body {
    background-color: #f0f4f8; 
    font-family: 'Arial', sans-serif;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.2);
}

.container {
    background-color: #ffffff; 
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,.1);
    padding: 30px; 
}

.container h1 {
    color: #343a40;
}

.container h2 {
    margin-top: 30px;
    color: #007bff;
}

.input-group {
    max-width: 600px;
    margin: 0 auto;
}

.input-group input {
    transition: border-color 0.3s;
}

.input-group input:focus {
    border-color: #28a745; 
}

.list-group-item {
    transition: background-color 0.3s, transform 0.2s, opacity 0.5s ease-in-out;
}

.list-group-item:hover {
    background-color: #e9ecef; 
}

footer {
    border-top: 1px solid #dee2e6;
}

.btn-danger {
    display: block;
    margin: 20px auto;
}

input[type=text]::placeholder {
   color: #6c757d; 
   opacity: 1; 
}

@media (max-width: 576px) {
   .input-group {
       width: 100%;
   }
}

.expired {
   color: red;
}
.near-expiry {
   color: orange;
}
.fresh {
   color: blue;
}