:root {
  --paper: #F2F4EF;
  --card: #FFFFFF;
  --ink: #17262B;
  --muted: #5B6D71;
  --line: #D3DAD2;
  --grid: #E1E6DF;
  --pine: #1E5B4A;
  --pine-d: #154236;
  --tape: #E2A21B;
  --tape-soft: #FBF1D6;
  --danger: #B3372B;
  --danger-soft: #FBE9E6;
  --r: 12px;
  --r-s: 8px;
  --font: "Segoe UI", "Noto Sans", "Noto Sans Arabic", system-ui, -apple-system, "Helvetica Neue", Tahoma, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.45 var(--font); }
h1, h2 { line-height: 1.25; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--tape); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.boot { text-align: center; color: var(--muted); padding: 40vh 0 0; }
.muted, .hint { color: var(--muted); }
.hint { font-size: .88rem; margin: 0; }

/* ---- top bar with tape-measure ruler ---- */
.bar { position: sticky; top: 0; z-index: 20; background: var(--ink); color: var(--paper); padding-top: env(safe-area-inset-top); }
.bar::after {
  content: ""; position: absolute; inset-inline: 0; bottom: 0; height: 11px;
  background:
    linear-gradient(90deg, var(--ink) 1px, transparent 1px) 0 100% / 80px 100% repeat-x,
    linear-gradient(90deg, var(--ink) 1px, transparent 1px) 0 100% / 8px 45% repeat-x,
    var(--tape);
}
.bar-in { max-width: 1080px; margin: 0 auto; display: flex; align-items: center; gap: 6px; padding: 8px 10px 19px; }
.bar h1 { flex: 1; min-width: 0; margin: 0; padding-inline: 4px; font-size: 1.15rem; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-end { display: flex; align-items: center; gap: 4px; }
.bar select { min-height: 40px; padding: 0 8px; background: transparent; color: var(--paper); border: 1px solid rgba(242,244,239,.4); border-radius: var(--r-s); font: inherit; font-size: .9rem; }
.bar select option { color: #000; }
[dir="rtl"] .back svg { transform: scaleX(-1); }

.icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: 0; border-radius: 10px; background: transparent; color: inherit; cursor: pointer; text-decoration: none; }
.icon-btn:hover { background: rgba(127,127,127,.16); }
.icon-btn.danger:hover { background: var(--danger-soft); color: var(--danger); }

/* ---- layout ---- */
.wrap { max-width: 1080px; margin: 0 auto; padding: 16px 14px 120px; }
.dock { position: fixed; inset-inline: 0; bottom: 0; z-index: 15; padding: 24px 14px calc(12px + env(safe-area-inset-bottom)); background: linear-gradient(to top, var(--paper) 62%, rgba(242,244,239,0)); pointer-events: none; }
.dock-in { max-width: 1080px; margin: 0 auto; display: flex; justify-content: flex-end; }
.dock .btn { pointer-events: auto; width: 100%; }
@media (min-width: 700px) { .dock .btn { width: auto; min-width: 240px; } }

/* ---- buttons ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 16px; border: 1.5px solid var(--ink); border-radius: var(--r-s); background: var(--card); color: var(--ink); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.btn:hover { background: #F7F9F5; }
.btn.primary { background: var(--pine); border-color: var(--pine); color: #fff; }
.btn.primary:hover { background: var(--pine-d); }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.danger:hover { background: var(--danger-soft); }
.btn.small { min-height: 38px; padding: 0 12px; font-size: .92rem; }
.btn[disabled] { opacity: .55; cursor: default; }

/* ---- cards & lists ---- */
.cards { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); }
.store { display: flex; flex-direction: column; gap: 6px; padding: 14px 16px; text-decoration: none; }
.store:hover { border-color: var(--pine); }
.store-name { font-weight: 650; font-size: 1.05rem; overflow-wrap: anywhere; }
.pill { align-self: flex-start; padding: 2px 10px; background: var(--tape-soft); border: 1px solid #EBCB7C; border-radius: 999px; font-size: .85rem; font-variant-numeric: tabular-nums; }
.search { margin-bottom: 14px; }

