:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel-2: #1f2937;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --accent: #f97316;
    --danger: #dc2626;
    --success: #16a34a;
    --border: rgba(255,255,255,.08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: #020617; color: var(--text); }
a { color: inherit; text-decoration: none; }
.login-body { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card, .card { background: var(--panel); border: 1px solid var(--border); border-radius: 18px; padding: 24px; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.login-card { width: min(420px, 100%); }
.layout { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar { background: var(--panel); border-right: 1px solid var(--border); padding: 24px; display: flex; flex-direction: column; justify-content: space-between; gap: 24px; }
.brand { font-size: 28px; font-weight: 700; line-height: 1.1; }
.brand span { color: var(--accent); }
.nav { display: grid; gap: 10px; margin-top: 32px; }
.nav a { padding: 12px 14px; background: rgba(255,255,255,.03); border-radius: 12px; }
.nav a:hover { background: rgba(255,255,255,.08); }
.content { padding: 28px; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 24px; }
.topbar h1 { margin: 0 0 6px; }
.muted, .mini { color: var(--muted); }
.mini { font-size: 12px; }
.cards { display: grid; gap: 18px; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 18px; }
.big-number { font-size: 42px; font-weight: 700; margin-top: 12px; }
.grid-2 { display: grid; grid-template-columns: 420px 1fr; gap: 18px; }
.product-layout { align-items: start; }
.sticky-card { position: sticky; top: 20px; }
.stack { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-size: 14px; }
input[type="text"], input[type="email"], input[type="password"], select, textarea, input[type="file"] { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); }
textarea { resize: vertical; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 16px; border: 0; border-radius: 12px; background: var(--accent); color: #fff; cursor: pointer; font-weight: 700; }
.btn:hover { filter: brightness(1.05); }
.btn-secondary { background: #374151; }
.btn-danger { background: var(--danger); }
.btn-full { width: 100%; }
.alert { padding: 14px 16px; border-radius: 12px; margin-bottom: 18px; }
.alert-success { background: rgba(22,163,74,.18); border: 1px solid rgba(22,163,74,.35); }
.alert-error { background: rgba(220,38,38,.18); border: 1px solid rgba(220,38,38,.35); }
.actions-row, .toolbar, .table-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.toolbar { justify-content: space-between; margin-bottom: 14px; }
.sortable-list { display: grid; gap: 10px; }
.sortable-item { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 14px; border: 1px solid var(--border); border-radius: 14px; background: rgba(255,255,255,.03); cursor: grab; }
.sortable-item.dragging { opacity: .45; }
.product-group + .product-group { margin-top: 18px; }
.item-main { display: flex; align-items: center; gap: 14px; }
.thumb { width: 58px; height: 58px; border-radius: 10px; overflow: hidden; background: rgba(255,255,255,.04); flex-shrink: 0; }
.thumb img, .image-preview img { width: 100%; height: 100%; object-fit: cover; }
.image-preview { width: 180px; height: 180px; border-radius: 14px; overflow: hidden; border: 1px solid var(--border); }
.sidebar-footer { display: grid; gap: 12px; }
ul { padding-left: 20px; }
@media (max-width: 1080px) {
  .layout, .grid-2, .cards { grid-template-columns: 1fr; }
  .sidebar { min-height: auto; }
  .sticky-card { position: static; }
  .topbar { flex-direction: column; align-items: flex-start; }
}