:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff4ff;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --info: #0891b2;
  --info-light: #ecfeff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  font-size: 13.5px;
  line-height: 1.55;
}
.hidden { display: none !important; }

/* === Layout === */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 208px; background: var(--gray-900); color: var(--gray-400); flex-shrink: 0;
  display: flex; flex-direction: column; position: fixed; height: 100vh; overflow-y: auto; z-index: 100;
}
.sidebar-header { padding: 22px 20px 16px; }
.sidebar-header h1 { font-size: 15px; color: #fff; font-weight: 650; letter-spacing: .01em; }
.sidebar-header p { font-size: 11px; color: var(--gray-500); margin-top: 2px; }
.nav { flex: 1; padding: 4px 10px 8px; }
.nav-sec {
  font-size: 10.5px; color: var(--gray-500); letter-spacing: .08em; text-transform: uppercase;
  padding: 14px 10px 5px; user-select: none;
}
.nav-item {
  display: flex; align-items: center; gap: 9px; padding: 8px 10px; cursor: pointer;
  color: #b6c2d4; font-size: 13px; transition: background .12s, color .12s; border-radius: 8px; margin-bottom: 1px;
}
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-item .icon { font-size: 14px; width: 18px; text-align: center; flex-shrink: 0; }
.nav-badge {
  margin-left: auto; background: var(--danger); color: #fff; font-size: 10px;
  padding: 1px 6px; border-radius: 9px; font-weight: 600;
}
.conn-status { padding: 10px 20px; font-size: 11px; line-height: 1.9; color: var(--gray-500); }
.sidebar-footer {
  padding: 12px 20px; border-top: 1px solid rgba(255,255,255,.08); font-size: 12px; color: #b6c2d4;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.sidebar-footer .btn { padding: 3px 10px; font-size: 11.5px; background: transparent; border: 1px solid var(--gray-600); color: #b6c2d4; }
.sidebar-footer .btn:hover { border-color: var(--gray-400); color: #fff; }

.main { flex: 1; margin-left: 208px; padding: 30px 36px 48px; min-width: 0; max-width: 1240px; }
.page-header { margin-bottom: 22px; }
.page-header h2 { font-size: 19px; font-weight: 700; color: var(--gray-900); }
.page-header p { font-size: 12.5px; color: var(--gray-500); margin-top: 3px; }

/* === Cards === */
.card {
  background: #fff; border-radius: var(--radius); border: 1px solid var(--gray-200);
  overflow: hidden; margin-bottom: 16px;
}
.card-header {
  padding: 13px 20px; border-bottom: 1px solid var(--gray-100); font-weight: 600; font-size: 13.5px;
  color: var(--gray-800); display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
}
.card-body { padding: 18px 20px; }
.table-wrap { padding: 0; overflow-x: auto; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; margin-bottom: 16px; }
.stat-card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 16px 18px; }
.stat-flex { display: flex; align-items: center; gap: 12px; }
.stat-icon {
  width: 38px; height: 38px; border-radius: 10px; display: flex; align-items: center;
  justify-content: center; font-size: 17px; flex-shrink: 0;
}
.si-blue { background: var(--primary-light); }
.si-green { background: var(--success-light); }
.si-yellow { background: var(--warning-light); }
.si-cyan { background: var(--info-light); }
.stat-value { font-size: 22px; font-weight: 700; color: var(--gray-900); line-height: 1.2; }
.stat-label { font-size: 12px; color: var(--gray-500); }
.stat-sub { font-size: 11px; color: var(--gray-400); margin-top: 1px; }
.stat-card.warn .stat-value { color: var(--danger); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 1050px) { .grid-2 { grid-template-columns: 1fr; } }

/* === Tables === */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left; font-size: 11px; color: var(--gray-400); font-weight: 600; letter-spacing: .05em;
  text-transform: uppercase; padding: 10px 14px; border-bottom: 1px solid var(--gray-200); white-space: nowrap;
}
td { padding: 10px 14px; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--gray-50); }
.num { text-align: right; }
td.num { font-variant-numeric: tabular-nums; }

