body {
    font-family: 'Montserrat', sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.form-container {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 450px;
}

h2, p {
    text-align: center;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #555;
}

.amount-options {
    display: flex;
    justify-content: space-around;
    gap: 10px;
}

.amount-options input[type="radio"] {
    display: none; /* Hide the actual radio button */
}

.amount-options label {
    display: block;
    background-color: #e9e9e9;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.3s;
    border: 1px solid #ddd;
    font-weight: normal;
}

.amount-options input[type="radio"]:checked + label {
    background-color: #007bff; /* Primary color for active state */
    color: white;
    border-color: #0056b3;
}

input[type="text"],
input[type="email"],
input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box; /* Ensures padding doesn't increase width */
    margin-top: 5px;
}

input[type="number"][disabled] {
    background-color: #f9f9f9;
    cursor: not-allowed;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background-color: #28a745; /* Green color for action */
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #218838;
}