/* ══════════════════════════════════════════════════════════════════════════
   描图台 Drafting Room — design system
   World: a modern drafting table. Hairlines carry depth, the grid measures,
   the type is an engineering grotesk, exports carry a title block.
   ══════════════════════════════════════════════════════════════════════════ */

/* ── self-hosted Latin/digit voice (IBM Plex, SIL OFL) ─────────────────── */
@font-face{font-family:"Plex";src:local("IBM Plex Sans"),url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Plex";src:local("IBM Plex Sans Medium"),url("fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Plex";src:local("IBM Plex Sans SemiBold"),url("fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Plex Mono";src:local("IBM Plex Mono"),url("fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Plex Mono";src:local("IBM Plex Mono Medium"),url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}

/* ── tokens ────────────────────────────────────────────────────────────── */
:root{
  --sans:"Plex","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI Variable Text","Segoe UI",system-ui,sans-serif;
  --mono:"Plex Mono","Cascadia Mono",Consolas,"PingFang SC","Microsoft YaHei",ui-monospace,monospace;

  --r-xs:2px; --r-sm:3px; --r-md:5px; --r-lg:8px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t-fast:120ms var(--ease); --t:170ms var(--ease);
  --w-left:270px; --w-right:340px; --h-top:54px; --h-foot:30px;
}
:root[data-theme="ink"]{
  color-scheme:dark;
  --bg:#0B0F14; --panel:#111823; --raise:#17202B; --sunken:#0C1219;
  --sheet:#0E141C; --line:rgba(255,255,255,.075); --line-2:rgba(255,255,255,.15);
  --ink:#E9EEF4; --ink-2:#9AA8B7; --ink-3:#7E8C9B;
  --accent:#54A6FF; --accent-ink:#07131F; --accent-soft:rgba(84,166,255,.14);
  --mark:#FFB347; --mark-soft:rgba(255,179,71,.14);
  --ok:#3FC79A; --warn:#FFB347; --bad:#FF6B6B;
  --grid-min:rgba(255,255,255,.038); --grid-maj:rgba(255,255,255,.085);
  --grid-axis:rgba(84,166,255,.30);
  --shadow:0 12px 28px -12px rgba(0,0,0,.72),0 2px 6px -3px rgba(0,0,0,.5);
  --scrim:rgba(6,9,13,.62);
  --img-blend:normal;
}
:root[data-theme="vellum"]{
  color-scheme:light;
  --bg:#E9E5DC; --panel:#F6F4EF; --raise:#FFFFFF; --sunken:#E3DED4;
  --sheet:#FCFBF7; --line:rgba(25,30,37,.12); --line-2:rgba(25,30,37,.24);
  --ink:#191E25; --ink-2:#535D6B; --ink-3:#656C78;
  --accent:#1B5FC4; --accent-ink:#FFFFFF; --accent-soft:rgba(27,95,196,.10);
  --mark:#9A5B00; --mark-soft:rgba(154,91,0,.12);
  --ok:#0F7A57; --warn:#8A5200; --bad:#B3261E;
  --grid-min:rgba(25,30,37,.055); --grid-maj:rgba(25,30,37,.12);
  --grid-axis:rgba(27,95,196,.32);
  --shadow:0 10px 24px -14px rgba(35,30,20,.35),0 2px 5px -3px rgba(35,30,20,.2);
  --scrim:rgba(40,36,28,.42);
  --img-blend:multiply;
}

*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:400 13px/1.5 var(--sans);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow:hidden;
}
h1,h2,h3,h4,p,dl,dd,dt,ol,ul{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
b,strong{font-weight:600}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
[hidden]{display:none!important}

::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:1.5px solid var(--accent);outline-offset:1px}
*{scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--line-2);border:3px solid transparent;background-clip:content-box;border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:var(--ink-3);background-clip:content-box;border:3px solid transparent}
::-webkit-scrollbar-track{background:transparent}

/* ── app frame ─────────────────────────────────────────────────────────── */
.app{
  height:100dvh;display:grid;
  grid-template-rows:var(--h-top) minmax(0,1fr) var(--h-foot);
  grid-template-columns:minmax(0,1fr);
}
.topbar,.statusbar,.body{min-width:0}
.body{
  display:grid;min-height:0;
  grid-template-columns:var(--w-left) minmax(0,1fr) var(--w-right);
}
body[data-left="0"] .body{grid-template-columns:0 minmax(0,1fr) var(--w-right)}
body[data-right="0"] .body{grid-template-columns:var(--w-left) minmax(0,1fr) 0}
body[data-left="0"][data-right="0"] .body{grid-template-columns:0 minmax(0,1fr) 0}
body[data-left="0"] .rail-left,body[data-right="0"] .rail-right{opacity:0;pointer-events:none;overflow:hidden}

