body{font-family: Inter, system-ui, sans-serif;}
.sidebar{width:260px; min-height:100vh; position:sticky; top:0;}
.sidebar .nav-link{padding:10px 12px; opacity:.85}
.sidebar .nav-link:hover,.sidebar .nav-link.active{opacity:1; background:#0d6efd;}
.main{overflow:auto;}
.product-card{cursor:pointer; transition:.15s; border:1px solid #eee;}
.product-card:hover{transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,.08); border-color:#0d6efd;}
.cart-item{border-bottom:1px dashed #e9ecef;}
.receipt{font-family: ui-monospace, monospace; font-size:13px;}
.stat-card{border:0; border-radius:16px;}