:root {
  --bg: #f5f6f8;
  --card: #fff;
  --border: #d8dce3;
  --text: #1b1f24;
  --muted: #5a6470;
  --accent: #1f6feb;
  --danger: #c83434;
}
* { box-sizing: border-box; }
html, body {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  font: 15px/1.45 "Segoe UI", system-ui, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
.app {
  max-width: 820px;
  margin: 24px auto;
  padding: 0 16px 80px;
}
h1 { margin: 0 0 16px; font-size: 22px; }
h2 { margin: 0 0 12px; font-size: 15px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
  margin-bottom: 14px;
}
.card.import-card {
  background: #f0f4fb;
  border-color: #c8d6ee;
}
.card.import-card select {
  display: block; width: 100%;
  padding: 8px 10px; border: 1px solid var(--border);
  border-radius: 5px; background: #fff;
  font-family: inherit; font-size: 16px;
}
.card.import-card .row { align-items: end; }
.card.import-card .row button { white-space: nowrap; }
label {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--muted);
}
label textarea,
label input,
label select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-family: inherit;
  font-size: 16px;
  color: var(--text);
  background: #fff;
}
label textarea { resize: vertical; }
table.lines input {
  font-size: 16px;
}
.row {
  display: flex;
  gap: 14px;
}
.row label { flex: 1; }

table.lines {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 10px;
}
table.lines th {
  text-align: left;
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  padding: 4px 6px;
  border-bottom: 1px solid var(--border);
}
table.lines td {
  padding: 3px 4px;
}
table.lines input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
}
button {
  font: inherit;
  cursor: pointer;
  padding: 8px 16px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
}
button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
button.btn-secondary {
  font-size: 13px;
  padding: 6px 12px;
}
button.del {
  background: transparent;
  border: 0;
  color: var(--danger);
  font-size: 18px;
  line-height: 1;
  padding: 4px 8px;
  cursor: pointer;
}
.actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.error {
  background: #fdecec;
  border: 1px solid #f3b8b8;
  color: var(--danger);
  padding: 9px 12px;
  border-radius: 6px;
  margin-top: 12px;
  font-size: 13px;
}