/* ── topbar ────────────────────────────────────────────────────────────── */
.topbar{
  display:flex;align-items:center;gap:14px;padding:0 12px 0 14px;
  background:var(--panel);border-bottom:1px solid var(--line-2);
  position:relative;z-index:50;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;flex:0 0 auto}
.brand-mark{width:26px;height:26px;color:var(--accent);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text b{font-size:15px;font-weight:600;letter-spacing:.02em}
.brand-text i{font:500 11px/1.3 var(--mono);letter-spacing:.1em;color:var(--ink-3);font-style:normal}
.topbar-mid{display:flex;align-items:center;gap:12px;min-width:0;flex:1 1 auto}
.proj{
  display:flex;align-items:baseline;gap:7px;padding:4px 8px 4px 9px;border-radius:var(--r-sm);
  border:1px solid transparent;min-width:0;max-width:340px;transition:background var(--t-fast),border-color var(--t-fast);
}
.proj:hover{background:var(--raise);border-color:var(--line)}
.proj-label{font:600 9.5px/1 var(--sans);letter-spacing:.16em;color:var(--ink-3);flex:0 0 auto}
.proj-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.proj-caret{width:14px;height:14px;color:var(--ink-3);align-self:center;flex:0 0 auto}
.chips{display:flex;gap:6px;align-items:center;min-width:0;overflow:hidden}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 8px;flex:0 0 auto;
  border:1px solid var(--line);border-radius:var(--r-xs);background:var(--sunken);
  font:500 11px/1 var(--mono);letter-spacing:.02em;color:var(--ink-2);white-space:nowrap;
}
.chip::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--ink-3);flex:0 0 auto}
.chip[data-state="ok"]{color:var(--ink);border-color:var(--line-2)}
.chip[data-state="ok"]::before{background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 18%,transparent)}
.chip[data-state="warn"]::before{background:var(--warn)}
.chip[data-state="bad"]::before{background:var(--bad)}
.chip[data-state="run"]{color:var(--ink);border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}
.chip[data-state="run"]::before{background:var(--accent);animation:pulse 1.1s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.72)}}
.topbar-act{display:flex;align-items:center;gap:8px;flex:0 0 auto}

.seg{display:flex;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;background:var(--sunken)}
.seg .ib{border-radius:0;width:30px}
.seg .ib+.ib{border-left:1px solid var(--line)}

.ib{
  width:28px;height:28px;display:inline-grid;place-items:center;border-radius:var(--r-sm);
  color:var(--ink-2);transition:background var(--t-fast),color var(--t-fast);
}
.ib:hover:not([disabled]){background:var(--raise);color:var(--ink)}
.ib[disabled]{opacity:.32;cursor:not-allowed}
.ib svg{width:16px;height:16px;display:block}
.ib-sm{width:24px;height:24px}
.ib-sm svg{width:14px;height:14px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:30px;padding:0 12px;border-radius:var(--r-sm);border:1px solid var(--line-2);
  font-size:12px;font-weight:500;letter-spacing:.01em;white-space:nowrap;
  transition:background var(--t-fast),border-color var(--t-fast),color var(--t-fast),transform var(--t-fast);
}
.btn svg{width:15px;height:15px}
.btn:hover{background:var(--raise)}
.btn:active{transform:translateY(.5px)}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.btn-accent{background:var(--accent);border-color:transparent;color:var(--accent-ink);font-weight:600}
.btn-accent:hover{background:var(--accent);filter:brightness(1.14)}
.btn-accent:active{filter:brightness(.96)}
.btn-accent[disabled]:hover{filter:none}
.btn-quiet{background:transparent;border-color:var(--line);color:var(--ink-2)}
.btn-quiet:hover{color:var(--ink);border-color:var(--line-2);background:var(--raise)}
.btn-danger{background:transparent;border-color:color-mix(in srgb,var(--bad) 45%,var(--line));color:var(--bad)}
.btn-danger:hover{background:color-mix(in srgb,var(--bad) 12%,transparent)}
.btn-sm{height:26px;padding:0 10px;font-size:11.5px}
.btn-block{width:100%}

.menu-wrap{position:relative}
.menu{
  position:absolute;right:0;top:calc(100% + 6px);width:244px;padding:5px;z-index:60;
  background:var(--raise);border:1px solid var(--line-2);border-radius:var(--r-md);box-shadow:var(--shadow);
}
.menu button{
  display:block;width:100%;text-align:left;padding:7px 9px;border-radius:var(--r-sm);
  transition:background var(--t-fast);
}
.menu button:hover{background:var(--accent-soft)}
.menu b{display:block;font-size:12px;font-weight:500}
.menu i{display:block;font:400 11px/1.35 var(--sans);font-style:normal;color:var(--ink-3);margin-top:1px}
.menu hr{border:0;border-top:1px solid var(--line);margin:5px 4px}

