:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --ok: #4ade80;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: linear-gradient(180deg, #0f172a, #111827);
  color: var(--text);
  min-height: 100vh;
}
main { max-width: 720px; margin: 0 auto; padding: 1rem; }
header { text-align: center; margin-bottom: 1.5rem; }
.card {
  background: var(--card);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
label { display: block; margin: .5rem 0 .25rem; color: var(--muted); font-size: .9rem; }
input, select, button, textarea {
  width: 100%;
  padding: .75rem;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #0b1220;
  color: var(--text);
  font-size: 1rem;
}
button {
  background: var(--accent);
  color: #082f49;
  border: none;
  font-weight: 600;
  cursor: pointer;
  margin-top: .75rem;
}
button.secondary { background: #334155; color: var(--text); }
.row { display: grid; gap: .75rem; }
@media (min-width: 640px) { .row.two { grid-template-columns: 1fr 1fr; } }
.checkbox-row { display: flex; align-items: center; gap: .5rem; margin: .5rem 0; }
.checkbox-row input { width: auto; }
.event-list { margin: .75rem 0; }
.event-item { padding: .4rem 0; border-bottom: 1px solid #334155; }
.event-row {
  display: grid;
  gap: .35rem;
  padding: .75rem 0;
  border-bottom: 1px solid #334155;
}
.qty-row {
  display: grid;
  grid-template-columns: auto 5rem auto;
  align-items: center;
  gap: .5rem;
  margin-left: 1.75rem;
}
.qty-row label { margin: 0; }
.qty-row input { width: 5rem; padding: .4rem .5rem; }
.matrix-wrap { overflow-x: auto; margin: .75rem 0; }
.matrix-table {
  border-collapse: collapse;
  width: max-content;
  min-width: 100%;
  font-size: .9rem;
}
.matrix-table th, .matrix-table td {
  border: 1px solid #334155;
  padding: .35rem .45rem;
  text-align: center;
  white-space: nowrap;
}
.matrix-table th.matrix-corner,
.matrix-table td.matrix-name {
  text-align: left;
  position: sticky;
  left: 0;
  background: #1e293b;
  z-index: 1;
}
.matrix-table tr.matrix-task td {
  background: #0b1220;
  text-align: left;
}
.matrix-table input.matrix-cell { width: 1.1rem; height: 1.1rem; margin: 0; }
.matrix-sum { font-weight: 600; color: var(--accent); }
.qr-box { display: flex; flex-direction: column; align-items: center; gap: .5rem; margin: 1rem 0; }
.muted { color: var(--muted); font-size: .9rem; }
.expense-item, .payment-item { padding: .5rem 0; border-bottom: 1px solid #334155; }
.ok { color: var(--ok); }