:root {
    --navy-950: #0b1628;
    --navy-900: #11223b;
    --navy-800: #173252;
    --brand: #087da4;
    --brand-dark: #06627f;
    --brand-soft: #e9f7fb;
    --surface: #ffffff;
    --canvas: #f3f6f9;
    --line: #dce4eb;
    --text: #172033;
    --muted: #667085;
    --success: #087443;
    --warning: #9a5b06;
    --danger: #b42318;
    --info: #075985;
    --sidebar-width: 252px;
    --radius: 10px;
    --shadow: 0 8px 30px rgba(16, 34, 59, .08);
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body { min-width: 320px; min-height: 100vh; margin: 0; color: var(--text); background: var(--canvas); font: 14px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, input, select, textarea { font: inherit; }
a { color: var(--brand-dark); }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; top: 8px; left: 8px; transform: translateY(-160%); padding: 8px 12px; border-radius: 6px; color: #fff; background: #000; }
.skip-link:focus { transform: none; }

.admin-shell { display: grid; min-height: 100vh; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); }
.admin-sidebar { position: sticky; z-index: 80; top: 0; overflow-y: auto; height: 100vh; color: #d8e3ef; background: var(--navy-950); }
.admin-brand { display: flex; min-height: 72px; align-items: center; gap: 11px; padding: 14px 18px; color: #fff; text-decoration: none; }
.admin-brand .brand-mark { display: inline-grid; width: 39px; height: 39px; flex: 0 0 auto; place-items: center; border-radius: 10px; color: #fff; background: linear-gradient(145deg, #0891b2, #0e7490); font-size: .76rem; font-weight: 850; }
.admin-brand strong, .admin-brand small { display: block; }
.admin-brand small { color: #91a6bc; font-size: .73rem; font-weight: 550; }
.admin-nav { display: grid; gap: 3px; padding: 8px 10px 24px; }
.admin-nav a { display: flex; min-height: 42px; align-items: center; gap: 11px; padding: 9px 12px; border-radius: 7px; color: #b9c9d9; font-weight: 600; text-decoration: none; }
.admin-nav a:hover, .admin-nav a:focus-visible { color: #fff; background: var(--navy-800); }
.admin-nav a.active { color: #fff; background: #075d7b; }
.nav-icon { display: inline-grid; width: 27px; height: 27px; flex: 0 0 auto; place-items: center; border: 1px solid rgba(255,255,255,.12); border-radius: 6px; font-size: .61rem; font-weight: 800; letter-spacing: .02em; }
.admin-content { min-width: 0; }
.admin-topbar { position: sticky; z-index: 60; top: 0; display: flex; min-height: 72px; align-items: center; gap: 18px; padding: 12px clamp(18px, 3vw, 34px); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.97); backdrop-filter: blur(10px); }
.sidebar-toggle { display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 7px; color: var(--text); background: #fff; cursor: pointer; }
.topbar-spacer { flex: 1; }
.view-site-link { color: var(--muted); font-weight: 650; text-decoration: none; }
.user-summary { display: flex; align-items: center; gap: 9px; }
.user-summary strong, .user-summary small { display: block; max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-summary small { color: var(--muted); font-size: .72rem; }
.user-avatar { display: inline-grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; border-radius: 50%; color: var(--brand-dark); background: var(--brand-soft); font-weight: 800; }
.admin-main { min-height: calc(100vh - 72px); padding: 28px clamp(18px, 3vw, 36px) 0; }
.admin-footer { display: flex; justify-content: space-between; gap: 16px; margin-top: 36px; padding: 20px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
.environment-badge { color: var(--warning); }

.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.page-header h1 { margin: 0; font-size: clamp(1.55rem, 3vw, 2rem); line-height: 1.2; letter-spacing: -.02em; }
.page-header p { max-width: 700px; margin: 6px 0 0; color: var(--muted); }
.page-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 2px 8px rgba(16,34,59,.035); }
.card + .card { margin-top: 18px; }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.card-header h2, .card-header h3 { margin: 0; font-size: 1rem; }
.card-body { padding: 20px; }
.card-body > :first-child { margin-top: 0; }
.card-body > :last-child { margin-bottom: 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.metric-card { position: relative; padding: 20px; }
.metric-card .metric-label { margin: 0 0 10px; color: var(--muted); font-size: .78rem; font-weight: 750; letter-spacing: .04em; text-transform: uppercase; }
.metric-card .metric-value { margin: 0; font-size: clamp(1.7rem, 4vw, 2.25rem); font-weight: 800; line-height: 1; }
.metric-card .metric-note { margin: 9px 0 0; color: var(--muted); font-size: .82rem; }

