:root {
  --bg: #f5f3ee;
  --card: #fffdf9;
  --ink: #1d1f1c;
  --muted: #6b6f68;
  --faint: #a3a69e;
  --line: #dedad0;
  --go: #2f7d5b;
  --go-soft: #e2efe7;
  --warn: #a4471f;
  --serif: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141613;
    --card: #1c1f1b;
    --ink: #ecebe6;
    --muted: #a0a39b;
    --faint: #6c7068;
    --line: #333731;
    --go: #62c08f;
    --go-soft: #1f3529;
    --warn: #f08a5d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 var(--sans); }
main { max-width: 1040px; margin: 0 auto; padding: 24px 16px 64px; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; background: transparent; border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; }
button:hover { border-color: var(--faint); }
button.primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
button.link { border: 0; padding: 0; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
button.danger { color: var(--warn); }
input, select { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; width: 100%; }
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--go); outline-offset: 1px; }
h1, h2, h3 { font-weight: 500; margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* header */
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-bottom: 28px; }
.brand { display: flex; align-items: baseline; gap: 14px; margin-right: auto; }
.brand h1 button { border: 0; padding: 0; font: 500 26px/1.2 var(--serif); }
.overall { font: 500 26px/1 var(--serif); color: var(--go); }
.tabs { display: flex; gap: 4px; }
.tabs button { border-color: transparent; }
.tabs button.on { border-color: var(--line); background: var(--card); }
.file { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; font-size: 13px; width: 100%; color: var(--muted); }
.file .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); display: inline-block; margin-right: 6px; }
.file .dot.ok { background: var(--go); }

/* road */
.rail { position: relative; --inset: calc(50% / var(--n)); margin-bottom: 8px; }
.track { position: absolute; left: var(--inset); right: var(--inset); top: 13px; height: 2px; background: var(--line); }
.track .fill { position: absolute; left: 0; top: 0; height: 100%; width: calc(var(--pos) * 100%); background: var(--go); }
.track .here { position: absolute; top: 50%; left: calc(var(--pos) * 100%); width: 12px; height: 12px; margin: -6px 0 0 -6px; border-radius: 50%; background: var(--go); box-shadow: 0 0 0 5px var(--go-soft); }
.nodes { list-style: none; margin: 0; padding: 0; display: flex; position: relative; }
.nodes li { flex: 1; min-width: 0; display: flex; justify-content: center; }
.node { display: flex; flex-direction: column; align-items: center; gap: 6px; border: 0; padding: 4px 2px; border-radius: 10px; text-align: center; width: 100%; }
.node .pin { width: 20px; height: 20px; margin-top: 3px; border-radius: 50%; border: 2px solid var(--faint); background: var(--bg); display: grid; place-items: center; font-size: 12px; position: relative; z-index: 1; }
.node.done .pin { background: var(--go); border-color: var(--go); color: var(--bg); }
.node.current .pin { border-color: var(--ink); border-width: 3px; }
.node .nm { font-size: 13px; line-height: 1.25; overflow-wrap: anywhere; }
.node .pc { font-size: 12px; color: var(--muted); }
.node.done .pc { color: var(--go); }
.node.current .nm { font-weight: 600; }
.node.sel { background: var(--card); box-shadow: 0 0 0 1px var(--line); }
.node.start .pin { width: 12px; height: 12px; margin-top: 7px; background: var(--faint); border: 0; }
.node.end .pin { border: 0; background: transparent; width: 26px; height: 26px; margin-top: 0; color: var(--ink); }
.road-tools { display: flex; justify-content: flex-end; margin-bottom: 20px; }

/* panels */
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 20px; }
.panel-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin-bottom: 12px; }
.panel-head h2 { font: 500 22px/1.2 var(--serif); }
.panel-head .spacer { margin-left: auto; }
.bar { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--go); }
.reached { margin: 12px 0 0; color: var(--go); }
.cps { list-style: none; margin: 16px 0 12px; padding: 0; }
.cp { display: grid; grid-template-columns: 26px minmax(0, 1fr) auto auto auto; gap: 4px 12px; align-items: center; padding: 10px 0; border-top: 1px solid var(--line); }
.cp:first-child { border-top: 0; }
.cp .status { width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--faint); display: grid; place-items: center; font-size: 11px; padding: 0; }
.cp .status.full { background: var(--go); border-color: var(--go); color: var(--bg); }
.cp .name { border: 0; padding: 0; text-align: left; overflow-wrap: anywhere; }
.cp .name:hover { text-decoration: underline; text-underline-offset: 3px; }
.cp .val { color: var(--muted); font-size: 13px; text-align: right; }
.cp .share { color: var(--faint); font-size: 12px; min-width: 36px; text-align: right; }
.cp .act { font-size: 13px; padding: 4px 10px; }
.cp .minibar { grid-column: 2 / -1; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.cp .minibar i { display: block; height: 100%; background: var(--go); }
.empty { color: var(--muted); margin: 16px 0; }

