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

/* BASE */
body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

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

/* HEADER */
.header {
  background: #ffffff46;
  color: rgb(0, 0, 0);
  padding: 1rem 0;
}

.header nav a {
  color: rgb(4, 1, 14);
  margin: 0 10px;
  text-decoration: none;
}

/* HERO */
.hero {
  background: #f5f5f5;
  text-align: center;
  padding: 4rem 0;
}

/* GRID RESPONSIVE AUTOMÁTICO */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  padding: 3rem 0;
}

/* TARJETAS */
.card {
  background: #eaeaea;
  padding: 2rem;
  text-align: center;
}

/* FOOTER */
.footer {
  background: #111;
  color: white;
  text-align: center;
  padding: 1rem;
}

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