:root{--radius:9px;--stage-day:#242d29;--stage-night:#182126;--stage:var(--stage-day)}
*{box-sizing:border-box}body{margin:0;height:100dvh;display:flex;flex-direction:column;overflow:hidden;background:var(--paper);font-size:14px}button,input,select,summary{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,summary,select{cursor:pointer}button{color:var(--ink);border:1px solid transparent;background:transparent;border-radius:6px;padding:8px 10px;white-space:nowrap}button:hover:not(:disabled){background:var(--hover)}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,#viewport:focus-visible{outline:3px solid var(--signal);outline-offset:3px}::selection{background:var(--signal);color:var(--void)}input{caret-color:var(--accent)}a{color:var(--accent);text-underline-offset:3px}svg{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--sora);font-weight:600;text-wrap:balance}*{scrollbar-width:thin;scrollbar-color:#46534b transparent}*::-webkit-scrollbar{width:7px}*::-webkit-scrollbar-thumb{background:#46534b;border-radius:4px}.sr-only{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{height:76px;flex:none;display:flex;align-items:center;gap:30px;padding:0 28px;border-bottom:1px solid var(--line);background:var(--panel)}.identity{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);min-width:300px}.identity svg{width:35px;height:30px}.identity strong{display:block;font-family:var(--sora);font-size:20px;font-weight:600;line-height:1;letter-spacing:-.03em}.identity-sub{display:block;font-family:var(--mono);font-size:11px;color:var(--signal);margin-top:4px;letter-spacing:.04em}.vehicle-name{font-weight:600;font-size:15px}.vehicle-name span{display:block;margin-top:4px;color:var(--muted);font-size:12px;font-weight:400}.header-actions{margin-left:auto;display:flex;align-items:center;gap:13px}.text-button{font-size:12px;color:var(--accent);font-weight:600}.file-menu{position:relative}.file-menu summary{list-style:none;border:1px solid var(--line);border-radius:6px;padding:9px 12px;font-size:12px;font-weight:600}.file-menu summary::-webkit-details-marker{display:none}.file-menu summary span{margin-left:10px}.file-menu div{position:absolute;right:0;top:42px;width:245px;background:var(--panel);box-shadow:0 9px 30px #00000055;padding:7px;z-index:25;border-radius:8px}.file-menu a{display:block;padding:11px;text-decoration:none;font-size:13px}.file-menu a:hover{background:var(--active)}
.workspace{flex:1;min-height:0;display:grid;grid-template-columns:302px minmax(0,1fr)}.catalog{display:flex;flex-direction:column;min-height:0;background:var(--paper);border-right:1px solid var(--line);z-index:3}.catalog-head{display:flex;align-items:center;justify-content:space-between;padding:25px 22px 18px}.catalog-head h1{font-size:20px;letter-spacing:-.025em;font-weight:650}.count{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.search-wrap{position:relative;margin:0 17px}.search-wrap svg{position:absolute;left:12px;top:13px;width:17px;height:17px;color:var(--muted)}.search-wrap input{width:100%;padding:11px 29px 11px 37px;background:var(--panel);border:1px solid var(--line);border-radius:7px;font-size:13px;color:var(--ink)}.search-wrap input::placeholder{color:var(--ash)}.search-wrap kbd{position:absolute;right:10px;top:12px;color:var(--muted);font-size:12px;border:1px solid var(--line);border-radius:3px;padding:0 4px}.search-wrap:focus-within kbd{display:none}.catalog-filters{display:flex;align-items:center;justify-content:space-between;padding:12px 18px 9px;gap:4px}.catalog-filters select{max-width:147px;padding:6px 22px 6px 0;border:0;background:transparent;color:var(--muted);font-size:12px}.catalog-filters button{font-size:11px;padding:6px 4px}.part-list{flex:1;min-height:100px;overflow:auto;padding:0 9px 15px}.system-heading{padding:13px 12px 