/* list stops: savings pot + items that light up when affordable */
.pot { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin: 16px 0 4px; padding: 14px 16px; border-radius: 12px; background: var(--bg); }
.pot .k { font-size: 13px; color: var(--muted); }
.pot .v { font: 500 24px/1.2 var(--serif); }
.pot .small { flex: 1; min-width: 160px; }
.pot .lit { color: var(--go); }
.items { list-style: none; margin: 12px 0; padding: 0; display: grid; gap: 8px; }
.item { display: grid; grid-template-columns: 26px minmax(0, 1fr) auto auto auto; gap: 4px 12px; align-items: center; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; }
.item .status { width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--faint); display: grid; place-items: center; font-size: 11px; }
.item .status.full { background: var(--go); border-color: var(--go); color: var(--bg); }
.item .name { border: 0; padding: 0; text-align: left; overflow-wrap: anywhere; }
.item .name:hover { text-decoration: underline; text-underline-offset: 3px; }
.item .price { font-variant-numeric: tabular-nums; }
.item .val { color: var(--muted); font-size: 13px; text-align: right; }
.item .act { font-size: 13px; padding: 4px 12px; }
.item.afford { border-color: var(--go); background: var(--go-soft); }
.item.afford .val { color: var(--go); font-weight: 600; }
.item.afford .act { background: var(--go); border-color: var(--go); color: var(--bg); }
.item .buys { grid-column: 2 / -1; list-style: none; margin: 4px 0 0; padding: 6px 0 0; border-top: 1px dashed var(--line); font-size: 13px; color: var(--muted); display: grid; gap: 2px; }
.item.bought { opacity: .6; }
.item.bought .name { text-decoration: line-through; }

/* debt totals */
.debt-chip { font-size: 13px; padding: 3px 10px; border-radius: 999px; color: var(--warn); border-color: var(--warn); align-self: center; }
.debt-sum { display: flex; flex-wrap: wrap; gap: 8px 28px; margin: 14px 0 10px; padding: 12px 14px; border-radius: 10px; background: var(--bg); }
.debt-sum .k { display: block; font-size: 12px; color: var(--muted); }
.debt-sum .v { font: 500 18px/1.3 var(--serif); }
.debt-sum .v.left { color: var(--warn); }
.debt-sum p { width: 100%; margin: 0; }
/* contributions record, by month */
.record { display: grid; gap: 10px; max-height: 280px; overflow-y: auto; }
.month { border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; font-size: 13px; }
.month .mhead, .month .mrow { display: flex; justify-content: space-between; gap: 12px; }
.month .mhead { margin-bottom: 4px; }
.month .mrow { color: var(--muted); }
/* sign-in and 2FA */
.lock { max-width: 380px; margin: 12vh auto 0; }
.lock h1 { font: 500 30px/1.2 var(--serif); margin-bottom: 20px; }
.lock-form { display: grid; gap: 14px; }
.lock-form label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.lock-form .err { color: var(--warn); font-size: 13px; margin: 0; min-height: 1em; }
.lock-form .qr { background: #fff; padding: 8px; border-radius: 10px; justify-self: start; }
.lock-form code { word-break: break-all; }

/* a person's list of debts */
.loans { display: grid; gap: 4px; font-size: 14px; padding: 10px 12px; border-radius: 8px; background: var(--bg); }
.loans .lrow { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.loans .lrow .muted { font-size: 13px; }
dialog .row3 { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 10px; }
@media (max-width: 480px) { dialog .row3 { grid-template-columns: 1fr 1fr; } dialog .row3 label:first-child { grid-column: 1 / -1; } }