.shelf { display: flex; align-items: stretch; }
.shelf-main { flex: 1; min-width: 0; display: flex; gap: 12px; padding: 12px; text-decoration: none; }
.thumb { width: 92px; flex: none; display: flex; align-items: center; }
.thumb svg { width: 100%; height: auto; max-height: 104px; }
.shelf-info { min-width: 0; }
.shelf-info h2 { margin: 0 0 6px; font-size: 1.02rem; overflow-wrap: anywhere; }
.spec { display: flex; flex-wrap: wrap; gap: 2px 12px; margin: 0 0 4px; font-size: .9rem; font-variant-numeric: tabular-nums; }
.spec div { display: flex; gap: 4px; }
.spec dt { color: var(--muted); }
.spec dd { margin: 0; font-weight: 600; }
.shelf-actions { display: flex; flex-direction: column; justify-content: center; border-inline-start: 1px solid var(--line); }
.shelf-actions .icon-btn { color: var(--muted); border-radius: 0; }

.empty { border: 1.5px dashed #B6C1B8; border-radius: var(--r); padding: 28px 18px; text-align: center; color: var(--muted); }
.empty svg { width: 110px; height: auto; margin-bottom: 8px; }
.empty p { margin: 0 auto; max-width: 36ch; }

.store-head { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; justify-content: space-between; }
.store-head p { margin: 0; overflow-wrap: anywhere; }
.head-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.tabs { display: flex; gap: 4px; padding: 4px; margin: 14px 0; background: #E4E9E1; border-radius: 10px; }
.tabs button { flex: 1; min-height: 40px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font: inherit; font-weight: 600; cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--card); color: var(--ink); box-shadow: 0 1px 0 var(--line); }

/* ---- forms ---- */
.form { max-width: 620px; }
.field { margin-bottom: 14px; }
.form label { display: block; margin-bottom: 4px; font-weight: 600; font-size: .92rem; }
.form input[type="text"], .form input[type="number"], .form input[type="search"], .form input[type="password"], .form textarea, .search input {
  width: 100%; min-height: 46px; padding: 10px 12px; border: 1.5px solid #B6C1B8; border-radius: var(--r-s); background: #fff; color: inherit; font: inherit;
}
.form textarea { min-height: 84px; resize: vertical; }
.form input:focus, .form textarea:focus, .search input:focus { border-color: var(--pine); outline: 3px solid rgba(226,162,27,.55); outline-offset: 0; }
.search input { max-width: 100%; }
.num { position: relative; }
.num input { padding-inline-end: 46px !important; }
.unit { position: absolute; inset-inline-end: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: .88rem; pointer-events: none; }
.form fieldset { margin: 0 0 16px; padding: 14px 14px 4px; border: 1px solid var(--line); border-radius: var(--r); background: var(--card); min-width: 0; }
.form legend { padding: 0 6px; font-weight: 700; }
.dims { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.dims legend { grid-column: 1 / -1; }
.field small { display: block; margin-top: 3px; color: var(--muted); font-size: .82rem; }
.form-error { margin: 0 0 14px; padding: 10px 12px; background: var(--danger-soft); border: 1px solid #E7B4AD; border-radius: var(--r-s); color: #7D241B; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.form-actions .primary { flex: 1; min-width: 140px; }
.invalid { border-color: var(--danger) !important; }

.level { margin-bottom: 10px; padding: 10px 12px 12px; border: 1px solid var(--line); border-radius: 10px; background: #FAFBF9; }
.level-head { display: flex; align-items: center; gap: 8px; }
.lv-title { flex: 1; font-weight: 650; }
.lv-gap { color: var(--muted); font-size: .85rem; font-variant-numeric: tabular-nums; }
.level-fields { display: grid; grid-template-columns: 1fr 1.3fr; gap: 10px; margin-top: 6px; align-items: end; }
.level-fields input { color: var(--ink) !important; }
.level-fields label { font-weight: 500; font-size: .85rem; color: var(--muted); }
.level-tools { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.spread { display: flex; gap: 8px; align-items: center; }
.form .spread input { width: 76px; min-height: 38px; padding: 6px 10px; }

