:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #2563eb;
  --brand-d: #1d4ed8;
  --green: #16a34a;
  --red: #dc2626;
  --amber: #d97706;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.05);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.nav .brand { font-weight: 700; margin-right: 14px; color: var(--brand-d); }
.nav a.link {
  padding: 6px 12px; border-radius: 8px; color: var(--muted); font-size: 14px;
}
.nav a.link:hover, .nav a.link.active { background: #eef2ff; color: var(--brand-d); text-decoration: none; }
.nav .spacer { flex: 1; }
.nav .logout { color: var(--red); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 24px 20px 60px; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 28px 0 12px; }
.sub { color: var(--muted); font-size: 14px; margin-bottom: 18px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 20px 0; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px; box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 13px; }
.card .value { font-size: 26px; font-weight: 700; margin-top: 6px; }
.card a.btn { display: inline-block; margin-top: 12px; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px){ .grid2 { grid-template-columns: 1fr; } }

.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px; box-shadow: var(--shadow); margin-bottom: 20px;
}
.panel h3 { margin: 0 0 14px; font-size: 16px; }

form .row { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; color: var(--muted); }
input, select {
  padding: 9px 11px; border: 1px solid var(--line); border-radius: 9px; font-size: 14px;
  background: #fff; color: var(--ink); min-width: 120px;
}
input:focus, select:focus { outline: 2px solid #c7d6ff; border-color: var(--brand); }

button, .btn {
  cursor: pointer; border: none; border-radius: 9px; padding: 9px 16px; font-size: 14px;
  background: var(--brand); color: #fff; font-weight: 600;
}
button:hover, .btn:hover { background: var(--brand-d); text-decoration: none; }
.btn.ghost { background: #eef2ff; color: var(--brand-d); }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn.danger { background: #fee2e2; color: var(--red); }
.btn.ok { background: #dcfce7; color: var(--green); }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 9px 10px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; background: #fafbff; }
tbody tr:hover { background: #f9fafd; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.pos { color: var(--green); }
.neg { color: var(--red); }
.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill.pending { background: #fef3c7; color: var(--amber); }
.pill.approved { background: #dcfce7; color: var(--green); }

.login-wrap { max-width: 380px; margin: 8vh auto; }
.login-wrap .panel { padding: 28px; }
.err { color: var(--red); font-size: 13px; margin-top: 10px; }
.muted { color: var(--muted); }
.tag { display:inline-block; padding:2px 8px; border-radius:6px; background:#eef2ff; color:var(--brand-d); font-size:12px; }
.scroll { overflow-x: auto; }