:root {
  --bg: #f4f6f5;
  --surface: #ffffff;
  --surface-2: #f8faf9;
  --border: #e3e8e6;
  --text: #17201d;
  --muted: #64716c;
  --accent: #0f766e;
  --accent-soft: #e6f4f2;
  --good: #15803d;
  --good-soft: #e8f6ec;
  --warn: #b45309;
  --warn-soft: #fdf3e2;
  --bad: #b91c1c;
  --bad-soft: #fdecec;
  --bar: #0f766e;
  --bar-2: #c9d6d2;
  --shadow: 0 1px 2px rgba(16, 24, 20, .05), 0 1px 1px rgba(16, 24, 20, .03);
  --radius: 12px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1412;
    --surface: #151d1a;
    --surface-2: #1a2420;
    --border: #26322e;
    --text: #e6ece9;
    --muted: #93a29c;
    --accent: #2dd4bf;
    --accent-soft: #123430;
    --good: #4ade80;
    --good-soft: #13301f;
    --warn: #fbbf24;
    --warn-soft: #33270f;
    --bad: #f87171;
    --bad-soft: #3a1717;
    --bar: #2dd4bf;
    --bar-2: #34443f;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { margin: 0; line-height: 1.2; }
h1 { font-size: 17px; font-weight: 650; }
h2 { font-size: 15px; font-weight: 650; }
h3 { font-size: 17px; font-weight: 650; margin-bottom: 14px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- top bar */
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 16px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.logo { width: 26px; height: 26px; border-radius: 7px; background: var(--accent);
  mask: none; position: relative; }
.logo::after { content: ""; position: absolute; inset: 7px 6px 6px; background: var(--surface);
  clip-path: polygon(50% 0, 100% 45%, 100% 100%, 0 100%, 0 45%); }
.tabs { display: flex; gap: 2px; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 3px; }
.tab { border: 0; background: transparent; color: var(--muted); font: inherit; font-weight: 550;
  padding: 5px 12px; border-radius: 7px; cursor: pointer; }
.tab.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.month-controls { display: flex; gap: 6px; align-items: center; }
select, input {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; min-width: 0;
}
select:focus, input:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 0; border-color: var(--accent); }

/* ---------- buttons */
.btn { font: inherit; font-weight: 600; border-radius: 8px; padding: 7px 12px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); white-space: nowrap; }
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
@media (prefers-color-scheme: dark) { .btn.primary { color: #062a26; } }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--bad); }
.btn.icon { padding: 7px 10px; }
.btn:disabled { opacity: .55; cursor: progress; }

/* ---------- layout */
main { max-width: 1180px; margin: 0 auto; padding: 16px; }
.view[hidden] { display: none; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }
.side { display: grid; gap: 16px; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px 16px; margin-bottom: 16px; }
.side .panel, .layout > .panel { margin-bottom: 0; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 10px;
  margin-bottom: 10px; flex-wrap: wrap; }
.head-actions { display: flex; gap: 8px; align-items: center; }

/* ---------- summary cards */
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
@media (max-width: 900px) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 14px; box-shadow: var(--shadow); min-width: 0; }
.card .label { color: var(--muted); font-size: 12.5px; font-weight: 550; }
.card .value { font-size: 21px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere; }
.card .sub { color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.card.pos .value { color: var(--good); }
.card.neg .value { color: var(--bad); }
.progress { height: 6px; border-radius: 99px; background: var(--bar-2); overflow: hidden; margin-top: 8px; }
.progress > span { display: block; height: 100%; background: var(--good); border-radius: 99px; }
@media (max-width: 480px) { .card .value { font-size: 17px; } }

/* ---------- banners & warnings */
.banner { padding: 10px 14px; border-radius: 10px; margin-bottom: 14px; background: var(--bad-soft);
  color: var(--bad); border: 1px solid color-mix(in srgb, var(--bad) 30%, transparent); }
.warning { display: flex; gap: 8px; padding: 9px 12px; border-radius: 10px; margin-bottom: 10px;
  background: var(--warn-soft); color: var(--warn); font-size: 13.5px;
  border: 1px solid color-mix(in srgb, var(--warn) 25%, transparent); }

/* ---------- segmented filter */
.segmented { display: flex; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 2px; }
.segmented button { border: 0; background: transparent; font: inherit; font-size: 13px; font-weight: 550;
  color: var(--muted); padding: 4px 10px; border-radius: 6px; cursor: pointer; }
.segmented button.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