.editor { display: grid; gap: 16px; }
.preview { padding: 10px; border: 1px solid var(--line); border-radius: var(--r); background-color: var(--card); background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 20px 20px; min-height: 120px; }
.preview svg { display: block; width: 100%; height: auto; max-height: 44vh; margin: 0 auto; }
.preview .hint { padding: 28px 10px; text-align: center; }
@media (min-width: 880px) {
  .editor { grid-template-columns: minmax(340px, 1fr) minmax(360px, 1.15fr); align-items: start; }
  .preview-pane { order: 2; position: sticky; top: 96px; }
  .preview svg { max-height: 62vh; }
}

.login { max-width: 380px; margin: 0 auto; padding: 8vh 16px 40px; }
.login h2 { margin: 0 0 18px; font-size: 1.3rem; }

/* ---- shelf elevation drawing ---- */
.el-panel { fill: #E7ECE5; }
.el-up { fill: #4F6469; }
.el-bar { fill: var(--pine); }
.el-floor { stroke: var(--ink); }
.el-dim, .el-lead { stroke: #D49A12; fill: none; }
.el-txt { fill: var(--ink); font-family: var(--font); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ---- plan view ---- */
.plan-tools { display: flex; gap: 10px; align-items: flex-start; justify-content: space-between; margin-bottom: 8px; }
.zoom { display: flex; gap: 4px; flex: none; }
.plan-scroll { overflow: auto; max-height: 74vh; border: 1px solid var(--line); border-radius: var(--r); background: #EEF1EB; }
.plan-scroll svg { display: block; margin: 0 auto; user-select: none; -webkit-user-select: none; }
.plan svg text { font-family: var(--font); }
.p-grid { stroke: var(--grid); stroke-width: calc(var(--u) * 0.8px); fill: none; }
.p-room-fill { fill: #fff; }
.p-room { fill: none; stroke: var(--ink); stroke-width: calc(var(--u) * 2px); }
.p-halo { display: none; fill: none; stroke: var(--ink); stroke-width: calc(var(--u) * 1.4px); pointer-events: none; }
.p-shelf.sel .p-halo { display: inline; }
.p-aisle { fill: rgba(226,162,27,.2); stroke: #C58E10; stroke-width: calc(var(--u) * 1px); }
.p-aisle.bad { fill: rgba(179,55,43,.18); stroke: var(--danger); }
.p-shelf { cursor: grab; touch-action: none; }
.p-shelf:active { cursor: grabbing; }
.p-body { fill: var(--pine); stroke: var(--pine-d); stroke-width: calc(var(--u) * 1px); }
.p-shelf.sel .p-body { fill: #2A7A63; stroke: var(--ink); stroke-width: calc(var(--u) * 2.4px); }
.p-shelf.bad .p-body { fill: var(--danger); stroke: #7D241B; }
.p-front { stroke: var(--tape); stroke-width: calc(var(--u) * 3px); }
.p-label { fill: #fff; font-weight: 600; font-size: calc(var(--u) * 11px); pointer-events: none; }
.p-scale { stroke: var(--ink); stroke-width: calc(var(--u) * 1.6px); fill: none; }
.p-scale-t { fill: var(--ink); font-weight: 600; font-size: calc(var(--u) * 11px); }
.plan-sel { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; margin-top: 10px; padding: 10px 12px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); }
.plan-sel:empty, .warn:empty { display: none; }
.sel-info { display: flex; flex-direction: column; min-width: 0; }
.sel-info span { color: var(--muted); font-size: .88rem; font-variant-numeric: tabular-nums; }
.sel-actions { display: flex; gap: 8px; }
.warn { margin: 10px 0 0; padding: 9px 12px; background: var(--danger-soft); border: 1px solid #E7B4AD; border-radius: var(--r-s); color: #7D241B; }

#toast { position: fixed; inset-inline: 0; bottom: 92px; margin: auto; width: max-content; max-width: 90vw; padding: 10px 18px; background: var(--ink); color: #fff; border-radius: 999px; opacity: 0; transform: translateY(8px); transition: opacity .2s, transform .2s; pointer-events: none; z-index: 50; text-align: center; }
#toast.show { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { #toast { transition: none; } }
@media (max-width: 340px) { .level-fields { grid-template-columns: 1fr; } }