:root {
  --bg: #000000;
  --fg: #ffffff;
  --grey: #8a8a8a;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    sans-serif;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.01em;
  line-height: 1.6;
}

/* HEADER - siempre 3 columnas */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 20px 40px;
  background: rgba(43, 43, 43, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-left {
  display: flex;
  justify-content: flex-start;
}
.header-center {
  display: flex;
  justify-content: center;
}
.header-right {
  display: flex;
  justify-content: flex-end;
}

.brand {
  font-size: clamp(18px, 2.5vw, 28px);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg);
  text-decoration: none;
}

.home-btn {
  display: inline-flex;
  align-items: center;
  color: var(--fg);
  opacity: 0.7;
  transition: opacity 0.2s;
  text-decoration: none;
}
.home-btn:hover,
.home-btn.is-active {
  opacity: 1;
}
.home-btn svg {
  width: 22px;
  height: 22px;
}

.cta-outline {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid var(--fg);
  color: var(--fg);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
  transition:
    background 0.2s,
    color 0.2s;
}
.cta-outline:hover {
  background: var(--fg);
  color: var(--bg);
}

/* HERO */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 8rem 40px 5rem;
  text-align: center;
}
.hero-title {
  margin: 0 0 24px;
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 400;
  line-height: 1.1;
}
.hero-body {
  margin: 0 auto;
  max-width: 720px;
  font-size: 17px;
  opacity: 0.9;
}

/* QUIENES SOMOS */
.about {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 40px 6rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.section-kicker {
  text-align: center;
  text-transform: uppercase;
  font-size: 28px;
  letter-spacing: 0.08em;
  color: var(--grey);
  margin: 0 0 32px;
  font-weight: 500;
}
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.two-col p {
  margin: 0 0 1.2em;
}

/* FOOTER */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 48px 40px;
  text-align: center;
  color: var(--grey);
}
.footer-links {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.footer-links a {
  color: var(--grey);
  text-decoration: none;
  font-size: 13px;
}
.footer-links a:hover {
  color: var(--fg);
}
.copyright {
  font-size: 12px;
  margin: 0;
}

/* LEGAL */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 7rem 40px 5rem;
}
.legal h1 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 400;
  margin: 0 0 24px;
}
.legal p {
  opacity: 0.85;
  line-height: 1.7;
}

/* RESPONSIVE */
img,
svg {
  max-width: 100%;
  height: auto;
}

@media (max-width: 1024px) {
  .hero,
  .about {
    padding-left: 32px;
    padding-right: 32px;
  }
  .two-col {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 14px 16px;
  }
  .brand {
    font-size: 16px;
    letter-spacing: 0.14em;
  }
  .cta-outline {
    padding: 8px 14px;
    font-size: 11px;
  }
  .hero {
    padding: 5.5rem 20px 3.5rem;
  }
  .hero-title {
    font-size: clamp(26px, 7vw, 34px);
  }
  .hero-body {
    font-size: 16px;
    text-align: left;
  }
  .about {
    padding: 3rem 20px 4rem;
  }
  .two-col {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .section-kicker {
    font-size: 22px;
  }
  .legal {
    padding: 5rem 20px 4rem;
  }
}

@media (max-width: 380px) {
  .brand {
    font-size: 14px;
  }
  .home-btn svg {
    width: 20px;
    height: 20px;
  }
}