body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #C9D6FF;
  color: #333;
}

header {
  background: #1d1d1d;
  color: white;
  padding: 1rem;
  display: flex;
  align-items: center;
}

.logo {
  height: 50px;
  margin-right: 1rem;
}

h1 {
  margin: 0;
}

main {
  padding: 2rem;
}

.cursos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.curso {
  background: white;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.curso h2 {
  margin-top: 0;
}

.curso img {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
  max-height: 400px;
  margin-bottom: 1rem;
}

button {
  background: #1d87e4;
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1em;
  transition: background 0.3s;
}

button:hover {
  background: #0f67bb;
}