:root {
  --bg: #ece8e1;
  --panel: #fbfaf7;
  --line: #e2ddd4;
  --ink: #2f2c28;
  --muted: #8a847a;
  --accent: #8b6b4a;
  --accent-ink: #fff;
  --hot: #d0743c;
  --chip: #f1ede6;
  --shadow: 0 8px 28px rgba(50, 40, 25, 0.12), 0 1px 3px rgba(50, 40, 25, 0.08);
  --lib-w: 280px;
  --top-h: 56px;
  font-family: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  color: var(--ink);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--bg); }
button { font: inherit; color: inherit; cursor: pointer; }
input { font: inherit; color: inherit; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
svg circle { fill: currentColor; stroke: none; }

/* 頂欄 */
.topbar {
  position: fixed; inset: 0 0 auto 0; height: var(--top-h); z-index: 20;
  display: flex; align-items: center; gap: 14px; padding: 0 14px;
  background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; width: calc(var(--lib-w) - 28px); }
.brand h1 { margin: 0; font-size: 15px; font-weight: 600; letter-spacing: .04em; white-space: nowrap; }
.brand p { margin: 1px 0 0; font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.logo { width: 26px; height: 26px; flex: none; border: 3px solid #56575a; border-radius: 4px; background: linear-gradient(#56575a, #56575a) 55% 0 / 3px 60% no-repeat, linear-gradient(#56575a, #56575a) 100% 55% / 45% 3px no-repeat, #f3f0ea; }
.seg { display: inline-flex; background: var(--chip); border-radius: 9px; padding: 3px; gap: 2px; }
.seg button { border: 0; background: transparent; padding: 6px 14px; border-radius: 7px; font-size: 13.5px; color: var(--muted); }
.seg button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0, 0, 0, .1); font-weight: 600; }
.seg.small button { padding: 4px 10px; font-size: 12.5px; }
.tools { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.icon-btn { border: 0; background: transparent; width: 36px; height: 36px; border-radius: 8px; display: grid; place-items: center; color: #55504a; }
.icon-btn:hover:not(:disabled) { background: var(--chip); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.btn { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 6px 12px; font-size: 13px; }
.btn:hover { border-color: #cfc8bc; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { color: #b0412e; }
.link { border: 0; background: none; color: var(--accent); font-size: 12.5px; padding: 2px 4px; }

.more { position: relative; }
.more .menu {
  position: absolute; right: 0; top: 42px; min-width: 190px; padding: 6px; display: none;
  background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow);
}
.more-open .more .menu { display: block; }
.menu button { display: block; width: 100%; text-align: left; border: 0; background: none; padding: 8px 10px; border-radius: 6px; font-size: 13.5px; }
.menu button:hover { background: var(--chip); }
.menu .danger { color: #b0412e; }
.menu hr { border: 0; border-top: 1px solid var(--line); margin: 4px 2px; }

/* 家具庫 */
.library {
  position: fixed; top: var(--top-h); bottom: 0; left: 0; width: var(--lib-w); z-index: 15;
  background: var(--panel); border-right: 1px solid var(--line);
  display: flex; flex-direction: column;
}
.library h2 { font-size: 12px; font-weight: 600; color: var(--muted); letter-spacing: .08em; margin: 0 0 8px; }
.lib-head { padding: 14px 14px 8px; border-bottom: 1px solid var(--line); }
#libSearch { width: 100%; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 7px 10px; font-size: 13px; outline: none; }
#libSearch:focus { border-color: var(--accent); }
.cat-tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.cat-tabs button { border: 0; background: var(--chip); border-radius: 99px; padding: 3px 10px; font-size: 12px; color: #6b655c; }
.cat-tabs button.on { background: var(--ink); color: #fff; }
.lib-grid { flex: 1; overflow-y: auto; padding: 10px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; align-content: start; }
.lib-item {
  border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 6px 6px 8px;
  display: flex; flex-direction: column; align-items: center; gap: 2px; text-align: center;
  transition: border-color .15s, transform .15s;
}
.lib-item:hover { border-color: var(--accent); transform: translateY(-1px); }
.lib-item:active { transform: scale(.97); }
.lib-item img { width: 100%; aspect-ratio: 1; object-fit: contain; pointer-events: none; }
.lib-item span { font-size: 12.5px; line-height: 1.25; }
.lib-item small { font-size: 10.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.rooms { border-top: 1px solid var(--line); padding: 12px 14px 14px; max-height: 34%; overflow-y: auto; }
.room-item { display: flex; width: 100%; justify-content: space-between; align-items: baseline; border: 0; background: none; padding: 6px 8px; border-radius: 6px; font-size: 13px; }
.room-item:hover { background: var(--chip); }
.room-item small { color: var(--muted); font-variant-numeric: tabular-nums; }

