:root{--builder-navy: #0f1b3d;--builder-navy-alt: #16213e;--builder-navy-deep: #0a1028;--builder-overlay: rgba(10, 22, 48, .86);--builder-overlay-soft: rgba(14, 28, 52, .78);--builder-border: rgba(136, 204, 255, .28);--builder-border-strong: rgba(136, 204, 255, .45);--builder-border-cyan: rgba(136, 204, 255, .28);--builder-blue: #88ccff;--builder-orange: #ff8844;--builder-green: #00ff88;--wire-w: var(--builder-blue);--wire-i: var(--builder-orange);--wire-r: var(--builder-green);--wire-e: #ff4444;--builder-cyan: #88ccff;--builder-text: #e8f6ff;--builder-muted: rgba(200, 220, 255, .72);--builder-shadow: rgba(3, 12, 32, .55);--builder-menu-toggle-width: 24px;--builder-menu-toggle-height: 64px;--builder-menu-toggle-hit-width: max(var(--builder-menu-toggle-width), 36px);--builder-menu-left-width: 180px;--builder-menu-right-width: 172px;--builder-menu-bottom-width: min(500px, calc(100vw - 128px) );--builder-menu-bottom-height: 248px;--builder-safe-area-top: env(safe-area-inset-top, 0px);--builder-safe-area-bottom: env(safe-area-inset-bottom, 0px)}body.builder-body{margin:0;background:linear-gradient(135deg,var(--builder-navy),var(--builder-navy-alt) 48%,var(--builder-navy-deep));color:var(--builder-text);font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;overflow:hidden}.builder-shell{position:relative;min-height:100vh;width:100vw;color:inherit}.builder-logo-header{position:fixed;top:0;left:0;right:0;height:calc(64px + var(--builder-safe-area-top));padding-top:var(--builder-safe-area-top);background:linear-gradient(180deg,rgba(15,27,61,.92),rgba(15,27,61,.25),transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);z-index:900;display:flex;align-items:center;justify-content:center;pointer-events:none}.builder-logo-mark{display:inline-flex;align-items:center;justify-content:center;animation:builderLogoPulse 3.2s ease-in-out infinite}.builder-logo-mark .circuitry-brandmark__img{width:clamp(52px,10vw,72px);height:auto;filter:drop-shadow(0 0 10px rgba(136,204,255,.28)) drop-shadow(0 0 26px rgba(136,204,255,.45))}.builder-logo-text{font-size:28px;font-weight:900;letter-spacing:.12em;display:inline-flex;align-items:baseline;gap:.2rem;text-shadow:0 0 10px rgba(136,204,255,.28),0 0 26px rgba(136,204,255,.45);animation:builderLogoPulse 3.2s ease-in-out infinite}.builder-logo-circui{color:var(--builder-cyan)}.builder-logo-try{color:var(--builder-orange)}.builder-logo-3d{color:var(--builder-green);letter-spacing:.18em}@keyframes builderLogoPulse{0%,to{filter:drop-shadow(0 0 6px rgba(136,204,255,.45)) drop-shadow(0 0 16px rgba(136,204,255,.35))}50%{filter:drop-shadow(0 0 12px rgba(136,204,255,.65)) drop-shadow(0 0 24px rgba(255,255,255,.35))}}.workspace-mode-bar{position:fixed;top:calc(12px + var(--builder-safe-area-top));left:50%;transform:translate(-50%);z-index:2100;display:flex;align-items:center;flex-wrap:nowrap;gap:6px;background:#0a1830e0;border:1px solid var(--builder-border);border-radius:16px;padding:6px;max-width:min(1200px,calc(100vw - 24px));overflow-x:auto;overscroll-behavior:contain;touch-action:pan-x;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:rgba(136,204,255,.35) transparent;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 8px 24px #030c20a6}.workspace-mode-bar::-webkit-scrollbar{height:6px}.workspace-mode-bar::-webkit-scrollbar-thumb{background:#88ccff59;border-radius:999px}.mode-tab{display:flex;align-items:center;gap:6px;flex:0 0 auto;padding:10px 16px;background:transparent;border:1px solid transparent;border-radius:12px;color:var(--builder-muted);font-size:13px;font-weight:600;cursor:pointer;transition:all .22s ease;white-space:nowrap}.mode-tab:hover{background:#88ccff14;color:var(--builder-cyan);border-color:#88ccff38}.mode-tab[data-active=true]{background:#88ccff2e;color:var(--builder-cyan);border-color:var(--builder-border-strong);box-shadow:0 0 12px #88ccff52}.mode-icon{font-size:18px;line-height:1}.mode-label{font-family:inherit}.mode-tab--icon-only{padding:10px 