:root {
  --bg: #f5f0e6;
  --surface: #fffdf8;
  --surface-2: #f0e9db;
  --ink: #1b2826;
  --muted: #6a736f;
  --line: #e4dccb;
  --primary: #0f5c55;
  --primary-ink: #ffffff;
  --primary-soft: #dcece8;
  --accent: #e39a2d;
  --accent-soft: #fbecd2;
  --good: #2c8150;
  --good-soft: #dff0e4;
  --bad: #b8452c;
  --bad-soft: #f8e1da;
  --hero-1: #0f5c55;
  --hero-2: #0b3f3b;
  --shadow: 0 1px 2px rgba(27, 40, 38, .06), 0 6px 20px rgba(27, 40, 38, .06);
  --radius: 18px;
  --font: ui-rounded, "SF Pro Rounded", "Nunito", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --num: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1514;
    --surface: #162120;
    --surface-2: #1d2a28;
    --ink: #e9efec;
    --muted: #93a19c;
    --line: #26332f;
    --primary: #5cc2b3;
    --primary-ink: #06221f;
    --primary-soft: #183632;
    --accent: #f0b456;
    --accent-soft: #3a2e19;
    --good: #6fcf94;
    --good-soft: #17301f;
    --bad: #ef8a70;
    --bad-soft: #3a1f19;
    --hero-1: #134f49;
    --hero-2: #0b2a27;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.45;
  min-height: 100vh;
  padding-bottom: calc(76px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
.num { font-family: var(--num); font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

/* ---------- Top bar & tab bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(10px + env(safe-area-inset-top)) 16px 10px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; font-size: 1.2rem; letter-spacing: -.02em; }
.brand b { color: var(--primary); }
.brand img { border-radius: 8px; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--surface); display: grid; place-items: center; cursor: pointer;
}
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: grid; grid-template-columns: repeat(3, 1fr);
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
}
.tabbar a, .tabbar button {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 6px 0; border: 0; background: none; text-decoration: none;
  font-size: .72rem; color: var(--muted); cursor: pointer;
}
.tabbar svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tabbar .active { color: var(--primary); }

main { max-width: 760px; margin: 0 auto; padding: 4px 16px 24px; outline: none; }
h1, h2, h3 { letter-spacing: -.02em; line-height: 1.2; }
h2.section { font-size: 1.05rem; margin: 26px 2px 10px; display: flex; justify-content: space-between; align-items: baseline; }
h2.section small { font-weight: 400; font-size: .8rem; color: var(--muted); }

/* ---------- Cards ---------- */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow);
}
.card + .card { margin-top: 12px; }

.hero {
  position: relative; overflow: hidden;
  border-radius: 24px; padding: 22px 20px 20px;
  color: #f4fbf9;
  background: radial-gradient(120% 140% at 100% 0%, #1b7a70 0%, transparent 55%), linear-gradient(160deg, var(--hero-1), var(--hero-2));
  box-shadow: var(--shadow);
}
.hero .label { font-size: .85rem; opacity: .8; }
.hero .amount { font-size: clamp(2rem, 9vw, 2.7rem); font-weight: 700; margin: 2px 0 6px; }
.hero .sub { font-size: .9rem; opacity: .9; }
.hero .sub b { color: #ffd38a; font-weight: 600; }
.hero .coins { position: absolute; right: -26px; top: -26px; width: 150px; height: 150px; opacity: .9; pointer-events: none; }
.hero-row { display: flex; gap: 18px; margin-top: 16px; flex-wrap: wrap; }
.hero-row div { min-width: 0; }
.hero-row .k { font-size: .75rem; opacity: .75; }
.hero-row .v { font-weight: 600; }

.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 12px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; min-width: 0; }
.stat .k { font-size: .78rem; color: var(--muted); }
.stat .v { font-size: 1.2rem; font-weight: 700; margin-top: 2px; overflow-wrap: anywhere; }
.stat .h { font-size: .75rem; color: var(--muted); margin-top: 2px; }
.stat.good .v { color: var(--good); }
.stat.accent .v { color: var(--accent); }
.stat.bad .v { color: var(--bad); }
@media (min-width: 620px) { .stats.three { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* ---------- This month ---------- */
.due-item { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-top: 1px dashed var(--line); }
.due-item:first-of-type { border-top: 0; padding-top: 4px; }
.due-item .meta { flex: 1; min-width: 0; }
.due-item .t { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.due-item .amt { font-weight: 700; text-align: right; }
.card-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.card-title h3 { margin: 0; font-size: 1rem; }

