:root {
  --bg: #f6f5f1;
  --panel: #ffffff;
  --ink: #1f2328;
  --muted: #6b7280;
  --line: #e4e2dc;
  --accent: #b23a3a;      /* seal red */
  --accent-ink: #ffffff;
  --found: #1f8a53;
  --missing: #b45309;
  --flag: #d97706;        /* amber — flagged Trad/Simp divergence */
  --dup: #7c3aed;         /* purple — duplicated simplified form on the simp board */
  --moved: #374151;       /* dark gray — words in Movement_List */
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.05);
  --radius: 14px;
}

* { box-sizing: border-box; }

/* The app shows/hides sections via the `hidden` attribute; make it always win
   over class-level display rules (e.g. .modal/.statusbar/.loc-layout). */
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

/* Mobile-first: compact base padding; widen on larger screens. Extra bottom
   room so the fixed move-bar never covers content. */
.page { max-width: 940px; margin: 0 auto; padding: 18px 12px 96px; }
@media (min-width: 720px) { .page { padding: 32px 20px 96px; } }

.head h1 {
  margin: 0 0 6px;
  font-size: 22px;
  letter-spacing: .5px;
}
@media (min-width: 720px) { .head h1 { font-size: 28px; } }
.sub { margin: 0; color: var(--muted); max-width: 68ch; }
.sub code {
  background: #eceae4; padding: 1px 5px; border-radius: 5px; font-size: .9em;
}

/* ---- buttons ---- */
.btn {
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: filter .12s, background .12s, border-color .12s;
}
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:not(:disabled):hover { filter: brightness(1.07); }
.btn-secondary { background: #2f3540; color: #fff; align-self: flex-start; }
.btn-secondary:hover { filter: brightness(1.1); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:not(:disabled):hover { border-color: var(--muted); }
.btn-danger { background: var(--accent); color: var(--accent-ink); }
.btn-danger:not(:disabled):hover { filter: brightness(1.07); }
/* board action (Sort All): an action, not a filter and not an export — quieter
   ink, tighter shape and a glyph keep it from reading as one of the pills */
.btn-tool {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent; border-color: transparent; color: var(--muted);
  padding: 8px 12px; font-size: 13px;
}
.btn-tool:not(:disabled):hover { background: var(--panel); border-color: var(--line); color: var(--ink); }
.btn-tool .btn-ico { font-size: 12px; line-height: 1; opacity: .75; }

/* ---- shared status bar ---- */
.statusbar {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 20px 0 12px;
  padding: 12px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; line-height: 1.1; }
.stat-num { font-size: 22px; font-weight: 700; }
.stat-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
.stat.found .stat-num { color: var(--found); }
.stat.missing .stat-num { color: var(--missing); }
.spacer { flex: 1; }
.check { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; user-select: none; }

/* ---- tabs ---- */
/* One horizontally-scrollable row: swipeable on phones, fits without scrolling
   on wide screens. */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--line);
  margin-bottom: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  appearance: none;
  border: none;
  background: transparent;
  padding: 11px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  border-radius: 8px 8px 0 0;
  transition: color .12s, border-color .12s, background .12s;
  white-space: nowrap;
  flex: none;
}
@media (min-width: 720px) { .tab { padding: 11px 18px; font-size: 15px; } }
.tab:hover { color: var(--ink); background: #efece5; }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ---- panel ---- */
/* Panel header: the description gets its own full-width line, and below it a
   single toolbar row holds every control — toggles on the left, exports pushed
   to the right by the spacer. */
.panel { margin-top: 8px; }
.panel-head { margin: 14px 0 12px; }
.panel-desc { margin: 0 0 10px; color: var(--muted); font-size: 13px; max-width: 105ch; }
.panel-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
/* flagged-words controls: threshold + its export button travel together */
.flag-group { display: inline-flex; align-items: center; gap: 8px; }
.flag-th { font-size: 12.5px; font-weight: 600; color: var(--muted); white-space: nowrap; }
.flag-group input {
  width: 56px; padding: 7px 6px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: var(--panel); color: var(--ink); text-align: center;
}
.flag-group input:focus-visible { outline: 2px solid var(--accent); border-color: var(--accent); }
/* one-off processing (isolated from the shared word list) */
.oneoff {
  margin-top: 22px; padding: 14px 16px;
  background: var(--panel); border: 1px dashed var(--line); border-radius: var(--radius);
}
.oneoff-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
.oneoff-info { color: var(--muted); font-size: 12.5px; flex: 1; min-width: 160px; }

