/* Existing CADD owner. The model leads; controls follow the selected object. */
:root{--paper:#081525;--panel:#102236;--line:#304963;--ink:#edf5ff;--muted:#b1c5dd;--accent:#4cc2ff;--stage:#0e2134;--input:#091a2b;color-scheme:dark;background:var(--paper);color:var(--ink)}
:root[data-theme=light]{--paper:#edf2f9;--panel:#fff;--line:#a7b8d0;--ink:#102e57;--muted:#38577a;--accent:#1847bb;--stage:#dce6f2;--input:#f4f7fc;color-scheme:light}
body{background:var(--paper);color:var(--ink);font-variant-numeric:tabular-nums}
button,input,select,textarea{color:var(--ink);background:var(--input);border-color:var(--line)}
button{border-radius:12px;min-width:44px;min-height:44px;font-weight:550}
button:hover{background:color-mix(in srgb,var(--accent) 14%,var(--panel))}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,canvas:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
header{min-height:80px;padding:12px 24px;gap:12px;border-bottom:1px solid var(--line);background:var(--paper)}
header img{width:142px;height:44px;padding:4px;object-fit:contain}
header>span:not(#save){font-size:11px;color:var(--muted);letter-spacing:.15em}
header .experience{max-width:194px}header .experience select{font-size:13px;border-radius:12px}
#save{font-size:12px;flex:1;max-width:340px;line-height:1.5;color:var(--muted)}
#miles{margin-left:0;background:linear-gradient(125deg,#3b2af2,#4164f6);border-color:#637bff;color:#fff;box-shadow:0 4px 16px #4164f62b}
#settings{margin-left:auto;font-size:13px}
#welcome{background:radial-gradient(ellipse at 12% 78%,#4164f623,transparent 60%);padding:clamp(32px,7vw,100px);gap:60px;align-items:center}
#welcome .eyebrow{color:var(--accent);letter-spacing:.22em}
#welcome h1{font-size:clamp(48px,5vw,78px);letter-spacing:-.055em;font-weight:550}
#welcome .intro p:not(.eyebrow),#welcome small{color:var(--muted)}
.choices button{background:var(--panel);border-color:var(--line);box-shadow:0 12px 32px #0011330b}
.choices button:first-child{border-color:#4164f6;background:linear-gradient(115deg,#142d65,#233176);color:#fff}
.choices button:first-child span{color:#d0e1ff}.choices button span{color:var(--muted)}
#workspace>nav{align-items:center;padding:10px 24px;border-color:var(--line);background:var(--paper);gap:8px}
#workspace>nav button{font-size:13px;padding:10px 14px}
#workspace>nav #present{background:#4164f6;border-color:#637bff;color:#fff}
#source-strip{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 24px;border-bottom:1px solid var(--line);background:var(--panel);min-height:70px}
.source-kicker{font-size:10px;font-weight:700;letter-spacing:.14em;color:var(--accent)}
#source-status{margin:5px 0 0;line-height:1.5;font-size:12px;color:var(--muted);max-width:100ch}
#source-strip[data-state=review]{border-left:3px solid #bc8130}
#source-strip button{font-size:12px;flex:none}
.work{display:grid;grid-template-columns:minmax(0,1fr) 288px;grid-template-rows:minmax(460px,1fr) auto;min-height:640px;height:calc(100dvh - 260px);gap:0}
.viewport{grid-column:1;grid-row:1;background:radial-gradient(ellipse at 48% 35%,color-mix(in srgb,var(--stage) 80%,#4164f6),var(--stage));min-height:460px;height:auto}
.model-panels{height:100%;width:100%;display:grid;grid-template-columns:1fr;min-width:0}
.model-panels.split{grid-template-columns:minmax(0,1fr) minmax(0,.72fr)}
.primary-pane,#plan-pane{position:relative;min-width:0;min-height:0;overflow:hidden}
#plan-pane{border-left:1px solid var(--line);background:color-mix(in srgb,var(--paper) 65%,var(--stage))}
#plan-canvas{height:100%;width:100%;outline-offset:-4px}
