:root {
  --accent: #0db3a6; --accent-dark: #0a968b; --ink: #1f2d3d; --muted: #6b7785; --line: #e4e8ee;
  --bg: #f3f5f8; --card: #fff; --danger: #e5484d; --side: 232px;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.5 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--ink); background: var(--bg); }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 18px; margin: 0; }
h2 { font-size: 15px; margin: 20px 0 10px; color: var(--accent-dark); }

.side { position: fixed; inset: 0 auto 0 0; width: var(--side); background: #fff; border-right: 1px solid var(--line); display: flex; flex-direction: column; z-index: 10; }
.brand { padding: 16px; font-weight: 700; font-size: 15px; color: var(--ink); border-bottom: 1px solid var(--line); }
.side nav { flex: 1; overflow-y: auto; padding: 8px; }
.side .item { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; border-radius: 6px; color: var(--ink); }
.side .item.sub { padding-left: 24px; }
.side .item:hover { background: var(--bg); text-decoration: none; }
.side .item.on { background: #e6f7f5; color: var(--accent-dark); font-weight: 600; }
.side .group { padding: 12px 12px 4px; color: var(--muted); font-size: 12px; font-weight: 600; }
.badge { background: var(--danger); color: #fff; border-radius: 10px; padding: 0 7px; font-size: 12px; }
.me { border-top: 1px solid var(--line); padding: 10px 14px; display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: center; font-size: 13px; }
.me span { width: 100%; font-weight: 600; }

main { margin-left: var(--side); padding: 20px 24px 60px; min-width: 0; }
.menu-btn { display: none; margin-bottom: 12px; cursor: pointer; color: var(--accent-dark); }
.bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.btns { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.btns form, .me form { margin: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px; }
.card.narrow { max-width: 420px; }

.btn { display: inline-block; padding: 6px 14px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--ink); font: inherit; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--accent); color: var(--accent-dark); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); color: #fff; }
.btn.danger { color: var(--danger); }
.btn.sm { padding: 2px 10px; }
button.link { background: none; border: 0; padding: 0; color: var(--accent-dark); font: inherit; cursor: pointer; }

.msg { padding: 10px 14px; border-radius: 6px; margin-bottom: 12px; background: #e6f7f5; border: 1px solid #b5e6e0; }
.msg.error { background: #fdecec; border-color: #f5c2c4; color: #a4262c; }

.filters { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
input, select, textarea { font: inherit; color: inherit; padding: 6px 9px; border: 1px solid #cfd6df; border-radius: 6px; background: #fff; width: 100%; min-width: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid #b5e6e0; border-color: var(--accent); }
input[readonly] { background: #f3f5f8; color: var(--muted); }
.filters input, .filters select { width: auto; }
.filters input { min-width: 240px; }

.table-wrap { overflow-x: auto; padding: 0; }
.card.table-wrap { padding: 0; }
.table-wrap.short { max-height: 320px; overflow-y: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #f7f9fb; font-weight: 600; white-space: nowrap; position: sticky; top: 0; }
tr.click { cursor: pointer; }
tr.click:hover td { background: #f7fbfb; }
td.empty { text-align: center; color: var(--muted); padding: 28px; }
td.num, .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.r { text-align: right; }
.strong { font-weight: 600; }
.pager { display: flex; gap: 12px; align-items: center; justify-content: flex-end; margin-top: 12px; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 24px; margin: 0; }
.grid .wide, .grid .section { grid-column: 1 / -1; }
.section { font-weight: 600; color: var(--accent-dark); border-bottom: 1px solid var(--line); padding: 8px 0 4px; margin-top: 6px; }
.f label { display: block; margin-bottom: 4px; color: var(--muted); }
.f label i { color: var(--danger); font-style: normal; margin-right: 2px; }
.bad input, .bad select, .bad textarea { border-color: var(--danger); }
.err { color: var(--danger); font-size: 12px; }
.actions { margin-top: 20px; display: flex; gap: 10px; }

.lines { min-width: 900px; }
.lines th, .lines td { padding: 5px 6px; }
.lines td input { padding: 4px 6px; }
.lines .idx { width: 32px; color: var(--muted); text-align: center; padding-top: 10px; }
.lines .c-price input, .lines .c-qty input, .lines .c-order_qty input { width: 96px; text-align: right; }
.lines .c-unit input { width: 64px; }
.lines .c-product_code input, .lines .c-category input { width: 120px; }
.lines .subtotal { padding-top: 10px; }
.lines .c-name input, .lines .c-spec input { min-width: 170px; }
#add-line { margin: 8px 0 18px; }

.kv > div { min-width: 0; }
.kv dt { color: var(--muted); font-size: 12px; }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.kv.totals { margin: 14px 0; padding: 12px; background: #f7f9fb; border-radius: 6px; }
.kv.totals dd { font-weight: 600; font-size: 15px; }
.kv.meta { margin-top: 18px; padding-top: 12px; border-top: 1px dashed var(--line); grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tag { font-size: 12px; font-weight: 500; padding: 2px 8px; border-radius: 10px; background: #eef1f5; color: var(--muted); vertical-align: middle; }
.tag.s-pending { background: #fff4e0; color: #a35f00; }
.tag.s-approved { background: #e6f7f5; color: var(--accent-dark); }
.tag.s-rejected { background: #fdecec; color: #a4262c; }

.cards { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.kpi { border-radius: 8px; padding: 14px 16px; color: #24424a; background: linear-gradient(135deg, #dff3f1, #b9dfe0); }
.kpi.k3, .kpi.k4 { background: linear-gradient(135deg, #e3e6f3, #b9bfdc); }
.kpi.k5, .kpi.k6 { background: linear-gradient(135deg, #f1e6f4, #d3c0de); }
.kpi .t { font-size: 13px; opacity: .8; }
.kpi .v { font-size: 28px; font-weight: 600; }
.kpi small { font-size: 14px; margin-left: 2px; }
.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 12px; }
.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.two h2, .three h2 { margin-top: 0; color: var(--danger); }
.chart { display: flex; gap: 6px; height: 240px; align-items: stretch; }
.chart .col { flex: 1; display: flex; flex-direction: column; align-items: center; font-size: 11px; color: var(--muted); }
.chart .bars { flex: 1; width: 100%; display: flex; gap: 2px; align-items: flex-end; justify-content: center; border-bottom: 1px solid var(--line); }
.chart i { width: 40%; min-height: 1px; border-radius: 2px 2px 0 0; }
.chart i.in, .dot.in { background: #5aaee8; }
.chart i.out, .dot.out { background: #f08a80; }
.legend { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin: 0 4px 0 8px; }

body.login { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login-card { width: 100%; max-width: 340px; display: grid; gap: 14px; }
.login-card h1 { text-align: center; margin-bottom: 6px; }
.login-card label { color: var(--muted); display: grid; gap: 4px; }
.print-only { display: none; }

@media (max-width: 1100px) {
  .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .two, .three { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .side { transform: translateX(-100%); transition: transform .2s; box-shadow: 0 0 24px rgba(0,0,0,.2); }
  #nav-toggle:checked ~ .side { transform: none; }
  main { margin-left: 0; padding: 14px 16px 60px; }
  .menu-btn { display: inline-block; }
  .grid, .kv.meta { grid-template-columns: minmax(0, 1fr); }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filters input { min-width: 0; flex: 1; }
}
@media print {
  .side, .noprint, .menu-btn, .msg { display: none !important; }
  main { margin: 0; padding: 0; }
  .card { border: 0; padding: 0; }
  .print-only { display: block; }
  body { background: #fff; }
}