/* flagged (⚑) column in the word table — shows reason codes (S / R / D) */
.grid td.col-flag, .grid th.col-flag { text-align: center; }
.flag-badge {
  color: var(--flag); font-size: 12px; font-weight: 700;
  letter-spacing: 1px; line-height: 1; font-variant-numeric: normal;
}

/* segmented toggle (Traditional / Simplified) */
.segmented {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 9px;
  overflow: hidden;
  background: var(--panel);
}
.seg {
  appearance: none;
  border: none;
  background: transparent;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}
.seg + .seg { border-left: 1px solid var(--line); }
.seg.active { background: var(--accent); color: #fff; }

/* ---- table ---- */
.emptystate {
  margin-top: 18px;
  padding: 48px 20px;
  text-align: center;
  color: var(--muted);
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}
.table-wrap {
  margin-top: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: auto;
  max-height: 62vh;
  box-shadow: var(--shadow);
}
.grid { width: 100%; border-collapse: collapse; white-space: nowrap; }
.grid th, .grid td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 720px) { .grid th, .grid td { padding: 9px 16px; } }
.grid thead th {
  position: sticky;
  top: 0;
  background: #faf9f6;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--muted);
  font-weight: 600;
  z-index: 1;
}
.grid thead tr.group-row th { top: 0; height: 16px; }
/* only the second row of a two-row header is offset; single-row headers stay at 0 */
.grid thead tr.group-row + tr th { top: 34px; }
.grid thead th.grp {
  text-align: center;
  background: #f1efe8;
  color: #8a8578;
}
.grid tbody tr:last-child td { border-bottom: none; }
.grid tbody tr:hover { background: #faf7f2; }

/* traditional | simplified divider */
.sep { border-left: 2px solid #d8d5cd; }

.col-act { width: 34px; text-align: center; }
.row-del {
  border: none; background: transparent; color: var(--line);
  cursor: pointer; line-height: 0; padding: 4px 6px; border-radius: 6px;
}
.row-del svg { width: 15px; height: 15px; display: block; }
tr:hover .row-del { color: var(--muted); }
.row-del:hover { background: #f0e5e5; color: var(--accent); }

/* sortable / filterable headers (Word Processor). th is sticky (=positioned),
   so ::after anchors to it without needing position:relative. */
.grid thead th.sortable { cursor: pointer; user-select: none; padding-right: 22px; }
.grid thead th.sortable:hover { color: var(--accent); background: #f1ede4; }
.grid thead th.sortable::after {
  content: "⇅"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  font-size: 10px; opacity: .3;
}
.grid thead th.sort-asc::after { content: "▲"; opacity: .95; color: var(--accent); }
.grid thead th.sort-desc::after { content: "▼"; opacity: .95; color: var(--accent); }
.grid thead th.filtered { color: var(--accent); }
.grid thead th.filtered::before {
  content: ""; position: absolute; left: 4px; top: 5px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}

.view-note { color: var(--muted); font-size: 12.5px; }
.linkbtn { border: none; background: none; color: var(--accent); cursor: pointer; font: inherit; text-decoration: underline; padding: 0; }

