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

body {
  margin: 0;
  padding: 0;
}

.layout {
  display: grid;
  grid-template-areas:
    "nav nav"
    "aside productos"
    "footer footer";
  grid-template-columns: 250px 1fr;
  min-height: 100vh;
  font-family: Arial, sans-serif;
}


.navbar {
  grid-area: nav;
  background: #2c5f7c;
  color: white;
  padding: 0.6rem;
  text-align: center;
}

.navbar h1 {
  font-size: 1.2rem;
  margin: 0;
}


.sidebar {
  grid-area: aside;
  background: #e8e8e8;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sidebar h2 {
  font-size: 1.1rem;
  margin: 0;
  color: #333;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.sidebar li {
  color: #666;
  font-size: 0.95rem;
}

.productos {
  grid-area: productos;
  padding: 1.5rem;
  background: #d9d9d9;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.card {
  background: white;
  border: none;
  border-radius: 3px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card img {
  width: 100%;
  border-radius: 3px;
  margin-bottom: 0.5rem;
}

.card h3 {
  margin: 0.5rem 0;
  font-size: 1rem;
  color: #333;
}

.precio {
  font-weight: normal;
  color: #666;
  margin: 0.3rem 0;
}

button {
  padding: .5rem;
  background: #2c5f7c;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background: #1e4158;
}


.footer {
  grid-area: footer;
  background: #2c5f7c;
  color: white;
  text-align: center;
  padding: 0.6rem;
}

.footer p {
  margin: 0;
  font-size: 0.9rem;
}


@media (max-width: 768px) {
  .layout {
    grid-template-areas:
      "nav"
      "aside"
      "productos"
      "footer";
    grid-template-columns: 1fr;
  }
}