/* share links */
.share-box { display: grid; gap: 8px; padding: 12px; border: 1px dashed var(--line); border-radius: 10px; }
.share-box p { margin: 0; }
.inline-btns { display: flex; gap: 12px; align-items: center; }
.tag { font-size: 11px; padding: 1px 7px; border-radius: 999px; background: var(--go-soft); color: var(--go); vertical-align: 2px; }
.share-page { max-width: 560px; }
.share-page h1 { font: 500 30px/1.2 var(--serif); margin: 0 0 16px; }
.share-page .debt-sum .v { font-size: 22px; }
.share-page .bar { margin: 0 0 20px; }
.share-page .month { margin-bottom: 8px; }
.paylist li { grid-template-columns: minmax(0, 1fr) auto; }

/* hover (or tap / focus) tooltip from data-tip */
.tip { position: relative; cursor: default; }
.tip[data-tip=""]::after { display: none; }
.tip::after { content: attr(data-tip); position: absolute; left: 0; top: calc(100% + 6px); z-index: 5; width: max-content; max-width: 260px; padding: 6px 10px; border-radius: 8px; background: var(--ink); color: var(--bg); font: 400 12px/1.4 var(--sans); white-space: normal; opacity: 0; pointer-events: none; transition: opacity .12s; }
.tip:hover::after, .tip:focus::after, .tip:focus-within::after { opacity: 1; }

/* money */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 20px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.tile .k { font-size: 13px; color: var(--muted); }
.tile .v { font: 500 22px/1.3 var(--serif); }
.money-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 12px; }
.list { list-style: none; margin: 0; padding: 0; }
.list li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.list li:first-child { border-top: 0; }
.list .name { border: 0; padding: 0; text-align: left; }
.list .name:hover { text-decoration: underline; text-underline-offset: 3px; }
.list .act { font-size: 13px; padding: 3px 10px; margin-left: 8px; }
.list .minibar { grid-column: 1 / -1; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.list .minibar i { display: block; height: 100%; background: var(--go); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) 90px; gap: 8px 12px; align-items: center; max-width: 420px; }
.split input { text-align: right; }
.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0 20px; }
.hist li { grid-template-columns: 90px minmax(0, 1fr) auto auto; align-items: baseline; }

/* dialog */
dialog { border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: var(--ink); padding: 0; width: min(460px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(0, 0, 0, .35); }
dialog form { padding: 20px; display: grid; gap: 14px; }
dialog h3 { font: 500 20px/1.2 var(--serif); }
dialog label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
dialog label.check { display: flex; align-items: center; gap: 8px; color: var(--ink); font-size: 15px; }
dialog label.check input { width: auto; }
dialog .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
dialog .btns { display: flex; gap: 8px; justify-content: flex-end; margin-top: 4px; }
dialog .btns .left { margin-right: auto; }
dialog .err { color: var(--warn); font-size: 13px; min-height: 0; margin: 0; }
dialog .preview { font-size: 13px; color: var(--muted); background: var(--bg); border-radius: 8px; padding: 10px 12px; }
dialog .preview:empty { display: none; }
dialog .seg { display: flex; gap: 6px; }
dialog .seg label { flex: 1; display: flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; color: var(--ink); font-size: 14px; }
dialog .seg input { width: auto; }
[hidden] { display: none !important; }

/* phone: the road turns vertical */
@media (max-width: 640px) {
  .brand h1 button, .overall { font-size: 22px; }
  .track { left: 13px; right: auto; top: var(--inset); bottom: var(--inset); width: 2px; height: auto; }
  .track .fill { width: 100%; height: calc(var(--pos) * 100%); }
  .track .here { top: calc(var(--pos) * 100%); left: 50%; }
  .nodes { flex-direction: column; }
  .nodes li { flex: none; height: 52px; justify-content: flex-start; }
  .node { flex-direction: row; align-items: center; gap: 12px; padding: 0 10px 0 3px; text-align: left; }
  .node .pin { margin-top: 0; flex: none; }
  .node .pc { margin-left: auto; }
  .node.start .pin { margin: 0 4px; }
  .node.end .pin { margin-left: -3px; }
  .cp { grid-template-columns: 26px minmax(0, 1fr) auto; }
  .cp .share { display: none; }
  .cp .val { grid-column: 2; text-align: left; }
  .cp .act { grid-column: 3; grid-row: 1 / span 2; }
  .hist li { grid-template-columns: minmax(0, 1fr) auto; }
  .item { grid-template-columns: 26px minmax(0, 1fr) auto; }
  .item .val { grid-column: 2; text-align: left; }
  .item .price { grid-column: 3; grid-row: 1; }
  .item .act { grid-column: 3; grid-row: 2; }
}