/* column sort/filter popover */
.col-menu {
  position: fixed; z-index: 60; min-width: 208px; max-width: 280px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 12px 36px rgba(0,0,0,.24); padding: 9px; font-size: 13px; color: var(--ink);
}
.cm-lbl { font-size: 10.5px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); margin: 2px 2px 4px; }
.cm-lbl + .cm-lbl, .cm-set-list + .cm-lbl { margin-top: 10px; }
.cm-sort { display: flex; gap: 6px; }
.cm-sort .cm-btn { flex: 1; }
.cm-row { display: flex; gap: 6px; align-items: center; }
.cm-min, .cm-max, .cm-contains, .cm-search {
  width: 100%; min-width: 0; border: 1px solid var(--line); border-radius: 7px;
  padding: 6px 8px; font: inherit; background: var(--panel); color: var(--ink);
}
.cm-search { margin-top: 6px; }
.cm-min:focus-visible, .cm-max:focus-visible, .cm-contains:focus-visible, .cm-search:focus-visible {
  outline: 2px solid var(--accent); border-color: var(--accent);
}
.cm-tools { display: flex; gap: 6px; margin-bottom: 2px; }
.cm-set-list {
  max-height: 210px; overflow: auto; border: 1px solid var(--line);
  border-radius: 8px; padding: 4px; margin-top: 6px;
}
.cm-check { display: flex; align-items: center; gap: 8px; padding: 3px 6px; border-radius: 6px; cursor: pointer; }
.cm-check:hover { background: #f1ede4; }
.cm-check .val { font-family: "Noto Serif TC", "Microsoft JhengHei", serif; font-size: 17px; }
.cm-foot { display: flex; justify-content: space-between; gap: 6px; margin-top: 10px; }
.cm-btn {
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  border-radius: 7px; padding: 6px 11px; cursor: pointer; font: inherit;
}
.cm-btn:hover { border-color: var(--accent); color: var(--accent); }
.cm-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.col-id { width: 56px; color: var(--muted); font-variant-numeric: tabular-nums; }
.col-word,
.col-simp { font-size: 22px; font-family: "Noto Serif TC", "Microsoft JhengHei", serif; }
.col-radical { width: 120px; }
.col-strokes { width: 84px; font-variant-numeric: tabular-nums; }
.col-tid,
.col-sid { width: 64px; color: var(--muted); font-variant-numeric: tabular-nums; }
.col-struct { width: 76px; }
.col-freq { width: 68px; font-variant-numeric: tabular-nums; }

.struct {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 600;
}
.struct.duti { background: #eceae4; color: #6b6555; }   /* 獨體 — integral */
.struct.heti { background: #e3efe4; color: #1f7a44; }   /* 合體 — compound */

.rad-char {
  font-size: 20px;
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif;
  margin-right: 8px;
}
.rad-num {
  display: inline-block;
  min-width: 20px;
  padding: 1px 7px;
  border-radius: 20px;
  background: #eceae4;
  color: var(--muted);
  font-size: 12px;
  vertical-align: middle;
}
tr.missing { background: #fdf6ec; }
tr.missing:hover { background: #fbf0e0; }
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  background: #fbe7cf;
  color: var(--missing);
  font-size: 12px;
  font-weight: 600;
}

/* ---- forge table ---- */
.col-n { width: 40px; color: var(--muted); font-variant-numeric: tabular-nums; }
.col-comps { white-space: normal; }
.comp-chip {
  display: inline-block;
  margin: 2px 6px 2px 0;
  padding: 3px 10px;
  border-radius: 8px;
  background: #e3efe4;
  border: 1px solid #cfe2d3;
  color: #1f7a44;
  font-size: 20px;
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif;
  line-height: 1.2;
}
.base-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  background: #f1efe8;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}
.forge-grid tr.base { color: var(--muted); }

/* recipe cells */
.col-recipe { white-space: nowrap; min-width: 200px; }
.recipe-plus { margin: 0 4px 0 -2px; color: var(--muted); font-weight: 600; }
.status-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.st-base { background: #f1efe8; color: var(--muted); border: 1px solid var(--line); }
.st-missing, .st-atomic { background: #f4e6e6; color: #a33; }
.st-toobig { background: #fbe7cf; color: #9a6215; }
.forge-why { display: block; margin-top: 3px; font-size: 12px; color: var(--muted); }

/* the IDC that positions the parts — 加 is ⿰力口, 另 is ⿱口力 */
.recipe-op {
  display: inline-block;
  margin-right: 6px;
  font-size: 20px;
  line-height: 1.2;
  color: var(--muted);
  cursor: help;
}
.col-layout { width: 90px; }
.layout-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: #f1efe8;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  cursor: help;
}
.overlap-tag {
  margin-left: 5px;
  font-size: 15px;
  color: #9a6215;
  cursor: help;
}
.lay-LR { background: #e6eef7; border-color: #cfdcea; color: #2f5d8a; }
.lay-TB { background: #eee7f5; border-color: #ddd0ea; color: #6a4a8a; }
.lay-ENC { background: #e3efe4; border-color: #cfe2d3; color: #1f7a44; }

.col-alts { white-space: nowrap; min-width: 280px; }
.alt-recipes {
  font-size: 15px;
  color: var(--muted);
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif;
}
.col-note { white-space: nowrap; min-width: 200px; }
.col-desc-count { width: 100px; text-align: center; font-variant-numeric: tabular-nums; }
.col-desc-list { white-space: nowrap; min-width: 240px; }
.collide-tag { font-size: 12px; color: #9a6215; font-weight: 600; }
.forge-summary { font-size: 12px; color: var(--muted); align-self: center; }

