/* claudesign家 · plan-web · app styles
 * One set of tokens (colour, radius, shadow, control height) and a few components built on them:
 *   .btn (ghost) · .btn.primary · .btn.danger · .hbtn (header) · .segc (segmented choice) · .chip (on/off toggle) · .fbtn (floating icon button)
 *   surfaces: header / side panels (--panel), floating bars and pop-ups (--surface + shadow), sunken fills (--sunken)
 * "On" always looks the same: a segmented choice is a white raised pill on a grey track; a tool or a toggle is accent-tinted; a filled accent button is the one main action. */
:root{
  --bg:#f3f0ea; --paper:#f7f5f0; --panel:#fffefb; --surface:#fff; --sunken:#f4f1eb; --hover:#f0ece5;
  --line:#ece6dc; --line-2:#dcd4c7; --ink:#26231f; --ink-2:#57514a; --muted:#8c8478;
  --accent:#b5653a; --accent-hover:#a0532b; --accent-soft:#f7e9df; --accent-ink:#9a4c22; --teal:#2f5d62;
  --danger:#c0392b; --danger-soft:#fcece9; --ok:#2f7d4f; --warn:#8a5f10; --warn-soft:#fbf3e4;
  --ring:0 0 0 3px rgba(181,101,58,.28);
  --sh-1:0 1px 2px rgba(38,35,31,.07),0 0 0 1px rgba(38,35,31,.05);
  --sh-2:0 6px 18px -6px rgba(38,35,31,.16),0 2px 4px rgba(38,35,31,.05),0 0 0 1px rgba(38,35,31,.05);
  --sh-3:0 22px 50px -12px rgba(38,35,31,.28),0 4px 12px rgba(38,35,31,.07),0 0 0 1px rgba(38,35,31,.06);
  --r:8px; --r-md:10px; --r-lg:14px; --r-xl:18px;
  --h:32px; --hd:52px; --lib-w:252px; --panel-w:320px; --ease:cubic-bezier(.3,.7,.3,1);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);overflow:hidden;overflow:clip;overscroll-behavior:none;touch-action:manipulation;
  -webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased;
  font:13px/1.5 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
button,input,select,textarea{font:inherit;color:inherit}
.app{display:grid;grid-template-rows:var(--hd) minmax(0,1fr) 28px;grid-template-columns:var(--lib-w) minmax(0,1fr) var(--panel-w);height:100vh;height:100dvh;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  -webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
input,textarea{-webkit-user-select:text;user-select:text}
.i{width:18px;height:18px;flex:none;display:inline-block;vertical-align:middle}
.spacer{flex:1}
.muted{color:var(--muted)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
@keyframes popIn{from{opacity:0;transform:translateY(-4px) scale(.98)}to{opacity:1;transform:none}}
@keyframes popUp{from{opacity:0;transform:translateY(4px) scale(.98)}to{opacity:1;transform:none}}
@keyframes dlgIn{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}
@keyframes sheetUp{from{transform:translateY(40px);opacity:.4}to{transform:none;opacity:1}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:var(--h);padding:0 10px;border:0;border-radius:var(--r);background:transparent;
  color:var(--ink-2);font-weight:500;cursor:pointer;white-space:nowrap;transition:background-color .12s,color .12s,box-shadow .12s,border-color .12s}
.btn:hover{background:var(--hover);color:var(--ink)}
.btn:focus-visible,.card:focus-visible,summary:focus-visible{outline:none;box-shadow:var(--ring)}
.btn:disabled,.btn:disabled:hover{opacity:.4;cursor:default;background:transparent}
.btn.on{background:var(--accent-soft);color:var(--accent-ink)}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-hover);color:#fff}
.btn.danger{color:var(--danger)}
.btn.danger:hover{background:var(--danger-soft);color:var(--danger)}
.btn.primary.danger{background:var(--danger);color:#fff}
.btn.primary.danger:hover{background:#a8301f}
/* segmented choice: one of a few, a white pill on a grey track */
.segc{display:inline-flex;align-items:center;gap:2px;padding:2px;border-radius:9px;background:var(--sunken);flex:none}
.segc .btn{min-height:28px;padding:0 11px;border-radius:7px;color:var(--ink-2)}
.segc .btn:hover{background:rgba(255,255,255,.6)}
.segc .btn.on{background:var(--surface);color:var(--ink);box-shadow:var(--sh-1);font-weight:600}
/* on/off toggle */
.chip{min-height:28px;padding:0 12px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2)}
.chip.on{background:var(--accent-soft);border-color:transparent;color:var(--accent-ink)}
/* floating icon button on the canvas */
.fbtn{width:36px;height:36px;min-height:36px;padding:0;border-radius:var(--r-md);background:var(--surface);box-shadow:var(--sh-2);color:var(--ink-2)}
.fbtn:hover{background:var(--surface);color:var(--ink)}
kbd{font:11px/1.5 ui-monospace,Menlo,monospace;background:var(--surface);border:1px solid var(--line-2);border-bottom-width:2px;border-radius:5px;padding:0 5px;color:var(--ink)}

/* ---------- header: library + plan | 2D/3D | history, assistant, panel, more ---------- */
header{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:12px;padding:0 10px;position:relative;z-index:8;
  background:var(--panel);border-bottom:1px solid var(--line)}
.hd-l,.hd-r{display:flex;align-items:center;gap:2px;min-width:0}
.hd-r{justify-content:flex-end;gap:4px}
.hd-c{display:flex;justify-content:center}
.hist-home{display:contents}
.hsep{width:1px;height:20px;background:var(--line);margin:0 4px;flex:none}
.hbtn{min-height:34px;padding:0 10px;border-radius:var(--r);color:var(--ink-2)}
.hbtn .i{color:var(--ink-2)}
.hbtn.on{background:var(--accent-soft);color:var(--accent-ink)}
.hbtn.on .i{color:var(--accent-ink)}
