:root{--bg:#f6f4ef;--card:#fff;--ink:#1d2421;--muted:#6b726f;--brand:#0f5c4d;--brand2:#e8f1ee;--due:#b3261e;--ok:#1d6b3a;--warn:#8a5a00;--line:#e3e0d8}
@media (prefers-color-scheme:dark){:root{--bg:#121614;--card:#1b201e;--ink:#e8ece9;--muted:#9aa39f;--brand:#5fbfa6;--brand2:#22302b;--due:#ff8a80;--ok:#7fd49b;--warn:#f0c060;--line:#2c3330}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:760px;margin:0 auto;padding:12px 16px 40px}
.top{background:var(--brand);color:#fff;padding:10px 16px;display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center}
.top a{color:#fff;text-decoration:none}.brand{font-weight:700;margin-right:auto}
.top nav{display:flex;gap:14px;flex-wrap:wrap}
h1{font-size:1.4rem;margin:12px 0}h2{font-size:1.1rem;margin:0 0 10px}h3{font-size:1rem;margin:16px 0 6px}
a{color:var(--brand)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin:12px 0}
table{width:100%;border-collapse:collapse}td,th{padding:6px 4px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:.85rem;color:var(--muted);font-weight:600}.num{text-align:right;white-space:nowrap}
tr.sum td{font-weight:700}
label{display:block;margin:8px 0;font-size:.9rem;color:var(--muted)}
input,select{display:block;width:100%;margin-top:4px;padding:10px;font-size:1rem;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}
input[type=checkbox]{display:inline;width:auto}
label.check{color:var(--ink)}
.bigin{font-size:1.6rem;letter-spacing:.05em}
button,.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:10px 16px;font-size:1rem;text-decoration:none;cursor:pointer}
.btn.light{background:var(--brand2);color:var(--brand)}
button.link{background:none;color:var(--muted);padding:4px;text-decoration:underline}
.big{display:block;text-align:center;background:var(--brand);color:#fff;padding:16px;border-radius:12px;font-size:1.15rem;font-weight:600;text-decoration:none;margin:12px 0;width:100%;border:0}
.file{display:block;text-align:center;background:var(--brand);color:#fff;padding:18px;border-radius:12px;font-size:1.1rem;font-weight:600;cursor:pointer}
.file.light{background:var(--brand2);color:var(--brand);padding:12px;font-weight:500}
.file input{display:none}
.flash{padding:10px 12px;border-radius:8px;margin:10px 0}
.flash.ok{background:#e3f4e8;color:var(--ok)}.flash.err{background:#fdecea;color:var(--due)}.flash.warn{background:#fff4dc;color:var(--warn)}
@media (prefers-color-scheme:dark){.flash.ok{background:#1f3326}.flash.err{background:#3a2120}.flash.warn{background:#3a3020}}
.muted{color:var(--muted);font-size:.9rem}
.due{color:var(--due)}.okc{color:var(--ok)}.late{color:var(--due)}
.unsure input{border-color:var(--warn);background:#fff8e6}.unsure em{color:var(--warn);font-style:normal}
@media (prefers-color-scheme:dark){.unsure input{background:#2e2716}}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}@media (max-width:360px){.grid2{grid-template-columns:1fr}}.grid3{display:grid;grid-template-columns:1.2fr 1.2fr 1fr;gap:0 8px}
@media (max-width:420px){.grid3{grid-template-columns:1fr}}
.thumb{max-width:100%;max-height:280px;border-radius:8px;display:block;margin:0 auto 8px}
.line{border-top:1px solid var(--line);padding:10px 0;display:grid;grid-template-columns:1fr auto;gap:4px 12px}
.line .who{grid-column:1/3}.line .how{font-size:.9rem;color:var(--muted)}.line .amount{font-weight:700;align-self:end;white-space:nowrap}
.line .share{grid-column:1/3;display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:.75rem;background:var(--brand2);color:var(--brand);padding:2px 8px;border-radius:99px;vertical-align:middle}.tag.ok{background:#e3f4e8;color:var(--ok)}
.rline{border-top:1px dashed var(--line);padding-top:6px}
.bigtext{font-size:1.25rem}
details{border-top:1px solid var(--line);padding:8px 0}summary{cursor:pointer}
form.inline{padding:6px 0}
footer{text-align:center;color:var(--muted);font-size:.85rem;padding:20px}footer a{color:var(--muted)}footer a.on{font-weight:700;color:var(--ink)}
.meterrow{display:flex;justify-content:space-between;align-items:center;gap:12px}
form.logout{display:inline}form.logout button{font-size:.85rem;padding:0}
footer a,footer button{display:inline-block;padding:8px 6px}