/* Exercice 3 - Flexbox */

.page-ex3 {
  max-width: 900px;
  margin: 30px auto;
  padding: 0 20px;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #2c3e50;
  padding: 15px 25px;
  border-radius: 8px;
}
.logo {
  color: white;
  font-size: 1.3rem;
  font-weight: bold;
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: #ecf0f1;
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 4px;
  transition: background 0.2s;
}
.nav-links a:hover {
  background: #3498db;
}

/* Cartes */
.cards {
  display: flex;
  gap: 20px;
  margin-top: 20px;
}
.card {
  display: flex;
  flex-direction: column;
  background: white;
  border-radius: 8px;
  padding: 20px;
  flex: 1;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.card h3 {
  margin-top: 0;
  color: #2c3e50;
}
.card p {
  flex: 1;
  color: #555;
}
.card-link {
  display: inline-block;
  background: #3498db;
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 5px;
  text-align: center;
  margin-top: auto;
}
.card-link:hover {
  background: #2980b9;
}