12px}.mode-tab--icon-only .mode-icon{margin:0}.mode-bar-scroll-indicator{display:flex;align-items:center;justify-content:center;flex:0 0 auto;padding:0 4px;color:var(--builder-cyan);animation:scroll-hint 1.5s ease-in-out infinite;pointer-events:none}.mode-bar-scroll-indicator--left{position:fixed;top:calc(12px + var(--builder-safe-area-top));left:calc(50% - min(600px,calc(50vw - 12px)) - 28px);z-index:2101;background:#0a1830f2;border:1px solid var(--builder-border);border-radius:50%;width:28px;height:28px;padding:0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 4px 12px #030c2080}.mode-bar-scroll-indicator--left .scroll-indicator-arrow{animation:scroll-hint-left 1.5s ease-in-out infinite}.mode-bar-scroll-indicator--inline{margin-left:2px}.scroll-indicator-arrow{font-size:18px;font-weight:700;text-shadow:0 0 8px rgba(136,204,255,.6);line-height:1}@keyframes scroll-hint{0%,to{opacity:.6;transform:translate(0)}50%{opacity:1;transform:translate(3px)}}@keyframes scroll-hint-left{0%,to{opacity:.6;transform:translate(0)}50%{opacity:1;transform:translate(-3px)}}@media(max-width:640px){.mode-bar-scroll-indicator--left{top:calc(8px + var(--builder-safe-area-top));left:calc(50% - min(50vw - 8px,50vw - 8px) - 28px);left:4px;width:24px;height:24px}.scroll-indicator-arrow{font-size:16px}}.mode-bar-spacer{flex:1;min-width:12px}.workspace-edge-actions{position:fixed;top:calc(72px + var(--builder-safe-area-top));right:clamp(12px,3vw,24px);z-index:940;display:flex;flex-direction:column;gap:6px;padding:6px;background:#0a1830bf;border:1px solid rgba(136,204,255,.2);border-radius:12px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 4px 16px #030c2073;opacity:.7;transition:opacity .2s ease,background .2s ease}.workspace-edge-actions:hover{opacity:1;background:#0a1830e0}.edge-action-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:1px solid transparent;border-radius:8px;color:var(--builder-muted);cursor:pointer;transition:all .2s ease;position:relative}.edge-action-btn:hover:not(:disabled){background:#6366f126;color:#a5b4fc;border-color:#6366f14d}.edge-action-btn:disabled,.edge-action-btn[aria-disabled=true]{cursor:not-allowed;opacity:.4}.edge-action-icon{font-size:16px;line-height:1}.edge-action-btn .unsaved-dot{position:absolute;top:4px;right:4px;width:6px;height:6px;background:#fbbf24;border-radius:50%;animation:pulse-dot 1.5s infinite}.edge-action-btn--active{background:#88ccff40;border-color:var(--builder-cyan);color:var(--builder-cyan);box-shadow:0 0 12px #88ccff59}.edge-action-btn--active:hover:not(:disabled){background:#88ccff59;border-color:var(--builder-cyan);color:#fff}.workspace-edge-actions--right{right:calc(env(safe-area-inset-right,0px) + clamp(12px,3vw,24px) + var(--builder-menu-toggle-hit-width) + 8px);left:auto}.workspace-edge-actions--left{left:calc(env(safe-area-inset-left,0px) + clamp(12px,3vw,24px) + var(--builder-menu-toggle-hit-width) + 8px);right:auto}.builder-shell[data-left-menu-open=true] .workspace-edge-actions--left{left:calc(env(safe-area-inset-left,0px) + var(--builder-menu-left-width) + var(--builder-menu-toggle-hit-width) + 12px)}.builder-shell[data-right-menu-open=true] .workspace-edge-actions--right{right:calc(env(safe-area-inset-right,0px) + var(--builder-menu-right-width) + var(--builder-menu-toggle-hit-width) + 12px)}@media(max-width:720px){.workspace-edge-actions{top:calc(64px + var(--builder-safe-area-top));padding:4px;gap:4px}.workspace-edge-actions--right{right:calc(env(safe-area-inset-right,0px) + 8px + var(--builder-menu-toggle-hit-width) + 6px)}.workspace-edge-actions--left{left:calc(env(safe-area-inset-left,0px) + 8px + var(--builder-menu-toggle-hit-width) + 6px)}.builder-shell[data-left-menu-open=true] .workspace-edge-actions--left{left:calc(env(safe-area-inset-left,0px) + var(--builder-menu-left-width) + var(--builder-menu-toggle-hit-width) + 