:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1d2330;
  --muted: #6b7385;
  --line: #dfe3ea;
  --accent: #1f6feb;
  --error: #c62828;
  color-scheme: light;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
[hidden] { display: none !important; }

button {
  font: inherit;
  padding: 8px 14px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  cursor: pointer;
}
button.link { background: none; border: 0; color: var(--accent); padding: 0; }
button.secondary { background: var(--card); color: var(--accent); }
button:disabled { opacity: 0.6; cursor: default; }
.tab-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 12px; }
.tab-head h2 { margin: 0; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  width: 100%;
  max-width: 360px;
  display: grid;
  gap: 14px;
}
.card h1 { margin: 0; font-size: 22px; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
input { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; }
.error { color: var(--error); margin: 0; }
.muted { color: var(--muted); }

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  padding: 12px 16px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.topbar nav { display: flex; gap: 6px; flex-wrap: wrap; }
.topbar nav button { background: none; color: var(--text); border-color: var(--line); }
.topbar nav button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.who { margin-left: auto; color: var(--muted); font-size: 13px; }

.tab { padding: 16px; max-width: 1100px; margin: 0 auto; }
.tab h2 { margin: 4px 0 12px; font-size: 18px; }
.list { display: grid; gap: 8px; }
.row {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: baseline;
}
.row .main { font-weight: 600; }
.row .meta { color: var(--muted); font-size: 13px; }
.badge { font-size: 12px; padding: 1px 8px; border-radius: 10px; background: var(--bg); border: 1px solid var(--line); }
.empty { color: var(--muted); padding: 24px 0; }

button.row { width: 100%; text-align: left; color: var(--text); font: inherit; cursor: pointer; }
button.row:hover { border-color: var(--accent); }
button.row.status-new, button.row.status-sales_order { border-left: 4px solid var(--accent); }
button.row.status-rejected { opacity: 0.6; }
button.danger { color: var(--error); border-color: var(--error); }

.order-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin: 10px 0 4px; }
.order-head h3 { margin: 0; font-size: 20px; }
.steps { display: flex; flex-wrap: wrap; gap: 6px 20px; padding: 0; margin: 8px 0 14px; list-style: none; counter-reset: s; }
.steps li { counter-increment: s; color: var(--muted); font-size: 14px; }
.steps li::before { content: counter(s) ". "; }
.steps li.done { color: #1b7f3b; }
.steps li.done::before { content: "✓ "; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin-bottom: 12px; }
.panel h4 { margin: 0 0 10px; font-size: 15px; }
.panel p { margin: 0 0 10px; }
.panel select, .panel input[type=text] { font: inherit; padding: 8px; border: 1px solid var(--line); border-radius: 6px; width: 100%; max-width: 560px; }
.panel label { margin-top: 10px; max-width: 560px; }
.warn { display: inline-block; color: #8a5300; background: #fff4db; border-radius: 4px; padding: 1px 6px; font-size: 13px; margin: 2px 0; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 8px; }
.table-wrap { overflow-x: auto; }
table.lines { border-collapse: collapse; width: 100%; font-size: 14px; }
table.lines th, table.lines td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
table.lines th { font-size: 12px; color: var(--muted); font-weight: 600; }
table.lines .num { text-align: right; white-space: nowrap; }
table.lines input[type=checkbox] { width: 20px; height: 20px; }
table.lines tr.own td { color: var(--muted); }
.stock-ok { color: #1b7f3b; font-weight: 700; }
.stock-some { color: #8a5300; font-weight: 700; }
.stock-none { color: var(--muted); }
.help .panel { max-width: 820px; }
.help ol, .help ul { margin: 0 0 8px; padding-left: 22px; }
.help li { margin: 4px 0; }
.upload-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: stretch; }
.upload-row select { max-width: 260px; }
.drop { flex: 1 1 260px; display: grid; place-items: center; min-height: 44px; padding: 10px; border: 2px dashed var(--line); border-radius: 8px; color: var(--muted); cursor: pointer; text-align: center; }
.drop.over { border-color: var(--accent); color: var(--accent); }
.card-form { border-top: 1px solid var(--line); padding: 10px 0; }
.card-form .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 8px; margin-top: 6px; }
.card-form input { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; width: 100%; }
.panel input#po-number, .panel select#po-select { margin-top: 6px; }
td.diff { color: var(--error); font-weight: 700; }
p.warn { display: block; }
.draft {font-size: 12px; color: #8a5300; background: #fff4db; border-radius: 4px; padding: 1px 6px; }

.confirm-backdrop { position: fixed; inset: 0; background: rgba(20, 25, 35, 0.45); display: grid; place-items: center; padding: 16px; z-index: 50; }
.confirm-box { background: var(--card); border-radius: 10px; padding: 20px; max-width: 440px; width: 100%; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25); }
.confirm-box p { margin: 0 0 16px; font-size: 16px; }