/* ── rails & panels ────────────────────────────────────────────────────── */
.rail{
  background:var(--panel);min-height:0;overflow-y:auto;overflow-x:hidden;
  transition:opacity var(--t);
  display:flex;flex-direction:column;
}
.rail-left{border-right:1px solid var(--line-2)}
.rail-right{border-left:1px solid var(--line-2)}
.panel{border-bottom:1px solid var(--line);flex:0 0 auto;min-width:0}
.panel-grow{flex:1 1 auto;display:flex;flex-direction:column;min-height:150px;border-bottom:0}
.ph{
  display:flex;align-items:center;gap:8px;min-height:34px;padding:4px 12px;flex:0 0 auto;
  background:color-mix(in srgb,var(--sunken) 60%,var(--panel));
  border-bottom:1px solid var(--line);
  font-size:11px;font-weight:600;letter-spacing:.12em;color:var(--ink);
}
.ph i{font:500 11px/1 var(--mono);letter-spacing:.12em;color:var(--ink-3);font-style:normal}
.ph-tag{margin-left:auto;font:500 11px/1 var(--mono);letter-spacing:.04em;color:var(--ink-2);
  border:1px solid var(--line);border-radius:var(--r-xs);padding:3px 5px}
.ph-act{margin-left:auto;width:22px;height:22px;display:grid;place-items:center;border-radius:var(--r-xs);color:var(--ink-2);align-self:center}
.ph-act:hover{background:var(--raise);color:var(--ink)}
.ph-act svg{width:14px;height:14px}
.pbody{padding:12px}
.pbody-flush{padding:0;display:flex;flex-direction:column;min-height:0;flex:1 1 auto}

/* ── dropzone ──────────────────────────────────────────────────────────── */
.drop{
  border:1px dashed var(--line-2);border-radius:var(--r-md);padding:16px 12px 13px;text-align:center;
  background:var(--sunken);transition:border-color var(--t),background var(--t);
}
.drop:hover,.drop:focus-visible{border-color:var(--accent);background:var(--accent-soft)}
.drop-art{width:112px;height:78px;color:var(--ink-3);display:block;margin:0 auto 6px}
.drop-t{font-size:12.5px;font-weight:500}
.drop-s{font-size:12px;color:var(--ink-3);margin-top:3px;line-height:1.45}
.drop-btns{display:flex;gap:6px;justify-content:center;margin-top:11px}

.srccard{display:flex;gap:10px;align-items:center;margin-top:12px;padding:8px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--sunken)}
.srcthumb{width:46px;height:46px;flex:0 0 auto;border:1px solid var(--line-2);border-radius:var(--r-xs);overflow:hidden;background:var(--sheet)}
.srcthumb img{width:100%;height:100%;object-fit:cover;display:block}
.srcmeta{min-width:0;flex:1 1 auto}
.srcname{font-size:11.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.srcdims{font:400 11px/1.4 var(--mono);color:var(--ink-3)}

/* ── fields ────────────────────────────────────────────────────────────── */
.field{display:block;margin-top:11px}
.pbody>.field:first-child,.pbody>.grid2:first-child{margin-top:0}
.field>label{display:flex;align-items:baseline;gap:6px;margin-bottom:4px;font-size:11px;letter-spacing:.03em;color:var(--ink-2)}
.field>label b{margin-left:auto;font:500 11px/1 var(--mono);color:var(--ink-3)}
.field>label b.linky{color:var(--accent);cursor:pointer;text-decoration:underline;text-underline-offset:2px}
input[type="text"],input[type="number"],input[type="password"],select,textarea{
  width:100%;background:var(--sunken);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:6px 8px;font-size:12px;transition:border-color var(--t-fast),background var(--t-fast);
}
input[readonly]{color:var(--ink-2);cursor:default}
textarea{resize:vertical;line-height:1.5;font-family:var(--sans)}
textarea,#rawArea{font-family:var(--mono);font-size:11px}
input:hover,select:hover,textarea:hover{border-color:var(--line-2)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);background:var(--panel)}
input[type="number"]{font-family:var(--mono);font-variant-numeric:tabular-nums}
select{appearance:none;background-image:linear-gradient(0deg,transparent,transparent);padding-right:22px;
  background-repeat:no-repeat;background-position:right 7px center;background-size:8px 5px}
select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 5'%3E%3Cpath d='M0 0h8L4 5z' fill='%2371808F'/%3E%3C/svg%3E");
}
input[type="range"]{width:100%;height:20px;padding:0;background:none;border:0;-webkit-appearance:none;appearance:none}
input[type="range"]::-webkit-slider-runnable-track{height:2px;background:var(--line-2)}
input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;margin-top:-5px;border-radius:var(--r-xs);background:var(--accent);border:0}
input[type="range"]::-moz-range-track{height:2px;background:var(--line-2)}
input[type="range"]::-moz-range-thumb{width:12px;height:12px;border:0;border-radius:var(--r-xs);background:var(--accent)}
.keyrow{display:flex;gap:5px;align-items:center}
.keyrow input{flex:1 1 auto;min-width:0;font-family:var(--mono);font-size:11px;letter-spacing:.01em}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.grid4 .field>label{font-size:11px}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:2px 8px;margin-top:12px}
.checks-1{grid-template-columns:1fr;margin-top:0}
.chk{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--ink-2);padding:3px 0;cursor:pointer;min-width:0}
.chk:hover{color:var(--ink)}
.chk input{
  appearance:none;-webkit-appearance:none;width:13px;height:13px;flex:0 0 auto;margin:0;
  border:1px solid var(--line-2);border-radius:var(--r-xs);background:var(--sunken);position:relative;cursor:pointer;
  transition:background var(--t-fast),border-color var(--t-fast);
}
.chk input:checked{background:var(--accent);border-color:var(--accent)}
.chk input:checked::after{
  content:"";position:absolute;left:3.6px;top:.7px;width:4px;height:7.5px;
  border:solid var(--accent-ink);border-width:0 1.6px 1.6px 0;transform:rotate(40deg);
}
.chk-inline{margin:0;white-space:nowrap}
.chk span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.kv{display:flex;align-items:baseline;gap:8px;font-size:11px;color:var(--ink-2)}
.kv b{margin-left:auto;font:500 12px/1 var(--mono);color:var(--ink)}
.kv b[data-state="warn"]{color:var(--warn)}
.kv b[data-state="ok"]{color:var(--ok)}
.hint{font-size:12px;line-height:1.5;color:var(--ink-3);margin:6px 0 9px}
.sub-h{font:600 11px/1 var(--sans);letter-spacing:.1em;color:var(--ink-3);margin:14px 0 7px}
.row-act{display:flex;gap:6px;margin-top:13px}
.row-act .btn{flex:1 1 auto}
.empty-note{font-size:12px;line-height:1.6;color:var(--ink-3);padding:12px;text-align:center}