/* 畫面 */
#viewport { position: fixed; top: var(--top-h); left: var(--lib-w); right: 0; bottom: 0; overflow: hidden; }
#viewport canvas { display: block; touch-action: none; }
#viewport.hover-item canvas { cursor: grab; }
#viewport.dragging canvas { cursor: grabbing; }
.labels { position: absolute; inset: 0; pointer-events: none; }
.room-label { text-align: center; pointer-events: none; text-shadow: 0 0 3px #fff, 0 0 6px #fff, 0 0 10px rgba(255,255,255,.8); }
.room-label b { display: block; font-size: 13px; font-weight: 600; color: #3b3732; letter-spacing: .05em; }
.room-label span { display: block; font-size: 10.5px; color: #6f685e; font-variant-numeric: tabular-nums; }
.room-label.sub b { font-size: 12px; font-weight: 500; color: #6f685e; }
body[data-mode="walk"] .labels, body[data-mode="eye"] .labels { display: none; }

.view-opts {
  position: absolute; top: 12px; left: 12px; z-index: 5; display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  background: rgba(251, 250, 247, .92); backdrop-filter: blur(6px); border: 1px solid var(--line); border-radius: 11px; padding: 5px 10px 5px 5px; box-shadow: var(--shadow);
}
.chk { display: inline-flex; align-items: center; gap: 4px; font-size: 12.5px; color: #55504a; user-select: none; cursor: pointer; }
.chk input { accent-color: var(--accent); margin: 0; }
.coords { position: absolute; top: 60px; left: 50%; transform: translateX(-50%); background: rgba(47,44,40,.85); color: #fff; font-size: 12px; padding: 4px 10px; border-radius: 99px; font-variant-numeric: tabular-nums; pointer-events: none; }
.hint { position: absolute; bottom: 12px; left: 12px; font-size: 12px; color: #6f685e; background: rgba(251,250,247,.85); padding: 5px 10px; border-radius: 8px; pointer-events: none; }
.hint span { display: none; }
body[data-mode="3d"] .hint [data-m="3d"], body[data-mode="top"] .hint [data-m="top"], body[data-mode="eye"] .hint [data-m="eye"], body[data-mode="walk"] .hint [data-m="walk"] { display: inline; }
.walk-pad { display: none; position: absolute; right: 18px; bottom: 18px; grid-template-areas: ". u ." "l d r"; gap: 6px; }
.walk-pad button { width: 54px; height: 54px; border-radius: 14px; border: 1px solid var(--line); background: rgba(255,255,255,.88); font-size: 18px; color: #55504a; touch-action: none; user-select: none; -webkit-user-select: none; }
.walk-pad button:active { background: var(--chip); }
@media (pointer: coarse) { body[data-mode="walk"] .walk-pad { display: grid; } }
body[data-mode="walk"] .view-opts .chk:has(#tglPlan), body[data-mode="walk"] .view-opts .chk:has(#tglSnap) { display: none; }

