:root {
  --bg: #f6f6f4;
  --panel: #ffffff;
  --ink: #16181d;
  --ink-2: #4a4f5a;
  --ink-3: #7b808b;
  --line: #e4e4e0;
  --accent: #1f4fd6;
  --accent-soft: #e8eefc;
  --good: #1d7a46;
  --good-soft: #e3f3ea;
  --warn: #8a5a00;
  --warn-soft: #fbf0d6;
  --bad: #b3261e;
  --bad-soft: #fbe5e3;
  --r: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", sans-serif;
  font-size: 14px;
  color: var(--ink);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); }
h1, h2, h3 { margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
h1 { font-size: 24px; font-weight: 650; }
h2 { font-size: 16px; font-weight: 620; }
h3 { font-size: 13px; font-weight: 600; color: var(--ink-2); }
.num, td.n, th.n { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.muted { color: var(--ink-3); }
a { color: var(--accent); cursor: pointer; text-decoration: none; }

.app { display: grid; grid-template-columns: 200px 1fr; min-height: 100vh; }
.side { background: var(--ink); color: #e9eaee; padding: 20px 12px; display: flex; flex-direction: column; gap: 20px; position: sticky; top: 0; height: 100vh; }
.brand { font-weight: 700; font-size: 17px; padding: 0 10px; }
.brand span { font-weight: 400; color: #9da3b0; }
nav { display: flex; flex-direction: column; gap: 2px; }
nav a { color: #c6c9d2; padding: 8px 10px; border-radius: 7px; }
nav a:hover { background: #262a33; color: #fff; }
nav a.on { background: #2d3240; color: #fff; }
.who { margin-top: auto; font-size: 12px; color: #c6c9d2; padding: 0 10px; }
.who a { color: #fff; text-decoration: underline; }
.who:empty + .save { margin-top: auto; }
.login-page { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 28px; width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 14px; }
.login input { width: 100%; }
.login .err { color: var(--bad); font-size: 13px; }
.brand-dark { font-weight: 700; font-size: 15px; }
.brand-dark span { font-weight: 400; color: var(--ink-3); }
.save { font-size: 12px; color: #9da3b0; padding: 0 10px; }
.save.err { color: #ff8a80; }

.main { padding: 28px 32px 60px; max-width: 1280px; width: 100%; }
.head { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.head h1 { margin-right: auto; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px; margin-bottom: 18px; }
.panel > h2 { margin-bottom: 12px; }
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: 1fr 1fr; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 18px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 16px; }
.kpi .l { font-size: 12px; color: var(--ink-3); }
.kpi .v { font-size: 22px; font-weight: 650; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi .s { font-size: 12px; color: var(--ink-3); margin-top: 2px; }
.kpi.main { border-color: var(--accent); }
.kpi.main .v { font-size: 26px; }

button, .btn { font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 7px 12px; border-radius: 8px; cursor: pointer; white-space: nowrap; }
button:hover { border-color: #c9c9c4; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 550; }
button.primary:hover { background: #1a43b8; }
button.danger { color: var(--bad); }
button.sm { padding: 4px 9px; font-size: 12px; }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea { font: inherit; color: var(--ink); border: 1px solid var(--line); border-radius: 7px; padding: 6px 9px; background: #fff; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea { width: 100%; min-height: 60px; resize: vertical; }
label.f { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--ink-2); }
.row { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
.filters input[type=search] { min-width: 220px; }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; font-weight: 550; color: var(--ink-3); padding: 7px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 7px 8px; border-bottom: 1px solid #efefeb; vertical-align: top; }
tr.click:hover td { background: #fafaf8; cursor: pointer; }
tr.total td { font-weight: 650; border-top: 1px solid var(--line); border-bottom: none; }
tr.sub td { font-weight: 600; color: var(--ink-2); background: #fafaf8; }
td.desc { max-width: 340px; color: var(--ink-2); }
td.desc b { color: var(--ink); font-weight: 550; }
.in { color: var(--good); }
.tablewrap { overflow-x: auto; }

