:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #666;
  --border: #ddd;
  --accent: #2563eb;
  --danger-bg: #fdecec;
  --danger-fg: #8a1f1f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --fg: #e8e8e8;
    --muted: #9aa0aa;
    --border: #333844;
    --accent: #5b8def;
    --danger-bg: #3a1c1c;
    --danger-fg: #f4a3a3;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
header h1 { font-size: 1.1rem; margin: 0; }
nav { display: flex; gap: 0.5rem; }
.nav-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
}
.nav-btn.active { background: var(--accent); color: white; border-color: var(--accent); }

main { padding: 1.5rem; max-width: 1100px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }

form { display: flex; flex-direction: column; gap: 0.75rem; max-width: 480px; }
form.inline-form { flex-direction: row; flex-wrap: wrap; max-width: none; align-items: center; }
label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.9rem; }
input, select {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}
button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  cursor: pointer;
}
button:hover { opacity: 0.9; }
.del-company { background: #f97316; }
small { color: var(--muted); }
.hint { color: var(--muted); font-size: 0.9rem; }

table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); }

#review-grid { margin-top: 1rem; overflow-x: auto; }
.review-actions { margin-top: 1rem; }

.row-unmatched { background: var(--danger-bg) !important; color: var(--danger-fg); }

#accounts-groups { margin-top: 1rem; }
.account-group { border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem 0.75rem; margin-bottom: 0.5rem; }
.account-group summary { cursor: pointer; font-weight: 600; }
.account-group ul { list-style: none; margin: 0.5rem 0 0; padding: 0; }
.account-group li { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.35rem 0; border-bottom: 1px solid var(--border); }
.account-group li:last-child { border-bottom: none; }