:root{
    --bg:#f6f7fb;
    --card:#fff;
    --text:#1f2937;
    --muted:#6b7280;
    --border:#e5e7eb;
    --primary:#2563eb;
    --primary-dark:#1d4ed8;
    --danger:#dc2626;
    --warning:#d97706;
    --ok:#16a34a;
    --soft-danger:#fee2e2;
    --soft-warning:#fef3c7;
    --soft-ok:#dcfce7;
    --soft-blue:#dbeafe;
    --shadow:0 10px 30px rgba(15,23,42,.08);
    --radius:16px;
}
*{box-sizing:border-box}
body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
.topbar{
    background:linear-gradient(135deg,#1d4ed8,#2563eb);
    color:#fff;
    padding:20px 24px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:16px;
    box-shadow:var(--shadow);
}
.topbar h1{margin:0 0 4px;font-size:24px}
.topbar p{margin:0;color:#dbeafe;font-size:14px}
.nav{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    padding:14px 20px;
    max-width:1380px;
    margin:0 auto;
}
.nav a{
    text-decoration:none;
    background:#fff;
    color:#374151;
    border:1px solid var(--border);
    padding:10px 13px;
    border-radius:999px;
    font-weight:750;
}
.nav a:hover{background:#eff6ff;color:#1d4ed8}
.container{
    max-width:1380px;
    margin:0 auto;
    padding:0 20px 30px;
}
.grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:16px;
    margin-bottom:16px;
}
.grid.two{
    grid-template-columns:2fr 1fr;
}
.card{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:16px;
    box-shadow:var(--shadow);
}
.card h2{
    margin:0 0 12px;
    font-size:18px;
}
.stat{
    min-height:110px;
    display:flex;
    flex-direction:column;
    gap:5px;
}
.stat span{color:var(--muted);font-weight:750;font-size:13px}
.stat strong{font-size:30px}
.stat small{color:var(--muted)}
.danger-card{background:#fff7f7;border-color:#fecaca}
.table-wrap{
    overflow:auto;
    border:1px solid var(--border);
    border-radius:12px;
}
table{
    width:100%;
    border-collapse:collapse;
    font-size:13px;
}
th,td{
    padding:10px 8px;
    border-bottom:1px solid var(--border);
    text-align:left;
    vertical-align:top;
}
th{
    background:#f9fafb;
    color:#374151;
    text-transform:uppercase;
    letter-spacing:.04em;
    font-size:12px;
}
.right{text-align:right}
.empty{
    color:var(--muted);
    text-align:center;
    padding:18px;
}
.pill{
    display:inline-block;
    padding:5px 8px;
    border-radius:999px;
    font-size:12px;
    font-weight:800;
    white-space:nowrap;
}
.pill.ok{background:var(--soft-ok);color:#166534}
.pill.warn{background:var(--soft-warning);color:#92400e}
.pill.danger{background:var(--soft-danger);color:#991b1b}
.pill.gray{background:#f3f4f6;color:#374151}
.txt-danger{color:var(--danger)}
.txt-ok{color:var(--ok)}
.muted{color:var(--muted)}
.warning-box{
    border:1px solid #fecaca;
    background:var(--soft-danger);
    color:#7f1d1d;
    padding:10px 12px;
    border-radius:12px;
    margin-bottom:10px;
    line-height:1.45;
}
.warning-box.orange{
    border-color:#fed7aa;
    background:#fff7ed;
    color:#9a3412;
}
.warning-box.blue{
    border-color:#bfdbfe;
    background:#eff6ff;
    color:#1e3a8a;
}
.info-box{
    border:1px solid #bfdbfe;
    background:#eff6ff;
    color:#1e3a8a;
    padding:12px;
    border-radius:12px;
    margin-top:14px;
}
.alert{
    border-radius:12px;
    padding:12px 14px;
    margin-bottom:14px;
    border:1px solid var(--border);
}
.alert.success{background:var(--soft-ok);color:#166534;border-color:#bbf7d0}
.alert.danger{background:var(--soft-danger);color:#991b1b;border-color:#fecaca}
.alert.warning{background:var(--soft-warning);color:#92400e;border-color:#fde68a}
.form{
    display:flex;
    flex-direction:column;
    gap:10px;
}