6px;font-size:11px;font-weight:600;color:var(--ash)}.part-row{display:flex;align-items:center;border-radius:6px;margin:2px 0;min-height:41px}.part-row button{width:100%;display:flex;align-items:center;gap:10px;text-align:left;padding:10px 12px;font-size:12px;white-space:normal;line-height:1.4}.part-row button:hover{background:var(--slate)}.part-row.selected button{background:var(--active);color:var(--signal);font-weight:650}.part-symbol{display:block;flex:none;width:7px;height:7px;border-radius:50%;background:var(--ash)}.part-row.selected .part-symbol{background:var(--accent)}.part-row[data-system="Powertrain"] .part-symbol{background:var(--ash)}.part-row[data-system="Wheels"] .part-symbol{background:var(--ash)}.part-row[data-system="Chassis"] .part-symbol{background:var(--ash)}.part-row[data-system="Cabin"] .part-symbol{background:var(--ash)}.part-name{flex:1}.hidden-label{font-size:11px;color:var(--muted);font-weight:400}.part-row.is-hidden .part-name{color:var(--ash);text-decoration:line-through}.list-message{padding:18px 14px;color:var(--muted);line-height:1.6;font-size:13px}.selection{flex:none;border-top:1px solid var(--line);padding:19px 21px 20px;max-height:43%;overflow:auto;background:var(--slate)}.selection-empty svg{width:30px;height:30px;color:var(--ash);margin-bottom:9px}.selection-empty h2{font-size:15px;font-weight:650;margin-bottom:6px}.selection-empty p{color:var(--muted);font-size:12px;line-height:1.6}.selection-heading{display:flex;align-items:start;gap:5px;margin-bottom:8px}.selection-heading h2{font-size:18px;line-height:1.25;letter-spacing:-.025em;flex:1}.selection-heading button{padding:0 3px;font-size:12px;color:var(--muted)}.selection p{font-size:12px;line-height:1.6;color:var(--muted)}.selection-id{display:block;font-size:11px;color:var(--muted);letter-spacing:.025em;margin-bottom:9px}.selection-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:14px}.selection-actions button{border:1px solid var(--line);background:var(--panel);font-size:12px;padding:8px 5px}.selection-actions button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--void)}.references{margin-top:13px}.references summary{font-size:11px;color:var(--accent);padding:3px 0}.references a{display:block;font-size:11px;padding-top:7px}.references small{display:block;font-size:11px;color:var(--muted);line-height:1.5;margin-top:8px}
.stage{position:relative;min-width:0;overflow:hidden;background:var(--stage)}#viewport{position:absolute;inset:0 0 126px;outline-offset:-4px;touch-action:none}canvas{display:block;width:100%;height:100%}.stage-top{position:absolute;z-index:5;top:20px;left:25px;right:25px;display:flex;justify-content:space-between;pointer-events:none}.stage-top button,.view-controls{pointer-events:auto}.view-controls{display:flex;padding:3px;gap:3px;border:1px solid var(--line);border-radius:7px;background:var(--panel)}.view-controls button{font-size:11px;min-width:42px;padding:6px 9px}.view-controls button[aria-pressed="true"]{background:var(--signal);color:var(--void)}.stage-button{font-size:12px;padding:8px 11px;background:var(--panel);border:1px solid var(--line)}.stage-tools{position:absolute;z-index:7;bottom:25px;left:50%;transform:translateX(-50%);width:min(650px,calc(100% - 50px));background:var(--panel);box-shadow:0 6px 24px #00000040;border-radius:12px;padding:14px 18px 9px}.explode-row{display:flex;align-items:center;gap:20px}.primary-button{display:flex;align-items:center;gap:8px;min-width:163px;justify-content:center;padding:10px 13px;background:var(--accent);color:var(--void);font-size:12px;font-weight:600}.primary-button:hover:not(:disabled){background:var(--accent-hover)}.primary-button svg{width:18px;height:18px}.explode-row input{min-width:40px;flex:1;accent-color:var(--accent);cursor:pointer;height:26px}.explode-row