:root {
  --bg: #f6f5f2; --card: #ffffff; --text: #1d1d1b; --muted: #6f6c66; --line: #e3e0da;
  --accent: #2f6f5e; --accent-text: #ffffff; --danger: #b3261e; --note: #fff4d6;
  --lunch: #e7f1ec; --shop: #e8eef8; --other: #efedea; --paperless: #f6e9f2;
  --series-1: #2f6f5e; --series-2: #c46a2b; --series-3: #4a68b0; --series-4: #a3842a; --series-5: #8a4f8f; --series-6: #3f8fa0;
  --up: #b3261e; --down: #2f6f5e;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161716; --card: #202221; --text: #ecebe8; --muted: #a09d97; --line: #343634;
    --accent: #5fb39b; --accent-text: #0f1a16; --danger: #f2827a; --note: #3a3320;
    --lunch: #22352d; --shop: #232d3c; --other: #2c2c2a; --paperless: #3a2834;
    --series-1: #5fb39b; --series-2: #e0925a; --series-3: #7f9be0; --series-4: #d0b25a; --series-5: #c08ac4; --series-6: #6cc0d0;
    --up: #f2827a; --down: #5fb39b;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
       font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 960px; margin: 0 auto; padding: 16px; }
a { color: var(--accent); }
h1 { font-size: 1.4rem; margin: 0 0 12px; }
h2 { font-size: 1.1rem; margin: 20px 0 8px; }
.muted { color: var(--muted); }
.center { text-align: center; margin-top: 40px; }

nav.top { display: flex; gap: 16px; align-items: center; padding: 10px 16px; background: var(--card);
          border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; }
nav.top .brand { font-weight: 700; text-decoration: none; color: var(--text); margin-right: auto; }
form.inline { display: inline; }

.btn { display: inline-block; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line);
       background: var(--card); color: var(--text); font: inherit; text-decoration: none; cursor: pointer; }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
button.link { background: none; border: 0; color: var(--accent); font: inherit; cursor: pointer; padding: 0; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
.card.narrow { max-width: 360px; margin: 60px auto; }
.note { background: var(--note); padding: 8px 12px; border-radius: 8px; margin: 0 0 8px; }
.error { color: var(--danger); }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 16px; }
.danger-zone { margin-top: 24px; }

label { display: flex; flex-direction: column; gap: 4px; font-size: .9rem; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); margin: 8px 0; }
input, select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
                border-radius: 8px; padding: 8px 10px; width: 100%; min-width: 0; }
input[type=checkbox] { width: auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.grid .wide { grid-column: 1 / -1; }
details { margin: 12px 0; }
.photo-pick input { padding: 12px; }

.summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.summary div { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.summary span { display: block; font-size: .85rem; }
.summary strong { font-size: 1.2rem; }

.filters { display: flex; gap: 8px; margin-bottom: 12px; align-items: end; flex-wrap: wrap; }
.filters input[type=search] { flex: 1; }
.filters select { width: auto; }
.filters label { flex-direction: row; align-items: center; }

.receipts { list-style: none; padding: 0; margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.receipts li + li { border-top: 1px solid var(--line); }
.receipts a { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; padding: 10px 14px;
              text-decoration: none; color: var(--text); align-items: baseline; }
.receipts .date { color: var(--muted); font-variant-numeric: tabular-nums; font-size: .9rem; }
.receipts .sum { font-variant-numeric: tabular-nums; font-weight: 600; }
.tag { font-size: .75rem; padding: 1px 6px; border-radius: 6px; background: var(--other); color: var(--text); margin-left: 4px; }
.tag.lunch { background: var(--lunch); } .tag.shop { background: var(--shop); } .tag.paperless { background: var(--paperless); }

table { width: 100%; border-collapse: collapse; }
table.items input { padding: 6px; }
table.items th, table.data th { text-align: left; font-weight: 500; color: var(--muted); font-size: .85rem; padding: 4px; }
table.items td { padding: 2px; }
table.items td:nth-child(1) { width: 34%; }
table.items td:nth-child(2) { width: 22%; }
table.items select { padding: 6px; }
table.data td { padding: 6px 4px; border-top: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 8px; margin: 8px 0 12px; }
.thumb { position: relative; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--bg); }
.thumb img { display: block; width: 100%; height: 128px; object-fit: cover; }
.thumb span { position: absolute; top: 4px; left: 4px; background: var(--card); border-radius: 6px; padding: 0 6px; font-size: .8rem; }
.thumb > button { position: absolute; top: 2px; right: 6px; font-size: 1.1rem; }
.thumb .drop { flex-direction: row; gap: 4px; align-items: center; padding: 4px 6px; font-size: .8rem; }
.pick { margin-top: 0; }
label.btn input[type=file] { display: none; }
.photo { max-width: 100%; max-height: 480px; border-radius: 8px; border: 1px solid var(--line); margin-top: 16px; }

table.data select { padding: 4px 6px; }
table.data tr.group-top td { font-weight: 600; }
table.data td.sub { padding-left: 16px; color: var(--muted); }
table.data td.up { color: var(--up); } table.data td.down { color: var(--down); }
.tree { display: grid; gap: 12px; }
.tree-top input.top { font-weight: 600; }
.tree-children { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 6px; margin: 6px 0 0 16px; align-items: start; }
.tree-node { display: grid; gap: 4px; }
.tree-node input.mid { font-weight: 600; }
.tree-node input.leaf3 { margin-left: 14px; width: calc(100% - 14px); font-size: .9rem; padding: 6px 8px; }
.tabs { display: flex; gap: 4px; margin-bottom: 8px; }
.tab { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 8px; padding: 4px 10px; font: inherit; cursor: pointer; }
.tab.active { color: var(--accent-text); background: var(--accent); border-color: var(--accent); }
.chart { position: relative; height: 260px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.btn { white-space: nowrap; }
@media (max-width: 640px) {
  nav.top { gap: 6px 14px; flex-wrap: wrap; }
  .summary strong { font-size: 1rem; }
  .two { grid-template-columns: 1fr; }
  table.items thead { display: none; }
  table.items tr { display: grid; grid-template-columns: 1fr 1fr 1fr 48px 32px; gap: 4px; padding: 6px 0; border-top: 1px solid var(--line); }
  table.items td:nth-child(1), table.items td:nth-child(2) { grid-column: 1 / -1; width: auto; }
}