/* Envelope Ledger — styles. Colors are tokens; dark mode follows the system. */
:root{
  --bg:#eef0eb; --card:#fbfcf9; --ink:#1b211d; --muted:#626b64; --line:#d9ddd5; --track:#e3e6df;
  --accent:#1d5c4b; --accent-ink:#ffffff; --good:#2a8a5f; --warn:#c57d14; --bad:#c43d32; --carry:#2b6cb0;
  --f-display:"Songti SC","Noto Serif SC",Georgia,serif;
  --f-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --f-num:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#121614; --card:#1a1f1c; --ink:#e7ebe6; --muted:#97a19a; --line:#2b322e; --track:#252b27;
    --accent:#5fb89c; --accent-ink:#0e1a15; --good:#56c48f; --warn:#e8a442; --bad:#f06a5e; --carry:#6aa9e8; color-scheme:dark;
  }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 var(--f-body)}
[hidden]{display:none!important}
.wrap{max-width:1000px;margin:0 auto;padding:calc(20px + env(safe-area-inset-top,0px)) 16px calc(48px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:20px}
main{display:flex;flex-direction:column;gap:20px}
h1,h2{font-family:var(--f-display);margin:0;text-wrap:balance}
h1{font-size:24px}
h2{font-size:17px}
.sub{color:var(--muted);font-size:13px}
.num{font-family:var(--f-num);font-variant-numeric:tabular-nums}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;min-width:0}
.top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.hdr{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
@media (max-width:820px){.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}}
.stat .k{color:var(--muted);font-size:12px}
.stat .v{font:600 21px/1.3 var(--f-num);font-variant-numeric:tabular-nums;margin-top:2px}
.stat .n{color:var(--muted);font-size:12px}
.over{color:var(--bad)!important}
.monthbar{display:flex;align-items:center;gap:8px}
.monthbar h2{min-width:110px;text-align:center}
.banner{padding:10px 14px;border-radius:8px;background:var(--track);font-size:13px}
/* controls */
label.f{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);min-width:0}
input,select,button,.filebtn{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:7px;padding:7px 9px}
input:focus-visible,select:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:-1px}
button,.filebtn{cursor:pointer}
button:disabled{opacity:.5;cursor:not-allowed}
button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600;padding:8px 18px}
button.ghost,.filebtn{background:transparent}
.danger{color:var(--bad)!important;border-color:var(--bad)!important}
button.link{border:none;background:none;color:var(--accent);padding:4px 6px;font-size:13px}
.form{display:grid;grid-template-columns:130px minmax(140px,1fr) 160px;gap:10px 12px;align-items:end;margin-top:10px}
.form .note{grid-column:1 / 3}
@media (max-width:700px){.form{grid-template-columns:1fr 1fr}.form .note{grid-column:1 / 3}.form button{grid-column:1 / 3}}
/* envelopes */
.env{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}
.env .card{padding:12px 14px}
.env .t{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.env .name{font-weight:600;display:flex;align-items:center;gap:6px}
.dot{width:10px;height:10px;border-radius:3px;display:inline-block;flex:none;vertical-align:-1px}
.bar{height:7px;background:var(--track);border-radius:4px;overflow:hidden;margin:9px 0 6px}
.bar>i{display:block;height:100%;border-radius:4px}
.meta{display:flex;justify-content:space-between;gap:8px;font:12px var(--f-num);color:var(--muted)}
.tag{font-size:12px;padding:2px 9px;border-radius:999px;background:var(--track);white-space:nowrap}
.budget-edit{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin-top:12px}
details summary{cursor:pointer;color:var(--muted);font-size:13px}
.how{margin-top:8px;line-height:1.75}
/* tables */
.tbl{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:7px 6px;border-bottom:1px solid var(--line);font-size:13px}
th{color:var(--muted);font-weight:500;font-size:12px}
.r{text-align:right}
td.nm{white-space:nowrap}
td.m{font-family:var(--f-num);font-variant-numeric:tabular-nums;white-space:nowrap}