/* 屬性面板 */
.props {
  position: fixed; right: 14px; top: calc(var(--top-h) + 12px); width: 272px; z-index: 16;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow);
  transform: translateX(calc(100% + 30px)); transition: transform .22s ease;
}
.has-sel .props { transform: none; }
body[data-mode="walk"] .props { display: none; }
.props-head { display: flex; justify-content: space-between; align-items: flex-start; padding: 12px 10px 8px 14px; border-bottom: 1px solid var(--line); }
.name-input { border: 1px solid transparent; background: none; font-size: 15px; font-weight: 600; padding: 2px 4px; margin-left: -5px; width: 200px; border-radius: 6px; outline: none; }
.name-input:hover { border-color: var(--line); }
.name-input:focus { border-color: var(--accent); background: #fff; }
.props-head small { display: block; color: var(--muted); font-size: 11.5px; }
.props-body { padding: 12px 14px 14px; display: grid; gap: 12px; }
.dims { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.dims label { position: relative; display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.dims input { width: 100%; border: 1px solid var(--line); background: #fff; border-radius: 7px; padding: 6px 28px 6px 8px; font-size: 13.5px; font-variant-numeric: tabular-nums; outline: none; }
.dims input:focus { border-color: var(--accent); }
.dims i { position: absolute; right: 8px; font-style: normal; font-size: 11px; color: var(--muted); pointer-events: none; }
.row { display: flex; align-items: center; gap: 8px; }
.lbl { font-size: 12px; color: var(--muted); flex: none; }
#pRot { flex: 1; accent-color: var(--accent); }
#pRotVal { width: 36px; text-align: right; font-size: 12.5px; font-variant-numeric: tabular-nums; }
input[type="color"] { width: 34px; height: 26px; border: 1px solid var(--line); border-radius: 6px; padding: 1px; background: #fff; cursor: pointer; }
.c2 { display: inline-flex; align-items: center; gap: 6px; }
.c2[hidden] { display: none; }
.actions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.actions .btn { padding: 7px 0; font-size: 12.5px; }

/* 對話框 */
.dlg { border: 0; border-radius: 14px; padding: 20px 22px 16px; width: min(480px, calc(100vw - 32px)); box-shadow: var(--shadow); background: var(--panel); color: var(--ink); }
.dlg.wide { width: min(1000px, calc(100vw - 32px)); }
.dlg::backdrop { background: rgba(40, 34, 26, .35); }
.dlg h3 { margin: 0 0 10px; font-size: 16px; }
.dlg p { font-size: 13.5px; line-height: 1.6; color: #55504a; margin: 0 0 12px; }
.dlg .note { font-size: 12px; color: var(--muted); margin-top: 12px; }
.share-row { display: flex; gap: 8px; }
.share-row input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; font-size: 12.5px; background: #fff; }
.dlg-foot { display: flex; justify-content: flex-end; margin-top: 14px; }
.keys { width: 100%; border-collapse: collapse; font-size: 13px; }
.keys td { padding: 6px 4px; border-bottom: 1px solid var(--line); vertical-align: top; }
.keys td:first-child { white-space: nowrap; color: #55504a; width: 40%; }
kbd { font-family: inherit; font-size: 11.5px; background: #fff; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; padding: 0 5px; }
.ref-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; max-height: 70vh; overflow: auto; }
.ref-imgs figure { margin: 0; }
.ref-imgs img { width: 100%; border-radius: 8px; border: 1px solid var(--line); background: #fff; }
.ref-imgs figcaption { font-size: 12px; color: var(--muted); margin-top: 4px; text-align: center; }

.toast { position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; z-index: 50;
  background: rgba(47,44,40,.92); color: #fff; font-size: 13px; padding: 9px 16px; border-radius: 99px; transition: .25s; max-width: calc(100vw - 32px); text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.loading { position: fixed; inset: 0; display: grid; place-content: center; justify-items: center; gap: 12px; background: var(--bg); z-index: 60; font-size: 13px; color: var(--muted); transition: opacity .4s; }
.loading span { width: 30px; height: 30px; border: 3px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
.ready .loading { opacity: 0; pointer-events: none; }
@keyframes spin { to { transform: rotate(360deg); } }

.scrim { display: none; }
.only-mobile { display: none; }

/* 手機 / 窄螢幕 */
@media (max-width: 820px) {
  :root { --top-h: 52px; }
  .only-mobile { display: grid; }
  .only-desktop { display: none; }
  .topbar { gap: 6px; padding: 0 6px; }
  .brand { width: auto; }
  .brand p { display: none; }
  .brand h1 { font-size: 14px; }
  .logo { display: none; }
  .seg button { padding: 6px 7px; font-size: 12.5px; }
  #btnFit, #btnRedo { display: none; }
  #btnShare { padding: 6px 10px; }
  .library { width: min(86vw, 320px); transform: translateX(-102%); transition: transform .25s ease; z-index: 30; box-shadow: var(--shadow); }
  .lib-open .library { transform: none; }
  .lib-open .scrim { display: block; position: fixed; inset: var(--top-h) 0 0 0; background: rgba(40,34,26,.3); z-index: 25; }
  .lib-grid { grid-template-columns: 1fr 1fr 1fr; }
  #viewport { left: 0; }
  .view-opts { top: 8px; left: 8px; right: 8px; gap: 6px 10px; padding: 4px 8px 4px 4px; }
  .props { left: 0; right: 0; top: auto; bottom: 0; width: auto; border-radius: 16px 16px 0 0; transform: translateY(105%); padding-bottom: env(safe-area-inset-bottom); }
  .has-sel .props { transform: none; }
  .props-body { gap: 10px; }
  .dims { grid-template-columns: repeat(4, 1fr); }
  .dims label { flex-direction: column; align-items: stretch; gap: 2px; }
  .dims input { padding: 6px; font-size: 14px; }
  .dims i { display: none; }
  .ref-imgs { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { display: none; }
}

