:root{--bg:#f4f6f8;--card:#fff;--ink:#1f2a33;--muted:#6b7a86;--teal:#2bb8b0;--teal-d:#1f9a93;--line:#e2e8ec}
*{box-sizing:border-box}body{margin:0;font:15px/1.4 -apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink)}
.top{display:flex;align-items:center;gap:24px;padding:10px 20px;background:#243640;color:#fff}.top .brand{color:#fff;text-decoration:none;font-weight:700;font-size:18px}.top .brand span{color:var(--teal)}
.top nav a{color:#cfe3e6;text-decoration:none;margin-right:16px}.top nav a.muted{color:#8aa0aa}
main{max-width:1200px;margin:20px auto;padding:0 16px}.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin-bottom:14px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:6px 0}.grow{flex:1}.inline{display:flex;gap:6px;align-items:center;white-space:nowrap}
input,select{font:inherit;padding:7px 9px;border:1px solid #c9d3da;border-radius:6px;background:#fff}#q{min-width:320px}
button{font:inherit;padding:8px 14px;border-radius:6px;border:1px solid var(--teal-d);background:var(--teal);color:#fff;cursor:pointer}button.ghost{background:#fff;color:var(--teal-d)}button[disabled]{opacity:.5;cursor:default}
.btn{display:inline-block;padding:8px 14px;border-radius:6px;background:var(--teal);color:#fff;text-decoration:none}
.muted{color:var(--muted)}.small{font-size:13px}.err{color:#b00020}
.login{max-width:380px;margin:60px auto;display:flex;flex-direction:column;gap:10px}.login label{display:flex;flex-direction:column;gap:4px}
table{width:100%;border-collapse:collapse}th,td{padding:7px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}th{font-weight:600;color:var(--muted);font-size:13px}
tr.sel{background:#eefaf9}td input[type=number]{width:60px}td input.serial{width:170px;text-transform:uppercase}.serialcol{display:none}table.serial .serialcol{display:table-cell}
.tablewrap{max-height:70vh;overflow:auto;padding:0}

.hidden{display:none}#scan{min-width:240px;border-color:var(--teal)}#assignlist div{padding:6px 8px;border-bottom:1px solid var(--line);cursor:pointer}#assignlist div:hover{background:#eefaf9}