/* ── schedule table ────────────────────────────────────────────────────── */
.sch-head{
  display:flex;align-items:baseline;gap:8px;padding:8px 12px;flex:0 0 auto;
  border-bottom:1px solid var(--line);font:500 11px/1 var(--mono);color:var(--ink-3);
}
.sch-head span:last-child{margin-left:auto;color:var(--ink-2)}
.sch-scroll{overflow-y:auto;flex:1 1 auto;min-height:90px;position:relative}
.sch{width:100%;border-collapse:collapse;font-size:12px}
.sch th{
  text-align:left;font:500 11px/1 var(--sans);letter-spacing:.08em;color:var(--ink-3);
  padding:6px 12px;position:sticky;top:0;background:var(--panel);border-bottom:1px solid var(--line);z-index:1;
}
.sch th.num,.sch td.num{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
.sch td{padding:5px 12px;border-bottom:1px solid var(--line);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:118px}
.sch tr{cursor:pointer;transition:background var(--t-fast)}
.sch tr:hover td{background:var(--raise)}
.sch tr.is-sel td{background:var(--accent-soft);color:var(--ink)}
.sch .swatch{display:inline-block;width:6px;height:6px;border-radius:1px;margin-right:7px;vertical-align:1px}
.sch .tname{display:flex;align-items:center;min-width:0}
.sch .tname span{overflow:hidden;text-overflow:ellipsis}
.sch .ttype{color:var(--ink-3);font-size:11.5px}

/* ── stage ─────────────────────────────────────────────────────────────── */
.stage{position:relative;min-width:0;min-height:0;background:var(--sheet);overflow:hidden;isolation:isolate}
.canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;user-select:none;-webkit-user-select:none}
.stage[data-tool="select"] .canvas{cursor:default}
.stage[data-tool="pan"] .canvas{cursor:grab}
body.is-panning .canvas{cursor:grabbing!important}
.stage[data-tool="room"] .canvas,.stage[data-tool="wall"] .canvas,.stage[data-tool="door"] .canvas,
.stage[data-tool="measure"] .canvas,.stage[data-tool="calibrate"] .canvas{cursor:crosshair}
.stage[data-tool="text"] .canvas{cursor:text}
body.is-dragging .canvas{cursor:grabbing}

.tools{
  position:absolute;left:50%;top:27px;transform:translateX(-50%);z-index:20;
  display:flex;align-items:center;gap:2px;padding:3px;
  background:var(--raise);border:1px solid var(--line-2);border-radius:var(--r-md);box-shadow:var(--shadow);
}
.tool{width:30px;height:30px;display:grid;place-items:center;border-radius:var(--r-sm);color:var(--ink-2);transition:background var(--t-fast),color var(--t-fast)}
.tool svg{width:17px;height:17px}
.tool:hover{background:var(--sunken);color:var(--ink)}
.tool.is-on{background:var(--accent);color:var(--accent-ink)}
.tools-sep{width:1px;height:18px;background:var(--line);margin:0 3px}

