:root {
  --bg: #f6f5f1; --panel: #ffffff; --ink: #1d2320; --muted: #6b716d; --line: #e3e1da; --soft: #efede7;
  --accent: #1f6f5c; --accent-ink: #ffffff; --accent-soft: #e2efe9; --dr: #1f4f8f; --cr: #9a3b1f;
  --warn: #a8640a; --warn-soft: #fbf0dc; --bad: #b3261e; --bad-soft: #fbe5e3; --good: #1f6f5c;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --r: 8px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141716; --panel: #1b1f1d; --ink: #e8ebe9; --muted: #9aa29e; --line: #2c322f; --soft: #232825;
    --accent: #5fbf9f; --accent-ink: #0d1a15; --accent-soft: #1f3a31; --dr: #8ab4f0; --cr: #f0a487;
    --warn: #f0b860; --warn-soft: #3a2e17; --bad: #f28b82; --bad-soft: #3d1f1d;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.45 var(--sans); }
a { color: var(--accent); } a.btn { text-decoration: none; display: inline-block; }
button, input, select, textarea { font: inherit; color: inherit; }
.num, td.n, th.n { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }

/* layout */
.shell { display: grid; grid-template-columns: 228px 1fr; min-height: 100vh; }
.side { background: var(--panel); border-right: 1px solid var(--line); padding: 14px 10px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 8px; padding: 4px 8px 14px; font-weight: 700; letter-spacing: .2px; }
.brand .logo { width: 26px; height: 26px; border-radius: 6px; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-family: var(--mono); font-size: 13px; }
.brand small { display: block; font-weight: 400; color: var(--muted); font-size: 11px; }
.nav h6 { margin: 14px 8px 4px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 600; }
.nav a { display: flex; justify-content: space-between; align-items: center; padding: 6px 8px; border-radius: 6px; color: var(--ink); text-decoration: none; }
.nav a:hover { background: var(--soft); }
.nav a.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.badge { font-size: 11px; background: var(--warn-soft); color: var(--warn); border-radius: 10px; padding: 0 7px; font-weight: 600; }
main { padding: 20px 26px 60px; min-width: 0; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.top h1 { font-size: 20px; margin: 0; }
.top .sub { color: var(--muted); font-size: 13px; }
.menu-btn { display: none; }

/* controls */
.btn { border: 1px solid var(--line); background: var(--panel); padding: 7px 13px; border-radius: 7px; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.danger { color: var(--bad); }
.btn.sm { padding: 3px 9px; font-size: 12.5px; }
.btn:disabled { opacity: .5; cursor: default; }
input, select, textarea { border: 1px solid var(--line); background: var(--panel); border-radius: 6px; padding: 6px 9px; width: 100%; min-width: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
input[type=checkbox] { width: auto; }
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 3px; }
.field { margin-bottom: 10px; }
.grid { display: grid; gap: 12px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); } .g6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; margin-bottom: 14px; }
.card h3 { margin: 0 0 12px; font-size: 14.5px; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 14px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 12px 14px; }
.kpi .l { color: var(--muted); font-size: 12px; } .kpi .v { font-size: 20px; font-family: var(--mono); margin-top: 4px; }
.kpi.warn .v { color: var(--warn); }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 7px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-size: 11.5px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; background: var(--panel); position: sticky; top: 0; }
td:first-child, #bt td:nth-child(2) { white-space: nowrap; }
tr.click { cursor: pointer; } tr.click:hover td { background: var(--soft); }
tr.total td { font-weight: 700; border-top: 2px solid var(--ink); }
tr.grp td { background: var(--soft); font-weight: 600; }
tr.muted td { color: var(--muted); text-decoration: line-through; }
.tablewrap { overflow-x: auto; }
.dr { color: var(--dr); } .cr { color: var(--cr); }
.pill { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 10px; background: var(--soft); color: var(--muted); }
.pill.good { background: var(--accent-soft); color: var(--accent); } .pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.muted { color: var(--muted); } .small { font-size: 12px; }
.note { background: var(--warn-soft); color: var(--warn); padding: 9px 12px; border-radius: 6px; font-size: 13px; margin-bottom: 12px; }
.info { background: var(--accent-soft); color: var(--accent); padding: 9px 12px; border-radius: 6px; font-size: 13px; margin-bottom: 12px; }

.lines td { padding: 4px; } .lines input, .lines select { padding: 5px 7px; }
.totals { margin-left: auto; min-width: 260px; max-width: 340px; } .totals div { display: flex; justify-content: space-between; gap: 16px; padding: 3px 0; }
.totals div.big { font-weight: 700; font-size: 16px; border-top: 1px solid var(--line); margin-top: 4px; padding-top: 7px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; flex-wrap: wrap; }
.tabs a { padding: 7px 12px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.on { color: var(--ink); border-color: var(--accent); font-weight: 600; }

.conf { display: inline-block; width: 38px; height: 6px; border-radius: 3px; background: var(--soft); position: relative; vertical-align: middle; }
.conf i { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 3px; background: var(--accent); }
.conf.low i { background: var(--warn); } .conf.none i { background: var(--bad); }

.bars { display: flex; gap: 14px; align-items: flex-end; height: 150px; padding-top: 10px; }
.bars .m { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; }
.bars .pair { display: flex; gap: 3px; align-items: flex-end; height: 100%; width: 100%; justify-content: center; }
.bars .b { width: 40%; max-width: 22px; border-radius: 3px 3px 0 0; min-height: 1px; }
.bars .bi { background: var(--accent); } .bars .be { background: var(--cr); opacity: .75; }
.bars small { color: var(--muted); font-size: 11px; }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); } .legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px; display: none; z-index: 99; max-width: 90vw; }
#toast.err { background: var(--bad); color: #fff; }
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.35); display: grid; place-items: center; z-index: 50; padding: 16px; }
.modal { background: var(--panel); border-radius: 10px; padding: 18px; width: min(640px, 100%); max-height: 90vh; overflow-y: auto; }
.modal h3 { margin-top: 0; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: min(360px, 100%); }

/* printable invoice */
.inv { background: #fff; color: #111; padding: 28px; border: 1px solid var(--line); border-radius: var(--r); }
.inv table th { background: #fff; color: #555; } .inv h2 { margin: 0; }
.inv .hdr { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 18px; flex-wrap: wrap; }
@media print {
  .side, .top .row, .noprint, #toast { display: none !important; }
  .shell { display: block; } main { padding: 0; } body { background: #fff; }
  .inv { border: 0; padding: 0; } .card { border: 0; }
}
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: fixed; z-index: 40; width: 250px; left: -260px; transition: left .2s; box-shadow: 0 0 30px rgba(0,0,0,.2); }
  .side.open { left: 0; }
  .menu-btn { display: inline-block; }
  main { padding: 14px 16px 60px; }
  .g3, .g4, .g6 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) { .g2, .g3, .g4, .g6 { grid-template-columns: 1fr; } }
label.btn { display: inline-block; font-size: inherit; cursor: pointer; }