body{font-family:system-ui,Arial,sans-serif;margin:0;padding:0;}
header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#f5f5f5;border-bottom:1px solid #ddd;}
nav button{margin-right:8px;}
main{padding:16px;}
.view.hidden{display:none;}
.row{display:flex;gap:16px;flex-wrap:wrap;margin:8px 0;}
.card{border:1px solid #ddd;border-radius:10px;padding:12px;min-width:280px;background:#fff;}
.flex1{flex:1;}
label{display:block;margin:6px 0 2px;}
input, select, button{margin:4px 0 8px;}
table{width:100%;border-collapse:collapse;margin-top:10px;}
th, td{border:1px solid #eee;padding:6px 8px;text-align:left;}
th{background:#fafafa;}
#assign-result{margin-top:8px;color:#444;}