.plan-title{position:absolute;left:18px;top:18px;font-size:11px;letter-spacing:.12em;color:var(--ink);pointer-events:none}
.plan-title span{display:block;letter-spacing:0;color:var(--muted);font-size:11px;margin-top:6px}
.plan-source{position:absolute;bottom:24px;left:18px;color:var(--muted);font-size:11px;pointer-events:none}
.viewtools{left:16px;top:14px;z-index:2;max-width:calc(100% - 32px);padding:7px 7px 12px;background:color-mix(in srgb,var(--panel) 94%,transparent);border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 32px #00112624;gap:5px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--accent) var(--input)}
.viewtools button,.viewtools label{flex:none;white-space:nowrap}
.viewtools button{font-size:12px;min-height:44px;padding:8px 11px;border-radius:9px}
.viewtools button[aria-pressed=true]{background:#203f8e;border-color:#678aff;color:#fff}
.viewtools label,.viewtools select{font-size:12px;color:var(--ink);background:var(--input)}
.canvas-label{left:22px;bottom:20px;max-width:calc(100% - 44px);padding:12px 16px;border:1px solid var(--line);border-radius:14px;background:color-mix(in srgb,var(--panel) 94%,transparent)}
.canvas-label b{font-size:18px;font-weight:550;letter-spacing:-.02em;color:var(--ink)}
.canvas-label span{font-size:11px;line-height:1.5;color:var(--muted);overflow-wrap:anywhere}
#objects{grid-column:1/-1;grid-row:2;display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:12px 20px;max-height:none;background:var(--panel);border-top:1px solid var(--line)}
#objects h2{font-size:12px;margin:0;color:var(--muted)}
#experience-note{border:0;padding:0;margin:0;font-size:11px;color:var(--muted)}
#object-list{display:flex;flex:1 1 100%;gap:8px;overflow-x:auto;padding:4px;scrollbar-width:thin}
#object-list button{width:auto;max-width:280px;flex:none;margin:0;font-size:13px;white-space:normal;min-height:44px}
#quantities{margin:0;font-size:11px;color:var(--muted)}
#objects>p:not(#experience-note):not(#quantities){margin:0;font-size:11px;color:var(--muted)}
#objects>button{font-size:12px;margin:0}
#properties{grid-column:2;grid-row:1;max-height:none;padding:20px;background:var(--panel);border-left:1px solid var(--line);overscroll-behavior:contain;scrollbar-gutter:stable}
#properties h2{font-size:18px;font-weight:550;margin:0 0 14px;letter-spacing:-.025em;overflow-wrap:anywhere;color:var(--ink)}
#properties h3{font-size:13px;color:var(--ink)}
#properties p,#properties label.field{color:var(--muted);font-size:12px}
#properties input{min-height:44px;font-size:14px;font-variant-numeric:tabular-nums}
#properties button{font-size:12px;padding:10px 12px;margin:4px 2px}
dialog{background:var(--panel);color:var(--ink);border-color:var(--line);max-height:calc(100dvh - 48px);padding:24px;overflow-y:auto;overscroll-behavior:contain}
dialog>form,.dialog-status{background:var(--panel)}dialog>form{top:-24px}
dialog p,dialog label.field,details{color:var(--muted)}dialog a{color:var(--accent)}dialog h2{letter-spacing:-.03em}
dialog button{white-space:normal;overflow-wrap:anywhere}dialog input,dialog select,dialog textarea{min-height:44px}
.dialog-status{border-color:var(--accent);color:var(--ink)}
footer{background:var(--paper);border-color:var(--line);color:var(--muted);gap:12px;padding:12px 24px}
footer>span:first-child{color:var(--ink);font-size:12px;flex:1;line-height:1.6}
.error,footer>span.error{color:#ffb99e}:root[data-theme=light] .error,:root[data-theme=light] footer>span.error{color:#9f3018}
:root[data-theme=light] .selected{background:#e0eaff!important;border-color:#4164f6!important}