/* === Forms === */
.search-bar { display: flex; gap: 8px; margin-bottom: 14px; align-items: center; flex-wrap: wrap; }
.form-control {
  padding: 7px 11px; border: 1px solid var(--gray-200); border-radius: 8px; font-size: 13px;
  color: var(--gray-800); background: #fff; transition: border .12s, box-shadow .12s; font-family: inherit;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.form-control.grow { flex: 1; min-width: 160px; }
.form-control.sm { width: 96px; }
textarea.form-control { resize: vertical; width: 100%; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 12px; color: var(--gray-500); margin-bottom: 4px; font-weight: 500; }
.form-group .form-control { width: 100%; }
.form-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 130px; }
.req { color: var(--danger); }
.hint { font-size: 12px; color: var(--gray-400); }
.check-inline { display: inline-flex; align-items: center; gap: 5px; margin-right: 12px; font-size: 12.5px; color: var(--gray-600); cursor: pointer; white-space: nowrap; }
.check-inline input { accent-color: var(--primary); }
.rowSel, #selectAll { accent-color: var(--primary); width: 14px; height: 14px; }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; gap: 5px; padding: 7px 13px; border-radius: 8px;
  font-size: 12.5px; font-weight: 500; cursor: pointer; border: none; transition: all .12s;
  white-space: nowrap; font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: #fff; color: var(--gray-600); border: 1px solid var(--gray-200); }
.btn-outline:hover { border-color: var(--gray-400); color: var(--gray-900); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid transparent; }
.btn-danger:hover { background: var(--danger-light); }
.btn-sm { padding: 4px 9px; font-size: 12px; border-radius: 7px; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-link { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 12.5px; padding: 0; }

/* === Tags === */
.tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 6px; font-weight: 500; white-space: nowrap; }
.tag-blue { background: var(--primary-light); color: var(--primary-dark); }
.tag-green { background: var(--success-light); color: var(--success); }
.tag-yellow { background: var(--warning-light); color: var(--warning); }
.tag-red { background: var(--danger-light); color: var(--danger); }
.tag-gray { background: var(--gray-100); color: var(--gray-500); }
.tag-cyan { background: var(--info-light); color: var(--info); }

.pill-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 5px; }
.dot-on { background: var(--success); }
.dot-off { background: var(--gray-300); }

/* === Bulk bar === */
.bulk-bar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: var(--gray-50); border: 1px solid var(--gray-200); padding: 9px 14px;
  border-radius: 9px; margin-bottom: 14px; font-size: 12.5px;
}
.bulk-bar .spacer { flex: 1; }

/* === Shipment steps === */
.ship-card { margin-bottom: 14px; }
.steps { display: flex; align-items: flex-start; margin: 12px 0 4px; }
.step { flex: 1; text-align: center; position: relative; }
.step::before {
  content: ''; position: absolute; top: 11px; left: -50%; width: 100%; height: 2px;
  background: var(--gray-200); z-index: 0;
}
.step:first-child::before { display: none; }
.step.done::before { background: var(--success); }
.step-dot {
  width: 24px; height: 24px; border-radius: 50%; background: var(--gray-100); color: var(--gray-400);
  display: inline-flex; align-items: center; justify-content: center; font-size: 11.5px; font-weight: 700;
  position: relative; z-index: 1; border: 3px solid #fff;
}
.step.done .step-dot { background: var(--success); color: #fff; }
.step.current .step-dot { background: var(--primary); color: #fff; box-shadow: 0 0 0 3px var(--primary-light); }
.step-name { font-size: 12px; font-weight: 600; color: var(--gray-600); margin-top: 4px; }
.step.done .step-name { color: var(--success); }
.step-time { font-size: 10.5px; color: var(--gray-400); margin-top: 1px; }

