:root {
  --bg: #eef0f3;
  --panel: #ffffff;
  --col: #e3e6eb;
  --ink: #16181d;
  --muted: #5d6573;
  --line: #d3d8e0;
  --accent: #1f5fbf;
  --danger: #b42318;
  --ok: #157f3d;
  --shadow: 0 1px 2px rgba(16, 24, 40, .08), 0 1px 3px rgba(16, 24, 40, .06);
  --c-received: #6b7280;
  --c-waiting_materials: #c2410c;
  --c-materials_received: #a16207;
  --c-in_production: #1f5fbf;
  --c-ready_for_pickup: #7c3aed;
  --c-ready_ship: #0f766e;
  --c-complete: #157f3d;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318; --panel: #1c1f26; --col: #171a20; --ink: #eceef2; --muted: #9aa3b2;
    --line: #2c313b; --accent: #6ea2ff; --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg); color: var(--ink);
  font: 15px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex; flex-direction: column;
}
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
.ghost { background: none; border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; text-decoration: none; color: var(--ink); }
.ghost:hover { background: var(--col); }
.primary { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 8px 16px; font-weight: 600; }

/* ---------- header */
.top { display: flex; align-items: center; gap: 16px; padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand h1 { font-size: 20px; margin: 0; letter-spacing: -.01em; }
.sync { color: var(--muted); font-size: 13px; }
.sync.stale { color: var(--danger); }
#search { flex: 1; min-width: 200px; max-width: 420px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.who { margin-left: auto; display: flex; align-items: center; gap: 10px; color: var(--muted); }
.banner { background: #fef3c7; color: #78350f; padding: 8px 20px; font-weight: 600; }

/* ---------- board */
.board { flex: 1; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(230px, 1fr); gap: 12px; padding: 16px 20px; overflow-x: auto; min-height: 0; }
.column { background: var(--col); border-radius: 12px; display: flex; flex-direction: column; min-height: 0; border: 2px solid transparent; transition: border-color .1s, background .1s; }
.column.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--col)); }
.col-head { display: flex; align-items: center; gap: 8px; padding: 12px 14px 8px; border-top: 4px solid var(--c); border-radius: 12px 12px 0 0; }
.col-head h2 { font-size: 15px; margin: 0; }
.col-head .count { margin-left: auto; background: var(--panel); border-radius: 999px; padding: 1px 9px; font-size: 13px; font-weight: 600; color: var(--muted); }
.col-note { padding: 0 14px 6px; font-size: 12px; color: var(--muted); }
.cards { flex: 1; overflow-y: auto; padding: 4px 10px 12px; display: flex; flex-direction: column; gap: 8px; min-height: 80px; }
.empty { color: var(--muted); font-size: 13px; text-align: center; padding: 18px 0; }

/* ---------- card */
.card { position: relative; background: var(--panel); border-radius: 10px; padding: 10px 12px 10px 30px; box-shadow: var(--shadow); border-left: 4px solid var(--c); cursor: grab; user-select: none; -webkit-user-select: none; }
.card:hover { outline: 1px solid var(--line); }
.card.dragging { opacity: .35; }
.card.saving::after { content: "Saving…"; position: absolute; top: 8px; right: 10px; font-size: 11px; color: var(--muted); }
.grip { position: absolute; left: 0; top: 0; bottom: 0; width: 26px; display: grid; place-items: center; color: var(--muted); touch-action: none; cursor: grab; font-size: 14px; letter-spacing: -2px; }
.card .num { font-weight: 700; font-size: 16px; font-variant-numeric: tabular-nums; }
.card .who { font-weight: 500; margin: 2px 0 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .meta { display: flex; flex-wrap: wrap; gap: 6px 10px; font-size: 12.5px; color: var(--muted); }
.badge { display: inline-block; font-size: 11.5px; font-weight: 600; border-radius: 6px; padding: 1px 7px; background: var(--col); color: var(--ink); }
.badge.pickup { background: #ede9fe; color: #5b21b6; }
.badge.ship { background: #dbeafe; color: #1e40af; }
.badge.new { background: #dcfce7; color: #166534; }
@media (prefers-color-scheme: dark) {
  .badge.pickup { background: #2e1065; color: #ddd6fe; }
  .badge.ship { background: #172554; color: #bfdbfe; }
  .badge.new { background: #052e16; color: #bbf7d0; }
}
.badge.pay-paid { background: #dcfce7; color: #166534; }
.badge.pay-unpaid, .badge.pay-partial { background: #fee2e2; color: #991b1b; }
.badge.pay-terms { background: #fef3c7; color: #92400e; }
.badge.pay-card { background: #e0f2fe; color: #075985; }
@media (prefers-color-scheme: dark) {
  .badge.pay-paid { background: #052e16; color: #bbf7d0; }
  .badge.pay-unpaid, .badge.pay-partial { background: #450a0a; color: #fecaca; }
  .badge.pay-terms { background: #451a03; color: #fde68a; }
  .badge.pay-card { background: #082f49; color: #bae6fd; }
}
.age.old { color: var(--danger); font-weight: 600; }