/* ---- location assigner ---- */
.loc-input {
  flex: 0 1 240px;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 12px;
  font: inherit;
  background: var(--panel);
  color: var(--ink);
}
.loc-input:focus-visible { outline: 2px solid var(--accent); border-color: var(--accent); }

/* Mobile-first: palette stacks above the bins; side-by-side on wide screens. */
.loc-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: start;
}
.palette {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  max-height: 44vh;
  overflow: auto;
  box-shadow: var(--shadow);
}
@media (min-width: 760px) {
  .loc-layout { grid-template-columns: 264px 1fr; gap: 16px; }
  .palette { position: sticky; top: 8px; max-height: 76vh; }
}
.palette-head { font-weight: 700; font-size: 14px; margin-bottom: 2px; }
.palette-note { display: block; font-weight: 400; font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.pal-group-title {
  margin: 12px 0 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--muted);
}
.chip-zone { display: flex; flex-wrap: wrap; gap: 6px; min-height: 20px; }

.chip {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  padding: 4px 10px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: #f6f4ee;
  font-size: 19px;
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif;
  line-height: 1.15;
  cursor: grab;
  user-select: none;
}
.chip:active { cursor: grabbing; }
.chip.dragging { opacity: .4; }
/* chips are viewers by default (click = member list); Move mode makes them draggable */
.loc-layout:not(.move-mode) .chip { cursor: pointer; }
.loc-layout:not(.move-mode) .chip:active { cursor: pointer; }
.loc-layout:not(.move-mode) .chip:hover { border-color: var(--accent); }
.chip-label { line-height: 1; }
.chip-count {
  font-size: 10px;
  font-family: sans-serif;
  color: var(--muted);
  align-self: flex-end;
  margin-bottom: 1px;
}
.chip-rad { background: #eef1f6; border-color: #d9dfea; align-items: flex-end; }
.chip-cat {
  background: #e9f2ea;
  border-color: #cfe2d3;
  color: #1f5f3a;
  align-items: flex-end;
  font-weight: 600;
}
/* view-filter toggle buttons (ghost when off, filled when on) */
.btn-toggle.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Move mode switch (Location Radicals): a labelled on/off switch — off is
   plainly grey/left, on slides the knob right and turns red */
.switch {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line); background: var(--panel); color: var(--muted);
  border-radius: 9px; padding: 8px 10px; font: inherit; font-size: 13px; font-weight: 600;
  cursor: pointer; text-align: left;
}
.switch:hover { border-color: var(--accent); }
.switch-label { flex: 1; }
.switch-track {
  flex: none; width: 34px; height: 18px; border-radius: 999px;
  background: #d8d4c8; position: relative; transition: background .15s;
}
.switch-knob {
  position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,.25); transition: left .15s;
}
.switch.active { color: var(--accent); border-color: var(--accent); }
.switch.active .switch-track { background: var(--accent); }
.switch.active .switch-knob { left: 18px; }
.palette .loc-move { display: flex; width: 100%; margin-bottom: 10px; }

/* ---- category editor modal ---- */
.modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(20,18,15,.4); }
.modal-box {
  position: relative;
  width: min(560px, 92vw);
  max-height: 82vh;
  overflow: auto;
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: 0 12px 48px rgba(0,0,0,.3);
  padding: 18px 20px 20px;
}
.modal-head { display: flex; align-items: center; }
.modal-head h3 { margin: 0; flex: 1; }
.modal-x {
  border: none; background: transparent; cursor: pointer;
  font-size: 18px; color: var(--muted); padding: 4px 8px; border-radius: 6px;
}
.modal-x:hover { background: #f0e5e5; color: var(--accent); }
.modal-desc { color: var(--muted); font-size: 13px; margin: 4px 0 12px; }
.modal-members {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  min-height: 60px;
  max-height: 40vh;
  overflow: auto;
}
.mem-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 6px 3px 10px;
  border-radius: 8px;
  background: #f1efe8;
  border: 1px solid var(--line);
  font-size: 19px;
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif;
}
.mem-empty { color: var(--muted); font-size: 13px; }
.modal-addrow { display: flex; gap: 8px; margin-top: 12px; }
.modal-addrow input {
  flex: 1; border: 1px solid var(--line); border-radius: 9px; padding: 8px 12px;
  font: inherit; background: var(--panel); color: var(--ink);
}
.modal-addrow input:focus-visible { outline: 2px solid var(--accent); border-color: var(--accent); }
.modal-txtrow { display: flex; gap: 8px; margin-top: 10px; }
.modal-actions { justify-content: flex-end; }
#locRemoveBtn { margin-right: auto; }   /* Remove on the left, Back on the right */
.modal-input {
  width: 100%; box-sizing: border-box; border: 1px solid var(--line); border-radius: 9px;
  padding: 9px 12px; background: var(--panel); color: var(--ink);
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif; font-size: 18px;
}
.modal-input:focus-visible { outline: 2px solid var(--accent); border-color: var(--accent); }
.modal-textarea {
  width: 100%; box-sizing: border-box; resize: vertical; min-height: 68px;
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  background: var(--panel); color: var(--ink);
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif; font-size: 19px; line-height: 1.5;
}
.modal-textarea:focus-visible { outline: 2px solid var(--accent); border-color: var(--accent); }