td.note{word-break:break-word}
.rowbtns{white-space:nowrap}
.list{max-height:480px;overflow:auto}
.empty{color:var(--muted);text-align:center;padding:28px 8px}
@media (max-width:560px){
  th,td{padding:7px 4px;font-size:12.5px}
  .list td.note{max-width:90px}
  .list td.m{font-size:12px}
}
/* water meter: green = low line, amber = quota, blue = carry-over, red = over the cap */
.meter{position:relative;height:30px;background:var(--track);border-radius:6px;overflow:hidden}
.meter>i{position:absolute;top:0;bottom:0;display:block;transition:left .35s,width .35s}
.meter .pool{background:repeating-linear-gradient(45deg,transparent 0 5px,color-mix(in srgb,var(--carry) 30%,transparent) 5px 10px)}
.meter .base{background:repeating-linear-gradient(45deg,transparent 0 5px,color-mix(in srgb,var(--warn) 30%,transparent) 5px 10px)}
.meter .tick{width:2px;background:var(--ink);opacity:.55}
.meter .guide{width:0;border-left:2px dashed var(--ink);opacity:.8}
.mflags{position:relative;height:22px;font-size:12px;line-height:18px;margin-top:10px}
.mflags>span{position:absolute;top:0;white-space:nowrap;font-weight:600}
.mflags>span::after{content:"";position:absolute;bottom:-4px;width:2px;height:6px;background:var(--ink);opacity:.6}
.mflags>span.l::after{left:0}
.mflags>span.r::after{right:0}
.mzones{position:relative;height:40px;margin-top:6px;font-size:12px;line-height:1.35;color:var(--muted)}
.mzones .zl{position:absolute;top:0;height:3px;border-radius:2px}
.mzones .zt{position:absolute;top:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding-right:4px}
.mzones b{color:var(--ink);font-weight:600}
.msg{font-weight:600;margin:6px 0 0}
.defs{display:flex;flex-direction:column;gap:9px;margin-top:12px;font-size:13px;line-height:1.5}
.defs>div{display:grid;grid-template-columns:16px minmax(0,1fr);gap:8px;align-items:start}
.defs .sw{width:16px;height:16px;border-radius:4px;margin-top:2px;border:1px solid var(--line);display:block}
.defs .sw.pool{background:repeating-linear-gradient(45deg,color-mix(in srgb,var(--carry) 65%,transparent) 0 3px,transparent 3px 6px);border-color:var(--carry)}
.defs .sw.base{background:repeating-linear-gradient(45deg,color-mix(in srgb,var(--warn) 65%,transparent) 0 3px,transparent 3px 6px);border-color:var(--warn)}
.defs .sw.guide{border:2px dashed var(--ink)}
.trend{width:100%;height:auto;display:block;margin-top:8px}
/* setup */
.setup-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-top:14px}
.hint{font-size:11px;color:var(--muted)}
.cats{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.cat-row{display:grid;grid-template-columns:40px minmax(0,1fr) 100px 64px 36px;gap:8px;align-items:center}
.cat-row input[type=color]{padding:2px;height:36px;width:40px}
.cat-row label{font-size:12px;color:var(--muted);display:flex;gap:4px;align-items:center}
@media (max-width:480px){
  .cat-row{grid-template-columns:36px minmax(0,1fr) 72px 36px;grid-template-areas:"c n b x" ". k k .";row-gap:4px}
  .cat-row>[data-k=color]{grid-area:c}.cat-row>[data-k=name]{grid-area:n}.cat-row>[data-k=budget]{grid-area:b}
  .cat-row>.need{grid-area:k}.cat-row>[data-rm]{grid-area:x}
}
.err{color:var(--bad);font-size:13px;min-height:1em}
/* editor + toast */
.scrim{position:fixed;inset:0;background:rgba(10,14,12,.45);display:flex;align-items:center;justify-content:center;padding:16px;z-index:10}
.editor{width:100%;max-width:420px;display:flex;flex-direction:column;gap:12px}
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:8px 14px;border-radius:8px;font-size:13px;opacity:0;transition:opacity .2s;pointer-events:none;display:flex;gap:10px;align-items:center;max-width:calc(100% - 32px)}
.toast.on{opacity:1;pointer-events:auto}
.toast button{background:none;border:none;color:var(--bg);text-decoration:underline;padding:0;font-size:13px}
footer{text-align:center}
@media (prefers-reduced-motion:reduce){.meter>i,.toast{transition:none}}
.top .row{flex-wrap:nowrap}
.toast button{white-space:nowrap}