.planbtn{display:flex;align-items:center;gap:6px;min-width:0;max-width:320px;border:0;background:transparent;padding:4px 8px;margin-left:4px;border-radius:var(--r);cursor:pointer;text-align:left}
.planbtn:hover{background:var(--hover)}
.planbtn .caret{color:var(--muted);width:16px;height:16px}
.brand{display:flex;flex-direction:column;min-width:0;line-height:1.3}
.brand b{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.brand span{color:var(--muted);font-size:11.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
header .tb .btn{width:34px;min-height:34px;padding:0}
header .tb .btn span{display:none}
header .tb .btn:disabled{opacity:.35}
header #agentBtn{min-height:34px;padding:0 12px;font-weight:600}
/* 2D / 3D */
#viewSeg{position:relative;display:flex;padding:3px;border-radius:10px;background:var(--sunken)}
#viewSeg .btn{position:relative;z-index:1;width:84px;min-height:28px;border-radius:7px;color:var(--ink-2);transition:color .35s}
#viewSeg .btn:hover{background:transparent;color:var(--ink)}
#viewSeg .pill{position:absolute;left:3px;top:3px;bottom:3px;width:84px;border-radius:7px;background:var(--surface);box-shadow:var(--sh-1);transition:transform .45s cubic-bezier(.65,0,.35,1)}
#viewSeg .btn[data-view="2d"],body.m3d #viewSeg .btn[data-view="3d"]{color:var(--ink);font-weight:600}
body.m3d #viewSeg .btn[data-view="2d"]{color:var(--ink-2);font-weight:500}
body.m3d #viewSeg .pill{transform:translateX(84px)}
#viewSeg .short{display:none}
body.busy #viewSeg{pointer-events:none}
body.m3d .only2d,body:not(.m3d) .only3d{display:none!important}
.only2d,.only3d{animation:fadeIn .3s ease both}

/* ---------- menus (More, Display) ---------- */
.menu{position:relative}
.menu summary{list-style:none}
.menu summary::-webkit-details-marker{display:none}
.menu[open]>summary{background:var(--hover);color:var(--ink)}
.menu[open]>summary.fbtn{background:var(--surface);color:var(--accent-ink);box-shadow:var(--sh-2),inset 0 0 0 1.5px var(--accent)}
.menu-pop{position:absolute;right:0;top:calc(100% + 6px);z-index:30;display:flex;flex-direction:column;width:270px;max-height:calc(100dvh - 76px);overflow:auto;padding:6px;
  background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-3);animation:popIn .14s var(--ease);overscroll-behavior:contain;cursor:default}
.menu.up .menu-pop{top:auto;bottom:calc(100% + 8px);animation-name:popUp;width:250px}
.menu-wide{flex-direction:row;width:580px;gap:6px}
.mcol{display:flex;flex-direction:column;flex:1;min-width:0}
.mcol+.mcol{border-left:1px solid var(--line);padding-left:6px}
.menu-pop>.btn,.mcol>.btn{justify-content:flex-start;gap:10px;min-height:34px;padding:0 10px;border-radius:7px;color:var(--ink);font-weight:400;text-align:left;white-space:normal;line-height:1.35}
.menu-pop>.btn .i,.mcol>.btn .i,.mrow>.i{width:17px;height:17px;color:var(--muted)}
.menu-pop>.btn.danger,.mcol>.btn.danger{color:var(--danger)}
.menu-pop>.btn.danger .i,.mcol>.btn.danger .i{color:var(--danger)}
.menu-pop .mh{padding:10px 10px 4px;font-size:11px;font-weight:600;letter-spacing:.06em;color:var(--muted)}
.menu-pop .mh:first-child,.mcol>.mh:first-child{padding-top:4px}
.mrow{display:flex;align-items:center;gap:10px;min-height:38px;padding:0 6px 0 10px}
.mrow .mlabel{flex:1;color:var(--ink)}
.menu.up .mrow{padding:2px 4px 4px}
/* the display switches: a row each, with a switch drawn by ::after */
#layers{display:flex;flex-direction:column}
#layers .chip{justify-content:space-between;min-height:34px;padding:0 10px;border:0;border-radius:7px;background:transparent;color:var(--ink);font-weight:400}
#layers .chip:hover{background:var(--hover)}
#layers .chip::after{content:"";flex:none;width:30px;height:18px;border-radius:999px;transition:background .15s;
  background:radial-gradient(circle at 9px 50%,#fff 6px,transparent 6.5px),var(--line-2)}
#layers .chip.on::after{background:radial-gradient(circle at 21px 50%,#fff 6px,transparent 6.5px),var(--accent)}

/* ---------- side panels ---------- */
aside{background:var(--panel);overflow:auto;border-right:1px solid var(--line);overscroll-behavior:contain}
aside.right{border-right:0;border-left:1px solid var(--line)}
.lib h4{margin:0;padding:14px 16px 8px;font-size:12px;font-weight:600;color:var(--ink-2);letter-spacing:.04em;position:sticky;top:54px;z-index:1;background:var(--panel)}
#lib3d h4{position:static}
.lib-search{position:sticky;top:0;z-index:2;padding:12px 12px 8px;background:var(--panel)}
.lib-search label{position:relative;display:block}
.lib-search .i{position:absolute;left:10px;top:50%;margin-top:-8px;width:16px;height:16px;color:var(--muted);pointer-events:none}
.lib-search input{width:100%;height:34px;padding:0 10px 0 32px;border:1px solid transparent;border-radius:9px;background:var(--sunken);outline:none;transition:border-color .12s,box-shadow .12s,background .12s}
.lib-search input:focus{background:var(--surface);border-color:var(--accent);box-shadow:var(--ring)}
.lib-search input::placeholder{color:var(--muted)}
.lib-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 12px 8px}
.item{display:flex;flex-direction:column;align-items:center;gap:1px;padding:10px 4px 8px;border:1px solid transparent;border-radius:var(--r-md);background:var(--sunken);
  cursor:grab;user-select:none;touch-action:pan-y;transition:background-color .15s,border-color .15s,box-shadow .15s,transform .15s}
.item.dragging{border-color:var(--accent);opacity:.5}