/* 操作手冊 */
.guide {
  position: fixed; right: 16px; bottom: 16px; z-index: 40; width: 400px; max-height: min(600px, calc(100vh - var(--top-h) - 32px));
  display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 18px 50px rgba(50, 40, 25, .22), 0 2px 6px rgba(50, 40, 25, .1);
  opacity: 0; transform: translateY(12px) scale(.96); transform-origin: bottom right; transition: opacity .2s, transform .22s ease;
}
.guide.show { opacity: 1; transform: none; }
.guide[hidden] { display: none; }
.guide-head { display: flex; justify-content: space-between; align-items: center; padding: 12px 8px 4px 16px; }
.guide-title { display: flex; align-items: center; gap: 8px; }
.guide-title h3 { margin: 0; font-size: 16px; }
.guide-ico { font-size: 18px; }
.guide-tabs { display: flex; gap: 4px; padding: 6px 12px 10px; overflow-x: auto; scrollbar-width: none; border-bottom: 1px solid var(--line); }
.guide-tabs::-webkit-scrollbar { display: none; }
.guide-tabs button { flex: none; border: 0; background: var(--chip); border-radius: 99px; padding: 4px 11px; font-size: 12.5px; color: #6b655c; }
.guide-tabs button.on { background: var(--ink); color: #fff; }
.guide-body { flex: 1; overflow-y: auto; padding: 12px 18px 6px; font-size: 13.5px; line-height: 1.65; color: #45413b; }
.guide-body article { display: none; }
.guide-body article.on { display: block; }
.guide-body h4 { margin: 12px 0 4px; font-size: 13.5px; color: var(--ink); }
.guide-body h4:first-child { margin-top: 0; }
.guide-body p { margin: 0 0 8px; }
.guide-body ul, .guide-body ol { margin: 0 0 8px; padding-left: 20px; }
.guide-body li { margin-bottom: 4px; }
.guide-body .lead { font-size: 14px; color: var(--ink); }
.guide-body .steps li::marker { color: var(--accent); font-weight: 700; }
.guide-body .tip { background: #f3ece2; border-left: 3px solid var(--accent); padding: 7px 10px; border-radius: 0 8px 8px 0; font-size: 12.5px; }
.guide-body .note { font-size: 12px; color: var(--muted); margin-top: 10px; }
.guide-foot { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px 12px; border-top: 1px solid var(--line); }
.guide-foot .btn:disabled { opacity: .4; cursor: default; }
.guide-page { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.guide-pill {
  position: fixed; right: 16px; bottom: 16px; z-index: 35; display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); background: var(--panel); border-radius: 99px; padding: 8px 14px 8px 11px; box-shadow: var(--shadow); font-size: 13px;
  animation: pillIn .25s ease;
}
.guide-pill:hover { border-color: var(--accent); }
.guide-pill[hidden] { display: none; }
.guide-pill b { font-weight: 600; }
@keyframes pillIn { from { opacity: 0; transform: scale(.8); } }
body[data-mode="walk"] .guide-pill { bottom: 150px; }
@media (max-width: 820px) {
  .guide { left: 8px; right: 8px; bottom: 8px; width: auto; max-height: 62vh; transform-origin: bottom center; padding-bottom: env(safe-area-inset-bottom); }
  .guide-pill { right: auto; left: 10px; bottom: 12px; padding: 7px 12px 7px 9px; }
  .guide-pill b { font-size: 12.5px; }
  .has-sel .guide-pill { display: none; }
  body[data-mode="walk"] .guide-pill { bottom: 12px; }
}