output{font-size:12px;min-width:35px;text-align:right;font-variant-numeric:tabular-nums}.utility-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:11px;border-top:1px solid var(--line);padding-top:8px}.utility-row>div{display:flex;gap:2px}.utility-row button{font-size:11px;padding:6px 8px}.utility-row button[aria-pressed="true"]{color:var(--accent);background:var(--active);font-weight:600}.interaction-help{font-size:11px;color:var(--muted)}.stage-caption{position:absolute;bottom:151px;left:28px;right:28px;display:flex;gap:12px;font-size:11px;pointer-events:none;color:var(--muted)}#stage-mode{font-weight:600;color:var(--white)}.load-state{position:absolute;z-index:4;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:var(--stage);padding:30px;text-align:center}.load-state[hidden]{display:none}.load-state strong{font-size:17px;font-weight:600}.load-state span{font-size:12px;color:var(--muted);max-width:50ch;line-height:1.6}.load-line{width:135px;height:3px;background:var(--charcoal);overflow:hidden;margin-bottom:15px}.load-line:after{content:"";display:block;width:45%;height:100%;background:var(--accent);animation:loading 1.4s ease-in-out infinite alternate}.error-state button{border:1px solid var(--accent);font-size:12px}.labels{position:absolute;inset:0 0 126px;pointer-events:none;overflow:hidden}.model-label{position:absolute;left:0;top:0;transform:translate(-50%,-50%);font-size:11px;color:var(--white);background:#0b0e0df2;padding:4px 7px;border-radius:4px;box-shadow:0 2px 8px #00000040;white-space:nowrap;border:1px solid var(--line)}.model-label.selected{background:var(--accent);color:var(--void);border-color:var(--accent)}
.statusbar{height:38px;flex:none;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 25px;font-size:11px;color:var(--muted);gap:20px;background:var(--panel)}.statusbar>span{display:flex;align-items:center;gap:7px}.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--amber)}.status-separator{margin:0 5px;color:var(--ash)}.statusbar label{display:flex;align-items:center;gap:9px;white-space:nowrap}.statusbar select{font-size:11px;background:var(--slate);border:1px solid var(--line);border-radius:4px;color:var(--ink);max-width:226px;padding:4px 5px}dialog{width:min(630px,calc(100% - 30px));max-height:85dvh;padding:28px;border:0;border-radius:12px;background:var(--panel);color:var(--ink);box-shadow:0 22px 80px #00000088}dialog::backdrop{background:#000000a6}.dialog-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:22px}.dialog-heading h2{font-size:23px;letter-spacing:-.025em}.dialog-heading button{border:1px solid var(--line);font-size:12px}dialog p{font-size:13px;line-height:1.7;color:var(--muted)}dialog h3{margin:23px 0 8px;font-size:14px}.source-links{list-style:none;margin:20px 0;padding:0;border-top:1px solid var(--line)}.source-links li{border-bottom:1px solid var(--line)}.source-links a{display:block;padding:12px 0;font-size:12px;text-decoration:none}.source-links span{display:block;font-size:11px;color:var(--muted);margin-top:3px}.dialog-footnote{font-size:11px!important}button[hidden],.selection[hidden]{display:none}
.mobile-context{display:none}
[hidden]{display:none!important}
.manual-link{display:inline-flex;align-items:center;min-height:40px;padding:8px 10px;font-size:12px;font-weight:500;color:var(--signal);text-decoration:none;white-space:nowrap}
.manual-link:hover{text-decoration:underline}
.scopebar{min-height:52px;flex:none;display:flex;align-items:center;gap:22px;padding:7px 28px;border-bottom:1px solid var(--line);background:var(--panel)}.scopebar>span{font-size:12px;color:var(--muted)}.open-engine{display:flex;align-items:center;justify-content:space-between;width:100%;margin-top:14px;background:var(--accent);color:var(--void);font-size:12px;font-weight:600;padding:11px 12px}.open-engine:hover:not(:disabled){background:var(--accent-hover)}.open-engine svg{width:16px;height:16px}.part-depth{font-size:11px;color:var(--muted);font-weight:400}.part-row[data-system="Rotating assembly"] .part-symbol{background:var(--ash)}.part-row[data-system="Valvetrain"] .part-symbol{background:var(--ash)}.part-row[data-system="Intake & exhaust"] .part-symbol{background:var(--ash)}