.zoomer{
  position:absolute;right:12px;bottom:12px;z-index:20;display:flex;align-items:center;gap:1px;padding:3px;
  background:var(--raise);border:1px solid var(--line-2);border-radius:var(--r-md);box-shadow:var(--shadow);
}
.zval{min-width:48px;height:24px;font:500 11px/1 var(--mono);color:var(--ink-2);border-radius:var(--r-sm)}
.zval:hover{background:var(--sunken);color:var(--ink)}

.stage-empty{
  position:absolute;inset:0;display:grid;place-items:center;z-index:10;pointer-events:none;
  background:
    radial-gradient(120% 90% at 50% 40%,transparent 40%,color-mix(in srgb,var(--sheet) 85%,transparent) 100%);
}
.se-card{pointer-events:auto;text-align:center;max-width:392px;padding:26px 28px;border:1px solid var(--line);border-radius:var(--r-md);background:color-mix(in srgb,var(--panel) 82%,transparent);backdrop-filter:blur(3px)}
.se-t{font-size:16px;font-weight:600;letter-spacing:.01em}
.se-s{font-size:12px;color:var(--ink-2);margin-top:7px;line-height:1.6}
.se-btns{display:flex;gap:8px;justify-content:center;margin-top:16px}

.drag-veil{
  position:absolute;inset:0;z-index:30;display:none;place-items:center;
  background:var(--scrim);border:2px dashed var(--accent);border-radius:var(--r-sm);
  font-size:13px;font-weight:500;color:var(--ink);
}
body.is-dragover .drag-veil{display:grid}
.drop-hint{
  position:absolute;left:50%;bottom:14px;transform:translateX(-50%);z-index:22;
  padding:5px 10px;border-radius:var(--r-sm);background:var(--raise);border:1px solid var(--line-2);
  font:500 11px/1 var(--mono);color:var(--ink-2);opacity:0;transition:opacity var(--t);pointer-events:none;
}
.drop-hint.is-on{opacity:1}

/* ── SVG skins ─────────────────────────────────────────────────────────── */
/* The HUD draws under the pointer (crosshair, chips, guides) and must never
   swallow a click; only the grips are interactive. */
#hud{pointer-events:none}
#hud [data-grip]{pointer-events:auto}
.canvas text{font-family:var(--mono);font-variant-numeric:tabular-nums;pointer-events:none;user-select:none}
.rul-l{stroke:var(--line-2);stroke-width:1;shape-rendering:crispEdges}
.rul-l.maj{stroke:var(--ink-3)}
.rul-t{fill:var(--ink-3);font-size:10px;letter-spacing:.02em}
.rul-bg{fill:color-mix(in srgb,var(--panel) 92%,transparent)}
.rul-edge{stroke:var(--line-2);stroke-width:1;shape-rendering:crispEdges}

.g-min{stroke:var(--grid-min);stroke-width:1;shape-rendering:crispEdges}
.g-maj{stroke:var(--grid-maj);stroke-width:1;shape-rendering:crispEdges}
.g-axis{stroke:var(--grid-axis);stroke-width:1;shape-rendering:crispEdges}

.sheet-b{fill:none;stroke:var(--line-2);stroke-width:1;stroke-dasharray:6 5}
.sheet-s{fill:color-mix(in srgb,var(--panel) 45%,transparent)}

.rm{cursor:move}
.rm-shape{stroke-width:1.25;vector-effect:non-scaling-stroke;transition:fill-opacity var(--t)}
.rm:hover .rm-shape{fill-opacity:.42}
.rm.is-sel .rm-shape{stroke:var(--mark);stroke-width:2}
.rm.is-hot .rm-shape{fill-opacity:.5}
.rm.is-locked{cursor:not-allowed}
.rm-poly{stroke-linejoin:round}
.ink-in{stroke-dasharray:var(--len,1400);stroke-dashoffset:var(--len,1400);animation:ink 480ms var(--ease) forwards}
@keyframes ink{to{stroke-dashoffset:0}}

.wl{stroke:var(--ink);stroke-opacity:.88;stroke-linecap:butt;fill:none}
.wl-part{stroke-opacity:.62}
.wl-sel{stroke:var(--mark)!important;stroke-opacity:1!important}
.wl-c{stroke:var(--ink-3);stroke-width:1;stroke-dasharray:9 6;fill:none;vector-effect:non-scaling-stroke;opacity:.5}
.op-arc{fill:none;stroke:var(--ink-2);stroke-width:1;vector-effect:non-scaling-stroke}
.op-leaf{stroke:var(--ink);stroke-width:1.6;vector-effect:non-scaling-stroke}
.op-win{stroke:var(--ink);stroke-width:1;vector-effect:non-scaling-stroke}
.op-hit{fill:none;stroke:transparent;stroke-width:10;vector-effect:non-scaling-stroke;cursor:pointer}
.op.is-sel .op-arc,.op.is-sel .op-leaf,.op.is-sel .op-win{stroke:var(--mark)!important;stroke-width:2!important}

