:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --ink: #1d2330;
  --ink-2: #5b6474;
  --line: #e2e5ea;
  --accent: #1f5f8b;
  --accent-ink: #ffffff;
  --accent-soft: #e6eff6;
  --owe: #b3261e;
  --owe-soft: #fbe9e7;
  --credit: #1e7a46;
  --credit-soft: #e5f4ec;
  --warn-soft: #fff5c2;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: 0 0 .75rem; letter-spacing: -.01em; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
h3 { font-size: 1rem; margin: 1.25rem 0 .5rem; }
p { margin: 0 0 .75rem; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 20px; padding-bottom: 48px; }

/* top bar */
.top { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top-in { display: flex; align-items: center; gap: 20px; min-height: 56px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); }
.top nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.top nav a { padding: 6px 10px; border-radius: 8px; color: var(--ink-2); }
.top nav a:hover { background: var(--bg); text-decoration: none; }
.top nav a.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.logout { margin-left: auto; }

/* building blocks */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.card.flush { padding: 0; overflow: hidden; }
.pad { padding: 14px 18px; margin: 0; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.head h1 { margin: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid2.wide-left { grid-template-columns: 2fr 1fr; }
.grid2 > .card { margin-bottom: 0; }
.grid2 + * { margin-top: 16px; }
.narrow { max-width: 720px; }
.scroll { overflow-x: auto; }
.muted { color: var(--ink-2); }
.small { font-size: .85rem; }
.r { text-align: right; }
.nowrap { white-space: nowrap; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: .92em; }
.owe { color: var(--owe); }
.credit { color: var(--credit); }
.empty { color: var(--ink-2); padding: 18px; margin: 0; }
.inline { display: inline; }
.yellow { background: var(--warn-soft); padding: 0 4px; border-radius: 4px; }
.tag { display: inline-block; font-size: .72rem; padding: 1px 6px; border-radius: 99px; background: var(--bg); border: 1px solid var(--line); color: var(--ink-2); vertical-align: middle; }

/* forms */
label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: .9rem; }
label .muted { font-weight: 400; }
label.check { flex-direction: row; align-items: center; font-weight: 400; }
input, select, textarea {
  font: inherit; font-weight: 400; color: var(--ink); background: #fff;
  border: 1px solid #c9ced6; border-radius: 8px; padding: 8px 10px; min-height: 38px; width: 100%;
}
input[type=checkbox] { width: auto; min-height: 0; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px 14px; margin: 0; }
legend { font-weight: 700; padding: 0 6px; }
.hint { font-weight: 400; font-size: .8rem; color: var(--ink-2); }
.err { font-weight: 600; font-size: .82rem; color: var(--owe); }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.filters select, .filters input { width: auto; min-width: 180px; }
.monthpick { display: flex; gap: 6px; align-items: center; }
.monthpick input { width: 170px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-weight: 600; font-size: .9rem; min-height: 38px; padding: 7px 14px;
  border-radius: 8px; border: 1px solid #c9ced6; background: var(--surface); color: var(--ink); cursor: pointer;
}
.btn:hover { text-decoration: none; background: var(--bg); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.disabled { opacity: .4; pointer-events: none; }
button.link { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); cursor: pointer; }
button.link:hover { text-decoration: underline; }
.danger { color: var(--owe) !important; }
.danger-zone { margin-top: 8px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

/* messages */
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; border: 1px solid; }
.flash.ok { background: var(--credit-soft); border-color: #b5dec6; color: #14532d; }
.flash.error { background: var(--owe-soft); border-color: #f1c1bb; color: #7f1d1d; }

/* tables */
.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.tbl th.r, .tbl td.r { text-align: right; }
.tbl thead th { font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: var(--ink-2); background: #fafbfc; white-space: nowrap; }
.tbl tbody tr:hover { background: #fafbfc; }
.tbl tfoot td { font-weight: 700; background: #fafbfc; border-bottom: 0; }

/* stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; display: flex; flex-direction: column; gap: 2px; }
.stat span { font-size: .8rem; color: var(--ink-2); }
.stat strong { font-size: 1.35rem; }
.stat small { font-size: .78rem; color: var(--ink-2); }
.progress { height: 10px; background: var(--bg); border-radius: 99px; overflow: hidden; }
.progress div { height: 100%; background: var(--credit); }
.progress-label { display: flex; justify-content: space-between; font-size: .85rem; margin-bottom: 6px; }

/* month workflow */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { display: flex; gap: 12px; }
.step > b { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; }
.step p { color: var(--ink-2); font-size: .9rem; margin: 4px 0 10px; }
.calc { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; background: var(--bg); border-radius: 8px; padding: 12px; }
.calc div { display: flex; flex-direction: column; }
.calc span { font-size: .75rem; color: var(--ink-2); }

/* upload preview */
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.chip { display: inline-block; font-size: .78rem; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--bg); color: var(--ink-2); white-space: nowrap; }
.chip.st-new { background: var(--credit-soft); color: var(--credit); }
.chip.st-update { background: var(--accent-soft); color: var(--accent); }
.chip.st-clear { background: var(--warn-soft); color: #7a5a00; }
.chip.st-error { background: var(--owe-soft); color: var(--owe); }
.st-row-skip td, .st-row-same td { color: var(--ink-2); }
.st-row-error td { background: #fff8f7; }

.getting-started li { margin-bottom: 8px; }
.getting-started li.done { color: var(--ink-2); text-decoration: line-through; }

.auth { max-width: 400px; margin: 8vh auto 0; }
.auth h1 { text-align: center; }

@media (max-width: 860px) {
  .grid2, .grid2.wide-left, .steps { grid-template-columns: 1fr; }
  .calc { grid-template-columns: repeat(2, 1fr); }
  .logout { margin-left: 0; }
}

/* ---------- printable statement ---------- */
.printpage { background: #fff; padding: 16px; }
.print-bar { display: flex; gap: 8px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.sheet { margin-bottom: 32px; }
.sheet-head { display: flex; justify-content: space-between; align-items: flex-end; border-bottom: 2px solid var(--ink); padding-bottom: 8px; margin-bottom: 8px; }
.sheet-head h1 { font-size: 1.2rem; margin: 0; }
.sheet-head h2 { margin: 0; }
.sheet-head p { margin: 0; }
.ptbl { width: 100%; border-collapse: collapse; font-size: 12px; }
.ptbl th, .ptbl td { border: 1px solid #777; padding: 6px 6px; text-align: left; }
.ptbl th { background: #eee; font-size: 11px; }
.ptbl .r { text-align: right; }
.ptbl tbody td { height: 30px; }
.ptbl tfoot td { font-weight: 700; background: #f3f3f3; }
.w-amt { width: 90px; } .w-date { width: 78px; } .w-ref { width: 90px; } .w-sign { width: 110px; }
.sheet-foot { display: flex; justify-content: space-between; gap: 16px; margin-top: 28px; font-size: 13px; flex-wrap: wrap; }

@media print {
  @page { size: A4 landscape; margin: 10mm; }
  body { background: #fff; }
  .noprint, .top, .btn, .flash, .monthpick { display: none !important; }
  .printpage { padding: 0; }
  .sheet { break-after: page; margin: 0; }
  .sheet:last-of-type { break-after: auto; }
  .ptbl thead { display: table-header-group; }
  .ptbl tr { break-inside: avoid; }
  .card { border: 0; padding: 0; }
  a { color: inherit; }
}