@keyframes loading{from{transform:translateX(-40%)}to{transform:translateX(180%)}}
@media(min-width:1600px){.workspace{grid-template-columns:330px minmax(0,1fr)}.catalog-head{padding-top:30px}.part-row button{font-size:13px;padding:12px}.selection{padding:24px}.stage-tools{bottom:32px}}
@media(max-width:1000px){.topbar{padding:0 19px;gap:20px}.identity{min-width:218px}.header-actions{gap:3px}.workspace{grid-template-columns:274px minmax(0,1fr)}.stage-top{left:18px;right:18px}.stage-tools{width:calc(100% - 32px);padding:12px 12px 7px}.explode-row{gap:10px}.primary-button{min-width:146px;padding:9px;font-size:11px}.interaction-help{display:none}.vehicle-name{font-size:13px}.selection{padding:17px}.statusbar{padding:0 18px}}
@media(max-width:760px){body{height:auto;min-height:100dvh;overflow:auto}.topbar{height:auto;min-height:112px;flex-wrap:wrap;padding:10px 16px;gap:8px 10px}.identity{min-width:0;flex:1 1 100%;gap:8px}.identity strong{font-size:19px}.identity svg{width:29px}.identity-sub{font-size:11px}.vehicle-name{display:none}.header-actions{width:100%;margin-left:0;justify-content:flex-end;gap:3px}.header-actions button{font-size:11px;padding:7px}.file-menu summary{font-size:11px;padding:8px}.file-menu summary span{margin-left:3px}.workspace{display:flex;flex-direction:column}.stage{order:-1;min-height:490px;height:58dvh;max-height:680px;flex:none;border-bottom:1px solid var(--line)}.catalog{border-right:0;min-height:520px;max-height:none}.catalog-head{padding:20px 20px 13px}.search-wrap{margin:0 18px}.catalog-filters{padding-top:8px}.part-list{max-height:340px;min-height:150px;flex:initial;padding-bottom:12px}.part-row button{min-height:42px;font-size:13px}.selection{max-height:none;padding:22px}.selection-empty{display:none}.selection:has(.selection-empty){display:none}.stage-top{top:15px;left:15px;right:15px}.stage-tools{bottom:16px;width:calc(100% - 30px);padding:12px 12px 7px}.stage-caption{bottom:137px;left:17px;right:17px;gap:8px;font-size:11px}#viewport,.labels{bottom:112px}.statusbar{position:static;height:auto;min-height:66px;padding:11px 17px;gap:10px;align-items:flex-start;flex-direction:column}.statusbar label{align-self:flex-end}.status-separator{margin:0 1px}.selection-actions{max-width:380px}.load-state{padding-bottom:100px}.file-menu div{width:232px}.selection-heading h2{font-size:20px}dialog{padding:21px}.dialog-heading h2{font-size:21px}}
@media(max-width:760px){.mobile-context{display:flex;position:absolute;top:65px;left:17px;right:17px;z-index:4;flex-direction:column;gap:3px;font-size:11px;line-height:1.35;color:var(--muted);pointer-events:none}.mobile-context strong{color:var(--ink);font-weight:600}.stage{min-height:540px}#viewport,.labels{top:100px}}
@media(prefers-reduced-motion:reduce){.load-line:after{animation:none;transform:translateX(70%)}}
@media(max-width:1000px){.scopebar{padding-left:18px;padding-right:18px;gap:12px}.scopebar>span{font-size:11px}}
@media(max-width:760px){.scopebar{padding:7px 12px;min-height:49px}.scopebar>span{display:none}.statusbar #engine-context{align-self:flex-end}.open-engine{max-width:380px}.header-actions #about{max-width:105px;white-space:normal;text-align:right}.catalog-head h1{font-size:20px}}
.scopebar>span{font-size:11px}.component-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:7px 28px;border-bottom:1px solid var(--line);background:var(--slate);font-size:11px;color:var(--muted);flex:none}.component-breadcrumb button{padding:4px 0;color:var(--accent);font-weight:600;font-size:11px}.component-breadcrumb strong{color:var(--ink);font-weight:600}.component-notice{margin-left:auto}.detail-indicator{font-size:11px;color:var(--accent);font-weight:600}.detail-availability{margin-top:9px;font-size:11px!important;color:var(--accent)!important}.open-engine{white-space:normal;text-align:left;line-height:1.5}
