:root {
  --bg: #f6f8fa;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --brand: #0e7490;
  --brand-ink: #ffffff;
  --ok: #15803d;
  --warn: #b45309;
  --err: #b91c1c;
  --line: #e5e7eb;
}
* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}
main { max-width: 1080px; margin: 0 auto; padding: 1rem; padding-bottom: 4rem; }

.topnav {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  background: var(--brand); color: var(--brand-ink);
  padding: .6rem 1rem; position: sticky; top: 0; z-index: 10;
}
.topnav .brand { color: var(--brand-ink); font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.topnav .links { display: flex; gap: .25rem; flex-wrap: wrap; }
.topnav a { color: var(--brand-ink); text-decoration: none; padding: .35rem .6rem; border-radius: 8px; white-space: nowrap; }
.topnav a.on, .topnav a:hover { background: rgba(255,255,255,.18); }

h1 { font-size: 1.4rem; margin: .5rem 0 1rem; }
.muted { color: var(--muted); }
.error { color: var(--err); }
.warn { color: var(--warn); font-size: .85rem; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 1rem; margin-bottom: 1rem;
}

.btn {
  display: inline-block; border: 1px solid var(--line); border-radius: 10px;
  padding: .6rem 1.1rem; font-size: 1rem; cursor: pointer; background: var(--card);
  color: var(--ink); text-decoration: none;
}
.btn-primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn-ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn-danger { background: #fff; border-color: var(--err); color: var(--err); }
.btn-block { width: 100%; }
.btn:active { transform: translateY(1px); }

input, select {
  font-size: 1rem; padding: .5rem .6rem; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink); max-width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--brand); border-color: var(--brand); }

.login-box { max-width: 340px; margin: 14vh auto 0; text-align: center; }
.login-box input { width: 100%; margin-bottom: .8rem; text-align: center; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .8rem; }
.tile {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.1rem 1rem; text-decoration: none; color: var(--ink); text-align: center;
}
.tile .big { font-size: 1.8rem; display: block; }
.tile .n { font-size: 1.5rem; font-weight: 700; }
.tile:hover { border-color: var(--brand); }

.drop {
  border: 2px dashed var(--brand); border-radius: 14px; background: #ecfeff;
  padding: 2.2rem 1rem; text-align: center; cursor: pointer;
}
.drop input[type=file] { display: none; }

.pend { border-left: 4px solid var(--warn); }
.pend.lowconf { border-left-color: var(--err); }
.row-grid { display: grid; grid-template-columns: 90px 1fr; gap: .8rem; align-items: start; }
.thumb { width: 90px; height: 90px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); background: #fff; }
.thumb-pdf {
  width: 90px; height: 90px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 8px; font-size: 2rem; background: #fff; text-decoration: none;
}
.fields { display: flex; flex-wrap: wrap; gap: .5rem .6rem; }
.fields label { display: flex; flex-direction: column; font-size: .75rem; color: var(--muted); gap: .15rem; }
.conf { font-size: .78rem; }
.conf.hi { color: var(--ok); }
.conf.lo { color: var(--err); }

table.ledger { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 12px; overflow: hidden; }
table.ledger th, table.ledger td { padding: .55rem .6rem; border-bottom: 1px solid var(--line); text-align: left; font-size: .9rem; }
table.ledger th { background: #f1f5f9; }
td.amt, th.amt { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.rev { color: var(--ok); }
.attach { cursor: pointer; display: inline-block; min-width: 1.4rem; text-align: center;
  border: 1px dashed var(--line); border-radius: 6px; padding: 0 .35rem; color: var(--muted); }
.attach:hover { border-color: var(--brand); color: var(--brand); }
.catrow { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; padding: .5rem .6rem; }
.catrow input, .catrow select { padding: .35rem .45rem; }
.tbl-wrap { overflow-x: auto; }

.stickybar {
  position: sticky; bottom: 0; background: var(--card); border-top: 1px solid var(--line);
  padding: .7rem 1rem; display: flex; gap: .8rem; align-items: center; margin: 0 -1rem;
}
.flash { padding: .7rem 1rem; border-radius: 10px; margin-bottom: 1rem; }
.flash.ok { background: #dcfce7; color: var(--ok); }
.flash.err { background: #fee2e2; color: var(--err); }

@media (max-width: 640px) {
  html { font-size: 15px; }
  .row-grid { grid-template-columns: 70px 1fr; }
  .thumb, .thumb-pdf { width: 70px; height: 70px; }
}