@import url('https://fonts.googleapis.com/css?family=Open+Sans&display=swap');

:root {
--success-color: #2ecc71;
--error-color: #e74c3c;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  }

body {
background: linear-gradient(
to bottom,
rgba(0,0,0,.5),
rgba(0,0,0,.5)
),
url("./img1.jpg");

background-position: center;
background-size: cover;
background-repeat: no-repeat;

font-family: 'Open Sans', sans-serif;

display: flex;
align-items: center;
justify-content: center;

min-height: 100vh;
}

.container {
background-color: #fff;
border-radius: 10px;
box-shadow: 0 5px 20px rgba(0,0,0,0.3);
width: 450px;
overflow: hidden;
}

h2 {
text-align: center;
margin-bottom: 20px;
color: #222;
}

.form {
padding: 30px 40px;
}

.form-control {
margin-bottom: 15px;
padding-bottom: 20px;
position: relative;
}

.form-control label {
color: #555;
display: block;
margin-bottom: 5px;
font-weight: 600;
}

.form-control input {
border: 2px solid #f0f0f0;
border-radius: 4px;
display: block;
width: 100%;
padding: 12px;
font-size: 14px;
transition: 0.3s;
}

.form-control input:focus {
outline: none;
border-color: #3498db;
}

.form-control.success input {
border-color: var(--success-color);
}

.form-control.error input {
border-color: var(--error-color);
}

.form-control small {
color: var(--error-color);
position: absolute;
bottom: 0;
left: 0;
visibility: hidden;
font-size: 12px;
}

.form-control.error small {
visibility: visible;
}

.form button,
.payment-box button {
cursor: pointer;
background-color: #3498db;
border: none;
border-radius: 5px;
color: #fff;
display: block;
font-size: 16px;
padding: 12px;
margin-top: 20px;
width: 100%;
transition: 0.3s;
}

.form button:hover,
.payment-box button:hover {
background-color: #2980b9;
}

/* PAYMENT PAGE */

.payment-box {
padding: 30px;
text-align: center;
}

.payment-box h2 {
margin-bottom: 20px;
color: #222;
}

.qr-img {
width: 320px;
max-width: 100%;
display: block;
margin: 20px auto;
border-radius: 10px;
box-shadow: 0 3px 15px rgba(0,0,0,0.2);
}

.payment-box p {
margin-top: 15px;
color: #555;
font-size: 14px;
}

/* MOBILE */

@media (max-width: 500px) {

.container {
width: 95%;
}

.form {
padding: 25px;
}

.qr-img {
width: 100%;
}

}

.acknowledgement {
margin-top: 20px;
text-align: left;
padding: 12px;
background: #f8f9fa;
border: 1px solid #ddd;
border-radius: 8px;
}

.acknowledgement input {
margin-right: 8px;
transform: scale(1.2);
cursor: pointer;
}

.acknowledgement label {
font-size: 14px;
color: #333;
cursor: pointer;
}

.payment-box button:disabled {
background: #bdbdbd;
cursor: not-allowed;
}