.private-reference{font-size:12px;color:var(--muted);line-height:1.6;padding:12px 0}
.search-context{display:flex;align-items:center;gap:8px;padding:9px 22px 0;font-size:11px;color:var(--muted)}
.search-context select{font:inherit;color:var(--ink);border:0;border-bottom:1px solid var(--line);background:transparent;padding:5px 2px;max-width:140px}
.search-context button{margin-left:auto;padding:5px;font-size:11px;color:var(--accent)}
.catalog-status{padding:5px 22px 11px;font-size:11px;color:var(--muted);line-height:1.5}
.catalog-status button{color:var(--accent);font-size:11px;padding:5px 0;display:block}
.global-result button{flex-direction:column;align-items:flex-start;gap:4px}
.global-result .part-name{font-weight:550}
.global-result small{font-size:11px;font-weight:400;color:var(--muted)}
.part-reference{margin:16px 0 12px}
.part-reference a{display:block}
.part-reference img{display:block;width:100%;height:142px;object-fit:contain;background:#fff;border-radius:5px}
.part-reference figcaption{font-size:11px;line-height:1.45;color:var(--muted);margin-top:5px}
.part-facts{margin:16px 0 0;display:grid;grid-template-columns:64px minmax(0,1fr);gap:10px 9px;font-size:11px;line-height:1.55}
.part-facts dt{font-weight:600;color:var(--ink)}
.part-facts dd{margin:0;color:var(--muted);overflow-wrap:anywhere}
.part-source-status{margin-top:12px;font-size:11px!important}
#scope-trail{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
#scope-trail button{padding:4px 6px}
#scope-trail button[aria-current]{color:var(--ink);background:var(--active);cursor:default}


@media(max-width:760px){.part-reference img{height:170px}.part-facts{font-size:12px;grid-template-columns:72px minmax(0,1fr)}.search-context{padding-left:20px;padding-right:20px}.component-breadcrumb{gap:4px}.component-breadcrumb strong{display:none}.selection{max-height:none}}
@media(max-width:1000px){.scopebar{gap:4px}.scopebar>span{flex-basis:100%;padding:2px 9px}.component-breadcrumb{padding-left:18px;padding-right:18px}.component-notice{display:none}}
@media(max-width:760px){.component-breadcrumb{padding:7px 16px;gap:8px}.component-breadcrumb strong{display:none}.catalog-head h1{font-size:19px}}

/* The Nebulys workspace stays dark; day/night changes the model environment. */
.stage-actions{display:flex;align-items:center;justify-content:flex-end;gap:6px;pointer-events:auto}.night-toggle{font-weight:650}.night-toggle[aria-pressed="true"]{background:var(--active);border-color:var(--circuit);color:var(--signal)}
@media(max-width:760px){.stage-actions{gap:4px}.stage-actions .stage-button{padding:7px 8px;font-size:11px}.stage-actions #chassis-view{display:none}}
.topbar{background:var(--void)}
.identity{min-width:243px}
.vehicle-name{font-family:var(--sora);font-weight:600}
.vehicle-name span{font-family:var(--inter)}
.file-menu div{border:1px solid var(--line);box-shadow:none}
.file-menu summary:hover{background:var(--slate)}
.count,.explode-row output,.stage-caption,.statusbar,.selection-id,.search-wrap kbd{font-family:var(--mono)}
.part-row.selected .part-symbol{background:var(--signal)}
.part-row.selected button{box-shadow:inset 0 0 0 1px var(--circuit)}
.part-row.selected button:hover{background:var(--active)}
.primary-button,.open-engine{font-weight:600}

.stage-tools{border:1px solid var(--line);box-shadow:none}
.stage-button:hover:not(:disabled),.selection-actions button:hover:not(:disabled){background:var(--hover);border-color:var(--circuit)}
.selection-actions button[aria-pressed="true"]{color:var(--void)}
