body {
  background-color: #f0f2f5;
  font-family: 'Poppins', sans-serif;
  color: #333;
}
.navbar {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.card {
  margin-bottom: 20px;
  border: none;
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}
.gradient-bg {
  background: linear-gradient(135deg, #1e90ff, #007bff);
}
.gradient-bg3 {
  background: linear-gradient(135deg, #ffc107, #fd7e14);
}
h2, h5 {
  font-weight: 600;
}
.form-select {
  border-radius: 10px;
}
.card-title {
  font-size: 1.2rem;
  font-weight: 600;
}
.display-6 {
  font-weight: 600;
  font-size: 2rem;
}
.sidebar-button {
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
#sidebarMenu {
  position: fixed;
  top: 0;
  left: -250px;
  width: 250px;
  height: 100%;
  background-color: #343a40;
  transition: left 0.3s;
  z-index: 1050;
  padding-top: 60px;
}
#sidebarMenu a {
  color: white;
  padding: 15px;
  display: block;
  text-decoration: none;
}
#sidebarMenu a:hover {
  background-color: #495057;
}
#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  z-index: 1040;
}
.d-flex {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.d-flex > div {
  margin-right: 10px;
  flex: 1;
}
.d-flex > div:last-child {
  margin-right: 0;
}