* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", sans-serif;
  color: #111;
  background-color: #ffffff;
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

.header {
  background: #fff;
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 0;
}

.logo img {
  height: 40px;
}

.menu {
  display: flex;
  gap: 25px;
}

.menu a {
  text-decoration: none;
  color: #111;
  font-weight: 500;
  transition: 0.3s;
}

.menu a:hover {
  color: #1f5fa8;
}

.btn-primary {
  background-color: #1f5fa8;
  color: #fff;
  padding: 10px 18px;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  transition: 0.3s;
}

.btn-primary:hover {
  background-color: #174a85;
}

.btn-secondary {
  border: 1px solid #1f5fa8;
  color: #1f5fa8;
  padding: 10px 18px;
  text-decoration: none;
  border-radius: 4px;
  margin-left: 10px;
}

.footer {
  background: #0b0f17; /* más profundo y tecnológico */
  color: #b8c0cc;      /* gris más elegante */
  padding: 80px 0 30px;
  font-size: 15px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr; /* más peso a la marca */
  gap: 60px;
  align-items: start;
}

.footer strong {
  font-size: 18px;
  color: #ffffff;
  display: inline-block;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer p {
  line-height: 1.7;
  max-width: 420px;
}

.footer h4 {
  color: #ffffff;
  font-size: 14px;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer li {
  margin-bottom: 12px;
}

.footer a {
  color: #9aa4b2;
  text-decoration: none;
  transition: color 0.3s ease, transform 0.3s ease;
}

.footer a:hover {
  color: #ffffff;
  transform: translateX(3px);
}

.footer-bottom {
  text-align: center;
  margin-top: 60px;
  font-size: 16px;
  color: #7d8794;
  border-top: 1px solid #1a2230;
  padding-top: 25px;
}
/* Responsive */

@media (max-width: 900px) {
  .menu {
    display: none;
  }
  .container {
    width: 92%;
  }
  .footer {
    padding: 60px 0 25px;
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer p {
    max-width: 100%;
  }

  .footer nav {
    text-align: left;
  }

  .footer-bottom {
    margin-top: 40px;
    font-size: 14px;
  }
  .menu {
    display: none;
  }
}