:root{--bg:#f6f7f9;--card:#fff;--text:#1d2330;--muted:#6b7280;--line:#e5e7eb;--accent:#e4002b;--accent-d:#b80023;--ok:#15803d;--warn:#b45309;--err:#b91c1c;--blue:#1d4ed8}
*{box-sizing:border-box}
body{margin:0;font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
header{background:#1d2330;color:#fff;padding:0 16px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;min-height:52px}
header .brand{font-weight:700;color:#fff;margin-right:8px}
header nav{display:flex;gap:4px;flex-wrap:wrap;flex:1}
header nav a{color:#cbd5e1;padding:6px 10px;border-radius:6px}
header nav a.on,header nav a:hover{background:#2e3748;color:#fff;text-decoration:none}
header .user{color:#94a3b8;font-size:13px;display:flex;gap:10px;align-items:center}
header .user button{background:none;border:0;color:#cbd5e1;cursor:pointer;padding:0;font:inherit}
main{max-width:1200px;margin:0 auto;padding:20px 16px 60px}
h1{font-size:22px;margin:0 0 16px}h2{font-size:17px;margin:24px 0 10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:16px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px}
.stat b{display:block;font-size:24px;margin-top:4px}.stat span{color:var(--muted);font-size:13px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:var(--card)}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);background:#fafafa}
td.num,th.num{text-align:right;white-space:nowrap}
.muted{color:var(--muted)}.small{font-size:13px}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;background:#eef2f7;color:#334155}
.b-new{background:#fee2e2;color:var(--err)}.b-accepted{background:#dbeafe;color:var(--blue)}
.b-assembled{background:#fef3c7;color:var(--warn)}.b-shipped{background:#dcfce7;color:var(--ok)}.b-cancelled{background:#e5e7eb;color:#6b7280}
.low{color:var(--err);font-weight:600}
.btn{display:inline-block;padding:8px 14px;border-radius:7px;border:1px solid var(--line);background:#fff;color:var(--text);cursor:pointer;font:inherit}
.btn:hover{text-decoration:none;background:#f3f4f6}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-d)}
.btn-ok{background:var(--ok);border-color:var(--ok);color:#fff}.btn-ok:hover{filter:brightness(.92);background:var(--ok)}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.actions form{margin:0}
input,select,textarea{font:inherit;padding:8px 10px;border:1px solid #cfd4dc;border-radius:7px;background:#fff;max-width:100%}
form p{margin:0 0 12px}form p label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.messages{list-style:none;padding:0;margin:0 0 16px}
.messages li{padding:10px 14px;border-radius:8px;margin-bottom:6px;background:#eef2f7}
.messages .success{background:#dcfce7}.messages .error{background:#fee2e2}.messages .warning{background:#fef3c7}
.pager{margin-top:12px;display:flex;gap:10px;align-items:center}
.login{max-width:360px;margin:10vh auto}
dl.kv{display:grid;grid-template-columns:160px 1fr;gap:6px 12px;margin:0}dl.kv dt{color:var(--muted)}dl.kv dd{margin:0}
@media(max-width:640px){dl.kv{grid-template-columns:1fr}dl.kv dt{margin-top:6px}header{padding:8px 12px}}
.b-returned{background:#ede9fe;color:#6d28d9}
.r-expected{background:#fef3c7;color:var(--warn)}.r-received{background:#dcfce7;color:var(--ok)}.r-rejected{background:#e5e7eb;color:#6b7280}
form ul{list-style:none;padding:0;margin:4px 0}form ul label{display:flex;gap:6px;align-items:center;color:var(--text);font-size:14px}
.shop-pick select{background:#2e3748;color:#fff;border-color:#475569;padding:5px 8px}
.shop-one{color:#fff;background:#2e3748;padding:5px 10px;border-radius:7px;font-size:13px}
.search-box{position:relative}
.dropdown{position:absolute;z-index:10;left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,.12);max-height:320px;overflow:auto;margin-top:4px}
.dd-item{padding:9px 12px;cursor:pointer;border-bottom:1px solid var(--line)}.dd-item:hover{background:#f3f4f6}
.small-btn{padding:4px 9px;font-size:13px}
.pay-row{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}.pay-row label{margin:0!important}
.st-debt,.st-unpaid{background:#fee2e2;color:var(--err)}.st-paid{background:#dcfce7;color:var(--ok)}
.st-returned{background:#e5e7eb;color:#6b7280}.st-overpaid{background:#fef3c7;color:var(--warn)}
@media print{header,.actions,.no-print,.messages{display:none!important}body{background:#fff}.card,table{border:0}}
.serial-box{display:flex;flex-direction:column;gap:6px;min-width:220px}
.serial-box .chips{display:flex;flex-wrap:wrap;gap:4px}
.chip{display:inline-flex;align-items:center;gap:4px;background:#eef2ff;color:#3730a3;border-radius:6px;padding:2px 4px 2px 8px;font:12px/1.6 ui-monospace,Consolas,monospace}
.chip button{border:0;background:none;color:#6366f1;cursor:pointer;font-size:14px;line-height:1;padding:0 4px}
.serial-box .scan{width:100%;font-family:ui-monospace,Consolas,monospace}
.doc-posted{background:#dcfce7;color:var(--ok)}.doc-draft{background:#fef3c7;color:var(--warn)}
.sn-in_stock{background:#dcfce7;color:var(--ok)}.sn-sold{background:#dbeafe;color:var(--blue)}.sn-defect{background:#fee2e2;color:var(--err)}
.sn-to_supplier,.sn-written_off{background:#e5e7eb;color:#6b7280}
td input[type=checkbox]{transform:scale(1.2)}