.tag { display: inline-block; font-size: 11px; padding: 2px 7px; border-radius: 20px; font-weight: 550; white-space: nowrap; }
.tag.business { background: var(--good-soft); color: var(--good); }
.tag.personal { background: var(--bad-soft); color: var(--bad); }
.tag.confirm { background: var(--warn-soft); color: var(--warn); }
.tag.internal { background: #eeeeea; color: var(--ink-3); }
.tag.draft { background: #eeeeea; color: var(--ink-2); }
.tag.sent { background: var(--accent-soft); color: var(--accent); }
.tag.paid { background: var(--good-soft); color: var(--good); }
.tag.void { background: #eeeeea; color: var(--ink-3); text-decoration: line-through; }
.tag.overdue { background: var(--bad-soft); color: var(--bad); }

.note { font-size: 12px; color: var(--ink-3); margin-top: 8px; }
.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 13px; }
.alert.ok { background: var(--good-soft); color: var(--good); }
.alert.warn { background: var(--warn-soft); color: var(--warn); }
.alert.bad { background: var(--bad-soft); color: var(--bad); }
.empty { padding: 40px 20px; text-align: center; color: var(--ink-3); }
.empty h2 { color: var(--ink); margin-bottom: 6px; }
.empty button { margin-top: 14px; }

.bars { display: flex; align-items: flex-end; gap: 14px; height: 180px; padding-top: 10px; }
.bar { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.bar .pair { display: flex; gap: 3px; align-items: flex-end; height: 100%; width: 100%; justify-content: center; }
.bar .b { width: 40%; max-width: 26px; border-radius: 3px 3px 0 0; min-height: 1px; }
.bar .b.i { background: var(--accent); }
.bar .b.e { background: #c9ccd4; }
.bar .m { font-size: 11px; color: var(--ink-3); }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--ink-3); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

.modal { position: fixed; inset: 0; background: rgba(15, 17, 22, .45); display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto; z-index: 20; }
.modal .box { background: var(--panel); border-radius: 12px; padding: 22px 24px; width: 100%; max-width: 760px; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.modal .box.wide { max-width: 980px; }
.modal .box > h2 { margin-bottom: 16px; }
.modal .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; }
.modal .actions .left { margin-right: auto; }
.items td { padding: 4px; border: none; }
.items input { width: 100%; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; z-index: 30; font-size: 13px; animation: up .18s ease-out; }
@keyframes up { from { opacity: 0; transform: translate(-50%, 6px); } }

/* Invoice document (screen preview + print) */
.print-root { display: none; }
.inv-doc { background: #fff; color: #111; padding: 48px 56px; font-size: 13px; line-height: 1.45; }
.inv-doc .top { display: flex; justify-content: space-between; margin-bottom: 36px; }
.inv-doc h1 { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; }
.inv-doc .meta td { padding: 2px 0 2px 18px; border: none; }
.inv-doc .meta td:first-child { color: #666; padding-left: 0; }
.inv-doc .parties { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 30px; }
.inv-doc .parties h3 { color: #666; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 4px; }
.inv-doc table.lines th { color: #666; border-bottom: 1.5px solid #111; padding: 8px 6px; }
.inv-doc table.lines td { padding: 9px 6px; border-bottom: 1px solid #e6e6e6; }
.inv-doc .totals { margin-left: auto; width: 280px; margin-top: 14px; }
.inv-doc .totals td { padding: 4px 6px; border: none; }
.inv-doc .totals tr.grand td { font-weight: 700; font-size: 15px; border-top: 1.5px solid #111; padding-top: 8px; }
.inv-doc .foot { margin-top: 40px; color: #555; font-size: 12px; white-space: pre-wrap; }

@media print {
  @page { size: A4; margin: 0; }
  body { background: #fff; }
  .app, .modal, .toast { display: none !important; }
  .print-root { display: block; }
}
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .side { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; }
  nav { flex-direction: row; flex-wrap: wrap; }
  .g2, .g3 { grid-template-columns: 1fr; }
  .main { padding: 20px 16px; }
}