@media (hover:hover){.item:hover{background:var(--surface);border-color:var(--line-2);box-shadow:var(--sh-1);transform:translateY(-1px)}}
.item svg{width:54px;height:40px;margin-bottom:4px}
.item b{font-weight:500;font-size:12px;color:var(--ink);text-align:center;line-height:1.3}
.item small{color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}
.lib-empty{padding:24px 16px;text-align:center;color:var(--muted);font-size:12px}
#ghost{position:fixed;left:0;top:0;z-index:30;pointer-events:none;opacity:.8;transform:translate(-50%,-50%);filter:drop-shadow(0 4px 10px rgba(40,30,20,.3))}
#ghost svg{width:100%;height:100%;display:block;overflow:visible}
.hint{padding:12px 16px 20px;color:var(--muted);font-size:12px;line-height:1.6}
#roomList{padding:0 12px 8px;display:grid;grid-template-columns:1fr 1fr;gap:6px}
#roomList button{display:flex;flex-direction:column;width:100%;border:1px solid transparent;background:var(--sunken);padding:7px 10px;border-radius:var(--r-md);cursor:pointer;text-align:left;line-height:1.35;color:var(--ink)}
#roomList button:hover{background:var(--surface);border-color:var(--line-2)}
#roomList button.on{background:var(--accent-soft);color:var(--accent-ink)}
#roomList small{color:var(--muted);font-variant-numeric:tabular-nums}

/* the properties panel */
#panel{min-height:100%}
#panel section{padding:16px 18px}
#panel section+section{border-top:1px solid var(--line)}
#panel h3{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 8px;margin:0 0 12px;font-size:13px;font-weight:600}
#panel h3 small{color:var(--muted);font-weight:400;font-size:12px}
#panel section>.muted,#panel .form+.muted{font-size:12px;line-height:1.6}
/* a section of help text is a quiet note */
#panel section.muted{margin:14px 16px 18px;padding:10px 12px;border:0!important;border-radius:var(--r-md);background:var(--sunken);font-size:12px!important;line-height:1.6}
.phead{position:sticky;top:0;z-index:2;display:flex;align-items:center;gap:4px;padding:8px 10px;background:var(--panel);border-bottom:1px solid var(--line)}
.phead .btn{min-height:30px;padding:0 10px 0 4px;color:var(--ink-2)}
.phead .btn .i{width:16px;height:16px}
#panel details>summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px;font-weight:600}
#panel details>summary::-webkit-details-marker{display:none}
#panel details>summary::after{content:"";margin-left:auto;width:8px;height:8px;border-right:1.6px solid var(--muted);border-bottom:1.6px solid var(--muted);transform:rotate(-45deg);transition:transform .15s}
#panel details[open]>summary{margin-bottom:12px}
#panel details[open]>summary::after{transform:rotate(45deg)}
#panel details>summary small{font-weight:400;color:var(--muted)}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
td{padding:6px 4px;border-bottom:1px solid #f2ede6;vertical-align:middle}
tr:last-child td{border-bottom:0}
td:first-child{padding-left:6px}
td:last-child{padding-right:6px}
td.r{text-align:right}
tr.click{cursor:pointer}
tr.click:hover td{background:var(--hover)}
tr.click:hover td:first-child{border-radius:6px 0 0 6px}
tr.click:hover td:last-child{border-radius:0 6px 6px 0}
.sw{display:inline-block;width:12px;height:12px;border-radius:3px;border:1px solid rgba(0,0,0,.12);vertical-align:-2px;margin-right:8px}
.total{display:flex;justify-content:space-between;align-items:baseline;margin-top:8px;padding:10px 6px 0;border-top:1px solid var(--line);font-size:13px;font-weight:500}
.total b{color:var(--accent-ink);font-size:15px;font-weight:600;font-variant-numeric:tabular-nums}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px}
.stats div{background:var(--sunken);border-radius:var(--r-md);padding:10px 12px;font-variant-numeric:tabular-nums}
.stats small{display:block;color:var(--muted);font-size:11.5px;margin-bottom:2px}
.big{font-size:20px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.form{display:grid;grid-template-columns:1fr 1fr;gap:12px 10px}
.form label{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--ink-2);font-weight:500;min-width:0}
.form label.full,.form .full{grid-column:1/-1}
.form label:has(>input[type=checkbox]){flex-direction:row;align-items:center;gap:8px;font-weight:400;color:var(--ink);cursor:pointer;line-height:1.45}
input[type=checkbox],input[type=radio]{accent-color:var(--accent);width:16px;height:16px;margin:0;flex:none}
.form input,.form select,.form textarea,.dlg input,.dlg select,.dlg textarea{width:100%;min-height:34px;padding:0 10px;border:1px solid var(--line-2);border-radius:var(--r);background:var(--surface);color:var(--ink);
  font-weight:400;outline:none;transition:border-color .12s,box-shadow .12s}
.form textarea,.dlg textarea{padding:7px 10px;resize:vertical;line-height:1.5}
.form input:hover,.form select:hover,.dlg input:hover,.dlg select:hover{border-color:#cbc1b2}
.form input:focus,.form select:focus,.form textarea:focus,.dlg input:focus,.dlg select:focus,.dlg textarea:focus{border-color:var(--accent);box-shadow:var(--ring)}
.form input:disabled{background:var(--sunken);color:var(--muted)}
.form select,.dlg select{appearance:none;-webkit-appearance:none;padding-right:30px;
  background:var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5' fill='none' stroke='%238c8478' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 8px center/16px}
.form input[type=color]{padding:3px;height:34px;cursor:pointer}
