body {
    font-family: 'Poppins', sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.7;
}

.btn-group .btn {
    font-weight: bold;
    padding: 12px 25px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-group .btn-check:checked + .btn {
    background-color: #007bff;
    color: #fff;
}

.btn-group .btn:hover {
    background-color: #0056b3;
    color: #fff;
}

.pricing-module {
    cursor: pointer;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    padding: 1.5rem;
    border: 2px solid transparent;
    border-radius: 15px;
    position: relative;
}

.pricing-module:hover {
    transform: scale(1.05);
    box-shadow: 0px 6px 16px rgba(0, 123, 255, 0.4);
}

.pricing-module.active {
    border-color: #007bff;
    box-shadow: 0px 8px 20px rgba(0, 123, 255, 0.6);
    background: linear-gradient(135deg, #e0f7ff 0%, #ffffff 100%);
}

.price-tag {
    font-weight: bold;
    font-size: 1.2rem;
    color: #007bff;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 5px 10px;
    border-radius: 15px;
}

.card-title {
    margin-top: 10px;
    font-size: 1.5rem;
    font-weight: bold;
}

.card-text {
    margin-top: 15px;
    font-size: 1rem;
}

.total-summary {
    font-size: 1.8rem;
    color: #007bff;
    font-weight: bold;
}

#totalSummary {
    background-color: #ffffff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.1);
}

h3.text-center {
    font-weight: bold;
    color: #0056b3;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.btn-outline-primary {
    border-color: #007bff;
    color: #007bff;
}

.btn-outline-primary:hover {
    background-color: #007bff;
    color: #fff;
}