:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #1b1f27;
  --muted: #5d6573;
  --line: #dde2ea;
  --primary: #1f5fad;
  --primary-text: #ffffff;
  --danger: #b3261e;
  --ok: #1e7b34;
  --colour: #8a3ffc;
  --warn: #9a5b00;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1b1f26;
    --text: #e6e9ef;
    --muted: #9aa3b2;
    --line: #2d333d;
    --primary: #8ab4f8;
    --primary-text: #0b1d36;
    --danger: #f2b8b5;
    --ok: #7fd18b;
    --colour: #c6a6ff;
    --warn: #f0b45a;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
[hidden] { display: none !important; }
h1 { margin: 0 0 4px; font-size: 1.4rem; }
h2 { font-size: 1rem; margin: 0 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.error { color: var(--danger); }
.ok { color: var(--ok); }

button, input, select { font: inherit; }
button {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
}
button:disabled { opacity: 0.5; cursor: wait; }
button.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
button.ghost { background: transparent; }
button.danger { color: var(--danger); }
input, select {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
}

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login form { width: min(380px, 100%); display: grid; gap: 12px; }
.login label { display: grid; gap: 4px; }

header {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 1;
}
.spacer { flex: 1; }
.live { color: var(--muted); }
.live.on { color: var(--ok); }

.tabs { display: flex; gap: 4px; }
.tab { background: transparent; }
.tab.active { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.agent.ok { color: var(--ok); }
.agent.error { color: var(--danger); }

.scan { margin: 16px; }
.scan form { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.scan label { display: grid; gap: 4px; }
.scan input { width: 16ch; font-size: 1.3rem; letter-spacing: 0.15em; }
#scan-result:not(:empty) { margin-top: 12px; }
#scan-result p { margin: 0; font-size: 1.1rem; }

.columns { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; padding: 0 16px 24px; }
@media (max-width: 1200px) { .columns { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) { .columns { grid-template-columns: 1fr; } }
.state { font-weight: 600; }
.state.error { color: var(--danger); }
.state.ok { color: var(--ok); }
.state.warn, p.warn { color: var(--warn); font-weight: 600; }
button.warn { border-color: var(--warn); color: var(--warn); }

.items-card { margin: 16px; }
.table-wrap { overflow-x: auto; }
table.items { width: 100%; border-collapse: collapse; }
table.items th, table.items td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.items td.c { text-align: center; }
table.items input:not([type="checkbox"]), table.items select { width: 100%; min-width: 8ch; }
table.items td:first-child input { min-width: 18ch; }
.add-item { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.add-item input:first-child { flex: 1; min-width: 16ch; }
.count { background: var(--primary); color: var(--primary-text); border-radius: 999px; padding: 0 8px; font-size: 0.8rem; }
.count:empty { display: none; }
.list { display: grid; gap: 10px; }
.empty { padding: 12px 0; }

.order { display: grid; gap: 6px; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.file { font-weight: 600; word-break: break-word; }
.opts { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; font-size: 0.85rem; }
.tag.colour { color: var(--colour); border-color: var(--colour); font-weight: 600; }
.tag.bind { font-weight: 600; }
.note { background: var(--bg); border-radius: 6px; padding: 6px 8px; }
.total { border-top: 1px solid var(--line); padding-top: 6px; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

.toast {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px; max-width: calc(100% - 32px);
}