:root{color-scheme:dark;--bg:#14181a;--panel:#191d1c;--panel-soft:#202725;--line:#39413e;--ink:#e8e4da;--muted:#aab5b0;--blue:#9ec4d0;--brick:#cf805d;--space-inner:8px;--space-between:25px;--space-section:73px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 'Manrope',sans-serif}
button,input,select{font:inherit}
button{cursor:pointer}
button:disabled{opacity:.45;cursor:not-allowed}
a{color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.skip-link{position:absolute;top:-80px;left:16px;z-index:20;padding:12px;background:var(--ink);color:var(--bg)}
.skip-link:focus{top:12px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;padding:16px clamp(16px,4vw,64px);border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:8px;font:800 22px/1 'Manrope',sans-serif;letter-spacing:-.05em;text-decoration:none;white-space:nowrap}
.brand img{width:30px;height:24px;flex:none}
.brand span{color:var(--brick)}
.topbar-note,.eyebrow{margin:0;color:var(--blue);font:11px/1.5 'IBM Plex Mono',monospace;letter-spacing:.09em}
.back-link{color:var(--muted);font:12px/1.5 'IBM Plex Mono',monospace;text-underline-offset:4px;white-space:nowrap}
.page{max-width:1680px;margin:0 auto;padding:50px clamp(16px,4vw,64px) var(--space-section)}
.intro{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(270px,.7fr);align-items:end;gap:var(--space-section);padding-bottom:30px;border-bottom:1px solid var(--line)}
.intro h1{max-width:780px;margin:14px 0 0;font:600 clamp(32px,4.2vw,62px)/1.07 'Manrope',sans-serif;letter-spacing:-.055em}
.intro h1 em{color:var(--blue);font-style:normal}
.intro>p{max-width:390px;margin:0;color:var(--muted)}
.preview-note{margin:25px 0 38px;padding:12px 16px;border-left:2px solid var(--brick);background:var(--panel);color:var(--muted)}
.preview-note strong{color:var(--ink)}
.mobile-steps{display:none}
.workspace{display:grid;grid-template-columns:minmax(230px,280px) minmax(0,1fr) minmax(265px,320px);gap:24px;align-items:start}
.sidebar,.inspector{min-width:0;padding-top:12px;border-top:1px solid var(--line)}
.pane-title{margin-bottom:25px}
.pane-title h2,.drawing-head h2,.review-head h2{margin:6px 0 0;font:600 21px/1.2 'Manrope',sans-serif;letter-spacing:-.02em}
.pane-section{margin-top:25px;padding-top:25px;border-top:1px solid var(--line)}
.pane-section h3,.inspector h3{margin:0 0 12px;font:600 15px/1.35 'Manrope',sans-serif}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}
.section-title h3{margin:0}
.field-label,.inspector label{display:block;margin:0 0 7px;color:var(--blue);font:11px/1.4 'IBM Plex Mono',monospace}
input:not([type=file]),select{width:100%;min-width:0;min-height:44px;padding:9px 11px;border:1px solid var(--line);border-radius:5px;background:var(--panel-soft);color:var(--ink);outline:none}
input:not([type=file]):focus,select:focus{border-color:var(--blue)}
input[type=number]{font-variant-numeric:tabular-nums}
.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.field-grid .full{grid-column:1/-1}
.field{min-width:0}
.field small{display:block;margin-top:4px;color:var(--muted);font:11px/1.45 'IBM Plex Mono',monospace}
.field-stack{display:grid;gap:14px}
.text-button,.plain-button{min-height:44px;padding:7px 0;border:0;background:transparent;color:var(--blue);font:12px/1.4 'IBM Plex Mono',monospace}
.plain-button{color:var(--muted);text-decoration:underline;text-underline-offset:4px}
.text-button:hover,.plain-button:hover{color:var(--ink)}
.small-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 13px;border:1px solid var(--line);border-radius:5px;background:var(--panel);color:var(--ink);font:12px/1.4 'IBM Plex Mono',monospace;text-align:center;text-decoration:none}
.small-button:hover{border-color:var(--blue)}
.primary-button{min-height:46px;padding:10px 17px;border:1px solid var(--brick);border-radius:5px;background:var(--brick);color:#151819;font:600 12px/1.4 'IBM Plex Mono',monospace}
.primary-button:hover{background:#df8c67}
.floor-list,.room-list{display:grid;gap:7px}
.room-add-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0 0 12px}
.room-add-choices[hidden]{display:none}
.room-add-choices .small-button{padding-inline:8px}
