; margin: 16px auto 32px; }
.cta-panel .hero-botones { justify-content: center; }

/* --- 10) Pie --- */
.footer { border-top: 1px solid var(--borde); padding-top: 64px; background: rgba(0, 0, 0, 0.25); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-marca p { color: var(--texto-suave); font-size: 0.9rem; margin-top: 16px; max-width: 34ch; }
.footer-status { color: var(--menta); font-size: 0.8rem; margin-top: 12px; }
.footer-col h4 { font-size: 0.95rem; margin-bottom: 16px; color: var(--texto); }
.footer-col a, .footer-col p {
  display: block;
  color: var(--texto-suave);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.footer-col a:hover { color: var(--menta); }
.footer-legal {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 20px;
  padding-bottom: 20px;
  border-top: 1px solid var(--borde);
  color: var(--texto-suave);
  font-size: 0.85rem;
}

/* --- 11) Responsive --- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 340px; order: -1; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .menu-boton { display: flex; }
  .header-cta { display: none; }
  .header-nav {
    display: none;
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(13, 18, 32, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--borde);
    padding: 16px 24px 24px;
  }
  .menu-check:checked ~ .header-nav { display: block; }
  .header-nav ul { flex-direction: column; gap: 16px; }
  .menu-check:checked ~ .menu-boton span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-check:checked ~ .menu-boton span:nth-child(2) { opacity: 0; }
  .menu-check:checked ~ .menu-boton span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .detalle { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
  .detalle-izq { position: static; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 12px; }
}

/* --- 12) Accesibilidad --- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}