:root[data-theme=light] #present-panel,:root[data-theme=light] #present-inspect,:root[data-theme=light] #present-status{background:var(--paper);color:var(--ink)}
:root[data-theme=light] #present-caption,:root[data-theme=light] #present-panel .compare-label{background:#102e57ed;color:#fff}
:root[data-motion=reduce] *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
@media(min-width:1800px){.work{grid-template-columns:minmax(0,1fr) 320px}.viewtools{max-width:calc(100% - 40px)}}
@media(max-width:1100px){header{gap:8px;padding:12px 16px}.work{grid-template-columns:minmax(0,1fr) 264px}.viewtools{max-width:calc(100% - 24px);left:12px}.viewtools button{font-size:12px}#source-strip{padding:10px 16px}#workspace>nav{padding:10px 16px}}
@media(max-width:760px){
 #workspace>nav{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;padding-bottom:14px}#workspace>nav button{flex:none;white-space:nowrap}
 header{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:8px}header #brand{grid-column:1;grid-row:1}header #settings{grid-column:2;grid-row:1;margin:0}header #miles{grid-column:3;grid-row:1}header #home{grid-column:1;grid-row:2}header .experience{grid-column:2/4;grid-row:2}header #save{grid-column:1/-1;grid-row:3}header #gap-rule{grid-column:1/-1;grid-row:4}
 header img{width:118px;height:40px}header #home{font-size:12px;min-height:44px}header #settings{font-size:12px;padding:9px}header #miles{padding:10px;font-size:12px}
 header .experience{order:5;flex:1 1 45%;max-width:none}header #save{order:6;flex:1 1 45%;max-width:none;font-size:11px}header #gap-rule{order:7;font-size:12px}
 #welcome{grid-template-columns:1fr;padding:32px 22px;gap:24px}#welcome h1{font-size:52px}#welcome .intro p:not(.eyebrow){font-size:17px}
 .work{grid-template-columns:1fr;grid-template-rows:560px auto auto;height:auto;min-height:0}.viewport{grid-column:1;grid-row:1;min-height:560px;height:560px}
 #properties{grid-column:1;grid-row:2;border-left:0;border-top:1px solid var(--line);max-height:none;padding:22px;overflow:visible}
 #properties .field{display:inline-block;width:calc(50% - 10px);vertical-align:top;margin-right:10px}#properties .field input{width:100%}
 #objects{grid-column:1;grid-row:3;padding:16px;gap:10px;max-height:none}#object-list{flex-basis:100%}
 #source-strip{align-items:flex-start;flex-direction:column;gap:8px}#source-status{font-size:11px}
 .viewtools{flex-wrap:nowrap;max-width:calc(100% - 20px);left:10px;overflow-x:auto;padding:7px 7px 12px;scrollbar-color:var(--accent) var(--input)}
 .viewtools button,.viewtools label{flex:none;white-space:nowrap}.viewport::after{content:'Swipe view controls · Select an object for dimensions';top:90px;color:var(--muted)}
 .model-panels.split{grid-template-columns:1fr;grid-template-rows:1fr 1fr}.viewport:has(.model-panels.split){height:860px;min-height:860px;grid-row:1}.work:has(.model-panels.split){grid-template-rows:860px auto auto}
 #plan-pane{border-left:0;border-top:1px solid var(--line)}.canvas-label b{font-size:16px}.canvas-label{padding:10px 12px;bottom:16px}
 dialog{width:calc(100vw - 24px);max-height:calc(100dvh - 24px);padding:20px}dialog>form{top:-20px}dialog button{margin:5px 2px}
 footer{padding:12px 16px max(16px,env(safe-area-inset-bottom));align-items:flex-start;flex-direction:column}footer>span:last-child{font-size:10px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media(forced-colors:active){button,input,select,aside,#source-strip{border:1px solid CanvasText}.selected{outline:2px solid Highlight}.canvas-label{background:Canvas;color:CanvasText}}