.ghost-card { position: fixed; pointer-events: none; z-index: 50; transform: rotate(2deg); box-shadow: 0 10px 30px rgba(0,0,0,.25); opacity: .95; }

/* ---------- drawer */
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.3); z-index: 20; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(860px, 100vw); background: var(--panel); z-index: 30; box-shadow: -8px 0 30px rgba(0,0,0,.2); display: flex; flex-direction: column; }
.drawer-head { display: flex; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.drawer-head h2 { margin: 0; font-size: 20px; flex: 1; }
.drawer-head .print-btn { margin-right: 8px; font-weight: 600; }
#d-body { overflow-y: auto; padding: 16px 20px 40px; }
#d-body h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 20px 0 8px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
table.items { width: 100%; border-collapse: collapse; font-size: 14px; table-layout: fixed; }
table.items td, table.items th { padding: 7px 6px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
table.items col.c-sku { width: 34%; }
table.items col.c-q { width: 72px; }
table.items .note { white-space: normal; color: var(--muted); font-size: 13px; padding-top: 0; }
table.items th { font-size: 12px; color: var(--muted); font-weight: 600; }
table.items .q { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.sku { font-family: ui-monospace, Menlo, monospace; font-size: 12px; color: var(--muted); }
.history { list-style: none; padding: 0; margin: 0; font-size: 13.5px; }
.history li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.history time { display: block; font-size: 12px; color: var(--muted); }

/* ---------- confirm + toast */
dialog { border: 0; border-radius: 12px; padding: 20px 22px; background: var(--panel); color: var(--ink); box-shadow: 0 20px 50px rgba(0,0,0,.3); max-width: 380px; }
dialog::backdrop { background: rgba(0,0,0,.35); }
dialog p { margin: 0 0 16px; font-size: 16px; }
dialog .row { display: flex; justify-content: flex-end; gap: 8px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: 10px; z-index: 60; max-width: min(560px, 90vw); box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.toast.error { background: var(--danger); color: #fff; }

/* ---------- login */
.login-page { display: grid; place-items: center; }
.login { background: var(--panel); padding: 32px; border-radius: 14px; box-shadow: var(--shadow); width: min(380px, calc(100vw - 32px)); display: flex; flex-direction: column; gap: 14px; }
.login h1 { margin: 0; font-size: 22px; }
.login .sub { margin: -10px 0 4px; color: var(--muted); }
.login label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; font-size: 14px; }
.login input { padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); font-weight: 400; }
.login button { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 11px; font-weight: 600; margin-top: 4px; }
.err { color: var(--danger); margin: 0; }

@media (max-width: 640px) {
  .top { padding: 10px 16px; gap: 10px; }
  .board { padding: 12px 16px; grid-auto-columns: 82vw; scroll-snap-type: x mandatory; }
  .column { scroll-snap-align: start; }
  .who #me { display: none; }
}