10px)}.builder-shell[data-right-menu-open=true] .workspace-edge-actions--right{right:calc(env(safe-area-inset-right,0px) + var(--builder-menu-right-width) + var(--builder-menu-toggle-hit-width) + 10px)}.edge-action-btn{width:32px;height:32px}.edge-action-icon{font-size:14px}}@media(max-width:480px){.workspace-edge-actions{top:auto;bottom:clamp(80px,18vh,140px);flex-direction:column}.workspace-edge-actions--right{right:calc(env(safe-area-inset-right,0px) + 8px + var(--builder-menu-toggle-hit-width) + 6px);left:auto;transform:none}.workspace-edge-actions--left{left:calc(env(safe-area-inset-left,0px) + 8px + var(--builder-menu-toggle-hit-width) + 6px);right:auto;transform:none}.builder-shell[data-bottom-menu-open=true] .workspace-edge-actions{display:none}}.mode-bar-actions{display:flex;gap:4px;align-items:center;margin-left:8px;padding-left:12px;border-left:1px solid var(--builder-border);flex:0 0 auto}.mode-action-btn{display:flex;align-items:center;gap:5px;flex:0 0 auto;padding:8px 12px;background:transparent;border:1px solid transparent;border-radius:10px;color:var(--builder-muted);font-size:12px;font-weight:500;cursor:pointer;transition:all .2s 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var(--builder-safe-area-bottom));flex-direction:column;width:var(--builder-menu-toggle-width);height:var(--builder-menu-toggle-width)}.builder-menu-stage-bottom.open{width:calc(var(--builder-menu-bottom-width) + var(--builder-menu-toggle-width));height:calc(var(--builder-menu-bottom-height) + var(--builder-menu-toggle-width))}.builder-menu-stage-left .builder-menu,.builder-menu-stage-right .builder-menu{pointer-events:none;opacity:1;transition:opacity .25s ease}.builder-menu-stage-bottom .builder-menu{pointer-events:none}.builder-menu-stage-left.open .builder-menu,.builder-menu-stage-right.open .builder-menu{pointer-events:auto}.builder-menu-stage-bottom .builder-menu{transform:translateY(100%);opacity:0}.builder-menu-stage-bottom.open 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#030c20a6;display:flex;flex-direction:column;overflow:hidden}.builder-panel-brand{position:absolute;top:16px;left:16px;z-index:10;pointer-events:none;opacity:.95}.builder-panel-overlay--arena .builder-panel-brand .circuitry-brandmark__img{width:clamp(40px,6.5vw,56px);height:auto}.builder-panel-brand .circuitry-brandmark__img{filter:drop-shadow(0 8px 18px rgba(45,212,191,.18))}.builder-panel-shell--practice{width:min(94vw,1180px)}.builder-panel-shell--arena{width:min(96vw,1320px);max-height:92vh}.builder-panel-shell--schematic{width:min(96vw,1380px);max-height:92vh}.builder-panel-shell--environment{width:min(94vw,720px);max-height:90vh}.builder-panel-body--environment{overflow:auto;padding:0;background:transparent;flex:1 1 auto;min-height:0}.builder-panel-shell--wire-library{width:min(96vw,1280px);max-height:92vh}.builder-panel-body--wire-library{overflow:auto;padding:24px 28px;background:linear-gradient(160deg,#061022f5,#020812f0);flex:1 1 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#8cf3}.toggle-icon{width:12px;height:12px;pointer-events:none;display:grid;place-items:center;font-size:10px;color:var(--builder-cyan)}.toggle-icon svg{width:12px;height:12px;display:block;filter:drop-shadow(0 0 4px rgba(136,204,255,.4))}.toggle-text{display:block;font-size:8px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--builder-cyan);white-space:nowrap;text-shadow:0 0 8px rgba(136,204,255,.3)}.builder-menu-bottom::-webkit-scrollbar{width:8px}.builder-menu-bottom::-webkit-scrollbar-thumb{background:#0f86;border-radius:999px}.builder-menu-bottom .menu-track{display:flex;flex-direction:column;gap:10px;overflow:hidden;padding-bottom:0;scroll-snap-type:none}.builder-menu-bottom .menu-track-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.builder-menu-bottom .menu-track-chips{display:flex;flex-direction:column;gap:8px;overflow:auto;max-height:160px;padding-right:2px}.builder-menu-bottom 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