:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #898781;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;
  --good: #006300;
  --bad: #d03b3b;
  /* Sankey groups (validated categorical slots: aqua, blue, orange, violet, green, red) */
  --g-income: #1baf7a;
  --g-center: #898781;
  --g-expense: #2a78d6;
  --g-card: #eb6834;
  --g-savings: #4a3aa7;
  --g-saved: #008300;
  --g-deficit: #e34948;
  --g-uncategorized: #b5b3ab;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #262624;
    --text: #ffffff;
    --text-2: #c3c2b7;
    --muted: #898781;
    --border: rgba(255, 255, 255, 0.10);
    --accent: #3987e5;
    --good: #0ca30c;
    --bad: #e66767;
    --g-income: #199e70;
    --g-expense: #3987e5;
    --g-card: #d95926;
    --g-savings: #9085e9;
    --g-deficit: #e66767;
    --g-uncategorized: #6b6a65;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --surface-2: #262624; --text: #ffffff; --text-2: #c3c2b7;
  --border: rgba(255, 255, 255, 0.10); --accent: #3987e5; --good: #0ca30c; --bad: #e66767;
  --g-income: #199e70; --g-expense: #3987e5; --g-card: #d95926; --g-savings: #9085e9;
  --g-deficit: #e66767; --g-uncategorized: #6b6a65;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.top {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--surface);
}
header.top .brand { font-weight: 700; font-size: 17px; color: var(--text); }
header.top nav { display: flex; gap: 16px; }
main { max-width: 1200px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 28px 0 10px; }
.sub { color: var(--text-2); margin: 0 0 20px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.num { font-variant-numeric: tabular-nums; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: 8px; padding: 8px 14px; font: inherit;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--bad); }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; border: 1px solid var(--border); }
.flash.error { border-color: var(--bad); color: var(--bad); }
.flash.ok { border-color: var(--good); color: var(--good); }
.banner { display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px 16px; border-radius: 10px; border: 1px solid var(--g-card); margin-bottom: 18px; }

/* Upload */
.drop {
  display: block; border: 2px dashed var(--border); border-radius: 10px; padding: 32px;
  text-align: center; cursor: pointer; color: var(--text-2);
}
.drop.over, .drop:hover { border-color: var(--accent); }
.drop input { display: none; }
.drop strong { color: var(--text); display: block; font-size: 16px; margin-bottom: 4px; }
.files { margin: 12px 0; color: var(--text-2); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
td.r, th.r { text-align: right; }

/* Stat tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin: 18px 0; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.tile .label { color: var(--text-2); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.tile .value { font-size: 24px; font-weight: 650; margin-top: 2px; }
.swatch { width: 10px; height: 10px; border-radius: 3px; display: inline-block; flex: none; }
.statements { display: flex; flex-wrap: wrap; gap: 8px 20px; color: var(--text-2); font-size: 13px; }
.ok-text { color: var(--good); }
.bad-text { color: var(--bad); }

#chart { width: 100%; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; color: var(--text-2); font-size: 13px; margin-top: 8px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }

/* Review */
.review { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.tabs button { border: 1px solid var(--border); background: var(--surface); color: var(--text-2);
  padding: 6px 12px; border-radius: 999px; cursor: pointer; font: inherit; font-size: 13px; }
.tabs button.on { background: var(--text); color: var(--surface); border-color: var(--text); }
.txns { max-height: calc(100vh - 220px); overflow: auto; padding: 0; }
.txn { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 10px 14px;
  border-bottom: 1px solid var(--border); cursor: pointer; }
.txn:hover { background: var(--surface-2); }
.txn.sel { background: var(--surface-2); box-shadow: inset 3px 0 0 var(--accent); }
.txn .desc { font-weight: 550; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.txn .meta { color: var(--muted); font-size: 12.5px; }
.txn .amt { text-align: right; font-variant-numeric: tabular-nums; }
.amt.in { color: var(--good); }
.chip { font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-2); }
.chip.none { border-color: var(--g-card); color: var(--g-card); }
.picker { position: sticky; top: 16px; }
.picker .which { font-size: 18px; font-weight: 650; margin: 0 0 2px; overflow-wrap: anywhere; }
.picker h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin: 16px 0 8px; }
.cats { display: flex; flex-wrap: wrap; gap: 6px; }
.cats button { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); border-radius: 8px; padding: 6px 10px; cursor: pointer; font: inherit; font-size: 14px; }
.cats button:hover { background: var(--surface-2); }
.cats button.current { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.remember { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 14px; color: var(--text-2); font-size: 14px; }
input[type=text], select { font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; }
.remember input[type=text] { flex: 1; min-width: 160px; }
.newcat { display: flex; flex-wrap: wrap; gap: 6px; }
.newcat input { flex: 1; min-width: 140px; }
.hint { color: var(--muted); font-size: 12.5px; margin-top: 10px; }
.empty { padding: 28px; text-align: center; color: var(--text-2); }

@media (max-width: 760px) {
  .review { grid-template-columns: 1fr; }
  .picker { position: static; }
  .txns { max-height: 50vh; }
  header.top { padding: 12px 16px; }
}

/* Phone / installed-app additions */
.scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.scroll table { min-width: 560px; }
.nowrap { white-space: nowrap; }
label.btn { cursor: pointer; }
.btn:disabled { opacity: .6; cursor: progress; }
header.top { padding-top: max(14px, env(safe-area-inset-top)); position: sticky; top: 0; z-index: 10; }
main { padding-bottom: max(64px, env(safe-area-inset-bottom)); }
@media (max-width: 760px) {
  main { padding: 16px 16px 64px; }
  .card { padding: 14px; }
  .chart-card { padding: 8px; }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .tile { padding: 10px 12px; }
  .tile .value { font-size: 19px; }
  .drop { padding: 24px 12px; }
  th, td { padding: 8px 6px; }
  .cats button { padding: 9px 12px; }
  .banner { flex-wrap: wrap; }
}