.track-events { margin-top: 10px; border-top: 1px dashed var(--gray-200); padding-top: 10px; max-height: 200px; overflow-y: auto; }
.track-event { display: flex; gap: 10px; font-size: 12px; padding: 3px 0; color: var(--gray-600); }
.track-event .t { color: var(--gray-400); white-space: nowrap; font-variant-numeric: tabular-nums; }

/* === Alert boxes === */
.warn-box { background: var(--warning-light); border: 1px solid #fde68a; padding: 8px 13px; border-radius: 8px; font-size: 12.5px; margin-top: 8px; }
.ok-box { background: var(--success-light); border: 1px solid #bbf7d0; padding: 13px; border-radius: 8px; font-size: 13px; }
.info-box { background: var(--gray-50); border: 1px solid var(--gray-200); padding: 10px 14px; border-radius: 8px; font-size: 12.5px; color: var(--gray-600); }

/* === Modal === */
dialog { border: none; border-radius: 14px; padding: 0; box-shadow: 0 20px 50px rgba(15,23,42,.2); width: 100%; max-width: 540px; }
dialog::backdrop { background: rgba(15, 23, 42, .45); }
/* 商品详情要展示库存流水，给宽一点看得清楚 */
#productDlg { max-width: 940px; width: 92vw; }
#productDlg .stats-grid { grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 700px) { #productDlg .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.modal-header { padding: 15px 20px; border-bottom: 1px solid var(--gray-100); font-weight: 650; font-size: 14.5px; }
.modal-body { padding: 16px 20px; max-height: 70vh; overflow-y: auto; }
.modal-footer { padding: 12px 20px; border-top: 1px solid var(--gray-100); display: flex; justify-content: flex-end; gap: 8px; }

/* === Toast === */
.toast {
  position: fixed; bottom: 24px; right: 24px; background: var(--gray-900); color: #fff;
  padding: 11px 16px; border-radius: 10px; font-size: 13px; box-shadow: 0 8px 24px rgba(15,23,42,.25);
  z-index: 999; max-width: 420px;
}
.toast.err { background: var(--danger); }

/* === Login === */
.login-screen {
  position: fixed; inset: 0; background: var(--gray-50); z-index: 500;
  display: flex; align-items: center; justify-content: center;
}
.login-box {
  background: #fff; border-radius: 16px; padding: 34px 34px 30px; width: 340px;
  border: 1px solid var(--gray-200);
}
.login-box h1 { font-size: 17px; color: var(--gray-900); font-weight: 700; }
.login-box .sub { font-size: 12px; color: var(--gray-400); margin: 3px 0 20px; }

.readonly-note { font-size: 12px; color: var(--gray-400); }

/* === Dashboard: warehouse distribution === */
.wh-row { margin-bottom: 14px; }
.wh-row:last-child { margin-bottom: 4px; }
.wh-row-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 5px; }
.wh-name { font-size: 12.5px; font-weight: 600; color: var(--gray-700); }
.wh-units { font-size: 12.5px; font-weight: 600; color: var(--gray-500); font-variant-numeric: tabular-nums; }
.wh-track { height: 6px; background: var(--gray-100); border-radius: 3px; overflow: hidden; }
.wh-fill { height: 100%; background: var(--primary); border-radius: 3px; transition: width .3s; }

/* === Dashboard: alert feed === */
.feed-item { border-radius: 9px; padding: 9px 13px; margin-bottom: 8px; font-size: 12.5px; display: flex; gap: 9px; align-items: flex-start; }
.feed-item:last-child { margin-bottom: 0; }
.feed-item .fi { font-size: 13px; line-height: 1.5; flex-shrink: 0; }
.feed-item b { display: block; color: var(--gray-800); font-size: 12.5px; }
.feed-item .fd { color: var(--gray-500); font-size: 12px; }
.feed-warning { background: var(--warning-light); }
.feed-danger { background: var(--danger-light); }
.feed-info { background: var(--info-light); }
.feed-scroll { max-height: 320px; overflow-y: auto; }

/* dynamic item-rows for manual in/out */
.item-rows .form-row { margin-bottom: 6px; }