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

body{
min-height:100vh;
padding:20px;
background:
radial-gradient(circle at top left,#ff6b6b44,transparent 30%),
radial-gradient(circle at bottom right,#f59e0b44,transparent 30%),
#0f172a;
color:white;
}

.container{
max-width:1200px;
margin:auto;
display:grid;
grid-template-columns:1fr 420px;
gap:25px;
}

.card{
background:rgba(255,255,255,.08);
backdrop-filter:blur(20px);
border:1px solid rgba(255,255,255,.1);
border-radius:25px;
padding:25px;
}

h1{
font-size:2rem;
margin-bottom:8px;
}

.subtitle{
color:#94a3b8;
margin-bottom:25px;
}

.input-group{
margin-bottom:18px;
}

label{
display:block;
margin-bottom:8px;
color:#cbd5e1;
font-size:14px;
}

input{
width:100%;
padding:14px;
border:none;
outline:none;
border-radius:14px;
background:rgba(255,255,255,.08);
color:white;
}

.items{
margin-top:20px;
}

.item-row{
display:grid;
grid-template-columns:2fr 80px 100px 50px;
gap:10px;
margin-bottom:10px;
}

button{
border:none;
cursor:pointer;
border-radius:14px;
font-weight:600;
transition:.3s;
}

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

.add-btn{
width:100%;
padding:15px;
background:linear-gradient(135deg,#8b5cf6,#06b6d4);
color:white;
margin-top:10px;
}

.remove-btn{
background:#ef4444;
color:white;
}

.actions{
display:grid;
grid-template-columns:1fr 1fr;
gap:12px;
margin-top:20px;
}

.print-btn{
padding:15px;
background:linear-gradient(135deg,#22c55e,#16a34a);
color:white;
}

.clear-btn{
padding:15px;
background:linear-gradient(135deg,#64748b,#475569);
color:white;
}

.receipt{
background:white;
color:black;
padding:25px;
border-radius:20px;
font-family:monospace;
}

.receipt h2{
text-align:center;
margin-bottom:10px;
}

.receipt-info{
font-size:13px;
margin-bottom:15px;
}

.receipt table{
width:100%;
border-collapse:collapse;
margin-bottom:15px;
}

.receipt th,
.receipt td{
padding:6px 0;
text-align:left;
font-size:14px;
}

.receipt .right{
text-align:right;
}

.total-section{
border-top:2px dashed #999;
padding-top:10px;
}

.total-line{
display:flex;
justify-content:space-between;
margin-bottom:5px;
}

.grand-total{
font-size:20px;
font-weight:bold;
}

@media(max-width:900px){

.container{
grid-template-columns:1fr;
}

.item-row{
grid-template-columns:1fr;
}

.actions{
grid-template-columns:1fr;
}
}

@media print{
body *{
visibility:hidden;
}

#receiptPreview,
#receiptPreview *{
visibility:visible;
}

#receiptPreview{
position:absolute;
left:0;
top:0;
width:100%;
}
}