.bins {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 12px;
}
.bin {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px 10px;
  min-height: 84px;
  transition: border-color .12s, background .12s;
}
.bin.exile { background: #fbf4ee; border-color: #ecd9c6; }
.bin-head { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.bin-name {
  font-weight: 700; font-size: 15px; font-family: inherit; text-align: left;
  border: none; background: transparent; color: var(--ink); cursor: pointer;
  padding: 3px 7px; margin: -3px -1px -3px -7px; border-radius: 7px;
  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.bin-name:hover { background: #f0ece3; color: var(--accent); }
.bin-name:focus-visible { outline: 2px solid var(--accent); }
.bin-count {
  margin-left: auto;
  min-width: 20px;
  text-align: center;
  padding: 0 7px;
  border-radius: 20px;
  background: #eceae4;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.bin-body { display: flex; flex-wrap: wrap; gap: 6px; min-height: 34px; }

.drop-zone.drag-over { border-color: var(--accent); background: #fbf1f1; }
.palette.drop-zone.drag-over { background: #fbf1f1; }

/* ---- default setting ---- */
.cfg {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-top: 14px;
  box-shadow: var(--shadow);
}
.cfg-head { margin-bottom: 8px; }
.cfg-head h3 { margin: 0 0 2px; font-size: 16px; }
.cfg-note { color: var(--muted); font-size: 12.5px; }
.cfg-text {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fbfaf7;
  color: var(--ink);
  font-family: "Noto Serif TC", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: 15px;
  line-height: 1.7;
  tab-size: 8;
}
.cfg-text:focus-visible { outline: 2px solid var(--accent); border-color: var(--accent); }
.cfg-bar { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.cfg-reset { margin-top: 16px; }

/* ---- placement ---- */
.place-bar { display: flex; align-items: center; gap: 12px; margin: 4px 0 14px; flex-wrap: wrap; }
.place-loc { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; }
.place-loc select {
  font: inherit; padding: 7px 10px; border: 1px solid var(--line);
  border-radius: 9px; background: var(--panel); color: var(--ink);
}
.place-body { display: flex; flex-direction: column; gap: 14px; }

.pl-stage {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  overflow-x: auto;   /* narrow screens: the 6-column row scrolls sideways */
}
.pl-stage-head {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; font-weight: 700;
  background: #f1efe8; border-bottom: 1px solid var(--line);
  min-width: 520px;   /* span the scrollable row width on narrow screens */
}
.pl-stage-head span { flex: 1; }
.pl-stage-del {
  border: none; background: transparent; color: var(--muted);
  cursor: pointer; font-size: 13px; padding: 2px 6px; border-radius: 6px;
}
.pl-stage-del:hover { background: #f0e5e5; color: var(--accent); }

.pl-substage-add-bottom {
  display: block;
  width: calc(100% - 24px);
  margin: 12px;
  padding: 8px 12px;
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-family: inherit;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  box-sizing: border-box;
  min-width: 496px; /* aligns nicely with the 520px min-width table */
}
.pl-substage-add-bottom:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #faf9f6;
}

