.sidebar {
  width: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  padding: 15px;
  background-color: #f9f9f9;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); /* Bayangan untuk keseluruhan kotak */
}

.sidebar h4 {
  color: #333;
  font-size: 18px;
  margin-bottom: 15px;
  border-bottom: 2px solid #00a3d9;
  padding-bottom: 5px;
}

.menu-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu-list li {
  margin-bottom: 8px;
}

.menu-list li a {
  display: block;
  padding: 12px 14px;
  background: linear-gradient(to bottom, #00b5e2, #0099cc);
  color: white;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2); /* Shadow tombol menu */
  transition: all 0.3s ease;
}

.menu-list li a:hover {
  background: linear-gradient(to bottom, #0099cc, #007fad);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.25);
  transform: translateY(-1px);
}

.menu-list li.active a {
  background: linear-gradient(to bottom, #999ca1, #7c8a9e);
  font-weight: bold;
}