:root{
  --bg:#eef2f0;
  --surface:#ffffff;
  --surface-2:#e2e9e5;
  --ink:#16211f;
  --ink-soft:#4b5c58;
  --ink-faint:#8a9a95;
  --line:#d2dad6;
  --accent:#0f6b58;
  --accent-strong:#0b4f41;
  --accent-soft:#dceee7;
  --now:#b5651d;
  --now-soft:#f7e6d3;
  --danger:#a83c34;
  --danger-soft:#f4dedb;
  --shadow: 0 1px 2px rgba(15,40,32,0.06), 0 6px 20px rgba(15,40,32,0.05);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f1e1a;
    --surface:#15281f;
    --surface-2:#1c3428;
    --ink:#e9f3ef;
    --ink-soft:#9fbeb4;
    --ink-faint:#5f7c73;
    --line:#28453a;
    --accent:#4fd1a5;
    --accent-strong:#7ee2bc;
    --accent-soft:#1c4536;
    --now:#e8a15c;
    --now-soft:#3a2a18;
    --danger:#e2695c;
    --danger-soft:#3a2220;
    --shadow: 0 1px 2px rgba(0,0,0,0.25), 0 8px 24px rgba(0,0,0,0.28);
  }
}

*{ box-sizing:border-box; }
html,body{ margin:0; }
body{
  background:var(--bg);
  color:var(--ink);
  font-family:"IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  font-size:14px;
  line-height:1.5;
  padding:28px 20px 64px;
}
h1,h2,h3{ font-family:"Fraunces", Georgia, serif; font-weight:600; text-wrap:balance; margin:0; }
.num, .amount, input[type="number"], input[type="month"]{
  font-family:"IBM Plex Mono", ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
}
.wrap{ max-width:1080px; margin:0 auto; display:flex; flex-direction:column; gap:28px; }

header{ display:flex; flex-direction:column; gap:4px; border-bottom:1px solid var(--line); padding-bottom:18px; }
.eyebrow{ font-size:11px; letter-spacing:0.09em; text-transform:uppercase; color:var(--accent); font-weight:600; }
header h1{ font-size:30px; color:var(--ink); }
header p{ margin:2px 0 0; color:var(--ink-soft); max-width:60ch; }

.stats{ display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden; }
.stat{ background:var(--surface); padding:16px 18px; display:flex; flex-direction:column; gap:6px; }
.stat .label{ font-size:11px; letter-spacing:0.06em; text-transform:uppercase; color:var(--ink-faint); font-weight:600; }
.stat .value{ font-size:24px; font-weight:600; color:var(--ink); }
.stat.accent .value{ color:var(--accent-strong); }
.stat .sub{ font-size:12px; color:var(--ink-soft); }

.card{ background:var(--surface); border:1px solid var(--line); border-radius:12px; box-shadow:var(--shadow); }
.card-body{ padding:20px 22px; }
.card h2{ font-size:18px; margin-bottom:2px; }
.card .hint{ color:var(--ink-soft); font-size:12.5px; margin:2px 0 16px; }

form{ display:grid; grid-template-columns: 1fr 1fr 1.4fr 1fr 1fr 1fr auto; gap:14px; align-items:end; }
@media (max-width:760px){ form{ grid-template-columns: 1fr 1fr; } }
.field{ display:flex; flex-direction:column; gap:6px; }
.field label{ font-size:12px; font-weight:600; color:var(--ink-soft); }
.field input{
  font-size:14px; padding:9px 10px; border-radius:7px; border:1px solid var(--line);
  background:var(--bg); color:var(--ink); font-family:"IBM Plex Sans", sans-serif;
}
.field input[type="number"], .field input[type="month"]{ font-family:"IBM Plex Mono", monospace; }
.field input:focus{ outline:2px solid var(--accent); outline-offset:1px; border-color:var(--accent); }
button{ font:inherit; cursor:pointer; }
.btn-primary{
  background:var(--accent); color:#fff; border:none; border-radius:7px; padding:10px 18px;
  font-weight:600; white-space:nowrap; box-shadow:var(--shadow);
}
.btn-primary:hover{ background:var(--accent-strong); }
.btn-primary:focus-visible{ outline:2px solid var(--accent-strong); outline-offset:2px; }
.btn-primary:disabled{ opacity:0.6; cursor:default; }
.form-error{ grid-column:1/-1; color:var(--danger); font-size:12.5px; }