.pl-substages-list {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  padding: 0 12px 12px; font-size: 11px; color: var(--muted);
}
.pl-substage-del-btn {
  border: 1px solid var(--line); background: #fdfaf6; color: var(--accent);
  border-radius: 5px; padding: 2px 6px; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; gap: 4px;
}
.pl-substage-del-btn:hover {
  background: #f5e6e6; border-color: var(--accent);
}
.pl-substage-del-btn::after {
  content: "✕"; font-size: 9px; margin-left: 2px;
}

/* Complete-view stage selector: pills to show/hide individual stages */
.stage-sel { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 0 0 12px; }
.stage-pill {
  border: 1px solid var(--line); background: var(--panel); border-radius: 999px;
  padding: 5px 13px; font: inherit; font-size: 12.5px; font-weight: 600;
  color: var(--muted); cursor: pointer; white-space: nowrap;
}
.stage-pill:hover { border-color: var(--accent); color: var(--accent); }
.stage-pill.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.stage-pill.stage-tool { border-style: dashed; }

.pl-table { display: flex; flex-direction: column; min-width: 520px; }
.pl-row {
  display: grid;
  grid-template-columns: 3fr 2fr 1.4fr 1.6fr 1.4fr 3.4fr;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--line);
  cursor: grab;
}
@media (min-width: 720px) { .pl-row { padding: 6px 14px; } }
.pl-row:last-child { border-bottom: none; }
.pl-row:not(.pl-head):hover { background: #faf7f2; }
.pl-row.dragging { opacity: .4; }
/* thicker rule where the sub-stage ticks over (every 10 words) */
.pl-row.substage-sep { border-top: 2px solid #c9c2b2; }
/* flagged words (Trad/Simp radical differs, stroke Δ ≥ threshold, or merged simplification) */
.pl-row.flagged { box-shadow: inset 3px 0 0 var(--flag); }
.pl-row.flagged .pl-word { color: var(--flag); }
/* duplicated words (two trad sources share one simp form) — purple wins over amber */
.pl-row.dup { box-shadow: inset 3px 0 0 var(--dup); }
.pl-row.dup .pl-word { color: var(--dup); }
/* moved words (in Movement_List) — dark gray wins over purple/amber */
.pl-row.moved { box-shadow: inset 3px 0 0 var(--moved); }
.pl-row.moved .pl-word { color: var(--moved); font-weight: bold; }
/* the view-filter toggles light up in their frame colours (purple / amber / dark gray) */
.dup-toggle.active { background: var(--dup); border-color: var(--dup); color: #fff; }
.flag-toggle.active { background: var(--flag); border-color: var(--flag); color: #fff; }
.moved-toggle.active { background: var(--moved); border-color: var(--moved); color: #fff; }
.panel-filters { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.panel-filters-label { font-size: 13px; font-weight: 600; color: var(--muted); margin-right: 4px; }
.pl-row span { font-variant-numeric: tabular-nums; }
.pl-word { font-size: 20px; font-family: "Noto Serif TC", "Microsoft JhengHei", serif; }
.pl-head {
  cursor: default; background: #faf9f6; font-size: 11px;
  text-transform: uppercase; letter-spacing: .5px; color: var(--muted); font-weight: 600;
}
.pl-head span { font-variant-numeric: normal; }
.drop-stage.drag-over { outline: 2px dashed var(--accent); outline-offset: -2px; }