.button { display: inline-flex; min-height: 40px; align-items: center; justify-content: center; gap: 7px; padding: 8px 14px; border: 1px solid transparent; border-radius: 7px; color: #fff; background: var(--brand); font-weight: 700; line-height: 1.2; text-align: center; text-decoration: none; cursor: pointer; }
.button:hover, .button:focus-visible { background: var(--brand-dark); }
.button-small { min-height: 34px; padding: 6px 10px; font-size: .82rem; }
.button-secondary { color: var(--text); border-color: var(--line); background: #fff; }
.button-secondary:hover { color: var(--brand-dark); background: var(--brand-soft); }
.button-danger { background: var(--danger); }
.button-danger:hover { background: #8f1c13; }
.button-success { background: var(--success); }
.button-ghost { color: var(--text); border-color: var(--line); background: transparent; }
.button:disabled { opacity: .55; cursor: not-allowed; }
.inline-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.inline-actions form { display: inline; }

.toolbar { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.filter-form { display: flex; flex: 1 1 600px; flex-wrap: wrap; align-items: end; gap: 10px; }
.field { display: grid; min-width: 0; gap: 6px; }
.field-grow { flex: 1 1 220px; }
.field label, fieldset > legend { color: #344054; font-size: .85rem; font-weight: 700; }
.required::after { content: " *"; color: var(--danger); }
.input, .select, .textarea, input[type="text"], input[type="email"], input[type="password"], input[type="number"], input[type="date"], input[type="url"], input[type="tel"], select, textarea { width: 100%; min-height: 42px; padding: 9px 11px; border: 1px solid #c9d3dd; border-radius: 7px; color: var(--text); background: #fff; }
textarea, .textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--brand); outline: 3px solid rgba(8,125,164,.13); }
input[readonly], input:disabled, select:disabled { color: #667085; background: #f2f4f7; }
.field-help { margin: 0; color: var(--muted); font-size: .78rem; }
.field-error { margin: 0; color: var(--danger); font-size: .8rem; font-weight: 650; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.form-span-2 { grid-column: 1 / -1; }
.form-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.check-field { display: flex; align-items: center; gap: 8px; min-height: 42px; }
.check-field input { width: 17px; height: 17px; }
.error-summary { margin-bottom: 18px; padding: 14px 16px; border: 1px solid #fecaca; border-radius: 8px; color: var(--danger); background: #fef2f2; }
.error-summary strong { display: block; margin-bottom: 4px; }
.error-summary ul { margin: 0; padding-left: 20px; }

.table-wrap { width: 100%; overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 12px 14px; border-bottom: 1px solid #e9edf2; text-align: left; vertical-align: middle; }
.data-table th { color: #475467; background: #f8fafc; font-size: .75rem; font-weight: 800; letter-spacing: .035em; text-transform: uppercase; white-space: nowrap; }
.data-table tbody tr:hover { background: #fbfdff; }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table td.numeric, .data-table th.numeric { text-align: right; font-variant-numeric: tabular-nums; }
.data-table a { font-weight: 700; text-decoration: none; }
.cell-primary { display: block; font-weight: 700; }
.cell-secondary { display: block; color: var(--muted); font-size: .78rem; }
.badge { display: inline-flex; min-height: 24px; align-items: center; padding: 3px 9px; border-radius: 999px; color: #344054; background: #eef2f6; font-size: .72rem; font-weight: 800; text-transform: capitalize; white-space: nowrap; }
.badge-success, .badge-posted, .badge-active, .badge-received { color: var(--success); background: #dcfae6; }
.badge-warning, .badge-in-transit, .badge-partially-received, .badge-draft, .badge-pending { color: var(--warning); background: #fef0c7; }
.badge-danger, .badge-void, .badge-voided, .badge-inactive, .badge-low { color: var(--danger); background: #fee4e2; }
.badge-info, .badge-shipped { color: var(--info); background: #e0f2fe; }
.empty-state { padding: 48px 20px; text-align: center; }
.empty-state .empty-icon { display: grid; width: 52px; height: 52px; margin: 0 auto 12px; place-items: center; border-radius: 50%; color: var(--brand); background: var(--brand-soft); font-weight: 800; }
.empty-state h2, .empty-state h3 { margin: 0 0 6px; font-size: 1.05rem; }
.empty-state p { max-width: 480px; margin: 0 auto 16px; color: var(--muted); }
.pagination { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 5px; padding: 16px; border-top: 1px solid var(--line); }
.pagination a, .pagination span { display: inline-grid; min-width: 34px; min-height: 34px; place-items: center; padding: 5px 9px; border: 1px solid var(--line); border-radius: 6px; color: var(--text); background: #fff; text-decoration: none; }
.pagination .active, .pagination [aria-current="page"] { color: #fff; border-color: var(--brand); background: var(--brand); }

