/* ============================================================
   SOI ESP — Hoja de estilos compartida
   Paleta: Negro #0A0A0A · Blanco #FFFFFF · Naranja #E85D04
   Tipografía: Inter (Google Fonts)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --negro:    #0A0A0A;
  --blanco:   #FFFFFF;
  --naranja:  #E85D04;
  --naranja-dark: #C44D00;
  --gris-claro: #F5F4F2;
  --gris-medio: #E8E6E2;
  --gris-texto: #555555;
  --gris-suave: #888888;
  --nav-height: 72px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--blanco);
  color: var(--negro);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(10,10,10,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  z-index: 1000;
}

.nav-logo {
  background: rgba(255,255,255,0.95);
  padding: 5px 12px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo img {
  height: 28px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blanco);
}

.nav-cta {
  background: var(--naranja);
  color: var(--blanco) !important;
  padding: 10px 22px;
  border-radius: 6px;
  font-weight: 600 !important;
  font-size: 14px !important;
  transition: background 0.2s !important;
}

.nav-cta:hover {
  background: var(--naranja-dark) !important;
  color: var(--blanco) !important;
}

/* ── BOTONES ── */
.btn-primary {
  display: inline-block;
  background: var(--naranja);
  color: var(--blanco);
  font-size: 16px;
  font-weight: 700;
  padding: 16px 36px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  background: var(--naranja-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--naranja);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 0;
  border: none;
  cursor: pointer;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}

.btn-secondary::after {
  content: ' →';
}

.btn-secondary:hover { color: var(--naranja-dark); }

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--blanco);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 8px;
  border: 2px solid rgba(255,255,255,0.3);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.btn-outline:hover {
  border-color: var(--blanco);
  background: rgba(255,255,255,0.06);
}

/* ── SECCIONES ── */
section {
  padding: 96px 40px;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
}

.section-dark {
  background: var(--negro);
  color: var(--blanco);
}

.section-light {
  background: var(--blanco);
  color: var(--negro);
}

.section-gray {
  background: var(--gris-claro);
  color: var(--negro);
}

/* ── TIPOGRAFÍA ── */
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--naranja);
  margin-bottom: 16px;
  display: block;
}

.eyebrow-white {
  color: rgba(255,255,255,0.5);
}

h1, .h1 {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

h2, .h2 {
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

h3, .h3 {
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

h4, .h4 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
}

.lead {
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.65;
  color: var(--gris-texto);
}

.lead-white {
  color: rgba(255,255,255,0.65);
}

/* ── GRID UTILITIES ── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ── CARDS ── */
.card {
  background: var(--blanco);
  border-radius: 16px;
  padding: 36px 32px;
  border: 1px solid var(--gris-medio);
}

.card-dark {
  background: #161616;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 36px 32px;
}

/* ── BADGE / NÚMERO ── */
.badge-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--naranja);
  color: var(--blanco);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
}

/* ── SEPARADOR ── */
.divider {
  width: 48px;
  height: 4px;
  background: var(--naranja);
  border-radius: 2px;
  margin: 24px 0;
}

/* ── FOOTER ── */
footer {
  background: var(--negro);
  color: rgba(255,255,255,0.4);
  padding: 40px;
  text-align: center;
  font-size: 13px;
}

footer a {
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

footer a:hover { color: var(--blanco); }

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-logo img {
  height: 28px;
  width: auto;
  opacity: 0.5;
}

/* ── UTILIDADES ── */
.text-naranja { color: var(--naranja); }
.text-center  { text-align: center; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mt-64 { margin-top: 64px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }
.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  nav { padding: 0 24px; }
  section { padding: 72px 24px; }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .nav-links { display: none; }

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

@media (max-width: 640px) {
  h1, .h1 { font-size: 32px; }
  h2, .h2 { font-size: 26px; }
  section { padding: 56px 20px; }
}