select option{background:var(--panel);color:var(--white)}
.search-wrap input{color-scheme:dark}
.search-wrap input::placeholder{color:var(--muted)}
.model-label{box-shadow:none}
.statusbar{background:var(--void);font-size:11px}
.error-state strong{color:var(--amber)}
dialog{border:1px solid var(--line);box-shadow:none}
.source-links{padding-top:8px}
.source-links a{padding-left:8px;padding-right:8px}
.statusbar>span{flex-wrap:wrap;row-gap:4px}
html[data-night-view="true"] .stage{--stage:var(--stage-night)}
@media(max-width:760px){.identity{min-width:0}.identity strong{font-size:20px}.identity .identity-sub{font-size:11px}.identity img{width:28px;height:28px}.statusbar{line-height:1.6}.stage-top{gap:8px}.stage-caption{font-size:11px}}


@media(max-width:760px){.topbar{height:auto;min-height:72px;flex-wrap:wrap;padding:12px 16px;row-gap:8px}.header-actions{margin-left:0;flex:1 0 100%;justify-content:space-between}.header-actions #about{max-width:none;text-align:left}.manual-link{font-size:12px;padding-left:0}}

/* Each current-view assembly gets one stable grid slot. */
.layout-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:11px;color:var(--muted)}
.layout-row>div{display:flex;gap:3px;background:var(--slate);padding:2px;border-radius:5px}
.layout-row button{padding:5px 10px;font-size:11px;min-height:28px}
.layout-row button[aria-pressed="true"]{background:var(--active);color:var(--signal)}
#grid-hint{margin-left:auto;font-size:10px}
#viewport,.labels{bottom:167px}.stage-caption{bottom:193px}
@media(max-width:760px){#viewport,.labels{bottom:154px}.stage-caption{bottom:179px}.stage{min-height:580px}.layout-row{gap:8px}#grid-hint{max-width:130px;text-align:right}.explode-row{gap:8px}.primary-button{min-width:143px}}

/* One view picker replaces the horizontal system tabs. */
.scopebar{position:relative;z-index:12;flex-wrap:nowrap}
.scopebar>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.view-picker{position:relative;flex:none;max-width:100%}
.view-picker>summary{display:flex;align-items:center;gap:10px;list-style:none;min-height:38px;padding:8px 12px;border:1px solid var(--line);border-radius:7px;background:var(--slate);font-size:12px}
.view-picker>summary::-webkit-details-marker{display:none}
.view-picker>summary:hover,.view-picker[open]>summary{border-color:var(--signal)}
.view-picker-label{color:var(--muted);font-weight:400}
.view-picker>summary strong{color:var(--signal);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.view-picker>summary svg{margin-left:auto;flex:none;color:var(--muted)}
.view-picker[open]>summary svg{transform:rotate(180deg)}
.view-picker-panel{position:absolute;top:calc(100% + 8px);left:0;width:340px;max-width:calc(100vw - 56px);padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);box-shadow:0 14px 38px #0008}
#view-search{width:100%;min-height:40px;padding:9px 11px;border:1px solid var(--line);border-radius:6px;background:var(--paper);color:var(--ink);font-size:13px}
#view-search::placeholder{color:var(--muted)}
.view-picker-meta{display:flex;align-items:center;justify-content:space-between;min-height:34px;padding:2px 2px;font-size:11px;color:var(--muted)}
#view-search-clear{font-size:11px;padding:6px;color:var(--signal)}
.view-options{display:flex;flex-direction:column;gap:3px;max-height:min(380px,calc(100dvh - 290px));overflow-y:auto;overscroll-behavior:contain;padding:3px}
.view-options button{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:3px;width:100%;min-height:44px;padding:8px 30px 8px 10px;text-align:left;white-space:normal;font-size:12px}
.view-options button small{font-size:10px;line-height:1.4;color:var(--muted)}
.view-options button[aria-current="page"]{color:var(--signal);background:var(--active)}
.view-options button[aria-current="page"]::after{content:'✓';position:absolute;right:10px;top:12px;font-weight:600}
