:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #1f4ed8;
  --primary-hover: #1739a6;
  --danger: #dc2626;
  --success-bg: #ecfdf5;
  --success-fg: #065f46;
  --error-bg: #fef2f2;
  --error-fg: #991b1b;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.row { display: flex; align-items: center; gap: 16px; }
.between { justify-content: space-between; }
.muted { color: var(--muted); }

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  margin-bottom: 20px;
}
.brand {
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  font-size: 16px;
}
.nav { margin-left: auto; display: flex; gap: 18px; }
.nav a { color: var(--text); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--primary); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 22px;
}
.card.narrow { max-width: 420px; margin: 60px auto; }
.card h1 { margin: 0 0 6px; font-size: 22px; }
.card h2 { margin: 22px 0 10px; font-size: 16px; font-weight: 600; }

.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text); }
.form label > input,
.form label > textarea,
.form label > select {
  font: inherit;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
}
.form textarea { resize: vertical; min-height: 56px; }
.form label > input:focus, .form label > textarea:focus { outline: 2px solid var(--primary); outline-offset: -1px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.actions { display: flex; gap: 10px; margin-top: 18px; }

.btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 9px 14px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
  transition: background .15s ease, border-color .15s ease;
}
.btn:hover { background: #f1f3f6; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-secondary { background: #fff; border-color: var(--primary); color: var(--primary); }
.btn-secondary:hover { background: #eef2ff; }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: #fef2f2; }
.btn-ghost { background: transparent; border: none; color: var(--muted); padding: 4px 8px; font-size: 18px; line-height: 1; }
.btn-ghost:hover { color: var(--danger); background: transparent; }

.items, .data {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
  font-size: 14px;
}
.items th, .data th, .items td, .data td {
  border: 1px solid var(--line);
  padding: 8px 10px;
}
.items th, .data th { background: #f9fafb; font-weight: 600; text-align: left; }
.items input { width: 100%; border: 1px solid var(--line); border-radius: 4px; padding: 6px 8px; font: inherit; }
.items .sum, .right { text-align: right; }
.items tfoot td { background: #fbfbfd; }

.flash-list { margin-bottom: 14px; }
.flash {
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 8px;
  font-size: 14px;
}
.flash-success { background: var(--success-bg); color: var(--success-fg); }
.flash-error { background: var(--error-bg); color: var(--error-fg); }

.kv { display: grid; grid-template-columns: 200px 1fr; gap: 6px 14px; margin: 0 0 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

.receipts { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.receipts li { display: flex; align-items: center; gap: 10px; }
.badge { display: inline-block; background: #eef2ff; color: var(--primary); padding: 2px 8px; border-radius: 4px; font-size: 12px; }

.notes { background: #f9fafb; padding: 10px; border-radius: 6px; white-space: pre-wrap; font: inherit; }

.footer { margin: 40px 0 20px; font-size: 12px; }