.filter-bar{
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  background:var(--accent-soft); border:1px solid var(--accent); border-radius:10px;
  padding:10px 16px;
}
.filter-bar label{ font-size:12px; font-weight:600; color:var(--accent-strong); letter-spacing:0.02em; }
.filter-select{
  font-family:"IBM Plex Sans", sans-serif; font-size:13.5px; padding:7px 10px; border-radius:7px;
  border:1px solid var(--accent); background:var(--surface); color:var(--ink); font-weight:500;
}
.filter-select:focus{ outline:2px solid var(--accent); outline-offset:1px; }
.filter-note{ font-size:12.5px; color:var(--accent-strong); margin-left:auto; }
.proyecto-tag{ color:var(--accent-strong); font-weight:600; }

.ledger-head{ display:flex; align-items:baseline; justify-content:space-between; gap:12px; flex-wrap:wrap; }
.ledger-head h2{ font-size:18px; }
.ledger-head .hint{ color:var(--ink-soft); font-size:12.5px; }
.ledger{ display:flex; gap:0; overflow-x:auto; border:1px solid var(--line); border-radius:12px; background:var(--surface); box-shadow:var(--shadow); }
.month-col{ min-width:190px; flex:1 0 190px; padding:16px 16px 14px; border-right:1px solid var(--line); display:flex; flex-direction:column; gap:10px; }
.month-col:last-child{ border-right:none; }
.month-col.is-now{ background:var(--now-soft); }
.month-col.is-past{ opacity:0.55; }
.month-label{ display:flex; align-items:center; gap:8px; }
.month-label .m{ font-family:"Fraunces", serif; font-weight:600; font-size:15px; }
.now-badge{ font-size:10px; letter-spacing:0.05em; text-transform:uppercase; background:var(--now); color:#fff; padding:2px 6px; border-radius:99px; font-weight:600; }
.month-total{ font-size:19px; font-weight:600; }
.month-items{ display:flex; flex-direction:column; gap:6px; border-top:1px dashed var(--line); padding-top:8px; }
.month-item{ display:flex; justify-content:space-between; gap:8px; font-size:12px; color:var(--ink-soft); }
.month-item .d{ overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.month-item .a{ flex:none; color:var(--ink); }
.ledger-empty{ padding:28px 20px; color:var(--ink-soft); font-size:13px; }

.table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:12px; background:var(--surface); box-shadow:var(--shadow); }
table{ width:100%; border-collapse:collapse; min-width:640px; }
thead th{ text-align:left; font-size:11px; letter-spacing:0.05em; text-transform:uppercase; color:var(--ink-faint); font-weight:600; padding:12px 14px; border-bottom:1px solid var(--line); }
tbody td{ padding:11px 14px; border-bottom:1px solid var(--line); font-size:13px; }
tbody tr:last-child td{ border-bottom:none; }
td.num, th.num{ text-align:right; }
.desc-cell{ display:flex; flex-direction:column; }
.desc-cell .d{ font-weight:500; }
.del-btn{ background:none; border:1px solid var(--line); color:var(--danger); border-radius:6px; padding:5px 10px; font-size:12px; font-weight:600; }
.del-btn:hover{ background:var(--danger-soft); border-color:var(--danger); }
.empty-row td{ text-align:center; color:var(--ink-soft); padding:24px; }
.muted{ color:var(--ink-faint); }

footer{ text-align:center; color:var(--ink-faint); font-size:11.5px; padding-top:8px; }