.form input[type=range]{min-height:24px;padding:0;border:0;box-shadow:none;accent-color:var(--accent);background:transparent}
.form input[type=checkbox]{width:16px;min-height:0;height:16px;padding:0;box-shadow:none}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.actions:empty{display:none}
.actions .btn{border:1px solid var(--line-2);background:var(--surface);color:var(--ink)}
.actions .btn:hover{background:var(--hover)}
.actions .btn.danger{color:var(--danger);border-color:#eccbc5}
.actions .btn.danger:hover{background:var(--danger-soft)}
.actions .btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.actions .btn.primary:hover{background:var(--accent-hover)}
.mats{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.mat{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:var(--r-md);padding:7px 8px;background:var(--surface);cursor:pointer;text-align:left;transition:border-color .12s,box-shadow .12s}
.mat:hover{border-color:var(--line-2)}
.mat.on{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}
.mat i{width:26px;height:26px;border-radius:6px;border:1px solid rgba(0,0,0,.1);flex:none}
.mat span{font-size:12px;line-height:1.3;color:var(--ink)}
.mat small{display:block;color:var(--muted);font-variant-numeric:tabular-nums}
.kbd{display:grid;grid-template-columns:auto 1fr;gap:7px 12px;align-items:baseline;font-size:12px;color:var(--ink-2)}
.kbd kbd{justify-self:start;white-space:nowrap}

/* ---------- canvas ---------- */
main{position:relative;overflow:hidden;background:var(--paper)}
#plan{width:100%;height:100%;display:block;touch-action:none;cursor:default;transition:opacity .45s ease,transform .45s ease}
#plan.panning{cursor:grabbing}
#plan.tool-select.nav-hand{cursor:grab}
#plan.tool-select.nav-hand.panning{cursor:grabbing}
#plan.marquee{cursor:crosshair}
#plan.tool-measure,#plan.tool-wall,#plan.tool-opening,#plan.tool-column,#plan.tool-calibrate{cursor:crosshair}
#plan.tool-moveunder{cursor:move}
#plan .wall{pointer-events:none}
#plan.tool-demolish .wall{pointer-events:all;cursor:pointer}
#plan.tool-demolish .wall:hover{fill:#d9894f}
#plan.tool-select .room:hover{opacity:.82}
#plan .furn{cursor:move}
@media (hover:hover){#plan .furn:hover{filter:drop-shadow(0 0 2px rgba(181,101,58,.7))}}
[data-handle]{cursor:pointer}
[data-handle=size]{cursor:nwse-resize}
main.is3d #plan{opacity:0;pointer-events:none}
/* top centre: the tools (or the 3D controls), the options of the tool in use, its hint: stacked, so they never cover each other */
.cv-top{position:absolute;left:50%;top:12px;transform:translateX(-50%);z-index:5;display:flex;flex-direction:column;align-items:center;gap:8px;
  width:max-content;max-width:calc(100% - 24px);pointer-events:none}
.cv-top>*{pointer-events:auto;max-width:100%}
.island{display:flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:6px;padding:4px;background:var(--surface);border-radius:12px;box-shadow:var(--sh-2)}
.island>.grp{display:flex;align-items:center;gap:2px}
.island>.grp:not(.segc)+.grp:not(.segc),.island>.segc+.grp:not(.segc){padding-left:8px;border-left:1px solid var(--line);border-radius:0}
.tb .btn{gap:6px}
#tools .btn{min-height:34px;padding:0 11px;border-radius:var(--r)}
#tools .btn .i{width:18px;height:18px}
.range{display:flex;align-items:center;gap:8px;padding:0 8px;color:var(--ink-2);font-size:12px;font-weight:500}
.range input{width:110px;accent-color:var(--accent)}
.range span{font-variant-numeric:tabular-nums}
#sunT{color:var(--ink);min-width:3em}
.toolopts{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:6px 8px;padding:4px;background:var(--surface);border-radius:12px;box-shadow:var(--sh-2)}
.toolopts:empty{display:none}
.toolopts .tlabel{padding:0 0 0 8px;font-size:12px;color:var(--muted);white-space:nowrap}
.toolopts .tkey{padding:0 8px 0 4px}
.toolopts .segc .btn{gap:5px}
.toolopts .segc .btn .i{width:16px;height:16px}
.toolopts .short,.toolopts .tbreak{display:none}
.modehint{display:none;max-width:min(640px,100%);padding:6px 12px;border-radius:var(--r-md);background:rgba(255,254,251,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:var(--sh-1);color:var(--ink-2);font-size:12px;line-height:1.55;text-align:center;pointer-events:none!important}
.modehint.show{display:block;animation:fadeIn .2s ease}
/* bottom left: scale bar */
.scalebar{position:absolute;left:12px;bottom:12px;z-index:3;background:rgba(255,254,251,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:var(--sh-1);
  border-radius:var(--r);padding:6px 10px 8px;font-size:11px;line-height:1.2;pointer-events:none;font-variant-numeric:tabular-nums;transition:opacity .3s}
.scalebar .sb-lbl{display:flex;justify-content:space-between;gap:6px;white-space:nowrap;color:var(--muted)}
.scalebar #sbText{color:var(--ink);font-weight:600}
.scalebar .bar{height:6px;margin-top:4px;border:1px solid var(--ink);box-sizing:border-box;
  background:linear-gradient(90deg,var(--ink) 50%,#fffdf9 50%) 0 0/calc(200% / var(--parts,5)) 100% repeat-x}
main.is3d .scalebar{opacity:0}
/* top right: structure legend */
.legend{position:absolute;right:12px;top:12px;display:grid;gap:4px;padding:8px 12px;background:rgba(255,254,251,.94);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:var(--sh-1);border-radius:var(--r-md);font-size:11px;color:var(--ink);z-index:4;pointer-events:none}
.legend:empty{display:none}