.floor-row,.room-row{display:flex;min-width:0;gap:6px}
.floor-row>button:first-child,.room-row>button:first-child{display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0;min-height:46px;flex:1;padding:8px 11px;border:1px solid var(--line);border-radius:5px;background:var(--panel);color:var(--ink);text-align:left}
.floor-row>button:first-child[aria-pressed=true],.room-row>button:first-child[aria-pressed=true]{border-color:var(--blue);background:#243136}
.room-row small{flex:none;color:var(--muted);font:10px/1.2 'IBM Plex Mono',monospace}
.row-remove{width:44px;min-width:44px;min-height:44px;border:1px solid var(--line);border-radius:5px;background:transparent;color:var(--muted);font-size:18px}
.row-remove:hover{border-color:var(--brick);color:var(--brick)}
.help{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.55}
.drawing{min-width:0}
.drawing-head,.review-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:17px}
.drawing-actions,.review-actions{display:flex;flex-wrap:wrap;gap:8px}
.canvas-wrap{height:clamp(380px,45vw,650px);min-width:0;border:1px solid var(--line);border-radius:5px;background:#1a2223;overflow:hidden}
#plan-svg{display:block;width:100%;height:100%;touch-action:none;cursor:grab;user-select:none}
#plan-svg.is-dragging{cursor:grabbing}
#plan-svg.is-drawing{cursor:crosshair}
#plan-svg.is-attaching{cursor:crosshair}
.draw-controls{border-left:2px solid var(--brick);padding-left:14px}
.draw-controls .help{margin:8px 0 12px}
.draw-count{margin:0 0 12px;color:var(--blue);font:12px/1.4 'IBM Plex Mono',monospace}
.draw-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0 0 12px;color:var(--blue);font:12px/1.4 'IBM Plex Mono',monospace}
.draw-toolbar[hidden]{display:none}
.canvas-legend{display:flex;flex-wrap:wrap;gap:17px;margin-top:13px;color:var(--muted);font:11px/1.4 'IBM Plex Mono',monospace}
.canvas-legend span{display:inline-flex;align-items:center;gap:7px}
.canvas-legend i{display:inline-block;width:15px;height:10px;border:2px solid var(--blue)}
.canvas-legend .legend-opening{border-color:var(--brick)}
.canvas-legend .legend-furniture{background:#334a4f;border-color:#78aab9}
.inspector .pane-title{margin-bottom:16px}
.inspector-tabs{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-bottom:16px}
.inspector-tabs button{min-height:44px;padding:8px;border:1px solid var(--line);border-radius:5px;background:var(--panel);color:var(--muted);font:12px/1.4 'IBM Plex Mono',monospace}
.inspector-tabs button[aria-pressed=true]{border-color:var(--blue);background:#243136;color:var(--ink)}
.inspector-panel[hidden]{display:none}
.inspector .pane-section{margin-top:16px;padding-top:16px}
.inspector .pane-section:first-child{margin-top:0;padding-top:0;border-top:0}
.inspector .field-grid,.inspector .field-stack{gap:9px}
.control-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}
.furniture-add-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:8px;margin-top:14px}
.furniture-add-row .small-button{white-space:nowrap}
.object-editor,.object-list-section{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.object-editor .section-title{margin-bottom:10px}
.object-editor .section-title h3{margin:0}
.object-delete{min-height:30px;padding:3px 0;color:var(--brick)}
.object-editor .control-actions{margin-top:10px}
.object-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;max-height:145px;overflow-y:auto}
.object-choice{min-width:0;min-height:44px;overflow:hidden;padding:8px 11px;border:1px solid var(--line);border-radius:5px;background:var(--panel);color:var(--ink);text-align:left;text-overflow:ellipsis;white-space:nowrap}
.object-choice[aria-pressed=true]{border-color:var(--blue)}
.custom-contour .help{margin:-4px 0 12px}
.vertex-heading,.vertex-row{display:grid;grid-template-columns:18px repeat(2,minmax(0,1fr)) 44px 44px;align-items:center;gap:6px}
.vertex-heading{margin:0 0 5px;color:var(--blue);font:10px/1.4 'IBM Plex Mono',monospace}
.vertex-list{display:grid;gap:6px}
.vertex-row>span{color:var(--muted);font:11px/1.4 'IBM Plex Mono',monospace}
.vertex-row input:not([type=file]){min-height:44px;padding:7px;font:12px/1.4 'IBM Plex Mono',monospace}