.img-layer{image-rendering:auto;mix-blend-mode:var(--img-blend)}

.lb-n{fill:var(--ink);font-size:11px;font-weight:500;letter-spacing:.01em;text-anchor:middle}
.lb-a{fill:var(--ink-2);font-size:9.5px;text-anchor:middle}
.lb-n.is-sel,.lb-a.is-sel{fill:var(--mark)}
#world[data-lod="name"] .lb-a,#world[data-lod="none"] .lb-a{display:none}
#world[data-lod="none"] .lb-n,#world[data-lod="none"] .lb-t{display:none}
.lb-t{fill:var(--ink-2);font-size:11px;text-anchor:middle}
.lb-t[data-kind="dimension"]{fill:var(--ink);font-size:10px}
.lb-t[data-kind="title"]{fill:var(--ink);font-size:13px;font-weight:600;letter-spacing:.04em}
.lb-halo{fill:none;stroke:var(--sheet);stroke-width:3.5;stroke-linejoin:round;opacity:.85}
.lb-hit{fill:transparent;cursor:text}

.guide{stroke:var(--accent);stroke-width:1;stroke-dasharray:4 3;vector-effect:non-scaling-stroke;opacity:.9}
.grip{fill:var(--panel);stroke:var(--mark);stroke-width:1.4;vector-effect:non-scaling-stroke}
.grip:hover{fill:var(--mark)}
.ring{fill:none;stroke:var(--mark);stroke-width:1.4;stroke-dasharray:3 3;vector-effect:non-scaling-stroke}
.rot-stem{stroke:var(--mark);stroke-width:1.2;vector-effect:non-scaling-stroke}
.rot-grip{fill:var(--panel);stroke:var(--mark);stroke-width:1.4;vector-effect:non-scaling-stroke;cursor:grab}
.marq{fill:var(--accent-soft);stroke:var(--accent);stroke-width:1;stroke-dasharray:4 3;vector-effect:non-scaling-stroke}
.dim-l{stroke:var(--mark);stroke-width:1.2;vector-effect:non-scaling-stroke}
.dim-t{fill:var(--mark);font-size:10.5px;font-weight:500}
.dim-tick{stroke:var(--mark);stroke-width:1.2;vector-effect:non-scaling-stroke}
.cr-l{stroke:var(--ink-3);stroke-width:1;stroke-dasharray:3 4;vector-effect:non-scaling-stroke;opacity:.6}
.cr-ring{fill:none;stroke:var(--accent);stroke-width:1.2;vector-effect:non-scaling-stroke;opacity:.85}
.cr-dot{fill:var(--accent)}
.preview{fill:var(--accent-soft);stroke:var(--accent);stroke-width:1.3;stroke-dasharray:5 4;vector-effect:non-scaling-stroke}

/* ── AI panel ──────────────────────────────────────────────────────────── */
.panel-ai .ph{background:linear-gradient(0deg,transparent,transparent),color-mix(in srgb,var(--accent) 7%,var(--panel))}
.runrow{display:flex;gap:7px;margin-top:13px}
.btn-run{
  flex:1 1 auto;height:36px;background:var(--accent);border-color:transparent;color:var(--accent-ink);
  font-size:13px;font-weight:600;position:relative;overflow:hidden;
}
.btn-run:hover:not([disabled]){background:var(--accent);filter:brightness(1.12)}
.btn-run[disabled]{opacity:.5;cursor:not-allowed}
.btn-run.is-busy{background:var(--raise);color:var(--ink);border-color:var(--line-2)}
.btn-run.is-busy .run-label::after{content:"";display:inline-block;width:5px;animation:dots 1.2s steps(4,end) infinite}
@keyframes dots{0%{content:""}25%{content:"·"}50%{content:"··"}75%{content:"···"}}
.btn-stop{flex:0 0 auto;height:36px;color:var(--bad);border-color:color-mix(in srgb,var(--bad) 40%,var(--line))}

.ai-log{margin-top:12px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--sunken);overflow:hidden}
.ai-log-head{display:flex;align-items:baseline;gap:8px;padding:7px 9px;border-bottom:1px solid var(--line);font-size:11px}
.ai-log-head>span:first-child{font-weight:500}
.ai-stats{margin-left:auto;font:400 11px/1 var(--mono);color:var(--ink-3)}
.ai-stream{
  max-height:132px;overflow:auto;padding:8px 9px;font:400 11px/1.6 var(--mono);
  color:var(--ink-2);white-space:pre-wrap;word-break:break-all;
}
.ai-stream:empty::before{content:"等待模型返回…";color:var(--ink-3)}
.ai-think{border-top:1px solid var(--line)}
.ai-think summary{padding:6px 9px;font-size:11px;color:var(--ink-3);cursor:pointer}
.ai-think summary:hover{color:var(--ink-2)}
.ai-think pre{margin:0;padding:0 9px 9px;max-height:150px;overflow:auto;font:400 10px/1.6 var(--mono);color:var(--ink-3);white-space:pre-wrap;word-break:break-word}
.ai-bar{height:2px;background:var(--line);overflow:hidden}
.ai-bar i{display:block;height:100%;width:0;background:var(--accent)}
/* no looping marquee: while a request is in flight the channel simply reads as open */
.ai-bar i.is-indet{width:100%}

