/* Layout: one workbench. Stepper strip on top, one 3D stage, one side panel whose content follows the step. */
:root{
  --bg:#ECEFEA; --surface:#F8F9F6; --ink:#1E2B27; --muted:#5C6B66; --line:#D2D9D3;
  --accent:#C9741F; --accent-soft:#F3E2CC; --north:#C2412B; --stage-a:#E2E8E1; --stage-b:#C7D1C8;
  --good:#2E7D52; --good-bg:#DDEFE3; --warn:#9A6A0A; --warn-bg:#F5EACB; --on-accent:#FFFFFF;
  --shadow:0 6px 24px rgba(30,43,39,.12);
  --f-display:"Marcellus","Georgia",serif;
  --f-body:"Hind","Segoe UI",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#111715; --surface:#19211F; --ink:#E4EBE7; --muted:#93A39D; --line:#2B3633;
  --accent:#E39A4B; --accent-soft:#3A2A19; --north:#E8735C; --stage-a:#1C2523; --stage-b:#0E1412;
  --good:#5DBB86; --good-bg:#17301F; --warn:#D9AE4B; --warn-bg:#33290F; --on-accent:#1A120A;
  --shadow:0 6px 24px rgba(0,0,0,.45); color-scheme:dark }}
:root[data-theme="dark"]{
  --bg:#111715; --surface:#19211F; --ink:#E4EBE7; --muted:#93A39D; --line:#2B3633;
  --accent:#E39A4B; --accent-soft:#3A2A19; --north:#E8735C; --stage-a:#1C2523; --stage-b:#0E1412;
  --good:#5DBB86; --good-bg:#17301F; --warn:#D9AE4B; --warn-bg:#33290F; --on-accent:#1A120A;
  --shadow:0 6px 24px rgba(0,0,0,.45); color-scheme:dark }

html,body{height:100%}
body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.5}
*{box-sizing:border-box}
[hidden]{display:none!important}
button,input{font:inherit;color:inherit}
button,label,.zchip,.act{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
body{-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
model-viewer{container-type:size;width:100%;height:100%;background:transparent;--poster-color:transparent}
.toast{position:absolute;left:50%;top:60px;transform:translateX(-50%);max-width:calc(100% - 24px);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px 14px;font-size:12.5px;box-shadow:var(--shadow);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;pointer-events:none}

.compass{position:absolute;top:12px;right:12px;width:104px;display:flex;flex-direction:column;align-items:center;gap:6px;user-select:none}
.dial{width:92px;height:92px;border-radius:50%;background:var(--surface);box-shadow:var(--shadow);border:1px solid var(--line);cursor:grab;touch-action:none}
.dial svg{width:100%;height:100%;display:block}
.hdg{font-family:var(--f-mono);font-size:11px;background:var(--surface);padding:1px 8px;border-radius:10px;border:1px solid var(--line);font-variant-numeric:tabular-nums}
.seg{display:flex;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:2px;box-shadow:var(--shadow)}
.seg button{border:0;background:transparent;font-size:12px;min-height:32px;padding:4px 12px;border-radius:999px;cursor:pointer;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--surface)}
.hud{position:absolute;z-index:120;left:0;right:0;bottom:0;padding:0 12px calc(12px + env(safe-area-inset-bottom,0px));display:grid;gap:8px;pointer-events:none}
.hud>*{pointer-events:auto}
.acts{display:flex;gap:6px;flex-wrap:wrap}
.act{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;min-height:44px;padding:6px 16px;user-select:none;font-size:13px;font-weight:500;cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,.14);display:inline-flex;align-items:center}
.act[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft)}
.act.ar{position:absolute;left:12px;top:12px;background:var(--ink);color:var(--surface);border-color:var(--ink)}
model-viewer.in-ar .noar,model-viewer:not(.in-ar) .aronly{display:none}
.arhint{justify-self:start;background:var(--ink);color:var(--surface);font-size:12px;padding:5px 12px;border-radius:999px;box-shadow:0 2px 8px rgba(0,0,0,.3)}
.rail{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;margin:0 -12px;padding:2px 12px;touch-action:pan-x;scroll-snap-type:x proximity;scroll-padding-inline:12px;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch}
.rail::-webkit-scrollbar{display:none}
.zchip{flex:none;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:12px;min-height:44px;padding:4px 14px;cursor:pointer;font-size:12px;scroll-snap-align:start;user-select:none;box-shadow:0 1px 4px rgba(0,0,0,.14)}
.zchip i{width:10px;height:10px;border-radius:50%}
.zchip b{font-family:var(--f-mono);font-weight:500;font-size:13px}
.zchip span{color:var(--muted)}
.zchip[aria-pressed="true"]{border-color:var(--ink);box-shadow:0 0 0 1.5px var(--ink) inset}
.dtag{pointer-events:none;font-family:var(--f-mono);font-size:10.5px;line-height:1;padding:3px 6px;border-radius:999px;background:color-mix(in srgb,var(--surface) 86%,transparent);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.3);white-space:nowrap}
.dtag.main{font-family:var(--f-display);font-size:17px;width:34px;height:34px;padding:0;display:grid;place-items:center;border-radius:50%;background:var(--surface);box-shadow:0 2px 8px rgba(0,0,0,.3)}
