/* =========================================================
   Servicios Web — Landing institucional
   HTML5 + CSS3 puro, sin dependencias externas
   ========================================================= */

:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #0d9488;
  --accent-soft: rgba(13, 148, 136, 0.10);
  --radius: 14px;
  --max: 1080px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --surface: #111a2e;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --border: #1e293b;
    --accent: #2dd4bf;
    --accent-soft: rgba(45, 212, 191, 0.12);
  }
}

/* ---------- Base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1;
}

h1,
h2 {
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
}

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

/* ---------- Header ---------- */

.site-header {
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 80px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 20px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 16ch;
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 800;
}

.lead {
  max-width: 60ch;
  margin-top: 28px;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
}

/* ---------- Pilares ---------- */

.pillars {
  padding: 16px 0 88px;
}

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

.card {
  padding: 32px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card-num {
  display: block;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

.card h2 {
  margin-bottom: 10px;
  font-size: 1.2rem;
  font-weight: 700;
}

.card p {
  color: var(--muted);
  font-size: 0.97rem;
}

/* ---------- Sobre nosotros ---------- */

.about {
  padding: 80px 0 96px;
  border-top: 1px solid var(--border);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: start;
}

.about h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
}

.about p {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.08rem;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-inner span:first-child {
  color: var(--text);
  font-weight: 600;
}

/* ---------- Responsive: tablet ---------- */

@media (max-width: 900px) {
  .hero {
    padding: 72px 0 64px;
  }

  .grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid .card:last-child {
    grid-column: 1 / -1;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* ---------- Responsive: celular ---------- */

@media (max-width: 600px) {
  .container {
    padding: 0 18px;
  }

  .site-header {
    padding: 22px 0;
  }

  .hero {
    padding: 48px 0 48px;
  }

  .lead {
    margin-top: 20px;
  }

  .pillars {
    padding: 8px 0 64px;
  }

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

  .card {
    padding: 26px 22px;
  }

  .about {
    padding: 56px 0 64px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }
}

/* ---------- Accesibilidad ---------- */

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