/* 方案 */
.plan-btn { display: inline-flex; align-items: center; gap: 7px; padding: 4px 10px 4px 8px; margin-right: 2px; max-width: 220px; }
.plan-btn svg { width: 18px; height: 18px; flex: none; color: var(--accent); }
.plan-btn-txt { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.15; min-width: 0; }
.plan-btn-txt b { font-size: 12.5px; font-weight: 600; }
.plan-btn-txt small { font-size: 10.5px; color: var(--muted); max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.plan-btn-txt small.dirty { color: var(--hot); }
.plan-btn-txt small.clean { color: #5f7f52; }
.plans-dlg { width: min(560px, calc(100vw - 24px)); }
.plan-new { display: flex; gap: 8px; margin-bottom: 14px; }
.plan-new input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font-size: 13.5px; background: #fff; outline: none; }
.plan-new input:focus { border-color: var(--accent); }
.plan-list { display: grid; gap: 8px; max-height: min(55vh, 460px); overflow-y: auto; margin: 0 -4px; padding: 0 4px; }
.plan-item { display: grid; grid-template-columns: 96px 1fr; grid-template-areas: "img meta" "img acts"; gap: 6px 12px; padding: 8px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.plan-item.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.plan-thumb { grid-area: img; width: 96px; height: 60px; border-radius: 7px; background: var(--chip) center / cover no-repeat; align-self: center; }
.plan-meta { grid-area: meta; min-width: 0; }
.plan-meta b { font-size: 14px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.plan-meta small { font-size: 11.5px; color: var(--muted); }
.plan-tag { font-size: 10.5px; font-weight: 600; color: var(--accent); background: #f3ece2; border-radius: 99px; padding: 1px 7px; vertical-align: 2px; }
.plan-acts { grid-area: acts; display: flex; flex-wrap: wrap; gap: 5px; }
.plan-acts .btn { padding: 4px 10px; font-size: 12px; }
.plan-acts .ghost { border-color: transparent; background: none; color: var(--muted); }
.plan-acts .ghost:hover { background: var(--chip); }
.plan-acts .ghost.danger { color: #b0412e; }
.plan-empty { font-size: 13px; color: var(--muted); text-align: center; padding: 22px 10px; border: 1px dashed var(--line); border-radius: 12px; }
@media (max-width: 820px) {
  .plan-btn { padding: 0; width: 36px; height: 36px; justify-content: center; border: 0; background: none; margin: 0; }
  .plan-btn-txt { display: none; }
  .plan-btn svg { width: 20px; height: 20px; }
  .plan-item { grid-template-columns: 72px 1fr; }
  .plan-thumb { width: 72px; height: 48px; }
}

/* 窄螢幕頂欄：四個視角按鈕不換行 */
.seg button, .btn { white-space: nowrap; }
@media (max-width: 820px) {
  .topbar { gap: 4px; }
  .topbar .icon-btn { width: 32px; }
  .seg { padding: 2px; }
  .seg button { padding: 6px 7px; font-size: 12.5px; }
  #btnShare { padding: 6px 9px; font-size: 12.5px; }
  .plan-btn { width: 32px; }
}

/* 手冊固定高度：切換分頁不跳動，分頁列不被擠壓 */
.guide { height: min(560px, calc(100vh - var(--top-h) - 32px)); }
.guide-head, .guide-tabs, .guide-foot { flex: none; }
.guide-body { min-height: 0; }
@media (max-width: 820px) { .guide { height: 62vh; } }
/* 款式選單 */
#pStyleRow[hidden] { display: none; }
#pStyle { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 7px; padding: 5px 6px; font: inherit; font-size: 13px; background: #fff; }
body[data-mode="3d"] .ceil-chk, body[data-mode="top"] .ceil-chk { display: none; }

/* 色票 */
.sw-block { display: flex; align-items: flex-start; gap: 8px; }
.sw-block[hidden] { display: none; }
.sw-block .lbl { padding-top: 2px; width: 26px; }
.swatches { display: flex; flex-wrap: wrap; gap: 5px; }
.sw { width: 20px; height: 20px; border-radius: 50%; border: 1px solid rgba(0, 0, 0, .15); padding: 0; cursor: pointer; transition: transform .12s; }
.sw:hover { transform: scale(1.18); }
@media (max-width: 820px) { .sw { width: 24px; height: 24px; } }