.result{margin-top:12px;border:1px solid color-mix(in srgb,var(--accent) 34%,var(--line));border-radius:var(--r-sm);background:var(--accent-soft);padding:10px}
.result[data-tone="warn"]{border-color:color-mix(in srgb,var(--warn) 40%,var(--line));background:var(--mark-soft)}
.result[data-tone="bad"]{border-color:color-mix(in srgb,var(--bad) 42%,var(--line));background:color-mix(in srgb,var(--bad) 10%,transparent)}
.result-head{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.result-head b{font-size:12px;white-space:nowrap}
.result-head span{margin-left:auto;white-space:nowrap}
.result-note{font-size:11.5px;line-height:1.55;color:var(--ink-2);margin-top:5px}
.result-act{display:flex;align-items:center;gap:8px;margin-top:10px;flex-wrap:wrap}

.fold{margin-top:12px;border-top:1px solid var(--line);padding-top:9px}
.fold summary{font-size:11px;color:var(--ink-3);cursor:pointer;letter-spacing:.02em}
.fold summary:hover{color:var(--ink-2)}
.fold textarea{margin-top:8px}
.fold .btn{margin-top:7px}

.refine{display:flex;gap:7px;align-items:flex-start}
.refine textarea{flex:1 1 auto;min-width:0}
.refine .btn{flex:0 0 auto;height:auto;align-self:stretch;padding:0 12px;min-width:62px;white-space:nowrap;word-break:keep-all}

/* ── inspector ─────────────────────────────────────────────────────────── */
.panel-insp .pbody{padding-bottom:16px}
.aligngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}
.aligngrid .ib{width:100%;height:28px;border:1px solid var(--line);background:var(--sunken)}
.aligngrid .ib:hover{border-color:var(--accent);color:var(--accent)}
.aligngrid-2{grid-template-columns:1fr 1fr}
.aligngrid-2 .btn{width:100%}

/* ── statusbar ─────────────────────────────────────────────────────────── */
.statusbar{
  display:flex;align-items:center;gap:10px;padding:0 12px;
  background:var(--panel);border-top:1px solid var(--line-2);
  font:400 11px/1 var(--mono);color:var(--ink-3);white-space:nowrap;overflow:hidden;
}
.st-hint{color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;font-family:var(--sans);font-size:11px}
.st-spacer{flex:1 1 auto}
.st{display:inline-flex;align-items:baseline;gap:4px;flex:0 0 auto}
.st i{font-style:normal;color:var(--ink-3);opacity:.85}
.st b{font-weight:500;color:var(--ink-2)}
.st-zoom{min-width:44px;text-align:right;color:var(--ink-2)}

/* ── toasts ────────────────────────────────────────────────────────────── */
.toasts{position:fixed;left:50%;bottom:calc(var(--h-foot) + 14px);transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{
  pointer-events:auto;min-width:260px;max-width:min(560px,88vw);
  display:flex;gap:10px;align-items:flex-start;padding:10px 12px;
  background:var(--raise);border:1px solid var(--line-2);border-left-width:1px;border-radius:var(--r-md);
  box-shadow:var(--shadow);animation:toast-in 200ms var(--ease);
}
@keyframes toast-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.toast.is-out{animation:toast-out 160ms var(--ease) forwards}
@keyframes toast-out{to{opacity:0;transform:translateY(4px)}}
.toast-dot{width:6px;height:6px;border-radius:50%;margin-top:6px;flex:0 0 auto;background:var(--accent)}
.toast[data-kind="ok"] .toast-dot{background:var(--ok)}
.toast[data-kind="warn"] .toast-dot{background:var(--warn)}
.toast[data-kind="bad"] .toast-dot{background:var(--bad)}
.toast-body{min-width:0;flex:1 1 auto}
.toast-body b{display:block;font-size:12px;font-weight:600}
.toast-body p{font-size:12px;line-height:1.55;color:var(--ink-2);margin-top:3px;word-break:break-word}
.toast-body code{font-family:var(--mono);font-size:10.5px;background:var(--sunken);padding:1px 4px;border-radius:var(--r-xs)}
.toast-act{display:flex;gap:6px;margin-top:8px}
.toast-x{width:20px;height:20px;flex:0 0 auto;color:var(--ink-3);display:grid;place-items:center;border-radius:var(--r-xs)}
.toast-x:hover{background:var(--sunken);color:var(--ink)}
.toast-x svg{width:12px;height:12px}

