/* PALETA DE COLORES */
:root {
  --primary: #0077ff;
  --primary-light: #e3f2fd;
  --primary-dark: #005fcc;
  --text: #222;
  --gray: #666;
  --bg: #f5f5f5;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* NAV */
header {
  background: var(--primary);
  color: white;
  padding: 15px 0;
}

.nav {
  max-width: 1100px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.nav ul {
  display: flex;
  gap: 15px;
  list-style: none;
}

.nav a {
  color: white;
  text-decoration: none;
}

.nav a.active {
  font-weight: bold;
  text-decoration: underline;
}

/* HERO */
.hero {
  max-width: 1100px;
  margin: auto;
  padding: 40px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
}

.hero-box {
  background: white;
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* BOTONES */
.btn-primary {
  background: var(--primary);
  padding: 10px 18px;
  border-radius: 4px;
  text-decoration: none;
  color: white;
}

.btn-outline {
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 10px 18px;
  border-radius: 4px;
  text-decoration: none;
}

/* PRODUCTOS / PROYECTOS */
.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

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

.card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.blue-card {
  background: var(--primary-light);
}

/* CONTACTO */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  font-size: 0.85rem;
  color: var(--gray);
}

/* RESPONSIVO */
@media (max-width: 900px) {
  .hero, .contact-grid {
    grid-template-columns: 1fr;
  }

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