.dtag.n{background:var(--north);color:#fff}
@media (max-width:560px){.compass{width:auto;gap:4px;align-items:flex-end}.dial{width:64px;height:64px}.dtag.main{width:30px;height:30px;font-size:15px}}
.sim{position:absolute;left:12px;top:12px;right:128px;max-width:420px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 12px;box-shadow:var(--shadow);font-size:12.5px}
.sim label{display:block;color:var(--muted);margin-bottom:2px}
.sim input{width:100%;accent-color:var(--accent)}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:.82rem;padding:2px 10px;border-radius:6px;border:1px solid var(--line)}
.tag.yes{border-color:color-mix(in srgb,var(--good) 55%,transparent)} .tag.no{border-color:color-mix(in srgb,var(--north) 55%,transparent)}
.zpop{justify-self:start;width:min(440px,100%);max-height:40vh;max-height:44cqh;overflow:auto;overscroll-behavior:contain;touch-action:pan-y;position:relative;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:12px 14px;display:grid;gap:8px}
.zpop .zh{display:flex;gap:10px;align-items:center}
.zpop .zc{flex:none;font-family:var(--f-display);font-size:1.1rem;min-width:2.5em;padding:8px 6px;border-radius:9px;text-align:center;color:#fff;line-height:1}
.zpop .zt{min-width:0;flex:1}
.zpop .zt b{font-family:var(--f-display);font-weight:400;font-size:1.08rem;line-height:1.2;display:block}
.zpop .sub{color:var(--muted);font-size:.82rem}
.zpop p{margin:0;font-size:.9rem}
.zpop .k{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-right:4px}
.zpop h4{margin:0 0 4px;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.zn{flex:none;display:flex;align-items:center;gap:2px;font-family:var(--f-mono);font-size:11px;color:var(--muted)}
.zn button{width:40px;height:40px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:50%;font-size:18px;line-height:1;cursor:pointer}
.zn .x{border-color:transparent;margin-left:4px}
.zpop::before{content:"";justify-self:center;width:36px;height:4px;border-radius:2px;background:var(--line);margin:-4px 0 0}
@media (min-width:700px){.zpop::before{display:none}}
@media (orientation:landscape) and (max-height:520px){.zpop{width:min(360px,100%);max-height:62cqh}.compass .seg{display:none}}
.pin{width:0;height:0;position:relative;pointer-events:none}
.pin i{position:absolute;left:-10px;top:-10px;width:20px;height:20px;border-radius:50%;border:3px solid #fff;box-shadow:0 1px 6px rgba(0,0,0,.5)}
.pin span{position:absolute;left:0;bottom:16px;transform:translateX(-50%);white-space:nowrap;background:var(--ink);color:var(--surface);font-size:11.5px;font-weight:500;padding:3px 9px;border-radius:999px;box-shadow:0 2px 8px rgba(0,0,0,.3)}
.vscore{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:4px 14px 4px 6px;border-radius:999px;background:var(--surface);border:1px solid var(--line);box-shadow:0 1px 4px rgba(0,0,0,.14)}
.vscore b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--accent);color:var(--on-accent);font-family:var(--f-mono);font-size:13px}
.vscore span{font-size:12px;color:var(--muted)}
.segm{display:inline-flex;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:3px;box-shadow:0 1px 4px rgba(0,0,0,.14)}
.segm button{border:0;background:transparent;color:var(--muted);border-radius:999px;min-height:36px;padding:4px 14px;font:inherit;font-size:13px;font-weight:500;cursor:pointer}
.segm button[aria-pressed="true"]{background:var(--ink);color:var(--surface)}
.zchip b.nm{font-family:var(--f-body);font-weight:600;font-size:13px;max-width:24ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rtag{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 92%,transparent);color:var(--ink);border-radius:999px;padding:4px 10px 4px 6px;font:inherit;font-size:12px;font-weight:600;white-space:nowrap;cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,.25);min-height:30px}
.rtag i{width:10px;height:10px;border-radius:50%;flex:none}
.rtag[aria-pressed="true"]{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.vline{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.vpill{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:700;padding:3px 10px;border-radius:999px;background:color-mix(in srgb,var(--v) 16%,var(--surface));color:var(--ink);border:1px solid var(--v)}
.vpill::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--v)}
.zpop .act{justify-self:start}
@media (max-width:560px){.rtag{font-size:10.5px;padding:3px 8px 3px 5px;min-height:24px;max-width:13ch;white-space:normal;line-height:1.15;text-align:left;border-radius:12px;gap:4px}.rtag i{width:8px;height:8px}.acts{gap:5px}.act{padding:6px 12px}.vscore span{display:none}.vscore{padding:4px}}
.zpop.compact>:not(.zh):not(.vline){display:none}
.zpop.compact .zh>:not(.zc):not(.zt){display:none}