:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --border: #dde3ea;
  --text: #1c2430;
  --muted: #64707d;
  --primary: #1f5fbf;
  --primary-hover: #184d9c;
  --danger: #c0392b;
  --warn-bg: #fff4e0;
  --warn-text: #8a5300;
  --ok-bg: #e7f6ec;
  --ok-text: #1e6b3a;
  --radius: 8px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: #14233a;
  color: #fff;
}
.topbar .inner {
  max-width: 1150px; margin: 0 auto; padding: 0 16px;
  display: flex; align-items: center; gap: 24px; height: 56px;
}
.brand { font-weight: 700; letter-spacing: .04em; color: #fff; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a { color: #c9d4e3; padding: 6px 10px; border-radius: 6px; }
.nav a:hover, .nav a.active { background: rgba(255,255,255,.1); color: #fff; text-decoration: none; }
.topbar form { margin: 0; }
.topbar .user { color: #c9d4e3; font-size: 14px; }

main { max-width: 1150px; margin: 0 auto; padding: 24px 16px 48px; }

h1 { font-size: 22px; margin: 0; }
h2 { font-size: 17px; margin: 0 0 12px; }

.page-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.card + .card { margin-top: 20px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } .nav { display: none; } }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; }

.thumb { width: 44px; height: 44px; object-fit: cover; border-radius: 6px; background: #eef1f5; display: block; }
.thumb.empty { display: grid; place-items: center; color: var(--muted); font-size: 11px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.low { background: var(--warn-bg); color: var(--warn-text); }
.badge.ok { background: var(--ok-bg); color: var(--ok-text); }
.badge.in { background: var(--ok-bg); color: var(--ok-text); }
.badge.out { background: #fdecea; color: var(--danger); }
.badge.adjust { background: #eaf0fb; color: var(--primary); }

.btn {
  display: inline-block; border: 1px solid var(--primary); background: var(--primary); color: #fff;
  padding: 8px 14px; border-radius: 6px; font: inherit; font-size: 14px; cursor: pointer;
}
.btn:hover { background: var(--primary-hover); text-decoration: none; }
.btn.secondary { background: #fff; color: var(--primary); }
.btn.secondary:hover { background: #eef3fb; }
.btn.danger { background: #fff; color: var(--danger); border-color: var(--danger); }
.btn.danger:hover { background: #fdecea; }
.btn.link { background: none; border: 0; color: #c9d4e3; padding: 0; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.actions form { margin: 0; }

label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 4px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=search], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font: inherit; background: #fff;
}
textarea { min-height: 90px; }
.field { margin-bottom: 16px; }
.field .hint { color: var(--muted); font-size: 13px; margin-top: 4px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.error { color: var(--danger); font-size: 13px; margin-top: 4px; }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.filters input[type=search] { max-width: 260px; }
.filters select { max-width: 200px; }
.filters label.inline { display: flex; align-items: center; gap: 6px; font-weight: 400; margin: 0; }

.flash { background: var(--ok-bg); color: var(--ok-text); border-radius: var(--radius); padding: 10px 14px; margin-bottom: 16px; }

.product-head { display: grid; grid-template-columns: 220px 1fr; gap: 20px; }
@media (max-width: 640px) { .product-head { grid-template-columns: 1fr; } }
.product-img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius); background: #eef1f5; }
.product-img.empty { display: grid; place-items: center; color: var(--muted); }
dl.meta { display: grid; grid-template-columns: 140px 1fr; gap: 6px 12px; margin: 12px 0 0; }
dl.meta dt { color: var(--muted); }
dl.meta dd { margin: 0; }

.muted { color: var(--muted); }
.small { font-size: 13px; }

.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 380px; }
.login-card h1 { margin-bottom: 4px; }

nav[role=navigation] ul, .pagination { list-style: none; display: flex; gap: 8px; padding: 0; margin: 16px 0 0; }
.pagination li span, .pagination li a { display: inline-block; padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; background: #fff; }
.pagination li.disabled span { color: var(--muted); }