.legend b{font-size:11px;color:var(--muted);font-weight:600}
.legend div{display:flex;align-items:center;gap:6px}
/* bottom right: display menu and zoom */
.cv-br{position:absolute;right:12px;bottom:12px;z-index:5;display:flex;align-items:flex-end;gap:8px}
.zoombar{display:flex;align-items:center;height:36px;padding:2px;background:var(--surface);border-radius:var(--r-md);box-shadow:var(--sh-2)}
.zoombar .btn{width:32px;min-height:32px;padding:0;border-radius:7px}
.zoombar .zr{min-width:50px;text-align:center;font-size:12px;font-weight:500;color:var(--ink-2);font-variant-numeric:tabular-nums}
.zsep{width:1px;height:18px;background:var(--line);margin:0 2px}
.zoomfloat,#dock{display:none}
.phone-only{display:none!important}
.narrow-only{display:none!important}
/* bottom centre: what to do with the selection */
#fab{position:absolute;left:50%;bottom:14px;transform:translate(-50%,10px);display:flex;align-items:center;gap:2px;padding:4px;background:var(--surface);border-radius:12px;
  box-shadow:var(--sh-3);z-index:6;opacity:0;visibility:hidden;transition:opacity .18s,transform .18s var(--ease),visibility 0s linear .18s;max-width:calc(100% - 24px)}
main.drawer-panel #fab{opacity:0;visibility:hidden}
#fab.show{opacity:1;visibility:visible;transform:translate(-50%,0);transition:opacity .18s,transform .18s var(--ease)}
#fab .name{padding:0 10px 0 8px;font-weight:600;color:var(--ink);max-width:10em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#fab .btn{min-height:32px;padding:0 10px}
#fab .btn .i{width:17px;height:17px}
#fab .sep{width:1px;height:20px;background:var(--line);margin:0 4px}
#loupe{position:absolute;z-index:5;width:120px;height:120px;margin:-60px 0 0 -60px;border-radius:50%;overflow:hidden;border:3px solid var(--ink);box-shadow:0 4px 14px rgba(0,0,0,.3);background:#fffdf9;pointer-events:none;display:none}
#loupe.on{display:block}
#loupe svg{width:100%;height:100%;display:block}
#loupe::before,#loupe::after{content:'';position:absolute;left:50%;top:50%;background:#c65b3a}
#loupe::before{width:1.5px;height:28px;margin:-14px 0 0 -.75px}
#loupe::after{width:28px;height:1.5px;margin:-.75px 0 0 -14px}

/* ---------- 3D ---------- */
#view3d{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .45s ease,visibility 0s linear .45s}
main.is3d #view3d{opacity:1;visibility:visible;transition:opacity .45s ease}
#view3d canvas{display:block;outline:none}
#walkOverlay{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:rgba(30,28,25,.35);z-index:6;cursor:pointer}
#walkOverlay>div{background:var(--surface);border-radius:var(--r-xl);padding:24px 28px;text-align:center;max-width:360px;box-shadow:var(--sh-3)}
#walkOverlay h3{margin:0 0 8px;font-size:16px}
#walkOverlay p{margin:4px 0;color:var(--ink-2);font-size:12.5px}
#cross{position:absolute;left:50%;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;z-index:2;display:none;pointer-events:none}
#cross:before,#cross:after{content:"";position:absolute;background:#fff;box-shadow:0 0 2px #000}
#cross:before{left:6px;top:0;width:2px;height:14px}#cross:after{top:6px;left:0;height:2px;width:14px}
#hint3d{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);background:rgba(38,35,31,.72);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#fff;border-radius:999px;
  padding:6px 14px;font-size:12px;z-index:2;pointer-events:none;white-space:nowrap;max-width:calc(100% - 24px);overflow:hidden;text-overflow:ellipsis;transition:opacity .3s}
main.animating #hint3d,main:has(#fab.show) #hint3d{opacity:0}
.rlabel{font-size:12px;font-weight:600;color:#26231f;background:rgba(255,254,251,.92);box-shadow:0 1px 3px rgba(38,35,31,.15);border-radius:999px;padding:2px 10px;white-space:nowrap;pointer-events:none}
.rlabel small{font-weight:400;color:var(--muted);margin-left:4px}
#joy{position:absolute;left:28px;bottom:28px;width:130px;height:130px;border-radius:50%;background:rgba(255,253,249,.25);
  border:2px solid rgba(255,255,255,.7);box-shadow:0 4px 18px rgba(0,0,0,.18);z-index:3;display:none;touch-action:none;backdrop-filter:blur(3px)}
#joy i{position:absolute;left:50%;top:50%;width:56px;height:56px;margin:-28px 0 0 -28px;border-radius:50%;background:rgba(255,253,249,.92);box-shadow:0 2px 8px rgba(0,0,0,.25);pointer-events:none}
#walkExit{position:absolute;right:16px;bottom:28px;z-index:3;display:none;min-height:40px;padding:0 16px;box-shadow:var(--sh-2)}

/* ---------- status bar ---------- */
footer{grid-column:1/-1;display:flex;gap:16px;align-items:center;padding:0 14px;background:var(--panel);overflow:hidden;white-space:nowrap;
  border-top:1px solid var(--line);color:var(--muted);font-size:11.5px;font-variant-numeric:tabular-nums}
footer b{color:var(--ink-2);font-weight:500}
#tip{overflow:hidden;text-overflow:ellipsis}

/* ---------- dialogs ---------- */
.dlg{border:0;border-radius:var(--r-xl);padding:22px 24px 20px;width:min(440px,calc(100vw - 32px));background:var(--surface);color:var(--ink);box-shadow:var(--sh-3)}
.dlg[open]{animation:dlgIn .18s var(--ease)}
.dlg::backdrop{background:rgba(38,35,31,.38);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.dlg h3{margin:0 0 6px;font-size:17px;font-weight:600;line-height:1.35}
.dlg p{margin:0 0 14px;font-size:13px;line-height:1.6;color:var(--ink-2)}
.dlg p.muted{color:var(--ink-2)}
.dlg .note{font-size:12px;color:var(--muted)}
.dlg .form{grid-template-columns:1fr;gap:14px;margin-top:4px}
