:root {
  --bg: #f4f5f7; --card: #fff; --text: #1d2129; --muted: #6b7280; --line: #e3e5e8;
  --accent: #2563eb; --accent-text: #fff; --ok: #15803d; --bad: #b91c1c; --warn-bg: #fff4d6;
  --up: #e0ecfb; --down: #e2f3e4; --total: #fff2cc; --chip: #eef2ff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b; --card: #1f2227; --text: #e8eaed; --muted: #9aa0a6; --line: #33373d;
    --accent: #4f8cff; --accent-text: #fff; --ok: #4ade80; --bad: #f87171; --warn-bg: #3a3218;
    --up: #1d2b3f; --down: #1d3324; --total: #3a3420; --chip: #262c3d;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
/* фон: бледная мозаика из фото; плитка фиксированного размера — не растягивается, просто повторяется */
body::before { content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: url(/static/bg-tile.webp) repeat; background-size: 300px 300px; opacity: .16; filter: grayscale(.2); }
@media (prefers-color-scheme: dark) { body::before { opacity: .12; } }
@media (max-width: 640px) { body::before { background-size: 220px 220px; } }
body.center { display: flex; min-height: 100vh; align-items: center; justify-content: center; padding: 16px; }
h1 { margin: 0 0 12px; font-size: 24px; }
h2 { margin: 0 0 12px; font-size: 19px; }
h3 { margin: 16px 0 8px; font-size: 16px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.warn { background: var(--warn-bg); padding: 8px 12px; border-radius: 8px; }
.err { color: var(--bad); }
.okc { color: var(--ok); }

.login-card { background: var(--card); padding: 24px; border-radius: 14px; max-width: 380px; width: 100%; box-shadow: 0 2px 12px rgba(0,0,0,.08); }

.top { position: sticky; top: 0; z-index: 5; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px;
  background: var(--card); border-bottom: 1px solid var(--line); padding: 8px 16px; }
.brand { font-weight: 700; font-size: 17px; }
#tabs { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
#tabs button { border: 0; background: none; color: var(--text); padding: 7px 11px; border-radius: 8px; cursor: pointer; font: inherit; }
#tabs button.on { background: var(--accent); color: var(--accent-text); }
.who { display: flex; gap: 10px; align-items: center; color: var(--muted); font-size: 13px; }
.who form { margin: 0; }

main#view { max-width: 1100px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border-radius: 12px; padding: 16px; margin-bottom: 14px; border: 1px solid var(--line); }

.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.row > label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.card > .row + .row, .card > .row + .hint, .card > .hint + .row, .card > p + .row { margin-top: 12px; }
#o-date { min-width: 240px; }
.grow { flex: 1; min-width: 200px; }
input, select, textarea { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; min-height: 38px; width: 100%; }
textarea { min-height: 60px; resize: vertical; }
input[type=checkbox] { width: auto; min-height: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.qty { max-width: 130px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--line); background: var(--card);
  color: var(--text); padding: 8px 14px; border-radius: 8px; cursor: pointer; font: inherit; text-decoration: none; min-height: 38px; }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.danger { color: var(--bad); }
.btn.wide { width: 100%; margin-top: 8px; }
.btn.sm { padding: 4px 9px; min-height: 30px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: default; }
button.link.danger-link { color: var(--bad); }
button.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.seg button { border: 0; background: var(--card); color: var(--text); padding: 8px 14px; cursor: pointer; font: inherit; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--accent); color: var(--accent-text); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
td.n, th.n { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
tr.cat td { background: var(--bg); font-weight: 600; font-size: 13px; color: var(--muted); }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--chip); }
tr.arch td { opacity: .55; }
.zero { color: var(--muted); }
.table-wrap { overflow-x: auto; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.chip { background: var(--chip); border: 1px solid var(--line); border-radius: 16px; padding: 4px 10px; cursor: pointer; font: inherit; color: var(--text); }
.hint { margin-top: 8px; font-size: 14px; }

.list > div { padding: 10px 0; border-bottom: 1px solid var(--line); white-space: pre-line; }
.list > div:last-child { border-bottom: 0; }
.entry { display: flex; justify-content: space-between; align-items: center; gap: 10px; }