/* ── dialogs ───────────────────────────────────────────────────────────── */
.dlg{
  border:1px solid var(--line-2);border-radius:var(--r-lg);background:var(--panel);color:var(--ink);
  padding:0;width:min(420px,92vw);box-shadow:var(--shadow);
}
.dlg-wide{width:min(720px,94vw)}
.dlg::backdrop{background:var(--scrim);backdrop-filter:blur(2px)}
.dlg form{padding:18px 20px 16px}
.dlg h3{font-size:15px;font-weight:600;letter-spacing:.01em}
.dlg-p{font-size:12.5px;line-height:1.6;color:var(--ink-2);margin-top:8px}
.dlg-p b{font-family:var(--mono);color:var(--ink)}
.dlg-hint{font-size:12px;line-height:1.55;color:var(--ink-3);margin-top:8px}
.dlg-act{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}
.help-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;margin-top:14px}
.help-grid h4{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--ink-2);margin-bottom:8px}
.help-grid h4:not(:first-child){margin-top:16px}
.help-ol{margin:0;padding-left:18px;font-size:12px;line-height:1.75;color:var(--ink-2)}
.help-ol b{color:var(--ink)}
.help-ul{margin:0;padding-left:16px;font-size:12px;line-height:1.7;color:var(--ink-2)}
.keys{display:grid;grid-template-columns:auto 1fr;gap:5px 12px;font-size:12px;align-items:baseline}
.keys dt{font:500 11px/1.5 var(--mono);color:var(--ink);background:var(--sunken);border:1px solid var(--line);border-radius:var(--r-xs);padding:2px 6px;justify-self:start;white-space:nowrap}
.keys dd{margin:0;color:var(--ink-2)}

/* ── drawer toggles (narrow viewports) ─────────────────────────────────── */
.rail-toggle{
  display:none;position:absolute;top:27px;z-index:21;width:32px;height:32px;place-items:center;
  background:var(--raise);border:1px solid var(--line-2);border-radius:var(--r-md);color:var(--ink-2);box-shadow:var(--shadow);
}
.rail-toggle:hover{color:var(--ink)}
.rail-toggle svg{width:16px;height:16px}
.rail-toggle[data-rail="left"]{left:12px}
.rail-toggle[data-rail="right"]{right:12px}
body[data-left="0"] .rail-toggle[data-rail="left"],
body[data-right="0"] .rail-toggle[data-rail="right"]{display:grid}
.scrim{position:fixed;inset:0;z-index:35;background:var(--scrim);opacity:0;pointer-events:none;transition:opacity var(--t)}
body[data-drawer] .scrim{opacity:1;pointer-events:auto}

/* ── print ─────────────────────────────────────────────────────────────── */
.print-sheet{display:none}
@media print{
  html,body{height:auto;overflow:visible;background:#fff}
  .app,.toasts,.scrim{display:none!important}
  .print-sheet{display:block}
  .print-sheet svg{width:100%;height:auto}
  @page{margin:12mm}
}

/* ── responsive ────────────────────────────────────────────────────────── */
@media (max-width:1380px){:root{--w-right:318px}}
@media (max-width:1240px){:root{--w-left:250px;--w-right:300px}.brand-text i{display:none}}
@media (max-width:1120px){
  .body{grid-template-columns:minmax(0,1fr)}
  .rail{position:fixed;top:var(--h-top);bottom:var(--h-foot);width:min(88vw,326px);z-index:40;
    box-shadow:var(--shadow);transition:transform var(--t),opacity var(--t)}
  .rail-left{left:0;transform:translateX(-102%)}
  .rail-right{right:0;transform:translateX(102%);border-left:1px solid var(--line-2)}
  body[data-drawer="left"] .rail-left{transform:none;opacity:1;pointer-events:auto}
  body[data-drawer="right"] .rail-right{transform:none;opacity:1;pointer-events:auto}
  body[data-left="0"] .rail-left,body[data-right="0"] .rail-right{display:flex;opacity:1}
  body[data-left="0"] .body,body[data-right="0"] .body{grid-template-columns:minmax(0,1fr)}
  .rail-toggle{display:grid}

  .zoomer{bottom:auto;top:68px;right:12px}
  .tools{top:27px}
}
@media (max-width:820px){
  :root{--h-top:50px;--h-foot:28px}
  .brand-text i{display:none}
  .chips{display:none}
  .proj{max-width:none}
  .tools{gap:1px;padding:2px}
  .tool{width:28px;height:28px}
  .tool svg{width:15px;height:15px}
  #stCursor,#stSnap,#stSel{display:none}
  .help-grid{grid-template-columns:1fr;gap:16px}
  .stage-empty{place-items:end center}
  .se-card{margin-bottom:22px}
}
@media (max-width:560px){
  .zoomer{display:none}
  .proj-label{display:none}
  #stRooms{display:none}
  .brand-text b{font-size:14px}
  .se-card{padding:20px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .ink-in{stroke-dashoffset:0!important}
}