/* ---------- expense list */
.group { margin-top: 6px; }
.group + .group { margin-top: 14px; }
.group-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px;
  padding: 6px 2px; border-bottom: 1px solid var(--border); font-size: 12.5px; font-weight: 650;
  color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.group-head .num { text-transform: none; letter-spacing: 0; }
.row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 10px; align-items: center;
  padding: 9px 2px; border-bottom: 1px solid var(--border); cursor: pointer; }
.row:last-child { border-bottom: 0; }
.row:hover { background: var(--surface-2); }
.row .name { font-weight: 550; overflow-wrap: anywhere; }
.row .meta { color: var(--muted); font-size: 12.5px; display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.row .amount { font-weight: 650; font-variant-numeric: tabular-nums; text-align: right; }
.row.done .name { color: var(--muted); }
.row.done .amount { color: var(--muted); font-weight: 550; }
.badge { font-size: 11px; font-weight: 650; padding: 1px 6px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); }
.status { width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--border); background: transparent;
  display: grid; place-items: center; cursor: pointer; padding: 0; color: transparent; font-size: 14px; font-weight: 800; }
.status:hover { border-color: var(--good); }
.status.on { background: var(--good); border-color: var(--good); color: #fff; }
@media (prefers-color-scheme: dark) { .status.on { color: #062a14; } }
.empty { padding: 26px 8px; text-align: center; color: var(--muted); }

/* ---------- side lists */
.kv { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; padding: 7px 0;
  border-bottom: 1px solid var(--border); align-items: center; }
.kv:last-child { border-bottom: 0; }
.kv .k { overflow-wrap: anywhere; }
.kv .v { font-variant-numeric: tabular-nums; font-weight: 600; text-align: right; }
.kv.total { font-weight: 700; }
.kv.total .k { font-weight: 650; }
.editable { cursor: pointer; border-radius: 6px; padding: 1px 6px; margin: -1px -6px; border: 1px dashed transparent; background: none;
  font: inherit; color: inherit; font-weight: 600; font-variant-numeric: tabular-nums; }
.editable:hover { border-color: var(--accent); background: var(--accent-soft); }
.editable.blank { color: var(--muted); font-weight: 500; }
.vehicle { padding: 8px 0; border-bottom: 1px solid var(--border); }
.vehicle:last-of-type { border-bottom: 0; }
.vehicle .top { display: flex; justify-content: space-between; font-weight: 600; }
.vehicle .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 6px; font-size: 13px; }
.vehicle .grid div span { display: block; color: var(--muted); font-size: 11.5px; }
.linked { font-size: 12px; color: var(--muted); margin-top: 6px; }
.linked.no { color: var(--warn); }

/* ---------- overview */
.trend { display: grid; gap: 10px; }
.trend-row { display: grid; grid-template-columns: 120px minmax(0, 1fr) 140px; gap: 12px; align-items: center; }
@media (max-width: 640px) { .trend-row { grid-template-columns: 1fr; gap: 4px; } }
.trend-row .m { font-weight: 600; }
.bars { display: grid; gap: 3px; }
.bars .b { height: 10px; border-radius: 4px; }
.bars .inc { background: var(--bar-2); }
.bars .exp { background: var(--bar); }
.trend-row .r { text-align: right; font-variant-numeric: tabular-nums; font-size: 13px; }
@media (max-width: 640px) { .trend-row .r { text-align: left; } }
.legend { display: flex; gap: 14px; font-size: 12.5px; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.cat-row { display: grid; grid-template-columns: 210px minmax(0, 1fr) 130px; gap: 12px; align-items: center; padding: 6px 0; }
@media (max-width: 640px) { .cat-row { grid-template-columns: 1fr auto; } .cat-row .track { grid-column: 1 / -1; grid-row: 2; } }
.cat-row .track { height: 10px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.cat-row .track span { display: block; height: 100%; background: var(--bar); border-radius: 4px; }
.cat-row .v { text-align: right; font-variant-numeric: tabular-nums; font-size: 13px; }

/* ---------- dialogs */
dialog { border: 1px solid var(--border); border-radius: 14px; padding: 18px; width: min(440px, calc(100vw - 32px));
  background: var(--surface); color: var(--text); box-shadow: 0 20px 50px rgba(0,0,0,.25); }
dialog::backdrop { background: rgba(10, 16, 14, .45); }
dialog label { display: grid; gap: 5px; margin-bottom: 12px; font-size: 13px; font-weight: 600; color: var(--muted); }
dialog label input, dialog label select { color: var(--text); font-weight: 400; font-size: 15px; }
dialog label.check { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 500; }
.hint { font-weight: 400; color: var(--muted); font-size: 12px; }
.dialog-actions { display: flex; gap: 8px; align-items: center; margin-top: 6px; }
.spacer { flex: 1; }

/* ---------- toast & loading */
.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%) translateY(30px); opacity: 0;
  background: var(--text); color: var(--surface); padding: 9px 14px; border-radius: 10px; font-size: 14px;
  transition: .2s ease; pointer-events: none; max-width: calc(100vw - 32px); z-index: 20; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--bad); color: #fff; }
body.busy { cursor: progress; }
.skeleton { height: 14px; border-radius: 6px; background: var(--surface-2); margin: 12px 0; animation: pulse 1.2s infinite ease-in-out; }
@keyframes pulse { 50% { opacity: .5; } }

@media (max-width: 560px) {
  .topbar { gap: 8px; }
  .tabs { order: 3; width: 100%; }
  .tab { flex: 1; }
  .month-controls { order: 2; }
  .brand h1 { font-size: 16px; }
  .panel-head { align-items: flex-start; }
}