.docs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.doc { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; display: flex; flex-direction: column; }
.doc .thumb { height: 120px; display: flex; align-items: center; justify-content: center; font-size: 42px; background: var(--card); }
.doc .thumb img { width: 100%; height: 100%; object-fit: cover; }
.doc .meta { padding: 8px; font-size: 13px; flex: 1; word-break: break-word; }
.doc .act { display: flex; gap: 4px; padding: 0 8px 8px; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 20; display: flex; align-items: flex-start; justify-content: center; padding: 24px 12px; overflow-y: auto; }
.modal[hidden] { display: none; }
.modal-box { background: var(--card); border-radius: 14px; padding: 20px; width: 100%; max-width: 1000px; position: relative; }
.modal-x { position: absolute; right: 10px; top: 10px; border: 0; background: none; font-size: 20px; cursor: pointer; color: var(--muted); }
.stock-badges { display: flex; gap: 10px; flex-wrap: wrap; margin: 8px 0 4px; }
.stock-badges div { padding: 8px 12px; border-radius: 10px; }
.b-wh { background: var(--up); } .b-wh.zero { opacity: .55; } .b-total { background: var(--total); }

.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: #222; color: #fff; padding: 10px 16px;
  border-radius: 10px; z-index: 30; max-width: calc(100% - 32px); box-shadow: 0 4px 16px rgba(0,0,0,.3); }
.toast.bad { background: #b91c1c; }

@media (max-width: 640px) {
  .top { padding: 8px 10px; }
  #tabs { order: 3; flex: 1 0 100%; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  #tabs button { white-space: nowrap; }
  .who { margin-left: auto; }
  .seg button { padding: 7px 10px; }
  .tl-card { flex-basis: 78vw; }
  main#view { padding: 10px; }
  .card { padding: 12px; }
  th, td { padding: 7px 6px; }
  .qty { max-width: none; }
  .who span { display: none; }
}

/* лента истории товара */
.tl { display: flex; gap: 12px; overflow-x: auto; padding: 6px 2px 12px; scroll-snap-type: x proximity; }
.tl-card { flex: 0 0 230px; scroll-snap-align: end; background: var(--bg); border: 1px solid var(--line); border-top: 4px solid var(--muted);
  border-radius: 10px; padding: 10px; display: flex; flex-direction: column; gap: 4px; font-size: 14px; }
.tl-card.t-in { border-top-color: #16a34a; } .tl-card.t-out { border-top-color: #dc2626; }
.tl-card.t-move { border-top-color: #2563eb; } .tl-card.t-inv { border-top-color: #9333ea; }
.tl-card.t-arch { border-style: dashed; border-top-style: solid; border-top-color: #a3a3a3; opacity: .92; }
.tl-date { font-weight: 600; }
.tl-type { color: var(--muted); font-size: 13px; }
.tl-qty { font-size: 20px; font-weight: 700; }
.tl-com { white-space: pre-line; word-break: break-word; }
.tl-docs { display: flex; flex-wrap: wrap; gap: 6px; }
.tl-docs img { width: 64px; height: 64px; object-fit: cover; border-radius: 6px; border: 1px solid var(--line); display: block; }
.tl-file { width: 64px; height: 64px; display: flex; align-items: center; justify-content: center; font-size: 30px; background: var(--card);
  border: 1px solid var(--line); border-radius: 6px; text-decoration: none; }
.tl-after { margin-top: auto; padding-top: 6px; border-top: 1px dashed var(--line); }
.tl-chart svg { width: 100%; height: auto; max-height: 220px; display: block; }
.ch-line { fill: none; stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; }
.ch-pt { fill: var(--accent); }
.ch-arch { fill: #a3a3a3; }
.ch-axis { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.ch-grid { stroke: var(--line); stroke-dasharray: 4 4; vector-effect: non-scaling-stroke; }
.ch-lbl { fill: var(--muted); font-size: 11px; }
details.edit { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 10px; }
details.edit summary { cursor: pointer; font-weight: 600; }