:root{
  --bg:#E9EEF2; --surface:#FFFFFF; --sunk:#F3F6F8; --ink:#18222F; --muted:#5B6878; --line:#CDD6DF;
  --accent:#2F4BD8; --accent-ink:#FFFFFF; --owed:#17785A; --owe:#B8433A; --warn-bg:#FFF4D6; --warn-ink:#6B4A00;
  --display:"Bricolage Grotesque","Avenir Next",system-ui,sans-serif;
  --body:"Instrument Sans","Segoe UI",system-ui,-apple-system,sans-serif;
  color-scheme:light; box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#10161E; --surface:#18212C; --sunk:#131B24; --ink:#E6EBF0; --muted:#93A0AE; --line:#2A3644;
    --accent:#8EA2FF; --accent-ink:#0E1430; --owed:#4CC79A; --owe:#F07C70; --warn-bg:#3A2F12; --warn-ink:#F3D98A; color-scheme:dark; }
}
html{scroll-padding-top:env(safe-area-inset-top,0px);-webkit-text-size-adjust:100%}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.5 var(--body);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
button,input,select{font:inherit;color:inherit}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:720px;margin:0 auto;padding:16px 16px 56px}

.top{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.brand{font:800 24px/1 var(--display);letter-spacing:-.02em;margin:0;display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink)}
.brand svg{width:24px;height:24px}
.gname{font:800 26px/1.1 var(--display);letter-spacing:-.02em;margin:0;flex:1;min-width:0;overflow-wrap:anywhere}
.back{text-decoration:none;font-weight:600;font-size:15px}
.live{font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.live i{width:8px;height:8px;border-radius:50%;background:var(--muted)}
.live.on i{background:var(--owed)}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}

input[type=text],input[type=number],input[type=url],select{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 12px;min-width:0;width:100%;font-size:16px}
input::placeholder{color:var(--muted)}
label{display:flex;flex-direction:column;gap:5px;font-size:13px;color:var(--muted);font-weight:500}

.btn{border:0;border-radius:10px;padding:10px 15px;font-weight:600;cursor:pointer;background:var(--accent);color:var(--accent-ink);white-space:nowrap}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn.small{padding:7px 11px;font-size:14px}
.iconbtn{border:0;background:transparent;color:var(--muted);cursor:pointer;border-radius:8px;padding:6px 10px;font-size:20px;line-height:1}
.iconbtn:hover{color:var(--owe);background:var(--sunk)}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;margin-bottom:16px}
h2{font:700 19px/1.2 var(--display);margin:0 0 12px;letter-spacing:-.01em}
.hint{color:var(--muted);font-size:14px;margin:0}
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;gap:8px;align-items:flex-end}
.row > :first-child{flex:1}
.err{color:var(--owe);font-size:14px;min-height:1.2em;margin:0}
.note{background:var(--warn-bg);color:var(--warn-ink);border-radius:12px;padding:12px 14px;font-size:14px;margin-bottom:16px}
.note b{font-weight:600}

.tabs{display:flex;gap:4px;background:var(--sunk);border:1px solid var(--line);border-radius:12px;padding:4px;margin-bottom:16px;position:sticky;top:env(safe-area-inset-top,0px);z-index:5}
.tabs button{flex:1;border:0;background:transparent;border-radius:9px;padding:9px 6px;font-weight:600;cursor:pointer;color:var(--muted)}
.tabs button[aria-selected="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 0 var(--line)}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:7px;padding:4px 8px 4px 4px;border-radius:999px;background:var(--sunk);border:1px solid var(--line);font-weight:500}
.chip .x{border:0;background:none;color:var(--muted);cursor:pointer;padding:0 2px 0 4px;font-size:17px;line-height:1}
.chip small{color:var(--muted);font-size:12px}
.av{width:28px;height:28px;border-radius:50%;display:inline-grid;place-items:center;font:700 11px var(--display);color:#fff;flex:none}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid2 .full{grid-column:1/-1}
.splitwith{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.toggle{display:inline-flex;align-items:center;gap:7px;padding:4px 12px 4px 4px;border-radius:999px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-weight:500;font-size:15px}
.toggle[aria-pressed="false"]{opacity:.5}
.toggle[aria-pressed="false"] .av{filter:grayscale(1)}

.list{list-style:none;margin:0;padding:0}
.list > li{display:grid;grid-template-columns:44px 1fr auto auto;gap:10px;align-items:center;padding:11px 0;border-top:1px solid var(--line)}
.list > li:first-child{border-top:0}
.date{text-align:center;line-height:1.05;color:var(--muted);font-size:11px}
.date b{display:block;font:700 18px var(--display);color:var(--ink)}
.t{font-weight:600;overflow-wrap:anywhere}
.s{color:var(--muted);font-size:13px}
.amt{font:700 16px var(--display);font-variant-numeric:tabular-nums}
li.pay .t{color:var(--owed)}

.switch{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:14px;background:var(--sunk);margin-bottom:6px}
.switch strong{display:block;font-weight:600}
.sw{position:relative;width:48px;height:28px;border-radius:999px;border:0;background:var(--line);cursor:pointer;flex:none;transition:background .2s}
.sw::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .2s}
.sw[aria-checked="true"]{background:var(--accent)}
.sw[aria-checked="true"]::after{transform:translateX(20px)}
.map{width:100%;max-width:380px;display:block;margin:4px auto 0}
.map .edge{fill:none;stroke:var(--accent);stroke-linecap:round}
.map .lbl rect{fill:var(--surface);stroke:var(--line)}
.map .lbl text{fill:var(--ink);font:700 12px var(--display)}
.map .nm{fill:var(--ink);font:600 12px var(--body)}
.map .ini{fill:#fff;font:700 13px var(--display)}
.count{text-align:center;color:var(--muted);font-size:14px;margin:2px 0 12px}
.count b{color:var(--ink);font-family:var(--display)}
.transfers{list-style:none;margin:0 0 16px;padding:0;display:flex;flex-direction:column;gap:8px}
.transfers li{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;flex-wrap:wrap}
.transfers .who{flex:1;min-width:140px}
.bal{list-style:none;margin:0;padding:12px 0 0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.bal li{display:flex;align-items:center;gap:10px}
.bal .n{flex:1}
.pos{color:var(--owed)} .neg{color:var(--owe)} .zero{color:var(--muted)}

.chain{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:12px;margin-bottom:14px;font-size:14px;background:var(--sunk)}
.chain.ok{color:var(--owed)} .chain.badc{color:var(--owe);background:var(--warn-bg)}
.chain b{display:block;color:var(--ink)}
.log{list-style:none;margin:0;padding:0}
.log li{padding:10px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:auto 1fr;gap:4px 12px}
.log li:first-child{border-top:0}
.log .seq{font:700 13px var(--display);color:var(--muted);padding-top:2px;min-width:2.4em}
.log .h{grid-column:2;font-size:12px;color:var(--muted);overflow-wrap:anywhere}

.groups{list-style:none;margin:0;padding:0}
.groups a{display:flex;justify-content:space-between;align-items:center;padding:13px 2px;border-top:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:600}
.groups li:first-child a{border-top:0}
.groups span{color:var(--muted);font-weight:400;font-size:14px}
.hero{padding:28px 4px 8px}
.hero h1{font:800 38px/1.02 var(--display);letter-spacing:-.035em;margin:0 0 10px}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:11px 16px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s;max-width:90vw;z-index:20}
.toast.show{opacity:1}
@media (max-width:420px){ .grid2{grid-template-columns:1fr} .gname{font-size:22px} }
@media (prefers-reduced-motion:reduce){*{transition:none!important}}