:root {
  --bg: #ffffff;
  --panel: #f7f8fa;
  --panel-2: #eef0f4;
  --border: #d0d7de;
  --text: #1f2328;
  --muted: #57606a;
  --accent: #0969da;
  --accent-dim: #ddf4ff;
  --good: #1a7f37;
  --warn: #9a6700;
  --bad: #cf222e;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif; }

header { padding: 24px 32px; border-bottom: 1px solid var(--border); }
header h1 { margin: 0 0 4px; font-size: 20px; font-weight: 600; }
header p { margin: 0; }
.muted { color: var(--muted); font-size: 13px; }

nav.steps { padding: 16px 32px; border-bottom: 1px solid var(--border); background: var(--panel); }
nav.steps ol { list-style: none; padding: 0; margin: 0; display: flex; gap: 8px; }
nav.steps li {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 6px; background: var(--panel-2);
  border: 1px solid var(--border); color: var(--muted); font-size: 13px;
}
nav.steps li span {
  display: inline-flex; width: 22px; height: 22px; border-radius: 50%;
  background: var(--border); color: var(--text); align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
}
nav.steps li.active { border-color: var(--accent); color: var(--text); background: var(--accent-dim); }
nav.steps li.active span { background: var(--accent); color: #ffffff; }
nav.steps li.done span { background: var(--good); color: #ffffff; }

main { padding: 24px 32px; max-width: 1200px; }
section.step { display: none; }
section.step.active { display: block; }
section.step h2 { margin: 0 0 6px; font-size: 17px; font-weight: 600; }
section.step h3 { margin: 18px 0 6px; font-size: 14px; font-weight: 600; color: var(--accent); }
.mt { margin-top: 24px; }
.hidden { display: none !important; }

form#upload-form { margin: 14px 0; display: flex; gap: 8px; align-items: center; }
input[type="file"] {
  padding: 8px; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; flex: 1 1 auto;
}
input[type="number"] {
  width: 100px; padding: 6px 8px; background: var(--panel-2);
  border: 1px solid var(--border); color: var(--text); border-radius: 6px;
}
label.inline { display: inline-flex; gap: 6px; align-items: center; }
button, .btn-link {
  padding: 8px 14px; background: var(--accent-dim);
  border: 1px solid var(--accent); color: var(--accent);
  border-radius: 6px; cursor: pointer; font-size: 13px; text-decoration: none;
  display: inline-block;
}
button:hover, .btn-link:hover { background: var(--accent); color: #ffffff; }
button:disabled { background: var(--panel-2); border-color: var(--border); color: var(--muted); cursor: not-allowed; }

.result { margin: 12px 0; padding: 10px 14px; border-radius: 6px;
  background: var(--panel); border: 1px solid var(--border); font-size: 13px; }
.result.error { border-color: var(--bad); color: var(--bad); }
.result.success { border-color: var(--good); color: var(--good); }

.actions { margin-top: 16px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

.tablewrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 6px; max-height: 420px; }
table.data { width: 100%; border-collapse: collapse; font-size: 12px; }
table.data thead th {
  background: var(--panel); padding: 8px 10px; text-align: left;
  border-bottom: 1px solid var(--border); position: sticky; top: 0;
  font-weight: 600; color: var(--accent);
}
table.data tbody td { padding: 6px 10px; border-bottom: 1px solid var(--border); }
table.data tbody tr:hover { background: var(--panel-2); }
table.data tr.selectable { cursor: pointer; }
table.data tr.selected { background: var(--accent-dim) !important; }

.summary {
  margin: 12px 0; padding: 12px 16px; border-radius: 6px;
  background: var(--panel); border: 1px solid var(--border);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px;
}
.summary .kv { display: flex; flex-direction: column; }
.summary .k { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.summary .v { color: var(--text); font-size: 16px; font-weight: 600; font-variant-numeric: tabular-nums; }

.num { text-align: right; font-variant-numeric: tabular-nums; }

pre.log { margin: 8px 0; padding: 10px; background: #f6f8fa; color: #1f2328;
  border: 1px solid var(--border); border-radius: 6px; font-size: 11px;
  max-height: 120px; overflow: auto; white-space: pre-wrap; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

code { background: var(--panel-2); padding: 1px 4px; border-radius: 3px; font-size: 0.9em; }

.head-row { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; }
.btn-link.active { background: var(--accent); color:#ffffff; }
.btn-link.sm { padding:3px 8px; font-size:11px; }

.flow-page { max-width: 1400px; }
.mt-lg { margin-top: 36px; }

.flow-grid { display:grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 24px; margin-top: 20px; }
.flow-col { display:flex; flex-direction:column; gap: 12px; }
.flow-h { margin: 0 0 4px; font-size: 11px; letter-spacing: 1.5px; color: var(--accent); font-weight: 600; }

.flow-card { background: var(--panel); border:1px solid var(--border); border-radius:8px; padding:14px; position: relative; }
.flow-card-tag { position:absolute; top:8px; right:10px; font-size:10px; text-transform:uppercase; color: var(--muted); letter-spacing:0.8px; }
.flow-card-title { font-weight:600; margin-bottom:4px; }
.flow-card-desc { color: var(--muted); font-size:12.5px; }
.flow-card.flow-emit { border-color: var(--accent); }

.flow-details { margin-top: 10px; }
.flow-details summary { cursor: pointer; color: var(--accent); font-size: 12px; }
.flow-cols { display:flex; flex-wrap:wrap; gap:4px; margin-top: 8px; }
.flow-cols code { background: var(--panel-2); padding: 2px 6px; border-radius:4px; font-size:10.5px; }

.flow-step { display:flex; gap:12px; align-items:flex-start; background: var(--panel); border:1px solid var(--border); border-radius:8px; padding:12px 14px; }
.flow-step-num { width:24px; height:24px; border-radius:50%; background: var(--accent); color:#ffffff; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:12px; flex:0 0 24px; }
.flow-step p { margin: 4px 0 0; font-size: 12.5px; }
.flow-arrow { text-align:center; color: var(--muted); font-size: 14px; }

.ledger-grid { display:grid; grid-template-columns: 1fr 1.5fr; gap: 24px; margin-top: 10px; }
.ledger-grid code { font-size: 11.5px; }

.pill { display:inline-block; padding:2px 8px; border-radius:10px; background: var(--panel-2); border:1px solid var(--border); font-size:11px; }
.pill.good { background: rgba(63, 185, 80, 0.15); border-color: var(--good); color: var(--good); }

details { background: var(--panel); border:1px solid var(--border); border-radius:8px; padding: 12px; margin-bottom: 12px; }
details summary { cursor: pointer; padding: 4px 0; }
details[open] table.data { margin-top: 10px; }