:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --line: #e3e2de;
  --line-soft: #efeeeb;
  --ink: #1d1c1a;
  --ink-2: #5c5a55;
  --ink-3: #8b8880;
  --accent: #7a5c3e;
  --accent-soft: #f3ece4;
  --in: #2f7d55;
  --out: #b4462f;
  --transfer: #4a6da8;
  --adjust: #8a6d1f;
  --danger: #b4462f;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 14px rgba(0,0,0,.04);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--accent); }
button, input, select, textarea { font: inherit; color: inherit; }

/* ---------------------------------------------------------------- layout */
.app { display: none; min-height: 100vh; flex-direction: column; }
.app.on { display: flex; }

header.topbar {
  position: sticky; top: 0; z-index: 30;
  background: var(--surface); border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 12px; padding: 10px 14px;
}
.brand { font-weight: 650; letter-spacing: -.01em; }
.brand small { display: block; font-weight: 400; font-size: 11px; color: var(--ink-3); letter-spacing: .04em; text-transform: uppercase; }
.topbar .spacer { flex: 1; }
.whoami { font-size: 13px; color: var(--ink-2); text-align: right; line-height: 1.3; }
.whoami b { display: block; color: var(--ink); font-weight: 600; }

nav.tabs {
  position: sticky; top: 57px; z-index: 25;
  display: flex; gap: 2px; overflow-x: auto; background: var(--surface);
  border-bottom: 1px solid var(--line); padding: 0 8px; scrollbar-width: none;
}
nav.tabs::-webkit-scrollbar { display: none; }
nav.tabs button {
  flex: 0 0 auto; background: none; border: 0; padding: 12px 12px 10px;
  border-bottom: 2px solid transparent; color: var(--ink-2); cursor: pointer;
  font-size: 14px; white-space: nowrap;
}
nav.tabs button.active { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }

main { flex: 1; padding: 14px; max-width: 1200px; width: 100%; margin: 0 auto; }
.view { display: none; }
.view.on { display: block; }

/* --------------------------------------------------------------- pieces */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 14px;
}
.card > h2 {
  margin: 0; padding: 13px 14px; font-size: 14px; font-weight: 650;
  border-bottom: 1px solid var(--line-soft); display: flex; align-items: center; gap: 8px;
}
.card > h2 .spacer { flex: 1; }
.card .body { padding: 14px; }
.card .body.tight { padding: 0; }

.grid { display: grid; gap: 10px; }
.grid.c2 { grid-template-columns: 1fr 1fr; }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 720px) {
  .grid.c3, .grid.c4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 440px) {
  .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; }
  .grid.keep2 { grid-template-columns: 1fr 1fr; }
}

label.field { display: block; }
label.field > span {
  display: block; font-size: 12px; color: var(--ink-2); margin-bottom: 4px; font-weight: 500;
}
input[type=text], input[type=password], input[type=number], input[type=date],
input[type=search], select, textarea {
  width: 100%; padding: 10px 11px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input[readonly] { background: var(--bg); color: var(--ink-2); }
textarea { min-height: 64px; resize: vertical; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 15px; border-radius: 8px; border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-weight: 550; white-space: nowrap;
}
.btn:hover { background: var(--bg); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.sm { padding: 6px 10px; font-size: 13px; font-weight: 500; }
.btn.danger { color: var(--danger); border-color: #e8cfc8; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

.pill {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 600; letter-spacing: .02em;
  background: var(--accent-soft); color: var(--accent);
}
.pill.IN { background: #e4f2ea; color: var(--in); }
.pill.OUT { background: #fbe9e4; color: var(--out); }
.pill.TRANSFER { background: #e7edf7; color: var(--transfer); }
.pill.ADJUST { background: #f7f0dc; color: var(--adjust); }
.pill.low { background: #fbe9e4; color: var(--out); }
.pill.muted { background: var(--line-soft); color: var(--ink-2); }

.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 13px 14px; }
.stat .k { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); }
.stat .v { font-size: 24px; font-weight: 650; letter-spacing: -.02em; margin-top: 3px; }
.stat .sub { font-size: 12px; color: var(--ink-3); }
.stat.warn .v { color: var(--out); }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
th { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); font-weight: 600; background: #fbfbfa; position: sticky; top: 0; }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.wrap { white-space: normal; min-width: 180px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: #fbfaf8; }

