body { font-family: sans-serif; max-width: 600px; margin: auto; padding: 20px; }
#qrcode { margin: 20px auto; text-align: center; }
input { width: 100%; padding: 10px; margin-bottom: 10px; box-sizing: border-box; }
#error { color: red; }
.search-container { position: relative; }
.suggestions { 
    display: none; 
    position: absolute; 
    top: 100%; 
    left: 0; 
    width: 100%; 
    max-height: 200px; 
    overflow-y: auto; 
    background: white; 
    border: 1px solid #ccc; 
    border-top: none; 
    list-style: none; 
    margin: 0; 
    padding: 0; 
    z-index: 1; 
}
.suggestions li { padding: 10px; cursor: pointer; }
.suggestions li:hover { background: #f0f0f0; }