/* Exercice 4 - CSS Grid */

.page-ex4 {
  max-width: 900px;
  margin: 30px auto;
  padding: 0 20px;
}

/* Grille responsive */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  margin-bottom: 40px;
}
.grid-cards .card {
  background: #3498db;
  color: white;
  padding: 30px 15px;
  border-radius: 8px;
  text-align: center;
  font-weight: bold;
}

/* Layout Grid Areas */
.page-layout {
  display: grid;
  grid-template-areas:
    "header header"
    "sidebar main"
    "footer footer";
  grid-template-columns: 200px 1fr;
  grid-template-rows: auto 1fr auto;
  gap: 10px;
  min-height: 350px;
}
.header  { grid-area: header;  background: #2c3e50; color: white; padding: 20px; border-radius: 6px; text-align: center; font-weight: bold; }
.sidebar { grid-area: sidebar; background: #8e44ad; color: white; padding: 20px; border-radius: 6px; }
.main    { grid-area: main;    background: #ecf0f1; padding: 20px; border-radius: 6px; }
.footer  { grid-area: footer;  background: #2c3e50; color: white; padding: 15px; border-radius: 6px; text-align: center; }