.dlg .form label{font-size:12.5px}
.dlg-steps{margin:0 0 14px;padding:0;list-style:none;counter-reset:step;font-size:13px;line-height:1.55;color:var(--ink)}
.dlg-steps li{counter-increment:step;position:relative;margin:0 0 8px;padding-left:30px}
.dlg-steps li::before{content:counter(step);position:absolute;left:0;top:0;width:20px;height:20px;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink);font-size:11.5px;font-weight:600;
  display:flex;align-items:center;justify-content:center}
.dlg .actions{justify-content:flex-end;margin-top:22px}
.dlg .actions .btn{min-height:36px;min-width:84px;padding:0 16px}
.dlg .actions .btn.primary.danger{background:var(--danger);border-color:var(--danger)}
.dlg .actions .btn.primary.danger:hover{background:#a8301f}

/* ---------- toast ---------- */
#toast{position:fixed;left:50%;bottom:64px;z-index:40;display:flex;align-items:center;gap:14px;max-width:min(520px,calc(100vw - 32px));padding:10px 12px 10px 16px;
  background:#2a2722;color:#fff;border-radius:var(--r-md);box-shadow:var(--sh-3);font-size:13px;line-height:1.45;
  opacity:0;transform:translateX(-50%) translateY(12px);transition:opacity .2s,transform .25s var(--ease);pointer-events:none}
#toast:not(:has(.toast-act)){padding-right:16px}
#toast.show{opacity:1;transform:translateX(-50%);pointer-events:auto}
#toast .toast-act{flex:none;min-height:28px;padding:0 10px;border-radius:6px;background:rgba(255,255,255,.1);color:#f4bf9c;font-weight:600}
#toast .toast-act:hover{background:rgba(255,255,255,.18);color:#ffd5b8}

/* ---------- plan library and drawing import (sheets) ---------- */
.sheet{border:0;padding:0;margin:auto;width:min(880px,94vw);max-height:min(740px,90dvh);border-radius:var(--r-xl);background:var(--panel);color:var(--ink);
  box-shadow:var(--sh-3);overflow:hidden;display:flex;flex-direction:column}
.sheet[open]{animation:dlgIn .2s var(--ease)}
.sheet:not([open]){display:none}
.sheet:focus,.sheet:focus-visible{outline:none}
.sheet::backdrop{background:rgba(38,35,31,.4);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.sheet-head{display:flex;align-items:center;gap:10px;padding:14px 14px 12px 22px;border-bottom:1px solid var(--line)}
.sheet-head h3{margin:0;font-size:16px;font-weight:600;flex:1;min-width:0}
.sheet-head h3 small{font-weight:400}
.sheet-head .hbtn{width:34px;padding:0}
.sheet-tabs{display:inline-flex;align-self:flex-start;gap:2px;margin:16px 22px 0;padding:3px;border-radius:10px;background:var(--sunken)}
.sheet-tabs .btn{min-height:30px;padding:0 14px;border-radius:7px}
.sheet-tabs .btn.on{background:var(--surface);color:var(--ink);box-shadow:var(--sh-1);font-weight:600}
.sheet-tabs .btn small{margin-left:2px;color:var(--muted);font-weight:500;font-variant-numeric:tabular-nums}
.sheet-acts{display:flex;flex-wrap:wrap;gap:8px;padding:14px 22px}
.sheet-acts .btn{min-height:36px;padding:0 14px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink)}
.sheet-acts .btn:hover{background:var(--hover)}
.sheet-acts .btn .i{width:17px;height:17px;color:var(--muted)}
.sheet-acts .btn.primary{background:var(--accent);color:#fff;border-color:transparent}
.sheet-acts .btn.primary .i{color:#fff}
.sheet-acts .btn.primary:hover{background:var(--accent-hover)}
.sheet-body{overflow:auto;padding:2px 22px 22px;overscroll-behavior:contain}
.sheet-body>p.muted{font-size:12px;line-height:1.6}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(184px,1fr));gap:14px}
.card{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);overflow:hidden;cursor:pointer;text-align:left;padding:0;
  transition:border-color .15s,box-shadow .15s,transform .15s}
@media (hover:hover){.card:hover{border-color:var(--line-2);box-shadow:var(--sh-2);transform:translateY(-2px)}}
.card.cur{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--paper);display:flex;align-items:center;justify-content:center;padding:12px;border-bottom:1px solid var(--line)}
.card .thumb svg{width:100%;height:100%}
.card .thumb .empty{color:var(--muted);font-size:12px}
.card .meta{padding:10px 12px 12px;min-width:0;display:flex;flex-direction:column;gap:1px}
.card .meta b{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;font-size:13px;font-weight:600;line-height:1.35;overflow:hidden;overflow-wrap:anywhere;margin-bottom:2px}
.card .meta small{display:block;color:var(--muted);font-size:11.5px;font-variant-numeric:tabular-nums}
.card .badge{position:absolute;left:10px;top:10px;font-size:11px;font-weight:600;padding:1px 8px;border-radius:999px;background:var(--accent);color:#fff}
.card .badge.soft{background:var(--accent-soft);color:var(--accent-ink)}
.card .del{position:absolute;right:8px;top:8px;width:28px;height:28px;border-radius:50%;border:0;background:rgba(255,254,251,.94);color:var(--danger);
  display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--sh-1);opacity:.85;transition:opacity .15s,background .15s}
.card .del:hover{opacity:1;background:var(--danger-soft)}
@media (hover:hover){.card .del{opacity:0}.card:hover .del,.card:focus-within .del{opacity:.9}}
.card .del .i{width:14px;height:14px}
.sheet-empty{padding:36px 10px;text-align:center;color:var(--muted)}
.sheet.imp{width:min(1120px,96vw);max-height:min(840px,94dvh)}
.imp-body{display:grid;grid-template-columns:minmax(0,1fr) 320px;min-height:0;flex:1;overflow:hidden}
