/* Reset and Base Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    color: #333;
}

.container {
    max-width: 970px;
    margin: 20px auto;
    padding: 20px;
}

.description, .input-group, #result, .extra-info {
    background: #ffffff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
    padding: 10px 0;
}

.input-group {
    padding: 20px;
    margin-bottom: 20px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #495057;
}

select, input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 16px;
    margin-bottom: 15px;
    background-color: #fff;
}

select:focus, input:focus {
    outline: none;
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

button {
    background-color: #0d6efd;
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
    font-weight: 600;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #0b5ed7;
}

#result {
    margin-top: 20px;
    padding: 15px;
    text-align: center;
}

#result p {
    margin: 10px 0;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .container {
        margin: 10px;
        padding: 15px;
    }
    
    .input-group {
        padding: 15px;
    }
}