.empty { padding: 34px 14px; text-align: center; color: var(--ink-3); }
.muted { color: var(--ink-3); }
.small { font-size: 12px; }
.hint { font-size: 12px; color: var(--ink-3); margin-top: 6px; }
.err { color: var(--danger); font-size: 13px; }

/* stock cards on narrow screens */
.stock-card { border-bottom: 1px solid var(--line-soft); padding: 12px 14px; }
.stock-card:last-child { border-bottom: 0; }
.stock-card .code { font-weight: 650; }
.stock-card .meta { font-size: 12px; color: var(--ink-3); margin-top: 2px; }
.stock-card .locs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.loc-chip {
  font-size: 12px; padding: 3px 9px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--line);
}
.loc-chip b { font-variant-numeric: tabular-nums; }
.loc-chip.zero { opacity: .5; }
.total-chip { font-size: 12px; padding: 3px 9px; border-radius: 999px; background: var(--accent); color: #fff; }
.total-chip.zero { background: var(--line); color: var(--ink-2); }

/* ---------------------------------------------------------------- login */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px;
}
.login-box { width: 100%; max-width: 360px; }
.login-box .card .body { padding: 20px; }
.login-title { text-align: center; margin-bottom: 18px; }
.login-title h1 { font-size: 20px; margin: 0 0 4px; letter-spacing: -.02em; }
.login-title p { margin: 0; color: var(--ink-3); font-size: 13px; }

/* --------------------------------------------------------------- dialog */
.sheet {
  position: fixed; inset: 0; background: rgba(20,18,16,.4); z-index: 100;
  display: none; align-items: flex-end; justify-content: center;
}
.sheet.on { display: flex; }
.sheet .inner {
  background: var(--surface); width: 100%; max-width: 620px;
  border-radius: 14px 14px 0 0; max-height: 92vh; overflow-y: auto;
}
@media (min-width: 640px) {
  .sheet { align-items: center; }
  .sheet .inner { border-radius: 14px; }
}
.sheet h3 {
  margin: 0; padding: 15px 16px; font-size: 15px; border-bottom: 1px solid var(--line-soft);
  position: sticky; top: 0; background: var(--surface); display: flex; align-items: center;
}
.sheet h3 .spacer { flex: 1; }
.sheet .sbody { padding: 16px; }
.sheet .sfoot {
  padding: 12px 16px; border-top: 1px solid var(--line-soft);
  display: flex; gap: 8px; justify-content: flex-end;
  position: sticky; bottom: 0; background: var(--surface);
}

.toast {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: 20px; z-index: 200;
  background: var(--ink); color: #fff; padding: 11px 17px; border-radius: 999px;
  font-size: 14px; box-shadow: 0 6px 24px rgba(0,0,0,.2); opacity: 0;
  transition: opacity .18s, transform .18s; pointer-events: none; max-width: 90vw;
}
.toast.on { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.toast.bad { background: var(--danger); }

.filters { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-bottom: 12px; }
.filters .row2 { grid-column: 1 / -1; display: flex; gap: 8px; flex-wrap: wrap; }
.filters .row2 select { width: auto; min-width: 130px; flex: 1 1 130px; }

.type-picker { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 14px; }
.type-picker button {
  padding: 11px 4px; border: 1px solid var(--line); background: #fff;
  border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 550;
}
.type-picker button.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }

.line-item { display: grid; grid-template-columns: 1fr 90px auto; gap: 8px; align-items: end; margin-bottom: 8px; }
@media (max-width: 480px) { .line-item { grid-template-columns: 1fr 80px auto; } }

.suggest { position: relative; }
.suggest .list {
  position: absolute; z-index: 40; left: 0; right: 0; top: calc(100% + 3px);
  background: #fff; border: 1px solid var(--line); border-radius: 8px;
  box-shadow: var(--shadow); max-height: 260px; overflow-y: auto; display: none;
}
.suggest .list.on { display: block; }
.suggest .list div { padding: 9px 11px; cursor: pointer; border-bottom: 1px solid var(--line-soft); font-size: 14px; }
.suggest .list div:last-child { border-bottom: 0; }
.suggest .list div:hover, .suggest .list div.hi { background: var(--accent-soft); }
.suggest .list div small { display: block; color: var(--ink-3); font-size: 12px; }

.pager { display: flex; align-items: center; gap: 10px; padding: 10px 14px; font-size: 13px; color: var(--ink-2); }
.pager .spacer { flex: 1; }