:root {
  --azul: #009bdb;
  --azul-hover: #0c71c3;
  --texto: #666;
  --negro: #000;
  --gris-oscuro: #222;
  --gris-claro: #fafafa;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  font-family: "Open Sans", Helvetica, Arial, Lucida, sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: var(--texto);
  background: #fff;
}
h1, h2, h3, h4 { font-family: Hind, Helvetica, Arial, Lucida, sans-serif; line-height: 1.2; margin: 0 0 10px; }
p { margin: 0 0 1em; }
a { color: var(--azul); text-decoration: none; }
a:hover { color: var(--azul-hover); }
img { max-width: 100%; height: auto; }

.wrap { width: 80%; max-width: 1080px; margin: 0 auto; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 10px; top: 10px; z-index: 100; background: #fff; padding: 8px 12px; }

/* Cabecera */
.topbar { height: 25px; background: var(--gris-oscuro); }
.header { position: sticky; top: 0; z-index: 50; background: rgba(0, 0, 0, .92); }
.header__in { display: flex; align-items: center; gap: 24px; min-height: 80px; padding: 10px 0; }
.logo img { display: block; width: 110px; }
.nav { display: flex; flex-wrap: wrap; gap: 6px 26px; margin-left: auto; }
.nav a { color: #fff; font-size: 14px; font-weight: 500; text-transform: uppercase; }
.nav a:hover { color: var(--azul); }
.cta {
  font-family: Hind, Helvetica, Arial, sans-serif;
  font-size: 13px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; text-align: center;
  color: #fff; background: var(--azul); border: 1px solid #fff; padding: 10px 13px 6px;
}
.cta:hover { color: #fff; background: var(--azul-hover); }

/* Portada */
.hero {
  background: #000 url(../img/hero.jpg) center / cover no-repeat;
  min-height: 445px; display: flex; align-items: center; color: #fff;
}
.hero__in { padding: 60px 0; }
.hero h1 { font-size: 46px; font-weight: 600; text-shadow: .08em .08em 0 rgba(0, 0, 0, .3); margin-bottom: 24px; }
.hero p { font-size: 20px; margin-bottom: 24px; }

.btn {
  display: inline-block; font-family: Hind, Helvetica, Arial, sans-serif; font-size: 14px; font-weight: 500;
  color: #fff; background: var(--azul); border-radius: 2px; padding: 6px 14px 4px;
}
.btn:hover { color: #fff; background: var(--azul-hover); }
.btn--lg { font-size: 16px; padding: 10px 24px 8px; }

/* Quiénes somos */
.about { padding: 54px 0; }
.about h2, .contact h2 { font-size: 50px; font-weight: 300; color: var(--azul); margin-bottom: 0; }
.about h3, .contact h3 { font-size: 22px; font-weight: 700; color: var(--azul); margin-bottom: 24px; }

/* Contacto */
.contact { padding: 54px 0; background: var(--gris-claro); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 20px; margin: 30px 0; }
.card { background: #fff; border: 1px solid #eee; border-radius: 6px; padding: 24px; box-shadow: 0 2px 18px rgba(0, 0, 0, .06); }
.card h4 { font-size: 18px; font-weight: 600; color: #333; }
.card p { margin: 0; }

/* Textos legales */
.legal-head { background: var(--gris-claro); padding: 50px 0 40px; text-align: center; }
.legal-head h1 { font-size: 40px; font-weight: 300; color: var(--azul); text-transform: uppercase; margin: 0; }
.legal { padding: 40px 0 60px; }
.legal h2 { font-size: 18px; font-weight: 600; color: #333; margin: 28px 0 10px; }
.legal a { text-decoration: underline; }

/* Pie */
.footer { background: linear-gradient(#000 0%, #303030 100%); color: #fff; padding: 50px 0 20px; }
.footer__in { display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr; gap: 30px; align-items: start; }
.footer__brand img { display: block; width: 130px; margin-bottom: 16px; }
.social { display: flex; gap: 8px; }
.social a { display: flex; width: 32px; height: 32px; align-items: center; justify-content: center; border-radius: 3px; background: rgba(255, 255, 255, .12); }
.social a:hover { background: var(--azul); }
.social svg { width: 18px; height: 18px; fill: #fff; }
.footer__links { display: flex; flex-direction: column; gap: 6px; }
.footer__links a { color: #fff; }
.footer__links a:hover { color: var(--azul); }
.footer__seal { width: 200px; }
.footer__copy { font-size: 12px; margin-top: 36px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .15); }

@media (max-width: 780px) {
  html { scroll-padding-top: 120px; }
  .wrap { width: 88%; }
  .header__in { flex-wrap: wrap; justify-content: space-between; gap: 12px; }
  .nav { order: 3; width: 100%; margin: 0; justify-content: center; }
  .cta { letter-spacing: 1.5px; font-size: 12px; }
  .hero { min-height: 360px; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 17px; }
  .about h2, .contact h2 { font-size: 38px; }
  .legal-head h1 { font-size: 28px; }
  .footer__in { grid-template-columns: 1fr 1fr; }
}