/* 牆面油漆 */
.tool-btn { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 4px 10px; font-size: 12.5px; color: #55504a; }
.tool-btn:hover { border-color: var(--accent); }
.tool-btn.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.paint-panel {
  position: fixed; right: 14px; top: calc(var(--top-h) + 12px); width: 272px; z-index: 17;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow);
  transform: translateX(calc(100% + 30px)); transition: transform .22s ease;
}
.paint-mode .paint-panel { transform: none; }
.paint-mode .props { display: none; }
.paint-mode #viewport canvas { cursor: crosshair; }
.pp-title { font-size: 15px; }
.paint-panel .props-head small { display: block; color: var(--muted); font-size: 11.5px; margin-top: 2px; }
#paintFinish { flex: 1; border: 1px solid var(--line); border-radius: 7px; padding: 5px 6px; font: inherit; font-size: 13px; background: #fff; }
.paint-panel .swatches .sw { width: 24px; height: 24px; }
.sw.on { outline: 2px solid var(--accent); outline-offset: 2px; }
.actions.two { grid-template-columns: 1fr 1fr; }
#paintErase.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.pp-tip { margin: 0; font-size: 11.5px; color: var(--muted); line-height: 1.5; }
@media (max-width: 820px) {
  .paint-panel { left: 0; right: 0; top: auto; bottom: 0; width: auto; border-radius: 16px 16px 0 0; transform: translateY(105%); padding-bottom: env(safe-area-inset-bottom); }
  .paint-mode .paint-panel { transform: none; }
}

#pPhotoRow[hidden], #pPhotoClear[hidden] { display: none; }
#pPhoto { padding: 4px 10px; font-size: 12.5px; }

#pOpenRow[hidden] { display: none; }
#pOpen { flex: 1; accent-color: var(--accent); }
#pOpenVal { width: 36px; text-align: right; font-size: 12.5px; font-variant-numeric: tabular-nums; }

/* 手機移動列：選取家具後先顯示精簡的移動／旋轉按鈕，「尺寸・顏色」才展開完整面板 */
.move-bar { display: none; }
@media (max-width: 820px) {
  :root { --top-h: calc(52px + env(safe-area-inset-top)); }
  .topbar { padding-top: env(safe-area-inset-top); padding-left: max(6px, env(safe-area-inset-left)); padding-right: max(6px, env(safe-area-inset-right)); }
  /* iOS 在輸入框字小於 16px 時會自動放大整頁且不會縮回，統一 16px */
  input, select, textarea { font-size: 16px !important; }
  button, .chk { touch-action: manipulation; }
  /* 畫面選項改成一列，可左右滑 */
  .view-opts { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .view-opts::-webkit-scrollbar { display: none; }
  .view-opts > * { flex: none; }
  .coords { top: 58px; }

  .move-bar {
    display: grid; gap: 8px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 17;
    padding: 10px max(10px, env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
    background: var(--panel); border-top: 1px solid var(--line); border-radius: 16px 16px 0 0; box-shadow: var(--shadow);
    transform: translateY(110%); transition: transform .22s ease;
  }
  .has-sel .move-bar { transform: none; }
  .props-open .move-bar, body[data-mode="walk"] .move-bar { transform: translateY(110%); }
  .mb-head { display: flex; align-items: center; gap: 6px; min-width: 0; }
  .mb-head b { flex: 1; min-width: 0; font-size: 14.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .mb-head .btn { padding: 6px 10px; font-size: 13px; }
  .mb-pad { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
  .mb-btn { height: 48px; border: 1px solid var(--line); background: #fff; border-radius: 12px; font-size: 20px; color: #55504a;
    user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; touch-action: none; }
  .mb-btn.small { font-size: 13px; }
  .mb-btn[data-mv] { background: var(--chip); color: var(--ink); }
  .mb-btn:active { background: #e6dfd3; }

  /* 完整屬性面板只在按「尺寸・顏色」後出現，可捲動 */
  .has-sel .props { transform: translateY(105%); }
  .has-sel.props-open .props { transform: none; }
  .props { max-height: 70vh; overflow-y: auto; }
}
@media (max-width: 440px) {
  .brand { display: none; }
}