/* Layout de base de l'application */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.header {
  background: var(--primary-color);
  color: #fff;
  padding: 1rem;
}
.sidebar {
  background: var(--secondary-color);
  width: 220px;
  min-height: 100vh;
}
.map-container {
  flex: 1;
  min-height: 400px;
}