/* Fuente base */
:root {
  --bg: #0f1223;
  --card: #171a2e;
  --muted: #8892b0;
  --text: #e6e8f0;
  --primary: #4f46e5;
  --primary-600: #4338ca;
  --accent: #06b6d4;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: linear-gradient(180deg, #0b0e1a 0%, var(--bg) 60%);
  color: var(--text);
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background: rgba(15, 18, 35, 0.6);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 20;
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-name { font-weight: 700; letter-spacing: 0.2px; }
.logo { width: 28px; height: 28px; }

.nav a {
  color: var(--text);
  text-decoration: none;
  margin-left: 16px;
  opacity: 0.9;
}
.nav a:hover { opacity: 1; }

.hero {
  padding: 64px 0 24px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: center;
}
.hero h1 {
  font-size: 40px;
  line-height: 1.15;
  margin: 0 0 12px 0;
}
.subtitle {
  color: var(--muted);
  margin: 0 0 20px 0;
}
.cta-group { display: flex; gap: 12px; align-items: center; }
.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}
.btn.primary { background: var(--primary); color: white; }
.btn.primary:hover { background: var(--primary-600); }
.btn.ghost { border: 1px solid rgba(255,255,255,0.18); color: var(--text); }
.btn.ghost:hover { border-color: rgba(255,255,255,0.35); }
.kpi { color: var(--muted); margin-right: 12px; }
.mockup { width: 100%; border-radius: 16px; box-shadow: 0 10px 40px rgba(0,0,0,0.45); }

section { padding: 28px 0; }
.features h2, .screens h2, .install h2, .faq h2, .contact h2 { margin-top: 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 16px;
}

.screens-subtitle {
  text-align: center;
  color: var(--muted);
  margin-bottom: 30px;
}
.screens-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.screen-item {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 15px;
  text-align: center;
  transition: transform 0.2s ease;
}
.screen-item:hover {
  transform: translateY(-5px);
}
.screen-item img {
  width: 100%; 
  border-radius: 8px; 
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 12px;
}
.screen-item h4 {
  margin: 0 0 8px 0;
  color: var(--primary);
  font-size: 16px;
}
.screen-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.install-steps { line-height: 1.8; }
.note { color: var(--muted); }

details { background: var(--card); border: 1px solid rgba(255,255,255,0.06); padding: 12px 14px; border-radius: 10px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }

.use-cases {
  background: var(--card);
  border-radius: 20px;
  margin: 20px 0;
}
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.use-case {
  background: var(--bg);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}
.use-case h3 {
  margin: 0 0 10px 0;
  color: var(--primary);
}

.testimonials {
  background: linear-gradient(135deg, var(--card) 0%, rgba(79, 70, 229, 0.1) 100%);
  border-radius: 20px;
  margin: 20px 0;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.testimonial {
  background: var(--bg);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 20px;
}
.testimonial p {
  font-style: italic;
  margin: 0 0 15px 0;
  color: var(--text);
}
.author strong {
  color: var(--primary);
  display: block;
  margin-bottom: 5px;
}
.author span {
  color: var(--muted);
  font-size: 14px;
}

.contact { text-align: center; }
.final-cta {
  margin-top: 20px;
}
.cta-note {
  color: var(--muted);
  font-size: 14px;
  margin: 10px 0 0 0;
}

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 18px 0 28px;
}
.footer-inner { display: flex; align-items: center; justify-content: space-between; }

@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr 1fr; }
  .screens-grid { grid-template-columns: repeat(2, 1fr); }
  .use-cases-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .screens-grid { grid-template-columns: 1fr; }
  .use-cases-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
}