:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #1f2733;
  --muted: #6b7785;
  --line: #e6eaf0;
  --primary: #2f6bff;
  --primary-d: #1f53d6;
  --green: #1aa260;
  --orange: #e08600;
  --blue: #2f6bff;
  --red: #d83a3a;
  --shadow: 0 1px 3px rgba(20, 30, 60, .06), 0 6px 18px rgba(20, 30, 60, .05);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
}

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, #2f6bff, #6a4bff);
  color: #fff; font-weight: 700; font-size: 20px; display: grid; place-items: center;
}
.topbar h1 { font-size: 17px; margin: 0; }
.topbar .sub { margin: 0; color: var(--muted); font-size: 12px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.pill { padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill-gray { background: #eef1f6; color: var(--muted); }
.pill-green { background: #e4f7ee; color: var(--green); }
.pill-red { background: #fdeaea; color: var(--red); }

/* Buttons */
.btn {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600;
  transition: .15s;
}
.btn:hover { border-color: #cfd6e0; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-d); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.container { max-width: 1180px; margin: 0 auto; padding: 20px 24px 40px; }

/* Cards */
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }

/* Filters */
.filters { padding: 16px; margin-bottom: 16px; }
.seg { display: inline-flex; background: #eef1f6; border-radius: 10px; padding: 4px; margin-bottom: 14px; }
.seg-btn {
  border: 0; background: transparent; padding: 7px 18px; border-radius: 8px; cursor: pointer;
  font-size: 13px; font-weight: 600; color: var(--muted);
}
.seg-btn.active { background: #fff; color: var(--primary); box-shadow: var(--shadow); }

.filter-row { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--muted); }
.field.grow { flex: 1; min-width: 220px; }
.input {
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; font-size: 13px;
  color: var(--ink); background: #fff; min-width: 180px; outline: none;
}
.input:focus { border-color: var(--primary); }
.input-sm { min-width: 60px; padding: 5px 8px; }
.auto-refresh { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; padding-bottom: 8px; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 16px; }
.stat-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; box-shadow: var(--shadow); }
.stat-val { font-size: 26px; font-weight: 700; letter-spacing: .5px; }
.stat-label { color: var(--muted); font-size: 12px; margin-top: 4px; }
.accent-green { color: var(--green); }
.accent-orange { color: var(--orange); }
.accent-blue { color: var(--blue); }

/* Alert */
.alert { background: #fff4e5; border: 1px solid #ffd9a8; color: #9a5b00; padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; font-size: 13px; }
.alert.hidden { display: none; }

/* Table */
.table-wrap { padding: 16px; }
.table-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }
.table-head h2 { margin: 0; font-size: 15px; }
.meta { color: var(--muted); font-size: 12px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; color: var(--muted); font-weight: 600; padding: 10px 12px;
  border-bottom: 1px solid var(--line); background: #fafbfd; white-space: nowrap;
}
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody td { padding: 10px 12px; border-bottom: 1px solid #f1f3f7; white-space: nowrap; }
tbody tr:hover { background: #f8faff; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }
.sku { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 600; }

/* Pager */
.pager { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.page-info { font-size: 13px; color: var(--muted); }
.page-size { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; margin-left: auto; }

.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 18px; }

@media (max-width: 760px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .container { padding: 16px; }
}