#view-empty{padding:14px 5px 10px;font-size:12px;line-height:1.6;color:var(--muted)}
@media(max-width:760px){.view-picker{width:100%}.view-picker>summary{min-height:40px}.view-picker-panel{width:100%;max-width:calc(100vw - 24px)}#view-search{font-size:16px}.view-options{max-height:min(340px,calc(100dvh - 310px))}}

/* Motion controls belong to the engine view; the system picker stays compact. */
.engine-motion{border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:10px}
.motion-actions{display:flex;gap:5px;align-items:center;flex-wrap:wrap}
.motion-actions button,.motion-actions select{min-height:30px;padding:5px 9px;font-size:11px}
.motion-actions .motion-play{background:var(--signal);color:var(--void);font-weight:650;min-width:60px}
.motion-actions button[aria-pressed="true"]{background:var(--active);color:var(--signal)}
.motion-actions #engine-motion-reset{margin-left:auto}
.motion-actions select{border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink)}
.motion-scrub{display:flex;align-items:center;gap:9px;margin-top:7px;font-size:11px;color:var(--muted)}
.motion-scrub input{flex:1;min-width:0;accent-color:var(--signal)}
.motion-scrub output{min-width:37px;text-align:right;font-family:var(--mono);color:var(--ink)}
#engine-motion-hint{font-size:10px;line-height:1.4;margin:5px 0 0;color:var(--muted)}
html[data-viewer-scope="engine"] #viewport,html[data-viewer-scope="engine"] .labels{bottom:278px}
html[data-viewer-scope="engine"] .stage-caption{bottom:302px}
@media(max-width:760px){html[data-viewer-scope="engine"] .stage{min-height:720px}html[data-viewer-scope="engine"] #viewport,html[data-viewer-scope="engine"] .labels{bottom:281px}html[data-viewer-scope="engine"] .stage-caption{bottom:304px}.motion-actions button,.motion-actions select{min-height:34px;font-size:10px;padding:6px 7px}.motion-actions{gap:4px}#engine-motion-hint{max-width:310px}}

.motion-actions .motion-play:hover:not(:disabled){background:var(--accent-hover);color:var(--void)}

/* Reading controls remain outside the collapsible catalog. */
.workspace.sidebar-hidden{grid-template-columns:minmax(0,1fr)}
#assembly-sidebar[hidden]{display:none}
#toggle-sidebar,#expand-part{flex-shrink:0;min-height:36px;white-space:nowrap}
#part-dialog{width:min(760px,calc(100vw - 32px));max-width:calc(100vw - 32px);max-height:calc(100dvh - 40px);padding:0;background:var(--slate);color:var(--ink)}
.part-dialog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 24px;border-bottom:1px solid var(--line)}
.part-dialog-toolbar button{border:1px solid var(--line);border-radius:6px;padding:8px 16px}
#part-dialog .selection{max-height:none;overflow:visible;border:0;padding:24px;font-size:15px}
#part-dialog .part-facts{font-size:15px;line-height:1.7;grid-template-columns:110px minmax(0,1fr)}
#part-dialog .selection p,#part-dialog .references small,#part-dialog .references a{font-size:14px;line-height:1.75}
#part-dialog .selection-heading h2{font-size:25px}
#part-dialog::backdrop{background:rgb(0 0 0 / .65)}
@media(max-width:760px){.scopebar{flex-wrap:wrap}.scopebar #toggle-sidebar,.scopebar #expand-part{flex:1}#part-dialog .selection{padding:18px}#part-dialog .part-facts{grid-template-columns:85px minmax(0,1fr)}}

.inline-expand{white-space:nowrap;color:var(--accent)}.number-reference-list{padding-left:18px;line-height:1.65}.number-reference-list li{margin:6px 0}.number-reference-list .number-heading{list-style:none;font-weight:600;margin-top:12px}.part-number-values{overflow-wrap:anywhere}.number-references h3{margin:16px 0 6px;font-size:14px}.number-reference-list strong{font-family:monospace;overflow-wrap:anywhere}

/* Keep all quick views reachable when the viewport narrows. */
.stage-top{flex-wrap:wrap;gap:8px}
@media(max-width:760px){.stage-actions{flex-basis:100%;justify-content:flex-start}.mobile-context{top:104px}}