body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa; /* Light grey background */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    flex: 1;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.card {
    border: none; /* Softer look, rely on shadow */
    transition: transform .2s ease-in-out, box-shadow .2s ease-in-out;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,.15) !important;
}

.card-header {
    font-weight: 500;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}
.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.btn-success {
    background-color: #28a745;
    border-color: #28a745;
}
.btn-success:hover {
    background-color: #1e7e34;
    border-color: #1e7e34;
}

.btn-info {
    background-color: #17a2b8;
    border-color: #17a2b8;
}
.btn-info:hover {
    background-color: #117a8b;
    border-color: #117a8b;
}


/* Specific to chatbot results for better visual separation */
#recommendationDetails ul .list-group-item span.badge {
    font-size: 0.9em;
}

/* Footer styling */
footer.bg-light {
    background-color: #e9ecef !important; /* A slightly different shade for footer */
    padding-top: 1rem;
    padding-bottom: 1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2.5rem;
    }
    h1 {
        font-size: 1.75rem;
    }
}

/* Ensure body takes full height for sticky footer */
html, body {
    height: 100%;
}

/* --- Chatbot Interface Styles --- */
#chatbox { 
    height: 400px; 
    overflow-y: auto; 
    border: 1px solid #ccc; 
    padding: 10px; 
    margin-bottom: 15px; 
    background-color: #f9f9f9;
    border-radius: 5px;
}
.chat-message { margin-bottom: 10px; }
.bot-message { text-align: left; }
.user-message { text-align: right; }
.message-bubble { 
    display: inline-block; 
    padding: 8px 12px; 
    border-radius: 15px; 
    max-width: 80%; 
    word-wrap: break-word; /* Ensure long words break */
}
.bot-message .message-bubble { background-color: #e9ecef; color: #333; }
.user-message .message-bubble { background-color: #0d6efd; color: white; }
#userInputArea button.option-button { margin: 3px; }
#userInputArea { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; } /* Added wrap */
#userInputArea input, #userInputArea select { flex-grow: 1; min-width: 150px; } /* Added min-width */
#optionsContainer { display: flex; flex-wrap: wrap; gap: 5px; } /* Styling for button container */
.spinner-border-sm { width: 1rem; height: 1rem; }