:root {
  --bg: #f4f6f9; --card: #fff; --text: #1f2937; --muted: #6b7280; --line: #e5e7eb;
  --primary: #2563eb; --primary-d: #1d4ed8; --ok: #16a34a; --warn: #d97706; --err: #dc2626;
  --nav: #111827; --nav-text: #d1d5db;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.5 -apple-system, "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.layout { display: flex; min-height: 100vh; }
nav.side { width: 200px; background: var(--nav); color: var(--nav-text); padding: 16px 0; flex-shrink: 0; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
nav.side .brand { color: #fff; font-weight: 700; font-size: 16px; padding: 4px 20px 16px; }
nav.side .group { color: #9ca3af; font-size: 11px; padding: 12px 20px 4px; text-transform: uppercase; letter-spacing: .05em; }
nav.side a { display: block; color: var(--nav-text); padding: 7px 20px; }
nav.side a:hover, nav.side a.active { background: #1f2937; color: #fff; text-decoration: none; }
nav.side .user { padding: 16px 20px; color: #9ca3af; font-size: 12px; border-top: 1px solid #374151; margin-top: 12px; }
main { flex: 1; padding: 20px 28px; min-width: 0; }
h1 { font-size: 20px; margin: 0 0 14px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
h1 .actions { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
h2 { font-size: 15px; margin: 18px 0 8px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin-bottom: 16px; }
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 14px; background: #dcfce7; color: #166534; }
.flash.err { background: #fee2e2; color: #991b1b; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { padding: 7px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { background: #f9fafb; font-weight: 600; color: #374151; white-space: nowrap; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr:hover td { background: #f9fafb; }
tfoot td { font-weight: 600; background: #f9fafb; }
.btn { display: inline-block; padding: 6px 14px; border-radius: 6px; border: 1px solid var(--line); background: #fff; color: var(--text); cursor: pointer; font-size: 13px; line-height: 1.4; }
.btn:hover { background: #f3f4f6; text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-d); }
.btn.danger { color: var(--err); border-color: #fca5a5; }
.btn.danger:hover { background: #fef2f2; }
.btn.sm { padding: 3px 9px; font-size: 12px; }
form.inline { display: inline; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar input, .toolbar select { height: 32px; }
input, select, textarea { font: inherit; padding: 5px 8px; border: 1px solid #d1d5db; border-radius: 6px; background: #fff; color: var(--text); }
input:focus, select:focus, textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--primary); }
input[type=number] { text-align: right; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px 16px; }
.grid label, .field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 3px; }
.grid input, .grid select, .grid textarea, .field input, .field select { width: 100%; }
.grid .wide { grid-column: 1 / -1; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; }
.stat .label { color: var(--muted); font-size: 12px; }
.stat .value { font-size: 22px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; background: #e5e7eb; color: #374151; }
.tag.draft { background: #fef3c7; color: #92400e; }
.tag.confirmed, .tag.settled { background: #dcfce7; color: #166534; }
.tag.cancelled, .tag.void { background: #f3f4f6; color: #6b7280; text-decoration: line-through; }
.tag.open { background: #fee2e2; color: #991b1b; }
.tag.partial { background: #ffedd5; color: #9a3412; }
.warn { color: var(--warn); } .err { color: var(--err); } .ok { color: var(--ok); } .muted { color: var(--muted); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 1000px) { .two { grid-template-columns: 1fr; } }
.lines td input { width: 100%; min-width: 60px; }
.lines td.act { white-space: nowrap; }
.suggest { position: absolute; background: #fff; border: 1px solid var(--line); border-radius: 6px; box-shadow: 0 4px 12px rgba(0,0,0,.08); max-height: 260px; overflow: auto; z-index: 10; min-width: 420px; }
.suggest div { padding: 6px 10px; cursor: pointer; }
.suggest div:hover, .suggest div.active { background: #eff6ff; }
.rel { position: relative; }
details summary { cursor: pointer; color: var(--primary); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.tabs a { padding: 8px 14px; border-bottom: 2px solid transparent; color: var(--muted); }
.tabs a.active { color: var(--primary); border-color: var(--primary); }
.tabs a:hover { text-decoration: none; color: var(--text); }
.login { max-width: 360px; margin: 12vh auto; }
.login input { width: 100%; margin-bottom: 12px; }
@media print { nav.side, .noprint { display: none !important; } main { padding: 0; } body { background: #fff; } }
tr[data-href] { cursor: pointer; }
tr[data-href]:hover td { background: #eff6ff; }
table.dense { font-size: 12.5px; }
table.dense th, table.dense td { padding: 5px 6px; }
table.dense th { white-space: normal; text-align: right; line-height: 1.25; }
table.dense th:nth-child(2), table.dense td:nth-child(2) { text-align: left; min-width: 210px; }
tr.section td { background: #eef2f7; font-weight: 600; color: #1f3864; }
tr.section:hover td { background: #eef2f7; }
table.rates td input, table.rates td select { width: 100%; min-width: 0; }
table.rates td input[type=checkbox] { width: auto; }
table.tariff th { text-align: right; }
table.tariff td.hl, table.tariff th.hl { background: #fff9c4; font-weight: 600; }
table.tariff tr.zone-used td:first-child { box-shadow: inset 3px 0 0 #f59e0b; }
table.tariff tr.found td { background: #dbeafe; }
table.dense.rates th:nth-child(2), table.dense.rates td:nth-child(2), table.dense.tariff th:nth-child(2), table.dense.tariff td:nth-child(2) { min-width: 0; }
table.tariff td { vertical-align: middle; }