/* ---------- Chips & buttons ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .72rem; font-weight: 600; padding: 3px 8px; border-radius: 999px;
  background: var(--surface-2); color: var(--muted); white-space: nowrap;
}
.chip.auction { background: var(--primary-soft); color: var(--primary); }
.chip.owner { background: var(--surface-2); color: var(--ink); }
.chip.lucky { background: var(--accent-soft); color: var(--accent); }
.chip.me { background: var(--accent); color: #2a1a00; }
.chip.good { background: var(--good-soft); color: var(--good); }
.chip.bad { background: var(--bad-soft); color: var(--bad); }
.chip.est { background: transparent; border: 1px dashed var(--line); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 11px 16px; border-radius: 14px; border: 1px solid var(--line);
  background: var(--surface); cursor: pointer; font-weight: 600; text-decoration: none;
}
.btn.primary { background: var(--primary); color: var(--primary-ink); border-color: transparent; }
.btn.accent { background: var(--accent); color: #2a1a00; border-color: transparent; }
.btn.danger { color: var(--bad); }
.btn.sm { padding: 7px 12px; font-size: .85rem; border-radius: 11px; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-row .btn { flex: 1 1 140px; }

/* ---------- Chit cards ---------- */
.chit-card { display: block; text-decoration: none; }
.chit-card .top { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.chit-card h3 { margin: 0 0 2px; font-size: 1.05rem; }
.chit-card .pot { font-weight: 700; font-size: 1.1rem; white-space: nowrap; }
.dots { display: flex; gap: 4px; margin: 14px 0 10px; flex-wrap: wrap; }
.dot { flex: 1 0 14px; max-width: 36px; height: 10px; border-radius: 6px; background: var(--surface-2); position: relative; }
.dot.paid { background: var(--primary); }
.dot.unpaid { background: var(--bad); }
.dot.now { outline: 2px solid var(--accent); outline-offset: 1px; }
.dot.mine::after { content: ""; position: absolute; top: -9px; left: 50%; transform: translateX(-50%); width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.dot.mine.projected::after { background: transparent; border: 1.5px solid var(--accent); }
.chit-card .foot { display: flex; justify-content: space-between; gap: 8px; font-size: .85rem; color: var(--muted); flex-wrap: wrap; }

/* ---------- Detail ---------- */
.back { display: inline-flex; align-items: center; gap: 4px; text-decoration: none; color: var(--muted); font-size: .9rem; margin: 4px 0 10px; }
.detail-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.detail-head h1 { font-size: 1.5rem; margin: 0; }

.rounds { list-style: none; margin: 0; padding: 0; }
.round {
  display: grid; grid-template-columns: 52px 1fr auto; gap: 12px; align-items: center;
  padding: 12px 4px; border-top: 1px solid var(--line); cursor: pointer;
}
.round:first-child { border-top: 0; }
.round:hover { background: color-mix(in srgb, var(--surface-2) 50%, transparent); }
.round .when { text-align: center; line-height: 1.1; }
.round .when .m { font-weight: 700; }
.round .when .y { font-size: .72rem; color: var(--muted); }
.round .mid { min-width: 0; }
.round .line1 { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.round .line2 { font-size: .8rem; color: var(--muted); margin-top: 3px; }
.round .right { text-align: right; }
.round .pay { font-weight: 700; }
.round.future .pay { color: var(--muted); font-weight: 600; }
.round.current { background: color-mix(in srgb, var(--accent-soft) 55%, transparent); border-radius: 12px; }
.round.won { background: color-mix(in srgb, var(--accent-soft) 80%, transparent); border-radius: 12px; }
.meter { height: 4px; border-radius: 4px; background: var(--surface-2); margin-top: 6px; overflow: hidden; display: flex; width: 100%; min-width: 70px; }
.meter i { display: block; height: 100%; background: var(--primary); }
.meter b { display: block; height: 100%; background: var(--accent); }
.future .meter i { background: color-mix(in srgb, var(--primary) 35%, transparent); }

