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

body{
background:radial-gradient(circle at top,#0a0f3d,#000 70%);
font-family:Arial,sans-serif;
color:white;
text-align:center;
min-height:100vh;
padding-bottom:100px;
}

h1{
margin:20px;
font-size:26px;
letter-spacing:3px;
text-shadow:0 0 10px #00c8ff;
}

.card{
background:rgba(255,255,255,0.05);
backdrop-filter:blur(12px);
padding:25px;
margin:20px auto;
border-radius:20px;
width:90%;
max-width:380px;
border:1px solid rgba(255,255,255,0.08);
box-shadow:0 0 20px rgba(0,200,255,0.2);
}

.big{
font-size:22px;
font-weight:bold;
color:#00ffe7;
margin:10px 0;
text-shadow:0 0 10px #00ffe7;
}

.btn{
background:linear-gradient(90deg,#00c8ff,#00ffa6);
color:black;
border:none;
padding:12px;
margin:8px;
border-radius:15px;
cursor:pointer;
width:200px;
font-weight:bold;
}

.loading{
opacity:0.6;
pointer-events:none;
}

.spinner{
width:18px;
height:18px;
border:3px solid rgba(0,0,0,0.2);
border-top:3px solid black;
border-radius:50%;
display:inline-block;
animation:spin 0.6s linear infinite;
}

@keyframes spin{
100%{transform:rotate(360deg);}
}

input{
padding:10px;
border-radius:10px;
border:none;
width:180px;
text-align:center;
}

.qris img{
width:220px;
margin-top:15px;
border-radius:15px;
}

.status{margin-top:10px;font-weight:bold;}
.success{color:#00ff88;}
.wait{color:#ffc107;}
.expired{color:#ff4d4d;}