"""
Custom CSS styles for Streamlit application
"""


def get_custom_css() -> str:
    """Get custom CSS styles as a string"""
    return """
<style>
    .main-header {
        font-size: 2.5rem;
        font-weight: bold;
        color: #1f77b4;
        text-align: center;
        margin-bottom: 1rem;
        width: 100%;
        display: block;
    }
    
    .subtitle {
        font-size: 1.2rem;
        color: #666;
        text-align: center;
        margin-bottom: 2rem;
        width: 100%;
        display: block;
    }
    
    .session-info {
        background-color: #f0f2f6;
        padding: 10px;
        border-radius: 5px;
        margin-bottom: 20px;
        font-size: 0.9rem;
    }
    
    .user-message {
        background-color: #007bff;
        color: white;
        padding: 12px 16px;
        border-radius: 18px 18px 4px 18px;
        margin: 8px 0;
        margin-left: 20%;
        word-wrap: break-word;
    }
    
    .bot-message {
        background-color: #f1f3f4;
        color: #333;
        padding: 12px 16px;
        border-radius: 18px 18px 18px 4px;
        margin: 8px 0;
        margin-right: 20%;
        word-wrap: break-word;
        border: 1px solid #e0e0e0;
    }
    
    .filter-section {
        margin-bottom: 20px;
        padding: 15px;
        background-color: #f8f9fa;
        border-radius: 8px;
        border: 1px solid #e9ecef;
    }
    
    .filter-title {
        font-weight: bold;
        margin-bottom: 10px;
        color: #495057;
    }
    
    .feedback-section {
        background-color: #f8f9fa;
        padding: 20px;
        border-radius: 10px;
        margin-top: 30px;
        border: 2px solid #dee2e6;
    }
    
    .retrieval-history {
        background-color: #ffffff;
        padding: 15px;
        border-radius: 5px;
        margin: 10px 0;
        border-left: 4px solid #007bff;
    }
    
    .retrieval-distribution-container {
        background-color: #ffffff;
        padding: 25px;
        border-radius: 10px;
        margin: 20px 0;
        border: 2px solid #e0e0e0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    }
    
    .metric-label {
        font-size: 0.9rem;
        color: #555;
        margin-bottom: 5px;
        text-align: center;
    }
    
    .metric-value {
        font-size: 1.8rem;
        font-weight: bold;
        color: #000000;
        text-align: center;
    }
    
    .metric-container {
        text-align: center;
        padding: 10px;
    }
</style>
"""