/* Simple view board. Mobile-first: the location selector is a horizontally
   swipeable pill row above the boards; on wide screens it becomes a sticky
   left sidebar. */
.place-board { display: flex; flex-direction: column; gap: 12px; align-items: stretch; }
.pb-sel {
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--panel); overflow: hidden;
}
.pb-sel-tools { display: flex; gap: 6px; padding: 8px; border-bottom: 1px solid var(--line); background: #f1efe8; }
.pb-sel-btn {
  flex: 1; border: 1px solid var(--line); background: var(--panel); border-radius: 7px;
  padding: 7px; font: inherit; font-size: 12px; font-weight: 600; cursor: pointer; color: var(--muted);
}
.pb-sel-btn:hover { border-color: var(--accent); color: var(--accent); }
.pb-sel-list {
  display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch;
  gap: 4px; padding: 6px;
}
.pb-sel-item {
  display: flex; align-items: center; gap: 8px; flex: none; border: none; background: transparent;
  border-radius: 8px; padding: 8px 10px; cursor: pointer; font: inherit; text-align: left;
  white-space: nowrap;
}
@media (min-width: 900px) {
  .place-board { flex-direction: row; gap: 14px; align-items: flex-start; }
  .pb-sel { flex: 0 0 210px; position: sticky; top: 12px; }
  .pb-sel-list { display: block; max-height: 68vh; overflow: auto; padding: 5px; }
  .pb-sel-item { display: flex; width: 100%; white-space: normal; padding: 6px 8px; }
}
.pb-sel-item:hover { background: #f1ede4; }
.pb-sel-item.on { background: #f6efe9; }
.pb-sel-check {
  flex: none; width: 17px; height: 17px; border: 1px solid var(--line); border-radius: 5px;
  display: inline-flex; align-items: center; justify-content: center; font-size: 11px; color: transparent;
}
.pb-sel-item.on .pb-sel-check { background: var(--accent); color: #fff; border-color: var(--accent); }
.pb-sel-name {
  flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif; font-size: 15px;
}
.pb-sel-cnt { flex: none; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.pb-grid {
  flex: 1; min-width: 0; display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; align-items: start;
}
.pb-grid-empty { grid-column: 1 / -1; color: var(--muted); padding: 24px 8px; }
.pb-loc { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); overflow: hidden; }
/* 備用區 staging area: a holding pen for words whose placement is undecided */
.pb-loc.pb-staging { border-style: dashed; border-color: #d9b98c; background: #fbf7ee; }
.pb-loc.pb-staging .pb-loc-title { background: #f5edda; }
.pb-sel-item.pb-staging-item .pb-sel-name { font-style: italic; }
.pb-loc-title {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 6px 8px 6px 12px; font-weight: 600; background: #f1efe8; border-bottom: 1px solid var(--line);
}
.pb-loc-name {
  font-family: "Noto Serif TC", "Microsoft JhengHei", serif;
  min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.pb-loc-tools { flex: none; display: flex; align-items: center; gap: 6px; }
.pb-add-stage {
  flex: none; border: 1px solid var(--line); background: var(--panel); color: var(--muted);
  border-radius: 7px; padding: 3px 9px; font: inherit; font-size: 11px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
}
.pb-add-stage:hover { border-color: var(--accent); color: var(--accent); }
.pb-boxes { padding: 8px; display: flex; flex-direction: column; gap: 8px; }
.pb-box { border: 1px solid var(--line); border-radius: 9px; padding: 6px 6px 7px; }
.pb-box.pb-empty { border-style: dashed; }
.pb-box-title {
  display: flex; align-items: center; justify-content: space-between; gap: 6px;
  font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; margin: 0 2px 5px;
}
.pb-del-stage {
  flex: none; border: none; background: transparent; color: var(--muted); cursor: pointer;
  font-size: 10px; line-height: 1; padding: 1px 5px; border-radius: 5px;
  font-variant-numeric: normal;
}
.pb-del-stage:hover { background: #f0e5e5; color: var(--accent); }

.pb-del-substage {
  flex: none; border: none; background: transparent; color: var(--muted); cursor: pointer;
  font-size: 10px; line-height: 1; padding: 1px 5px; border-radius: 5px;
  font-variant-numeric: normal;
}
.pb-del-substage:hover { background: #f0e5e5; color: var(--accent); }