.imp-view{position:relative;background:var(--paper);border-right:1px solid var(--line);min-height:320px;display:flex;flex-direction:column}
.imp-svg{flex:1;width:100%;min-height:0;cursor:pointer}
.imp-svg .raw{fill:none;stroke:#b8ae9f;stroke-width:1;vector-effect:non-scaling-stroke}
.imp-svg .walls line{stroke-linecap:square;opacity:.72}
.imp-svg .walls .ok{stroke:#2f5d62}
.imp-svg .walls .low{stroke:#d39a2c}
.imp-svg .walls .off{stroke:#c65b3a;opacity:.25;stroke-dasharray:200 120}
.imp-svg .ops line{stroke:#b5653a;opacity:.9;pointer-events:none}
.imp-svg .ops .window{stroke:#4a90b8}
.imp-svg .cols rect{fill:#2b2824;pointer-events:none}
.imp-svg .items rect{fill:rgba(74,144,184,.18);stroke:#4a90b8;stroke-width:2;vector-effect:non-scaling-stroke}
.imp-svg .items .st{fill:rgba(211,154,44,.22);stroke:#b07816}
.imp-svg .items .off{fill:none;stroke:#c65b3a;opacity:.4;stroke-dasharray:6 4}
.imp-svg .swings circle{fill:none;stroke:#d23c2c;stroke-width:3;vector-effect:non-scaling-stroke;pointer-events:none}
.imp-svg .labels text{fill:#2b2824;font-weight:600;text-anchor:middle;pointer-events:none;paint-order:stroke;stroke:#fffdf9;stroke-width:3;vector-effect:non-scaling-stroke}
.imp-legend{display:flex;flex-wrap:wrap;gap:4px 14px;align-items:center;padding:10px 14px 0;font-size:12px;color:var(--ink-2)}
.imp-legend .k{display:inline-block;width:14px;height:6px;border-radius:2px;margin-right:-8px}
.imp-legend .k.ok{background:#2f5d62}.imp-legend .k.low{background:#d39a2c}.imp-legend .k.off{background:#c65b3a;opacity:.35}.imp-legend .k.op{background:#b5653a}.imp-legend .k.it{background:#4a90b8}.imp-legend .k.st{background:#d39a2c}.imp-legend .k.sw{background:none;border:2px solid #d23c2c;width:10px;height:10px;border-radius:50%;margin-right:-6px}.imp-legend .k.col{background:#2b2824}
.imp-tip{margin:6px 14px 12px;font-size:12px}
.imp-side{overflow:auto;padding:4px 20px 18px;display:flex;flex-direction:column}
.imp-side section{padding:14px 0;border-bottom:1px solid var(--line)}
.imp-side h4{margin:0 0 8px;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.06em}
.imp-side select{width:100%;min-height:36px;border:1px solid var(--line-2);border-radius:var(--r);padding:0 10px;font-size:14px;background:var(--surface);color:inherit}
.imp-stats{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.imp-stats b{font-size:16px;font-variant-numeric:tabular-nums}
.imp-stats .warn{color:#b07816;font-size:12px}
.imp-warn{font-size:11.5px;margin:8px 0 0;line-height:1.55}
.imp-opt{display:flex;align-items:flex-start;gap:8px;padding:5px 0;line-height:1.45;cursor:pointer}
.imp-opt input{margin-top:2px}
.imp-scale{display:flex;align-items:center;gap:6px;font-size:16px}
.imp-scale input{width:100px;min-height:36px;border:1px solid var(--line-2);border-radius:var(--r);padding:0 10px;font-size:16px}
.imp-note{font-size:12px;line-height:1.6;color:var(--warn);background:var(--warn-soft);border-radius:var(--r-md);padding:10px 12px;margin:14px 0}
.imp-side .actions{display:flex;gap:8px;justify-content:flex-end;margin-top:auto;padding-top:10px}
.imp-side .actions .btn{min-height:36px;padding:0 16px}

/* ---------- touch: larger targets ---------- */
@media (pointer:coarse){
  body{font-size:14px}
  :root{--h:40px}
  .hbtn,header .tb .btn{min-height:40px}
  header .tb .btn{width:40px}
  #viewSeg .btn{min-height:34px}
  .segc .btn{min-height:34px;padding:0 12px}
  .chip{min-height:34px}
  .menu-pop>.btn,.mcol>.btn,#layers .chip{min-height:44px}
  .item{padding:12px 4px 10px}
  .form input,.form select{font-size:16px;min-height:40px}
  .form input[type=color]{height:40px}
  .actions .btn,#fab .btn{min-height:42px;padding:0 14px}
  td{padding:9px 4px}
  #roomList button{padding:9px 10px}
  .mat{padding:9px 8px}
  .range input{width:120px}
  .lib-search input{height:40px;font-size:16px}
  .lib h4{top:60px}
}

/* ---------- wide: the side panels can be folded away ---------- */
@media (min-width:1101px){
  .app{transition:grid-template-columns .3s var(--ease)}
  .app.hide-lib{grid-template-columns:0 minmax(0,1fr) var(--panel-w)}
  .app.hide-panel{grid-template-columns:var(--lib-w) minmax(0,1fr) 0}
  .app.hide-lib.hide-panel{grid-template-columns:0 minmax(0,1fr) 0}
  .app.hide-lib aside.lib,.app.hide-panel aside.right{overflow:hidden;border:0}
  aside{overflow-x:hidden}
  aside.lib>div{min-width:calc(var(--lib-w) - 1px)} #panel{min-width:calc(var(--panel-w) - 1px)}   /* the content keeps its width while the panel folds */
}
@media (max-width:1279px){
  header .hbtn .lbl{display:none}
  header .hbtn{width:36px;padding:0}
  .planbtn{max-width:260px}
}
/* ---------- tablet: the side panels become drawers over the canvas ---------- */
@media (max-width:1100px){
  .grp.narrow-only{display:flex!important}
  .btn.narrow-only,#fab .btn.narrow-only{display:inline-flex!important}
  .app{grid-template-columns:minmax(0,1fr)}
  main,aside.lib,aside.right{grid-row:2;grid-column:1}
  aside.lib,aside.right{position:relative;z-index:7;width:min(340px,88vw);border:0;transition:transform .3s var(--ease),box-shadow .3s}
  aside.lib{justify-self:start;transform:translateX(-110%)}
  aside.right{justify-self:end;transform:translateX(110%)}
  aside.open{transform:none;box-shadow:var(--sh-3)}
  .lib-grid{grid-template-columns:1fr 1fr 1fr}
  .brand span,footer .only2d{display:none!important}
}
