*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;
}

body{
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    background:linear-gradient(135deg,#0f172a,#1e3a8a,#2563eb,#38bdf8);
    overflow:hidden;
    padding:12px;
}

.background{
    position:fixed;
    inset:0;
    background:
    radial-gradient(circle at 20% 20%,rgba(255,255,255,.15),transparent 25%),
    radial-gradient(circle at 80% 30%,rgba(255,255,255,.12),transparent 25%),
    radial-gradient(circle at 50% 90%,rgba(255,255,255,.08),transparent 30%);
    animation:floatBg 12s infinite alternate ease-in-out;
}

@keyframes floatBg{
    from{
        transform:scale(1);
    }
    to{
        transform:scale(1.15);
    }
}

.container{
    position:relative;
    z-index:2;
    width:100%;
    display:flex;
    justify-content:center;
    align-items:center;
}

.card{
    width:min(370px, calc(100vw - 24px));
    padding:35px;
    text-align:center;
    background:rgba(255,255,255,.12);
    border:1px solid rgba(255,255,255,.25);
    backdrop-filter:blur(18px);
    border-radius:25px;
    box-shadow:0 20px 45px rgba(0,0,0,.35);
    margin:0 auto;
}

h1{
    color:white;
    font-size:30px;
    margin-bottom:8px;
}

.subtitle{
    color:#dbeafe;
    margin-bottom:25px;
}

.qr{
    width:220px;
    height:220px;
    object-fit:cover;
    background:white;
    border-radius:18px;
    padding:12px;
    margin-bottom:25px;
}

.download-qr{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    width:100%;
    margin-bottom:20px;
    padding:13px 16px;
    border-radius:14px;
    background:rgba(255,255,255,.15);
    color:white;
    font-size:16px;
    font-weight:600;
    text-decoration:none;
    transition:.3s;
}

.download-qr img{
    width:24px;
    height:24px;
    padding:3px;
    border-radius:6px;
    background:white;
}

.download-qr:hover{
    background:rgba(255,255,255,.25);
    transform:translateY(-2px);
}

.download-qr:focus-visible{
    outline:3px solid white;
    outline-offset:3px;
}

.buttons{
    display:flex;
    justify-content:center;
}

#payBtn{
    width:100%;
    text-decoration:none;
    text-align:center;

    background:#22c55e;
    color:white;

    padding:15px;

    border-radius:14px;

    font-size:18px;
    font-weight:bold;

    transition:.3s;
}

#payBtn:hover{
    background:#16a34a;
    transform:translateY(-2px);
}

@media(max-width:480px){
    body{
        padding:8px;
        overflow:hidden;
    }

    .card{
        width:100%;
        max-width:350px;
        padding:18px;
        border-radius:18px;
    }

    .qr{
        width:150px;
        height:150px;
        margin-bottom:16px;
    }

    .download-qr{
        padding:10px;
        margin-bottom:14px;
    }

    .btn{
        min-height:44px;
        font-size:16px;
        padding:12px 14px;
    }

    .payment-methods{
        flex-wrap:wrap;
        justify-content:center;
        gap:8px;
        margin-top:16px;
    }

    .payment-methods img{
        width:48px;
        padding:6px;
    }
}
.buttons{
    display:flex;
    flex-direction:column;
    gap:12px;
    margin-top:18px;
}

.btn{
    width:100%;
    min-height:52px;
    display:flex;
    justify-content:center;
    align-items:center;
    border-radius:14px;
    font-size:18px;
    font-weight:600;
    padding:14px 16px;
    cursor:pointer;
    border:none;
    text-decoration:none;
    line-height:1.2;
    transition:0.3s;
}

.btn:hover{
    transform:translateY(-2px);
}

#payBtn{
    background:#22c55e;
    color:white;
}

#payBtn:hover{
    background:#16a34a;
}

.secondary{
    background:white;
    color:#2563eb;
}

.secondary:hover{
    background:#f8fafc;
}
.profile{

    text-align:center;

    margin-bottom:25px;

}

.avatar{
    width:80px;
    height:80px;
    border-radius:50%;
    background:white;
    display:flex;
    align-items:center;
    justify-content:center;
    margin:auto;
    margin-bottom:15px;
    overflow:hidden;
    border:2px solid rgba(255,255,255,0.8);
}

.avatar img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
}

.profile h2{

    color:white;

    margin-bottom:6px;

}

.profile p{

    color:#dbeafe;

}

.payment-methods{

    display:flex;

    justify-content:space-between;

    align-items:center;

    margin-top:25px;

    gap:10px;

}

.payment-app{
    display:block;
    border-radius:10px;
    line-height:0;
}

.payment-methods img{

    width:60px;

    background:white;

    border-radius:10px;

    padding:8px;

    transition:.3s;

}

.payment-methods img:hover{

    transform:scale(1.1);

}

.payment-app:focus-visible{
    outline:3px solid white;
    outline-offset:3px;
}
/* Toast */

.toast{

    position:fixed;

    bottom:30px;

    left:50%;

    transform:translateX(-50%) translateY(120px);

    background:#111827;

    color:white;

    padding:14px 22px;

    border-radius:12px;

    font-size:15px;

    opacity:0;

    transition:.4s;

    z-index:9999;

    box-shadow:0 10px 30px rgba(0,0,0,.3);

}

.toast.show{

    opacity:1;

    transform:translateX(-50%) translateY(0);

}
.loader{

    position:fixed;

    inset:0;

    background:rgba(15,23,42,.92);

    display:flex;

    flex-direction:column;

    justify-content:center;

    align-items:center;

    visibility:hidden;

    opacity:0;

    transition:.3s;

    z-index:999;

}

.loader.show{

    visibility:visible;

    opacity:1;

}

.spinner{

    width:70px;

    height:70px;

    border:6px solid rgba(255,255,255,.2);

    border-top:6px solid white;

    border-radius:50%;

    animation:spin 1s linear infinite;

}

.loader p{

    color:white;

    margin-top:20px;

    font-size:18px;

}

@keyframes spin{

    to{

        transform:rotate(360deg);

    }

}