.flash-stack { display: grid; gap: 10px; margin-bottom: 18px; }
.alert { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 12px 15px; border: 1px solid #bae6fd; border-radius: 8px; color: var(--info); background: #f0f9ff; }
.alert-success { color: var(--success); border-color: #bbf7d0; background: #f0fdf4; }
.alert-error, .alert-danger { color: var(--danger); border-color: #fecaca; background: #fef2f2; }
.alert-warning { color: var(--warning); border-color: #fde68a; background: #fffbeb; }
.alert-close { padding: 0 3px; border: 0; color: inherit; background: transparent; font-size: 1.25rem; line-height: 1; cursor: pointer; }
.definition-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 0; background: var(--line); }
.definition-grid > div { padding: 16px; background: #fff; }
.definition-grid dt { margin-bottom: 4px; color: var(--muted); font-size: .76rem; font-weight: 750; text-transform: uppercase; }
.definition-grid dd { margin: 0; font-weight: 650; }
.item-rows { display: grid; gap: 10px; }
.item-row { display: grid; grid-template-columns: minmax(210px, 2fr) repeat(4, minmax(100px, .7fr)) auto; align-items: end; gap: 10px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: #fbfcfe; }
.item-row.compact { grid-template-columns: minmax(210px, 2fr) minmax(100px, .7fr) auto; }
.scan-panel { padding: 16px; border: 1px solid #bae6fd; border-radius: 8px; background: #f0f9ff; }
.scan-panel .input { font-size: 1.08rem; }
.stock-low { color: var(--danger); font-weight: 800; }
.note { padding: 12px 14px; border-left: 4px solid var(--brand); color: #344054; background: var(--brand-soft); }

.auth-body { background: radial-gradient(circle at 15% 10%, rgba(8,125,164,.14), transparent 28%), #eef3f7; }
.auth-main { display: grid; min-height: 100vh; place-items: center; padding: 30px 16px; }
.auth-card { width: min(440px, 100%); padding: 30px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }
.auth-logo { display: grid; width: 48px; height: 48px; margin-bottom: 22px; place-items: center; border-radius: 12px; color: #fff; background: var(--brand); font-weight: 850; }
.auth-card h1 { margin: 0 0 7px; font-size: 1.75rem; }
.auth-card > p { margin: 0 0 22px; color: var(--muted); }
.auth-card .field + .field { margin-top: 15px; }
.auth-card .button { width: 100%; margin-top: 20px; }
.auth-footnote { margin-top: 18px !important; text-align: center; font-size: .8rem; }

@media (max-width: 1100px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .definition-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 880px) {
    .admin-shell { grid-template-columns: 1fr; }
    .admin-sidebar { position: fixed; left: 0; transform: translateX(-105%); width: min(var(--sidebar-width), 88vw); box-shadow: var(--shadow); transition: transform .2s ease; }
    .admin-sidebar.open { transform: none; }
    .sidebar-toggle { display: inline-grid; place-items: center; }
    .admin-topbar { gap: 10px; }
    .view-site-link { display: none; }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .item-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .item-row > :first-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
    .admin-main { padding-inline: 13px; }
    .admin-topbar { padding-inline: 13px; }
    .user-summary > span:last-child { display: none; }
    .page-header { display: grid; }
    .page-actions { justify-content: flex-start; }
    .grid-2, .grid-3, .grid-4, .form-grid, .definition-grid { grid-template-columns: 1fr; }
    .form-span-2 { grid-column: auto; }
    .item-row, .item-row.compact { grid-template-columns: 1fr; }
    .item-row > :first-child { grid-column: auto; }
    .admin-footer { display: grid; }
    .data-table th, .data-table td { padding: 10px; }
}
@media print {
    .admin-sidebar, .admin-topbar, .page-actions, .toolbar, .admin-footer, .button, .flash-stack { display: none !important; }
    .admin-shell { display: block; }
    .admin-main { padding: 0; }
    .card { border-color: #aaa; box-shadow: none; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}