.vertex-row button{width:44px;height:44px;border:1px solid var(--line);border-radius:5px;background:var(--panel);color:var(--ink);font-size:16px}
.vertex-row button:hover{border-color:var(--blue)}
.vertex-row button:disabled{opacity:.4}
.inspector input[readonly]{color:var(--muted);cursor:default}
.wall-editor .field-stack{gap:10px}
.wall-editor .help{margin:9px 0 0}
.bend-editor .help{margin:0 0 10px}
.bend-list{display:grid;gap:6px;margin-bottom:10px}
.bend-row{display:grid;grid-template-columns:18px repeat(2,minmax(0,1fr)) 44px;align-items:center;gap:6px}
.bend-row.is-active{border-radius:5px;background:#293a3b;box-shadow:0 0 0 6px #293a3b}
.bend-row.is-active>span{color:var(--brick)}
.bend-marker.is-active .bend-marker-disc{stroke:#f2e6da;stroke-width:3}
.bend-row>span{color:var(--muted);font:11px/1.4 'IBM Plex Mono',monospace}
.bend-row input:not([type=file]){min-height:44px;padding:7px;font:12px/1.4 'IBM Plex Mono',monospace}
.bend-row button{width:44px;height:44px;border:1px solid var(--line);border-radius:5px;background:var(--panel);color:var(--ink);font-size:16px}
.bend-row button:hover{border-color:var(--brick)}
.read-only-note{padding:12px;border-left:2px solid var(--blue);background:var(--panel);color:var(--muted)}
.review{margin-top:var(--space-section);padding-top:25px;border-top:1px solid var(--line)}
.review-head>p{margin:0;color:var(--muted);font:11px/1.5 'IBM Plex Mono',monospace}
.review-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin-top:20px;background:var(--line);border:1px solid var(--line)}
.passage-editor>.small-button{margin-top:10px}
.connection-row{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.connection-row strong{font:600 13px/1.4 'Manrope',sans-serif}
.review-summary>div{min-width:0;padding:15px;background:var(--bg)}
.review-summary strong{display:block;font:600 22px/1.2 'Manrope',sans-serif}
.review-summary span{color:var(--muted);font:11px/1.4 'IBM Plex Mono',monospace}
.review-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 25px;margin:22px 0 0;padding:0;list-style:none}
.review-list li{padding-left:12px;border-left:2px solid var(--brick);color:var(--muted)}
.review-list li.is-ok{border-color:var(--blue)}
.review-actions{align-items:center;margin-top:25px}
.versions{margin-top:25px;border-top:1px solid var(--line)}
.version-row{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;padding:9px 0;border-bottom:1px solid var(--line)}
.version-row span{color:var(--muted);font:11px/1.5 'IBM Plex Mono',monospace}
.version-row button{min-height:44px;padding:5px 12px;border:1px solid var(--line);border-radius:4px;background:var(--panel);color:var(--ink)}
.version-row button[aria-pressed=true]{border-color:var(--blue)}
.footer{display:flex;justify-content:space-between;gap:20px;padding:24px clamp(16px,4vw,64px);border-top:1px solid var(--line);color:var(--muted);font:11px/1.5 'IBM Plex Mono',monospace}
.footer a{color:var(--blue)}
@media(max-width:1250px){.workspace{grid-template-columns:minmax(210px,260px) minmax(0,1fr)}.inspector{grid-column:2}.drawing{grid-column:2;grid-row:1}.sidebar{grid-row:1/span 2}.canvas-wrap{height:470px}}
@media(max-width:720px){.topbar-note{display:none}.page{padding-top:36px}.intro{grid-template-columns:1fr;gap:15px}.intro>p{max-width:680px}.mobile-steps{display:flex;gap:12px;overflow-x:auto;padding:0 0 12px;margin-bottom:25px;border-bottom:1px solid var(--line);scrollbar-width:thin}.mobile-steps a{flex:none;color:var(--blue);font:11px/1.4 'IBM Plex Mono',monospace;text-decoration:none}.workspace{display:flex;flex-direction:column;gap:30px}.sidebar,.drawing,.inspector{width:100%}.sidebar{order:1}.drawing{order:2}.inspector{order:3}.canvas-wrap{height:360px}.review-summary{grid-template-columns:1fr 1fr}.review-list{grid-template-columns:1fr}.review-head{align-items:start;flex-direction:column}}
@media(max-width:440px){.topbar{min-height:68px}.back-link{font-size:11px}.canvas-wrap{height:300px}.drawing-head{align-items:start;flex-direction:column}.review-summary{grid-template-columns:1fr 1fr}.footer{flex-direction:column}.field-grid{gap:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}