/* ---------- phone (narrow, or a short landscape touch screen): four things at the top, the tools at the bottom in thumb reach ---------- */
@media (max-width:900px), (max-height:500px) and (pointer:coarse){
  :root{--hd:54px}
  .app{grid-template-rows:auto minmax(0,1fr) auto;padding-bottom:0}
  header{display:flex;gap:6px;padding:6px 8px;min-height:54px}
  .hd-l{flex:1 1 auto;gap:4px}
  .hd-r{gap:2px}
  .hsep,#tgPanel,header .hbtn .lbl{display:none!important}
  .hbtn{width:42px;height:42px;padding:0;border-radius:12px}
  .hbtn .i{width:21px;height:21px}
  .planbtn{flex:1 1 auto;max-width:none;padding:2px 4px;margin:0}
  .planbtn .brand span{display:none}
  .planbtn .brand b{font-size:15px}
  #viewSeg .btn,#viewSeg .pill{width:54px}
  body.m3d #viewSeg .pill{transform:translateX(54px)}
  #viewSeg .long{display:none}
  #viewSeg .short{display:inline}
  footer{display:none}
  #dock{display:flex;grid-row:3;grid-column:1/-1;align-items:center;gap:6px;padding:6px 8px calc(6px + env(safe-area-inset-bottom));background:var(--panel);
    border-top:1px solid var(--line);overflow-x:auto;scrollbar-width:none;overscroll-behavior-x:contain;z-index:7}
  #dock::-webkit-scrollbar{display:none}
  #dock>.grp{flex:none;gap:2px}
  #dock #tools{flex:1 0 auto;justify-content:space-around}
  #dock .tb .btn{flex-direction:column;gap:3px;min-width:52px;min-height:52px;padding:5px 4px;font-size:11px;line-height:1.1;border-radius:12px}
  #dock .tb .btn .i{width:22px;height:22px}
  #dock .tb .btn:disabled{opacity:.35}
  #dock #toggles3d .chip{min-height:36px}
  #stage>#histGrp{position:absolute;left:10px;top:10px;z-index:5;display:flex;gap:0;padding:3px;border-radius:12px;background:var(--surface);box-shadow:var(--sh-2)}
  #stage>#histGrp .btn{min-height:40px;min-width:42px;padding:0 9px}
  #stage>#histGrp .btn span{display:none}
  #stage>#histGrp .btn:disabled{opacity:.3}
  .island{display:none}
  .cv-top{left:10px;right:10px;top:10px;transform:none;width:auto;max-width:none;align-items:flex-end}
  .cv-top>.toolopts{max-width:calc(100% - 104px)}
  .toolopts{justify-content:flex-end}
  .modehint{align-self:stretch;max-width:none;display:none;-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;pointer-events:auto!important;cursor:pointer}
  .modehint.show{display:-webkit-box}
  .modehint.full{-webkit-line-clamp:unset;line-clamp:unset}
  #hint3d{white-space:normal;text-align:center;border-radius:12px;bottom:12px}
  .menu-pop{position:fixed;top:calc(env(safe-area-inset-top) + 58px);right:8px;left:auto;width:min(360px,calc(100vw - 16px));max-height:calc(100dvh - env(safe-area-inset-top) - 140px)}
  .menu-wide{flex-direction:column;gap:0}
  .mcol+.mcol{border-left:0;padding-left:0;border-top:1px solid var(--line);margin-top:6px;padding-top:6px}
  .menu-pop .btn.phone-only{display:flex!important}
  .menu.up .menu-pop{position:fixed;top:auto;left:8px;right:8px;width:auto;bottom:calc(env(safe-area-inset-bottom) + 76px)}
  .sheet{width:100vw;max-width:100vw;max-height:none;height:calc(100dvh - env(safe-area-inset-top) - 24px);margin:auto 0 0;border-radius:18px 18px 0 0;
    padding-bottom:env(safe-area-inset-bottom);animation:sheetUp .28s var(--ease)}
  .sheet-head{padding:12px 12px 10px 18px}
  .sheet-tabs{margin:12px 16px 0}
  .sheet-acts{padding:12px 16px}
  .sheet-body{padding:2px 16px 18px}
  .cards{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
  #toast{bottom:calc(92px + env(safe-area-inset-bottom))}
  /* on the canvas: undo / redo top left, tool options top right, the hint under them, display + zoom at the right, the selection bar along the bottom */
  .zoombar,.wide-only{display:none!important}
  .cv-br{right:12px;bottom:80px;flex-direction:column;align-items:center;gap:8px}
  .zoomfloat{display:flex;flex-direction:column;padding:3px;gap:2px;border-radius:14px;background:var(--surface);box-shadow:var(--sh-2)}
  .zoomfloat .btn{width:42px;height:42px;padding:0;border-radius:10px}
  .zoomfloat .btn .i{width:20px;height:20px}
  .cv-br .fbtn{width:48px;height:48px;border-radius:14px}
  #fab{left:8px;right:8px;bottom:8px;max-width:none;transform:translateY(12px);flex-wrap:wrap;row-gap:0;column-gap:2px;padding:4px 6px 6px;border-radius:16px}
  #fab.show{transform:none}
  #fab .name{flex:1 0 100%;max-width:none;padding:4px 8px 2px;font-size:12px;font-weight:600;color:var(--muted)}
  #fab .btn{flex:1 1 0;min-width:0;padding:8px 2px;white-space:nowrap}
  #fab .sep,#fab .lbl{display:none}
  main:has(#fab.show) .scalebar{opacity:0}
  main:has(#fab.show) .cv-br{bottom:162px}
  /* the legend would cover the hint and the options at the top of a small screen: it sits above the scale bar, smaller, and steps aside for the selection bar */
  .legend{top:auto;right:auto;left:12px;bottom:62px;max-width:calc(100% - 96px);font-size:10px;padding:5px 8px;gap:3px;grid-template-columns:auto auto;column-gap:10px;z-index:3}
  .legend b{grid-column:1/-1;font-size:10px}
  main:has(#fab.show) .legend{opacity:0}
  body main:has(#fab.show) #agentFab{bottom:96px}
}
@media (max-width:900px){
  .toolopts .tkey,.toolopts .long{display:none}
  .toolopts .short{display:inline}
  .toolopts .tbreak{display:block;flex-basis:100%;height:0}
  .imp-body{grid-template-columns:1fr;grid-template-rows:minmax(260px,46dvh) auto;overflow:auto}
  .imp-view{border-right:0;border-bottom:1px solid var(--line)}
  .imp-side{overflow:visible}
}