:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6b6b70;
  --border: #e2e2de;
  --accent: #4b46c8;
  --accent-text: #ffffff;
  --accent-soft: #ecebfb;
  --negative: #b3261e;
  --positive: #1d7a3a;
  --warn: #9a5b00;
  --warn-soft: #fff4e0;
  --error-soft: #fdecea;
  --row-hover: #f2f2ef;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161618;
    --surface: #1e1e21;
    --text: #e8e8ea;
    --muted: #9a9aa2;
    --border: #333338;
    --accent: #8f8cf0;
    --accent-text: #111114;
    --accent-soft: #2a2950;
    --negative: #f2867d;
    --positive: #6fcf8e;
    --warn: #f0b45a;
    --warn-soft: #3a2c14;
    --error-soft: #3d1c1a;
    --row-hover: #26262a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
button, input, select { font: inherit; color: inherit; }

.top {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 2;
}
.brand { font-weight: 700; font-size: 16px; color: var(--text); text-decoration: none; }
#nav { display: flex; gap: 2px; flex-wrap: wrap; flex: 1; }
#nav a {
  padding: 5px 10px;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}
#nav a:hover { color: var(--text); background: var(--row-hover); }
#nav a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
#nav kbd { font-family: var(--mono); font-size: 11px; opacity: .6; margin-right: 4px; }
.actions { display: flex; gap: 8px; }

button {
  padding: 5px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--muted); }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger { color: var(--negative); }
button.link { border: none; background: none; padding: 0 4px; color: var(--accent); }

#banners { padding: 0 16px; }
.banner {
  margin-top: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  white-space: pre-wrap;
}
.banner.info { background: var(--accent-soft); }
.banner.warn { background: var(--warn-soft); color: var(--warn); }
.banner.error { background: var(--error-soft); color: var(--negative); }
.banner button { flex: none; }

main { padding: 16px; max-width: 1400px; }
h2 { font-size: 16px; margin: 0 0 12px; font-weight: 600; }
h2 .sub { color: var(--muted); font-weight: 400; }

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar input[type=search] { min-width: 220px; }
input[type=text], input[type=search], select {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
label.check { display: inline-flex; gap: 6px; align-items: center; cursor: pointer; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: auto;
}
table { border-collapse: collapse; width: 100%; }
th, td { padding: 5px 10px; text-align: left; white-space: nowrap; }
th {
  position: sticky;
  top: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  z-index: 1;
}
tbody tr:hover { background: var(--row-hover); }
tbody tr.clickable { cursor: pointer; }
td.num, th.num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
td.desc { white-space: normal; min-width: 240px; }
td.mark { width: 1em; text-align: center; padding-right: 0; }
.neg { color: var(--negative); }
.muted { color: var(--muted); }
.warn { color: var(--warn); }
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--accent); }
tr.total td { font-weight: 600; border-top: 1px solid var(--border); }
tr.excluded td { color: var(--muted); }
tr.excluded.first td { border-top: 1px dashed var(--border); }
td.actions { text-align: right; }
tr.legs > td { padding: 0 10px 10px 36px; background: var(--bg); }
tr.legs:hover { background: none; }
table.sub th { background: var(--bg); font-weight: 500; color: var(--muted); }
td.actions button { padding: 1px 8px; font-size: 12px; }

.empty { padding: 32px 16px; color: var(--muted); white-space: pre-line; text-align: center; }
.more { padding: 10px; text-align: center; }

.report { display: grid; grid-template-columns: 220px 1fr; gap: 12px; align-items: start; }
.periods { padding: 6px; }
.periods button {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  padding: 4px 8px;
  border-radius: 5px;
  color: var(--muted);
}
.periods button:hover { background: var(--row-hover); color: var(--text); }
.periods button.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.periods .head { font-weight: 600; padding: 4px 8px; }

.builder { display: grid; grid-template-columns: 320px 1fr; gap: 16px; align-items: start; }
.form { padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.field label { display: block; font-weight: 600; margin-bottom: 3px; }
.field input { width: 100%; font-family: var(--mono); }
.field .hint { color: var(--muted); font-size: 12px; margin-top: 2px; }
.form .summary { font-weight: 600; white-space: pre-line; }
.form .buttons { display: flex; gap: 8px; }
.kept { font-size: 12px; color: var(--muted); font-family: var(--mono); }
.preview { max-height: calc(100vh - 170px); }

h3.section { font-size: 14px; font-weight: 600; margin: 20px 0 8px; }
h3.section .sub { color: var(--muted); font-weight: 400; }
.files a { color: var(--accent); text-decoration: none; }
.files a:hover { text-decoration: underline; }

.upload { margin-top: 16px; padding: 14px; overflow: visible; }
.upload h3 { font-size: 14px; margin: 0 0 10px; }
.upload .toolbar { margin-bottom: 10px; }
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 22px 16px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
}
.dropzone:hover, .dropzone:focus, .dropzone.over {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}
.upload .chosen { margin-top: 8px; font-family: var(--mono); font-size: 12px; overflow-wrap: anywhere; }
.upload .hint { margin-top: 8px; font-size: 12px; }

.import-files { margin-top: 6px; font-size: 13px; }
.import-files li { font-family: var(--mono); }

@media (max-width: 760px) {
  .report, .builder { grid-template-columns: 1fr; }
  .periods { display: flex; flex-wrap: wrap; gap: 2px; }
  .periods button { width: auto; }
  .periods .head { width: 100%; }
  .toolbar input[type=search] { min-width: 0; flex: 1; }
  .preview { max-height: none; }
}