:root {
  --bg: #f6f7f5;
  --surface: #ffffff;
  --text: #1d2420;
  --muted: #66706a;
  --border: #dfe3df;
  --accent: #1f6f5c;
  --accent-text: #ffffff;
  --accent-soft: #e3f0ec;
  --danger: #b3261e;
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614;
    --surface: #1b201d;
    --text: #e6ebe8;
    --muted: #97a29c;
    --border: #2d3531;
    --accent: #4fb39a;
    --accent-text: #0d1311;
    --accent-soft: #1e3530;
    --danger: #f2b8b5;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  -webkit-text-size-adjust: 100%;
}
h1 { font-size: 1.35rem; margin: 0 0 16px; }
h2 { font-size: 1.05rem; margin: 0 0 12px; }
h3 { font-size: .95rem; margin: 18px 0 8px; color: var(--muted); }
a { color: var(--accent); }
code { background: var(--accent-soft); padding: 1px 5px; border-radius: 4px; }

.boot { text-align: center; padding: 40vh 0; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.error { color: var(--danger); }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* layout */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: var(--surface); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 16px;
  padding: 0 16px; padding-top: env(safe-area-inset-top);
}
.brand { font-weight: 700; color: var(--accent); white-space: nowrap; }
.topbar nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.topbar nav::-webkit-scrollbar { display: none; }
.topbar nav a {
  padding: 14px 10px; text-decoration: none; color: var(--muted); white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.topbar nav a.active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
main { max-width: 960px; margin: 0 auto; padding: 20px 16px 48px; }
main.center { min-height: 100vh; display: grid; place-items: center; }

/* components */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; margin-bottom: 16px;
}
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; }
.card-head h2 { margin: 0; }
.login { max-width: 360px; text-align: center; }
.badge { display: inline-block; background: var(--accent-soft); color: var(--accent); border-radius: 99px; padding: 2px 10px; font-size: .8rem; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.tile span { display: block; color: var(--muted); font-size: .82rem; }
.tile b { font-size: 1.2rem; font-variant-numeric: tabular-nums; }
.tile.strong { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.tile.strong span { color: inherit; opacity: .85; }

.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }

.btn {
  font: inherit; cursor: pointer; text-decoration: none; display: inline-block;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 8px 14px; border-radius: 8px; min-height: 40px;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.danger { color: var(--danger); margin-left: auto; }
.btn:disabled { opacity: .5; cursor: default; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px 6px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { font-size: .8rem; color: var(--muted); font-weight: 600; }
tfoot td { border-bottom: none; font-weight: 600; }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--accent-soft); }
tr.inactive { opacity: .5; }

.form label { display: block; margin-bottom: 12px; font-size: .88rem; color: var(--muted); }
.form input, .form select, .form textarea {
  display: block; width: 100%; margin-top: 4px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; min-height: 40px;
}
.form label.check { display: flex; align-items: center; gap: 8px; color: var(--text); }
.form label.check input { width: auto; min-height: 0; margin: 0; }
.actions { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }

.snap-row { display: grid; grid-template-columns: 1fr 140px; gap: 8px; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--border); }
.snap-row:has(.fx) { grid-template-columns: 1fr 120px 90px; }
.snap-row input { margin: 0; text-align: right; }
.token { background: var(--bg); border: 1px dashed var(--border); padding: 10px; border-radius: 8px; word-break: break-all; white-space: pre-wrap; user-select: all; }

/* tabs */
.tabs { display: flex; gap: 4px; overflow-x: auto; margin-bottom: 16px; border-bottom: 1px solid var(--border); scrollbar-width: none; }
.tabs button {
  font: inherit; background: none; border: none; color: var(--muted); cursor: pointer;
  padding: 10px 12px; white-space: nowrap; border-bottom: 2px solid transparent; min-height: 40px;
}
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

.year-picker { display: flex; align-items: center; gap: 10px; }
.year-picker .btn { padding: 4px 12px; }

.tile > span + span { margin-top: 2px; }

.bar-row { display: grid; grid-template-columns: 110px 1fr 90px 56px; gap: 8px; align-items: center; padding: 4px 0; font-size: .9rem; }
.bar { background: var(--accent-soft); border-radius: 4px; height: 10px; overflow: hidden; }
.bar > div { background: var(--accent); height: 100%; border-radius: 4px; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.grid2 .span2 { grid-column: 1 / -1; }
.inline-form { border: 1px dashed var(--border); border-radius: 8px; padding: 12px; margin-bottom: 12px; }
.notice { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; background: var(--accent-soft); }

/* budget / transactions */
:root { --over: #b3261e; --warn: #c98a00; --income: #1f7a3d; }
@media (prefers-color-scheme: dark) { :root { --over: #f2b8b5; --warn: #f5c451; --income: #7fd99a; } }
.over { color: var(--over); }
.row-over td:first-child { color: var(--over); }
.small-bar { height: 4px; margin-top: 4px; max-width: 160px; }
.bar > div.over { background: var(--over); }
.bar > div.warn { background: var(--warn); }
td.income { color: var(--income); }
tr.pending { background: var(--accent-soft); }
.pending-actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 6px; }
.pending-actions select { font: inherit; min-height: 36px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); max-width: 200px; }
.pending-actions .btn { min-height: 36px; padding: 4px 12px; }
.pending-actions label.check { display: flex; gap: 4px; align-items: center; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 12px; }
.seg button { font: inherit; border: none; background: var(--surface); color: var(--muted); padding: 8px 16px; cursor: pointer; min-height: 40px; }
.seg button.active { background: var(--accent); color: var(--accent-text); }

@media (max-width: 520px) {
  .grid2 { grid-template-columns: 1fr; }
  .bar-row { grid-template-columns: 80px 1fr 80px; }
  .bar-row > :last-child { display: none; }
  .snap-row, .snap-row:has(.fx) { grid-template-columns: 1fr 1fr; }
  .snap-row > span { grid-column: 1 / -1; }
}