.grid-form{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:12px;
}
.grid-form .wide{grid-column:1 / -1}
label{
    font-size:13px;
    font-weight:800;
    color:#374151;
    display:block;
    margin-bottom:5px;
}
label.check{
    display:flex;
    align-items:center;
    gap:8px;
    margin-top:4px;
}
label.check input{
    width:auto;
}
input,select,textarea{
    width:100%;
    border:1px solid var(--border);
    border-radius:10px;
    padding:10px 11px;
    font:inherit;
    background:#fff;
    color:var(--text);
}
textarea{min-height:80px;resize:vertical}
input:focus,select:focus,textarea:focus{
    outline:none;
    border-color:#93c5fd;
    box-shadow:0 0 0 3px rgba(37,99,235,.12);
}
.actions{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    align-items:center;
    margin-top:8px;
}
.btn{
    display:inline-block;
    border:0;
    border-radius:10px;
    padding:10px 13px;
    font-weight:800;
    cursor:pointer;
    background:var(--primary);
    color:#fff;
    text-decoration:none;
    font:inherit;
}
.btn:hover{background:var(--primary-dark)}
.btn.ghost{
    background:#fff;
    color:#374151;
    border:1px solid var(--border);
}
.btn.ghost:hover{background:#f9fafb}
.btn.danger{background:var(--danger);color:#fff}
.btn.danger:hover{background:#b91c1c}
.btn.small{
    padding:7px 9px;
    font-size:12px;
}
.filter{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    align-items:center;
    margin-bottom:12px;
}
.filter input{max-width:280px}
.filter select{max-width:260px}
small{color:var(--muted)}
.inline-form{
    display:inline-block;
    margin:2px;
}
.passive-row{
    opacity:.65;
    background:#fafafa;
}
.expired-row{
    background:#fff1f2;
}
.soon-row{
    background:#fffbeb;
}

@media(max-width:1000px){
    .grid,.grid.two,.grid-form{
        grid-template-columns:1fr;
    }
    .topbar{
        align-items:flex-start;
        flex-direction:column;
    }
    .container{padding:0 14px 24px}
    .nav{padding:12px 14px}
}

.center{text-align:center}
.highlight-cell{background:#fef9c3;font-weight:800}
.production-head{
    display:grid;
    grid-template-columns:1fr 1fr auto;
    gap:8px;
    border:1px solid var(--border);
    border-radius:12px;
    padding:10px;
    margin-bottom:10px;
    background:#fff;
}
.production-table th,
.production-table td{
    border:1px solid #111827;
}
.production-table th{
    background:#d1d5db;
    color:#111827;
    text-align:center;
}
@media print{
    body{background:#fff}
    .topbar,.nav,.no-print,.alert{display:none!important}
    .container{max-width:none;padding:0}
    .card{box-shadow:none;border:0;padding:0}
    .print-area{display:block}
    a[href]:after{content:""}
}
.date-title{
    margin:22px 2px 12px;
    font-size:20px;
    color:#111827;
}
.production-sheet-card{
    margin-bottom:18px;
}
.fifo-note{
    margin-top:10px;
}
.mini-input{
    width:120px;
    padding:7px 8px;
    border-radius:8px;
    margin:2px;
}
.writeoff-form{
    display:flex;
    gap:6px;
    align-items:center;
    flex-wrap:wrap;
}
.card a{color:#1d4ed8;font-weight:800}
@media print{
    .production-sheet-card{
        page-break-inside:avoid;
        margin-bottom:18px;
    }
    .date-title{
        page-break-after:avoid;
    }
}
.top-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.user-badge{display:inline-flex;align-items:center;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:8px 12px;background:rgba(255,255,255,.12);font-weight:800;color:#fff}
.auth-container{display:flex;justify-content:center;align-items:flex-start;padding-top:34px}
.auth-card{width:100%;max-width:460px}
.auth-page .auth-topbar{justify-content:center;text-align:center}