:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #16181d;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
  --pos: #047857;
  --neg: #b91c1c;
  --warn: #b45309;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .06), 0 2px 8px rgba(0, 0, 0, .04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #181b21;
    --text: #e8eaed;
    --muted: #9aa0a9;
    --line: #2a2e36;
    --accent: #2dd4bf;
    --accent-soft: #123b37;
    --pos: #34d399;
    --neg: #f87171;
    --warn: #fbbf24;
    --shadow: none;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
#app { max-width: 640px; margin: 0 auto; padding: 0 16px calc(84px + env(safe-area-inset-bottom)); }
.top { display: flex; align-items: center; justify-content: space-between; padding: 14px 0 6px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; }
h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 22px 0 8px; font-weight: 600; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.card + .card { margin-top: 10px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.row { display: flex; align-items: center; gap: 10px; }
.row.between { justify-content: space-between; }
.grow { flex: 1; min-width: 0; }
.wrap { flex-wrap: wrap; }

.balances { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; }
.balance .name { font-weight: 600; }
.balance .val { font-size: 22px; font-weight: 700; margin-top: 2px; }

.settle { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; }
.settle img { width: 128px; height: 128px; border-radius: 8px; background: #fff; image-rendering: pixelated; cursor: zoom-in; }
.settle .amount { font-size: 22px; font-weight: 700; }
.qr-big { position: fixed; inset: 0; background: rgba(0,0,0,.8); display: grid; place-items: center; z-index: 30; padding: 16px; }
.qr-big img { width: min(90vw, 420px); background: #fff; border-radius: 12px; image-rendering: pixelated; }

.entry { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.entry:last-child { border-bottom: 0; }
.entry .ic { width: 36px; height: 36px; flex: none; border-radius: 10px; display: grid; place-items: center; background: var(--accent-soft); font-size: 18px; }
.entry .title { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.entry .amt { font-weight: 700; text-align: right; }
.tag { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); margin-left: 6px; vertical-align: 1px; }
.day { font-size: 13px; color: var(--muted); font-weight: 600; margin: 14px 0 0; }

label { display: block; font-size: 14px; color: var(--muted); margin: 12px 0 4px; }
input, select, textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; min-height: 46px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
input.big { font-size: 26px; font-weight: 700; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: inherit; font-weight: 600;
  border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 10px; padding: 10px 14px; min-height: 44px; cursor: pointer; text-decoration: none;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .btn.primary { color: #062925; } }
.btn.danger { color: var(--neg); }
.btn.block { width: 100%; }
.btn:disabled { opacity: .5; cursor: default; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 99px; padding: 8px 14px; font: inherit; cursor: pointer; min-height: 40px; }
.chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .chip.on { color: #062925; } }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; background: var(--line); border-radius: 10px; padding: 3px; gap: 3px; }
.seg button { border: 0; background: transparent; font: inherit; padding: 8px; border-radius: 8px; color: var(--text); cursor: pointer; }
.seg button.on { background: var(--card); font-weight: 600; box-shadow: var(--shadow); }
.share-row { display: grid; grid-template-columns: auto 1fr 72px 100px; gap: 10px; align-items: center; padding: 6px 0; }
.share-row input[type=checkbox] { width: 22px; height: 22px; min-height: 0; }
.share-row input[type=number] { padding: 8px; min-height: 40px; text-align: center; }
.quick { display: flex; gap: 8px; }
.quick input { flex: 1; }
.hint { font-size: 13px; color: var(--muted); margin-top: 6px; }
.error { color: var(--neg); font-size: 14px; margin-top: 8px; }
.monthnav { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.monthnav strong { text-transform: capitalize; }

.bars { display: grid; gap: 6px; }
.bar { display: grid; grid-template-columns: 84px 1fr 96px; gap: 8px; align-items: center; font-size: 14px; }
.bar .track { height: 10px; background: var(--line); border-radius: 99px; overflow: hidden; }
.bar .fill { height: 100%; background: var(--accent); border-radius: 99px; }

.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--card); border-top: 1px solid var(--line); padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); z-index: 10;
}
.tabs a { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 11px; color: var(--muted); text-decoration: none; padding: 4px 0; }
.tabs a span { font-size: 20px; filter: grayscale(1); opacity: .7; }
.tabs a.on { color: var(--accent); font-weight: 600; }
.tabs a.on span { filter: none; opacity: 1; }
@media (min-width: 700px) { .tabs { max-width: 640px; margin: 0 auto; border: 1px solid var(--line); border-bottom: 0; border-radius: 14px 14px 0 0; } }

#toast { position: fixed; left: 50%; bottom: calc(90px + env(safe-area-inset-bottom)); transform: translateX(-50%) translateY(20px); opacity: 0; background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 14px; transition: .2s; pointer-events: none; z-index: 40; max-width: calc(100vw - 32px); }
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast button { margin-left: 10px; background: none; border: 0; color: var(--accent); font: inherit; font-weight: 700; pointer-events: auto; cursor: pointer; }
code { font-size: 13px; background: var(--line); padding: 1px 5px; border-radius: 5px; }