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

body {
  font-family: sans-serif;
  background-color: #f5f5f5; /* Gris claro */
  color: #222;
}

/* Encabezado */
header {
  background: linear-gradient(#003366, #001a33);
  padding: 1rem;
  color: white;
}

/* Catálogo */
#catalogo {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 2rem;
}

#catalogo article {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
  transition: box-shadow 0.2s;
  box-shadow: 0 0 4px rgba(0,0,0,0.05);
}

#catalogo article:hover {
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

#catalogo img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* Carrito */
#carrito {
  background-color: #eeeeee; /* Gris aún más suave */
  padding: 2rem;
  border-left: 2px solid #003366;
  height: 100vh;
  overflow-y: auto;
}

#carrito h2 {
  margin-bottom: 1rem;
}

#carrito input[type="text"],
#carrito input[type="number"] {
  width: 100%;
  padding: 0.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

#carrito button {
  background-color: #003366;
  color: white;
  padding: 0.75rem;
  width: 100%;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}

#carrito button:hover {
  background-color: #0055aa;
}

/* Footer */
footer {
  background-color: #ddd;
  text-align: center;
  padding: 1rem;
  font-size: 0.9em;
  color: #555;
}