.whatif .row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.result { margin-top: 12px; padding: 12px 14px; border-radius: 14px; background: var(--surface-2); }
.result .big { font-size: 1.25rem; font-weight: 700; }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.compare > div { padding: 10px 12px; border-radius: 12px; border: 1px solid var(--line); min-width: 0; }
.compare .k { font-size: .75rem; color: var(--muted); }
.compare .v { font-weight: 700; overflow-wrap: anywhere; }

/* ---------- Forms / sheet ---------- */
.sheet {
  border: 0; padding: 0; margin: auto auto 0; width: 100%; max-width: 560px;
  max-height: 92vh; border-radius: 24px 24px 0 0;
  background: var(--surface); color: var(--ink);
  box-shadow: 0 -10px 40px rgba(0,0,0,.25);
}
@media (min-width: 620px) { .sheet { margin: auto; border-radius: 24px; } }
.sheet::backdrop { background: rgba(10, 20, 18, .45); backdrop-filter: blur(2px); }
.sheet[open] { animation: up .22s ease-out; }
@keyframes up { from { transform: translateY(30px); opacity: 0; } to { transform: none; opacity: 1; } }
.sheet form, .sheet .inner { padding: 18px 18px calc(18px + env(safe-area-inset-bottom)); }
.sheet h3 { margin: 0 0 2px; font-size: 1.2rem; }
.sheet .grab { width: 40px; height: 4px; border-radius: 4px; background: var(--line); margin: 0 auto 14px; }

.field { display: block; margin-top: 14px; }
.field > span { display: block; font-size: .8rem; font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.field input[type=text], .field input[type=number], .field input[type=month], .field input[type=date], .field textarea, .field select {
  width: 100%; padding: 11px 12px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--bg); outline: none; min-width: 0;
}
.field input:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.field input:disabled { opacity: .6; }
.field .hint { font-size: .75rem; color: var(--muted); margin-top: 5px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 10px; }

.seg { display: flex; gap: 4px; padding: 4px; border-radius: 14px; background: var(--surface-2); flex-wrap: wrap; }
.seg label { flex: 1 1 auto; text-align: center; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label span {
  display: block; padding: 8px 10px; border-radius: 10px; font-size: .85rem; font-weight: 600; cursor: pointer; color: var(--muted); white-space: nowrap;
}
.seg input:checked + span { background: var(--surface); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.seg input:focus-visible + span { outline: 2px solid var(--primary); }

.check { display: flex; gap: 10px; align-items: center; margin-top: 14px; cursor: pointer; }
.check input { width: 20px; height: 20px; accent-color: var(--primary); }

.calc {
  margin-top: 14px; padding: 12px 14px; border-radius: 14px; background: var(--primary-soft);
  display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; font-size: .9rem;
}
.calc b { text-align: right; }
.sheet-actions { display: flex; gap: 10px; margin-top: 20px; }
.sheet-actions .btn { flex: 1; }

/* ---------- Misc ---------- */
.banner {
  display: flex; gap: 12px; align-items: center; padding: 12px 14px; border-radius: 16px;
  background: var(--accent-soft); margin-top: 12px; font-size: .9rem;
}
.banner .btn { margin-left: auto; flex: none; }
.empty { text-align: center; padding: 40px 20px; }
.empty .art { width: 120px; margin: 0 auto 10px; }
.explain h4 { margin: 14px 0 4px; font-size: .95rem; }
.explain p { margin: 0; color: var(--muted); font-size: .9rem; }
.formula { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .82rem; background: var(--surface-2); padding: 8px 10px; border-radius: 10px; margin-top: 6px; overflow-x: auto; }
#toast {
  position: fixed; left: 50%; bottom: calc(86px + env(safe-area-inset-bottom)); transform: translate(-50%, 20px);
  background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 12px; font-size: .9rem;
  opacity: 0; pointer-events: none; transition: .2s; z-index: 50; max-width: calc(100% - 32px);
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }
.hidden { display: none !important; }