/* General Body and Container Styles */
body {
    font-family: Arial, sans-serif;
    background-color: #f4f7f6;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 450px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 25px;
}

.header img {
    max-width: 150px;
    margin-bottom: 10px;
}

.header h2 {
    color: #333;
    margin: 0;
}

/* Callback URL Info Box */
.callback-url {
    background-color: #e9f5ff;
    border: 1px solid #bce8f1;
    color: #31708f;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 25px;
    text-align: center;
}

.callback-url h4 {
    margin: 0 0 5px 0;
}

.callback-url p {
    margin: 0 0 10px 0;
    font-weight: bold;
    word-wrap: break-word;
}

.callback-url span {
    font-size: 14px;
}

/* Payment Form */
.payment-form {
    display: flex;
    flex-direction: column;
}

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

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

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box; /* Important for padding and width */
    font-size: 16px;
}

/* Pay Button */
.btn-pay {
    background-color: #d82969; /* Nagad's brand color */
    color: white;
    padding: 15px;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-pay:hover {
    background-color: #c21a58;
}