.pb-add-substage {
  border: 1px dashed var(--line); border-radius: 9px; padding: 12px;
  display: flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; color: var(--muted); font-size: 12px; font-weight: 600;
  background: transparent; width: 100%; transition: all 0.2s ease;
}
.pb-add-substage:hover {
  border-color: var(--accent); color: var(--accent); background: #faf9f6;
}
.pb-chips { display: flex; flex-wrap: wrap; gap: 6px; min-height: 40px; }
.pb-chip {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px;
  background: #faf9f6; cursor: grab;
}
.pb-chip:hover { border-color: var(--accent); }
.pb-chip .pb-w { font-family: "Noto Serif TC", "Microsoft JhengHei", serif; font-size: 23px; line-height: 1; }
.pb-chip .pb-n {
  position: absolute; right: 1px; bottom: 0; font-size: 9px; color: var(--muted);
  background: var(--panel); border-radius: 4px; padding: 0 2px; font-variant-numeric: tabular-nums;
}
.pb-chip .pb-r {
  position: absolute; right: 1px; top: 0; font-size: 9px; color: var(--muted);
  background: var(--panel); border-radius: 4px; padding: 0 2px; line-height: 1;
}
.pb-chip .pb-dot {
  position: absolute; left: 4px; top: 4px; width: 6px; height: 6px; border-radius: 50%;
}
.pb-chip .pb-dot.base {
  background-color: #cbd5e1;
}
.pb-chip .pb-dot.forgeable {
  background-color: var(--found);
}
.pb-chip .pb-dot.blocked {
  background-color: var(--accent);
}
.pb-chip.moved .pb-dot.base {
  background-color: #9ca3af;
}
.pb-chip.dragging { opacity: .4; }
/* flagged words get an amber frame (Trad/Simp radical differs, or stroke Δ ≥ threshold) */
.pb-chip.flagged { border-color: var(--flag); box-shadow: inset 0 0 0 1px var(--flag); }
/* duplicated words (shared simp form) get a purple frame — wins over amber */
.pb-chip.dup { border-color: var(--dup); box-shadow: inset 0 0 0 1px var(--dup); }
/* moved words (in Movement_List) get a dark gray background and white word — wins over amber and purple */
.pb-chip.moved {
  background: var(--moved);
  border-color: var(--moved);
}
.pb-chip.moved .pb-w {
  color: #ffffff;
}
.pb-chip.moved .pb-n {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.25);
}
.pb-chip.moved .pb-r {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.25);
}
.pb-box.drag-over { outline: 2px dashed var(--accent); outline-offset: -2px; background: #f3efe7; }

/* ---- footer ---- */
.foot { margin-top: 28px; }
.meta-note { color: var(--muted); font-size: 12.5px; margin: 4px 0; }

/* ---- tap-to-move (touch alternative to drag-and-drop) ---- */
.move-bar {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: 14px; z-index: 45;
  display: flex; align-items: center; gap: 10px;
  background: #2f3540; color: #fff;
  border-radius: 12px; padding: 9px 10px 9px 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,.35);
  max-width: calc(100vw - 20px);
}
.move-bar-text { font-size: 13.5px; min-width: 0; }
.move-bar-text .mv-word { font-family: "Noto Serif TC", "Microsoft JhengHei", serif; font-size: 17px; }
.move-bar .btn { padding: 6px 12px; font-size: 13px; background: transparent; border-color: rgba(255,255,255,.45); color: #fff; }
.move-bar .btn:hover { border-color: #fff; }

.tap-selected { outline: 3px solid var(--accent); outline-offset: 1px; }
/* while a move is armed, hint at the valid drop targets on that surface */
.loc-layout.tap-moving .drop-zone { border-color: var(--accent); border-style: dashed; }
.place-board.tap-moving .pb-box { border-color: var(--accent); border-style: dashed; }
.place-body.tap-moving .pl-stage { outline: 2px dashed var(--accent); outline-offset: -2px; }

/* ---- touch ergonomics ---- */
@media (pointer: coarse) {
  .row-del { padding: 8px 10px; }
  .row-del svg { width: 17px; height: 17px; }
  .pb-chip { width: 48px; height: 48px; }
  .chip { padding: 7px 12px; }
  .seg { padding: 10px 15px; }
  .bin-name { padding: 6px 8px; }
  .pb-add-stage { padding: 6px 11px; font-size: 12px; }
  .pb-del-stage { padding: 5px 9px; font-size: 11px; }
  .pl-stage-del { padding: 6px 10px; }
  .modal-x { font-size: 20px; padding: 8px 12px; }
  .cm-check { padding: 7px 8px; }
}

/* ---- small screens ---- */
@media (max-width: 719px) {
  .statusbar { gap: 12px; padding: 10px 14px; }
  .panel-tools .btn { flex: 1 1 auto; }
  .panel-tools .spacer { display: none; }   /* controls fill full rows instead */
  .flag-group { flex: 1 1 auto; }
  .flag-group .btn { flex: 1 1 auto; }
  .col-menu { max-width: calc(100vw - 16px); max-height: 70vh; overflow: auto; }
  .modal-box { width: calc(100vw - 24px); padding: 16px 14px; }
  /* 16px inputs stop iOS Safari from auto-zooming on focus */
  input[type="text"], input[type="number"], select, textarea { font-size: 16px; }
}

/* Make bins draggable in Move mode */
.loc-layout.move-mode .bin { cursor: grab; }
.loc-layout.move-mode .bin:active { cursor: grabbing; }
.loc-layout.move-mode .bin.dragging { opacity: .4; }